High-reliability eccentric shaft steel sleeve for circular vibrating screen

Abstract

The utility model belongs to the technical field of preparation equipment, and particularly discloses a high-reliability eccentric shaft steel sleeve for a circular vibrating screen. A steel sleeve of the eccentric shaft steel sleeve is arranged on the eccentric shaft in a sleeving mode, and the two ends of the steel sleeve are detachably and fixedly connected with the bearing seats on the two sides in a sealed mode respectively. A plurality of transverse steel bars extending in the axial direction are fixed to the outer wall of the steel sleeve in the circumferential direction at intervals, and the portions, between the transverse steel bars, of the outer wall of the steel sleeve are filled with abrasion-resistant coatings. The plurality of transverse steel bars are arranged on the outer wall of the steel sleeve, and the wear-resistant coating is filled on the outer wall of the steel sleeve among the transverse steel bars, so that a wear-resistant protective layer is formed on the outer wall of the steel sleeve, the steel sleeve is not worn by ores when the circular vibrating screen is used for screening, and the running reliability of the circular vibrating screen is improved; the service life of the steel sleeve is effectively prolonged, the operation risk of equipment is reduced, the use cost of the circular vibrating screen is also reduced, and the circular vibrating screen has the characteristics of simple structure, high reliability and long service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of ore dressing equipment, and in particular relates to an eccentric shaft steel sleeve for a circular vibrating screen with simple structure, long service life and high reliability. Background Art

[0002] Circular vibrating screen is a new type of vibrating screen with circular vibration, multiple layers and high efficiency. The circular vibrating screen uses the motor to drive the eccentric shaft and the counterweight wheel connected to the eccentric shaft to rotate rapidly to cause vibration, so that the screen box connected to the four spring columns vibrates at the same time, thereby screening the materials falling into the screen. Therefore, it has the characteristics of reliable structure, strong excitation force, high screening efficiency, low vibration noise, strong and durable, easy maintenance, safe use, etc. It is widely used in product classification in mining, building materials, transportation, energy, chemical industry and other industries.

[0003] The vibrator is the core component of the circular vibrating screen. It is generally composed of an eccentric shaft and its bearing, a counterweight wheel, a pulley, and a steel sleeve mounted on the eccentric shaft, and is installed on the screen box. The eccentric shaft and the steel sleeve cross the screen box of the circular vibrating screen and are located between the upper and lower screens. The bearing is lubricated with thin oil, and the main function of the steel sleeve is to store the lubricating oil of the eccentric shaft bearing.

[0004] At present, when circular vibrating screen is used for ore screening, the steel sleeve of the eccentric shaft is easily worn by the friction of the ore. After the steel sleeve is worn, not only its mechanical strength is reduced, but also fatigue cracks frequently occur on the steel sleeve, resulting in lubricating oil leakage and impurities entering the lubricating oil. If not handled in time, the bearing will be damaged due to lack of oil or increased fatigue wear, thereby reducing the operating reliability and shortening the service life of the circular vibrating screen, and increasing the maintenance workload and maintenance cost.

[0005] In the prior art, in order to solve the problem of easy wear of the steel sleeve of the circular vibrating screen, the wall thickness of the steel sleeve is increased, or cast iron or high wear-resistant steel is used to produce the steel sleeve. Although the problem of easy wear of the steel sleeve can be solved to a certain extent, the wall thickness that can be increased is limited due to the limitation of the structural space of the circular vibrating screen and the excessive wall thickness will cause the vibrating screen to be too heavy, resulting in difficulty in maintenance and disassembly and a large screening starting power. Although the steel sleeve made of cast iron and high wear-resistant steel has strong wear resistance, it is not only expensive, but also difficult to produce and process. In addition, some materials have insufficient impact resistance. Fatigue cracks and even partial breakage are prone to occur during the reciprocating vibration of the circular vibrating screen, which seriously affects the reliability of the equipment. Of course, there are also methods such as carburizing, nitriding and surface coating of wear-resistant materials on the steel sleeve to increase the wear resistance of the steel sleeve, but carburizing and nitriding are complex processes, difficult to control the quality, and require large-scale heat treatment equipment, resulting in high costs and difficult to control the effect, so it is difficult to apply on a large scale; and surface coating of wear-resistant materials, although it can enhance the wear resistance to a certain extent, but due to the relatively smooth surface of the steel sleeve, the wear-resistant material is difficult to maintain for a long time and is easy to fall off. Although there are processes such as shot peening and knurling on the steel sleeve surface to improve the bonding force with the wear-resistant material, the wear-resistant material area on the steel sleeve surface is large, and the expansion coefficient of the wear-resistant material and the steel sleeve is quite different, so the wear-resistant material is easy to crack or even partially fall off during actual use, thereby affecting the operating reliability of the circular vibrating screen and shortening the service life of the steel sleeve. Utility Model Content

[0006] According to the deficiencies in the prior art, the utility model provides an eccentric shaft steel sleeve for a circular vibrating screen which has a simple structure, a long service life and high reliability.

