Impeller of ore pulp stirring tank

Abstract

The utility model discloses an impeller of an ore pulp stirring tank, which relates to the technical field of preparation equipment and comprises a hub, a plurality of blades and a plurality of wear-resistant parts. The blades are integrally connected with the hub and are uniformly arranged in the circumferential direction of the hub; the impeller is simple in structure, the service life of the impeller is effectively prolonged, and the wear-resistant effect of the blades is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of mineral processing equipment technology, and in particular to an impeller for a slurry mixing tank. Background Technology

[0002] In mineral processing, the slurry mixing tank is the core equipment for mixing slurry and reagents, and the operating condition of its impeller is crucial. Currently, traditional slurry mixing tank impellers face many serious problems. Traditional impellers mostly adopt a split design, with the hub and blades connected by bolts or flanges. This connection method makes the connection area extremely susceptible to high-speed erosion by the slurry. Continuous erosion by the slurry can lead to failure of the connecting parts, requiring frequent impeller replacements, which not only increases equipment maintenance costs but also affects the continuity of production.

[0003] Meanwhile, traditional blades are generally made of a single metal material, such as Mn13. Although they have a certain degree of wear resistance, in the harsh environment of high-concentration slurry, the wear resistance of the blades is obviously insufficient, and they are prone to wear and breakage, which greatly shortens the service life of the impeller.

[0004] While existing technologies have alleviated some of these problems to a certain extent by improving connection methods, such as flange connections, they have not fundamentally overcome the defects of poor wear resistance and insufficient structural strength of the blade body. Therefore, it is urgent to develop a new type of impeller for slurry mixing tanks. Utility Model Content

[0005] The purpose of this invention is to provide an impeller for a slurry mixing tank, which solves the problems existing in the prior art. It has a simple structure, effectively improves the service life of the impeller, and effectively improves the wear resistance of the blades.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides an impeller for a slurry mixing tank, comprising: a hub, multiple blades, and multiple wear-resistant parts. The hub is used for rigid connection with a mixing shaft. Each blade is integrally connected to the hub and is evenly arranged along the circumference of the hub. The wear-resistant parts are fixedly connected to and cover the slurry-facing surface of the blades.

[0008] Preferably, the blades adopt a swept-back curved surface design, forming an angle of 15°-30° with the slurry flow direction.

[0009] Preferably, both the hub and the blade are made of high-strength alloy steel, specifically ZG40CrMnMo, which has a surface hardness of HRC45-50 and a tensile strength ≥1200MPa after heat treatment.

[0010] Preferably, the wear-resistant part is made of elastic rubber material.

[0011] Preferably, the coating thickness of the wear-resistant part is 5-10 mm.

[0012] Preferably, the wear-resistant part is made of polyurethane or nitrile rubber.

[0013] Preferably, the hub is provided with a keyway connection structure, which is used to connect with the stirring shaft by a key, and the coaxiality error between the hub and the stirring shaft is ≤0.1mm.

[0014] Preferably, it further includes a transition adhesive layer, which is disposed between the wear-resistant component and the blade to bond and fix the wear-resistant component and the blade.

[0015] Preferably, the thickness of the transition adhesive layer is 0.1-0.3 mm.

[0016] Preferably, the wear-resistant component comprises rubber layers of different colors from the outside to the inside.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] The purpose of this invention is to provide an impeller for a slurry mixing tank. The hub is rigidly connected to the mixing shaft, ensuring stable rotation and accurate power transmission during mixing. The blades are integrally connected to the hub and evenly distributed circumferentially, guaranteeing the integrity and stability of the impeller structure. This improves mixing efficiency and makes the slurry more uniform. The integrated design also reduces the risk of wear and loosening at the connection points due to slurry erosion. Wear-resistant parts cover the blade's slurry-facing surface, directly resisting erosion and wear, effectively protecting the blades, extending their service life, and thus improving the overall working life and reliability of the impeller. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of the impeller of the slurry mixing tank provided by this utility model;

[0021] In the picture: 1. Hub; 2. Blade; 3. Wear-resistant part. Detailed Implementation

[0022] 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.

