Integrated bridging type ore discharge grid plate, mill discharging mechanism and mill

Abstract

The utility model discloses an integrated bridging type ore discharge grid plate which comprises a grid plate bottom plate and one or more sections of lifting strips, the lifting strips are fixedly arranged on the grid plate bottom plate, and the lifting strips and the grid plate bottom plate are of an integrated structure. An inward concave part is arranged on the material lifting side of the ore discharge grid plate, an outward convex part is arranged on the non-material lifting side of the ore discharge grid plate, the concave part is matched with the convex part in shape and size, and the convex part can be correspondingly mounted in the concave part of the adjacent grid plate; the plurality of ore discharge grid plates are sequentially and adjacently bridged and aligned to form a whole circle of grid plates around the central axis of the end cover; the lifting strips on every two adjacent grid plates are sequentially aligned in an end-to-end mode to be spliced into one or more complete lifting strips. The utility model further discloses a mill discharge mechanism comprising the ore discharge grid plate and a mill.

Description

Technical Field

[0001] The utility model belongs to the technical field of large-scale mining mill liners, and relates to an integrated cross-connected discharge grid plate, a mill discharge mechanism and a mill. Background Art

[0002] The current grid plate design is in a fan-shaped structure, and there are at least two lifting strips on each grid plate. When assembled into a complete circle, the lifting strips are connected end to end to form a complete arc-shaped lifting strip. During installation, by machining corresponding bolt holes, the grid plate and the pulp lifter are fixed on the inner conical surface of the end cover using bolts. Therefore, multiple lifting strips and multiple bolt holes are required on the grid plate. To save space and maximize the grid hole area, these bolt holes are usually arranged on the lifting strips.

[0003] In the existing design, there are three bolt holes in the middle of the fan-shaped grid plate, which are located on two lifting strips along the radial direction of the mill and correspond to the radial through holes on the end cover. However, this design has defects: the bolt holes are distributed radially, resulting in uneven stress on the bolts and easy fracture. When the grid plate rotates inside the mill, the force is complex. When it rotates to the side without ore, it is mainly affected by the rotational force transmitted by the end cover, and when it rotates to the side in contact with the ore, it also has to bear the resistance of the ore movement. This continuously changing resistance causes uneven stress on the bolts and easy fracture.

[0004] Due to the radial distribution of the bolt holes, a single bolt often bears most of the force, rather than being evenly shared by multiple bolts, resulting in uneven force distribution on the bolts, shortened service life, increased maintenance costs and affecting the operating efficiency of the mill.

[0005] The root cause of this problem lies in the mismatch between the grid plate structure and the stress characteristics of the arc-shaped lifting strip. However, the grid plate structure is restricted in manufacturing and installation in two aspects: the radial distribution of the through holes on the end cover is conducive to processing efficiency and strength, and it is not realistic to change the position of the through holes; the mill requires a large number of grid plates of the same model to ensure batch processing and assembly efficiency. Therefore, the shape of the grid plate must be kept consistent. It is of great significance to optimize the grid plate structure to improve the bolt force distribution and prevent bolt fracture without changing the existing end cover structure and keeping the grid plate shape consistent.

[0006] In addition, the existing grid plate structure may cause materials to get stuck in the gaps between adjacent grid plates during the operation of the mill, which will further lead to the wear of the grid plates and the damage during the operation of the mill. Summary of the Utility Model

[0007] In order to solve the deficiencies existing in the prior art, the purpose of the present utility model is to provide an integrated cross-connected discharge grid plate. The discharge grid plate includes a grid plate bottom plate and one or more lifting strips. One or more of the lifting strips are fixedly arranged on the grid plate bottom plate and are of an integrated structure with the grid plate bottom plate; a concave portion is arranged inwardly on the material lifting side of the discharge grid plate, and a convex portion is arranged outwardly on the non-material lifting side of the discharge grid plate. The concave portion and the convex portion are matched in shape and size, and the convex portion can be correspondingly installed in the concave portion of an adjacent grid plate;

[0008] Multiple grid plates are adjacent and cross-connected and aligned in sequence to form a complete circle of grid plates around the central axis of the end cover; the lifting strips on two adjacent grid plates are aligned end to end in sequence to form one or more complete lifting strips.

