Bolt sealing device for lining plate of rod mill

Abstract

The utility model discloses a rod mill lining plate bolt sealing device which comprises a bolt, a sealing ring and a sealing ring. One end of the bolt penetrates through a cylinder body of a rod mill and is connected with a lining plate in the cylinder body; the nut is in threaded connection with the other end, located on the outer side of the cylinder body, of the bolt; the gland is arranged at the other end, located on the outer side of the cylinder, of the bolt in a sleeving mode, one side of the gland makes contact with the nut, and a groove is formed in the other side of the gland. The structure design is reasonable, the gland, the sealing piece and the filler box are tightly attached to the barrel under the extrusion effect of the nut, multiple sealing defense lines are formed, the sealing effect is further improved, and the leakage risk is reduced. Moreover, the thread filling rib is meshed with the bolt thread, a gap between the bolt and the mounting hole is sealed from the source, dust, grinding media and other impurities are effectively prevented from entering equipment, the cylinder and the bolt are prevented from being damaged too early due to corrosion and abrasion, and the service life of the equipment is remarkably prolonged.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of rod mill sealing, in particular to a rod mill lining plate bolt sealing device. BACKGROUND

[0002] In the mining and building material industries, large rod mills play an important role as key equipment for material grinding. However, the problem of slurry leakage between the lining plate bolt and the cylinder of the rod mill has long plagued the industry. When the large rod mill is working, the lining plate is subjected to the continuous impact of more than 100 tons of steel rods inside the mill, so that each lining plate is always in a dynamic stress state. In this process, the relative displacement between the bolt and the cylinder occurs continuously.

[0003] The existing sealing technology is difficult to adapt to such complex dynamic conditions. The ordinary sealing structure cannot effectively compensate for the displacement between the bolt and the cylinder, resulting in rapid wear of the sealing material, degradation of the sealing performance, and continuous leakage of materials and grinding media from the gap between the bolt and the cylinder. This not only causes waste of materials and increases production costs, but also corrodes other parts of the equipment, shortens the service life of the equipment, and increases the maintenance cost of the equipment. CONTENT OF THE INVENTION

[0004] The purpose of the embodiment of the application is to provide a rod mill lining plate bolt sealing device, which comprises:

[0005] a bolt, one end of which penetrates through the cylinder of the rod mill and is connected with the lining plate in the cylinder;

[0006] a nut, which is threadedly connected to the other end of the bolt located outside the cylinder;

[0007] a gland, which is sleeved on the other end of the bolt located outside the cylinder, one side of the gland being in contact with the nut and the other side of the gland being provided with a groove;

[0008] a sealing element, which has a mounting hole, the sealing element being sleeved on the other end of the bolt through the mounting hole, a threaded filler rib being arranged on the hole wall of the mounting hole to seal the gap between the bolt and the mounting hole, one side of the sealing element close to the gland being in contact with the inner wall of the groove, and the other side of the sealing element surrounding the mounting hole being provided with an annular groove;

[0009] a packing box, which is embedded in the annular groove and connected with the cylinder;

[0010] The nut is rotated along the bolt in the direction close to the cylinder to press the gland, the sealing element and the packing box on the cylinder, and the lining plate is fixed in the cylinder.

[0011] As an optional embodiment, the threaded filling ribs are provided in plurality.

[0012] As an optional embodiment, the inner wall of the mounting hole is provided with an annular groove to form a deformation absorption groove, which is arranged between any two adjacent threaded filling ribs.

[0013] As an optional embodiment, a first end portion is formed between the hole wall of the mounting hole and the inner wall of the annular groove, a second end portion is formed between the outer wall of the annular groove and the outer wall of the sealing member, the bottom surface of the second end portion is higher than the bottom surface of the gland, and the bottom surface of the first end portion is lower than the bottom surface of the second end portion.

