Replaceable hard wear-resistant alloy grinding roller

Abstract

The utility model relates to the technical field of metal grinding rollers, in particular to a replaceable hard wear-resistant alloy grinding roller which comprises a roller body, the roller body comprises a casting base body, a first rubber pad, alloy blocks and a second rubber pad, the first rubber pad is detachably installed on the surface of the casting base body, and the alloy blocks are detachably installed on the surface of the first rubber pad. A first rubber pad is detachably installed between every two adjacent alloy blocks, a second rubber pad is detachably installed between every two adjacent alloy blocks, screw holes are formed in the surfaces of the casting base body, the first rubber pads and the alloy blocks, bolts are in threaded connection with the interiors of the screw holes, and the specific task of rapidly repairing the vertical mill grinding roller can be efficiently completed through the replaceable hard abrasion-resistant alloy grinding roller. And the cast high-chromium alloy block is adopted, the mechanical performance indexes such as hardness, abrasion resistance and impact toughness of the cast high-chromium alloy block are far higher than those of traditional surfacing alloy, the replacement period is shortened for enterprises, the product quality is improved, and stability and reliability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal grinding rollers, in particular to a replaceable hard wear-resistant alloy grinding roller. Background Art

[0002] Vertical mill is a large-scale grinding equipment that integrates crushing, drying, grinding, grading and conveying. It is widely used in cement, electricity, metallurgy, chemical industry, non-metallic minerals and other industries. For vertical mill, the grinding roller is the heart of the vertical mill, and the wear of the grinding roller is the main failure form in the production of vertical mill. And the grinding roller has the highest value, so the repair of the grinding roller has broad economic benefits.

[0003] For vertical mill roller wear, the traditional repair scheme is to remove the roller from the vertical mill and then remove the remaining roller skin, weld the defective part, and then repair the roller tire with wear-resistant alloy. Another way is to directly replace the new roller. The traditional method has a long repair period and is difficult to repair. The other method has a high replacement cost. Now we propose a replaceable hard wear-resistant alloy roller. Utility Model Content

[0004] The main purpose of the utility model is to provide a replaceable hard wear-resistant alloy grinding roller to solve the problems of long repair period, great repair difficulty and high replacement cost proposed in the related art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a replaceable hard wear-resistant alloy grinding roller is provided, including a roller body, the roller body including a casting base, a first rubber pad, an alloy block and a second rubber pad, the first rubber pad is detachably installed on the surface of the casting base, a plurality of alloy blocks are detachably installed on the surface of the first rubber pad, and a second rubber pad is detachably installed between two adjacent alloy blocks.

[0006] Furthermore, the casting base, the first rubber pad and the surface of the alloy block are all provided with screw holes, and bolts are threadedly connected inside the screw holes.

[0007] Furthermore, the alloy blocks are provided in 29 groups.

[0008] Furthermore, the first rubber pad and the second rubber pad are both elastic rubber pads, the thickness of the first rubber pad is 5-8 mm, and the thickness of the second rubber pad is 3-6 mm.

[0009] Furthermore, one side of the alloy block is fitted with one side of the second rubber pad, a clamping block is slidably connected inside the alloy block, a clamping groove is provided on the surface of the second rubber pad, and the clamping block is movably inserted inside the clamping groove.

[0010] Furthermore, a slide groove is provided inside the alloy block, a spring is fixedly installed inside the slide groove, a slider is fixedly installed at one end of the spring, a connecting rod is fixedly installed on the surface of the slider, and a clamping block is fixedly installed on the end of the connecting rod.

[0011] Furthermore, a receiving groove is provided on one side close to the slide groove, and the clamping block is slidably connected inside the receiving groove.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model adopts a cast high-chromium alloy block, whose mechanical properties such as hardness, wear resistance and impact toughness are much higher than those of traditional surfacing alloys, which reduces the loss of the vertical roller grinding roller, and a first rubber pad can be detachably installed on the surface of the casting base, and multiple alloy blocks can be detachably installed on the surface of the first rubber pad, and a second rubber pad can be detachably installed between two adjacent alloy blocks, which is convenient for replacement of wear-resistant alloys, reduces replacement cycles for enterprises, improves product quality, increases enterprise production benefits, and improves stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0015] Figure 2 This is a disassembled structural diagram of the roller body of the utility model.

