Water jet propulsion impeller structure with detachable blades

Abstract

The utility model discloses a blade detachable type water jet propulsion impeller structure which comprises a hub, blade fixing bodies are evenly assembled on the outer wall of the hub along the axis of the hub at equal intervals, blade fixing cavities are formed in the blade fixing bodies, blades are inserted into the blade fixing cavities, and fixing cylinders are assembled on the front sides and the rear sides of the lower ends of the blades. Fixing holes are formed in the inner walls of the front side and the rear side of the blade fixing cavity in a penetrating mode, the fixing cylinders are inserted into the fixing holes, fastening screws are assembled on the front side of the blade fixing body, and the fastening screws sequentially penetrate through the front side fixing holes, the front side fixing cylinders, the rear side fixing cylinders and the rear side fixing holes and then extend to the rear end of the blade fixing body; a fastening screw groove is formed in the end part of the fastening screw rod; according to the water jet propulsion impeller structure with the detachable blades, the blade installation bodies are arranged at the blade installation positions of the outer wall of the hub, after the blades are damaged, only the damaged blades need to be replaced from the hub of the impeller, operation is easy and convenient, and the economical efficiency of replacing the single blade is better than that of replacing the impeller.

Description

Technical Field

[0001] The utility model relates to the technical field of impeller structures, in particular to a water-jet propulsion impeller structure with detachable blades. Background Art

[0002] Waterjet propulsion is a method of ship propulsion. The water jet pump rotates the impeller, drawing water from the bottom of the ship. After being rectified by the guide vanes, it is ejected from the nozzle at high speed. The difference in momentum between the inlet and outlet water flows generates thrust, propelling the carrier forward. The water drawn in from the bottom of the ship is often accompanied by pebbles from the bottom of the channel and floating wood blocks on the water surface, which strike the impeller at high speed and damage the blades. The impeller of a waterjet propulsion pump generally has more than four blades, evenly distributed on the impeller hub. Traditional impeller blades and hub are integrated. Damaging a single blade requires replacing the entire impeller, making assembly and disassembly complicated.

[0003] In the prior art, replaceable blades are connected by bolts. This connection method is prone to tooth backing of the bolts during use, which affects the connection strength of the blades. Therefore, the prior art needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a water jet propulsion impeller structure with detachable blades to solve the problems raised in the above background technology.

[0005] The cam is secured to the rear of the blades with a lever, having two latches that are secured to the front of the blades and a spring that allows the bolt to be locked into place when the blades are driven by the cam.

[0006] Furthermore, anti-slip rods are installed at both ends of the outer wall of the anti-slip cylinder, and the inner wall of the anti-slip rod is provided with spiral teeth, and the spiral teeth cooperate with the external thread of the fastening screw.

[0007] Furthermore, sealing components are assembled on both the front and rear ends of the fastening screw, and the sealing components are fitted to the outer wall of the blade fixing body.

[0008] Furthermore, the sealing assembly includes a rubber pad a and a rubber pad b, and a rubber block is assembled between the rubber pad a and the rubber pad b.

[0009] Furthermore, the outer diameters of the rubber pad a and the rubber pad b are both larger than the inner diameter of the fixing hole.

[0010] Furthermore, an inner wall of the fixing cylinder is provided with an internal thread, and the internal thread matches the external thread of the fastening screw.

[0011] Furthermore, a reinforcing rib is installed at the end edge of the blade, and the shape of a bulge is formed from low to high from one end of the reinforcing rib to the other end of the reinforcing rib. One end of the reinforcing rib exceeds one end of the end edge of the blade, and the starting end of the blade is provided with a chamfer, and the blade is inclined.

[0012] By adopting the above technical solution, the strength of the blade installation is achieved.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the water jet propulsion impeller structure with detachable blades is

[0014] By arranging a blade mounting body at the blade mounting position on the outer wall of the hub, after a blade is damaged, it is only necessary to replace the damaged blade from the impeller hub. The operation is simple, and replacing a single blade is much more economical than replacing the impeller. The blade mounting body and the blade are connected and fixed by a fastening screw, and an anti-slip screw and an anti-slip cylinder are provided at the end of the fastening screw to prevent the fastening screw from tooth retreat, thereby improving the connection strength of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the blade fixing body and blades of the utility model;

[0017] Figure 3 This is a schematic diagram of the fastening screw of the utility model;

[0018] Figure 4 This is a schematic diagram of the anti-drop tube of the utility model.

