A ball mill liner

Abstract

The present invention relates to the technical field of ball mills, and more specifically to a ball mill liner, comprising an arc-shaped liner, a bolt and a locking nut, wherein a movable cavity is provided in the liner, a seal and a first elastic member driving the seal piston to slide away from the outer arc surface of the liner are provided in the movable cavity, a first threaded portion and a second threaded portion with opposite thread directions are provided on the bolt, and the locking nut is threadedly installed on the second threaded portion so that the bolt tightens the liner to fix it inside the cylinder, and the first threaded portion is coupled with a threaded hole provided on the seal to pull the seal piston to slide. The invention provides a ball mill liner, which utilizes the sealing member to slide in the movable cavity piston, and the sealing member and the bolt thread cooperate to achieve the sealing of the gap between the liner through hole and the bolt, thereby preventing dust or liquid droplets from leaking to the outside of the cylinder along the gap between the liner through hole and the bolt, and improving the sealing performance of the liner to the cylinder.

Description

Technical Field

[0001] The invention relates to the technical field of ball mills, in particular to a lining plate for a ball mill. Background Art

[0002] The ball mill liner is used to protect the cylinder from direct impact and friction between the grinding body and the material. At the same time, different forms of liners can be used to adjust the movement state of the grinding body to enhance the grinding effect of the grinding body on the material, which helps to improve the grinding efficiency of the mill, increase output and reduce metal consumption.

[0003] According to the publication number CN110170359B, the publication (announcement) date: 2020.11.13, a ball mill liner is disclosed, including a spliced ​​liner, two fixed columns, and two extrusion devices. Two seamless butt blocks and two inlet and outlet grooves, two fixing holes are provided in the middle of the spliced ​​liner, and fixed columns are provided in the fixing holes. Two inlet and outlet grooves are provided at the left and right ends of the spliced ​​liner, and seamless butt blocks are provided inside the outer sides of the inlet and outlet grooves. The inner end of the seamless butt block is located in the extrusion device, and the extrusion device is installed at the inner end of the inlet and outlet grooves. The present invention can solve the problem that when the liner is installed, there is a gap between the two adjacent liner plates after installation, and cement mortar is usually used for filling. A small amount of cement mortar may fall during the filling process, and the cement mortar may penetrate into the existing liner during filling. The existing grinding body is attached to the liner and is taken away by the cylinder and then thrown down. When thrown down, the movement trajectory of the grinding body is relatively fixed, and it is difficult to fully crush the materials at different positions.

[0004] In the prior art including the above-mentioned patent, through holes are opened on the spliced ​​liner to connect to the cylinder through the threaded columns on the fixed columns. However, during the operation of the ball mill, the grinding body and the material are easy to hit the top of the fixed column and cause the fixed column to vibrate. After long-term operation, dust and droplets are easy to leak to the outside of the cylinder along the gap between the through holes of the spliced ​​liner and the fixed column. Summary of the invention

[0005] The object of the present invention is to provide a ball mill liner for solving the above-mentioned problems.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ball mill liner, comprising a cylinder, and also comprising an arc-shaped liner member, a bolt member and a locking nut, wherein a movable cavity is opened in the liner member, a seal member and a first elastic member driving the seal member piston to slide away from the outer arc surface of the liner member are arranged in the movable cavity, a first threaded portion and a second threaded portion with opposite thread directions are arranged on the bolt member, the locking nut is threadedly installed on the second threaded portion so that the bolt member tightens the liner member and fixes it on the inner side of the cylinder, and the first threaded portion is coupled with the threaded hole opened on the seal member to pull the seal member piston to slide.

[0007] Preferably, a cement barrier is provided between the lining member and the cylinder body, an overflow cavity and a connecting groove are provided on the lining member, the connecting groove is located on the outer arc surface of the lining member to communicate with the overflow cavity, and the bolt member tightens the lining member and fixes it to the inner side of the cylinder body to squeeze the cement slurry into the overflow cavity.

[0008] Preferably, the sealing member is provided with a pressure plate portion extending into the overflow cavity.

[0009] Preferably, a pre-connecting plate is symmetrically arranged on the lining member for rotation, a connecting portion and a resistance portion are arranged on the pre-connecting plate, a protrusion and an engaging groove are arranged on the connecting portion, and the two lining members are spliced ​​to the inner side of the cylinder body by bolt members so that the two sealing members slide against the resistance portion respectively to drive the two groups of pre-connecting plates to rotate, and the protrusions of the two groups of pre-connecting plates are respectively rotated and engaged in the engaging grooves of the other group of pre-connecting plates.

