CN216407478U - Dry sliding bearing of material conveying regulating valve - Google Patents

Abstract

The utility model relates to a dry sliding bearing of a material conveying regulating valve. A material conveying regulating valve rolling bearing of dry ash conveying equipment such as lime powder is contacted with the lime powder for a long time, the ash entering of a bearing raceway is easy to wear and block, the block is blocked 5-6 times every day in serious conditions, a servo motor is tripped in an overload mode, and the material conveying amount is difficult to control or interrupt. A dry sliding bearing of a material conveying regulating valve comprises the following components: the inner sleeve is arranged in the outer sleeve, the outer sleeve is arranged in a bearing chamber of an original end cover of the regulating valve, the inner sleeve is arranged on a rotating shaft of a rotor door plate, a straw hat edge structure of the inner sleeve is matched with a concave table of the outer sleeve to form a first movable seal, a seal groove (4) with an annular structure is formed in the inner wall of the outer sleeve, and seal packing (3) is arranged in the seal groove to form a second movable seal; the straw hat edge structure of the outer sleeve has the functions of limiting and static sealing. The utility model is applied to the material conveying regulating valve.

Description

Dry sliding bearing of material conveying regulating valve

Technical Field

The utility model relates to a dry sliding bearing of a material conveying regulating valve.

Background

A material conveying regulating valve rolling bearing of dry ash conveying equipment such as lime powder is contacted with the lime powder for a long time, the ash entering of a bearing roller path is easy to wear and block, the bearing roller path is blocked 5-6 times every day in serious conditions, a servo motor is tripped in an overload mode, the material conveying amount is difficult to control or interrupt, and the material conveying regulating valve rolling bearing can only be manually and repeatedly knocked and turned by a barring so as to dredge the accumulated ash in the bearing and maintain the operation of the equipment; meanwhile, the bearing is worn, damaged and seriously failed, the bearing needs to be replaced once in two months, the replacement is frequent, the labor intensity is high, the reliability is poor, the maintenance cost is high, great potential safety hazards exist, and the safe and reliable operation of the dry ash and lime powder conveying equipment is seriously influenced.

Disclosure of Invention

The utility model aims to provide a dry sliding bearing of a material conveying regulating valve.

The above purpose is realized by the following technical scheme:

defeated material governing valve dry-type slide bearing, its constitution includes: the inner sleeve is arranged in the outer sleeve, the outer sleeve is arranged in a bearing chamber of an original end cover of the regulating valve, the inner sleeve is arranged on a rotating shaft of the rotor door plate, a straw hat edge structure of the inner sleeve is matched with a concave platform of the outer sleeve to form a first dynamic seal, a seal groove with an annular structure is formed in the inner wall of the outer sleeve, and seal packing is arranged in the seal groove to form a second dynamic seal;

a radial gap of 0.50mm is formed between the inner sleeve and the outer sleeve, and an axial gap of more than or equal to 3mm is formed on the end surface.

The dry sliding bearing of the material conveying regulating valve is characterized in that the outer sleeve is made of 45# steel, and the inner sleeve is made of brass.

The utility model has the beneficial effects that:

1. the utility model has the characteristics of flexible rotation, difficult jamming, long service life, convenient installation, no jamming and abrasion damage caused by the ash entering of the bearing after installation and the like.

Compared with the original rolling bearing, the utility model has the innovation points that:

(1) the dry type sliding bearing is assembled without changing the structure of a material conveying regulating valve, and an original rolling bearing is replaced by the dry type sliding bearing by utilizing an original end cover (bearing chamber) of the regulating valve;

(2) a radial gap of 0.50mm is designed and processed between the inner sleeve and the outer sleeve to ensure that the rotation is flexible and does not jam; the end face is designed and processed with an axial clearance which is more than or equal to 3mm so as to ensure that the expansion space is not jammed;

(3) when the outer sleeve is designed and processed, the matching size of the outer sleeve and a bearing chamber is ensured, and meanwhile, in order to prevent loosening and slipping, a straw hat edge is designed on the end face of one side of the outer edge of the outer sleeve, and a limiting ring is designed on the side of the inner side of the outer sleeve, so that the phenomenon that a shaft is too large and rubbed, abraded and jammed is prevented;

(4) when the inner sleeve is designed and processed, the straw hat edge with the limiting and sealing functions is also designed, and the straw hat edge and the filler are sealed to form double sealing;

(5) in order to prevent the inner sleeve and the outer sleeve from being worn or jammed in case of ash feeding, a stuffing groove for additionally installing a sealing felt is designed and processed on the inner ring of the outer sleeve;

(6) the bearing chamber of the regulating valve is a regulating valve end cover and is an integral bearing chamber, an original rolling bearing is heated without an expansion gap, so that the rolling body is easily jammed, the servo motor of the regulating valve is tripped due to overload, and even the motor is burnt;

(7) the problem of only 5 mm's clearance, unable filler such as setting up skeleton seal or felt seal of former bearing and valve arc door plant terminal surface is solved.