[0014] As an optional embodiment, a limiting column is arranged on the end of the bolt connected with the lining plate, and the diameter of the limiting column decreases from the end far away from the cylinder to the end close to the cylinder.

[0015] As an optional embodiment, the packing box is welded to the peripheral wall of the cylinder.

[0016] As an optional embodiment, the gland is made of metal material, and the sealing member is made of rubber material.

[0017] The rod mill lining plate bolt sealing device provided by the embodiment of the application has the following beneficial effects:

[0018] The structure of the rod mill lining plate bolt sealing device is reasonable, and the gland, the sealing member and the packing box are tightly attached to the cylinder under the extrusion of the nut, thereby forming multiple sealing lines and further improving the sealing effect and reducing the risk of leakage. In addition, the threaded filling ribs and the bolt threads are engaged with each other, thereby sealing the gap between the bolt and the mounting hole from the source, effectively preventing impurities such as dust and grinding medium from entering the interior of the equipment, preventing the cylinder and the bolt from being damaged due to corrosion and wear, and significantly prolonging the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 4 is a sectional view of the rod mill lining plate bolt sealing device according to the embodiment of the application;

[0020] Figure 2 FIG. 5 is a sectional view of the gland according to the embodiment of the application;

[0021] Figure 3 FIG. 6 is a sectional view of the sealing member according to the embodiment of the application.

[0022] As an optional embodiment, the threaded filling ribs are provided in plurality.

[0023] 11, barrel; 12, liner; 2, bolt; 21, limiting column; 3, nut; 4, gland; 41, groove; 5, sealing element; 51, mounting hole; 52, threaded filler; 53, annular groove; 54, deformation absorption groove; 55, first end; 56, second end; 6, packing box. DETAILED DESCRIPTION

[0024] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0025] It is to be understood that various alterations, modifications and improvements can be made to the embodiments of the application herein disclosed. Accordingly, it is intended to embrace all such alterations, modifications and improvements as fall within the scope and spirit of the application.

[0026] The accompanying drawings incorporated in and forming a part of the specification, illustrate embodiments of the present application and, together with the description given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0027] These and other characteristics of the present application will become apparent upon consideration of the following detailed description taken in conjunction with the accompanying drawings.

[0028] It should also be understood that, although the terms "first" and "second" can be used herein to describe various elements, these elements should not be limited by these terms since such elements are commonly known to one of ordinary skill in the art and can be termed in a different manner.

[0029] The above and other aspects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which:

[0030] Specific embodiments of the present application are described herein with reference to the accompanying drawings. However, it will be understood that the embodiments described are merely examples of the present application and that the application can be embodied in many other forms. Well-known and / or redundant functions and structures are not described in detail to avoid obscuring the present application unnecessarily. Therefore, specific structural and functional details disclosed herein are not to be interpreted in a limiting manner, but merely as a basis for the claims and representative basis for teaching one skilled in the art to variously employ the present application.

[0031] The specification can use phrases such as "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which can refer to one or more embodiments of the same or different embodiments under the present application.

[0032] A rod mill liner bolt sealing device according to an embodiment of the present application, as shown in Figures 1-3 includes a bolt 2, a nut 3, a gland 4, a sealing element 5 and a packing box 6.

[0033] One end of the bolt 2 penetrates the barrel 11 of the rod mill, and is connected with the liner plate 12 in the barrel 11. The nut 3 is screwed on the other end of the bolt 2 outside the barrel 11.

[0034] The gland 4 is sleeved on the other end of the bolt 2 outside the barrel 11, one side of the gland 4 is in contact with the nut 3, and the other side is provided with a groove 41. The gland 4 transmits the pressure of the nut 3 and cooperates with the sealing element 5. The gland 4 is made of metal material, which has high strength and rigidity, can withstand large pressure, and does not deform during extrusion, effectively transmitting the pressure.

