A rubber-coated impeller structure

Abstract

This utility model discloses a rubber-coated impeller structure, including an impeller body and a rubber coating covering the outside of the impeller body. The impeller body has multiple blades evenly distributed circumferentially. Each blade has a number of locking grooves evenly distributed circumferentially at its end, and a number of fixing holes evenly distributed on both ends of the blade. The rubber coating is tightly wrapped around the impeller body through the locking grooves and fixing holes. This utility model provides several locking grooves evenly distributed circumferentially at the end of the blades and several fixing holes evenly distributed on both ends of the blades. The rubber coating material fills the locking grooves and fixing holes under high temperature and pressure. After cooling and solidification, the locking grooves form mechanical locks, restricting the rubber coating from sliding along the surface of the impeller body. The rubber coating material in the fixing holes forms a rivet-like fixing structure, further enhancing the connection strength between the rubber coating and the impeller body.

Description

Technical Field

[0001] This utility model relates to the field of impeller manufacturing technology, and in particular to a rubber-coated impeller structure. Background Technology

[0002] In impeller manufacturing, using PEEK material for injection molding overmolded metal inserts combines the high strength of metal with the excellent wear resistance, chemical resistance, and high-temperature resistance of PEEK. However, due to the low elongation at break of PEEK, cracking is prone to occur during injection molding, and the bond between PEEK and the metal insert is insufficient, easily leading to the overmolding layer peeling off, severely affecting the impeller's performance and lifespan. Current technologies typically employ simple surface roughening treatments to enhance bonding, but this method has limited effectiveness and cannot fundamentally solve the aforementioned problems.

[0003] Therefore, it is necessary to design a rubber-coated impeller structure to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a rubber-coated impeller structure.

[0005] The technical solution of this utility model is: a rubber-coated impeller structure, including an impeller body and a rubber coating layer covering the outside of the impeller body; the impeller body has a plurality of blades evenly distributed along the circumference; the ends of the blades are evenly distributed with a plurality of locking grooves along the circumference, and the two ends of the blades are evenly distributed with a plurality of fixing holes; the rubber coating layer is tightly wrapped around the impeller body through the locking grooves and fixing holes.

[0006] The impeller body is made of metal.

[0007] The material of the coating layer is PEEK.

[0008] The locking groove is a dovetail groove arranged vertically, and the two ends of the dovetail groove pass through the two end faces of the blade portion.

[0009] The sharp edge of the dovetail groove has a chamfer.

[0010] The fixing hole is a threaded hole.

[0011] The fixing holes are arranged in a matrix on the end face of the blade.

[0012] By adopting the above technical solution, this utility model has the following beneficial effects: Several locking grooves are evenly distributed circumferentially at the end of the blade portion, and several fixing holes are evenly distributed on both ends of the blade portion. The rubber coating material fills the locking grooves and fixing holes under high temperature and pressure. After cooling and solidification, the locking grooves form a mechanical lock, restricting the rubber coating from sliding along the surface of the impeller body. The rubber coating material in the fixing holes forms a rivet-like fixing structure, further enhancing the connection strength between the rubber coating and the impeller body. Simultaneously, the evenly distributed locking grooves and fixing holes structure allows the shrinkage stress of the rubber coating material during injection molding to be uniformly dispersed, effectively avoiding cracking caused by the low elongation at break of the rubber coating material. Moreover, the locking grooves and fixing holes on the impeller body can be achieved through conventional machining, resulting in low process costs and ease of mass production. It can be widely applied in the manufacturing of various impeller products requiring rubber coating injection molding. Attached Figure Description

[0013] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the impeller body of this utility model.

[0016] The labels in the attached diagram are:

[0017] Impeller body 1, rubber coating layer 2, blade section 3, locking groove 4, fixing hole 5. Detailed Implementation

[0018] (Example 1)

[0019] See Figure 1 and Figure 2 This embodiment of a rubber-coated impeller structure includes an impeller body 1 and a rubber coating layer 2 covering the outside of the impeller body 1; the impeller body 1 has a plurality of blade portions 3 evenly distributed circumferentially; the ends of the blade portions 3 have a plurality of locking grooves 4 evenly distributed circumferentially, and the two end faces of the blade portions 3 have a plurality of fixing holes 5 evenly distributed; the rubber coating layer 2 is tightly wrapped around the impeller body 1 through the locking grooves 4 and the fixing holes 5.

[0020] Furthermore, the impeller body 1 is made of metal, which not only provides structural stability but also facilitates processing.

[0021] Furthermore, the material of the overlay layer 2 is PEEK.

[0022] Furthermore, the locking groove 4 is a dovetail groove arranged vertically, and the two ends of the dovetail groove penetrate the two end faces of the blade portion 3.

[0023] Furthermore, the sharp edges of the dovetail groove are chamfered.

[0024] Furthermore, the fixing hole 5 is a threaded hole, which makes the connection between the adhesive material and the impeller body 1 more stable after curing.

[0025] Furthermore, the fixing holes 5 are arranged in a matrix on the end face of the blade portion 3, which further improves the stability of the connection between the rubber coating layer 2 and the impeller body 1.

[0026] The rubber-coated impeller structure in this embodiment improves the bonding strength between the PEEK material and the impeller body 1 by adopting the design of locking groove 4 and fixing hole 5 through the innovative design of the impeller body 1. At the same time, it avoids the cracking problem of PEEK material after injection molding, thereby improving the overall performance and reliability of the impeller product.

[0027] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An encapsulated impeller structure, characterized by: The impeller body (1) includes an impeller body (1) and a rubber coating layer (2) covering the outside of the impeller body (1); the impeller body (1) has a plurality of blade sections (3) evenly distributed in the circumferential direction; the ends of the blade sections (3) have a plurality of locking grooves (4) evenly distributed in the circumferential direction, and the two ends of the blade sections (3) have a plurality of fixing holes (5) evenly distributed on the two ends of the blade sections (3); the rubber coating layer (2) is tightly wrapped around the impeller body (1) through the locking grooves (4) and the fixing holes (5).

2. A canned impeller structure according to claim 1, wherein: The impeller body (1) is made of metal.

3. The encapsulated impeller structure of claim 1, wherein: The material of the coating layer (2) is PEEK.

4. The encapsulated impeller structure of claim 1, wherein: The locking groove (4) is a dovetail groove arranged vertically, and the two ends of the dovetail groove pass through the two end faces of the blade part (3).

5. The rubber-coated impeller structure according to claim 4, characterized in that: The sharp edge of the dovetail groove has a chamfer.

6. The encapsulated impeller structure of claim 1, wherein: The fixing hole (5) is a threaded hole.

7. The encapsulated impeller structure of claim 1, wherein: The fixing holes (5) are arranged in a matrix on the end face of the blade section (3).

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