A grinding device and process for cement processing

Abstract

The present invention belongs to the technical field of cement production and processing equipment, and specifically relates to a grinding device for cement processing and a process thereof, wherein the device comprises a base, a drum, a driving mechanism, and a liner assembly; the liner assembly comprises a liner body, a liner base, and bolts; the bolts in the present invention are installed from the outside to the inside, and the bolt heads are located outside the drum, so that when the liner is removed, the entire bolt can be driven to rotate by the bolt head, thereby loosening the bolt to facilitate subsequent removal; the liner body cooperates with the bolt through a threaded blind hole, which can prevent the bolt from being exposed in the drum, thereby avoiding wear on the bolt; in addition, the present invention utilizes the liner base to limit the bolt, and through the rotation of the bolt, the liner body and the inner wall of the drum can be brought close to or away from each other, further facilitating the removal of the liner body.

Description

Technical Field

[0001] The invention belongs to the technical field of cement production and processing equipment, and in particular relates to a grinding device and a process thereof for cement processing. Background Art

[0002] The ball mill is a commonly used cement processing equipment that can grind raw materials and clinker. The principle is to load the material and grinding media into the drum. As the drum rotates, the grinding media and the inner wall of the drum squeeze and crush the material, thereby grinding the material. In order to prevent the grinding media and materials from wearing the inner wall of the drum, a liner is also laid on the inner wall of the drum. The liner is a sacrificial material and needs to be replaced after long-term use. The liner is generally connected to the inner wall of the roller by bolts. The common connection method is to open a through hole on the liner, then pass the bolt through the liner and the drum from the inside to the outside, and then install the nut on the outer end of the bolt. The defect of this installation method is that the inner end of the bolt is exposed in the roller, and wear will occur after long-term use. Therefore, it is impossible to disassemble the bolt from the inside of the drum. Therefore, the prior art generally removes the nut on the outer end of the bolt first, and then manually knocks the bolt inward to make the bolt fall off inward. However, after the ball mill is used for a long time, due to problems such as material compaction and bolt corrosion, the bolt will be seriously adhered to the drum, resulting in huge labor intensity for the operator and extremely low efficiency of liner replacement. In addition, some linings are made of solid metal materials and are heavy. After the linings are installed, the gaps between the linings are small, and the inner surfaces of the linings are generally smooth structures, lacking effective fulcrums, making it difficult to separate the linings from the inner wall of the drum. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a grinding device for cement processing and a process thereof which is convenient for replacing the liner.

[0004] To achieve the above-mentioned and other related purposes, the present invention provides a grinding device for cement processing, comprising:

[0005] Pedestal;

[0006] The drum is rotatably arranged on the base through a bearing seat, and one end of the drum is provided with a feed port, and the other end is provided with a discharge port;

[0007] A driving mechanism, connected to the roller for driving the roller to rotate;

[0008] A lining plate assembly, wherein a plurality of lining plate assemblies are arranged in an array on the inner wall of the drum and completely cover the inner wall of the drum;

[0009] The liner assembly comprises a liner body, a liner base and a bolt, wherein the liner body and the liner base are mounted on the inner wall of the drum, wherein the liner base is located between the liner body and the inner wall of the drum, a threaded blind hole is provided on one side of the liner body facing the inner wall of the drum, a bolt head is provided on the first end of the bolt, an external thread is provided on the second end of the bolt, the second end of the bolt passes through the drum and the liner base in sequence, and is screwed with the threaded blind hole, and the bolt head is exposed on the outer wall of the drum;

[0010] A limiting mechanism is provided between the lining base and the bolt, and the limiting mechanism is configured to prevent the bolt from moving toward the outside of the drum relative to the lining base, so that the lining body can be lifted toward the inside of the drum when the bolt rotates.

[0011] In an optional embodiment of the present invention, an annular groove is provided on the circumferential surface of the bolt, the limiting mechanism includes a limiting plate, a first through hole is provided on the limiting plate for the bolt to pass through, the first through hole includes a first hole area and a second hole area, the width of the first hole area is smaller than the diameter of the circumferential surface of the bolt and larger than the groove bottom diameter of the annular groove; the width of the second hole area is larger than the diameter of the circumferential surface of the bolt, and the limiting plate is movably connected to the liner base in a direction perpendicular to the axis of the bolt, so that the limiting plate can switch between the following two positions:

[0012] At station one, the projection of at least part of the edge of the first hole area in the axial direction of the bolt is located within the projection area of ​​the annular groove in the axial direction of the bolt; and

[0013] At workstation two, the projection of the second hole area in the axial direction of the bolt completely covers the first projection of the bolt, where the first projection refers to the projection of the portion of the bolt excluding the bolt head in the direction of the bolt axis.