[0010] Preferably, the lining member is symmetrically arranged with a first arc seal and a second arc seal, the two lining members are spliced ​​so that the first arc seal and the second arc seal are coaxially attached and seal the gap between the two lining members, and the second arc seal is located between the first arc seal and the lining member, and a guide slope is provided on the first end of the first arc seal.

[0011] Preferably, a locking portion is provided on the pre-connection plate, and the pre-connection plate is pushed and rotated by the driven seal so that the locking portion squeezes and seals both ends of the first arc seal and the second arc seal.

[0012] Preferably, a swinging piece is rotatably provided on the locking portion, a weight portion is provided at the first end of the swinging piece, the first arc seal and the second arc seal are simultaneously combined with the two groups of lining parts to form a storage space, the storage space is connected to the gap between the two groups of lining parts, and the cylinder is driven to rotate so that the weight portion intermittently squeezes the first arc seal and the second arc seal to deform.

[0013] Preferably, it also includes a resistance column and a second elastic member, wherein a plurality of the resistance columns are symmetrically slidably arranged in the lining member, and the second elastic member drives the resistance column to slide axially so that the end thereof resists against the pressure plate portion, and the axis of the resistance column is arranged parallel to the axis of the bolt member.

[0014] Preferably, a plurality of flexible partitions are provided in a linear array on the resistance column to form a plurality of contact grooves, a contact portion is provided on the second end of the swinging member, the flexible partitions follow the synchronous axial movement of the sealing member so that the contact portion sequentially enters and disengages from the plurality of contact grooves to make the swinging member swing back and forth, and the weight portion follows the swinging of the swinging member to reciprocately squeeze the first arc seal and the second arc seal.

[0015] Preferably, a sliding portion is symmetrically arranged on the abutment column, the sliding portion is slidably arranged in the lining plate member, and one end of the second elastic member pushes the sliding portion to keep the first end of the abutment column in abutment on the pressure plate member.

[0016] In the above technical scheme, a ball mill liner provided by the present invention has the following beneficial effects: the sealing member is located in the movable cavity and the piston is slidably arranged, and the sealing member and the bolt member are threadedly matched to achieve the sealing of the gap between the liner member through hole and the bolt member, thereby preventing dust or droplets from leaking to the outside of the cylinder along the gap between the liner member through hole and the bolt member, and improving the sealing performance of the liner member to the cylinder. Secondly, because the sealing member is coupled with the first threaded portion, the locking nut is coupled with the second threaded portion, and the sealing member is pulled by the first elastic member to slide toward the end away from the locking nut, at this time, the sealing member and the first elastic member also play a role in preventing the bolt member and the locking nut from loosening and retreating. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present invention;

[0019] Figure 2 A schematic cross-sectional view of the structure of the sealing member provided by an embodiment of the present invention when the sealing member slides close to the cylinder;

[0020] Figure 3 A schematic cross-sectional view of the structure of the interference column provided by an embodiment of the present invention;

[0021] Figure 4 A schematic cross-sectional view of the structure of the sealing member provided in an embodiment of the present invention when the sealing member is not close to the cylinder;

[0022] Figure 5 A schematic diagram of the exploded structure of a seal and a bolt member provided in an embodiment of the present invention;

[0023] Figure 6 A schematic diagram of an exploded structure of a pre-connection plate and abutment columns provided in an embodiment of the present invention;

[0024] Figure 7 A schematic diagram of the working principle of two lining plate members provided in an embodiment of the present invention when they are spliced;

[0025] Figure 8 The embodiment of the present invention provides Figure 2 A local enlarged schematic diagram of the middle A;

[0026] Fig. 9 The embodiment of the present invention provides Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0027] Fig.10 The embodiment of the present invention provides Figure 7 A partial enlarged schematic diagram of point C in the middle.

[0028] Description of reference numerals:

