Split mounting type ceramic slurry pump impeller structure

Abstract

The utility model discloses a split mounting type ceramic slurry pump impeller structure which comprises a metal framework, a front cover plate assembly, a rear cover plate assembly and a plurality of ceramic blades, the metal framework comprises a front disc, a rear disc and a plurality of metal blades arranged between the front disc and the rear disc at intervals in the circumferential direction, and a strip-shaped through hole is formed in the middle of each ceramic blade. The front cover plate assembly comprises a front cover plate ceramic framework and a front cover plate ceramic side cover, a first cavity for installing the front disc is formed between the front cover plate ceramic framework and the front cover plate ceramic side cover, and a plurality of first installation grooves matched with blade molded lines are formed in the face, facing the ceramic blades, of the front cover plate ceramic framework in the circumferential direction at intervals. The rear cover plate assembly comprises a rear cover plate ceramic framework and a rear cover plate ceramic side cover, a second cavity for installing the rear disc is formed between the rear cover plate ceramic framework and the rear cover plate ceramic side cover, a plurality of second installation grooves matched with the blade molded line are formed in the face, facing the ceramic blades, of the rear cover plate ceramic framework at intervals in the circumferential direction, and a hub is arranged in the middle of the rear disc.

Description

Technical Field

[0001] The utility model relates to the technical field of pump bodies, and particularly relates to an assembled ceramic slurry pump impeller structure. Background Art

[0002] A slurry pump is a device for handling slurry, used to transport coarse particles, abrasive, and high-concentration slurry, and is currently widely used in various departments such as metallurgy, coal, mines, power, building materials, and environmental protection. The impeller of a traditional ceramic slurry pump is integrally sintered. However, at the user site, problems such as slurry concentration, particle size of particulate matter, and off-design conditions of flow rate are likely to occur, and situations such as the working surface, non-working surface of the blade, or the inlet of the impeller being worn through and damaged are prone to occur, resulting in the ceramic impeller on-site having to be scrapped due to excessive local damage.

[0003] Currently, Chinese Patent Application Publication No. CN117028305A discloses a silicon carbide ceramic impeller. This patent consists of a silicon carbide ceramic structure and a metal skeleton structure. The silicon carbide ceramic structure is composed of a silicon carbide ceramic impeller body, a silicon carbide ceramic front cover, a silicon carbide ceramic rear cover, and silicon carbide pins; the silicon carbide pins connect the metal skeleton structure with the silicon carbide ceramic impeller body, the silicon carbide ceramic front cover, and the silicon carbide ceramic rear cover to form a silicon carbide ceramic impeller. Although this patent can achieve the purpose of replaceable components, it cannot quickly position the blades, reducing the impeller assembly and replacement efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide an assembled ceramic slurry pump impeller structure for the above-mentioned deficiencies and defects of the prior art. This assembled ceramic slurry pump impeller structure can replace relevant accessories separately according to the damaged position, and select more wear-resistant structures and materials for the components with greater wear. By choosing appropriate structures and materials, the wear resistance of the impeller can be improved, the service life of the impeller can be extended, and the use cost of customers can be reduced. Moreover, through the installation groove adapted to the blade profile, the blades can be quickly positioned, reducing the impeller assembly and replacement efficiency to solve the above problems.

[0005] The technical problems solved by the utility model can be realized by adopting the following technical solutions:

[0006] An assembled ceramic slurry pump impeller structure includes a metal skeleton, a front cover plate assembly, a rear cover plate assembly, and several ceramic blades.

[0007] The metal skeleton includes a front disc, a rear disc, and several metal blades circumferentially and spacedly arranged between the front disc and the rear disc. The several metal blades correspond to the several ceramic blades. A strip-shaped through hole for inserting the metal blade is provided in the middle of each ceramic blade.

[0008] The front cover plate assembly includes a front cover plate ceramic skeleton and a front cover plate ceramic side cover. There is a first cavity for installing the front disc between the front cover plate ceramic skeleton and the front cover plate ceramic side cover. On the side of the front cover plate ceramic skeleton facing the ceramic blade, a number of first installation grooves adapted to the blade profile are circumferentially spaced.

[0009] The rear cover plate assembly includes a rear cover plate ceramic skeleton and a rear cover plate ceramic side cover. There is a second cavity for installing the rear disc between the rear cover plate ceramic skeleton and the rear cover plate ceramic side cover. On the side of the rear cover plate ceramic skeleton facing the ceramic blade, a number of second installation grooves adapted to the blade profile are circumferentially spaced. A hub is provided in the middle of the rear disc.

[0010] In a preferred embodiment of the present invention, first positioning bosses and second positioning bosses are respectively provided at both axial ends of the ceramic blade. A number of first limiting grooves corresponding to the first positioning bosses are provided on the front cover plate ceramic skeleton, and a number of second limiting grooves corresponding to the second positioning bosses are provided on the rear cover plate ceramic skeleton.

[0011] In a preferred embodiment of the present invention, the metal blade is fixedly welded to the rear disc, and the metal blade is detachably connected to the front disc by screws.

