Wear-resistant and corrosion-resistant ceramic pump body

Abstract

The utility model discloses a wear-resistant and corrosion-resistant ceramic pump body which comprises a front pump body and a rear pump body, the inner wall of the front pump body and the inner wall of the rear pump body are provided with lining layers made of wear-resistant ceramic materials, and inner cavities of the lining layers form slurry cavities. The inner lining layer is connected with a gap between the inner wall of the front pump body and the inner wall of the rear pump body through a bonding layer. The lining layer is made of the wear-resistant ceramic material, the service life of the wear-resistant ceramic material is more than three times that of an alloy material under the same condition, and the ceramic pump body is wear-resistant and corrosion-resistant; in addition, the lining layer can be independently replaced after being damaged, product parts are reduced, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pump bodies, in particular to a wear-resistant and corrosion-resistant ceramic pump body. Background Art

[0002] In the mineral processing and smelting industries, slurry pumps are often needed to transport some solid-liquid two-phase flows that are subject to wear and corrosion. In the industry where slurry pumps are used, the working conditions are mostly a mixture of solid particles containing slag and water, and the operating environment is harsh. As a result, traditional slurry pumps have the disadvantages of extremely high failure rate, short maintenance and overhaul cycle, frequent overhaul and spare parts replacement, and high maintenance cost.

[0003] Currently, Chinese patent authorization announcement No. CN211343486U discloses a ceramic pump body, and Chinese patent authorization announcement No. CN205977702U discloses a silicon carbide heavy-duty slurry pump. The above patents are composed of a pump body and front and rear guard plates connected together. The disadvantages are high manufacturing cost, high cost of later parts replacement, the sealing ring is not resistant to abrasion and corrosion, and ceramic processing is difficult. Utility Model Content

[0004] The purpose of the utility model is to provide a wear-resistant and corrosion-resistant ceramic pump body in view of the above-mentioned deficiencies and defects of the prior art. The ceramic pump body is not only wear-resistant and corrosion-resistant, but also can replace worn parts individually, reducing costs, so as to solve the above-mentioned problems.

[0005] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0006] A wear-resistant and corrosion-resistant ceramic pump body comprises a front pump body and a rear pump body, wherein the inner walls of the front pump body and the rear pump body are provided with an inner lining layer made of a wear-resistant ceramic material, the inner cavity of the inner lining layer forms a slurry cavity, and the gap between the inner lining layer and the inner walls of the front pump body and the rear pump body is connected by an adhesive layer.

[0007] In a preferred embodiment of the present invention, the lining layer includes any one of silicon nitride bonded with silicon carbide, alumina ceramics, zirconia ceramics, reaction-sintered silicon carbide, silicon nitride, mullite ceramics, and tungsten carbide.

[0008] Under the same conditions, the use of this material can achieve a lifespan more than three times that of alloy materials. The ceramic pump body is wear-resistant and corrosion-resistant, and can effectively resist the wear of slurry with particles of about 4mm in diameter.

[0009] In a preferred embodiment of the present invention, the adhesive layer includes any one of rubber, fluororubber, nitrile rubber, polyurethane, resin, and EPDM rubber.

[0010] The adhesive layer not only fixes the inner lining layer and the front pump body and the rear pump body, but the adhesive layer is an elastic material with an elastic band sealing effect, which plays a sealing and protective role for the inner lining layer.

[0011] In a preferred embodiment of the present invention, an annular bonding layer extending in the radial direction of the pump body is provided on one side of the bonding layer facing the butt joint surface of the front pump body and the rear pump body.

[0012] In a preferred embodiment of the present invention, the axial thickness of the annular bonding layer is 2-8 mm.

[0013] When the butted end faces of the front pump body and the rear pump body are locked, the annular bonding layer is compressed, which not only plays a role in end face sealing, but also makes the bonding layer difficult to shift between the inner walls of the front pump body and the rear pump body.

[0014] In a preferred embodiment of the present utility model, the outer peripheries of the butt surfaces of the front pump body and the rear pump body are detachably connected via a bolt assembly.

[0015] Replacing other product accessories such as impellers, sleeves, etc. can reduce maintenance time and improve work efficiency.