[0014] In an optional embodiment of the present invention, a concave cavity is provided on one side of the lining body facing the inner wall of the drum, and the lining base is accommodated in the concave cavity.

[0015] In an optional embodiment of the present invention, a first elastic element is provided between the limit plate and the lining base, and the first elastic element is assembled so that its elastic force can drive the limit plate to move from the work station one to the work station two; when the limit plate is located at the work station one, the limit plate is completely retracted inside the lining base, and when the limit plate is located at the work station two, the limit plate is protruded from one of the side walls of the lining base.

[0016] In an optional embodiment of the present invention, a holding mechanism is further provided between the limit plate and the liner base, and the holding mechanism has a holding position and a releasing position. When the holding mechanism is located at the holding position, the limit plate located at the first position can be held at the first position, and when the holding mechanism is located at the releasing position, the restriction on the limit plate can be released so that the limit plate can move freely. The holding mechanism is assembled to enable the holding mechanism to switch to the holding position when the liner body is separated from the liner base and the limit plate is located at the first position, and to switch to the releasing position when the liner body and the liner base are closed.

[0017] In an optional embodiment of the present invention, the retaining mechanism includes a second through hole provided on the limit plate, and a pin rod movably connected to the liner base in a direction parallel to the axial direction of the bolt, the pin rod includes a flat shaft section, and a cylindrical section is provided at one end of the flat shaft section away from the axis of the roller; the second through hole includes a third hole area and a fourth hole area, the width of the third hole area is smaller than the diameter of the cylindrical section and larger than the width of the flat shaft section, and the width of the fourth hole area is larger than the diameter of the cylindrical section; a second elastic element is provided between the pin rod and the liner base, and the second elastic element is configured so that its elastic force can drive the pin rod to move in a direction close to the axis of the roller; when the limit plate is located at the station one and the liner body is separated from the liner base, the cylindrical section of the pin rod is located in the fourth hole area to prevent the limit plate from moving toward the station two, and when the liner body and the liner base are closed, the flat shaft section of the pin rod is located in the second through hole to enable the limit plate to move freely.

[0018] In an optional embodiment of the present invention, a recessed portion is provided on the side wall of the liner base, and when the limit plate is located at the work station 1, one end of the limit plate is flush with the recessed portion.

[0019] In an optional embodiment of the present invention, a groove is provided on the end surface of the lining body which is perpendicular to the axis of the drum, and the side surface of the lining body which is parallel to the axis of the drum is parallel to the axis of the bolt.

[0020] In an optional embodiment of the present invention, in the axial direction of the drum, the lining bases of each two adjacent lining assemblies are connected as one body.

[0021] To achieve the above-mentioned purpose and other related purposes, the present invention also provides a grinding process for cement processing, and the grinding device for cement processing is used to grind raw materials or clinker.

[0022] The technical effect of the present invention is that the bolts in the present invention are installed from the outside to the inside, and the bolt heads are located outside the drum. When the liner is removed, the entire bolt can be driven to rotate by the bolt heads, thereby loosening the bolts and facilitating subsequent removal. The liner body cooperates with the bolts through threaded blind holes, which can prevent the bolts from being exposed in the drum, thereby avoiding wear on the bolts. In addition, the present invention uses a liner base to limit the bolts, and through the rotation of the bolts, the liner body can be brought closer to or farther from the inner wall of the drum, further facilitating the removal of the liner body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view of a grinding device for cement processing provided by an embodiment of the present invention;

[0024] Figure 2 It is a schematic diagram of the local structure of the drum wall provided by an embodiment of the present invention;

[0025] Figure 3 is an exploded view of a liner assembly provided by an embodiment of the present invention;

[0026] Figure 4 is a partial axial view of a drum wall provided by an embodiment of the present invention;

[0027] Figure 5 yes Figure 4 AA section view;

[0028] Figure 6 yes Figure 5 BB cross-sectional view;

[0029] Figure 7 yes Figure 5 A cross-sectional view of the region shown in another state;

[0030] Figure 8 yes Figure 7 CC section view;

[0031] Fig. 9 yes Figure 7 DD cross-sectional view;

[0032] Fig.10 yes Figure 5 A cross-sectional view of the region in another state;

[0033] Fig.11 yes Fig.10 EE cross-sectional view;