[0009] In the actual application process, the number of lifting strips of the discharge grid plate needs to be matched with the corresponding structure (such as a material lifting hopper) on the end cover. Generally speaking, according to actual needs, the number of lifting strips on the discharge grid plate can be designed to be three sections, four sections, five sections or more; the ends of the lifting strips connected end to end between two adjacent discharge grid plates can also be designed as an interlocking structure to ensure that they will not loosen or break away during operation;

[0010] The shape of the concave portion or the convex portion is square, circular or other suitable and easy-to-process shapes, as long as the shapes between the concave portion and the convex portion can be aligned and matched;

[0011] In the specific implementation process, the number of the concave portion or the convex portion can be at least one, and multiple mutually matching concave portions and convex portions can also be set according to actual needs.

[0012] The lifting strips are arc-shaped, and multiple lifting strips are distributed obliquely at uniform or non-uniform intervals; the length of the lifting strip is 200-700 mm, the width is not less than 100-200 mm, and the height is not less than 100-300 mm; the distance between two adjacent lifting strips is 180-300 mm; the design of the lifting strip is based on the curvature of the inner conical surface of the mill end cover, so that it can closely adhere to the inner conical surface of the mill end cover to ensure that the lifting strip grabs and lifts the ore material to the maximum extent during rotation; the lifting strips on every two adjacent grid plates are jointly spliced into a complete arc-shaped lifting strip, and the splicing part can also adopt a mortise and tenon structure or bolt connection to ensure that it will not loosen or break away during the lifting process; the material of the lifting strip can be selected from high-strength wear-resistant steel or composite materials, and the surface is treated with wear resistance to improve the service life and wear resistance performance, so as to realize the efficient lifting and smooth movement of the ore material, avoid blockage, and improve the overall working efficiency of the mill.

[0013] In a specific embodiment, the lifting bars include a first lifting bar, a second lifting bar, a third lifting bar, and a fourth lifting bar;

[0014] The first lifting bar extends from the middle of the side of the discharge grid plate close to the central axis of the end cover to the 1 / 4 position on the material lifting side; the second lifting bar extends from the 1 / 4 position on the non-material lifting side to the first corner of the recess on the material lifting side; the third lifting bar extends from the first corner of the protrusion on the non-material lifting side to the second corner of the recess on the material lifting side; the fourth lifting bar extends from the second corner of the protrusion on the non-material lifting side to the middle of the side of the discharge grid plate far from the central axis of the end cover;

[0015] When the discharge grid plates form a complete circle, for four adjacent discharge grid plates, from left to right, the non-material lifting side of the fourth lifting bar corresponds to the material lifting side of the third lifting bar of the adjacent discharge grid plate on the right, the non-material lifting side of the third lifting bar corresponds to the material lifting side of the second lifting bar of the adjacent discharge grid plate on the right, and the non-material lifting side of the second lifting bar corresponds to the material lifting side of the first lifting bar of the adjacent discharge grid plate on the right.

[0016] One or more grid holes are vertically penetrated through the bottom plate of the grid plate, and the grid holes include discharge grid holes and / or gravel discharge grid holes; the shapes of the discharge grid holes and / or the gravel discharge grid holes include rectangular, square, circular and other shapes, and rounded corners can also be provided in the length direction of the grid holes;

[0017] Generally speaking, the discharge efficiency of the rectangular discharge grid holes and / or the gravel discharge grid holes is the highest, the discharge efficiency of the square discharge grid holes and / or the gravel discharge grid holes is the second, and the discharge efficiency of the circular discharge grid holes and / or the gravel discharge grid holes is the worst.

[0018] The size of the gravel discharge grid holes is larger than that of the discharge grid holes to facilitate the separation of ore materials of different sizes; the distance between the widths of two adjacent discharge grid holes is 18 - 45 mm, the distance between the widths of two adjacent gravel discharge grid holes is 45 - 80 mm; the spacing in the length direction between two adjacent discharge grid holes and / or gravel discharge grid holes is 40 - 60 mm.

[0019] In a preferred embodiment, the distance between the widths of two adjacent discharge grid holes is equal to the hole width of the discharge grid holes; and / or, the distance between the widths of two adjacent gravel discharge grid holes is equal to the hole width of the gravel discharge grid holes.

[0020] The discharge grid holes and / or the gravel discharge grid holes are arranged on the bottom plate of the grid plate between two adjacent lifting bars, and the gravel discharge grid holes are arranged at a position farther from the central axis of the end cover than the discharge grid holes.

