Sealing device of elevator shaft

Abstract

The utility model provides a sealing device of an elevator shaft. The sealing device comprises a limiting sleeve, a jackscrew, a wear-resistant sleeve, sealing filler, felt, a bearing seat, a bearing and a bearing gland, wherein the limiting sleeve is fixedly installed on the crankshaft through the jackscrew, the abrasion-resistant sleeve is installed at the connecting position of the crankshaft and the machine shell, the abrasion-resistant sleeve is matched with the limiting sleeve in size and is tightly connected with the limiting sleeve, the sealing filler is installed on the side, close to the crankshaft, of the abrasion-resistant sleeve, and the felt is installed on the outer side of the machine shell and is in interference fit with the abrasion-resistant sleeve. A bearing is connected to the end, away from the machine shell, of the machine shaft, a bearing seat is installed on the outer ring of the bearing and tightly connected with the outer ring of the abrasion-resistant sleeve, and a bearing gland covers the end, away from the machine shell, of the bearing seat. The leakage rate at the tail wheel of the bucket elevator is reduced, the service life of equipment is prolonged, production is stable, and meanwhile the overhaul frequency of the equipment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of hoist shaft, specifically relates to a sealing device of hoist shaft. BACKGROUND

[0002] At present, the sealing of hoist shaft is mostly single sealing of felt, the hoist shaft has no protective measures, and the sealing part is separated from the bearing seat. When the bucket elevator is running, there is a certain leakage of the materials in the bucket elevator. Meanwhile, when the position of the shaft is adjusted, the shaft will contact the sealing part, causing wear of the sealing part, and after the leakage of the sealing part, the pollution source will enter the bearing, affecting the service life of the bearing. After the above problems occur, the equipment will be worn, and a large amount of materials in the equipment will be leaked, affecting the stable operation of the equipment and increasing the maintenance frequency of the equipment. CONTENT

[0003] The utility model provides a sealing device of hoist shaft for solving the problems of leakage of materials in the bucket elevator in the prior art.

[0004] The utility model provides a sealing device of hoist shaft, including spacing bush, jackscrew, wear -resisting cover, sealing filler, felt, bearing seat, bearing and bearing gland,

[0005] Wherein, spacing bush is fixedly installed on the machine shaft through jackscrew, wear -resisting cover is installed at the connecting place of the machine shaft and the machine shell, and the size of wear -resisting cover and spacing bush is matched, and wear -resisting cover is tightly connected with spacing bush, sealing filler is installed on the side close to the machine shaft of wear -resisting cover, felt is installed on the outside of the machine shell, and the interference fit between felt and wear -resisting cover is matched.

[0006] The outer ring of the bearing is provided with a bearing seat, and the outer ring of the bearing seat is tightly connected with the wear -resisting cover.

[0007] Compared with the prior art, the sealing device of the hoist shaft provided by the utility model reduces the leakage rate of the tail wheel of the bucket elevator, prolongs the service life of the equipment, enables the production to run stably, and reduces the maintenance frequency of the equipment.

[0008] Further, an oil seal is arranged in the bearing seat and at the connecting position with the machine shaft, so that the bearing is always in a sealed state.

[0009] Further, the felt is fixedly installed on the machine shell through the tension spring.

[0010] Further, the inner surface of the wear -resisting cover is provided with a spiral groove, and the spiral groove and the machine shaft form a labyrinth sealing structure.

[0011] Further, the outer surface of the wear -resisting cover is provided with a heat dissipation fin. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the sealing device profile drawing of the hoist shaft in the embodiment of the utility model.

[0013] BRIEF DESCRIPTION OF DRAWINGS

[0014] 1, limit sleeve; 2, top wire; 3, wear sleeve; 4, sealing packing; 5, felt; 6, tension spring; 7, bearing seat; 8, oil seal; 9, bearing; 10, bearing gland; 11, machine shell. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantage of the utility model more clear, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the protection scope of the utility model.

[0016] Please refer to Figure 1 The utility model provides a kind of sealing device of hoist shaft, including limit sleeve 1, top wire 2, wear sleeve 3, sealing packing 4, felt 5, bearing seat 7, bearing 9 and bearing gland 10;

[0017] Among them, limit sleeve 1 is fixedly installed on machine shaft by top wire 2, wear sleeve 3 is installed at the connecting place of machine shaft and machine shell 11, wear sleeve 3 is closely connected with the size cooperation of limit sleeve 1, wear sleeve 3 is equipped with sealing packing 4 on the side close to machine shaft, felt 5 is installed on the outside of machine shell 11, and felt 5 is interference fit with wear sleeve 3;

[0018] The outer ring of bearing 9 is equipped with bearing seat 7, bearing seat 7 is closely connected with the outer ring of wear sleeve 3, and bearing gland 10 is covered and installed at the end of bearing seat 7 away from machine shell 11.