Compared with the prior art, the dry sliding bearing device has the advantages that:

(1) the rotation is flexible, and the device is not jammed, thereby improving the reliability of the device and reducing the labor intensity of maintenance personnel.

(2) Simple structure, low cost and easy processing and manufacturing.

(3) The applicability is strong, the process is simple, and the batch processing and manufacturing can be carried out according to different size requirements.

(4) The disassembly and the assembly are convenient, and the operation is simple.

(5) The sealing performance is good, and the leakage is not easy to occur.

(6) The dry bearing does not use lubricating grease, and the maintenance cost is low.

Description of the drawings:

FIG. 1 is a schematic structural diagram of the present invention.

Figure 2 is a schematic view of the structure of the jacket.

Fig. 3 is a schematic structural view of the inner sleeve.

FIG. 4 is a schematic view of the connection of the bearing housing to the end cap of the regulator valve.

In the figure: 1. the bearing comprises an inner sleeve, 2, an outer sleeve, 3, sealing filler, 4, a sealing groove, 5, a bearing chamber, 6 and a regulating valve end cover.

The specific implementation mode is as follows:

example 1:

a dry sliding bearing of a material conveying regulating valve comprises the following components: the inner sleeve is arranged in the outer sleeve, the inner sleeve and the outer sleeve form a dry sliding bearing, the outer sleeve is arranged in a bearing chamber of an original end cover of the regulating valve, the inner sleeve is arranged on a rotating shaft of a rotor door plate, a straw hat edge structure of the inner sleeve is matched with a concave platform of the outer sleeve to form a first dynamic seal, a seal groove 4 of an annular structure is formed in the inner wall of the outer sleeve, and a sealing filler 3 is arranged in the seal groove to form a second dynamic seal; the straw hat edge structure of the outer sleeve has a limiting function and a static sealing function, a radial gap of 0.50mm is formed between the inner sleeve and the outer sleeve, and an axial gap of more than or equal to 3mm is formed in the end face. The outer sleeve is made of 45# steel, and the inner sleeve is made of brass.

Example 2:

detailed description of the dry type sliding bearing device of the present invention:

(1) the dry sliding bearing device comprises an outer sleeve, an inner sleeve, sealing filler and the like. The outer sleeve is arranged in a bearing chamber of the original end cover of the regulating valve, the inner sleeve rotor door plate is arranged on a rotating shaft, and the sealing filler is arranged in a sealing groove on the inner wall of the outer sleeve.

(2) During assembly, the outer sleeve of the device is pressed from inside to outside and is lightly tapped in an end cover (a bearing chamber) of the regulating valve, the side of the outer sleeve with the straw cap edge faces inwards, the limit assembly is guaranteed to be proper, outward sliding displacement is prevented, the inner sleeve is pressed by the side of the straw cap edge, then felt (or other elastic fillers) is arranged in a sealing groove of the inner wall of the outer sleeve, the size of the fillers is suitable for matching the inner sleeve with the outer sleeve, the rotation is flexible, and the regulating valve is assembled finally.

(3) According to the actual situation on site, the proper size is selected, the dry type sliding bearing device is processed, the same material is avoided being selected, the sticking caused by friction heating during rotation is avoided, and the dry type sliding bearing is preferably made of two materials, namely an inner sleeve (brass) and an outer sleeve (# 45 steel).

(4) The processing of the inner and outer sleeves needs to ensure the fit clearance of each part of the inner and outer sleeves, and a radial clearance of 0.50mm is needed between the inner and outer sleeves to ensure the flexible rotation without jamming; the end face is designed and processed with an axial clearance which is more than or equal to 3mm so as to ensure that the expansion space is not blocked.

(5) The dry sliding bearing device is installed on a control regulating valve of desulfurizer conveying equipment of our company, is flexible to rotate, does not have the phenomenon of jamming, and has long service life and good effect.

Claims (2)

1. A dry sliding bearing of a material conveying regulating valve comprises the following components: the overcoat, characterized by: the inner sleeve is arranged in the outer sleeve, the outer sleeve is arranged in a bearing chamber of an original end cover of the regulating valve, the inner sleeve is arranged on a rotating shaft of the rotor door plate, a straw hat edge structure of the inner sleeve is matched with a concave table of the outer sleeve to form a first dynamic seal, a seal groove with an annular structure is formed in the inner wall of the outer sleeve, and seal packing is arranged in the seal groove to form a second dynamic seal;

a radial gap of 0.50mm is formed between the inner sleeve and the outer sleeve, and an axial gap of more than or equal to 3mm is formed on the end surface.

2. The dry slide bearing of claim 1, characterized in that: the outer sleeve 45# steel outer sleeve is a brass inner sleeve.

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