Vertical mill roller door sealing device and mounting structure thereof that are easy to install and disassemble

Abstract

The utility model relates to a vertical mill, in particular to a vertical mill roller door sealing device and its installation structure which are easy to install and disassemble. The sealing device is in a circular ring shape, and is a split structure, including a left semicircular sealing ring and a right semicircular sealing ring, and the left semicircular sealing ring and the right semicircular sealing ring both include an inner connecting part, a buffer part, an outer connecting part and an end connecting part; the cross section of the buffer part is corrugated or serpentine, and the inner connecting part and the outer connecting part are respectively located on both sides of the buffer part, and the inner connecting part and the outer connecting part are planar structures, and the inner connecting part and the outer connecting part are perpendicular to the axis of the left semicircular sealing ring and the right semicircular sealing ring, and the two ends of the left semicircular sealing ring and the right semicircular sealing ring are respectively provided with end connecting parts, and the end connecting part, the inner connecting part and the outer connecting part are all provided with connecting holes. The utility model is easy to install and disassemble, easy to repair and replace, shortens the maintenance time, improves the maintenance efficiency, increases the output, improves the sealing effect, has a short replacement cycle, a long service life, and reduces the maintenance cost.

Description

Technical Field

[0001] The utility model relates to a vertical mill, in particular to a vertical mill roller door sealing device and a mounting structure thereof which are convenient for installation and disassembly. Background Art

[0002] In the cement industry, vertical mills have been widely used. Vertical mills are also called roller mills. They are widely used in large-scale material grinding and ultra-fine grinding in cement, chemical, coal, electric power and other industries. The material falls to the center of the grinding disc through the feed pipe. The grinding disc rotating at a constant speed uses the centrifugal force to evenly disperse and flatten the raw materials outward to form a material bed of a specific thickness. The material is simultaneously crushed by multiple grinding rollers on the grinding disc and crushed. A seal is provided between the grinding roller door and the transmission arm of the vertical mill housing. Ordinary seals have the problems of poor sealing, easy damage, short replacement cycle and low service life. Most seals are difficult to disassemble and install, require a lot of labor, take a long time, and have low maintenance and replacement efficiency. The Chinese utility model with the authorization announcement number CN214305287U discloses a vertical mill grinding roller door sealing device. The utility model has a complex structure and is not easy to maintain. Utility Model Content

[0003] The utility model aims to solve the above technical problems, thereby providing a vertical mill roller door sealing device which is easy to install and disassemble, thereby improving the sealing effect and the maintenance efficiency.

[0004] The utility model solves the technical problem and adopts the following technical solution:

[0005] A vertical mill roller door sealing device that is easy to install and disassemble, the sealing device is in a circular ring shape, and the sealing device is a split structure, including a left semicircular sealing ring and a right semicircular sealing ring, and the left semicircular sealing ring and the right semicircular sealing ring each include an inner connecting portion, a buffer portion, an outer connecting portion and an end connecting portion;

[0006] The cross-section of the buffer portion is corrugated or serpentine, the inner connecting portion and the outer connecting portion are respectively located on both sides of the buffer portion, the inner connecting portion and the outer connecting portion are both planar structures, the inner connecting portion and the outer connecting portion are both perpendicular to the axes of the left semicircular sealing ring and the right semicircular sealing ring, and end connecting portions are respectively provided at both ends of the left semicircular sealing ring and the right semicircular sealing ring, and the end connecting portions, the inner connecting portion and the outer connecting portion are all provided with connecting holes.

[0007] Compared with the prior art, the utility model adopting the above technical solution has the following beneficial effects:

[0008] 1) The left semicircular sealing ring and the right semicircular sealing ring play the role of sealing, buffering and shock absorption;

[0009] 2) Easy installation and disassembly, convenient for maintenance and replacement, shortening maintenance time, improving maintenance efficiency and increasing production;

[0010] 3) Improve sealing effect, shorten replacement time, prolong service life and reduce maintenance costs.

[0011] Further, the optimization scheme of the utility model is:

[0012] The left semicircular sealing ring and the right semicircular sealing ring are made of polymer material.

[0013] The polymer material is rubber or polyurethane.

[0014] The end connecting parts of the left semicircular sealing ring and the right semicircular sealing ring are sealed and connected.

[0015] Adjacent surfaces of the two end connecting parts are respectively provided with tooth structures that match each other.

[0016] The left semicircular sealing ring and the right semicircular sealing ring are sleeved on the roller shaft between the grinding roller door and the transmission arm, the end connecting parts of the left semicircular sealing ring and the right semicircular sealing ring are connected by bolts, and the two inner connecting parts and the grinding roller door, and the two outer connecting parts and the transmission arm are connected respectively by connecting components.

