Sealing protection structure for tensioning steel wire rope of hydraulic system of coal mill

Abstract

The utility model discloses a coal mill hydraulic system tensioning steel wire rope sealing protection structure which is characterized in that a steel wire rope is arranged in a guide pipe in a penetrating manner, one end of the steel wire rope is connected with a pressing frame of a coal mill, the other end of the steel wire rope is connected with the end part of a hydraulic oil cylinder, and the sealing protection structure comprises a steel wire rope protection sleeve arranged outside the steel wire rope; the steel wire rope protective sleeve is fixed outside the steel wire rope through a clamping mechanism; a sealing mechanism for sealing a space between the end part of the guide pipe and the steel wire rope is arranged at the upper end of the guide pipe; the steel wire rope protection sleeve is arranged on the outer side of the steel wire rope, the problem that the steel wire rope is scoured by pulverized coal, and therefore the service life of the steel wire rope is prolonged can be effectively solved, operators are safer, the sealing mechanism can prevent pulverized coal ground in the mill from leaking into air through the guide pipe, and safety of the operation environment is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mills, in particular to a sealing and protective structure for tightening a steel wire rope of a hydraulic system of a coal mill. Background Art

[0002] The EM medium-speed ball mill can be used to grind coal, petroleum coke, gypsum, limestone, bentonite, clay, phosphate, and other minerals. During mill operation, raw materials enter the mill through the feed pipe at the top center. The ground materials are dried by hot air entering through the nozzle ring and conveyed to a separator. Unqualified large particles fall back into the grinding area and are ground again until the desired particle size is achieved. Qualified coal powder is then conveyed through the separator to a dust collector. The raw material flow and the process hot air flow generally run in opposite directions. Due to the high internal temperature of the mill, increasing the air speed to improve output is often employed. This high air speed can accelerate wire rope wear, necessitating frequent on-site inspection and replacement of the wire rope. Utility Model Content

[0003] Technical purpose: In view of the shortcomings of existing mills, the utility model discloses a coal mill hydraulic system tensioning wire rope sealing protection structure that can effectively protect the wire rope.

[0004] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution:

[0005] A sealing and protective structure for a tensioned wire rope in a hydraulic system of a coal mill, wherein the wire rope is passed through a guide tube, one end of which is connected to a pressure frame of the coal mill, and the other end is connected to the end of a hydraulic cylinder. The sealing and protective structure includes a wire rope protective sleeve arranged on the outside of the wire rope, and the wire rope protective sleeve is fixed to the outside of the wire rope by a clamping mechanism. A sealing mechanism is provided at the upper end of the guide tube for sealing the space between the end of the guide tube and the wire rope.

[0006] Preferably, the steel wire rope protective cover of the present invention comprises two protective sheets with a semicircular cross section, which are sleeved on the outside of the steel wire rope and fixed together by a clamping mechanism.

[0007] Preferably, the clamping mechanism of the present invention comprises U-shaped pipe clamps symmetrically arranged about the center of the wire rope, and the U-shaped pipe clamps are locked and fixed by bolts.

[0008] Preferably, the sealing mechanism of the present invention includes a pressure cover, a sealing ring and a lower plate. The lower plate is arranged at the end of the guide tube, and the sealing ring is located between the pressure cover and the lower plate. The end of the guide tube is sealed by a labyrinth sealing structure formed between the contact surfaces of the pressure cover, the sealing ring and the lower plate.

[0009] Preferably, the lower plate of the present invention is provided with a countersunk hole matching with the guide tube on the surface close to the end of the guide tube, and is sleeved on the outer side of the guide tube through the countersunk hole.

[0010] Beneficial effects: The utility model provides a sealing and protective structure for tightening the wire rope of the hydraulic system of a coal mill. A wire rope protective cover is arranged on the outside of the wire rope, which can effectively solve the problem of the wire rope being washed by coal powder, thereby increasing the service life of the wire rope and making the operator safer. The sealing mechanism can prevent the ground coal powder inside the mill from leaking into the air through the guide pipe, thereby protecting the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0012] Figure 1 This is the main view of the overall structure of the utility model;

[0013] Figure 2 This is a top view of the overall structure of the utility model;

[0014] Among them, 1-wire rope, 2-guide tube, 3-wire rope protection cover, 4-U-shaped pipe clamp, 5-pressure cover, 6-sealing ring, 7-lower plate. DETAILED DESCRIPTION

[0015] Reference will now be made in detail to the embodiments of the present disclosure, one or more examples of which are set forth herein below. Each embodiment and example is provided by way of explanation of the apparatus, composition and materials of the present disclosure, and not by way of limitation. On the contrary, the following description provides a convenient illustration of exemplary embodiments for implementing the present disclosure. In fact, it will be clear to those skilled in the art that various modifications and variations can be made in the teachings of the present disclosure without departing from the scope or spirit of the present disclosure. For example, a feature shown or described as part of one embodiment may be used in conjunction with another embodiment to produce yet another embodiment. It is expected that the present disclosure covers such modifications and variations that fall within the scope of the appended claims and their equivalents. Other objects, features and aspects of the present disclosure are disclosed in or apparent from the following detailed description. It will be understood by those of ordinary skill in the art that this discussion is merely a description of exemplary embodiments and is not intended to limit the broader aspects of the present disclosure.