[0007] The utility model is implemented as follows: the steel sleeve is arranged on the eccentric shaft, and the two ends of the steel sleeve are respectively detachably sealed and fixedly connected with the bearing seats on both sides; a plurality of transverse steel bars extending in the axial direction are fixed at intervals on the outer wall of the steel sleeve in the circumferential direction, and the outer wall of the steel sleeve is filled with a wear-resistant coating between the transverse steel bars.

[0008] Furthermore, a plurality of longitudinal steel bars are fixed at intervals between adjacent transverse steel bars on the outer wall of the steel sleeve, and the plurality of longitudinal steel bars and adjacent transverse steel bars form a plurality of square frames on the outer wall of the steel sleeve, and the wear-resistant coating is filled on the outer wall of the steel sleeve within the square frames.

[0009] Furthermore, at least one reinforcing steel bar in any direction is fixedly arranged on the outer wall of the steel sleeve in the square frame, and the wear-resistant coating covers the reinforcing steel bar or fills the side of the reinforcing steel bar.

[0010] Furthermore, the transverse steel bars and / or longitudinal steel bars are threaded steel bars or torsion steel bars, the diameter of the transverse steel bars and / or longitudinal steel bars is φ12 to φ20 mm, and the reinforcing steel bars are threaded steel bars, torsion steel bars or plain round steel bars of φ6 to φ12 mm.

[0011] Furthermore, the spacing between adjacent transverse steel bars on the outer wall of the steel sleeve is 50-120 mm, the spacing between adjacent longitudinal steel bars on the outer wall of the steel sleeve is 30-100 mm, and the spacing between adjacent longitudinal steel bars is not greater than the spacing between adjacent transverse steel bars.

[0012] Furthermore, the wear-resistant coating is filled and cured with TS816 small-particle wear-resistant coating material, TS818 large-particle wear-resistant coating material or TS828 large-particle wear-resistant coating material.

[0013] Furthermore, the wear-resistant coating has a thickness of 4 to 8 mm.

[0014] Furthermore, at least one chip discharge port is provided through the bottom of the steel sleeve, and a chip storage barrel is threadedly connected to the chip discharge port. The chip storage barrel is a cylindrical structure with an open top, and a threaded section threadedly connected to the chip discharge port is provided on the upper outer wall of the chip storage barrel.

[0015] Furthermore, a magnetic body is detachably provided on the inner side or the outer side of the bottom of the chip storage barrel.

[0016] Beneficial effects of the utility model:

[0017] 1. The utility model arranges a plurality of transverse steel bars on the outer wall of the steel sleeve, and fills a wear-resistant coating on the outer wall of the steel sleeve between the transverse steel bars, thereby forming a wear-resistant protective layer on the outer wall of the steel sleeve, so that the steel sleeve is no longer worn by the ore during the screening of the circular vibrating screen, thereby improving the reliability of the operation of the circular vibrating screen, effectively extending the service life of the steel sleeve, reducing the risk of equipment operation, and also reducing the use cost of the circular vibrating screen.

[0018] 2. The utility model fills the wear-resistant coating on the outer wall of the steel sleeve between the transverse steel bars, which not only increases the contact area between the wear-resistant coating and the steel sleeve through the transverse steel bars, thereby enhancing the bonding force between the wear-resistant coating and the steel sleeve, but also divides the wear-resistant coating on the surface of the steel sleeve through the transverse steel bars, thereby reducing the area of ​​each independent wear-resistant coating to weaken the adverse effects caused by the inconsistent expansion coefficient of the steel sleeve, and can effectively reduce or even avoid the cracking and partial shedding of the wear-resistant coating caused by the inconsistent expansion coefficient, further improving the reliability of the circular vibrating screen operation and effectively extending the service life of the steel sleeve.

[0019] 3. The utility model arranges a plurality of transverse steel bars on the outer wall of the steel sleeve, and fills the wear-resistant coating on the outer wall of the steel sleeve between the transverse steel bars. It not only has a simple structure, convenient processing and construction, and controllable quality, but also can balance the structural space and wear resistance of the circular vibrating screen by controlling the diameter of the steel bars and the thickness of the wear-resistant coating. Moreover, since the density of the wear-resistant coating is lower than that of steel, the overall weight increase is limited, and the impact on maintenance, disassembly, and screening starting power is relatively limited.

