CN208729685U - A kind of roots blower bearing extractor - Google Patents

A kind of roots blower bearing extractor Download PDF

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Publication number
CN208729685U
CN208729685U CN201821496932.XU CN201821496932U CN208729685U CN 208729685 U CN208729685 U CN 208729685U CN 201821496932 U CN201821496932 U CN 201821496932U CN 208729685 U CN208729685 U CN 208729685U
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China
Prior art keywords
roots blower
pull rod
mandril
support plate
blower bearing
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CN201821496932.XU
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Chinese (zh)
Inventor
赵明甡
韩拓
郭晓平
董宝泽
金飞
杨志业
赵良武
卜宗祥
王超
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Three Gate Nuclear Power Co Ltd
Sanmen Nuclear Power Co Ltd
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Three Gate Nuclear Power Co Ltd
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Priority to CN201821496932.XU priority Critical patent/CN208729685U/en
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Abstract

A kind of roots blower bearing extractor belongs to roots blower maintenance technique field.Tool includes support plate, the mandril being arranged in the middle part of support plate, is arranged in support plate side and using mandril as symmetrical four pull rods in axle center, four stop nuts, four fixture nuts;Pull rod is for screwing in the threaded hole of roots blower bearing block, and each pull rod is by being sheathed on pull rod and pull rod being fixed on roots blower bearing block in the fixture nut of roots blower bearing seating face;Stop nut is sheathed on pull rod and on the supporting plate surface, for support plate to be fixed on above roots blower bearing block by stop nut, so that mandril is by screwing in downwards roots blower bearing block in the middle part of the support plate, so that mandril head is contacted with Roots Blower Impeller axis, until ejection Roots Blower Impeller and bearing.The utility model solves the problems, such as that roots blower bearing removal is difficult, and disassembly is convenient laborsaving, and will not damage shell.