[0029] 1. Lining member; 11. Active cavity; 12. Overflow cavity; 121. Connecting groove; 2. Bolt member; 21. First threaded portion; 22. Second threaded portion; 3. Sealing member; 31. Active portion; 32. Pressure plate portion; 41. First arc seal; 42. Second arc seal; 5. Pre-connecting plate; 51. Connecting portion; 511. Protruding portion; 512. Fitting groove; 52. Interference portion; 53. Locking portion; 6. Swinging member; 61. Weight portion; 62. Contact portion; 7. Interference column; 71. Flexible partition member; 72. Contact groove; 73. Sliding portion; 81. Cylinder; 82. Cement barrier; 83. Locking nut; 91. First elastic member; 92. Second elastic member. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0031] like Figure 1-10 As shown, a ball mill liner includes a cylinder 81, and also includes an arc-shaped liner component 1, a bolt component 2 and a locking nut 83. A movable cavity 11 is opened in the liner component 1, and a seal 3 and a first elastic component 91 that drives the piston of the seal 3 to slide away from the outer arc surface of the liner component 1 are arranged in the movable cavity 11. A first threaded portion 21 and a second threaded portion 22 with opposite thread directions are arranged on the bolt component 2. The locking nut 83 is threadedly installed on the second threaded portion 22 so that the bolt component 2 tightens the liner component 1 and fixes it on the inner side of the cylinder 81, and the first threaded portion 21 is coupled with the threaded hole opened on the seal 3 to pull the piston of the seal 3 to slide.

[0032] Specifically, Figure 2 As shown, the lining member 1 is provided with an active cavity 11, and the active portion 31 of the sealing member 3 is piston-slidably disposed in the active cavity 11, and the sealing member 3 is coaxially provided with a threaded hole, as shown in FIG. Figure 8As shown, when it is necessary to lock the lining member 1 to the inner side of the cylinder 81, first extend the bolt member 2 into the movable cavity 11 and rotate through the sealing member 3, then make the end of the bolt member 2 pass through the sealing member 3, the lining member 1 and the cylinder 81 to extend to the outside of the cylinder 81, then rotate the bolt member 2 in the opposite direction so that the first threaded portion 21 is threadedly installed into the threaded hole of the sealing member 3, and then install the locking nut 83 to the second threaded portion 22 of the bolt member 2 extending out of the cylinder 81. At this time, the bolt member 2 is subjected to the pulling force of the locking nut 83 to tighten and fix the lining member 1 to the inner side of the cylinder 81, and the bolt member 2 is subjected to the pulling force of the locking nut 83 to drive the sealing member 3 located in the movable cavity 11 to coaxially overcome the pulling force of the first elastic member 91 and slide toward the side of the cylinder 81. At this time, the sealing member 3 is arranged to slide as a piston in the movable chamber 11, and the sealing member 3 and the bolt member 2 are threadedly matched to seal the gap between the through hole of the lining member 1 and the bolt member 2, thereby preventing dust or droplets from leaking along the gap between the through hole of the lining member 1 and the bolt member 2 to the outside of the cylinder 81, thereby improving the sealing performance of the lining member 1 to the cylinder 81.

[0033] Secondly, since the seal 3 is coupled to the first threaded portion 21, the locking nut 83 is coupled to the second threaded portion 22, and the seal 3 is pulled by the first elastic member 91 to slide toward the end away from the locking nut 83, and the first threaded portion 21 and the second threaded portion 22 on the bolt member 2 are coupled to the seal 3 and the locking nut 83 in opposite directions, respectively, the seal 3 and the first elastic member 91 also have the effect of preventing loosening and stopping retreat of the threaded connection between the bolt member 2 and the locking nut 83, alleviating the loosening of the locking nut 83 caused by the vibration generated by the grinding body hitting the bolt member 2, thereby further improving the fixing stability of the lining member 1.

[0034] The first elastic member 91 may be replaced by a tension spring, an elastic plate, an air bag or other elastic objects known to those skilled in the art.

[0035] In the above technical solution, the sealing member 3 is arranged to slide in the movable chamber 11, and the sealing member 3 and the bolt member 2 are threadedly matched to seal the gap between the through hole of the lining member 1 and the bolt member 2, thereby preventing dust or liquid droplets from leaking to the outside of the cylinder 81 along the gap between the through hole of the lining member 1 and the bolt member 2, and improving the sealing performance of the lining member 1 to the cylinder 81. Secondly, since the sealing member 3 is coupled with the first threaded portion 21, the locking nut 83 is coupled with the second threaded portion 22, and the sealing member 3 is pulled by the first elastic member 91 to slide toward the end away from the locking nut 83, at this time, the sealing member 3 and the first elastic member 91 also play a role in preventing the bolt member 2 and the locking nut 83 from loosening and retreating.

[0036] As another embodiment provided by the present invention, a cement barrier layer 82 is arranged between the lining member 1 and the cylinder 81, and an overflow cavity 12 and a connecting groove 121 are opened on the lining member 1. The connecting groove 121 is located on the outer arc surface of the lining member 1 to communicate with the overflow cavity 12. The bolt member 2 tightens the lining member 1 and fixes it to the inner side of the cylinder 81 to squeeze the cement slurry into the overflow cavity 12.