[0035] The sealing element 5 has a mounting hole 51, the sealing element 5 is sleeved on the other end of the bolt 2 through the mounting hole 51, a threaded filler rib 52 is arranged on the hole wall of the mounting hole 51 to seal the gap between the bolt 2 and the mounting hole 51, one side of the sealing element 5 close to the gland 4 is in contact with the inner wall of the groove 41, and the other side is provided with an annular groove 53 around the mounting hole 51. The threaded filler rib 52 is in threaded cooperation with the bolt 2 to block dust, liquid and the like from entering.

[0036] The sealing element 5 is made of rubber material, which has good elasticity and sealing performance, can better fill the gap, adapt to different working environments and deformation conditions, and improve the sealing effect and reliability of the device.

[0037] The packing box 6 is embedded in the annular groove 53 and connected with the barrel 11. The packing box 6 and the outer peripheral wall of the barrel 11 are welded and connected. The welding connection makes the packing box 6 and the barrel 11 firmly connected, enhances the stability of the whole sealing device, ensures that the packing box 6 does not loosen or fall off during the operation of the equipment, and guarantees the sealing effect and normal operation of the equipment.

[0038] The nut 3 is rotated along the bolt 2 towards the barrel 11 to extrude the gland 4, the sealing element 5 and the packing box 6 on the barrel 11, and fix the liner plate 12 in the barrel 11.

[0039] When the device is assembled, one end of the bolt 2 penetrates the barrel 11 of the rod mill and is connected with the liner plate 12 in the barrel 11. The packing box 6 and the sealing element 5 are sleeved on the bolt 2 in sequence, the packing box 6 is embedded in the annular groove 53 of the sealing element 5, the threaded filler rib 52 on the hole wall of the mounting hole 51 cooperates with the bolt 2 to seal the gap between the bolt 2 and the mounting hole 51.

[0040] The gland 4 is sleeved on the other end of the bolt 2, and one side of the gland 4 is in contact with the nut 3, and the other side is in contact with the sealing element 5 close to one side of the gland 4.

[0041] The nut 3 is threadedly connected to the other end of the bolt 2, and the nut 3 is rotated to rotate along the bolt 2 towards the cylinder 11, and at the same time, the gland 4 and the sealing element 5 are extruded, and the packing box 6 is extruded on the cylinder 11, and further the liner plate 12 is fixed in the cylinder 11.

[0042] Finally, the connection part of the packing box 6 and the cylinder 11 is welded to ensure that the packing box 6 and the cylinder 11 are firmly connected.

[0043] In addition, during installation, by tightening the nut 3, the gland 4 generates pressure on the sealing element 5 from top to bottom and side, preliminarily fixes the bolt 2, and prevents it from tilting. That is, no matter which direction the bolt 2 tilts, the sealing element 5 can tightly hold the packing box 6 and the bolt 2, reducing the occurrence of leakage.

[0044] The application realizes effective fixation of the rod mill liner plate 12, ensures the stability of the liner plate 12 in the cylinder 11, improves the sealing performance of the device through the thread filling ribs 52 of the sealing element 5 and the extrusion fit of each part, prevents dust, liquid and the like from entering the cylinder 11, protects the working environment in the cylinder 11, and reduces equipment wear.

[0045] Moreover, by simply rotating the nut 3 along the bolt 2, the gland 4, the sealing element 5 and the packing box 6 can be extruded on the cylinder 11, and the liner plate 12 is firmly fixed in the cylinder 11. This connection method is simple to operate, and reduces the difficulty and cost of installation and maintenance.

[0046] In addition, the cooperation between each part enhances the stability of the connection, ensures that the liner plate 12 can still maintain a fixed position under the harsh working conditions of high-speed rotation of the rod mill and impact of the material, and guarantees stable operation of the equipment.

[0047] In an embodiment, as shown in Figure 3 the thread filling ribs 52 are provided in plurality. When the sealing element 5 is sleeved on the bolt 2, the plurality of thread filling ribs 52 threadedly cooperate with the bolt 2, further enhancing the sealing effect.

