Adjustable air ring of cement vertical mill

Abstract

The utility model relates to the technical field of air rings, in particular to an adjustable air ring of a cement vertical mill, which comprises an air ring main body for providing airflow, a millstone for milling and a vertical mill inner shell, the air ring main body consists of an outer ring, an inner ring and a plurality of fixing plates, the fixing plates are welded on the inner side of the outer ring, the inner ring is welded on one side of the fixing plates, and the inner ring is welded on the other side of the fixing plates. A vertical mill inner shell with the inner wall arranged in a concave mode is tightly attached to the outer side of the outer ring, a millstone is attached to the inner side of the inner ring, a positioning block is fixedly connected to the outer side of the outer ring, a fixing block is fixedly connected into the outer ring, a through hole and a groove are formed in the fixing block, and a fixing piece is fixedly connected to the outer side of the outer ring. According to the air ring, through the arrangement of the movable fixing structure, when the air ring body is used for a long time, is seriously abraded and needs to be replaced, after the pressing block is moved and rotated, the air ring body can be detached, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of air rings, in particular to an adjustable air ring of a cement vertical mill. Background Art

[0002] Cement vertical mill is mainly used for the production of cement clinker grinding. Among them, the air ring structure is one of the important components of the vertical mill. It is an annular component installed between the inner shell of the vertical mill and the grinding disc. It brings the abrasive into the grinding disc for grinding by providing airflow. Its function is to carry the grinding disc and the grinding body, and at the same time provide abrasive, airflow and slag discharge channels to ensure the efficient and stable operation of the vertical mill.

[0003] When the cement vertical mill is working, the surface of the air ring is subjected to the friction and impact of the material for a long time, which will cause wear. After long-term use, the wear is serious. At this time, the air ring needs to be replaced. Due to its complex structure, it is difficult to install and maintain. Therefore, an adjustable air ring of the cement vertical mill is proposed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide an adjustable air ring for a cement vertical mill to solve the problem that the air ring is difficult to install and maintain.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The adjustable air ring of a cement vertical mill comprises an air ring main body for providing air flow, a grinding disc for grinding and an inner shell of a vertical mill, wherein the air ring main body consists of an outer ring, an inner ring and a plurality of fixed plates, a fixed plate is welded on the inner side of the outer ring, an inner ring is welded on one side of the fixed plate, the outer side of the outer ring is tightly fitted with the inner shell of the vertical mill with a concave inner wall, and the inner side of the inner ring is fitted with the grinding disc, a positioning block is fixedly connected to the outer side of the outer ring, a fixing block is fixedly connected to the inner side of the outer ring, a through hole and a groove are provided in the fixing block, a fixing piece is fixedly connected to the outer side of the outer ring, a moving rod is penetrated in the fixing piece, one end of the moving rod is fixedly connected to a pressing block, a spring is provided on the outer side of the moving rod, and a clamping block composed of a round cake in the middle and rectangular blocks on both sides is fixedly connected to the other end of the moving rod, a magnetic block is provided in the clamping block, and an electromagnet is provided in the fixing block.

[0007] Preferably, the fixing plate is a 5 mm thick alloy steel block, and the fixing plate is arranged between the outer ring and the inner ring.

[0008] Preferably, the positioning block is arranged in a T-shape, and the positioning block fits tightly with the recessed portion of the inner wall of the inner shell of the vertical mill.

[0009] Preferably, the through hole and the groove provided in the fixing block are arranged in communication with each other, and the through hole provided in the fixing block is arranged in a cylindrical shape in the middle and in a block shape at both sides.