[0037] Specifically, Figure 2 As shown, an overflow cavity 12 is provided on the lining member 1. When the lining member 1 is fixed to the inner side of the cylinder 81 by the bolt member 2, the connecting groove 121 faces the inner side of the cylinder 81. Since it is necessary to lay a cement interlayer 82 between the lining member 1 and the cylinder 81 during the installation of the lining member 1, cement slurry is poured into the inner side of the cylinder 81 during the specific implementation process, and then the bolt member 2 is tightened to squeeze out the excess cement slurry between the lining member 1 and the cylinder 81. The cement slurry is easily squeezed out between the two installed lining members 1, thereby causing the problem of increasing the gap. Therefore, by utilizing the existence of the overflow cavity 12 and the connecting groove 121, when the lining member 1 is tightened to the cylinder 81 by the bolt member 2, the overflowing cement slurry is easily squeezed into the overflow cavity 12 along the connecting groove 121, thereby preventing the cement slurry from entering the gap between the two installed lining members 1, thereby improving the sealing of the connection between the lining members 1 and reducing the installation gap between the lining members 1.

[0038] Secondly, when the ball mill is working, the lining member 1 is easily plastically deformed by the impact of the grinding body, that is, the lining member 1 is impacted along the radial direction of the cylinder 81, which causes the lining member 1 to extend in length along the circumference of the cylinder 81. When the lining member 1 is installed, the two ends along the circumference of the cylinder 81 are in conflict with each other. When the plastic deformation of the lining member 1 is too large, the internal stress of the lining member 1 will cause the lining member 1 to arch toward the inner side of the cylinder 81 along the radial direction of the cylinder 81, and then break the bolt member 2, causing the lining member 1 to fall off. However, due to the presence of the overflow cavity 12, the lining member 1 can be more easily concavely deformed away from the middle of the cylinder 81 when it is impacted along the radial direction of the cylinder 81, thereby avoiding the problem that the bolts are broken and the lining member 1 falls off completely due to the arching of the lining member 1 after the plastic deformation caused by the impact, thereby improving production safety.

[0039] As another embodiment provided by the present invention, a pressure plate portion 32 extending into the overflow cavity 12 is provided on the sealing member 3 .

[0040] Specifically, Figure 8As shown, the pressure plate portion 32 of the seal 3 extends into the overflow cavity 12. After cement slurry is poured into the inner side of the cylinder 81, the locking nut 83 and the bolt member 2 are used to tighten the lining member 1 to the cylinder 81. The bolt member 2 drives the seal 3 to slide toward the inner wall of the cylinder 81 so that the pressure plate portion 32 squeezes and flattens the cement slurry in the overflow cavity 12, thereby allowing the pressurized overflowing cement slurry to be located in the overflow cavity 12 to form a secondary cement layer. The overflow cavity 12 and the pressure plate portion 32 are used to form a double-layer cement layer between the lining member 1 and the cylinder 81 when the cement barrier layer 82 is poured, thereby further improving the sealing performance of the lining member 1 during installation and forming, and avoiding liquid and ash leakage problems.

[0041] Secondly, when the cement barrier 82 solidifies, the bolt member 2 needs to be retracted and tightened again to make sure that the bolt member 2 is not blocked and locked by the cement barrier 82, so as to ensure the detachability of the bolt member 2. However, when re-tightening the bolt member 2, excessive rotation of the locking nut 83 will cause the lining member 1 to increase the pressure on the solidified cement barrier 82, thereby causing the formed cement barrier 82 to crack and be damaged.

[0042] Due to the presence of the secondary cement layer in the overflow cavity 12, the secondary cement layer contacts the first threaded portion 21 of the bolt member 2, so that the secondary cement layer solidifies to form a quasi-threaded hole that wraps the first threaded portion 21. Due to the pulling force of the secondary cement layer on the bolt member 2, if the bolt member 2 is rotated out, the sealing member 3 remains in the original position and will not follow the vertical movement of the bolt member 2. At this time, the sealing member 3 and the calibrated bolt member 2 just completely tighten the lining member 1 but will not crush the cement barrier 82. When the bolt member 2 is rotated out and then rotated and tightened until the nut of the bolt member 2 contacts the lining member 1, it is locked. At this time, the locking nut 83 is installed from the second threaded portion 22 of the bolt member 2 to complete the re-tightening of the bolt member 2. The fixing of the sealing member 3 prevents the lining member 1 from applying excessive pressure to the cement barrier 82 after the bolt member 2 is disassembled and re-fixed, thereby avoiding the compression cracking of the cement barrier 82 and further improving the sealing performance and service life.