[0020] 4. The utility model further fixes a plurality of longitudinal steel bars between adjacent transverse steel bars to form a plurality of square frames, and even fixes reinforcing steel bars in any direction in the square frames, which can enhance the contact area of ​​the wear-resistant coating and reduce the area of ​​the wear-resistant coating, thereby making the filled wear-resistant coating more firmly combined with the steel sleeve, further improving the reliability of the circular vibrating screen operation, and effectively extending the service life of the steel sleeve.

[0021] 5. The utility model has a chip discharge port at the bottom of the steel sleeve, and a chip storage barrel is threadedly connected to the chip discharge port, so that iron chips and other debris with high density in the lubricating oil in the steel sleeve can be deposited from the chip discharge port and stored in the chip storage barrel. By regularly cleaning the chip storage barrel, early fatigue wear caused by iron chips and other debris entering the bearing can be avoided, further improving the reliability of the circular vibrating screen operation and effectively extending the service life of the steel sleeve.

[0022] In summary, the utility model has the characteristics of simple structure, high reliability and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the vibrator structure of an existing circular vibrating screen;

[0024] Figure 2 This is one of the structural schematic diagrams of the utility model;

[0025] Figure 3 This is the second structural diagram of the utility model;

[0026] Figure 4 for Figure 3 AA section view;

[0027] Figure 5 for Figure 3 The enlarged view of point B;

[0028] Figure 6 for Figure 4 Enlarged view of point C;

[0029] In the figure: 1-steel sleeve, 11-chip discharge port, 2-eccentric shaft, 3-bearing seat, 4-transverse steel bar, 5-wear-resistant coating, 6-longitudinal steel bar, 7-reinforced steel bar, 8-chip storage cylinder, 81-magnetic body, 9-bearing. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited in any way. Any changes or improvements made based on the teachings of the present invention belong to the protection scope of the present invention.

[0031] like Figures 1 to 6 As shown, the steel sleeve 1 of the utility model is sleeved on the eccentric shaft 2, and the two ends of the steel sleeve 1 are detachably sealed and fixedly connected to the bearing seats 3 on both sides; a plurality of transverse steel bars 4 extending axially are fixed at intervals on the outer wall of the steel sleeve 1 in the circumferential direction, and the outer wall of the steel sleeve 1 is filled with a wear-resistant coating 5 between the transverse steel bars 4.

[0032] A plurality of longitudinal steel bars 6 are fixed at intervals between adjacent transverse steel bars 4 on the outer wall of the steel sleeve 1. The plurality of longitudinal steel bars 6 and adjacent transverse steel bars 4 form a plurality of square frames on the outer wall of the steel sleeve 1. The wear-resistant coating 5 is filled on the outer wall of the steel sleeve 1 within the square frames.

[0033] At least one reinforcing steel bar 7 in any direction is fixedly arranged on the outer wall of the steel sleeve 1 in the square frame, and the wear-resistant coating 5 covers the reinforcing steel bar 7 or fills the side of the reinforcing steel bar 7.

[0034] The transverse steel bars 4 and / or the longitudinal steel bars 6 are threaded steel bars or torsion steel bars, the diameter of the transverse steel bars 4 and / or the longitudinal steel bars 6 is φ12 to φ20 mm, and the reinforcing steel bars 7 are threaded steel bars, torsion steel bars or plain round steel bars of φ6 to φ12 mm.

[0035] The spacing between adjacent transverse steel bars 4 on the outer wall of the steel sleeve 1 is 50-120 mm, the spacing between adjacent longitudinal steel bars 6 on the outer wall of the steel sleeve 1 is 30-100 mm, and the spacing between adjacent longitudinal steel bars 6 is not greater than the spacing between adjacent transverse steel bars 4.

[0036] The wear-resistant coating 5 is filled and cured with TS816 small-particle wear-resistant coating material, TS818 large-particle wear-resistant coating material or TS828 large-particle wear-resistant coating material.

[0037] The thickness of the wear-resistant coating 5 is 4 to 8 mm.

[0038] At least one chip discharge port 11 is provided through the bottom of the steel sleeve 1, and a chip storage barrel 8 is threadedly connected to the chip discharge port 11. The chip storage barrel 8 is a cylindrical structure with an open top, and a threaded section is provided on the upper outer wall of the chip storage barrel 8 which is threadedly connected to the chip discharge port 11.

[0039] A magnetic body 81 is detachably provided on the inner side or the outer side of the bottom of the chip storage barrel 8 .

[0040] Example:

[0041] like Figures 1 to 6 As shown, the processing process is as follows:

[0042] 1. Grind and clean the steel sleeve 1 to remove all attachments on the surface of the steel sleeve 1.