[0017] The connecting assembly includes an inner connecting plate, an outer connecting plate and a pressure ring. The inner connecting plate, the outer connecting plate and the pressure ring are all circular and split structures. The inner connecting plate is fixedly connected to the grinding roller door, and a pressure ring is attached to the outer side surface of the inner connecting part. The pressure ring is connected to the inner connecting plate by bolts. The outer connecting plate is fixedly connected to the transmission arm, and a pressure ring is attached to the outer side surface of the outer connecting part. The pressure ring is connected to the outer connecting plate by bolts.

[0018] The two semicircular rings of the inner connecting plate and the outer connecting plate are sealed and connected.

[0019] The ring width of the inner connecting plate is smaller than the ring width of the outer connecting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the overall structure of an embodiment of the utility model;

[0021] Figure 2 It is a split schematic diagram of an embodiment of the utility model;

[0022] Figure 3 It is a front view of an embodiment of the utility model;

[0023] Figure 4 for Figure 3 A top view of

[0024] Figure 5 for Figure 3 Left view of

[0025] Figure 6 A connection diagram for connecting components.

[0026] In the figure: left semicircular sealing ring 1; inner connecting part 1-1; buffer part 1-2; outer connecting part 1-3; end connecting part 1-4; right semicircular sealing ring 2; inner connecting plate 3; outer connecting plate 4; pressure ring 5. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. Embodiment 1

[0029] See also Figure 1-Figure 5 The present embodiment provides a vertical mill roller door sealing device which is easy to install and disassemble. The sealing device is in a circular ring shape and is a split structure. It is composed of a left semicircular sealing ring 1 and a right semicircular sealing ring 2. The left semicircular sealing ring 1 and the right semicircular sealing ring 2 are made of polymer materials. In the present embodiment, rubber or polyurethane is preferably used. The left semicircular sealing ring 1 and the right semicircular sealing ring 2 are both integrally formed. The left semicircular sealing ring 1 and the right semicircular sealing ring 2 play the role of sealing, buffering and shock absorption.

[0030] The left semicircular sealing ring 1 is composed of an inner connecting portion 1-1, a buffer portion 1-2, an outer connecting portion 1-3 and an end connecting portion 1-4, and the structure of the right semicircular sealing ring 2 is the same as that of the left semicircular sealing ring 1. The cross section of the buffer portion 1-2 is corrugated or serpentine, and the inner connecting portion 1-1 and the outer connecting portion 1-3 are respectively located on both sides of the buffer portion 1-2. The inner connecting portion 1-1 and the outer connecting portion 1-3 are both planar structures, and the planes of the inner connecting portion 1-1 and the outer connecting portion 1-3 are both perpendicular to the axes of the left semicircular sealing ring 1 and the right semicircular sealing ring 2, and the inner connecting portion 1-1 and the outer connecting portion 1-3 both extend toward the outer arc surface of the buffer portion 1-2.

[0031] The left semicircular sealing ring 1 and the right semicircular sealing ring 2 are provided with end connection parts 1-4 at both ends, and the end connection parts 1-4 are located between the inner connection part 1-1 and the outer connection part 1-3, and the end connection parts 1-4 are integrally formed with the inner connection part 1-1 and the outer connection part 1-3. When in use, the adjacent surfaces of the two end connection parts 1-4 are sealed and connected. In order to increase the sealing effect, the adjacent surfaces of each end connection part 1-4 are respectively provided with tooth structures, and the tooth structures of the two matching surfaces cooperate with each other. The end connection part 1-4, the inner connection part 1-1 and the outer connection part 1-3 are all provided with connection holes, and the connection holes of the inner connection part 1-1 and the outer connection part 1-3 are arranged in an arc shape. Embodiment 2

[0032] The invention discloses an installation structure of a vertical mill roller door sealing device which is easy to install and disassemble, mainly consisting of a vertical mill shell, a roller door, a grinding roller, a roller shaft, a transmission arm and a sealing device. The vertical mill shell is provided with a grinding roller door, the grinding roller is placed on a grinding disc in the vertical mill shell, the grinding roller is rotatably connected to the inner end of the roller shaft, and the outer end of the roller shaft is connected to the transmission arm after passing through the roller door. A left semicircular sealing ring 1 and a right semicircular sealing ring 2 are sleeved on the roller shaft between the roller door and the transmission arm, and the end connection parts 1-4 of the left semicircular sealing ring 1 and the right semicircular sealing ring 2 are connected by bolts.