[0043] As another embodiment provided by the present invention, a pre-connecting plate 5 is symmetrically rotatably arranged on the lining member 1, a connecting portion 51 and a resistance portion 52 are arranged on the pre-connecting plate 5, a protrusion 511 and an engaging groove 512 are arranged on the connecting portion 51, and two lining members 1 are spliced ​​to the inner side of the cylinder 81 through the bolt member 2 so that the two sealing members 3 can slide against the resistance portion 52 respectively to drive the two groups of pre-connecting plates 5 to rotate, and the protrusions 511 of the two groups of pre-connecting plates 5 are respectively rotatably engaged in the engaging groove 512 of the other group of pre-connecting plates 5.

[0044] Specifically, Figure 4As shown, two groups of pre-connecting plates 5 are symmetrically arranged on the lining member 1. When the two lining members 1 are spliced ​​to the inner side of the cylinder 81, the pre-connecting plate 5 on the lining member 1 that has been fixed is pushed by the sliding of the seal 3 and rotated to the locking position, and the pre-connecting plate 5 on the other lining member 1 to be installed extends into the side of the fixed lining member 1. When the bolt member 2 on the lining member 1 to be installed is threadedly connected with the seal 3 and driven downward by the locking nut 83, the movable portion 31 of the seal 3 pushes the pre-connecting plate 5 on the lining member 1 to be installed to rotate, so that the protrusions 511 on the two pre-connecting plates 5 are respectively rotated and engaged in the engaging grooves 512 of the other group of pre-connecting plates 5, thereby realizing the pre-connection positioning locking between the two lining members 1 along the circumference of the cylinder 81, ensuring that the two lining members 1 are pre-fixed before the locking nut 83 and the bolt member 2 are fully tightened to the lining member 1.

[0045] As another embodiment provided by the present invention, a first arc seal 41 and a second arc seal 42 are symmetrically arranged on the lining member 1, and the two lining members 1 are spliced ​​so that the first arc seal 41 and the second arc seal 42 are coaxially attached and seal the gap between the two lining members 1, and the second arc seal 42 is located between the first arc seal 41 and the lining member 1, and a guide slope is provided on the first end of the first arc seal 41.

[0046] Specifically, Figure 4 As shown, the end of the first arc seal 41 away from the lining member 1 is the first end, and the other end is the second end. The second end of the first arc seal 41 is fixedly connected to the lining member 1, and the second arc seal 42 is also fixed to the lining member 1 at one end. Figure 8 As shown, when the two lining members 1 are spliced ​​to the inner side of the cylinder 81, the first end of the first arc seal 41 of one lining member 1 approaches the end of the second arc seal 42 of the other lining member 1, and the end of the second arc seal 42 contacts the guide slope of the first arc seal 41 to slide into the inner arc layer of the first arc seal 41. When the two lining members 1 are completely spliced ​​and contact each other, the second arc seal 42 fits the inner arc side of the first arc seal 41. At this time, the two ends of the first arc seal 41 and the second arc seal 42 are respectively in contact with the two lining members 1, so that the first arc seal 41 and the second arc seal 42 can seal the gap between the two lining members 1, thereby avoiding the problem of dust or droplets leaking to the outside of the cylinder 81 along the splicing gap between the lining members 1, and further improving the sealing of the cylinder 81 and the lining member 1.

[0047] As another embodiment provided by the present invention, a locking portion 53 is provided on the pre-connection plate 5 , and the pre-connection plate 5 is pushed and rotated by the driven seal 3 so that the locking portion 53 squeezes and seals both ends of the first arc seal 41 and the second arc seal 42 .

[0048] Specifically, Figure 6 As shown, a locking portion 53 is provided on the pre-connecting plate 5. When the lining members 1 are spliced ​​to the inner side of the cylinder 81, the two ends of the first arc seal 41 and the second arc seal 42 are respectively in contact with the two lining members 1, so that the first arc seal 41 and the second arc seal 42 can seal the gap between the two lining members 1. When the bolt member 2 is threadedly connected to the sealing member 3 and driven downward by the locking nut 83, the movable portion 31 of the sealing member 3 pushes the pre-connecting plate 5 to rotate so that the locking portion 53 approaches and squeezes and seals the two ends of the first arc seal 41 and the second arc seal 42, thereby further improving the sealing performance of the gap between the lining members 1.

