Sealing structure for grinding roller door of vertical mill

Abstract

The utility model discloses a sealing structure for a grinding roller door of a vertical mill, which comprises a vertical mill grinding roller door seal, two sides of the vertical mill grinding roller door seal are arranged in a high-low step manner, the middle part of the vertical mill grinding roller door seal is arched, and the vertical mill grinding roller door seal is sealed through a hoop to form a sealing cavity wrapped on a grinding roller shaft; the vertical mill grinding roller door is sealed through the sealing flange and the hoop to form a sealing cavity wrapping the grinding roller shaft body, the sealing structure can meet the space requirements for thermal expansion and cold contraction of the vertical mill, front-back movement of the grinding roller shaft body in the working process and the like, and the sealing structure can be tightly attached to the vertical mill under the conditions of movement, deformation and the like; therefore, cylinder deformation, cylinder deflection and eccentricity of the vertical mill in a high-temperature use state are adapted, gapless sealing is realized, and air leakage and material leakage are avoided.

Description

Technical Field

[0001] The utility model relates to a sealing structure, in particular to a sealing structure for a roller door of a vertical mill. Background Art

[0002] At present, the sealing position of the roller door of the vertical mill in the cement industry is narrow and difficult to construct. The sealing material is easily damaged due to the high wind pressure and speed, material flushing, and frequent telescopic and reciprocating movements at this position. The exposed gap can easily cause the material or gas in the mill to leak to the outside of the environment, polluting the environment, increasing the maintenance cost of the vertical mill, and also increasing safety hazards. Utility Model Content

[0003] The utility model provides a sealing structure for a roller door of a vertical mill, which is used to overcome the defects in the prior art that the sealing element is easily damaged and the sealing performance is poor due to the working characteristics of the frequent telescopic and reciprocating motion of the vertical mill.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] The utility model discloses a sealing structure for a vertical mill roller door, comprising a vertical mill roller door seal, wherein the two sides of the vertical mill roller door seal are arranged in high and low steps, the middle part is arched, and the vertical mill roller door seal is sealed by a hoop to form a sealing cavity wrapped on the roller shaft.

[0006] Furthermore, the high step surface on the sealing side of the vertical mill roller door is clamped on the sealing flange at the vertical mill roller door through a clamp on its outer surface.

[0007] Furthermore, the low step surface on the other side of the vertical mill roller door seal is clamped on the grinding roller shaft through a clamp on its outer surface.

[0008] Furthermore, the vertical mill roller door seal fits tightly with the roller shaft, so that it can follow the axial movement of the roller shaft to achieve gapless sealing.

[0009] The beneficial effect achieved by the utility model is that the vertical mill roller door is sealed by the sealing flange and the clamp to form a sealed cavity wrapped around the grinding roller body. The sealing structure can adapt to the spatial requirements of the vertical mill due to thermal expansion and contraction, the forward and backward movement of the grinding roller shaft during operation, etc., and can maintain a close fit with the vertical mill under the conditions of movement and deformation, thereby adapting to the cylinder deformation, cylinder swing and eccentricity generated by the vertical mill under high-temperature use, achieving gapless sealing, and ensuring no air leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] In the figure: 1. Vertical mill roller door seal; 2. Clamp; 3. Sealing flange; 4. Grinding roller shaft. DETAILED DESCRIPTION

[0013] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0014] Example 1

[0015] like Figure 1 As shown, a sealing structure for a vertical mill roller door includes a vertical mill roller door seal 1, the two sides of the vertical mill roller door seal 1 are arranged in high and low steps, the middle part is arched, and the vertical mill roller door seal 1 is formed into a sealed cavity wrapped around the roller shaft 4 by a clamp 2.

[0016] The high step surface on one side of the vertical mill roller door seal 1 is clamped on the sealing flange 3 at the vertical mill roller door through the clamp 2 on its outer surface.

[0017] The low step surface on the other side of the vertical mill roller door seal 1 is clamped on the grinding roller shaft 4 through the clamping hoop 2 on its outer surface.

[0018] The vertical mill roller door seal 1 is tightly fitted with the roller shaft 4, so that it can follow the axial movement of the roller shaft 4 to achieve gapless sealing.

[0019] Working process: First, install the sealing flange 3 at the roller door of the vertical mill, and use the clamp 2 to clamp the higher sealing end to the sealing flange 3 through the high and low structure of the roller door seal 1 of the vertical mill. At the appropriate calibration position, clamp the lower end seal to the roller shaft 4 of the equipment with the clamp 2. The sealing flange 3 and the clamp 2 form a sealed cavity at the roller door of the vertical mill, which can prevent the gas from flowing inside and outside the vertical mill, and prevent the gas entering the sealing cover of the mill door from overflowing, and also isolate the cold air from the outside from entering the mill.

[0020] This sealing structure can adapt to the spatial requirements of the vertical mill due to thermal expansion and contraction, and the forward and backward movement of the grinding roller shaft during operation. It can maintain a close fit with the vertical mill during movement and deformation, thereby adapting to the cylinder deformation, cylinder swing and eccentricity caused by the vertical mill when used at high temperatures, achieving gapless sealing and ensuring no air leakage.

[0021] It should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein by equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention. The terms used in the description of this application are only for describing specific implementations, and are not intended to limit the exemplary implementations according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and devices known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and devices should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0022] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0023] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

Claims

1. A sealing structure for a vertical mill roller door, It is characterized in that The utility model comprises a vertical mill roller door seal, the two sides of which are arranged in steps of different heights, the middle part of which is arched, and the vertical mill roller door seal is sealed by a hoop to form a sealing cavity wrapped on the roller shaft.

2. The sealing structure for the roller door of a vertical mill according to claim 1, It is characterized in that The high step surface on the sealing side of the vertical mill roller door is clamped on the sealing flange at the vertical mill roller door through a clamp on its outer surface.

3. The sealing structure for the roller door of a vertical mill according to claim 1, It is characterized in that The low step surface on the other side of the vertical mill roller door seal is clamped on the grinding roller shaft through a clamp on its outer surface.

4. The sealing structure for a vertical mill roller door according to claim 1, It is characterized in that The vertical mill roller door seal is tightly fitted to the roller shaft body, so that it can follow the axial movement of the roller shaft body to achieve gapless sealing.

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