[0016] Figure 3 This is a cross-sectional structural diagram of the alloy block of the utility model.

[0017] Figure 4 This is a structural diagram of the second rubber pad of the utility model.

[0018] Illustration Description:

[0019] 1. Roller body; 2. Casting base; 3. First rubber pad; 4. Alloy block; 41. Block; 42. Slide groove; 43. Spring; 44. Slider; 45. Connecting rod; 46. Receiving groove; 47. Screw hole; 48. Bolt; 5. Second rubber pad; 51. Slot. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0021] See also Figure 1-4The present embodiment provides a replaceable hard wear-resistant alloy grinding roller, including a roller body 1, the roller body 1 including a casting substrate 2, a first rubber pad 3, an alloy block 4 and a second rubber pad 5, the casting substrate 2 is made of high manganese steel, and on the basis of a traditional casting roller tire substrate, screw holes 47 are opened on both sides of the roller tire, the alloy block 4 is made of powder metallurgy material or high chromium cast iron material, and is made into a required shape and size, two screw holes 47 are opened at positions with less wear at both ends, and the alloy block 4 and the casting substrate 2 are connected by bolts 48, a first rubber pad 3 is detachably installed on the surface of the casting substrate 2, a plurality of alloy blocks 4 are detachably installed on the surface of the first rubber pad 3, a second rubber pad 5 is detachably installed between two adjacent alloy blocks 4, the first rubber pad 3 provides a buffer between the casting substrate 2 and the alloy block 4, and the second rubber pad 5 provides a buffer between two adjacent alloy blocks 4.

[0022] Specifically, screw holes 47 are formed on the surfaces of the casting base 2 , the first rubber pad 3 and the alloy block 4 , and bolts 48 are threadedly connected inside the screw holes 47 .

[0023] In the embodiment of the utility model, the screw hole 47 is a countersunk bolt hole of model M20, and the bolt 48 is an M20 bolt of the same model. The bolt 48 passes through the screw hole 47 to fix the alloy block 4 on the surface of the casting base 2.

[0024] Specifically, 29 groups of the alloy blocks 4 are provided, and the material of the alloy blocks 4 is powder metallurgy material or high chromium cast iron material.

[0025] In the embodiment of the utility model, by setting it to powder metallurgy material or high chromium cast iron material, the loss of the vertical roller grinding roller is reduced. The alloy block 4 is set to 29 groups. The worn alloy block 4 can be disassembled and replaced in time to avoid replacement of the entire block, thereby saving costs.

[0026] Specifically, the first rubber pad 3 and the second rubber pad 5 are both elastic rubber pads, the thickness of the first rubber pad 3 is 5-8 mm, and the thickness of the second rubber pad 5 is 3-6 mm.

[0027] In the embodiment of the utility model, the first rubber pad 3 provides a buffer between the casting matrix 2 and the alloy block 4 , and the second rubber pad 5 provides a buffer between two adjacent alloy blocks 4 .

[0028] Specifically, one side of the alloy block 4 is fitted with one side of the second rubber pad 5 , a clamping block 41 is slidably connected inside the alloy block 4 , a clamping groove 51 is opened on the surface of the second rubber pad 5 , and the clamping block 41 is movably inserted inside the clamping groove 51 .

[0029] In the embodiment of the utility model, the second rubber pad 5 can be fixed between the two alloy blocks 4 by the matching arrangement of the clamping block 41 and the clamping groove 51, so as to prevent the second rubber pad 5 from being thrown out during the high-speed rotation of the roller body 1.