[0010] Preferably, the fixing members are grouped into two and are rotatably connected to the moving rod, and the spring is arranged between the two fixing members.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, the wind ring body, outer ring, inner ring, fixing plate, grinding disc, vertical mill inner shell and positioning block are provided, so that the wind ring body has a positioning effect when being installed with the vertical mill inner shell. The fixing plate composed of a 5mm thick alloy spring steel block has the effect of reducing the wind loss of the wind ring, reducing the resistance of the circulating wind system and reducing the power consumption of the fan. Through the setting of the fixing block, fixing parts, spring, pressing block, moving rod, card block, groove and through hole, the user controls the pressing block through the hole and rotates it, and then releases the pressing block. Under the action of the spring elastic force The rectangular block of the card block and the groove in the fixed block can be made to fit tightly, so as to effectively fix the inner shell of the vertical mill and the air ring body. By means of the electromagnet arranged in the fixed block and the magnetic blocks arranged in the rectangular blocks on both sides of the card block, the user energizes the electromagnet to generate magnetic force and magnetic attraction between the magnetic blocks, so as to effectively fix the position of the card block. By means of the movable fixed structure, when the air ring body is used for a long time and is severely worn and needs to be replaced, the air ring body can be disassembled after moving and rotating the pressing block, which is convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 A schematic diagram of the structure at A;

[0015] Figure 3 This is a schematic diagram of the card block installation structure of the utility model.

[0016] In the figure: 1. air ring body; 101. outer ring; 102. inner ring; 103. fixed plate; 2. grinding disc; 3. vertical mill inner shell; 4. positioning block; 5. fixing block; 6. fixing piece; 7. spring; 8. pressing block; 9. moving rod; 10. clamping block; 11. groove; 12. through hole; 13. electromagnet; 14. magnetic block. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0019] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0020] See also Figure 1-3 , the utility model provides a technical solution:

[0021] An adjustable air ring for a cement vertical mill comprises an air ring body 1 for providing air flow, a grinding disc 2 for grinding and a vertical mill inner shell 3, the air ring body 1 is composed of an outer ring 101, an inner ring 102 and a plurality of fixing plates 103, the fixing plate 103 is welded on the inner side of the outer ring 101, the inner ring 102 is welded on one side of the fixing plate 103, the outer side of the outer ring 101 is tightly fitted with a vertical mill inner shell 3 with a concave inner wall, the inner side of the inner ring 102 is fitted with the grinding disc 2, the outer side of the outer ring 101 is fixedly connected with a positioning block 4, the inner side of the outer ring 101 is fixedly connected with a fixing block 5, and the fixing block 5 is provided with a through hole 1 2 and groove 11, the outer side of the outer ring 101 is fixedly connected with a fixing part 6, a moving rod 9 runs through the fixing part 6, one end of the moving rod 9 is fixedly connected with a pressing block 8, a spring 7 is arranged on the outer side of the moving rod 9, and the other end of the moving rod 9 is fixedly connected with a clamping block 10 which is arranged in a round cake in the middle and rectangular blocks on both sides, a magnetic block 14 is arranged in the clamping block 10, and an electromagnet 13 is arranged in the fixing block 5. Through the movable fixing structure, when the air ring main body 1 is used for a long time and the degree of wear is serious and needs to be replaced, the air ring main body 1 can be disassembled after moving and rotating the pressing block 8, and the operation is convenient.

[0022] The fixing plate 103 is a 5mm thick alloy steel block, which is arranged between the outer ring 101 and the inner ring 102, which can reduce the wind loss of the wind ring, reduce the resistance of the circulating wind system and reduce the power consumption of the fan; the positioning block 4 is arranged in a T shape, and the positioning block 4 and the recessed part of the inner wall of the vertical mill inner shell 3 fit tightly, so that the wind ring body 1 has a positioning effect during installation; the through hole 12 and the groove 11 opened in the fixing block 5 are arranged in communication, and the shape of the through hole 12 opened in the fixing block 5 is cylindrical in the middle and block-shaped on both sides, which is convenient for the fitting of the card block 10; the fixing parts 6 are two in a group and are rotatably connected to the moving rod 9, and the spring 7 is arranged between the two fixing parts 6. Make the moving rod 9 not affect each other during the movement and rotation process;