Description

A kind of roots blower bearing extractor
Technical field
The utility model relates to roots blower maintenance technique field more particularly to a kind of roots blower bearing extractors.
Background technique
The one kind of roots blower as air blower, pressure at expulsion is not high, has a pair of intermeshing gear, and gear drives Triplicate blade impeller rotation, realizes the conveying of air.
Certain power station roots blower is mainly used for wastewater pond aeration, is installed on outdoor, and coastal area sea wind salinity is high, equipment Working environment it is severe, need periodically to carry out Disintegration overhaul, the vulnerable parts such as replacement bearing, oil sealing.The disassembly of bearing is maintenance Important content needs biggish power that can just disassemble since bearing and impeller shaft, bearing block are interference fit.If disassembly Method is improper, and not only bearing is not torn open not get off, and be easy to cause the damage of bearing and correlated parts.
It is not in showing of mutually touching since each impeller of roots blower keeps correct phase by synchromesh gear always As then just needing to guarantee that gap, impeller end face and inner walls gap etc. are full between two impellers during Disintegration overhaul Foot requires, and the size in the two gaps is all equipped with direct relation with bearing.Cold charge is generally used in maintenance process middle (center) bearing, Bearing is attached to position by force by external force.And due to the chips washing system, bearing 15,21 outer rings are trapped in bearing block completely (referring to attached drawing 1), bearing can not utilize the tool ejectors such as drawing horse.Maintenance process usually dismantle by the way of tapping by violence.
Following problem has been can be found that by roots blower bearing removal process:
(1) for bearing due to being trapped in bearing block, conventional pull-out method is not applicable;
(2) roots blower shell is cast iron, in the presence of the risk that shell shatters when being dismantled using percussion.
Utility model content
In view of the problems of the existing technology the utility model, it is convenient laborsaving to propose a kind of disassembly, and will not damage shell The roots blower bearing extractor of body.
The utility model has the technical scheme that
The utility model provides a kind of roots blower bearing extractor, including support plate, is arranged in the support plate The mandril in portion is arranged in the support plate side and using the mandril as symmetrical four pull rods in axle center, four stop nuts, four A fixture nut;The pull rod is for screwing in the threaded hole of roots blower bearing block, and each pull rod is by being sheathed on drawing Bar and pull rod is fixed on roots blower bearing block in the fixture nut of the roots blower bearing seating face;The limit spiral shell Mother set is set to pull rod and in the support plate upper surface, for support plate to be fixed on the roots blower axis by stop nut It holds above seat, so that the mandril is by screwing in downwards the roots blower bearing block in the middle part of the support plate, so that push rod head Portion is contacted with Roots Blower Impeller axis, until ejection Roots Blower Impeller and bearing.
Preferably, the support plate is cross steel plate.
Preferably, offering the threaded hole passed through for mandril in the middle part of the support plate;The support plate side is equipped with The through slot passed through for pull rod;The mandril and the pull rod are screw rod.
Preferably, the through slot is the sliding slot with movable length, drawing is adjustable for pull rod to be arranged in through slot The distance between bar and mandril.
Preferably, the tail portion of the mandril is turret head.
Preferably, the diameter of the pull rod is less than the diameter of the mandril.
Preferably, the length of the pull rod is greater than the roots blower bearing block depth, the length of the mandril is greater than The sum of the length of the pull rod and the roots blower bearing block depth.
The utility model has the beneficial effects that
A kind of roots blower bearing extractor of the utility model, disassembly is convenient laborsaving, and will not damage shell.
(1) disassembly process is pressure that mandril generates due to what is utilized, and disassembly process is steady, laborsaving;
(2) risk is small, avoids impeller shaft and shell damage risk is almost nil;
(3) quick high-efficient, personnel's operation difficulty and intensity are reduced, it is easy to operate to be easy to operate;
(4) all model roots blowers in the utility model tool application range covering power plant.
Detailed description of the invention
Fig. 1 is the installation diagram of existing roots blower;
Fig. 2 is a kind of schematic perspective view of roots blower bearing extractor of the utility model;
Fig. 3 is a kind of side view of roots blower bearing extractor of the utility model;
Fig. 4 is that a kind of roots blower bearing extractor of the utility model is assemblied in the structural schematic diagram on bearing block;
1- mandril;2- stop nut, 3- support plate, 4- pull rod, 5- impeller shaft, 6- bearing block, 7- fixture nut;The left end 9- Lid, 10- straight pin, 11- shell, 12- oil sealing, 13- right end cap;14- driven impeller;15- bearing;16- active impeller;17- is anti- Dirt sealing ring;18- gear;19- gear mailbox;21- bearing.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these examples.
Such as Fig. 2-4, a kind of roots blower bearing extractor includes support plate 3, the limit of 4, four, the pull rod of mandril 1, four 2, four fixture nuts 7 of nut.The support plate 3 is equipped with threaded hole 31 in the middle, allows the mandril 1 to pass through, mandril 1 is The threaded hole of screw rod, mandril external screw-thread and support plate 3 cooperates, and can screw under choosing.The support plate 3 is also provided in its side Through slot 32 allows the pull rod 4 to pass through.The pull rod is screw rod, and pull rod external screw-thread, especially head threads are used for precession sieve It in the threaded hole 61 on 6 surface of thatch bearing fan, is threadedly engaged, and is being sheathed on pull rod and in the roots blower bearing block Under the action of the fixture nut on surface, pull rod 4 is screwed with roots blower bearing block 6 and is connect.The stop nut 2 is arranged In pull rod 4 and in 3 upper surface of support plate, for support plate 3 to be fixed on the roots blower bearing by stop nut 2 6 top of seat, so that the mandril 1 screws in downwards the roots blower bearing block 6 by 3 middle part of support plate, so that mandril Head is contacted with Roots Blower Impeller axis, until ejection Roots Blower Impeller and bearing.
The support plate is preferably cross steel plate, can save sheet material, while being able to satisfy stress support and requiring.For The roots blower of different model is adapted to, the through slot 32 of the support plate side is the sliding slot with movable length, is used for pull rod 4 It is arranged in through slot 32 and is adjustable the distance between pull rod 4 and mandril 1.Four pull rods 4 penetrate the position of the support plate 3 It sets, is that axle center is symmetrical with the mandril 1, wherein each pull rod is identical as the distance between mandril 1.
The diameter of the pull rod 4 is less than the diameter of the mandril 1.For this purpose, the pull rod 4 selects M8 screw rod.The mandril 1 Select M16 screw rod.To rotate mandril 1 convenient for force, the mandril tail portion is turret head 11, whole when acting on mandril tail portion Root mandril can move up and down.
The length of the pull rod 4 is greater than 6 depth of roots blower bearing block, and the length of the mandril 1 is greater than the drawing The sum of the length of bar 4 and 6 depth of roots blower bearing block.Can ensure that in this way can convenient adjusting when using the tool ejector Mandril square length in reserve on the supporting plate, can effectively dismantle bearing.
Using the roots blower bearing extractor of the present embodiment, concrete operations are as follows:
Roots blower includes 2 impellers, and two extracting tools can synchronize use when dismantling bearing.It is existing that this is practical when use 4 pull rods of new tool screw in 6 threaded hole 61 of roots blower bearing block, and fixed with fixture nut 7.Support plate 3 is installed Afterwards, stop nut 2 is limited.Mandril 1 is screwed in support plate 3, moves downward it until mandril head and roots blower Impeller shaft contact.Checking mandril, whether there are enough allowance length (at least more than bearing block depth) for side on the supporting plate, such as Improper adjustment pull rod stop nut.
Mandril 1 can generate a pressure when moving downward to impeller shaft 5, rotation mandril 1 until its by impeller and bearing one With ejection, it is finally completed bearing removal work.
It should be understood by those skilled in the art that foregoing description and the embodiments of the present invention shown in the drawings are only used as It illustrates and is not intended to limit the utility model.The purpose of this utility model completely effectively realizes.The function of the utility model And structural principle shows and illustrates in embodiment, under without departing from the principle, the embodiments of the present invention can To have any deformation or modification.

