Marinating water pump impeller with fish scale bionic structure

Abstract

The utility model discloses a brine pump impeller with fish scale bionic structures, which consists of a hub and blades, the fish scale bionic structures are distributed on the surfaces of the blades in a staggered manner, the fish scale bionic structures are fan-shaped pits, the fan-shaped included angle of each fish scale bionic structure is 120 degrees, the width of each fish scale bionic structure is 1mm, the transverse distance between the adjacent fish scale bionic structures is 1mm-1.5 mm, and the longitudinal distance between the adjacent fish scale bionic structures is 1.5 mm-2mm; according to the utility model, the fish scale bionic structures which are distributed in a staggered manner are designed on the blades, and the fish scale bionic structures are in the shape of fan-shaped pits, so that vortex and microbubble phenomena can be generated, the state of a boundary layer can be changed, a salt deposition environment can be destroyed, and the scaling rate on the surfaces of the blades of the impeller can be reduced; and salt deposition on the surfaces of the blades in the fluid conveying process of the brine pump is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of brine pump impeller structures and relates to a brine pump impeller with a fish scale bionic structure. Background Art

[0002] With the development and utilization of my country's brine resources, scaling during transportation is becoming an increasingly serious problem. Due to the high sodium chloride content in brine, brine pumps are prone to precipitating sodium chloride crystals during brine transport. These small crystals have a strong adsorption capacity, forming scale on the pump's flow surfaces. Scaling significantly impacts the flow path, and in severe cases, can cause flow obstruction. Even if the flow path is not blocked, it can still increase resistance during transportation, reducing transportation efficiency and causing economic losses. Furthermore, once salt particles fall off, the flow in the flow path can collide with and deposit on flow components, causing damage.

[0003] Traditional anti-salting methods require installing rubber sealing plates to eliminate the low-pressure area in the impeller or adding additional pipes to transport fresh water to mix and dilute brine to avoid salting. Such methods have short maintenance cycles and high maintenance costs.

[0004] Therefore, there is an urgent need for a brine pump with an anti-salting structure to solve the above technical problems. Utility Model Content

[0005] The utility model aims to provide a brine pump impeller with a fish scale bionic structure, which solves the problem that the existing brine pump has no anti-salting function.

[0006] The technical solution adopted by the utility model is that the brine pump impeller with fish scale bionic structure is composed of a hub and blades, the surface of the blades is staggered with fish scale bionic structures, and the fish scale bionic structures are fan-shaped pits.

[0007] The fish scale bionic structures on the surface of the blade are arranged in a checkerboard pattern.

[0008] The lateral spacing between adjacent fish scale bionic structures is 1 mm to 1.5 mm, and the longitudinal spacing is 1.5 mm to 2 mm.

[0009] The fan-shaped angle of the fish scale bionic structure is 120°.

[0010] The width of the fish scale bionic structure is 1mm.

[0011] The depth of the fish scale bionic structure is 120μm to 140μm.

[0012] The depth of the fish scale bionic structure is 130μm.

[0013] The beneficial effects of the utility model are as follows:

[0014] (1) By designing staggered fish scale bionic structures on the blades, the fish scale bionic structures are fan-shaped pits. This structure can generate vortexes and microbubbles, change the boundary layer state, destroy the salt environment, and reduce the rate of scaling on the impeller blade surface;

[0015] (2) The fish scale bionic structure can reduce the frictional resistance between the blade and the fluid, reduce the abrasion of the blade surface, ensure that the blade surface is relatively smooth, and reduce the adhesion of salt, thereby reducing the generation of salt on the blade surface during the brine pump's fluid transportation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a brine pump impeller with a fish-scale bionic structure according to the present invention;

[0017] Figure 2 This is a partial enlarged view of the brine pump impeller with a fish scale bionic structure of the utility model;

[0018] Figure 3 This is a diagram of the fish scale bionic structure of the brine pump impeller with the fish scale bionic structure of the utility model;

[0019] In the picture, 1. Hub, 2. Blades, 3. Fish scale bionic structure. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0021] Example 1

[0022] Reference Figure 1 and Figure 2 A brine pump impeller with a fish scale bionic structure includes a hub 1, 15 blades 2 are fixed on the outer surface of the hub 1, and fish scale bionic structures 3 are evenly and staggeredly distributed on the surface of the blades 2. The fish scale bionic structure 3 is a fan-shaped pit, and the fan-shaped angle of the fish scale bionic structure 3 is 120°. The width of the fish scale bionic structure 3 is 1mm, that is, the fan-shaped chord length of 120°.

[0023] See also Figure 3 The lateral spacing between adjacent fish scale bionic structures is 1 mm, the longitudinal spacing is 1.5 mm, and the depth of the fish scale bionic structure is 120 μm.