[0034] Fig.12 yes Fig.10 FF cross-sectional view;

[0035] Explanation of the reference numerals in the accompanying drawings: 10, base; 11, bearing seat; 20, roller; 21, feed port; 22, discharge port; 30, driving mechanism; 40, liner assembly; 41, liner body; 411, threaded blind hole; 412, groove; 413, cavity; 42, liner base; 421, recessed portion; 43, bolt; 431, bolt head; 432, annular groove; 44, limit plate; 441, first through hole; 442, second through hole; 45, first elastic element; 46, pin rod; 461, flat shaft section; 462, cylindrical section; 47, second elastic element. DETAILED DESCRIPTION

[0036] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0037] It should be noted that the illustrations provided in the following embodiments are only used to illustrate the basic concept of the present invention in a schematic manner, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0038] See also Figure 1-Figure 12As shown, the grinding device for cement processing provided by the embodiment of the present invention includes a base 10, a drum 20, a driving mechanism 30 and a liner assembly 40; the drum 20 is rotatably arranged on the base 10 through a bearing seat 11, one end of the drum 20 is provided with a feed port 21, and the other end is provided with a discharge port 22; the driving mechanism 30 is transmission-connected with the drum 20 for driving the drum 20 to rotate; a plurality of liner assemblies 40 are arranged in an array on the inner wall of the drum 20 and completely cover the inner wall of the drum 20; the liner assembly 40 includes a liner body 41, a liner base 42 and bolts 43, the liner body 41 and the liner base 42 are installed on the inner wall of the drum 20, wherein the liner base 42 is located on the liner body A threaded blind hole 411 is provided on the side of the lining body 41 facing the inner wall of the drum 20, a bolt head 431 is provided on the first end of the bolt 43, an external thread is provided on the second end of the bolt 43, the second end of the bolt 43 passes through the drum 20 and the lining base 42 in sequence, and is screwed with the threaded blind hole 411, and the bolt head 431 is exposed on the outer wall of the drum 20; a limiting mechanism is provided between the lining base 42 and the bolt 43, and the limiting mechanism is assembled to prevent the bolt 43 from moving toward the outside of the drum 20 relative to the lining base 42, so that the lining body 41 can be lifted toward the inside of the drum 20 when the bolt 43 rotates.

[0039] The bolt 43 in the present invention is installed from the outside to the inside, and the bolt head 431 is located outside the drum 20. When the liner is removed, the entire bolt 43 can be driven to rotate by the bolt head 431, thereby loosening the bolt 43 to facilitate subsequent removal; the liner body 41 cooperates with the bolt 43 through the threaded blind hole 411, which can prevent the bolt 43 from being exposed in the drum 20, thereby avoiding wear on the bolt 43; in addition, the present invention uses the liner base 42 to limit the bolt 43, and through the rotation of the bolt 43, the liner body 41 can be brought closer to or farther away from the inner wall of the drum 20, further facilitating the disassembly of the liner body 41.

[0040] See also Figure 3-Figure 12As shown, in an optional embodiment of the present invention, an annular groove 432 is provided on the circumferential surface of the bolt 43, the limiting mechanism includes a limiting plate 44, and a first through hole 441 is provided on the limiting plate 44 for the bolt 43 to pass through, the first through hole 441 includes a first hole area and a second hole area, the width of the first hole area is smaller than the diameter of the circumferential surface of the bolt 43 and larger than the groove bottom diameter of the annular groove 432; the width of the second hole area is larger than the diameter of the circumferential surface of the bolt 43, and the limiting plate 44 is movably connected to the liner base 42 along a direction perpendicular to the axis of the bolt 43, so that the limiting plate 44 can switch between the following two stations: station one, at least part of the edge of the first hole area is projected in the axial direction of the bolt 43 within the projection area of ​​the annular groove 432 in the axial direction of the bolt 43; and station two, the projection of the second hole area in the axial direction of the bolt 43 completely covers the first projection of the bolt 43, and the first projection refers to the projection of the part of the bolt 43 other than the bolt head 431 in the axial direction of the bolt 43.

[0041] It should be understood that when the limit plate 44 is located at station one, the rotating bolt 43 can lift the liner body 41 to facilitate disassembly of the liner body 41. When the limit plate 44 is located at station two, the bolt 43 can be easily separated from the liner base 42.