[0012] In a preferred embodiment of the present invention, a first bonding layer is filled in the first cavity, and a second bonding layer is filled in the second cavity.

[0013] In a preferred embodiment of the present invention, a number of weight-reducing grooves are provided on the outer surfaces of the front cover plate ceramic side cover and the rear cover plate ceramic side cover.

[0014] Due to the adoption of the above technical solutions, compared with the prior art, the present invention can separately replace relevant accessories according to the damaged position, and select more wear-resistant structures and materials for the components with larger wear. By selecting appropriate structures and materials, the part production is modularized, the production difficulty is reduced, the wear resistance of the impeller can be improved, the service life of the impeller can be increased, the use cost of the customer can be reduced, and moreover, through the installation grooves adapted to the blade profile, the blades can be quickly positioned, and the impeller assembly and replacement efficiency can be reduced. The assembled ceramic slurry pump impeller structure of the present invention has strong universality of components, can be used for multiple models, and is convenient for mass production. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0017] Figure 2 For Figure 1 It is a schematic structural diagram from another perspective.

[0018] Figure 3 It is one of the exploded views of the structure of an embodiment of the present invention.

[0019] Figure 4 It is the second exploded view of the structure of an embodiment of the present invention.

[0020] Figure 5 It is a sectional view of the front cover assembly of an embodiment of the present invention.

[0021] Figure 6 It is a sectional view of the rear cover assembly of an embodiment of the present invention.

[0022] Figure 7 It is a schematic structural diagram of the metal skeleton of an embodiment of the present invention.

[0023] Figure 8 It is a schematic structural diagram of the ceramic blade of an embodiment of the present invention.

[0024] Figure 9 It is a sectional view of an embodiment of the present invention.

[0025] Reference numerals: metal skeleton 100; front disc 110; rear disc 120; assembly notch 121; positioning groove 122; metal blade 130; screw 140; hub 150; front cover assembly 200; front cover ceramic skeleton 210; first installation groove 211; first limiting groove 212; front cover ceramic side cover 220; weight reduction groove 221; first cavity 230; first bonding layer 231; rear cover assembly 300; rear cover ceramic skeleton 310; second installation groove 311; second limiting groove 312; rear cover ceramic side cover 320; weight reduction groove 321; second cavity 330; second bonding layer 331; ceramic blade 400; first positioning boss 410; second positioning boss 420; strip-shaped through hole 430. Detailed implementation manners

[0026] The preferred embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present utility model more thorough and complete, and to fully convey the scope of the present utility model to those skilled in the art.

[0027] The terms used in the present utility model are for the purpose of describing specific embodiments only and are not intended to limit the present utility model. The singular forms "a", "the", and "said" used in the present utility model and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0028] It should be understood that although the terms "first", "second", "third", etc. may be used in the present utility model to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present utility model, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0029] See Figures 1 to 9 A split-type ceramic slurry pump impeller structure as shown, which includes a metal skeleton 100, a front cover plate assembly 200, a rear cover plate assembly 300, and a plurality of ceramic blades 400.

[0030] The metal skeleton 100 includes a front disc 110, a rear disc 120, and a plurality of metal blades 130 circumferentially and spaced between the front disc 110 and the rear disc 120. The plurality of metal blades 130 correspond to the plurality of ceramic blades 400. A strip-shaped through hole 430 for inserting the metal blade 130 is provided in the middle of each ceramic blade 400. Among them, the metal blade 130 is fixedly connected to the rear disc 120 by welding, and the metal blade 130 is detachably connected to the front disc 110 by screws 140, which is convenient for later disassembly. There are corresponding assembly notches 121 between the hub 150 and the middle of the rear disc 120 for positioning. The rear disc 120 is provided with a positioning groove 122 for cooperating with the end of the metal blade 130.

[0031] The front cover assembly 200 includes a front cover ceramic skeleton 210 and a front cover ceramic side cover 220. There is a first cavity 230 for installing the front disc 110 between the front cover ceramic skeleton 210 and the front cover ceramic side cover 220. On the side of the front cover ceramic skeleton 210 facing the ceramic blade 400, a number of first mounting grooves 211 adapted to the blade profile are circumferentially spaced. The front cover assembly 200 has options such as silicon carbide bonded silicon nitride, silicon carbide bonded silicon nitride + reaction sintered silicon carbide inserts, reaction sintered silicon carbide, etc. according to the usage requirements.

[0032] The rear cover assembly 300 includes a rear cover ceramic skeleton 310 and a rear cover ceramic side cover 320. There is a second cavity 330 for installing the rear disc 120 between the rear cover ceramic skeleton 310 and the rear cover ceramic side cover 320. On the side of the rear cover ceramic skeleton 310 facing the ceramic blade 400, a number of second mounting grooves 311 adapted to the blade profile are circumferentially spaced. The rear cover assembly 300 has options such as silicon carbide bonded silicon nitride, silicon carbide bonded silicon nitride + reaction sintered silicon carbide inserts, reaction sintered silicon carbide, etc. according to the usage requirements.

