Raw material vertical mill pull rod seal

Abstract

The utility model relates to the technical field of vertical mill pull rod sealing, and discloses a raw material vertical mill pull rod seal which comprises a vertical roller, a pull rod is fixed on one side of the vertical roller, a sealing structure is arranged on one side of the vertical roller and comprises an inner sleeve arranged on the outer circle wall face of the pull rod, and the outer circle wall face of the inner sleeve is movably sleeved with an outer sleeve. A movable sealing base is fixed to the outer circle wall face of the outer sleeve. According to the utility model, through the arrangement of the sealing structure, the inner sleeve is welded and fixed on the protective sleeve of the pull rod to form secondary protection by measuring the protective sleeve of the pull rod, measuring the swing quantity of the pull rod in normal work and the lifting data of the upper and lower limits, and utilizing the inner sleeve and the outer sleeve, and the outer sleeve is welded and fixed on the movable sealing base to form secondary protection; therefore, in actual use, the limiting top plate is detached and replaced with the inner sleeve and the outer sleeve, the sleeve type seal is formed, cost is low, the structure is simple, and performance is good.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical mill tie rod seals, in particular to a raw material vertical mill tie rod seal. Background Art

[0002] There have been many air leakage and material leakage problems in the long-term operation of raw material vertical mills, especially the sealing between the tie rod and the mill body has not been effectively solved, which seriously affects the output of the mill and the power consumption of the process. At the same time, the air leakage problem aggravates the wear of the pressure frame, tie rod, anti-collision plate, etc. inside the mill, resulting in very large consumption.

[0003] There is an existing tie rod sealing structure for a raw material vertical mill (authorization announcement number CN212775586U) which has the following defects: the above-mentioned device improves the air leakage problem through an upper sealing structure and a lower sealing structure. However, the vertical mill tie rod usually requires a sealing bottom plate and a limiting top plate for auxiliary sealing when sealing. During use, the tie rod sealing bottom plate and the limiting top plate are prone to deformation and failure, which can easily cause leakage at the sealing point and create an environmental hazard. For this reason, we propose the utility model. Utility Model Content

[0004] The utility model aims to solve the problems existing in the prior art and provides a raw material vertical mill pull rod seal.

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

[0006] The raw material vertical mill rod seal comprises a vertical roller, a rod is fixed on one side of the vertical roller, a sealing structure is arranged on one side of the vertical roller, the sealing structure comprises an inner sleeve arranged on the outer circumferential wall surface of the rod, an outer sleeve is movably sleeved on the outer circumferential wall surface of the inner sleeve, and a movable sealing base is fixed on the outer circumferential wall surface of the outer sleeve.

[0007] Preferably, a protective sleeve is fixed to the outer circular wall surface of the pull rod, and the outer circular wall surface of the protective sleeve is fixed to the inner wall surface of the inner sleeve.

[0008] Preferably, the outer circular wall surface of the inner sleeve is provided with a plurality of mounting grooves, the inner circular wall surface of the outer sleeve is fixed with a plurality of mounting rings, the outer circular wall surface of the mounting ring is provided with a sealing groove, a sealing ring is fixed inside the mounting groove, the mounting ring is slidingly arranged inside the mounting groove, and the sealing ring is slidingly arranged inside the sealing groove.

[0009] Preferably, a bottom plate is fixed to the bottom surface of the movable sealing base.

[0010] Preferably, a plurality of limit blocks are fixed to the top surface of the bottom plate, the limit blocks are T-shaped, and one side of the limit blocks abuts against the top surface of the movable sealing base.

[0011] Preferably, expansion bolts are inserted into the four corners of the top surface of the base plate.

[0012] The beneficial effects of the utility model are:

[0013] The vertical mill rod seal, through the setting of the sealing structure, measures the rod protective cover and calculates the swing amount of the normally working rod and the lifting and lowering data of the upper and lower limits, uses the inner sleeve and the outer sleeve, welds the inner sleeve to the rod protective cover to form secondary protection at the same time, and welds the outer sleeve to the movable sealing base. Therefore, in actual use, the limit top plate is removed and replaced with the inner sleeve and the outer sleeve to form a sleeve type seal with low cost, simple structure and good performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the split structure proposed by the utility model;

[0016] Figure 3 This is a schematic diagram of the split structure of the protective cover proposed by the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the bottom plate proposed by the utility model;

[0018] Figure 5 The utility model proposed Figure 3 The enlarged structural diagram at A in the middle;

[0019] Figure 6 The utility model proposed Figure 3 Enlarged structural diagram at B in the middle.

[0020] In the figure: 1, vertical roller; 2, pull rod; 201, inner sleeve; 202, outer sleeve; 203, movable sealing base; 204, protective sleeve; 3, mounting groove; 301, mounting ring; 302, sealing groove; 303, sealing ring; 4, bottom plate; 5, limit block. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] 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.

[0023] Please see attached Figure 1 -Attached Figure 6 The raw material vertical mill tie rod seal comprises a vertical roller 1, a tie rod 2 is fixed on one side of the vertical roller 1, a sealing structure is arranged on one side of the vertical roller 1, the sealing structure comprises an inner sleeve 201 arranged on the outer circumferential wall surface of the tie rod 2, an outer sleeve 202 is movably sleeved on the outer circumferential wall surface of the inner sleeve 201, a movable sealing base 203 is fixed on the outer circumferential wall surface of the outer sleeve 202, and the movable sealing base 203 is the prior art.