[0021] In a specific embodiment, the discharge grid holes are arranged between the first lifting bar and the second lifting bar, and / or between the second lifting bar and the third lifting bar; the gravel discharge grid holes are arranged between the third lifting bar and the fourth lifting bar, and / or between the fourth lifting bar and the outer edge of the ore discharge grid plate.

[0022] The width of the discharge grid holes is 18 - 45 mm; the width of the gravel discharge grid holes is 45 - 80 mm; the discharge grid holes and / or the gravel discharge grid holes are wider at the top and narrower at the bottom, and the hole width of the discharge grid holes and / or the gravel discharge grid holes on the installation surface of the ore discharge grid plate is 6 - 14 mm, preferably 10 mm wider than the hole width of the discharge grid holes and / or the gravel discharge grid holes on the upper surface of the ore discharge grid plate.

[0023] In a specific embodiment, the hole width of the discharge grid holes on the installation surface is 40 mm, and the hole width of the discharge grid holes on the upper surface is 30 mm; the hole width of the gravel discharge grid holes on the installation surface is 60 mm, and the hole width of the gravel discharge grid holes on the upper surface is 50 mm.

[0024] The design and layout of the discharge grid holes and / or the gravel discharge grid holes are based on the specific working requirements of the mill to ensure that the ore can be smoothly discharged from the grid plate and improve the overall ore discharge efficiency.

[0025] On both sides of the bottom plate of the grid plate, there are bottom plate ribs protruding above the bottom surface. The cross-sectional dimension of the bottom plate ribs is 50×50 mm, and the length of the bottom plate ribs is equal to the length of the side edge of the ore discharge grid plate; and / or,

[0026] On one or both arc-shaped sides of the lifting bar, there are lifting bar ribs. The lifting bar ribs are integrally arranged on one or both arc-shaped sides of the lifting bar. The width of the lifting bar ribs is 40 - 70 mm, the height is 20 - 30 mm, and the length is the height of the lifting bar; and / or,

[0027] Between two adjacent grid holes in the length direction, there are grid hole ribs. The grid hole ribs are arranged along the position of the grid holes. Each grid hole rib between every two adjacent lifting bars is connected as a whole, and the two ends are respectively connected to the lifting bar ribs on one side or both sides; the height of the grid hole ribs is 30 - 50 mm, the width is equal to the distance between two adjacent grid holes in the length direction, which is 40 - 60 mm, and the length is the distance between two adjacent lifting bars, about 180 - 300 mm.

[0028] By providing the ribbed bars on the bottom plate of the discharge grid plate and / or the lifting bars, the strength and wear resistance of the overall structure of the discharge grid plate are significantly improved, thus ensuring the service life and stability of the discharge grid plate in a high-intensity working environment.

[0029] One or more bolt holes are provided on the lifting bars of the discharge grid plate, and the bolt holes correspond to the fixing holes on the end cover. The discharge grid plate is fixed to the end cover by bolts; the fixing holes on the end cover include multiple groups, and each group of the fixing holes is arranged in a straight line along the radial direction of the end cover. The bolt holes corresponding to the same straight line are arranged on two adjacent discharge grid plates.

[0030] In a specific embodiment, the bolt holes include a first bolt hole on the first lifting bar near the lifting side, a second bolt hole on the second lifting bar near the lifting side, and a third bolt hole on the fourth lifting bar near the non-lifting side.

[0031] The first bolt hole and the second bolt hole on one grid plate are arranged in a straight line with the third bolt hole on the grid plate adjacent to the material lifting side of this grid plate, and this straight line passes through the central axis of the mill end cover.

[0032] Bosses are provided on the lifting bars on the material lifting side and / or the non-material lifting side of the bolt holes, and the bosses ensure that the thickness from the bolt hole to the side of the lifting bar is not less than 50 - 70 mm.

[0033] In a specific embodiment, there are three fixing holes arranged in a straight line along the radial direction on the end cover. For the discharge grid plate, the two bolt holes near the radial center of the end cover are on the material lifting side of one discharge grid plate, and the bolt hole far from the radial center of the end cover is arranged on the non-material lifting side of the adjacent other discharge grid plate. More specifically, the bolt hole far from the radial center of the end cover is arranged on the fourth lifting bar of the protruding part on the non-material lifting side of the other discharge grid plate.

[0034] In a specific embodiment, handles for facilitating the handling of the discharge grid plate are further provided on the second lifting bar and the third lifting bar.

