Slurry pump impeller

Abstract

A slurry pump impeller, comprising an impeller main body (10) and multiple wear-resistant ceramic inserts (20), the impeller main body (10) being made of a hard alloy; the impeller main body comprises a front cover plate (101), a rear cover plate (102) and multiple blades (103), the front cover plate (101) and the rear cover plate (102) being disposed opposite each other, the multiple blades (103) being disposed between the front cover plate (101) and the rear cover plate (102), and the front cover plate (101) and the rear cover plate (102) being connected by means of the multiple blades (103); multiple grooves (30) are formed on the impeller main body (10) at locations thereof which are prone to wear, and each wear-resistant ceramic insert (20) is disposed in a groove (30) and fixedly connected to the impeller main body (10); a fluid suction inlet (40) is provided in the middle of the front cover plate (101). By means of the wear-resistant ceramic inserts (20), local wear resistance of the slurry pump impeller can be improved, so that the service life of the slurry pump impeller is increased, and the problem of short service life of a slurry pump impeller in semi-autogenous grinding working conditions is solved. Because the impeller main body is made of a hard alloy, the mechanical performance of the slurry pump impeller is stable.

Description

Slurry pump impeller Technical Field

[0001] The present application relates to the technical field of slurry pumps, and in particular to a slurry pump impeller. Background Art

[0002] Slurry pumps are widely used in industries such as mining, power plants, metallurgy, and the chemical industry to transport fluids containing solid particles. During slurry pump operation, impeller life is crucial for determining the pump's hydraulic performance and operational stability. Existing slurry pump impellers are mostly made of rubber. However, rubber has poor hardness, corrosion resistance, and wear resistance, and its mechanical properties are unstable. It is also prone to localized wear, leading to failure and a short impeller life. Therefore, improving impeller life is a pressing issue.

[0003] Utility Model Content

[0004] An embodiment of the present application provides a slurry pump impeller having good hardness, wear resistance, corrosion resistance, and stability, and a long service life.

[0005] The embodiment of the present application provides a slurry pump impeller, comprising an impeller body and a plurality of wear-resistant ceramic inserts, wherein the impeller body is made of cemented carbide;

[0006] The impeller body includes a front cover plate, a rear cover plate and a plurality of blades, the front cover plate and the rear cover plate are arranged opposite to each other, the plurality of blades are arranged between the front cover plate and the rear cover plate, and the front cover plate and the rear cover plate are connected by the plurality of blades;

[0007] A plurality of grooves are provided on the impeller body at a location prone to wear, and each of the wear-resistant ceramic inserts is provided in each of the grooves and is fixedly connected to the impeller body;

[0008] A fluid suction port is provided in the middle of the front cover.

[0009] In the slurry pump impeller described in the embodiment of the present application, the plurality of grooves are provided on the inner side surface of the front cover plate facing the rear cover plate, and are spaced apart along the circumferential direction of the inner side surface of the front cover plate.

[0010] In the slurry pump impeller described in the embodiment of the present application, the plurality of grooves are provided on the inner side surface of the rear cover plate facing the front cover plate, and are spaced apart along the circumferential direction of the inner side surface of the rear cover plate.

[0011] In the slurry pump impeller described in the embodiment of the present application, a plurality of the grooves are provided on the inner surface of the fluid suction port.

[0012] In the slurry pump impeller described in the embodiment of the present application, a plurality of the grooves are provided on the working surface of each blade.

[0013] In the slurry pump impeller described in the embodiment of the present application, each of the wear-resistant ceramic inserts is fixedly connected to the impeller body by an adhesive.

[0014] In the slurry pump impeller described in the embodiment of the present application, the plurality of wear-resistant ceramic inserts include at least one of silicon carbide ceramics, silicon nitride bonded silicon carbide ceramics, silicon oxide ceramics bonded silicon carbide ceramics, and recrystallized ceramics.

[0015] In the slurry pump impeller described in the embodiment of the present application, the impeller body is cast in one piece.

[0016] In the slurry pump impeller described in the embodiment of the present application, a raised portion is provided in the middle of the rear cover plate, and a threaded hole for cooperating with the pump shaft of the slurry pump is provided at the center of the raised portion.

[0017] In the slurry pump impeller described in the embodiment of the present application, each of the blades is in the shape of a circular arc.