[0033] The two inner connecting parts 1-1 and the grinding roller door, and the two outer connecting parts 1-3 and the transmission arm are connected by connecting components, which are mainly composed of inner connecting plates 3, outer connecting plates 4 and pressure rings 5 ​​( Figure 6 As shown in the figure), the inner connecting plate 3, the outer connecting plate 4 and the pressure ring 5 are all annular and split structures, and the ring width of the inner connecting plate 3 is smaller than the ring width of the outer connecting plate 4. During the initial installation, the inner connecting plate 3 is welded to the grinding roller door, the outer connecting plate 4 is welded to the transmission arm, the two semicircular rings of the inner connecting plate 3 are sealed and welded, and the two semicircular rings of the outer connecting plate 4 are sealed and welded. A pressure ring 5 is attached to the outer side surface of the inner connecting portion 1-1 of the left semicircular sealing ring 1 and the right semicircular sealing ring 2, and the inner connecting plate 3, the inner connecting portion 1-1 and the pressure ring 5 are connected by bolts. When the inner connecting plate 3 is installed, the bolts are welded to the inner connecting plate 3. A pressure ring 5 is attached to the outer side surface of the outer connecting portion 1-3 of the left semicircular sealing ring 1 and the right semicircular sealing ring 2, and the outer connecting plate 4, the outer connecting portion 1-3 and the pressure ring 5 are connected by bolts. When the left semicircular sealing ring 1 and the right semicircular sealing ring 2 are repaired or replaced, the left semicircular sealing ring 1 and the right semicircular sealing ring 2 can be disassembled by simply removing the bolts or nuts. The disassembly and installation are convenient, which greatly shortens the maintenance time and improves the maintenance efficiency.

[0034] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A sealing device for a roller door of a vertical mill that is easy to install and disassemble, the sealing device is in a circular shape, and is characterized in that : The sealing device is a split structure, including a left semicircular sealing ring and a right semicircular sealing ring, and the left semicircular sealing ring and the right semicircular sealing ring both include an inner connecting part, a buffer part, an outer connecting part and an end connecting part; the cross-section of the buffer part is corrugated or serpentine, and the inner connecting part and the outer connecting part are respectively located on both sides of the buffer part, and the inner connecting part and the outer connecting part are both planar structures, and the inner connecting part and the outer connecting part are both perpendicular to the axis of the left semicircular sealing ring and the right semicircular sealing ring, and the left semicircular sealing ring and the right semicircular sealing ring are respectively provided with end connecting parts at both ends, and the end connecting part, the inner connecting part and the outer connecting part are all provided with connecting holes.

2. The sealing device for the roller door of a vertical mill that is easy to install and disassemble according to claim 1 is characterized in that The left semicircular sealing ring and the right semicircular sealing ring are made of polymer material.

3. The sealing device for the roller door of a vertical mill that is easy to install and disassemble according to claim 2 is characterized in that : The polymer material is rubber or polyurethane.

4. The sealing device for the roller door of a vertical mill that is easy to install and disassemble according to claim 1 is characterized in that : The end connection parts of the left semicircular sealing ring and the right semicircular sealing ring are sealed and connected.

5. The sealing device for the roller door of a vertical mill that is easy to install and disassemble according to claim 1 is characterized in that : The adjacent surfaces of the two end connecting parts are respectively provided with tooth structures that cooperate with each other.

6. An installation structure for a roller door sealing device of a vertical mill that is easy to install and disassemble, comprising a vertical mill housing, a roller door, a grinding roller, a roller shaft, a transmission arm, and a roller door sealing device of a vertical mill that is easy to install and disassemble according to any one of claims 1 to 5, wherein the vertical mill housing is provided with a roller door, the grinding roller is placed in the vertical mill housing and is rotatably connected to the roller shaft, and the outer end of the roller shaft passes through the roller door and is connected to the transmission arm, and is characterized in that: The left semicircular sealing ring and the right semicircular sealing ring are sleeved on the roller shaft between the grinding roller door and the transmission arm. The end connecting parts of the left semicircular sealing ring and the right semicircular sealing ring are connected by bolts, and the two inner connecting parts and the grinding roller door, and the two outer connecting parts and the transmission arm are connected by connecting components respectively.

7. The installation structure of the vertical mill roller door sealing device that is easy to install and disassemble according to claim 6 is characterized in that :The connecting assembly includes an inner connecting plate, an outer connecting plate and a pressure ring. The inner connecting plate, the outer connecting plate and the pressure ring are all circular and split structures. The inner connecting plate is fixedly connected to the grinding roller door, and a pressure ring is attached to the outer side surface of the inner connecting part. The pressure ring is connected to the inner connecting plate by bolts. The outer connecting plate is fixedly connected to the transmission arm, and a pressure ring is attached to the outer side surface of the outer connecting part. The pressure ring is connected to the outer connecting plate by bolts.

8. The installation structure of the vertical roller door sealing device that is easy to install and disassemble according to claim 7 is characterized in that : The two semicircular rings of the inner connecting plate and the outer connecting plate are sealed and connected.

9. The installation structure of the vertical roller door sealing device that is easy to install and disassemble according to claim 7 is characterized in that :The ring width of the inner connecting plate is smaller than the ring width of the outer connecting plate.

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