[0035] The present utility model also provides a mill discharge mechanism, which includes the above-mentioned discharge grid plate and a supporting material lifting hopper and end cover.

[0036] The present utility model also provides a mill, which includes the above-mentioned discharge grid plate or the above-mentioned mill discharge mechanism.

[0037] The mill discharge mechanism in the present utility model rotates in the clockwise direction during actual application.

[0038] The beneficial effects of the present utility model include: By optimizing the design of the lifting strips and bolt holes, the present utility model solves the problem of uneven stress on bolts in the prior art, significantly improves the operating efficiency and safety of the mill, extends the service life of the equipment, and reduces the maintenance cost. Specifically, the design of the discharge grid plate of the present utility model improves the stress uniformity. Through the optimized design of the lifting strips and bolt holes, it ensures that the bolts are stressed more evenly and reduces the risk of bolt fracture; enhances the structural stability: By setting the bosses and ribs, the structural strength of the grid plate and the lifting strips is enhanced; improves the mill efficiency: The optimized grid hole design ensures that the ore can pass through efficiently, improving the overall efficiency of the mill; extends the equipment life: By using wear-resistant materials and reasonable structural design, the service life of the grid plate and the lifting strips is extended, reducing the maintenance and replacement frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model 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 utility model. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0040] Figure 1 It is a front view and sectional view of a single-piece structure of the discharge grid plate of the present utility model.

[0041] Figure 2 It is a schematic diagram of a single-piece structure of the discharge grid plate of the present utility model.

[0042] Figure 3 It is a schematic diagram of a four-piece splicing structure of the discharge grid plate of the present utility model.

[0043] Figure 4 It is a schematic diagram of the discharge grid plate of the present utility model installed on the end cover.

[0044] Figure 5 It is an axonometric view schematic diagram of the discharge end of the present utility model.

[0045] Figure 6 It is a sectional view schematic diagram of the discharge at the discharge end of the present utility model.

[0046] In the figure, 1-grid plate bottom plate, 2-first lifting strip, 3-second lifting strip, 4-third lifting strip, 5-fourth lifting strip, 6-discharge grid hole, 7-gravel discharge grid hole, 8-bottom plate rib, 9-lifting strip rib, 10-grid hole rib, 11-boss, 12-first bolt hole, 13-second bolt hole, 14-third bolt hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0047] In combination with the following specific embodiments and drawings, the present utility model will be further described in detail. The processes, conditions, experimental methods, etc. for implementing the present utility model are all common knowledge and well-known common sense in the art except for the specifically mentioned content below, and the present utility model has no particularly restricted content.

[0048] The present utility model provides a bridging discharge grid plate. The discharge grid plate includes a grid plate bottom plate 1 and one or more lifting strips. One or more of the lifting strips are fixedly arranged on the grid plate bottom plate 1 and are of an integral structure with the grid plate bottom plate 1. An inward concave portion is provided on the material lifting side at the lower part of the discharge grid plate, and an outward convex portion is provided on the non-material lifting side at the lower part of the discharge grid plate. The shapes and sizes of the concave portion and the convex portion match, and the convex portion can be correspondingly installed in the concave portion of an adjacent grid plate. Multiple grid plates are adjacent to each other and are bridged and aligned in sequence to form a complete circle of grid plates around the central axis of the end cover. The lifting strips on every two adjacent grid plates are aligned end to end in sequence to form one or more complete lifting strips. The present utility model also provides a mill discharge mechanism and a mill including the discharge grid plate.

[0049] Embodiment 1

[0050] This embodiment provides an integrated bridging high-efficiency discharge grid plate for a semi-autogenous mill, aiming to optimize the ore discharge process and improve the service life of the equipment. The high-efficiency discharge grid plate of the semi-autogenous mill includes a grid plate bottom plate 1 and four arc-shaped lifting strips, as Figures 1 - 3 shown;

[0051] The four arc-shaped lifting strips include a first lifting strip 2, a second lifting strip 3, a third lifting strip 4, and a fourth lifting strip 5. The arc-shaped design of the lifting strips can lift the ore more effectively, ensuring that the ore is fully ground and discharged in the mill. The lifting strips are fixed on the grid plate bottom plate 1, and the ore is smoothly lifted to the discharge hole through its arc-shaped structure, effectively improving the ore discharge efficiency;

[0052] The length of the lifting strip is 400 mm, the width is 200 mm, and the height is 200 mm. The distance between two adjacent lifting strips is 200 mm.

