CN112892787A

CN112892787A - Grid plate and crusher

Info

Publication number: CN112892787A
Application number: CN202110048738.5A
Authority: CN
Inventors: 陈科; 肖慧; 王勤福; 朱铁花; 曾韶锋; 夏平; 陈创业; 曾明波; 王国文; 邓华挺
Original assignee: SGIS Songshan Co Ltd
Current assignee: SGIS Songshan Co Ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-06-04
Anticipated expiration: 2041-01-14
Also published as: CN112892787B

Abstract

The invention discloses a grate plate and a crusher, wherein the grate plate comprises a plate body, the surface of the plate body comprises a top surface, a bottom surface and two side surfaces, the top surface is a plane, the bottom surface is a curved surface, the length of a perpendicular line from each position on the bottom surface to the top surface is not completely the same, the side surfaces comprise a base area and a raised area connected with the base area, the boundary between the base area and the raised area is a straight line, the boundary is parallel to the top surface, the base area is positioned between the top surface and the boundary, the raised area is positioned between the boundary and the bottom surface, and the raised area deviates from the middle part of the base area, so that the plate body. The grate plate adopts an asymmetric structure, the structural strength of the grate plate body is pertinently enhanced, the grate plate is not easy to bend and deform due to abrasion in the using process, the service life of the grate plate is prolonged, the use cost of the crusher is reduced, and the grate plate does not need to be rotated in the using process due to the asymmetric structure, so that the grate plate is convenient to use.

Description

Grid plate and crusher

Technical Field

The invention relates to the technical field of crushing devices, in particular to a grid plate and a crusher.

Background

In iron and steel enterprises, sintered cakes produced by a sintering machine enter a crusher, and the crusher crushes the sintered cakes into sintered ores and then sends the sintered ores into a blast furnace for use. The crusher is a large key device in the sintering production process.

The crusher crushes high-temperature sintered cakes, the grid plate is fixedly arranged below the toothed roller, the toothed roller rotates, the crushing teeth fixedly connected with the toothed roller rotate along with the toothed roller, and the crushing teeth pass through gaps between the grid plates. The friction between the grid plate and the high-temperature sintering ore puts high requirements on the structural strength and the wear resistance of the grid plate, but the structural strength and the wear resistance of the existing grid plate are poor, and grid plate breakage accidents are easy to happen, so that the grid plate needs to be replaced frequently, the efficiency of the crusher is reduced, and the use cost is high.

Disclosure of Invention

The invention aims to provide a grid plate and a crusher, wherein the grid plate has higher structural strength and wear resistance, so that the crusher has lower use cost.

In order to achieve the purpose, the invention adopts the following technical scheme:

on one hand, the grid plate comprises a plate body, wherein the surface of the plate body comprises a top surface, a bottom surface and two side surfaces, the top surface is a plane, the top surface and the bottom surface are oppositely arranged, the two side surfaces are oppositely arranged, the bottom surface is a curved surface, the lengths of perpendicular lines from all positions on the bottom surface to the top surface are not completely the same, the side surfaces comprise a base area and a raised area connected with the base area, a boundary between the base area and the raised area is a straight line, the boundary is parallel to the top surface, the base area is located between the top surface and the boundary, the raised area is located between the boundary and the bottom surface, and the raised area deviates from the middle part of the base area, so that the plate body is of an asymmetric structure.

As a preferable aspect of the present invention, the grid plate further includes a build-up layer, the build-up layer is disposed on one side of the plate body, and the build-up layer covers a part of the top surface, a part of the base region, and a part of the protrusion region.

As a preferable aspect of the present invention, the overlay welding layer includes a first overlay welding area covering the top surface, a second overlay welding area covering the base area, and a third overlay welding area covering the protrusion area, the first overlay welding area is disposed on one side of the top surface, one side edge of the second overlay welding area is connected to the first overlay welding area, the other side edge of the second overlay welding area opposite to the first overlay welding area is connected to the third overlay welding area, and one side edge of the third overlay welding area away from the second overlay welding area is flush with the bottom surface.

In a preferred embodiment of the present invention, the thickness of the first build-up bonding area is 15 to 20 mm, and the thickness of each of the second build-up bonding area and the third build-up bonding area is 5 to 10 mm.

In a preferred embodiment of the present invention, the overlay layer is a molybdenum-chromium-boron alloy.

As a preferable mode of the present invention, the maximum length of the perpendicular line from the bottom surface to the top surface is not less than twice the distance between the boundary line and the top surface.

