Sealing device for vertical mill

Abstract

The utility model relates to the technical field of vertical mills, aims to solve the problem of how to reduce material leakage, and provides a sealing device for a vertical mill. The sealing device for the vertical mill comprises a shaft sleeve, a sealing piece and a silica gel sealing sleeve. The shaft sleeve is arranged on the circumferential face of the grinding roller shaft, the circumferential face of the shaft sleeve and the wall plate are arranged at intervals, and the shaft sleeve extends out of the vertical mill through the through hole from the interior of the vertical mill. The sealing piece is arranged between the shaft sleeve and the wall plate and used for sealing a gap between the shaft sleeve and the wall plate. The silica gel sealing sleeve wraps the peripheral face of the sealing piece, the section of the silica gel sealing sleeve is in a wave shape, and the silica gel sealing sleeve extends in the axial direction of the grinding roller shaft. According to the sealing device for the vertical mill, the shaft sleeve is arranged on the circumferential face of the grinding roller shaft so as to improve the stability of the grinding roller shaft during rotation, the sealing piece is arranged between the shaft sleeve and the wall plate for sealing, the circumferential face of the sealing piece is wrapped with the silica gel sealing sleeve, the section of the silica gel sealing sleeve is in a wavy shape, and therefore the sealing effect is improved. And the effect of reducing material leakage is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vertical mill, in particular to a sealing device for vertical mill. BACKGROUND

[0002] The vertical roller mill, referred to as vertical mill for short, has a material layer grinding principle, that is, the material is ground by mutual extrusion between particles, and the grinding process is controllable and has high grinding efficiency.

[0003] In the prior art, when the vertical mill is working, the mill roller shaft is prone to vibration during rotation, which causes the material to leak from the mill roller shaft to the outside of the vertical mill. How to solve the above technical problem is a consideration for those skilled in the art. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a sealing device for vertical mill to solve the problem of reducing material leakage.

[0005] The embodiment of the present application provides a sealing device for vertical mill, the vertical mill comprising a wall plate and a mill roller shaft, the wall plate being provided with a through hole, and the mill roller shaft extending from the inside of the vertical mill to the outside of the vertical mill through the through hole. The sealing device for vertical mill comprises a shaft sleeve, a sealing element and a silica gel sealing sleeve. The shaft sleeve is arranged on the peripheral surface of the mill roller shaft, the peripheral surface of the shaft sleeve is arranged in space with the wall plate, and the shaft sleeve extends from the inside of the vertical mill to the outside of the vertical mill through the through hole. The sealing element is arranged between the shaft sleeve and the wall plate, and is used for sealing the gap between the shaft sleeve and the wall plate. The silica gel sealing sleeve is wrapped around the peripheral surface of the sealing element, the cross-sectional shape of the silica gel sealing sleeve is wavy, and the silica gel sealing sleeve extends along the axial direction of the mill roller shaft.

[0006] Compared with the prior art, the sealing device for vertical mill provided by the embodiment improves the stability of the mill roller shaft during rotation by arranging the shaft sleeve on the peripheral surface of the mill roller shaft, seals the gap between the shaft sleeve and the wall plate by arranging the sealing element therebetween, and wraps the silica gel sealing sleeve around the peripheral surface of the sealing element, so that the silica gel sealing sleeve is beneficial to reducing the impact of mill roller shaft vibration, reducing the impact of mill roller shaft vibration on the sealing element, and enabling the sealing element to stably seal the gap between the shaft sleeve and the wall plate, thereby achieving the effect of reducing material leakage.

[0007] In a possible implementation, the sealing element comprises a sealing layer, the sealing layer is arranged between the shaft sleeve and the wall plate, one end of the sealing layer is arranged on the outside of the vertical mill and is attached to the peripheral surface of the shaft sleeve, and the other end of the sealing layer extends to the inside of the vertical mill through the through hole and is attached to the peripheral edge of the through hole.

[0008] In a possible implementation manner, the sealing member further includes a sealing tape, which is wound around the circumference of the sealing layer.