[0016] In a preferred embodiment of the present invention, a conical surface is provided at one end of the inner lining layer facing the rear guard plate.

[0017] The conical surface is easy to position when it is butt-jointed with the rear guard plate.

[0018] In a preferred embodiment of the present invention, an annular sealing step cooperating with the rear guard plate is provided at one end of the adhesive layer close to the inner lining layer facing the rear guard plate.

[0019] The annular sealing step cooperates with the rear guard plate to form an end face sealing structure, further improving the sealing performance.

[0020] In a preferred embodiment of the present invention, the bonding layer includes a first bonding layer and a second bonding layer, the first bonding layer is used to connect the inner wall of the front pump body and the outer wall of the inner lining layer close to the front pump body, and the second bonding layer is used to connect the inner wall of the rear pump body and the outer wall of the inner lining layer close to the rear pump body.

[0021] During assembly, the first adhesive layer and the second adhesive layer can be filled separately, which is convenient for operation and subsequent disassembly.

[0022] Due to the adoption of the above technical solution, compared with the prior art, the inner lining layer of the utility model is made of wear-resistant ceramic material. The use of this material can achieve a lifespan more than three times that of alloy materials under the same conditions, and the ceramic pump body is wear-resistant and corrosion-resistant; in addition, the inner lining layer can be replaced separately after damage, reducing product parts and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 The utility model is a schematic structural diagram of an embodiment.

[0025] Figure 2 for Figure 1 Longitudinal section view of .

[0026] Figure numerals: front pump body 100 , rear pump body 200 , lining layer 300 , slurry cavity 310 , conical surface 320 , bonding layer 400 , first bonding layer 410 , second bonding layer 420 , annular sealing step 430 , bolt assembly 500 . DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0028] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0029] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, this 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 invention, 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 as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0030] See also Figure 1 to Figure 2 A wear-resistant and corrosion-resistant ceramic pump body is shown, comprising a front pump body 100 and a rear pump body 200, the inner walls of the front pump body 100 and the rear pump body 200 are provided with an inner lining layer 300 made of a wear-resistant ceramic material, the inner cavity of the inner lining layer 300 forms a slurry cavity 310, and the gap between the inner lining layer 300 and the inner walls of the front pump body 100 and the rear pump body 200 is connected by an adhesive layer 400. The inner lining layer 300 of the utility model is made of wear-resistant ceramic material, and the use of this material can achieve a life of more than three times that of alloy materials under the same conditions. The ceramic pump body is wear-resistant and corrosion-resistant, and the ceramic pump body can well resist the slurry wear of particles with a particle size of about 4 mm. Preferably, the inner lining layer 300 includes any one of silicon nitride bonded silicon carbide, alumina ceramics, zirconium oxide ceramics, reaction-sintered silicon carbide, silicon nitride, mullite ceramics, and tungsten carbide.

[0031] In this embodiment, the adhesive layer 400 includes any one of rubber, fluororubber, nitrile rubber, polyurethane, resin, and EPDM rubber. The adhesive layer 400 is formed by filling the gap between the inner walls of the front pump body 100 and the rear pump body 200. The adhesive layer 400 not only plays the role of fixing the inner lining layer 300 and the front pump body 100 and the rear pump body 200, but also is an elastic material with an elastic band sealing effect, which plays a sealing and protective role for the inner lining layer 300. In this embodiment, the side of the adhesive layer 400 facing the butt surface of the front pump body 100 and the rear pump body 200 is provided with an annular adhesive layer 440 extending radially toward the pump body, and the axial thickness L of the annular adhesive layer is 2-8 mm. When the end faces of the front pump body 100 and the rear pump body 200 are locked, the annular adhesive layer 440 is pressed, which not only plays the role of end face sealing, but also makes the adhesive layer 400 not easy to shift between the inner walls of the front pump body 100 and the rear pump body 200.