[0053] As Figure 2 shown, the grid plate bottom plate 1 is provided with a discharge grid hole 6 and a gravel discharge grid hole 7 at the same time. The width dimension of the gravel discharge grid hole 7 is larger than that of the discharge grid hole 6. The gravel discharge grid hole 7 is used to discharge larger particles of ore, while the discharge grid hole 6 is used to discharge smaller particles of ore. The position of the gravel discharge grid hole 7 is farther from the central axis of the mill than that of the discharge grid hole 6. Small-particle ore in the mill is distributed in the lower layer due to centrifugal force and segregation. The gravel discharge grid hole 7 is arranged in this area, which is beneficial to quickly discharging the small-particle ore and avoiding the long-term retention of ore in the mill, thereby improving the ore discharge efficiency;

[0054] The width of the discharge grid hole 6 is 25 mm, and the width of the gravel discharge grid hole 7 is 60 mm; the hole width of the discharge grid hole 6 on the installation surface is 40 mm, and the hole width of the discharge grid hole 6 on the upper surface is 30 mm; the hole width of the gravel discharge grid hole 7 on the installation surface is 60 mm, and the hole width of the gravel discharge grid hole 7 on the upper surface is 50 mm.

[0055] Both the discharge grid hole 6 and the gravel discharge grid hole 7 are provided on the grid plate bottom plate 1. Since the service lives of the cylinder liner and the lifting hopper in the area where the gravel discharge grid hole 7 is located will be affected and decreased due to wear, the even distribution of the gravel discharge grid holes 7 in the circumferential direction of the mill is beneficial to evenly distributing the service lives of the cylinder liner and the lifting hopper and preventing excessive wear at a certain part.

[0056] Grid hole ribs 10 are provided between the length directions of the grid holes for protecting the grid plate bottom plate 1 and preventing the grid plate bottom plate 1 from deforming due to long-term stress. The height of the grid hole ribs 10 is 35 mm, and the width is 50 mm.

[0057] Bottom plate ribs 8 higher than the bottom surface are provided on both sides of the grid plate bottom plate 1 for protecting the edge of the grid plate bottom plate 1 and enhancing the overall structural strength. The cross-sectional dimension of the bottom plate ribs 8 is 50×50 mm, and the length of the bottom plate ribs 8 is equal to the length of the side edge of the ore discharge grid plate.

[0058] Lifting rib convex ribs 9 are provided on the inner arc surface of the lifting strip for protecting the lifting strip and preventing it from being excessively worn during the process of lifting ore; the width of the lifting rib convex ribs 9 is 40 mm, the height is 30 mm, and the length is the height of the lifting strip.

[0059] As Figure 4 shown, the ore discharge grid plate is used to be installed on the lifting hopper on the inner wall of the discharge end cover. When multiple ore discharge grid plates form a complete circle around the end cover central axis, the four arc-shaped lifting strips on the ore discharge grid plate can be aligned end to end in sequence to form multiple complete arc-shaped lifting strips with uniform intervals, ensuring the smooth lifting and discharging of ore and avoiding the accumulation and blockage of ore.

[0060] Three through holes for passing bolts and corresponding to the holes on the end cover are provided on the grid plate, namely the first bolt hole 12 on the first lifting strip 2 close to the lifting side, the second bolt hole 13 on the second lifting strip 3 close to the lifting side, and the third bolt hole 14 on the fourth lifting strip 5 close to the non-lifting side, for firmly fixing the ore discharge grid plate on the lifting hopper of the end cover.

[0061] Among them, the first bolt holes 12 and the second bolt holes 13 on one grid plate are arranged in a straight line with the third bolt holes 14 on the adjacent grid plate on the material lifting side of this grid plate, and this straight line passes through the central axis of the mill end cover.

[0062] Bosses 11 are provided on the material lifting side and non-material lifting side of the second bolt holes 13 and the non-material lifting side of the third bolt holes 14 to prevent the distance between the bolt holes and the arc surface from being too small, so that the thickness from the bolt holes to the side of the lifting strip is 70 mm.

[0063] Handles for facilitating the transportation and handling of the discharge grid plate are also provided on the second lifting strip and the third lifting strip.