[0019] The sealing device of hoist shaft provided by the utility model is effectively prevented from leaking material in the running process of hoist shaft by setting multiple sealing structures such as limit sleeve 1, wear sleeve 3, sealing packing 4 and felt 5;The close cooperation of limit sleeve 1 and wear sleeve 3 ensures that bearing seat 7 can act synchronously with felt 5 when adjusting the position of bearing seat 7, always makes felt 5 in sealed state, and machine shaft does not directly contact sealing place when adjusting position, reduces the wear of sealing element;At the same time, the connection of bearing seat 7 and wear sleeve 3 further enhances the sealing effect, prevents pollution source from entering bearing 9, prolongs the service life of bearing 9, reduces the maintenance frequency of equipment, improves the stability and operating efficiency of equipment.

[0020] The sealing device of the elevator shaft provided by the utility model compared with other sealing forms, reduces the leakage rate at the tail wheel of the bucket elevator, prolongs the service life of the equipment, and makes the production run smoothly, while reducing the maintenance frequency of the equipment.

[0021] Further, the oil seal 8 is arranged inside the bearing seat 7 and connected with the shaft, and is used for keeping the bearing 9 in a sealed state.

[0022] By arranging the oil seal 8 inside the bearing seat 7, the sealing performance of the bearing 9 is further enhanced, and the bearing 9 is kept in a sealed state, so that even if there is a leakage of the pollution source, the bearing 9 will not be entered. The oil seal 8 can effectively prevent external pollutants (such as dust, moisture, etc.) from entering the bearing 9, reduce the wear and corrosion of the bearing 9, thereby prolonging the service life of the bearing 9, reducing the maintenance cost of the equipment, and improving the reliability of the equipment.

[0023] In a specific embodiment, the outer side of the bearing gland 10 is provided with an oil injection hole, and the oil injection hole is communicated with the inside of the bearing seat 7 through a pipeline, and is used for periodically supplementing lubricating oil inside the bearing 9, so as to keep the bearing 9 in a good lubricated state, reduce the wear and heat of the bearing 9, and prolong the service life of the bearing 9. At the same time, the setting of the oil injection hole facilitates the maintenance operation, and reduces the maintenance difficulty and cost of the equipment.

[0024] Optionally, the felt 5 is fixedly installed on the machine shell 11 by the tension spring 6.

[0025] The felt 5 is fixed by the tension spring 6, and the tension of the felt 5 can be adjusted by the tension spring 6; the felt 5 is fixedly installed on the machine shell 11 by the tension spring 6, so as to keep the interference fit between the felt 5 and the wear-resistant sleeve 3 in a tight state. This design can effectively prevent the felt 5 from loosening due to equipment vibration or long-time operation, further enhance the sealing effect, reduce the possibility of material leakage, and improve the sealing performance and running stability of the equipment.

[0026] Further, the inner surface of the wear-resistant sleeve 3 is provided with a spiral groove, and the spiral groove and the shaft form a labyrinth seal structure.

[0027] By arranging the spiral groove on the inner surface of the wear-resistant sleeve 3, the labyrinth seal structure is formed, which can effectively block the axial leakage of the material. The labyrinth seal structure significantly improves the sealing performance by increasing the resistance of the leakage path, and is especially suitable for high-dust or high-humidity working environments, further reducing material leakage and equipment wear.

[0028] In a specific embodiment, the outer surface of the wear-resistant sleeve 3 is provided with a heat dissipation fin.

[0029] By setting the heat dissipation fins on the outer surface of the wear-resistant sleeve 3, the heat dissipation efficiency of the wear-resistant sleeve can be effectively improved, the friction heating problem caused by long-time operation can be prevented, the sealing element can be prevented from aging and failing due to high temperature, and the reliability and service life of the sealing device are further improved.

[0030] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; if these modifications and changes are within the scope of the claims of the utility model and its equivalent technology, they should be considered as the protection scope of the utility model.

Claims

1. A sealing arrangement for a hoist shaft, characterized in that The device comprises a limiting sleeve, a top screw, a wear-resistant sleeve, a sealing filler, a felt, a bearing seat, a bearing and a bearing gland. The limiting sleeve is fixedly installed on the shaft by the top screw, the wear-resistant sleeve is installed at the connecting position of the shaft and the shell, the wear-resistant sleeve is tightly connected with the limiting sleeve in size, the wear-resistant sleeve is provided with the sealing filler on the side close to the shaft, the felt is installed on the outer side of the shell, and the felt is in interference fit with the wear-resistant sleeve. The bearing is connected to the end of the shaft away from the shell, the outer ring of the bearing is provided with the bearing seat, the bearing seat is tightly connected with the outer ring of the wear-resistant sleeve, and the bearing seat is covered and installed with the bearing gland at the end away from the shell.

2. The seal arrangement for a hoist shaft as claimed in claim 1, wherein, An oil seal is arranged in the bearing seat and at the connecting position of the shaft, so that the bearing is always in a sealed state.

3. The seal arrangement for a hoist shaft as set forth in claim 1, wherein, The felt is fixedly installed on the shell by the tension spring.

4. The seal arrangement for a hoist shaft as set forth in claim 1, wherein, The inner surface of the wear-resistant sleeve is provided with a spiral groove, and the spiral groove and the shaft form a labyrinth seal structure.

5. The seal arrangement for a hoist shaft as set forth in claim 1, wherein, The outer surface of the wear-resistant sleeve is provided with a heat dissipation fin.

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