[0009] In a possible embodiment, the seal further includes a static sealing ring and a dynamic sealing ring. The static sealing ring is provided at one end of the sealing belt close to the wall panel, and the dynamic sealing ring is provided at the other end. One end of the silicone sealing sleeve is connected to the dynamic sealing ring, and the other end is connected to the static sealing ring.

[0010] In a possible implementation manner, the sealing device for a vertical mill further includes a material stopper, and the material stopper is provided at one end of the sealing layer close to the interior of the vertical mill.

[0011] In a possible implementation, the material blocking member includes a material blocking plate, one end of which is connected to the shaft sleeve and the other end of which extends along the surface of the sealing layer.

[0012] In a possible embodiment, the material blocking member further includes a dustproof plate, which is connected to the extended end of the material blocking plate and protrudes from the wall panel toward the interior of the vertical mill.

[0013] In a possible implementation manner, the material blocking member further includes a reinforcing rib, one end of the reinforcing rib is connected to the dustproof plate, and the other end of the reinforcing rib is connected to the wall panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a three-dimensional schematic diagram of a sealing device for a vertical mill according to an embodiment of the present application;

[0016] Figure 2 for Figure 1 A three-dimensional schematic diagram of the other side of the sealing device for the vertical mill;

[0017] Figure 3 for Figure 1 A schematic structural diagram of a sealing device for a vertical mill;

[0018] Figure 4 for Figure 3 A partial enlarged view of area A of the sealing device for a vertical mill.

[0019] Description of main component symbols:

[0020] 1. A sealing device for a vertical mill; 11. a shaft sleeve; 12. a sealing element; 121. a sealing layer; 122. a sealing strip; 123. a sealing static ring; 124. a sealing dynamic ring; 125. an inner ring; 13. a silica gel sealing sleeve; 14. a material blocking element; 141. a material blocking plate; 142. a dustproof plate; 143. a reinforcing rib; 2. a wall plate; 3. a mill roller shaft; 4. an interior of the vertical mill; 5. an exterior of the vertical mill. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0022] Some embodiments of the present application are described in detail. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0023] EMBODIMENT

[0024] Please refer to Figures 1 to 4 As shown in the drawings, the present embodiment provides a sealing device 1 for a vertical mill, the vertical mill comprising a wall plate 2 and a mill roller shaft 3, the wall plate 2 being provided with a through hole, and the mill roller shaft 3 extending from an interior 4 of the vertical mill to an exterior 5 of the vertical mill through the through hole. The sealing device 1 for the vertical mill comprises a shaft sleeve 11, a sealing element 12 and a silica gel sealing sleeve 13. The shaft sleeve 11 is arranged on a circumferential surface of the mill roller shaft 3, the circumferential surface of the shaft sleeve 11 is arranged in a spaced manner with the wall plate 2, and the shaft sleeve 11 extends from the interior 4 of the vertical mill to the exterior 5 of the vertical mill through the through hole. The sealing element 12 is arranged between the shaft sleeve 11 and the wall plate 2, and the sealing element 12 is used to seal a gap between the shaft sleeve 11 and the wall plate 2. The silica gel sealing sleeve 13 is wrapped around a circumferential surface of the sealing element 12, the cross-sectional shape of the silica gel sealing sleeve 13 is wavy, and the silica gel sealing sleeve 13 extends along an axial direction of the mill roller shaft 3.

[0025] The sealing device 1 for the vertical mill provided by the present embodiment improves the stability of the mill roller shaft 3 during rotation by arranging the shaft sleeve 11 on the circumferential surface of the mill roller shaft 3, seals the gap between the shaft sleeve 11 and the wall plate 2 by arranging the sealing element 12 therebetween, and wraps the silica gel sealing sleeve 13 around the circumferential surface of the sealing element 12, the cross-sectional shape of the silica gel sealing sleeve 13 is wavy, so that the silica gel sealing sleeve 13 is beneficial to reduce the impact of vibration of the mill roller shaft 3, thereby reducing the impact of vibration of the mill roller shaft 3 on the sealing element 12, and enabling the sealing element 12 to stably seal the shaft sleeve 11 and the wall plate 2, so as to reduce material leakage.