On the other hand, the crusher comprises the grid plate and the mounting frame, wherein the grid plate is fixed on the mounting frame.

As a preferable scheme of the present invention, the mounting frame is provided with a plurality of first notch grooves and a plurality of second notch grooves, the first notch grooves and the second notch grooves are arranged opposite to each other, one end of the plate body is clamped into the first notch grooves, and the other end of the plate body is clamped into the second notch grooves.

As a preferable scheme of the invention, the crusher further comprises a toothed roller and a plurality of crushing teeth, the crushing teeth are arranged on the surface of the toothed roller, the toothed roller is arranged above the grate plate, the toothed roller drives the crushing teeth to rotate, and the surfacing layer and the raised area are arranged in a pressing area of the crushing teeth.

In a preferred embodiment of the present invention, the surface of the crushing tooth is provided with a bead weld region.

The invention has the beneficial effects that:

the grid plate changes the symmetrical structure adopted by the conventional grid plate, compared with the conventional grid plate, the grid plate has the advantages that a part of plate body corresponding to the convex area is added, the structural strength of the plate body is pertinently enhanced, the grid plate is not easy to bend and deform due to abrasion in the using process, the service life of the grid plate is prolonged, the use cost of a crusher is reduced, and the grid plate does not need to be rotated in the using process due to the adoption of the asymmetrical structure, so that the grid plate is convenient to use.

Drawings

FIG. 1 is a schematic structural view of a conventional crusher;

FIG. 2 is a schematic view illustrating a wear pattern of the grate plate of FIG. 1;

FIG. 3 is a schematic view of the bent and deformed grid plate of FIG. 1;

FIG. 4 is a schematic front view of a plate body according to an embodiment of the invention;

FIG. 5 is a schematic front view of a grid plate according to an embodiment of the present invention;

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a side schematic view of FIG. 5;

FIG. 8 is a schematic top view of a mounting frame of an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a crusher according to an embodiment of the present invention.

In the figure:

1. a grid plate; 11. a plate body; 111. a top surface; 112. a bottom surface; 113. a side surface; 1131. a substrate region; 1132. a raised region; 114. a boundary line; 12. a left build-up welding part; 13. a right build-up welding part; 14. a first wear zone; 15. a second wear zone; 16. overlaying a welding layer; 161. a first build-up area; 162. a second build-up welding zone; 163. a third build-up welding zone; 2. a toothed roller; 3. crushing teeth; 4. a mounting frame; 41. a first notch groove; 42. a second notch groove.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the word "over" a first feature or feature in a second feature may include the word "over" or "over" the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under" a second feature may include a first feature that is directly under and obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

As shown in fig. 1 to 3, a conventional crusher comprises a grid plate 1, a toothed roller 2 mounted above the grid plate 1, and a plurality of crushing teeth 3 arranged on the surface of the toothed roller 2, wherein the toothed roller 2 rotates, the grid plate 1 is fixedly mounted, and the toothed roller 2 drives the crushing teeth 3 to pass through a gap between the grid plate 1 and another grid plate 1.

The grid plate 1 is of a symmetrical structure, the grid plate 1 comprises a plate body 11, a left overlaying part 12 and a right overlaying part 13, the left overlaying part 12 and the right overlaying part 13 which are made of wear-resistant materials cover the left side and the right side of the plate body 11, friction can be generated between materials and the left overlaying part 12 and between the materials and the right overlaying part 13 in the rotating process of the crushing teeth 3, the left overlaying part 12 is located in a pressing-down area of the crushing teeth 3, and therefore the friction of the materials to the left overlaying part 12 is strong.

After the surfacing material of the left surfacing part 12 is worn, the wear is accelerated due to the poor wear resistance of the plate body 11, a first wear area 14 is formed on the plate body 11, the structural strength of the grid plate 1 is greatly reduced, the grid plate 1 is bent and deformed, and finally the grid plate 1 falls off to cause accidents.

The right built-up welding part 13 is positioned in the upward area of the crushing tooth 3, in the area, materials are clamped between the crushing tooth 3 and the grate plate 1, the right built-up welding part 13 is slightly abraded, and a second abrasion area 15 is formed. Therefore, when the left weld overlay part 12 of the grid plate 1 is seriously worn, the grid plate 1 needs to be turned, and the right weld overlay part 13 is transferred to the original position of the left weld overlay part 12 to bear the wear, so that the grid plate 1 is prevented from being bent and deformed.