[0032] In order to facilitate the assembly and disassembly of the utility model, the outer periphery of the butt surface of the front pump body 100 and the rear pump body 200 is detachably connected by a bolt assembly 500. By replacing other product accessories such as impellers and sleeves, the maintenance time can be reduced and the work efficiency can be improved. The adhesive layer 400 includes a first adhesive layer 410 and a second adhesive layer 420. The first adhesive layer 410 is used to connect the inner wall of the front pump body 100 and the outer wall of the lining layer 300 close to the front pump body 100, and the second adhesive layer 420 is used to connect the inner wall of the rear pump body 200 and the outer wall of the lining layer 300 close to the rear pump body 200. In the specific assembly process, the front pump body 100 and the rear pump body 200 are processed and manufactured using cast metal. The front pump body 100 and the lining layer 300 are assembled first, and then the adhesive layer is filled in the gap between the two to form the first adhesive layer 410. The thickness of the first adhesive layer 410 is 1-4 mm. Then, the rear pump body 200 is assembled with the inner lining layer 300, and then the gap between the two is filled with an adhesive layer to form a second adhesive layer 420, the thickness of the second adhesive layer 420 is 1-4 mm. The thickness of the first adhesive layer 410 and the second adhesive layer 420 in the same embodiment are consistent.

[0033] In this embodiment, a conical surface 320 is provided at one end of the inner lining layer 300 facing the rear guard plate, which facilitates positioning when it is docked and assembled with the rear guard plate.

[0034] The adhesive layer 400 in this embodiment is provided with an annular sealing step 430 cooperating with the rear guard plate at one end close to the inner lining layer 300 facing the rear guard plate. The annular sealing step 430 cooperates with the rear guard plate to form an end face sealing structure to further improve the sealing performance.

[0035] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts 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 ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0036] In the description of the present application, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0037] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0038] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0039] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A wear-resistant and corrosion-resistant ceramic pump body, characterized in that: It comprises a front pump body and a rear pump body, wherein the inner walls of the front pump body and the rear pump body are provided with an inner lining layer made of a wear-resistant ceramic material, the inner cavity of the inner lining layer forms a slurry cavity, and the gap between the inner lining layer and the inner walls of the front pump body and the rear pump body is connected by an adhesive layer; An annular adhesive layer extending radially toward the pump body is provided on the side of the adhesive layer facing the docking surface of the front pump body and the rear pump body. When the docking end faces of the front pump body and the rear pump body are locked, the annular adhesive layer is compressed, which not only plays the role of end face sealing, but also makes the adhesive layer not easily shifted between the inner walls of the front pump body and the rear pump body.

2. A wear-resistant and corrosion-resistant ceramic pump body according to claim 1, characterized in that: The lining layer includes any one of silicon nitride bonded with silicon carbide, alumina ceramics, zirconia ceramics, reaction-sintered silicon carbide, silicon nitride, mullite ceramics, and tungsten carbide.

3. The wear-resistant and corrosion-resistant ceramic pump body according to claim 1, characterized in that: The adhesive layer comprises any one of rubber, fluororubber, nitrile rubber, polyurethane, resin and EPDM rubber.

4. The wear-resistant and corrosion-resistant ceramic pump body according to claim 1, characterized in that: The annular bonding layer has an axial thickness of 2-8 mm.

5. The wear-resistant and corrosion-resistant ceramic pump body according to claim 1, characterized in that: The outer peripheries of the butt surfaces of the front pump body and the rear pump body are detachably connected via a bolt assembly.

6. The wear-resistant and corrosion-resistant ceramic pump body according to claim 1, characterized in that: A conical surface is arranged at one end of the inner lining layer facing the rear guard plate.

7. The wear-resistant and corrosion-resistant ceramic pump body according to claim 1, characterized in that: An annular sealing step cooperating with the rear guard plate is arranged at one end of the adhesive layer close to the inner lining layer and facing the rear guard plate.

8. The wear-resistant and corrosion-resistant ceramic pump body according to claim 1, characterized in that: The adhesive layer includes a first adhesive layer and a second adhesive layer, the first adhesive layer is used to connect the inner wall of the front pump body and the outer wall of the lining layer close to the front pump body, and the second adhesive layer is used to connect the inner wall of the rear pump body and the outer wall of the lining layer close to the rear pump body.

Images