[0026] In a possible implementation, the sealing member 12 comprises a sealing layer 121, which is arranged between the bushing 11 and the wall plate 2, and has one end arranged at the outside 5 of the vertical mill and abutting against the peripheral surface of the bushing 11, and the other end extending to the inside 4 of the vertical mill through the through hole and abutting against the peripheral edge of the through hole.

[0027] In the embodiment, the sealing layer 121 is made of high-temperature sealing filler, and has good heat resistance. When heat generated by rotation of the mill roller shaft 3 is transferred to the bushing 11, the sealing layer 121 is less deformed by the heat, so that the sealing layer 121 stably seals the gap between the bushing 11 and the wall plate 2, and reduces leakage of the material from the gap.

[0028] In a possible implementation, the sealing member 12 further comprises a sealing band 122, which is wound around the peripheral surface of the sealing layer 121.

[0029] In the embodiment, the sealing band 122 is arranged on the side of the wall body close to the outside 5 of the vertical mill, and is wound around multiple layers to seal the sealing layer 121 and the wall body, and reduce leakage of the material from the sealing layer 121 and the wall body.

[0030] In a possible implementation, the sealing member 12 further comprises an inner ring 125, a sealing static ring 123, and a sealing dynamic ring 124. The sealing band 122 has one end provided with the sealing static ring 123 and the other end provided with the sealing dynamic ring 124. The inner ring is arranged between the sealing static ring 123 and the sealing dynamic ring 124. The silica gel sealing sleeve 13 has one end connected to the sealing dynamic ring 124 and the other end connected to the sealing static ring 123.

[0031] In the embodiment, the sealing static ring 123, the inner ring 125, and the sealing dynamic ring 124 enclose a groove, and the sealing band 122 is arranged in the groove. The sealing static ring 123, the inner ring 125, and the sealing dynamic ring 124 are conducive to fixing the sealing band 122, so that the sealing band 122 seals the sealing layer 121 and the wall body, and reduces leakage of the material from the sealing layer 121 and the wall body.

[0032] The silica gel sealing sleeve 13 has one end connected to the sealing dynamic ring 124 and the other end connected to the sealing static ring 123, so that the silica gel sealing sleeve 13 stably wraps around the peripheral surface of the sealing band 122, and reduces displacement of the silica gel sealing sleeve 13 caused by vibration. The cross-sectional shape of the silica gel sealing sleeve 13 is wavy, so as to buffer the vibration of the mill roller shaft 3, reduce the impact of the vibration of the mill roller shaft 3 on the sealing member 12, and enable the sealing member 12 to stably seal the bushing 11 and the wall plate 2, thereby reducing leakage of the material.

[0033] In a possible implementation, the sealing device 1 for the vertical mill further comprises a material blocking member 14, which is arranged at one end of the sealing layer 121 close to the inside 4 of the vertical mill.

[0034] In the embodiment, the material blocking piece 14 is used to block the material from contacting the sealing layer 121, reduce the wear of the sealing layer 121, and facilitate the sealing layer 121 to seal the shaft sleeve 11 and the wall plate 2.

[0035] In a possible implementation, the material blocking piece 14 includes a material blocking plate 141, one end of the material blocking plate 141 is connected with the shaft sleeve 11, and the other end of the material blocking plate 141 extends along the surface of the sealing layer 121.

[0036] In the embodiment, the material blocking plate 141 extends along the radial direction of the grinding roller shaft 3, and the material blocking plate 141 is attached to the sealing layer 121 to protect the sealing layer 121, thereby blocking the material from contacting the sealing layer 121, reducing the wear of the sealing layer 121, and facilitating the sealing layer 121 to seal the shaft sleeve 11 and the wall plate 2.

[0037] In a possible implementation, the material blocking piece 14 further includes a dustproof plate 142, the dustproof plate 142 is connected with the end of the material blocking plate 141, and the dustproof plate 142 protrudes from the wall plate 2 towards the interior 4 of the vertical mill.

[0038] In the embodiment, the dustproof plate 142 extends along the axial direction of the grinding roller shaft 3, and the dustproof plate 142 is attached to the end of the sealing layer 121 to protect the sealing layer 121, thereby blocking the material from contacting the sealing layer 121, reducing the wear of the sealing layer 121, and facilitating the sealing layer 121 to seal the shaft sleeve 11 and the wall plate 2.