[0048] The application can better fill the gap between the bolt 2 and the mounting hole 51 through the plurality of thread filling ribs 52, enhance the sealing performance, reduce the possibility of leakage, and improve the reliability and service life of the equipment.

[0049] In an embodiment, as shown in Figure 3As shown, the inner wall of the mounting hole 51 is provided with an annular groove 41 to form a deformation absorption groove 54 between any two adjacent threaded filling ribs 52.

[0050] In this embodiment, the annular groove 41 on the inner wall of the mounting hole 51 is used to absorb the deformation of the bolt 2 and is located between adjacent threaded filling ribs 52. When the bolt 2 deforms due to stress or temperature changes, the deformation absorption groove 54 can accommodate such changes by deforming itself.

[0051] Specifically, when the nut 3 rotates and presses each component, the bolt 2 may deform due to stress, and at this time, the deformation absorption groove 54 can absorb the deformation of the bolt 2 to prevent damage to the sealing element 5, gland 4, and other components caused by the deformation of the bolt 2.

[0052] The present application can adapt to the deformation of the bolt 2 by providing the deformation absorption groove 54, thereby improving the stability and durability of the device, avoiding sealing failure or component damage caused by the deformation of the bolt 2, and prolonging the service life of the equipment.

[0053] In one embodiment, as shown in Figure 1 and Figure 3 As shown, the hole wall of the mounting hole 51 and the inner wall of the annular groove 53 form a first end 55, the outer wall of the annular groove 53 and the outer wall of the sealing element 5 form a second end 56, the bottom surface of the second end 56 is higher than the bottom surface of the gland 4, and the bottom surface of the first end 55 is lower than the bottom surface of the second end 56.

[0054] In this embodiment, during the process of rotating the nut 3 to press the gland 4, sealing element 5, and packing box 6, due to the structure that the bottom surface of the second end 56 is higher than the bottom surface of the gland 4 and the bottom surface of the first end 55 is lower than the bottom surface of the second end 56, the stress distribution of each part of the sealing element 5 is more reasonable when it is pressed, thereby enhancing the sealing effect.

[0055] The present application optimizes the stress condition of the sealing element 5 by the first end 55 and the second end 56, so that the sealing element 5 can better play a sealing role during the pressing process, further improving the sealing performance of the device, while also helping to maintain the shape and stability of the sealing element 5, thereby prolonging its service life.

[0056] In one embodiment, as shown in Figure 1 As shown, the end of the bolt 2 connected to the lining plate 12 is provided with a limiting column 21, and the diameter of the limiting column 21 decreases from the end away from the cylinder 11 to the end close to the cylinder 11.

[0057] In the embodiment, the limiting column 21 is a component for limiting the position of the liner plate 12, which is arranged at the connecting end of the bolt 2 and the liner plate 12, and has a large diameter at one end and a small diameter at the other end. When the bolt 2 is connected with the liner plate 12, the limiting column 21 is inserted into the corresponding hole of the liner plate 12 to limit the position of the liner plate 12.

[0058] The application improves the accuracy and stability of the installation of the liner plate 12 by arranging the limiting column 21, prevents the displacement or shaking of the liner plate 12 in the cylinder 11, ensures the normal operation and grinding effect of the rod mill, and reduces the damage to the equipment caused by the loosening of the liner plate 12.

[0059] In summary, when installing, the bolt 2 with the limiting column 21 is inserted through the liner plate 12 in the cylinder 11 of the rod mill, and the limiting column 21 plays a positioning role to prevent the liner plate 12 from being offset during installation.

[0060] First, the packing box 6 is sleeved on the bolt 2, and then the sealing element 5 with the threaded filler rib 52 and the annular groove 53 is sleeved on the other end of the bolt 2 through the mounting hole 51. The threaded filler rib 52 is engaged with the threads of the bolt 2 to preliminarily seal the gap between them. At the same time, the packing box 6 is embedded in the annular groove 53 of the sealing element 5, and then the packing box 6 is connected with the cylinder 11 of the rod mill through the welding process to ensure firm connection.