[0019] In the figure: 1. Hub; 2. Blade fixing body; 3. Blade; 4. Fixing hole; 5. Internal thread; 6. Fixing cylinder; 7. The other end of the reinforcing rib; 8. Reinforcing rib; 9. One end of the reinforcing rib; 10. Fastening screw; 11. Rubber pad a; 12. Rubber block; 13. Rubber pad b; 14. Fastening screw groove; 15. Anti-slip cylinder; 16. Anti-slip screw; 17. Chamfer; 18. Anti-slip rod; 19. Spiral groove; 20. Blade fixing cavity. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4 The utility model provides a technical solution: a blade-detachable water jet propulsion impeller structure, including a hub 1, an outer wall of the hub 1 is evenly and equidistantly equipped with a blade fixing body 2 along its axis, and a blade fixing cavity 20 is opened inside the blade fixing body 2, and a blade 3 is inserted into the interior of the blade fixing cavity 20, and a fixing tube 6 is installed on the front and rear sides of the lower end of the blade 3. The inner walls of the front and rear sides of the blade fixing cavity 20 are penetrated by fixing holes 4, and the fixing tube 6 is inserted into the fixing hole 4. The front side of the blade fixing body 2 is equipped with a fastening screw 10, and the fastening screw 10 passes through the front fixing hole 4, the front fixing tube 6, the rear fixing tube 6 and the rear fixing hole 4 in sequence and then extends to the rear end of the blade fixing body 2. A fastening screw groove 14 is opened at the end of the fastening screw 10, and an anti-slip screw 16 is screwed inside the fastening screw groove 14, and an anti-slip cylinder 15 is sleeved on the outside of the fastening screw 10.

[0022] Specifically, the hub 1 is arranged in a circular shape, and six blade fixing bodies 2 are evenly and equidistantly installed on the outer wall of the hub 1 along its axis. Each blade fixing body 2 is a rectangular parallelepiped, and a blade 3 is arranged at each blade fixing body 2. The lower end of the blade 3 can be removed and inserted into the blade fixing cavity 20 in the blade fixing body 2, and after the blade 3 is inserted into the blade fixing cavity 20, the fixing tubes 6 at the front and rear ends of the blade 3 can be inserted into the corresponding fixing holes 4. The outer wall of the fixing tube 6 and the inner wall of the fixing hole 4 are transitionally matched and concentrically arranged. The blade 3 is fixed in the blade fixing cavity 20 by tightening the screw 10 through the fixing hole 4 and the fixing tube 6 in sequence.

[0023] Anti-slip rods 18 are installed at both ends of the outer wall of the anti-slip cylinder 15 . The inner wall of the anti-slip rod 18 is provided with spiral teeth 19 , which cooperate with the external thread of the fastening screw 10 .

[0024] Specifically, the anti-slip screw 16 can be screwed into the fastening screw groove 14, and the anti-slip cylinder 15 is sleeved on the outside of the fastening screw 10. At this time, the anti-slip rod 18 can be stuck on the outer wall of the fastening screw 10 to tighten the fastening screw 10.

[0025] The front and rear ends of the fastening screw 10 are both equipped with sealing components, and the sealing components are both fitted with the outer wall of the blade fixing body 2.

[0026] Specifically, after the fastening screw 16 is fixed, the outer walls on both the front and rear sides of the blade fixing body 2 are sealed by the sealing assembly.

[0027] The sealing assembly includes a rubber pad a11 and a rubber pad b13 , with a rubber block 12 assembled between the rubber pad a11 and the rubber pad b13 .

[0028] Specifically, the rubber pad a11 and the rubber pad b13 can seal the gap between the fastening screw 16 and the fixing hole 4 .

[0029] The outer diameters of the rubber pads a11 and b13 are both larger than the inner diameter of the fixing hole 4 .

[0030] Specifically, the rubber pad a11 and the rubber pad b13 can fit tightly against the outer wall of the blade fixing body 2 after installation.

[0031] The inner wall of the fixing cylinder 6 is provided with an internal thread 5 , which matches the external thread of the fastening screw 10 .

[0032] Specifically, the fixing cylinder 6 is connected to the fastening screw 10 by threaded connection.