[0049] As another embodiment provided by the present invention, a swinging member 6 is rotatably provided on the locking portion 53, a weight portion 61 is provided on the first end of the swinging member 6, the first arc seal 41 and the second arc seal 42 are simultaneously surrounded by two groups of lining members 1 to form a storage space, the storage space is connected to the gap between the two groups of lining members 1, and the cylinder 81 is driven to rotate so that the weight portion 61 intermittently squeezes the first arc seal 41 and the second arc seal 42 to deform.

[0050] Specifically, Figure 6 As shown, the swing member 6 is rotatably disposed on the locking portion 53, and the left end of the swing member 6 is the first end. Fig.10 As shown, when the lining members 1 are spliced ​​to the inner side of the cylinder 81, the first arc seal 41 and the second arc seal 42 are in contact with the two lining members 1 at both ends. At this time, the first arc seal 41 and the second arc seal 42 are simultaneously surrounded by the two groups of lining members 1 to form a storage space, and the storage space is connected to the splicing gap between the two lining members 1. When all the lining members 1 are installed, a plurality of lining members 1 are spliced ​​to the inner side of the cylinder 81 in a circular array, and the cylinder 81 rotates to spherically move the material with moisture. During grinding operation, the swinging member 6 and the weight part 61 on the vertically downward side of the cylinder 81 are away from the first arc seal 41 and the second arc seal 42. At this time, the storage space is not squeezed, so that the tension of the liquid and the low air pressure in the storage space are utilized to absorb the moisture in the wet material in the cylinder 81 into the storage space along the gaps between the lining members 1, so that the material is drier during grinding, thereby improving the grinding efficiency. In addition, the movement of water along the joint gaps of the lining members 1 can also cool the lining members 1 and increase the service life of the lining members 1.

[0051] When the cylinder 81 rotates, the weight part 61 on the vertical upper side of the cylinder 81 presses down the first arc seal 41 and the second arc seal 42 under the force of gravity. The first arc seal 41 and the second arc seal 42 are deformed under pressure to squeeze out the moisture in the storage space, and the dust particles floating in the cylinder 81 are brought into contact with the liquid, thereby achieving dust reduction in the cylinder 81 and avoiding the problem of excessive dust flying at the discharge port.

[0052] As another embodiment provided by the present invention, it also includes a resistance column 7 and a second elastic member 92. A plurality of resistance columns 7 are symmetrically slidably arranged in the lining member 1. The second elastic member 92 drives the resistance column 7 to slide axially so that the end thereof abuts against the pressure plate portion 32. The axis of the resistance column 7 is arranged parallel to the axis of the bolt member 2.

[0053] Specifically, Figure 3 As shown, the resistance column 7 is slidably arranged in the lining member 1, and the sliding direction of the resistance column 7 is parallel to the axial direction of the bolt member 2, and the second elastic member 92 drives the resistance column 7 to slide so that the end of the resistance column 7 always resists on the pressure plate portion 32, and the plurality of resistance columns 7 are resisted by the second elastic member 92 against the peripheral side of the pressure plate portion 32, thereby evenly distributing the pressure of the pressure plate portion 32 on the cement slurry in the overflow cavity 12, thereby further improving the molding flatness of the secondary cement layer.

[0054] Secondly, when the lining member 1 is impacted by the grinding body in the cylinder 81 for a long time and produces plastic deformation, the abutment column 7 is easily stuck in the lining member 1 due to the deformation of the lining member 1. At this time, the abutment column 7 and the sealing member 3 bear the deformation tension of the lining member 1 along the axial direction of the bolt member 2 together with the bolt member 2, thereby reducing the deformation tension of the lining member 1 on the bolt member 2, and further avoiding the problem of the lining member 1 falling off due to the breakage of the bolt member 2.

[0055] Furthermore, the sliding part 73 is symmetrically arranged on the abutment column 7, and the sliding part 73 is slidably arranged in the lining plate member 1, and one end of the second elastic member 92 pushes the sliding part 73 to keep the first end of the abutment column 7 against the pressing plate portion 32, and the sliding part 73 is slidably arranged in the lining plate member 1, and the second elastic member 92 pushes the sliding part 73 to slide so that the abutment column 7 is against the pressing plate portion 32, and the sliding part 73 is used to improve the sliding stability of the abutment column 7. Among them, the second elastic member 92 can be replaced by other elastic objects known to those skilled in the art, such as springs, elastic plates, air bags, etc.