[0064] Embodiment 2

[0065] This embodiment provides a mill discharge mechanism. The mill discharge mechanism includes a plurality of discharge grid plates that are adjacent to each other in sequence, straddle and align, and enclose a complete circle around the central axis of the end cover, as Figure 5 , 6 shown; the mill discharge mechanism also includes a matching material lifting hopper and end cover;

[0066] The discharge grid plate includes a grid plate bottom plate 1 and four lifting strips. The four lifting strips are fixedly arranged on the grid plate bottom plate 1; a concave portion is provided on the material lifting side of the discharge grid plate, and a convex portion is provided on the non-material lifting side of the discharge grid plate. The concave portion and the convex portion match in shape and size, and the convex portion can be correspondingly installed in the concave portion of the adjacent grid plate;

[0067] In this embodiment, the lifting strips are arc-shaped, and multiple lifting strips are evenly spaced and obliquely distributed; the lifting strips on every two adjacent grid plates are jointly spliced into a complete arc-shaped lifting strip.

[0068] One or more grid holes are provided on the grid plate bottom plate 1. The grid holes include discharge grid holes 6 and / or gravel discharge grid holes 7; the size of the gravel discharge grid holes 7 is larger than the size of the discharge grid holes 6; specifically, the discharge grid holes 6 and / or the gravel discharge grid holes 7 are provided on the grid plate bottom plate 1 between two adjacent lifting strips, and the setting position of the gravel discharge grid holes 7 is farther from the central axis of the end cover than that of the discharge grid holes 6.

[0069] Raised bottom ribs 8 higher than the bottom surface are provided on both sides of the grid plate bottom plate 1;

[0070] Raised lifting strip ribs 9 are provided on one side or both sides of the arc surface of the lifting strip. The raised lifting strip ribs 9 are integrally provided on one side or both sides of the arc surface of the lifting strip;

[0071] There is a grid hole rib 10 between two adjacent grid holes in the length direction. The grid hole ribs 10 are arranged along the positions of the grid holes. Each grid hole rib 10 between every two adjacent lifting strips is connected as a whole, and the two ends are respectively connected to the lifting strip ribs 9 on one side or both sides.

[0072] The bottom plate rib 8, the lifting strip rib 9, and the grid hole rib 10 significantly improve the strength and wear resistance of the overall structure of the entire discharge grid plate, thereby ensuring the service life and stability of the grid plate in a high-intensity working environment.

[0073] There are three bolt holes provided on the lifting strip of the discharge grid plate. The bolt holes correspond to the fixing holes on the end cover, and the discharge grid plate is fixed to the end cover through bolts; the fixing holes on the end cover include multiple groups, and each group of the fixing holes is arranged in a straight line along the radial direction of the end cover. The bolt holes corresponding to the same straight line are respectively arranged on two adjacent discharge grid plates.

[0074] In this embodiment, two bolt holes close to the radial center of the end cover are on the material lifting side of one of the discharge grid plates, and the bolt hole far from the radial center of the end cover is arranged on the lifting strip of the protruding part on the non-material lifting side of the other discharge grid plate. The bolt holes on two adjacent discharge grid plates are jointly arranged in a straight line pointing to the central axis.

[0075] On the lifting strip on the material lifting side and / or non-material lifting side of the bolt hole, a boss 11 is further provided to prevent the distance between the bolt hole and the arc surface from being too small.

[0076] The mill discharge mechanism further includes a material lifting hopper and an end cover that match the discharge grid plate.

[0077] Embodiment 3

[0078] This embodiment provides a mill, which includes multiple discharge grid plates that are sequentially adjacent, cross-connected and aligned, and enclose a complete circle around the central axis of the end cover; the mill further includes a mill discharge mechanism with a supporting material lifting hopper and an end cover.

[0079] The discharge grid plate includes a grid plate bottom plate 1 and four arc-shaped lifting strips. The four lifting strips are fixedly arranged on the grid plate bottom plate 1; a concave part is provided on the material lifting side of the discharge grid plate, and a convex part is provided on the non-material lifting side of the discharge grid plate. The convex part can be correspondingly installed in the concave part of the adjacent grid plate; the lifting strips on every two adjacent grid plates are jointly spliced into a complete arc-shaped lifting strip.

[0080] A plurality of grid holes are provided on the grid plate bottom plate 1. The grid holes include discharge grid holes 6 and / or gravel discharge grid holes 7; the size of the gravel discharge grid holes 7 is larger than the size of the discharge grid holes 6.