[0018] The slurry pump impeller provided in the embodiments of the present application features multiple grooves in easily worn areas of the impeller body, each containing a wear-resistant ceramic insert. Leveraging the high hardness, wear resistance, and corrosion resistance of the wear-resistant ceramic, the impeller's localized wear resistance is enhanced, extending its lifespan and resolving the short lifespan of slurry pump impellers operating in semi-autogenous grinding conditions. Furthermore, the use of a carbide-based impeller body ensures stable mechanical properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0020] FIG1 is a cross-sectional view of a slurry pump impeller provided in an embodiment of the present application.

[0021] FIG2 is a schematic structural diagram of an impeller body from one perspective provided in an embodiment of the present application.

[0022] FIG3 is a schematic structural diagram of the impeller body from another perspective provided in an embodiment of the present application.

[0023] FIG4 is a structural schematic diagram of a slurry pump impeller from one perspective provided in an embodiment of the present application.

[0024] FIG5 is a schematic structural diagram of the slurry pump impeller from another perspective provided in an embodiment of the present application.

[0025] Explanation of the accompanying figures: 10 - impeller body 20 - wear-resistant ceramic insert 30 - groove 40 - fluid suction port 50 - adhesive 60 - raised portion 70 - threaded hole 101 - front cover 102 - rear cover 103 - blade 1000 - slurry pump impeller DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0029] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0030] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0031] 1 to 5 , the slurry pump impeller 1000 includes an impeller body 10 and a plurality of wear-resistant ceramic inserts 20 , wherein the impeller body 10 is made of cemented carbide.

[0032] The impeller body 10 is made of cemented carbide, which can improve the stability of the mechanical performance of the slurry pump impeller 1000.

[0033] The number of the wear-resistant ceramic inserts 20 can be set according to actual conditions and is not specifically limited here.

[0034] The impeller body 10 includes a front cover plate 101 , a rear cover plate 102 and a plurality of blades 103 . The front cover plate 101 and the rear cover plate 102 are arranged opposite to each other. The plurality of blades 103 are arranged between the front cover plate 101 and the rear cover plate 102 . The front cover plate 101 and the rear cover plate 102 are connected by the plurality of blades 103 .

[0035] A plurality of grooves 30 are provided on the impeller body 10 at locations prone to wear. Each wear-resistant ceramic insert 20 is disposed in each groove 30 and is fixedly connected to the impeller body 10 .

[0036] Among them, by setting multiple grooves 30 at the easily worn areas on the impeller body 10, a wear-resistant ceramic insert 20 is set in each groove 30, and the high hardness, wear resistance and corrosion resistance of the wear-resistant ceramic are utilized, so as to improve the local wear resistance of the slurry pump impeller 1000, increase the life of the slurry pump impeller 1000, and solve the problem of short life of the slurry pump impeller 1000 in semi-autogenous grinding conditions.

[0037] The use of multiple small wear-resistant ceramic inserts 20 disposed at easily worn locations on the impeller body 10 can address the process difficulty of scaling up wear-resistant ceramics and reduce the cost of the slurry pump impeller 1000. The size of the wear-resistant ceramic inserts 20 can be determined based on the diameter of the body 10 and the ceramic molding process.

[0038] A fluid suction port 40 is provided in the middle of the front cover plate 101 , wherein the fluid enters the slurry pump impeller 1000 through the fluid suction port 40 .

[0039] In some embodiments, as shown in FIG3 , a plurality of grooves 30 are provided on the inner side surface of the front cover plate 101 facing the rear cover plate 102 and are spaced apart along the circumference of the inner side surface of the front cover plate 101. That is, the inner side surface of the front cover plate 101 facing the rear cover plate 102 is a location prone to wear on the impeller body 10.

[0040] In some embodiments, as shown in FIG2 , a plurality of grooves 30 are provided on the inner side surface of the rear shroud 102 facing the front shroud 101 and are spaced apart along the circumference of the inner side surface of the rear shroud 102. That is, the inner side surface of the rear shroud 102 facing the front shroud 101 is a location prone to wear on the impeller body 10.

[0041] In some embodiments, as shown in FIG2 , a plurality of grooves 30 are provided on the inner surface of the fluid suction port 40 . That is, the inner surface of the fluid suction port 40 is a location prone to wear on the impeller body 10 .

[0042] In some embodiments, a plurality of grooves 30 are disposed on the working surface of each blade 103. That is, the working surface of each blade 103 is a position prone to wear on the impeller body 10.

[0043] In some embodiments, each wear-resistant ceramic insert 20 is fixedly connected to the impeller body 10 via an adhesive 50 .