[0024] This fish scale-inspired structure was created using a short-pulse fiber laser. In nature, the scales of all fish species are not typically smooth, but instead feature a characteristically rough surface. The rough surface treated with the short-pulse fiber laser is consistent with the characteristic rough microstructure of fish scales.

[0025] Moreover, the laser beam scanning speed during the fiber laser processing is very fast, the processing efficiency is high, and the processing cost is low, which is suitable for etching large areas of the blade surface.

[0026] The method of etching a fish-scale structure on the blade surface is used to reduce the generation of salt on the blade surface during the brine pump's fluid transportation process. This technology is feasible, the method is simple, the cost is low, and it is environmentally friendly and pollution-free.

[0027] Example 2

[0028] A brine pump impeller with a fish scale bionic structure comprises a hub 1, 15 blades 2 are welded and fixed on the outer surface of the hub 1, fish scale bionic structures 3 are staggeredly distributed on the surface of the blades 2, the fish scale bionic structures 3 on the surface of the blades 2 are arranged in a checkerboard pattern, the fish scale bionic structures 3 are fan-shaped pits, the fan-shaped angle of the fish scale bionic structure 3 is 120°, and the width of the fish scale bionic structure 3 is 1 mm, that is, the 120° fan-shaped chord length.

[0029] The lateral spacing between adjacent fish-scale bionic structures is 1.5 mm, the vertical spacing is 2 mm, and the depth of the fish-scale bionic structures is 130 μm. This structure can generate vortices and microbubbles, change the boundary layer state, destroy the salt-forming environment, and reduce the rate of scaling on the impeller blade surface.

[0030] At the same time, this fish-scale biomimetic structure also reduces friction between the blade and the fluid, reducing abrasion on the blade surface, ensuring a relatively smooth surface and reducing the adhesion of salt. Furthermore, after etching the fish-scale biomimetic structure onto the blade surface, applying an ultra-smooth coating further reduces scale deposition.

[0031] The fish scale bionic structure of the utility model is processed by laser and material is removed in a point etching manner.

[0032] Reasonable selection of the laser spot diameter can not only ensure the surface processing quality of the blade, but also improve the processing efficiency. The utility model selects a laser spot diameter of 50 microns.

[0033] The laser pulse frequency determines the interval between two adjacent pulse molten pools and the energy output by the laser. The utility model adopts 20kHz as the laser pulse frequency, which not only ensures the continuity of the laser etching path, but also ensures that the energy of a single laser pulse is sufficient to etch a certain depth on the blade surface.

[0034] If the laser scanning speed is too slow, the laser spot will stay in the same position for too long, and the laser spots will overlap with each other, making the depth of the surface pits after processing too large and the processing efficiency too low; and if the laser scanning speed is too fast, adjacent pits will be processed on the blade surface, and continuous etching will be impossible. The utility model adopts a laser scanning speed of 500 mm / s, which can completely etch away the blade material that needs to be removed while ensuring the maximum processing rate.

[0035] Example 3

[0036] A brine pump impeller with a fish scale bionic structure consists of a hub 1 and blades 2. Fish scale bionic structures 3 are staggeredly distributed on the surface of the blades 2. The fish scale bionic structures 3 on the surface of the blades 2 are arranged in a checkerboard pattern. The fish scale bionic structures 3 are fan-shaped pits. The fan-shaped angle of the fish scale bionic structure 3 is 120°, and the width of the fish scale bionic structure 3 is 1 mm, that is, the 120° fan-shaped chord length.

[0037] The lateral spacing between adjacent fish scale bionic structures is 1.2 mm, the longitudinal spacing is 1.8 mm, and the depth of the fish scale bionic structure is 140 μm.

[0038] In this embodiment, the fish scale bionic structure is formed by laser etching, the laser spot diameter is 50 microns, the laser pulse frequency is 20 kHz, and the laser scanning speed is 500 mm / s.

Claims

1. A brine pump impeller having a fish scale bionic structure, comprising a hub (1) and blades (2), characterized in that: Fish scale bionic structures (3) are staggeredly distributed on the surface of the blade (2), and the fish scale bionic structures (3) are fan-shaped pits. The fish scale bionic structures (3) on the surface of the blade (2) are arranged in a checkerboard pattern, and the lateral spacing between adjacent fish scale bionic structures (3) is 1 mm to 1.5 mm, and the longitudinal spacing is 1.5 mm to 2 mm. The fan-shaped angle of the fish scale bionic structure (3) is 120°, the width of the fish scale bionic structure (3) is 1 mm, and the depth of the fish scale bionic structure (3) is 120 μm to 140 μm.

2. The brine pump impeller with a fish scale bionic structure according to claim 1, wherein the depth of the fish scale bionic structure (3) is 130 μm.

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