[0042] See also Figure 4 As shown, in an optional embodiment of the present invention, a concave cavity 413 is provided on one side of the liner body 41 facing the inner wall of the drum 20, and the liner base 42 is received in the concave cavity 413. It should be understood that the concave cavity 413 can protect the components on the liner base 42 to prevent dust from corroding the components, and on the other hand, the liner body 41 can also be limited with the liner base 42 through the concave cavity 413 to improve the installation accuracy.

[0043] See also Figure 3-Figure 12 As shown, in an optional embodiment of the present invention, a first elastic element 45 is provided between the limit plate 44 and the liner base 42, and the first elastic element 45 is configured so that its elastic force can drive the limit plate 44 to move from the station 1 to the station 2; when the limit plate 44 is located at the station 1, the limit plate 44 is completely retracted inside the liner base 42, and when the limit plate 44 is located at the station 2, the limit plate 44 protrudes from one of the side walls of the liner base 42. The role of this structure will be explained in the subsequent description of the overall working principle.

[0044] See also Figure 3-Figure 12As shown, in an optional embodiment of the present invention, a holding mechanism is further provided between the limit plate 44 and the liner base 42, and the holding mechanism has a holding position and a releasing position. When the holding mechanism is located at the holding position, the limit plate 44 located at the station one can be held at the station one, and when the holding mechanism is located at the releasing position, the restriction on the limit plate 44 can be released so that the limit plate 44 can move freely. The holding mechanism is assembled to switch to the holding position when the liner body 41 is separated from the liner base 42 and the limit plate 44 is located at the station one, and to switch to the releasing position when the liner body 41 and the liner base 42 are closed.

[0045] See also Figure 3-Figure 12 As shown, in an optional embodiment of the present invention, the retaining mechanism includes a second through hole 442 provided on the limiting plate 44, and a pin rod 46 movably connected to the liner base 42 along a direction parallel to the axial direction of the bolt 43, the pin rod 46 includes a flat shaft section 461, and a cylindrical section 462 is provided at one end of the flat shaft section 461 away from the axis of the roller 20; the second through hole 442 includes a third hole area and a fourth hole area, the width of the third hole area is smaller than the diameter of the cylindrical section 462 and larger than the width of the flat shaft section 461, and the width of the fourth hole area is larger than the diameter of the cylindrical section 462; the pin rod 4 A second elastic element 47 is provided between the liner 41 and the liner base 42, and the second elastic element 47 is configured so that its elastic force can drive the pin 46 to move in the direction close to the axis of the roller 20; when the limit plate 44 is located at the station 1 and the liner body 41 is separated from the liner base 42, the cylindrical section 462 of the pin 46 is located in the fourth hole area to prevent the limit plate 44 from moving to the station 2, and when the liner body 41 and the liner base 42 are closed, the flat shaft section 461 of the pin 46 is located in the second through hole 442 to allow the limit plate 44 to move freely. The role of the holding mechanism will be explained in the subsequent description of the overall working principle.

[0046] See also Figure 3 , Fig. 9 As shown, in an optional embodiment of the present invention, a recessed portion 421 is provided on the side wall of the liner base 42, and when the limit plate 44 is located at the workstation 1, one end of the limit plate 44 is flush with the recessed portion 421. The function of the recessed portion 421 will be explained in the subsequent description of the overall working principle.

[0047] See also Figure 3 , Figure 4As shown, in an optional embodiment of the present invention, a groove 412 is provided on the end surface of the lining body 41 which is perpendicular to the axis of the drum 20, and the side surface of the lining body 41 which is parallel to the axis of the drum 20 is parallel to the axis of the bolt 43. It should be understood that the groove 412 can provide a force-carrying portion for the lining body 41, making it convenient to disassemble the lining body 41; the side surface of the lining body 41 which is parallel to the axis of the drum 20 is parallel to the axis of the bolt 43, so that the lining body 41 can be prevented from interfering with the adjacent lining body 41 during the disassembly process.

[0048] See also Figure 3 In an optional embodiment of the present invention, the liner bases 42 of each two adjacent liner assemblies 40 are connected as one body in the axial direction of the drum 20. It should be understood that two bolts 43 can be provided on one liner base 42, thereby preventing the liner base 42 from deflecting.