[0016] like Figure 1 and Figure 2As shown, the utility model discloses a sealing and protective structure for tensioning a steel wire rope of a coal mill hydraulic system, wherein the steel wire rope 1 is passed through a guide tube 2, one end of which is connected to a pressure frame of the coal mill, and the other end is connected to the end of a hydraulic cylinder. The steel wire rope 1 is pulled up and down in the guide tube 2 by the hydraulic cylinder, and the sealing and protective structure comprises a steel wire rope protective sleeve 3 arranged on the outside of the steel wire rope 1, and the steel wire rope protective sleeve 3 is fixed to the outside of the steel wire rope 1 by a clamping mechanism, and is used for protecting the outside of the steel wire rope 1, so as to reduce the wear of the steel wire rope caused by coal powder and improve its service life. A sealing mechanism is provided at the upper end of the guide tube 2 for sealing the space between the end of the guide tube 2 and the steel wire rope, and the sealing mechanism prevents the coal powder ground inside the mill from leaking into the air through the guide tube, thereby protecting the on-site working environment.

[0017] In order to facilitate the installation of the protective cover and reduce the difficulty of assembly, in a specific embodiment, the wire rope protective cover 3 of the present invention includes two protective sheets with a semicircular cross-section, which are sleeved on the outside of the wire rope 1 and fixed by a clamping mechanism. The steel pipe can be directly processed by splitting it in two from the center, thereby simplifying the processing difficulty of the structure; the clamping mechanism includes a U-shaped pipe clamp 4 symmetrically arranged about the center of the wire rope 1, and the U-shaped pipe clamps 4 are locked and fixed by bolts.

[0018] The sealing mechanism of the present invention is used to seal the end of the guide tube 2. The sealing mechanism includes a pressure cover 5, a sealing ring 6 and a lower plate 7. The lower plate 7 is arranged at the end of the guide tube 2, and the sealing ring 6 is located between the pressure cover 5 and the lower plate 7. The end of the guide tube 2 is sealed by a labyrinth sealing structure formed between the contact surfaces of the pressure cover 5, the sealing ring 6 and the lower plate 7; the lower plate 7 is provided with a countersunk hole matching the guide tube 2 on the surface close to the side where the end of the guide tube 2 is located, and is sleeved on the outside of the guide tube 2 through the countersunk hole, thereby sealing the four sides of the end of the guide tube 2 and further improving the sealing effect; for ease of assembly, the pressure cover 5 and the lower plate 7 can refer to the split structure of the protective cover and be locked and fixed by bolts for easy disassembly and assembly. By using the sealing protection structure of the present invention, the wire rope protective cover 3 can reduce the scouring loss of the wire rope, extend the service life of the equipment, and ensure the safety of the operator's operation.

Claims

1. A sealing and protective structure for tensioning a steel wire rope in a hydraulic system of a coal mill, wherein the steel wire rope (1) is passed through a guide tube (2), one end of the steel wire rope is connected to a press frame of the coal mill, and the other end is connected to the end of a hydraulic cylinder, characterized in that: The sealing protection structure comprises a wire rope protective sleeve (3) arranged outside the wire rope (1), wherein the wire rope protective sleeve (3) is fixed to the outside of the wire rope (1) by a clamping mechanism, and a sealing mechanism is provided at the upper end of the guide tube (2) for sealing the space between the end of the guide tube (2) and the wire rope.

2. A sealing and protective structure for tensioning steel wire ropes in a hydraulic system of a coal mill according to claim 1, characterized in that: The steel wire rope protective sleeve (3) comprises two protective sheets with a semicircular cross section, the protective sheets being sleeved on the outside of the steel wire rope (1) and being butted and fixed by a clamping mechanism.

3. A sealing and protective structure for tensioning steel wire ropes in a hydraulic system of a coal mill according to claim 1 or 2, characterized in that: The clamping mechanism comprises U-shaped pipe clamps (4) arranged symmetrically about the center of the wire rope (1), and the U-shaped pipe clamps (4) are locked and fixed by bolts.

4. The sealing and protective structure for tensioning steel wire ropes in a hydraulic system of a coal mill according to claim 1, characterized in that: The sealing mechanism comprises a gland (5), a sealing ring (6) and a lower plate (7); the lower plate (7) is arranged at the end of the guide tube (2); the sealing ring (6) is located between the gland (5) and the lower plate (7); and the end of the guide tube (2) is sealed by a labyrinth sealing structure formed between the contact surfaces of the gland (5), the sealing ring (6) and the lower plate (7).

5. A sealing and protective structure for tensioning steel wire ropes in a hydraulic system of a coal mill according to claim 4, characterized in that: The lower plate (7) is provided with a countersunk hole matching the guide tube (2) on the surface close to the end of the guide tube (2), and is sleeved on the outside of the guide tube (2) through the countersunk hole.

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