[0039] In a possible implementation, the material blocking piece 14 further includes a reinforcing rib 143, one end of the reinforcing rib 143 is connected with the dustproof plate 142, and the other end of the reinforcing rib 143 is connected with the wall plate 2.

[0040] In the embodiment, the reinforcing rib 143 is used to improve the strength of the dustproof plate 142 and reduce the deformation of the material blocking piece 14, thereby facilitating the material blocking piece 14 to block the material from contacting the sealing layer 121, reduce the wear of the sealing layer 121, and facilitate the sealing layer 121 to seal the shaft sleeve 11 and the wall plate 2.

[0041] In summary, the sealing device 1 for the vertical mill provided in the embodiment improves the stability of the grinding roller shaft 3 during rotation by arranging the shaft sleeve 11 on the peripheral surface of the grinding roller shaft 3, seals the shaft sleeve 11 and the wall plate 2 by arranging the sealing piece 12 between the shaft sleeve 11 and the wall plate 2, and reduces the impact of the vibration of the grinding roller shaft 3 by wrapping the silicone sealing sleeve 13 around the peripheral surface of the sealing piece 12, so that the silicone sealing sleeve 13 facilitates reducing the impact of the vibration of the grinding roller shaft 3 on the sealing piece 12, and the sealing piece 12 stably seals the shaft sleeve 11 and the wall plate 2 to reduce the material leakage.

[0042] The above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application, and although the present application is explained in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or equivalent replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A sealing device for a vertical mill, wherein the vertical mill comprises a wall panel and a grinding roller shaft, wherein the wall panel has a through hole, and the grinding roller shaft extends from the interior of the vertical mill through the through hole to the exterior of the vertical mill, characterized in that: The sealing device for the vertical mill comprises: a shaft sleeve, provided on the circumferential surface of the grinding roller shaft, the circumferential surface of the shaft sleeve being spaced apart from the wallboard, and the shaft sleeve extending from the interior of the vertical mill through the through hole to the exterior of the vertical mill; a sealing member disposed between the shaft sleeve and the wall panel, the sealing member being used to seal the gap between the shaft sleeve and the wall panel; The silicone sealing sleeve is wrapped around the circumference of the sealing component, the cross-section of the silicone sealing sleeve is wavy, and the silicone sealing sleeve extends along the axial direction of the grinding roller shaft.

2. The sealing device for a vertical mill according to claim 1, characterized in that: The sealing member includes a sealing layer, which is arranged between the shaft sleeve and the wall panel. One end of the sealing layer is arranged outside the vertical mill and fits with the circumferential surface of the shaft sleeve, and the other end extends through the through hole to the interior of the vertical mill and fits with the circumference of the through hole.

3. The sealing device for a vertical mill according to claim 2, characterized in that: The sealing member further includes a sealing tape, which is wound around the circumference of the sealing layer.

4. The sealing device for a vertical mill according to claim 3, characterized in that: The sealing member also includes an inner ring, a static sealing ring and a dynamic sealing ring. The static sealing ring is provided at one end of the sealing belt close to the wall panel, and the dynamic sealing ring is provided at the other end. The inner ring is provided between the static sealing ring and the dynamic sealing ring. One end of the silicone sealing sleeve is connected to the dynamic sealing ring, and the other end is connected to the static sealing ring.

5. The sealing device for a vertical mill according to claim 2, characterized in that: The sealing device for the vertical mill further comprises a material stopper, which is arranged at one end of the sealing layer close to the interior of the vertical mill.

6. The sealing device for a vertical mill according to claim 5, characterized in that: The material blocking member includes a material blocking plate, one end of which is connected to the shaft sleeve and the other end of which extends along the surface of the sealing layer.

7. The sealing device for a vertical mill according to claim 6, characterized in that: The material blocking member further includes a dustproof plate, which is connected to the end of the extended end of the material blocking plate. The dustproof plate protrudes from the wall plate toward the interior of the vertical mill.

8. The sealing device for a vertical mill according to claim 7, characterized in that: The material blocking member further includes a reinforcing rib, one end of which is connected to the dustproof plate, and the other end of which is connected to the wall panel.

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