[0023] The purpose of this invention is to provide an impeller for a slurry mixing tank, which solves the problems existing in the prior art. It has a simple structure, effectively improves the service life of the impeller, and effectively improves the wear resistance of the blades.

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] This utility model provides an impeller for a slurry mixing tank, such as... Figure 1 As shown, the impeller includes: a hub 1, multiple blades 2, and multiple wear-resistant parts 3. The hub 1 is rigidly connected to the stirring shaft. Each blade 2 is integrally connected to the hub 1 and is evenly arranged along the circumference of the hub 1. The wear-resistant parts 3 are fixedly connected and cover the slurry-facing surface of the blades 2. The rigid connection between the hub 1 and the stirring shaft ensures stable rotation of the impeller during stirring and accurate power transmission. The integral connection and even circumferential arrangement of the blades 2 with the hub 1 ensures the integrity and stability of the impeller structure, which is beneficial to improving the stirring effect and making the slurry stirring more uniform. At the same time, the integral connection design reduces the risk of wear and loosening at the connection points caused by slurry scouring. The wear-resistant parts 3 cover the slurry-facing surface of the blades 2, which can directly resist the scouring and wear of the slurry, effectively protecting the blades 2, extending the service life of the blades 2, and thus improving the working life and reliability of the entire impeller.

[0026] In a preferred embodiment, the blade 2 adopts a swept-back curved surface design, forming a 15°-30° angle with the slurry flow direction. This swept-back curved surface design and specific angle, utilizing fluid dynamics principles, effectively reduce the impact force between the slurry and the blade 2 during flow, thus reducing wear on the blade 2. Simultaneously, it guides the slurry to uniformly wash over the entire surface of the blade 2, avoiding excessive localized wear and resulting in more uniform wear of the blade 2. This further extends the service life of the blade 2 and improves the stability and efficiency of the impeller in slurry mixing.

[0027] In a preferred embodiment, both the hub 1 and the blade 2 are made of high-strength alloy steel, specifically ZG40CrMnMo. After heat treatment, the surface hardness reaches HRC45-50, and the tensile strength is ≥1200MPa. The selection of this specific high-strength alloy steel, ZG40CrMnMo, and its heat treatment to achieve the required hardness and tensile strength, gives the hub 1 and blade 2 high strength and fatigue resistance. This allows them to withstand the impact of the slurry during mixing and the stress generated by mechanical operation, ensuring that the hub 1 and blade 2 will not easily deform or crack under long-term, high-load working conditions. This enhances the overall structural strength and stability of the impeller, reducing equipment damage and maintenance costs caused by insufficient material strength.

[0028] In a preferred embodiment, the wear-resistant component 3 is made of elastic rubber material. Elastic rubber material possesses good elasticity and flexibility, effectively buffering the impact of solid particles in the slurry on the blade 2, reducing wear and damage to the blade 2 caused by the impact. Simultaneously, the elasticity of the rubber material can adapt to pressure changes during slurry flow to a certain extent, allowing the wear-resistant component 3 to better conform to the surface of the blade 2, further improving wear resistance and extending the service life of the blade 2.

[0029] In a preferred embodiment, the coating thickness of the wear-resistant component 3 is 5-10 mm. This appropriate coating thickness ensures that the wear-resistant component 3 has sufficient thickness to withstand the wear of the slurry without adding extra weight and cost due to excessive thickness. A thickness of 5-10 mm achieves a good balance between wear resistance and overall performance, ensuring that the wear-resistant component 3 effectively protects the blade 2 without adversely affecting the impeller's rotation, thus maintaining the impeller's normal operating condition.

[0030] In a preferred embodiment, the wear-resistant component 3 is made of polyurethane or nitrile rubber. Both polyurethane and nitrile rubber possess excellent wear resistance, corrosion resistance, and oil resistance, effectively resisting the abrasion of slurry and the erosion of chemicals that may be present therein. This choice of materials allows the wear-resistant component 3 to exhibit good performance under various slurry conditions, improving the impeller's adaptability and reliability in complex slurry environments and extending the service life of both the wear-resistant component 3 and the entire impeller.