In order to enhance the structural strength of the grid plate 1 and prevent the grid plate 1 from falling off due to bending deformation, as shown in fig. 4, the grid plate of an embodiment includes a plate body 11, the surface of the plate body 11 includes a top surface 111, a bottom surface 112 and two side surfaces 113, the top surface 111 is a plane, the top surface 111 and the bottom surface 112 are arranged opposite to each other, the two side surfaces 113 are arranged opposite to each other, the bottom surface 112 is a curved surface, the length of a perpendicular line from each position on the bottom surface 112 to the top surface 111 is not exactly the same, the side surfaces 113 include a base region 1131 and a protrusion region 1132 connected with the base region 1131, a boundary 114 between the base region 1131 and the protrusion region 1132 is a straight line, the boundary 114 is parallel to the top surface 111, the base region 1131 is located between the top surface 111 and the boundary 114, the protrusion region 1132 is located between the boundary 114 and the bottom surface 112.

The grate plate 1 of the embodiment changes the symmetrical structure adopted by the conventional grate plate 1, compared with the conventional grate plate 1, the grate plate 1 of the embodiment has a part of the plate body 11 corresponding to the protrusion area 1132, the structural strength of the plate body 11 is pertinently enhanced, the grate plate 1 is not easy to bend and deform due to abrasion in the use process, the service life of the grate plate 1 is prolonged, the use cost of the crusher is reduced, and due to the adoption of the asymmetrical structure, the grate plate 1 of the embodiment does not need to be turned in the use process, and the use is convenient.

As shown in fig. 5 to 7, preferably, the grid plate 1 further includes a build-up layer 16, the build-up layer 16 is disposed on one side of the plate body 11, and the build-up layer 16 covers a portion of the top surface 111, a portion of the base region 1131, and a portion of the raised region 1132. The build-up layer 16 of the embodiment is only arranged on one side of the plate body 11, instead of the conventional grid plate 1 which is provided with the left and right build-up

welding parts

12 and 13 which are bilaterally symmetrical, the left build-up welding part 12 and the right build-up welding part 13 need to be manufactured separately, and the build-up layer 16 of the embodiment has low cost.

Further, the build-up layer 16 includes a first build-up region 161 covering the top surface 111, a second build-up region 162 covering the base region 1131, and a third build-up region 163 covering the protrusion region 1132, the first build-up region 161 is disposed on one side of the top surface 111, one side edge of the second build-up region 162 is connected to the first build-up region 161, the other side edge of the second build-up region 162 opposite to the first build-up region is connected to the third build-up region 163, and one side edge of the third build-up region 163 away from the second build-up region 162 is flush with the bottom surface 112. The whole build-up welding layer 16 is of an integral structure, no space exists between the second build-up welding zone 162 and the first build-up welding zone 161, and no space exists between the second build-up welding zone 162 and the third build-up welding zone 163, and the edge of the third build-up welding zone 163 extends to be flush with the bottom surface 112, so that the easily worn areas of the top surface 111 and the side surface 113 of the plate body 11 are better covered, and the plate body 11 is better protected.

The thickness of the first build-up region 161 is preferably 15 to 20 mm, and the thickness of each of the second and third build-up

regions

162 and 163 is preferably 5 to 10 mm. The first weld overlay 161 is subjected to a great pressure applied by the material during the pressing down process of the crushing tooth 3 and strongly rubs against the material, so that the first weld overlay 161 needs a larger thickness, some material is sandwiched between the crushing tooth 3 and the second weld overlay 162 and between the crushing tooth 3 and the third weld overlay 163, the material is driven by the crushing tooth 3 to rub against the second weld overlay 162 or the third weld overlay 163, the second weld overlay 162 and the third weld overlay 163 are worn less than the first weld overlay 161, and the thickness of the second weld overlay 162 and the third weld overlay 163 can be set smaller than the thickness of the first weld overlay 161 to save cost.

Preferably, the weld overlay 16 is a molybdenum-chromium-boron alloy, which has good wear resistance, thereby providing a longer service life for the weld overlay 16.

As shown in fig. 4, in the present embodiment, the maximum length H1 of the perpendicular line from the bottom surface 112 to the top surface 111 is not less than twice the distance between the boundary line 114 and the top surface 111. The area of the protrusion region 1132 cannot be too small, and if the area of the protrusion region 1132 is too small, the board body 11 cannot obtain a large structural strength, resulting in the board body 11 being easily subjected to bending deformation.

