Composite sheath for embedded slag-slurry pump

Abstract

A composite sheath for an embedded slag-slurry pump, comprising a rubber sleeve (10), a metal framework (20), and a separation tongue (30). The separation tongue (30) is made of a recrystallized silicon carbide ceramic material; recesses (31) are formed in the back surface of the separation tongue (30); protruding blocks (21) are arranged on the metal framework (20); the recesses (31) are matched with the protruding blocks (21); and the metal framework (20) and the separation tongue (30) are integrally embedded in the rubber sleeve (10) by using a rubber injection molding process. The composite sheath has a long service life.

Description

Composite sheath for mosaic slurry pump Technical Field

[0001] The invention relates to the technical field of slurry pump accessories, in particular to a composite sheath for an inlaid slurry pump. Background Art

[0002] Mining slurry pumps are mainly used to transport slurries containing solid particles such as mill discharge, flotation and concentrate. In particular, the slurry discharged from the mill has large particle size and high concentration, which shortens the life of the slurry pump jacket. The jacket is an important part of the slurry pump flow path, and the life of the jacket directly affects the service life of the slurry pump. In the existing technical solutions, the jacket material is generally made of all-rubber or silicon carbide ceramic material. During the actual use of the slurry pump, the rubber jacket tongue position wears the fastest compared to other positions. When the jacket size is large, the silicon carbide ceramic is more difficult to sinter and form, and the shape of the inner cavity of the jacket is irregular. The ceramic at the tongue is greatly impacted by the slurry, which is prone to breakage and fragmentation, so that the wear resistance of the ceramic cannot be effectively exerted.

[0003] Summary of the Invention

[0004] The object of the present invention is to provide a composite sheath for an inlaid slurry pump, which has the characteristic of a long service life.

[0005] The technical solution adopted by the present invention is: a composite sheath for an embedded slurry pump, comprising a rubber sleeve, a metal frame, and a partition tongue. The partition tongue is prefabricated with recrystallized silicon carbide ceramic material, and a groove is provided on the back of the partition tongue. A protrusion is provided on the metal frame, and the groove and the protrusion match each other. At the same time, the metal frame and the partition tongue are integrally embedded in the rubber sleeve using a rubber injection molding process.

[0006] The thickness of the rubber sleeve wrapping the tongue is 5-10 mm.

[0007] The cross section of the groove is circular, square or other irregular shapes.

[0008] A plurality of metal blocks are arranged on the metal skeleton.

[0009] Compared with the prior art, the present invention has the advantages of longer service life. The composite jacket for the inlaid slurry pump of the present invention is prefabricated with recrystallized silicon carbide ceramic material to ensure that it has better wear resistance. At the same time, by embedding the tongue in the rubber jacket, and the groove at the bottom of the tongue and the protrusion of the metal skeleton are matched and installed together, the tongue has a certain support and is relatively stable; and the elasticity of the rubber makes the tongue made of ceramic less prone to brittle fracture when subjected to impact loads. That is, the wear resistance of ceramics and the elasticity of rubber are fully utilized, the wear on the tongue of the jacket is reduced, and the service life of the jacket is increased. According to actual verification, the service life of the jacket can be increased by more than 2 times. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0011] FIG1 is an exploded perspective view of a composite jacket for a mosaic slurry pump according to an embodiment of the present invention;

[0012] FIG2 is a front view of a composite sheath for a mosaic slurry pump according to an embodiment of the present invention;

[0013] FIG3 is a left sectional view of FIG2;

[0014] FIG4 is a perspective view of the partition tongue of the present invention from the rear perspective.

[0015] In the figure: 10, rubber sleeve; 20, metal frame; 21, protrusion; 22, metal block; 30, tongue; 31, groove. DETAILED DESCRIPTION

[0016] 1 to 4 : The composite jacket for the mosaic slurry pump is usually composed of a front jacket and a rear jacket symmetrically distributed front to back. This embodiment is described with one jacket (front jacket or rear jacket).

[0017] Specifically:

[0018] The sheath includes a rubber sleeve 10, a metal skeleton 20, and a partition tongue 30. The partition tongue 30 is prefabricated with recrystallized silicon carbide ceramic material. A groove 31 is provided on the back of the partition tongue 30, and a protrusion 21 is provided on the metal skeleton 20, and the groove 31 and the protrusion 21 match. That is, during assembly, the protrusion 21 is stuck in the corresponding groove 31, and the back of the partition tongue 30 and the side of the metal skeleton 20 with the protrusion 21 are in contact. At the same time, after the metal skeleton 20 and the partition tongue 30 are assembled together, they are embedded in the rubber sleeve 10 as a whole using a rubber injection molding process. That is, the rubber sleeve 10 covers the metal skeleton 20 and the partition tongue 30 as a whole. In this way, by organically combining the high wear resistance of ceramics and the good elasticity of rubber, and providing the partition tongue 30 with a relatively stable support, the service life of the sheath is effectively extended.

[0019] Optimized:

[0020] The thickness of the rubber sleeve 10 covering the tongue 30 is 5-10 mm. That is, the surface of the tongue 30 is 5-10 mm from the flow-through surface of the rubber sleeve 10. This reasonably designed thickness of the rubber sleeve 10 protects the tongue 30 from significant vibration and slurry impact during use, reducing the chance of the tongue 30 falling off or cracking.

[0021] The cross section of the groove 31 is circular, square or other irregular shapes. The cross section refers to the transverse section rather than the longitudinal section.

[0022] The metal frame 20 is provided with a plurality of metal blocks 22 for forming bolt holes on the metal frame 20. The metal blocks 22 can be pre-set on the metal frame 20 by welding or the like, or can be formed by making the metal frame 20 partially thicker when preparing the metal frame 20.

[0023] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A composite sheath for an embedded slurry pump, comprising a rubber sheath (10), a metal frame (20), and a tongue (30), characterized in that: The partition tongue (30) is prefabricated with a recrystallized silicon carbide ceramic material, and a groove (31) is provided on the back of the partition tongue (30). A convex block (21) is provided on the metal frame (20), and the groove (31) and the convex block (21) match each other. At the same time, the metal frame (20) and the partition tongue (30) are integrally embedded in the rubber sleeve (10) by a rubber injection molding process.

2. The composite sheath for a mosaic slurry pump according to claim 1, characterized in that: The thickness of the rubber sleeve (10) wrapping the partition tongue (30) is 5-10 mm.

3. The composite sheath for a mosaic slurry pump according to claim 1, characterized in that: The cross section of the groove (31) is circular, square or other irregular shapes.

4. The composite sheath for a mosaic slurry pump according to claim 1, characterized in that: A plurality of metal blocks (22) are provided on the metal frame (20).

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