[0056] As another embodiment provided by the present invention, a plurality of flexible partitions 71 are arranged in a linear array on the resistance column 7 to form a plurality of contact grooves 72, a contact portion 62 is arranged on the second end of the swinging member 6, the flexible partition 71 follows the synchronous axial movement of the sealing member 3 so that the contact portion 62 sequentially enters and disengages from the plurality of contact grooves 72 to make the swinging member 6 swing back and forth, and the weight portion 61 follows the swinging of the swinging member 6 to reciprocately squeeze the first arc seal 41 and the second arc seal 42.

[0057] Specifically, Figure 6 As shown, a plurality of flexible partitions 71 are arranged on the resistance column 7 to form a plurality of contact grooves 72, and the right end of the swinging member 6 is the second end, and a contact portion 62 is arranged on the second end of the swinging member 6. When the bolt member 2 tightens the lining member 1 to extrude the cement slurry, the sealing member 3 and the resistance column 7 move vertically downward following the bolt member 2. At this time, as the resistance column 7 slides, the contact portion 62 of the swinging member 6 successively enters and leaves the contact groove 72, so that in the process of the bolt member 2 tightening the lining member 1, the swinging member 6 continuously rotates and swings back and forth, and vertical vibration is generated on the resistance column 7. The vibration on the resistance column 7 is transmitted to the pressure plate portion 32 so that the pressure plate can achieve the effect of vibrating the cement slurry in the overflowing cavity 12, eliminate the bubbles generated when the cement slurry is squeezed and overflowed, and improve the formation quality of the secondary cement layer in the overflowing cavity 12. Secondly, when the resistance column 7 slides, the continuous rotation and swinging of the swing member 6 will reciprocally squeeze the first arc seal 41 and the second arc seal 42, thereby continuously applying pressure to the splicing gap between the lining members 1, and then squeezing out and blowing away the dust or debris in the gap between the lining members 1 during the installation process, further improving the installation sealing between the two lining members 1.

[0058] Working principle: first, cement slurry is poured into the inner side of the cylinder 81, the bolt member 2 is extended into the movable cavity 11 and rotated through the sealing member 3, and then the end of the bolt member 2 passes through the sealing member 3, the lining member 1 and the cylinder 81 to extend to the outside of the cylinder 81, and then the bolt member 2 is rotated in the opposite direction to make the first threaded portion 21 threadedly installed into the threaded hole of the sealing member 3, and then the locking nut 83 is installed on the second threaded portion 22 of the bolt member 2 extending from the outside of the cylinder 81;

[0059] The locking nut 83 is rotated to tighten the lining member 1 to the cylinder 81, and the excess cement slurry between the lining member 1 and the cylinder 81 is squeezed into the overflow chamber 12 along the connecting groove 121, and the bolt member 2 drives the sealing member 3 and the abutment column 7 to slide toward the inner wall of the cylinder 81 so that the pressure plate portion 32 squeezes and flattens the cement slurry in the overflow chamber 12, so that the pressurized overflowing cement slurry can be located in the overflow chamber 12 to form a secondary cement layer, and as the abutment column 7 slides, the contact portion 62 of the swing member 6 enters and leaves the contact groove 72 in turn, so that in the process of the bolt member 2 tightening the lining member 1, the swing member 6 continuously rotates and swings back and forth, and the abutment column 7 generates vertical shaking, and the shaking on the abutment column 7 is transmitted to the pressure plate portion 32 so that the pressure plate vibrates the cement slurry in the overflow chamber 12;

[0060] When the two lining members 1 are completely spliced ​​and contact each other, the two ends of the first arc seal 41 and the second arc seal 42 are respectively in contact with the two lining members 1 to seal the gap between the two lining members 1. As the bolt member 2 drives the seal 3 and the contact column 7 to slide toward the inner wall of the cylinder 81, the movable portion 31 of the seal 3 pushes the pre-connecting plate 5 on the lining member 1 to be installed to rotate, so that the protrusions 511 on the two pre-connecting plates 5 are respectively rotated and engaged in the engaging grooves 512 of the other group of pre-connecting plates 5, thereby realizing the pre-connection positioning locking between the two lining members 1 along the circumference of the cylinder 81; and when the contact column 7 slides, the continuous rotation and swinging of the swing member 6 will also reciprocately squeeze the first arc seal 41 and the second arc seal 42, thereby continuously applying pressure to the splicing gap between the lining members 1, thereby squeezing out and blowing away the dust or debris in the gap between the lining members 1 during the installation process, further improving the installation sealing between the two lining members 1.