[0049] The following combination Figure 5-Figure 12 , the installation and removal process of the liner assembly 40 is described in detail:

[0050] See also Figure 5 , Figure 6 As shown, when installing the liner assembly 40, first place the liner base 42 on the inner wall of the drum 20, and pass the bolts 43 through the drum 20 and the liner base 42 in sequence, and then press the limit plate 44 to the first position by hand, that is, Figure 6 At this time, the pin 46 will pop up, so that the cylindrical section 462 is stuck in the fourth hole area, and then the limit plate 44 is kept in the first position. At this time, the bolt 43 is blocked by the limit plate 44 and can no longer be pulled out. Then, the liner body 41 is placed on the liner base 42, and the bolt 43 is rotated. As the bolt 43 rotates, the liner body 41 and the liner base 42 are gradually closed. Figure 7 , Figure 8 , Fig. 9 As shown, after the two are completely closed, the liner assembly 40 is installed. At this time, the pin rod 46 moves downward due to the squeezing of the liner body 41, so that the cylindrical section 462 is separated from the second through hole 442. At this time, the retaining mechanism is in the release position; since a recessed portion 421 is provided on the side wall of the liner base 42, even if the liner base 42 is covered by the liner body 41, the limit plate 44 can still pop outward for a certain distance and then abut against the inner wall of the cavity 413, which can keep the retaining mechanism always in the release position; it should be noted that at this time, the first hole area of ​​the first through hole 441 is still located in the annular groove 432 of the bolt 43, that is, the limit plate 44 is still in position one; when the liner assembly 40 needs to be disassembled, as shown in FIG. Fig.10 , Fig.11 , Fig.12As shown, the bolt 43 is rotated first. At this time, since the bolt 43 is blocked by the limit plate 44, it will basically remain in place, and the lining body 41 will be lifted up by the bolt 43. As the lining body 41 and the lining base 42 gradually move away from each other, the side wall of the lining base 42 is gradually exposed. At this time, the limit plate 44 will pop up under the action of the first elastic element 45, so that the limit plate 44 switches to the second station. At this time, the bolt 43 can be pulled out from the lining base 42. At the same time, the pop-up limit plate 44 can support the lining body 41 to prevent the lining body 41 from closing with the lining base 42 again under the action of gravity. At this time, there is a certain drop between the lining body 41 and the adjacent lining body 41, so that the groove 412 at the end of the lining body 41 is exposed, and the operator can hook the groove 412 with tools such as hooks to achieve the disassembly of the lining body 41.

[0051] The present invention also provides a grinding process for cement processing, and the grinding device for cement processing is used to grind raw materials or clinker.

[0052] To summarize, the bolt 43 in the present invention is installed from the outside to the inside, and the bolt head 431 is located outside the drum 20. When the liner is removed, the entire bolt 43 can be driven to rotate by the bolt head 431, thereby loosening the bolt 43 to facilitate subsequent removal; the liner body 41 cooperates with the bolt 43 through the threaded blind hole 411, which can prevent the bolt 43 from being exposed in the drum 20, thereby avoiding wear on the bolt 43; in addition, the present invention uses the liner base 42 to limit the bolt 43, and through the rotation of the bolt 43, the liner body 41 can be brought closer to or farther from the inner wall of the drum 20, further facilitating the disassembly of the liner body 41.

[0053] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

[0054] In the description herein, many specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of the specific details or with other devices, systems, components, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

Claims

1. A grinding device for cement processing, characterized in that: include: Base (10); A roller (20) is rotatably mounted on the base (10) via a bearing seat (11); one end of the roller (20) is provided with a feed port (21), and the other end of the roller (20) is provided with a discharge port (22); A driving mechanism (30) is drivingly connected to the roller (20) and is used to drive the roller (20) to rotate; A lining plate assembly (40), wherein a plurality of lining plate assemblies (40) are arranged in an array on the inner wall of the drum (20) and completely cover the inner wall of the drum (20); The liner assembly (40) comprises a liner body (41), a liner base (42) and a bolt (43); the liner body (41) and the liner base (42) are mounted on the inner wall of the drum (20); the liner base (42) is located between the liner body (41) and the inner wall of the drum (20); a threaded blind hole (411) is provided on one side of the liner body (41) facing the inner wall of the drum (20); a bolt head (431) is provided at a first end of the bolt (43); an external thread is provided at a second end of the bolt (43); the second end of the bolt (43) passes through the drum (20) and the liner base (42) in sequence and is screwed to the threaded blind hole (411); the bolt head (431) is exposed on the outer wall of the drum (20); A limiting mechanism is provided between the lining base (42) and the bolt (43), and the limiting mechanism is configured to prevent the bolt (43) from moving toward the outside of the drum (20) relative to the lining base (42), so that the lining body (41) can be lifted toward the inside of the drum (20) when the bolt (43) rotates; An annular groove (432) is provided on the circumferential surface of the bolt (43); the limiting mechanism comprises a limiting plate (44); a first through hole (441) is provided on the limiting plate (44) for the bolt (43) to pass through; the first through hole (441) comprises a first hole area and a second hole area; the width of the first hole area is smaller than the diameter of the circumferential surface of the bolt (43) and larger than the groove bottom diameter of the annular groove (432); the width of the second hole area is larger than the diameter of the circumferential surface of the bolt (43); the limiting plate (44) is movably connected to the liner base (42) along a direction perpendicular to the axis of the bolt (43), so that the limiting plate (44) can switch between the following two working positions: Workstation 1: a projection of at least part of the edge of the first hole area in the axial direction of the bolt (43) is located within the projection area of ​​the annular groove (432) in the axial direction of the bolt (43); and Workstation two, the projection of the second hole area in the axial direction of the bolt (43) completely covers the first projection of the bolt (43), and the first projection refers to the projection of the portion of the bolt (43) other than the bolt head (431) in the axial direction of the bolt (43).