[0033] Through the first mounting grooves 211 and the second mounting grooves 311 adapted to the blade profile, the ceramic blade 400 can be quickly positioned, reducing the impeller assembly and replacement efficiency. The ceramic blade 400 has options such as silicon carbide bonded silicon nitride, silicon carbide bonded silicon nitride + reaction sintered silicon carbide inserts, reaction sintered silicon carbide, etc. according to the usage requirements.

[0034] At the two axial ends of the ceramic blade 400, a first positioning boss 410 and a second positioning boss 420 are respectively provided. On the front cover ceramic skeleton 210, a number of first limiting grooves 212 corresponding to the first positioning boss 410 are provided. On the rear cover ceramic skeleton 310, a number of second limiting grooves 312 corresponding to the second positioning boss 420 are provided. The structure of the cooperation between the boss and the limiting groove can quickly position and fix the ceramic blade 400, further improving the assembly efficiency.

[0035] The first cavity 230 is filled with a first bonding layer 231, and the second cavity 330 is filled with a second bonding layer 331. The bonding layer is used to fill and bond the ceramic parts and the metal skeleton; when replacing the accessories, the bonding layer can be removed first, and after the replacement is completed, the materials can be re-prepared and bonded. The bonding layer in this embodiment includes resin and silicon carbide material.

[0036] On the outer surfaces of the front cover ceramic side cover 220 and the rear cover ceramic side cover 320 in this embodiment, a number of weight-reducing grooves 221 and 321 are provided to reduce the overall weight.

[0037] The impeller structure of the present utility model is made into an assembled structure, which is divided into a front cover plate assembly 200, ceramic blades 400, a rear cover plate assembly 300, a metal skeleton 100 and an adhesive layer. Through the mutual cooperation of each part, it finally forms a whole. The metal skeleton 100 improves the ability of the impeller structure to bear torque and impact loads, and the ceramic parts improve the wear resistance, corrosion resistance and impact resistance required for the impeller to convey the medium. And the accessories at the corresponding positions can be flexibly replaced according to the degree of wear and the damaged parts, thereby reducing the overall cost of the impeller structure, improving the economic efficiency of the impeller structure in use, and prolonging the service life of the impeller structure.

[0038] According to the damaged position, the relevant accessories of the present utility model can be replaced separately, and more wear-resistant structures and materials are selected for the parts with larger wear. By selecting appropriate structures and materials, the production of parts is modularized, the production difficulty is reduced, the wear resistance of the impeller can be improved, the service time of the impeller can be prolonged, and the use cost of customers can be reduced. Moreover, through the installation groove adapted to the blade profile, the blades can be quickly positioned, and the impeller assembly and replacement efficiency can be reduced. The assembled ceramic slurry pump impeller structure of the present utility model has strong universality of components and can be used for multiple models, which is convenient for mass production.

[0039] Unless otherwise specifically stated, the relative arrangements, numerical expressions and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the said technologies, methods and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0040] In the description of the present application, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inside, outside" refer to the inside and outside of the contour of each component itself.

[0041] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0042] In addition, it should be noted that the use of terms such as "first", "second" etc. to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present application.

[0043] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A split-type ceramic slurry pump impeller structure, characterized in that It includes a metal framework, a front cover plate assembly, a rear cover plate assembly and a number of ceramic blades. The metal framework includes a front disc, a rear disc and a number of metal blades circumferentially spaced between the front disc and the rear disc. The number of metal blades corresponds to the number of ceramic blades. A strip-shaped through hole for inserting the metal blade is provided in the middle of each ceramic blade. The front cover plate assembly includes a front cover plate ceramic framework and a front cover plate ceramic side cover. A first cavity for installing the front disc is provided between the front cover plate ceramic framework and the front cover plate ceramic side cover. A number of first mounting grooves adapted to the blade profile are circumferentially spaced on the surface of the front cover plate ceramic framework facing the ceramic blades. The rear cover plate assembly includes a rear cover plate ceramic framework and a rear cover plate ceramic side cover. A second cavity for installing the rear disc is provided between the rear cover plate ceramic framework and the rear cover plate ceramic side cover. A number of second mounting grooves adapted to the blade profile are circumferentially spaced on the surface of the rear cover plate ceramic framework facing the ceramic blades. A hub is provided in the middle of the rear disc.

2. The assembled ceramic slurry pump impeller structure according to claim 1, wherein, First positioning bosses and second positioning bosses are respectively provided at both axial ends of the ceramic blade. A number of first limiting grooves corresponding to the first positioning bosses are provided on the front cover plate ceramic framework. A number of second limiting grooves corresponding to the second positioning bosses are provided on the rear cover plate ceramic framework.

3. The assembled ceramic slurry pump impeller structure according to claim 1, wherein, The metal blade is fixedly welded to the rear disc, and the metal blade is detachably connected to the front disc by screws.

4. The assembled ceramic slurry pump impeller structure according to claim 1, characterized in that, The first cavity is filled with a first bonding layer, and the second cavity is filled with a second bonding layer.

5. The assembled ceramic slurry pump impeller structure according to claim 1, characterized in that, A number of weight-reducing grooves are provided on the outer surfaces of the front cover plate ceramic side cover and the rear cover plate ceramic side cover.

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