[0061] Then, the gland 4 made of metal material is sleeved on the same end of the bolt 2, so that one side of the gland 4 is in contact with the nut 3, and the other side of the recess 41 is tightly fitted with the side of the sealing element 5 close to the gland 4.

[0062] Finally, the nut 3 is rotated to move along the bolt 2 towards the cylinder 11, the nut 3 pushes the gland 4, and the sealing element 5 and the packing box 6 are sequentially extruded, and finally the liner plate 12 is firmly fixed in the cylinder 11.

[0063] In use, the rod mill grinds the internal materials after starting. In this process, the equipment will be vibrated, the temperature will change, and other factors will cause the bolt 2 to deform. At this time, the deformed absorption groove 54 plays a role in absorbing the deformation of the bolt 2 caused by stress or temperature change, preventing the deformation of the bolt 2 from damaging the sealing device and the connecting structure.

[0064] At the same time, the plurality of threaded filler ribs 52 continuously seal the gap between the bolt 2 and the mounting hole 51, preventing dust, liquid and other impurities from entering the cylinder 11, and maintaining a clean environment inside the equipment. In addition, the tight connection between the components formed by mutual extrusion continuously fixes the liner plate 12 in the cylinder 11, ensuring the stability of the liner plate 12 during the grinding process.

[0065] The above examples are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements are also considered to fall within the protection scope of the present application.

Claims

1. A rod mill liner bolt seal apparatus, characterized by, The utility model relates to a rod mill liner plate fixing device, comprising: a bolt, one end of which penetrates a barrel of the rod mill and is connected with a liner plate in the barrel; a nut, which is screwed on the other end of the bolt outside the barrel; a gland, which is sleeved on the other end of the bolt outside the barrel, one side of the gland being in contact with the nut and the other side of the gland being provided with a groove; a sealing element, which has a mounting hole, the sealing element being sleeved on the other end of the bolt through the mounting hole, the hole wall of the mounting hole being provided with a threaded filler rib to seal the gap between the bolt and the mounting hole, one side of the sealing element close to the gland being in contact with the inner wall of the groove and the other side of the sealing element surrounding the mounting hole being provided with an annular groove; a packing box, which is embedded in the annular groove and connected with the barrel; wherein the nut is rotated along the bolt towards the barrel to extrude the gland, the sealing element and the packing box on the barrel and fix the liner plate in the barrel.

2. The rod mill liner bolt seal apparatus as claimed in claim 1, wherein, The threaded filler rib is provided with a plurality of threaded filler ribs.

3. The rod mill liner bolt seal apparatus of claim 2, wherein, The inner wall of the mounting hole is provided with an annular groove to form a deformation absorption groove, the deformation absorption groove being arranged between any two adjacent threaded filler ribs.

4. The rod mill liner bolt seal apparatus as claimed in claim 1, wherein, The hole wall of the mounting hole and the inner wall of the annular groove form a first end portion, the outer wall of the annular groove and the outer wall of the sealing element form a second end portion, the bottom surface of the second end portion being higher than the bottom surface of the gland, and the bottom surface of the first end portion being lower than the bottom surface of the second end portion.

5. The rod mill liner bolt seal apparatus as claimed in claim 1, wherein, The bolt is provided with a limiting column on the end connected with the liner plate, the diameter of the limiting column decreasing from the end far away from the barrel to the end close to the barrel.

6. The rod mill liner bolt seal apparatus as claimed in claim 1, wherein, The packing box and the outer peripheral wall of the barrel are welded.

7. The rod mill liner bolt seal apparatus as claimed in claim 1, wherein, The gland is made of metal material, and the sealing element is made of rubber material.

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