[0061] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A ball mill liner, comprising a cylinder (81), characterized in that: It also includes an arc-shaped lining member (1), a bolt member (2) and a locking nut (83); the lining member (1) is provided with an active cavity (11); the active cavity (11) is provided with a sealing member (3) and a first elastic member (91) for driving the piston of the sealing member (3) to slide away from the outer arc surface of the lining member (1); the bolt member (2) is provided with a first threaded portion (21) and a second threaded portion (22) having opposite thread directions; the locking nut (83) is threadedly mounted on the second threaded portion (22) so that the bolt member (2) tightens the lining member (1) and fixes it to the inner side of the cylinder (81); and the first threaded portion (21) is coupled with a threaded hole provided on the sealing member (3) to pull the piston of the sealing member (3) to slide; A cement barrier layer (82) is provided between the lining member (1) and the cylinder (81); an overflow cavity (12) and a connecting groove (121) are provided on the lining member (1); the connecting groove (121) is located on the outer arc surface of the lining member (1) so as to communicate with the overflow cavity (12); the bolt member (2) tightens the lining member (1) and fixes it to the inner side of the cylinder (81) so as to squeeze the cement slurry into the overflow cavity (12); The sealing member (3) is provided with a pressure plate portion (32) extending into the overflow cavity (12).

2. A ball mill liner according to claim 1, characterized in that: A pre-connecting plate (5) is symmetrically arranged on the lining plate member (1) for rotation, and a connecting portion (51) and a resisting portion (52) are arranged on the pre-connecting plate (5), and a protruding portion (511) and an engaging groove (512) are arranged on the connecting portion (51). The two lining plate members (1) are spliced ​​to the inner side of the cylinder (81) by means of bolt members (2) so that the two sealing members (3) respectively slide against the resisting portion (52) to drive the two groups of pre-connecting plates (5) to rotate, and the protruding portions (511) of the two groups of pre-connecting plates (5) are respectively rotated and engaged in the engaging groove (512) of the other group of pre-connecting plates (5).

3. A ball mill liner according to claim 2, characterized in that: A first arc-shaped seal (41) and a second arc-shaped seal (42) are symmetrically arranged on the lining plate member (1); the two lining plate members (1) are spliced ​​together so that the first arc-shaped seal (41) and the second arc-shaped seal (42) are coaxially attached and seal the gap between the two lining plate members (1); the second arc-shaped seal (42) is located between the first arc-shaped seal (41) and the lining plate member (1); and a guide slope is provided on the first end of the first arc-shaped seal (41).

4. A ball mill liner according to claim 3, characterized in that: The pre-connection plate (5) is provided with a locking portion (53), and the pre-connection plate (5) is pushed and rotated by the driven seal (3) so that the locking portion (53) squeezes and seals the two ends of the first arc-shaped seal (41) and the second arc-shaped seal (42).

5. A ball mill liner according to claim 4, characterized in that: A swinging member (6) is rotatably arranged on the locking portion (53), a weight portion (61) is arranged on the first end of the swinging member (6), the first arc seal (41) and the second arc seal (42) are simultaneously surrounded by two groups of lining members (1) to form a storage space, the storage space is connected to the gap between the two groups of lining members (1), and the cylinder (81) is driven to rotate so that the weight portion (61) intermittently squeezes the first arc seal (41) and the second arc seal (42) to deform.

6. A ball mill liner according to claim 5, characterized in that: It also includes a resistance column (7) and a second elastic member (92), wherein a plurality of the resistance columns (7) are symmetrically slidably arranged in the lining member (1), and the second elastic member (92) drives the resistance column (7) to slide axially so that the end thereof abuts against the pressure plate portion (32), and the axis of the resistance column (7) is arranged parallel to the axis of the bolt member (2).

7. A ball mill liner according to claim 6, characterized in that: A plurality of flexible partitions (71) are arranged in a linear array on the abutment column (7) to form a plurality of contact grooves (72); a contact portion (62) is arranged on the second end of the swinging member (6); the flexible partition (71) moves axially synchronously with the sealing member (3) so that the contact portion (62) sequentially enters and leaves the plurality of contact grooves (72) to make the swinging member (6) swing back and forth; and the weight portion (61) swings with the swinging member (6) to reciprocately squeeze the first arc seal (41) and the second arc seal (42).

8. A ball mill liner according to claim 6, characterized in that: The abutment column (7) is symmetrically provided with a sliding portion (73), the sliding portion (73) being slidably arranged in the lining plate component (1), and one end of the second elastic component (92) pushes against the sliding portion (73) so that the first end of the abutment column (7) remains in abutment against the pressure plate component (32).

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