[0044] In some embodiments, the plurality of wear-resistant ceramic inserts 20 include at least one of silicon carbide ceramic, silicon nitride bonded silicon carbide ceramic, silicon oxide ceramic bonded silicon carbide ceramic, and recrystallized ceramic.

[0045] For example, the plurality of wear-resistant ceramic inserts 20 are all silicon carbide ceramics, or a portion of the plurality of wear-resistant ceramic inserts 20 are silicon carbide ceramics, and the remaining portions are silicon nitride-bonded silicon carbide ceramics. In other words, the wear-resistant ceramic inserts 20 can be composed of any one of silicon carbide ceramics, silicon nitride-bonded silicon carbide ceramics, silicon oxide ceramics-bonded silicon carbide ceramics, and recrystallized ceramics, either alone or in combination.

[0046] In some embodiments, the impeller body 10 is integrally cast.

[0047] In some embodiments, as shown in FIG3 , a raised portion 60 is provided in the middle of the rear cover plate 102 , and a threaded hole 70 for coupling with a pump shaft of a slurry pump is provided at the center of the raised portion 60 .

[0048] In some embodiments, each blade 103 is in the shape of an arc.

[0049] In summary, the slurry pump impeller 1000 provided in the embodiment of the present application, by providing a plurality of grooves 30 at easily worn locations on the impeller body 10, and providing a wear-resistant ceramic insert 20 in each groove 30, utilizes the high hardness, wear resistance, and corrosion resistance of wear-resistant ceramics, thereby improving the local wear resistance of the slurry pump impeller 1000, improving the life of the slurry pump impeller 1000, and solving the problem of short life of the slurry pump impeller 1000 in semi-autogenous grinding conditions. In addition, since the impeller body 10 is made of cemented carbide, the mechanical properties of the slurry pump impeller 1000 are stable. Finally, the use of a plurality of small pieces of wear-resistant ceramic inserts 20 provided at easily worn locations on the impeller body 10 can solve the process difficulty of large-scale wear-resistant ceramics, and at the same time can reduce the cost of the slurry pump impeller 1000.

[0050] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0051] The above is a detailed introduction to a slurry pump impeller provided in an embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and core idea of ​​the present application; ordinary technicians in this field should understand that: they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solution to deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. A slurry pump impeller, characterized in that: It comprises an impeller body and a plurality of wear-resistant ceramic inserts, wherein the material of the impeller body is hard alloy; The impeller body comprises a front cover plate, a rear cover plate and a plurality of blades, the front cover plate is arranged opposite to the rear cover plate, the plurality of blades are arranged between the front cover plate and the rear cover plate, and the front cover plate and the rear cover plate are connected through the plurality of blades; A plurality of grooves are arranged at the easily worn part of the impeller body, and each of the wear-resistant ceramic inserts is arranged in each of the grooves and fixedly connected to the impeller body; A fluid suction port is arranged in the middle of the front cover plate.

2. The slurry pump impeller according to claim 1, characterized in that: The plurality of grooves are arranged on the inner side surface of the front cover plate facing the rear cover plate, and are arranged at intervals along the circumferential direction of the inner side surface of the front cover plate.

3. The slurry pump impeller according to claim 1, characterized in that: The plurality of grooves are arranged on the inner side surface of the rear cover plate facing the front cover plate, and are arranged at intervals along the circumferential direction of the inner side surface of the rear cover plate.

4. The slurry pump impeller according to claim 1, characterized in that: A plurality of the grooves are disposed on the inner surface of the fluid suction port.

5. The slurry pump impeller according to claim 1, characterized in that: A plurality of grooves are arranged on the working surface of each blade.

6. The slurry pump impeller according to claim 1, characterized in that: Each of the wear-resistant ceramic inserts is fixedly connected to the impeller body via an adhesive.

7. The slurry pump impeller according to claim 1, characterized in that: The plurality of wear-resistant ceramic inserts include at least one of silicon carbide ceramics, silicon nitride combined with silicon carbide ceramics, silicon oxide ceramics combined with silicon carbide ceramics and recrystallized ceramics.

8. The slurry pump impeller according to claim 1, characterized in that: The impeller body is integrally cast.

9. The slurry pump impeller according to claim 1, characterized in that: A raised portion is arranged in the middle of the rear cover plate, and a threaded hole for matching and connecting with the pump shaft of the slurry pump is arranged at the center of the raised portion.

10. The slurry pump impeller according to claim 1, characterized in that: Each of the blades is in the shape of an arc.

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