[0023] Working process: During the operation of the equipment, the external power supply is energized. When the adjustable air ring of the cement vertical mill is in use, first place the vertical mill in a suitable position. After long-term use, when the air ring body 1 is severely worn and needs to be replaced, the user turns off the power supply of the electromagnet 13, holds the pressing block 8 and presses it toward the inner ring 102 until the block 10 and the groove in the outer ring 101 for fixing the fixing block 5 fit tightly, the spring 7 is compressed, and then the pressing block 8 is rotated ninety degrees, the moving rod 9 rotates in the two fixing parts 6, the pressing block 8 is released, and driven by the elastic force of the spring 7, the block 10 drives the moving rod 9 to move in the opposite direction until the block 10 is taken out of the through hole 12 opened in the fixing block 5 and moved to the outer ring 101. At this time, The air ring body 1 is disassembled, and the positioning block 4 on the outside of the new air ring body 1 is aligned with the recessed part of the inner shell 3 of the vertical mill and inserted into it. Then, the pressing block 8 is held and pressed to make the clamping block 10 pass through the fixing block 5. Then, the pressing block 8 is rotated ninety degrees in the opposite direction until the rectangular block of the clamping block 10 and the groove 11 opened in the fixing block 5 fit tightly. At this time, the electromagnet 13 is energized to generate magnetic force and generate magnetic attraction between the magnetic block 14, so as to effectively fix the clamping block 10 and fix the air ring body 1 to the inner shell 3 of the vertical mill. Through the movable fixing structure, when the air ring body 1 is used for a long time and is severely worn and needs to be replaced, the air ring body 1 can be disassembled after moving and rotating the pressing block 8, which is convenient to operate.

[0024] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable air ring for a cement vertical mill, comprising an air ring body (1) for providing air flow, a grinding disc (2) for grinding, and a vertical mill inner shell (3), characterized in that: The air ring body (1) is composed of an outer ring (101), an inner ring (102) and a plurality of fixing plates (103); the fixing plate (103) is welded to the inner side of the outer ring (101); the inner ring (102) is welded to one side of the fixing plate (103); the outer side of the outer ring (101) is tightly fitted with an inner shell (3) of a vertical mill having a concave inner wall; the inner side of the inner ring (102) is fitted with a grinding disc (2); the outer side of the outer ring (101) is fixedly connected with a positioning block (4); the inner side of the outer ring (101) is fixedly connected with a fixing block (5); The fixing block (5) is provided with a through hole (12) and a groove (11); a fixing member (6) is fixedly connected to the outside of the outer ring (101); a moving rod (9) passes through the fixing member (6); one end of the moving rod (9) is fixedly connected to a pressing block (8); a spring (7) is provided on the outside of the moving rod (9); the other end of the moving rod (9) is fixedly connected to a clamping block (10) which is arranged in a circular shape in the middle and rectangular blocks on both sides; a magnetic block (14) is provided in the clamping block (10); and an electromagnet (13) is provided in the fixing block (5).

2. The adjustable air ring of a cement vertical mill according to claim 1, characterized in that: The fixing plate (103) is a 5 mm thick alloy steel block, and the fixing plate (103) is arranged between the outer ring (101) and the inner ring (102).

3. The adjustable air ring of a cement vertical mill according to claim 1 is characterized in that: The positioning block (4) is arranged in a T-shape, and the positioning block (4) is tightly fitted with a recessed portion of the inner wall of the vertical mill inner shell (3).

4. The adjustable air ring of a cement vertical mill according to claim 1, characterized in that: The through hole (12) and the groove (11) provided in the fixing block (5) are arranged in communication with each other. The through hole (12) provided in the fixing block (5) is arranged in a cylindrical shape in the middle and in a block shape on both sides.

5. The adjustable air ring of a cement vertical mill according to claim 1, characterized in that: The fixing members (6) are grouped in two and are rotatably connected to the moving rod (9), and the spring (7) is arranged between the two fixing members (6).

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