[0043] 2. Use φ16mm threaded steel bars to weld axially on the surface of steel sleeve 1 (to form transverse steel bars 4), then use φ16mm threaded steel bars on the surface of steel sleeve 1 inside adjacent transverse steel bars 4, weld longitudinally (to form longitudinal steel bars 6) to form a regular square frame, then embed φ8mm threaded steel bars in any direction on the surface of steel sleeve 1 inside the square frame and weld (to form reinforcing steel bars 7). Among them, the welding node length and node spacing of the aforementioned threaded steel bars are selectively welded according to the vibration conditions of the circular vibrating screen, but the welding must be stable.

[0044] 3. Remove welding slag, rust, oil and other impurities in each square frame, and use TS818 large-particle wear-resistant coating material in the square frame to fill it with a wear-resistant coating with a thickness of 4 to 8 mm (if the coating is too thin, the wear cycle will be short; if it is too thick, the filling will be unstable and easy to fall off).

[0045] 4. After the wear-resistant coating 5 is filled, it must be cured for 2 to 4 hours before it can be put into use to ensure that the wear-resistant coating 5 is firmly bonded to the surface of the steel sleeve 1.

[0046] 5. During use, when the wear-resistant coating 5 is worn to a predetermined thickness, the TS818 large-particle wear-resistant coating should be filled again in time to form a new wear-resistant coating 5 to ensure that the steel sleeve 1 is no longer worn by the ore and to extend the service life of the steel sleeve 1.

[0047] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A highly reliable eccentric shaft steel sleeve for a circular vibrating screen, wherein the steel sleeve (1) is sleeved on an eccentric shaft (2), and the two ends of the steel sleeve (1) are respectively detachably sealed and fixedly connected to bearing seats (3) on both sides; characterized in that: A plurality of transverse steel bars (4) extending in the axial direction are fixed at intervals in the circumferential direction on the outer wall of the steel sleeve (1), and a wear-resistant coating (5) is filled between the transverse steel bars (4) on the outer wall of the steel sleeve (1).

2. According to the high reliability eccentric shaft steel sleeve for circular vibrating screen of claim 1, it is characterized in that: A plurality of longitudinal steel bars (6) are fixed at intervals between adjacent transverse steel bars (4) on the outer wall of the steel sleeve (1); the plurality of longitudinal steel bars (6) and adjacent transverse steel bars (4) form a plurality of square frames on the outer wall of the steel sleeve (1); and the wear-resistant coating (5) is filled on the outer wall of the steel sleeve (1) within the square frames.

3. The eccentric shaft steel sleeve for circular vibrating screen with high reliability according to claim 2 is characterized in that: At least one reinforcing steel bar (7) in any direction is also fixedly arranged on the outer wall of the steel sleeve (1) in the square frame, and the wear-resistant coating (5) covers the reinforcing steel bar (7) or fills the side of the reinforcing steel bar (7).

4. The eccentric shaft steel sleeve for circular vibrating screen with high reliability according to claim 3 is characterized in that: The transverse steel bars (4) and / or the longitudinal steel bars (6) are threaded steel bars or twisted steel bars, the diameter of the transverse steel bars (4) and / or the longitudinal steel bars (6) is φ12 to φ20 mm, and the reinforcing steel bars (7) are threaded steel bars, twisted steel bars or plain round steel bars with a diameter of φ6 to φ12 mm.

5. The eccentric shaft steel sleeve for circular vibrating screen with high reliability according to claim 2 is characterized in that: The spacing between adjacent transverse steel bars (4) on the outer wall of the steel sleeve (1) is 50 to 120 mm, the spacing between adjacent longitudinal steel bars (6) on the outer wall of the steel sleeve (1) is 30 to 100 mm, and the spacing between adjacent longitudinal steel bars (6) is not greater than the spacing between adjacent transverse steel bars (4).

6. The high-reliability eccentric shaft steel sleeve for circular vibrating screen according to any one of claims 1 to 5, characterized in that: The wear-resistant coating (5) is formed by filling and curing TS816 small-particle wear-resistant coating material, TS818 large-particle wear-resistant coating material or TS828 large-particle wear-resistant coating material.

7. The eccentric shaft steel sleeve for circular vibrating screen with high reliability according to claim 6 is characterized in that: The thickness of the wear-resistant coating (5) is 4 to 8 mm.

8. The eccentric shaft steel sleeve for circular vibrating screen with high reliability according to claim 6 is characterized in that: At least one chip discharge opening (11) is provided through the bottom of the steel sleeve (1), and a chip storage barrel (8) is threadedly connected to the chip discharge opening (11). The chip storage barrel (8) is a cylindrical structure with an open top, and the upper outer wall of the chip storage barrel (8) is provided with a threaded section threadedly connected to the chip discharge opening (11).

9. The eccentric shaft steel sleeve for circular vibrating screen with high reliability according to claim 8, characterized in that: A magnetic body (81) is detachably provided on the inner side or the outer side of the bottom of the chip storage barrel (8).

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