[0081] On both sides of the bottom plate of the grid plate 1, there are bottom plate ribs 8 that are higher than the bottom surface;

[0082] On one or both arc-shaped sides of the lifting strip, there are lifting strip ribs 9, and the lifting strip ribs 9 are integrally arranged on one or both arc-shaped sides of the lifting strip;

[0083] The bottom plate ribs 8 and the lifting strip ribs 9 significantly improve the strength and wear resistance of the overall structure of the entire discharge grid plate, thereby ensuring the service life and stability of the grid plate in a high-intensity working environment.

[0084] There are three bolt holes on the lifting strip of the discharge grid plate. The bolt holes correspond to the fixing holes on the end cover. The two bolt holes close to the radial center of the end cover are on the material lifting side of one discharge grid plate, and the bolt hole far from the radial center of the end cover is arranged on the lifting strip of the protruding part on the non-material lifting side of the other discharge grid plate. The bolt holes on two adjacent discharge grid plates are jointly arranged in a straight line pointing to the central axis.

[0085] On the lifting strip on the material lifting side and / or the non-material lifting side of the bolt hole, a boss 11 is also provided to prevent the distance between the bolt hole and the arc surface from being too small.

[0086] In addition to the above-mentioned discharge grid plate, the mill also includes a mill discharge mechanism composed of a matching material lifting hopper, end cover, etc., and other mill supporting structures such as cylinder liners, drive mechanisms, etc.

[0087] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "left", "right", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0088] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0089] In the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include that the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0090] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0091] The protection scope of the present utility model is not limited to the above embodiments. Without departing from the spirit and scope of the concept of the present utility model, the changes and advantages that can be conceived by those skilled in the art are included in the present utility model, and the scope of protection is defined by the appended claims.

Claims

1. An integrated cross-connected discharge lattice plate, characterized in that, The discharge grid plate includes a grid plate bottom plate (1) and one or more lifting strips, and the lifting strips are fixedly arranged on the grid plate bottom plate (1) and are of an integral structure with the grid plate bottom plate (1); An inward recess is provided on the material lifting side of the discharge grid plate, and an outward protrusion is provided on the non-material lifting side of the discharge grid plate. The shapes and sizes of the recess and the protrusion match, and the protrusion can be correspondingly installed in the recess of the adjacent grid plate; Multiple discharge grid plates are adjacent to each other in sequence and are aligned in a spanning manner to form a complete circle of grid plates around the central axis of the end cover; the lifting strips on every two adjacent grid plates are aligned end to end in sequence to form one or more complete lifting strips; One or more grid holes are vertically penetrated through the grid plate bottom plate (1); convex ribs (8) higher than the bottom surface are provided on both sides of the grid plate bottom plate (1), convex ribs (9) are provided on one or both arc surfaces of the lifting strip, and convex ribs (10) are provided between two adjacent grid holes in the length direction.

2. The discharge grate plate according to claim 1, characterized in that, The lifting strip is arc-shaped, and multiple lifting strips are distributed obliquely at intervals; the length of the lifting strip is 200 - 700 mm, the width is not less than 100 - 200 mm, and the height is not less than 100 - 300 mm; the distance between two adjacent lifting strips is 180 - 300 mm; The lifting strips on every two adjacent grid plates are jointly spliced into a complete arc-shaped lifting strip.

3. The discharge grid plate according to claim 1, characterized in that, The lifting strip includes a first lifting strip (2), a second lifting strip (3), a third lifting strip (4), and a fourth lifting strip (5); The first lifting strip (2) extends from the middle of the side of the discharge grid plate close to the central axis of the end cover to the 1 / 4 position of the material lifting side; the second lifting strip (3) extends from the 1 / 4 position of the non-material lifting side to the first corner on the material lifting side; the third lifting strip (4) extends from the first corner on the non-material lifting side to the second corner on the material lifting side; the fourth lifting strip (5) extends from the second corner on the non-material lifting side to the middle of the side of the discharge grid plate away from the central axis of the end cover; When the discharge grid plates form a complete circle, for every four adjacent discharge grid plates, from left to right, the non-material lifting side of the fourth lifting strip (5) corresponds to the material lifting side of the third lifting strip (4), the non-material lifting side of the third lifting strip (4) corresponds to the material lifting side of the second lifting strip (3), and the non-material lifting side of the second lifting strip (3) corresponds to the material lifting side of the first lifting strip (2).