As shown in fig. 8, an embodiment of the present invention further provides a crusher, which includes the grid plate 1 and the mounting frame 4 of any of the above embodiments, wherein the grid plate 1 is fixed on the mounting frame 4, and the crusher has a lower use cost because the grid plate 1 has a longer service life and does not need to be turned.

Further, a plurality of first notch grooves 41 and a plurality of second notch grooves 42 are formed in the mounting frame 4, the first notch grooves 41 and the second notch grooves 42 are arranged oppositely, one end of the plate body 11 is clamped into the first notch grooves 41, and the other end of the plate body 11 is clamped into the second notch grooves 42. The installation and the disassembly processes of the grid plate 1 are very simple, and only simple hoisting operation is needed, so that the replacement operation of the grid plate 1 can be completed quickly.

As shown in fig. 9, the crusher further includes a pick roll 2 and a plurality of crushing teeth 3, the crushing teeth 3 are disposed on the surface of the pick roll 2, the pick roll 2 is disposed above the grid plate 1, the pick roll 2 drives the crushing teeth 3 to rotate, and the surfacing layer 16 and the protrusion area 1132 are disposed on the pressing area of the crushing teeth 3. Since the abrasion of the grid plate 1 basically occurs in the pressing-down area of the crushing teeth 3, the overlaying layer 16 and the raised area 1132 are arranged in the pressing-down area of the crushing teeth 3, so that the grid plate 1 can have a long service life.

Furthermore, the surface of the crushing tooth 3 is provided with a bead welding area (not shown in the figure) so that the crushing tooth 3 has a longer service life.

Reference throughout this specification to the description of the terms "preferred," "further," or the like, as used in describing preferred embodiments of the present invention, means that a particular feature, structure, material, or characteristic described in connection with the example or illustration is included in at least one example or illustration of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above examples are only intended to illustrate the details of the invention, which is not limited to the above details, i.e. it is not intended that the invention must be implemented in such detail. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.

Claims

1. A grid plate is characterized by comprising a plate body, wherein the surface of the plate body comprises a top surface, a bottom surface and two side surfaces, the top surface is a plane, the top surface and the bottom surface are oppositely arranged, the two side surfaces are oppositely arranged, the bottom surface is a curved surface, the lengths of perpendicular lines from all positions on the bottom surface to the top surface are not identical, the side surfaces comprise a base area and a raised area connected with the base area, a boundary between the base area and the raised area is a straight line, the boundary is parallel to the top surface, the base area is positioned between the top surface and the boundary, the raised area is positioned between the boundary and the bottom surface, and the raised area deviates from the middle part of the base area, so that the plate body is of an asymmetric structure.

2. The grid plate of claim 1, further comprising a weld overlay disposed on one side of the plate body, the weld overlay covering a portion of the top surface, a portion of the base region, and a portion of the raised region.

3. The grid plate of claim 2, wherein the overlay layer comprises a first overlay area overlying the top surface, a second overlay area overlying the base area, and a third overlay area overlying the raised area, the first overlay area being disposed on one side of the top surface, a side edge of the second overlay area being connected to the first overlay area, an opposite side edge of the second overlay area being connected to the third overlay area, a side edge of the third overlay area remote from the second overlay area being flush with the bottom surface.

4. The grid plate of claim 3 wherein the first landing area has a thickness of 15 to 20 mm and the second and third landing areas each have a thickness of 5 to 10 mm.

5. The grate plate of claim 2 wherein the weld overlay is a molybdenum chromium boron alloy.

6. The grid plate according to claim 1, wherein the maximum length of the perpendicular line from the bottom surface to the top surface is not less than twice the distance between the dividing line and the top surface.

7. A crusher comprising a grate plate according to any of claims 1 to 6 and a mounting frame to which the grate plate is fixed.

8. The crusher according to claim 7, wherein the mounting frame is provided with a plurality of first notch grooves and a plurality of second notch grooves, the first notch grooves are opposite to the second notch grooves, one end of the plate body is clamped into the first notch grooves, and the other end of the plate body is clamped into the second notch grooves.

9. The crusher of claim 7, further comprising a toothed roller and a plurality of crushing teeth, wherein the crushing teeth are arranged on the surface of the toothed roller, the toothed roller is arranged above the grid plate, the toothed roller drives the crushing teeth to rotate, and the overlaying layer and the raised areas are arranged in the pressing area of the crushing teeth.

10. A crusher as claimed in claim 9, characterised in that the surface of the crushing tooth is provided with a weld overlay region.