[0024] In the embodiment, a protective sleeve 204 is fixed to the outer circular wall of the pull rod 2, and the outer circular wall of the protective sleeve 204 is fixed to the inner wall of the inner sleeve 201. By setting the sealing structure, by measuring the protective sleeve 204 of the pull rod 2 and calculating the swing amount of the normally working pull rod 2 and the lifting and lowering data of the upper and lower limits, the inner sleeve 201 and the outer sleeve 202 are used, and the inner sleeve 201 is welded and fixed to the protective sleeve 204 of the pull rod 2 to form secondary protection at the same time, and the outer sleeve 202 is welded and fixed to the movable sealing base 203. Therefore, in actual use, the limit top plate is removed and replaced with the inner sleeve 201 and the outer sleeve 202 to form a sleeve-type seal with low cost, simple structure and good performance.

[0025] In the embodiment, the outer circumferential wall surface of the inner sleeve 201 is provided with a plurality of mounting grooves 3, the inner circumferential wall surface of the outer sleeve 202 is fixed with a plurality of mounting rings 301, the outer circumferential wall surface of the mounting ring 301 is provided with a sealing groove 302, a sealing ring 303 is fixed inside the mounting groove 3, the mounting ring 301 is slidingly arranged inside the mounting groove 3, and the sealing ring 303 is slidingly arranged inside the sealing groove 302. Through the coordinated arrangement of the mounting groove 3, the mounting ring 301, the sealing groove 302 and the sealing ring 303, a simple labyrinth seal is formed between the inner sleeve 201 and the outer sleeve 202 to prevent the thrown material from entering the outer sleeve 202.

[0026] In the embodiment, a bottom plate 4 is fixed to the bottom surface of the movable sealing base 203, and the bottom plate 4 can provide a stable installation platform for the movable sealing base 203 during installation.

[0027] In the embodiment, a plurality of limit blocks 5 are fixed to the top surface of the bottom plate 4. The limit blocks 5 are T-shaped, and one side of the limit blocks 5 abuts against the top surface of the movable sealing base 203. The T-shaped limit blocks 5 can prevent the movable sealing base 203 from leaking upward when the roller is lifted normally.

[0028] In the embodiment, expansion bolts are inserted into the four corners of the top surface of the bottom plate 4. The expansion bolts are conventional technology, and the bottom plate 4 can be easily fixed by the expansion bolts.

[0029] Working principle: During use, the staff measures the protective sleeve 204 of the tie rod 2 and calculates the swing amount of the normal working tie rod 2 and the lifting data of the upper and lower limit positions, and uses the inner sleeve 201 and the outer sleeve 202 to weld the inner sleeve 201 to the protective sleeve 204 of the tie rod 2 to form secondary protection, and weld the outer sleeve 202 to the movable sealing base 203. In actual use, the limit top plate is removed and replaced with the inner sleeve 201 and the outer sleeve 202 to form a sleeve-type seal, which is installed through the installation groove 3 and the installation ring 3. 01. The sealing groove 302 and the sealing ring 303 are arranged in coordination to form a simple labyrinth seal between the inner sleeve 201 and the outer sleeve 202 to prevent the material from being thrown into the outer sleeve 202. The bottom plate 4 can provide a stable installation platform for the movable sealing base 203 during installation. The T-shaped limit block 5 can prevent the movable sealing base 203 from leaking upward when the roller is lifted normally. After the project is implemented, the grinding mill can start and stop and lift the grinding roller normally without any scratches, interference from other forces, or other abnormalities. There is no leakage of material or ash during operation or when the roller is lifted, eliminating environmental risks.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A rod seal for a raw material vertical mill, comprising a vertical roller (1), characterized in that: A pull rod (2) is fixed to one side of the vertical roller (1), and a sealing structure is provided on one side of the vertical roller (1). The sealing structure comprises an inner sleeve (201) provided on the outer circular wall surface of the pull rod (2), an outer sleeve (202) is movably sleeved on the outer circular wall surface of the inner sleeve (201), and a movable sealing base (203) is fixed to the outer circular wall surface of the outer sleeve (202).

2. The raw material vertical mill rod seal according to claim 1, characterized in that: A protective sleeve (204) is fixed to the outer circular wall surface of the pull rod (2), and the outer circular wall surface of the protective sleeve (204) is fixed to the inner wall surface of the inner sleeve (201).

3. The raw material vertical mill rod seal according to claim 2, characterized in that: The outer circular wall surface of the inner sleeve (201) is provided with a plurality of mounting grooves (3), the inner circular wall surface of the outer sleeve (202) is fixed with a plurality of mounting rings (301), the outer circular wall surface of the mounting ring (301) is provided with a sealing groove (302), a sealing ring (303) is fixed inside the mounting groove (3), the mounting ring (301) is slidably arranged inside the mounting groove (3), and the sealing ring (303) is slidably arranged inside the sealing groove (302).

4. The raw material vertical mill rod seal according to claim 3, characterized in that: A bottom plate (4) is fixed to the bottom surface of the movable sealing base (203).

5. The raw material vertical mill rod seal according to claim 4, characterized in that: A plurality of limit blocks (5) are fixed on the top surface of the bottom plate (4), wherein the limit blocks (5) are T-shaped, and one side of the limit blocks (5) abuts against the top surface of the movable sealing base (203).

6. The raw material vertical mill rod seal according to claim 5, characterized in that: Expansion bolts are inserted into the four corners of the top surface of the bottom plate (4).

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