2. The grinding device for cement processing according to claim 1, characterized in that: A concave cavity (413) is provided on one side of the lining plate body (41) facing the inner wall of the drum (20), and the lining plate base (42) is accommodated in the concave cavity (413).

3. The grinding device for cement processing according to claim 2, characterized in that: A first elastic element (45) is provided between the limit plate (44) and the lining base (42), and the first elastic element (45) is arranged so that its elastic force can drive the limit plate (44) to move from the first station to the second station; when the limit plate (44) is located at the first station, the limit plate (44) is completely retracted inside the lining base (42), and when the limit plate (44) is located at the second station, the limit plate (44) is protruding from one side wall of the lining base (42).

4. The grinding device for cement processing according to claim 3, characterized in that: A holding mechanism is also provided between the limit plate (44) and the lining base (42), and the holding mechanism has a holding position and a releasing position. When the holding mechanism is located at the holding position, the limit plate (44) located at the first position can be held at the first position. When the holding mechanism is located at the releasing position, the limit plate (44) can be released from the limit plate (44) so ​​that the limit plate (44) can move freely. The holding mechanism is configured to switch to the holding position when the lining body (41) is separated from the lining base (42) and the limit plate (44) is located at the first position, and to switch to the releasing position when the lining body (41) and the lining base (42) are closed.

5. The grinding device for cement processing according to claim 4, characterized in that: The retaining mechanism comprises a second through hole (442) provided on the limiting plate (44), and a pin rod (46) movably connected to the liner base (42) in a direction parallel to the axial direction of the bolt (43), the pin rod (46) comprising a flat shaft section (461), and a cylindrical section (462) is provided at one end of the flat shaft section (461) away from the axis of the roller (20); the second through hole (442) comprises a third hole area and a fourth hole area, the width of the third hole area is smaller than the diameter of the cylindrical section (462) and larger than the width of the flat shaft section (461), and the width of the fourth hole area is larger than the diameter of the cylindrical section (462); the pin rod (46) is connected to the liner base (4 2), a second elastic element (47) is provided between the second elastic element (47), and the second elastic element (47) is assembled so that its elastic force can drive the pin rod (46) to move in a direction close to the axis of the roller (20); when the limit plate (44) is located at the workstation one and the liner body (41) is separated from the liner base (42), the cylindrical section (462) of the pin rod (46) is located in the fourth hole area to prevent the limit plate (44) from moving toward the workstation two; when the liner body (41) and the liner base (42) are closed, the flat shaft section (461) of the pin rod (46) is located in the second through hole (442) to enable the limit plate (44) to move freely.

6. The grinding device for cement processing according to claim 5, characterized in that: A recessed portion (421) is provided on the side wall of the lining plate base (42); when the limit plate (44) is located at the first working position, one end of the limit plate (44) is flush with the recessed portion (421).

7. The grinding device for cement processing according to claim 1, characterized in that: A groove (412) is provided on the end surface of the lining plate body (41) which is perpendicular to the axis of the roller (20), and a side surface of the lining plate body (41) which is parallel to the axis of the roller (20) is parallel to the axis of the bolt (43).

8. The grinding device for cement processing according to claim 2, characterized in that: In the axial direction of the drum (20), the liner bases (42) of each two adjacent liner assemblies (40) are connected as one body.

9. A grinding process for cement processing, characterized in that: The grinding device for cement processing according to any one of claims 1 to 8 is used to grind raw materials or clinker.

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