4. The discharge grid plate according to claim 1, wherein, The grid holes include discharge grid holes (6) and / or gravel discharge grid holes (7); the shapes of the discharge grid holes (6) and / or the gravel discharge grid holes (7) include rectangle, square, and circle; the size of the gravel discharge grid holes (7) is larger than that of the discharge grid holes (6); the distance between two adjacent discharge grid holes (6) in the width direction is 18 - 45 mm, and the distance between two adjacent gravel discharge grid holes (7) in the width direction is 45 - 80 mm; the distance between two adjacent discharge grid holes (6) and / or gravel discharge grid holes (7) in the length direction is 40 - 60 mm; and / or, The width of the discharge grid holes (6) is 18 - 45 mm; the width of the gravel discharge grid holes (7) is 45 - 80 mm; the discharge grid holes (6) and / or the gravel discharge grid holes (7) are wider at the bottom than at the top, and the hole width of the discharge grid holes (6) and / or the gravel discharge grid holes (7) on the installation surface of the ore discharge grid plate is 6 - 14 mm wider than the hole width of the discharge grid holes (6) and / or the gravel discharge grid holes (7) on the upper surface of the ore discharge grid plate.

5. The discharge grid plate according to claim 4, characterized in that, The distance between the widths of two adjacent discharge grid holes (6) is equal to the hole width of the discharge grid holes (6); and / or, the distance between the widths of two adjacent gravel discharge grid holes (7) is equal to the hole width of the gravel discharge grid holes (7); and / or, The discharge grid holes (6) and / or the gravel discharge grid holes (7) are arranged on the grid plate bottom plate (1) between two adjacent lifting strips, and the gravel discharge grid holes (7) are set farther from the end cover central axis than the discharge grid holes (6); and / or, The discharge grid holes (6) are arranged between the first lifting strip (2) and the second lifting strip (3), and / or, between the second lifting strip (3) and the third lifting strip (4); the gravel discharge grid holes (7) are arranged between the third lifting strip (4) and the fourth lifting strip (5), and / or, between the fourth lifting strip (5) and the outer edge of the ore discharge grid plate.

6. The discharge grid plate according to claim 1, characterized in that, The cross-sectional dimension of the bottom plate rib (8) is 50×50 mm, and the length of the bottom plate rib (8) is equal to the length of the side edge of the ore discharge grid plate; and / or, The lifting strip rib (9) is integrally arranged on one or both arc surfaces of the lifting strip, the width of the lifting strip rib (9) is 40 - 70 mm, the height is 20 - 30 mm, and the length is the height of the lifting strip; and / or, The grid hole rib (10) is arranged along the position of the grid hole, and each grid hole rib (10) between every two adjacent lifting strips is connected as a whole, and the two ends are respectively connected to the lifting strip rib (9) on one side or both sides; the height of the grid hole rib (10) is 30 - 50 mm, the width is 40 - 60 mm, and the length is the distance between two adjacent lifting strips.

7. The discharge grate plate according to claim 1, characterized in that One or more bolt holes are arranged on the lifting strips of the ore discharge grid plate, and the bolt holes correspond to the fixing holes on the end cover, and the ore discharge grid plate is fixed on the end cover through bolts; the fixing holes on the end cover include multiple groups, and each group of fixing holes is arranged in a straight line along the radial direction of the end cover, and the bolt holes corresponding to the same straight line are arranged on two adjacent ore discharge grid plates; A boss (11) is arranged on the lifting strip on the material lifting side and / or the non - material lifting side of the bolt hole, and the boss (11) ensures that the thickness from the bolt hole to the side edge of the lifting strip is not less than 50 - 70 mm.

8. The discharge grid plate according to claim 7, characterized in that, The bolt holes include the first bolt hole (12) on the first lifting strip (2) close to the lifting side, the second bolt hole (13) on the second lifting strip (3) close to the lifting side, and the third bolt hole (14) on the fourth lifting strip (5) close to the non - lifting side; The first bolt hole (12) and the second bolt hole (13) on a grid plate are arranged in a straight line with the third bolt hole (14) on the adjacent grid plate on the material lifting side of this grid plate, and this straight line passes through the central axis of the mill end cover.

9. A mill discharge mechanism, characterized in that, The mill discharging mechanism includes the discharging grid plate as described in any one of claims 1-8, and the supporting material lifting hopper and end cover.

10. A mill, characterized in that, The mill includes the discharging grid plate as described in any one of claims 1-8, or the mill discharging mechanism as described in claim 9.

Images