Claims (7)

1. a kind of roots blower bearing extractor, which is characterized in that including support plate, the top being arranged in the middle part of the support plate Bar is arranged in the support plate side and using the mandril as symmetrical four pull rods in axle center, four stop nuts, four fixations Nut;The pull rod for screwing in the threaded hole of roots blower bearing block, each pull rod by be sheathed on pull rod and Pull rod is fixed on roots blower bearing block by the fixture nut of the roots blower bearing seating face;The stop nut is arranged In pull rod and in the support plate upper surface, for support plate to be fixed on the roots blower bearing block by stop nut Side, so that the mandril is by screwing in downwards the roots blower bearing block in the middle part of the support plate, so that mandril head and sieve Thatch blower fan impeller shaft contact, until ejection Roots Blower Impeller and bearing.
2. a kind of roots blower bearing extractor according to claim 1, which is characterized in that the support plate is cross Shape steel plate.
3. a kind of roots blower bearing extractor according to claim 1, which is characterized in that opened in the middle part of the support plate Equipped with the threaded hole passed through for mandril;The support plate side is equipped with the through slot passed through for pull rod;The mandril and described Pull rod is screw rod.
4. a kind of roots blower bearing extractor according to claim 3, which is characterized in that the through slot is with shifting The sliding slot of dynamic length, is adjustable the distance between pull rod and mandril for pull rod to be arranged in through slot.
5. a kind of roots blower bearing extractor according to claim 1, which is characterized in that the tail portion of the mandril is Turret head.
6. a kind of roots blower bearing extractor according to claim 1, which is characterized in that the diameter of the pull rod is small In the diameter of the mandril.
7. a kind of roots blower bearing extractor according to claim 1, which is characterized in that the length of the pull rod is big In the roots blower bearing block depth, length of the length greater than the pull rod of the mandril and the roots blower bearing block The sum of depth.
CN201821496932.XU 2018-09-13 2018-09-13 A kind of roots blower bearing extractor Active CN208729685U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821496932.XU CN208729685U (en) 2018-09-13 2018-09-13 A kind of roots blower bearing extractor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821496932.XU CN208729685U (en) 2018-09-13 2018-09-13 A kind of roots blower bearing extractor

Publications (1)

Publication Number Publication Date
CN208729685U true CN208729685U (en) 2019-04-12

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110900512A (en) * 2019-11-25 2020-03-24 广东石油化工学院 A bearing removal device
CN111267041A (en) * 2020-03-13 2020-06-12 江苏核电有限公司 Roots compressor bearing seat dismounting device for nuclear power station and dismounting method thereof
CN111546287A (en) * 2020-06-15 2020-08-18 常州博瑞电力自动化设备有限公司 Device for replacing to-be-detected device for valve string and using method of device
CN112123272A (en) * 2020-10-19 2020-12-25 北京星际荣耀空间科技有限公司 Centrifugal impeller disassembling tool
CN112605940A (en) * 2020-11-18 2021-04-06 扎赉诺尔煤业有限责任公司 Sleeve joint type part non-damage detacher
CN118287991A (en) * 2024-04-24 2024-07-05 西安航天发动机有限公司 A disassembly tool and disassembly method for a shaft system double-hole interference fit inducer wheel part

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110900512A (en) * 2019-11-25 2020-03-24 广东石油化工学院 A bearing removal device
CN110900512B (en) * 2019-11-25 2021-03-19 广东石油化工学院 Bearing dismounting device
CN111267041A (en) * 2020-03-13 2020-06-12 江苏核电有限公司 Roots compressor bearing seat dismounting device for nuclear power station and dismounting method thereof
CN111546287A (en) * 2020-06-15 2020-08-18 常州博瑞电力自动化设备有限公司 Device for replacing to-be-detected device for valve string and using method of device
CN111546287B (en) * 2020-06-15 2023-12-15 常州博瑞电力自动化设备有限公司 Replacement device for to-be-detected device of valve string and use method thereof
CN112123272A (en) * 2020-10-19 2020-12-25 北京星际荣耀空间科技有限公司 Centrifugal impeller disassembling tool
CN112605940A (en) * 2020-11-18 2021-04-06 扎赉诺尔煤业有限责任公司 Sleeve joint type part non-damage detacher
CN118287991A (en) * 2024-04-24 2024-07-05 西安航天发动机有限公司 A disassembly tool and disassembly method for a shaft system double-hole interference fit inducer wheel part

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