[0033] A reinforcing rib 8 is installed at the end edge of the blade 3, and the shape of the reinforcement rib 8 from one end 9 to the other end 7 of the reinforcement rib 8 is raised from low to high. One end 9 of the reinforcement rib 8 exceeds one end of the end edge of the blade 3. The starting end of the blade 3 is provided with a chamfer 17, and the blade 3 is inclined.

[0034] Specifically, the reinforcement rib 8 is a raised reinforcement rib or a concave reinforcement rib, which can increase the stability of the blade 3. The starting end of the blade 3 is provided with a chamfer 17 to reduce resistance. The blade 3 is inclined to enhance the cutting water flow.

[0035] Working process and principle: During use, when the blade 3 needs to be replaced, the blade 3 is removed from the blade fixing body 2 and the new blade 3 is installed. During installation, first insert the fixing cylinder 6 on the blade 3 into the fixing hole 4, and then screw the fastening screw 10 into the fixing hole 4 and the fixing cylinder 6 to fix the blade 3. After the end of the fastening screw 10 passes through the blade fixing body 2, the anti-slip screw 16 is screwed into the fastening screw groove 14. At this time, the anti-slip cylinder 15 is sleeved on the outside of the fastening screw 10, and the anti-slip rod 18 is stuck on the outside of the fastening screw 10, thereby installing the blade 3.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0037] While the present invention has been described above with reference to exemplary embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as no structural conflicts exist, the various features of the disclosed embodiments may be combined with one another in any manner. The omission of an exhaustive description of these combinations in this specification is solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A water jet propulsion impeller structure with detachable blades, comprising a hub (1), characterized in that: The outer wall of the hub (1) is uniformly and equidistantly equipped with blade fixing bodies (2) along its axis, the interior of the blade fixing body (2) is provided with a blade fixing cavity (20), the interior of the blade fixing cavity (20) is plugged with a blade (3), the lower end of the blade (3) is provided with fixing cylinders (6) on both the front and rear sides, the inner walls of the front and rear sides of the blade fixing cavity (20) are provided with fixing holes (4), the fixing cylinders (6) are plugged into the fixing holes (4), and the front side of the blade fixing body (2) is provided with a fastening screw. (10), the fastening screw (10) passes through the front fixing hole (4), the front fixing cylinder (6), the rear fixing cylinder (6) and the rear fixing hole (4) in sequence and then extends to the rear end of the blade fixing body (2), the end of the fastening screw (10) is provided with a fastening screw groove (14), the interior of the fastening screw groove (14) is screwed with an anti-slip screw (16), the exterior of the anti-slip screw (16) is sleeved with an anti-slip cylinder (15), and the anti-slip cylinder (15) is sleeved on the exterior of the fastening screw (10).

2. The water jet propulsion impeller structure with detachable blades according to claim 1, characterized in that: Anti-slip rods (18) are installed at both ends of the outer wall of the anti-slip cylinder (15), and spiral teeth (19) are provided on the inner wall of the anti-slip rod (18). The spiral teeth (19) cooperate with the external threads of the fastening screw (10).

3. The water jet propulsion impeller structure with detachable blades according to claim 1, characterized in that: The front and rear ends of the fastening screw (10) are both equipped with sealing components, and the sealing components are both arranged to fit the outer wall of the blade fixing body (2).

4. The water jet propulsion impeller structure with detachable blades according to claim 3, characterized in that: The sealing assembly comprises a rubber pad a (11) and a rubber pad b (13), wherein a rubber block (12) is assembled between the rubber pad a (11) and the rubber pad b (13).

5. The water jet propulsion impeller structure with detachable blades according to claim 4, characterized in that: The outer diameters of the rubber pad a (11) and the rubber pad b (13) are both larger than the inner diameter of the fixing hole (4).

6. The water jet propulsion impeller structure with detachable blades according to claim 1, characterized in that: An internal thread (5) is formed on the inner wall of the fixing cylinder (6), and the internal thread (5) matches the external thread of the fastening screw (10).

7. The water jet propulsion impeller structure with detachable blades according to claim 1, characterized in that: A reinforcing rib (8) is installed at the end edge of the blade (3), and a convex shape is formed from low to high from one end (9) of the reinforcing rib (8) to the other end (7) of the reinforcing rib (8), and one end (9) of the reinforcing rib (8) exceeds one end of the end edge of the blade (3). The starting end of the blade (3) is provided with a chamfer (17), and the blade (3) is inclined.

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