[0031] In a preferred embodiment, the hub 1 is provided with a keyway connection structure for keying with the stirring shaft. The coaxiality error between the hub 1 and the stirring shaft is ≤0.1mm. The keyway connection structure enables precise connection and reliable transmission between the hub 1 and the stirring shaft, ensuring the stability and accuracy of power transmission. Strictly controlling the coaxiality error to ≤0.1mm can effectively reduce vibration, noise, and additional wear caused by misalignment, ensuring smooth impeller rotation, improving the overall operating efficiency and stability of the equipment, extending the service life of the equipment, and reducing maintenance costs.

[0032] In a preferred embodiment, the impeller of the slurry mixing tank further includes a transition bonding layer. This transition bonding layer is disposed between the wear-resistant component 3 and the blade 2 to bond and fix the wear-resistant component 3 and the blade 2. The transition bonding layer enhances the bonding strength between the wear-resistant component 3 and the blade 2, ensuring that the wear-resistant component 3 remains firmly attached to the surface of the blade 2 even under prolonged slurry scouring and impact, preventing it from easily detaching and guaranteeing the stability and reliability of the wear-resistant structure. Simultaneously, the transition bonding layer also provides a certain degree of buffering and stress dispersion, reducing stress concentration caused by the material difference between the wear-resistant component 3 and the blade 2, further improving the service life of both the wear-resistant component 3 and the blade 2.

[0033] In a preferred embodiment, the thickness of the transition adhesive layer is 0.1–0.3 mm. A suitable thickness ensures effective bonding without compromising performance due to excessive thickness or thinness. A thickness of 0.1–0.3 mm provides an effective adhesive bond, offering sufficient adhesion to firmly connect the wear-resistant component 3 to the blade 2, without causing additional deformation or affecting the internal stress distribution due to an excessively thick transition layer. This ensures the stability and optimized performance of the entire structure.

[0034] In a preferred embodiment, the wear-resistant component 3 comprises rubber layers of different colors from the outside to the inside. These different colored rubber layers help to visually determine the wear condition of the wear-resistant component 3. When the outer wear-resistant rubber layer wears down to a certain extent, exposing the inner layers of different colors, the operator can promptly assess the wear level and perform appropriate maintenance or replacement. This design facilitates daily maintenance and management of the equipment, allows for timely detection of problems and implementation of corrective measures, prevents damage to the blades 2 due to excessive wear, reduces the probability of equipment failure, and extends the service life of the entire impeller system.

[0035] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An impeller for a slurry mixing tank, characterized in that: include: A hub, which is used for rigid connection with the stirring shaft; Multiple blades, each blade being integrally connected to the hub and evenly arranged along the circumference of the hub; as well as Multiple wear-resistant components are fixedly connected and cover the blade's anti-slurry surface.

2. The impeller of the slurry mixing tank according to claim 1, characterized in that: The blades adopt a swept-back curved surface design, forming an angle of 15°-30° with the direction of slurry flow.

3. The impeller of the slurry mixing tank according to claim 2, characterized in that: Both the hub and the blades are made of high-strength alloy steel, specifically ZG40CrMnMo, which has a surface hardness of HRC45-50 and a tensile strength of ≥1200MPa after heat treatment.

4. The impeller of the slurry mixing tank according to claim 3, characterized in that: The wear-resistant part is made of elastic rubber material.

5. The impeller of the slurry mixing tank according to claim 4, characterized in that: The wear-resistant part has a coating thickness of 5-10 mm.

6. The impeller of the slurry mixing tank according to claim 5, characterized in that: The wear-resistant parts are made of polyurethane or nitrile rubber.

7. The impeller of the slurry mixing tank according to claim 6, characterized in that: The hub is provided with a keyway connection structure, which is used to connect with the stirring shaft by a key, and the coaxiality error between the hub and the stirring shaft is ≤0.1mm.

8. The impeller of the slurry mixing tank according to claim 7, characterized in that: It also includes a transition adhesive layer, which is disposed between the wear-resistant component and the blade to bond and fix the wear-resistant component and the blade.

9. The impeller of the slurry mixing tank according to claim 8, characterized in that: The thickness of the transition adhesive layer is 0.1-0.3 mm.

10. The impeller of the slurry mixing tank according to claim 9, characterized in that: The wear-resistant component comprises rubber layers of different colors from the outside to the inside.

Images