[0030] Specifically, a slide groove 42 is provided inside the alloy block 4, a spring 43 is fixedly installed inside the slide groove 42, a slider 44 is fixedly installed at one end of the spring 43, a connecting rod 45 is fixedly installed on the surface of the slider 44, and a clamping block 41 is fixedly installed on the end of the connecting rod 45.

[0031] In the embodiment of the utility model, the slide groove 42 is provided so that the slider 44 can slide backwards, thereby providing space for the clamping block 41 , and the spring 43 is provided so that the clamping block 41 can be squeezed and fixed inside the clamping groove 51 .

[0032] Specifically, a receiving groove 46 is opened on one side close to the slide groove 42 , and the clamping block 41 is slidably connected inside the receiving groove 46 .

[0033] In the embodiment of the utility model, the receiving groove 46 is provided to allow the block 41 to have space to move.

[0034] When in use, the replaceable hard wear-resistant alloy grinding roller is divided into an alloy block 4 and a casting matrix 2 based on the original vertical mill grinding roller. The alloy block 4 is divided into 29 blocks along the outer diameter of the grinding roller and evenly arranged along the circumferential direction. M20 screw holes 47 are reserved at both ends of each divided grinding roller alloy block 4, in order to fix the divided grinding roller alloy block 4 to the surface of the casting matrix 2 with M20 bolts 48. A first rubber pad 3 with a thickness of 5-8 mm is covered between the alloy block 4 and the casting matrix 2 to provide a buffer between the alloy block 4 and the casting matrix 2 and offset the impact force generated when the vertical mill grinding roller is working. A second rubber pad 5 with a thickness of 3-6 mm is used between each alloy block 4. In order to prevent the second rubber pad 5 from being thrown out when the roller body 1 rotates, the second rubber pad 5 is more stable between the two alloy blocks 4 through the matching arrangement of the clamping block 41 and the clamping groove 51.

[0035] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A replaceable hard wear-resistant alloy grinding roller, comprising a roller body (1), characterized in that: The roller body (1) comprises a casting base (2), a first rubber pad (3), an alloy block (4) and a second rubber pad (5); the first rubber pad (3) is detachably mounted on the surface of the casting base (2); a plurality of alloy blocks (4) are detachably mounted on the surface of the first rubber pad (3); and a second rubber pad (5) is detachably mounted between two adjacent alloy blocks (4).

2. The replaceable hard wear-resistant alloy grinding roller according to claim 1 is characterized in that: The surfaces of the casting base (2), the first rubber pad (3) and the alloy block (4) are all provided with screw holes (47), and the screw holes (47) are internally threadedly connected with bolts (48).

3. The replaceable hard wear-resistant alloy grinding roller according to claim 1 is characterized in that: The alloy blocks (4) are provided in 29 groups.

4. The replaceable hard wear-resistant alloy grinding roller according to claim 1 is characterized in that: The first rubber pad (3) and the second rubber pad (5) are both elastic rubber pads; the thickness of the first rubber pad (3) is 5-8 mm, and the thickness of the second rubber pad (5) is 3-6 mm.

5. The replaceable hard wear-resistant alloy grinding roller according to claim 1, characterized in that: One side of the alloy block (4) is in contact with one side of the second rubber pad (5); a clamping block (41) is slidably connected inside the alloy block (4); a clamping groove (51) is provided on the surface of the second rubber pad (5); and the clamping block (41) is movably inserted inside the clamping groove (51).

6. The replaceable hard wear-resistant alloy grinding roller according to claim 5, characterized in that: The alloy block (4) is provided with a slide groove (42) inside, a spring (43) is fixedly installed inside the slide groove (42), a slider (44) is fixedly installed at one end of the spring (43), a connecting rod (45) is fixedly installed on the surface of the slider (44), and a clamping block (41) is fixedly installed at the end of the connecting rod (45).

7. The replaceable hard wear-resistant alloy grinding roller according to claim 6, characterized in that: A receiving groove (46) is provided on one side close to the slide groove (42), and the clamping block (41) is slidably connected inside the receiving groove (46).

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