CN205876742U - Centrifugal air pump - Google Patents

Centrifugal air pump Download PDF

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Publication number
CN205876742U
CN205876742U CN201620831714.1U CN201620831714U CN205876742U CN 205876742 U CN205876742 U CN 205876742U CN 201620831714 U CN201620831714 U CN 201620831714U CN 205876742 U CN205876742 U CN 205876742U
Authority
CN
China
Prior art keywords
bearing
housing
main shaft
air pump
cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201620831714.1U
Other languages
Chinese (zh)
Inventor
刘学庆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Us Good Deco Skill (wuxi) Co Ltd
Original Assignee
Us Good Deco Skill (wuxi) Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Us Good Deco Skill (wuxi) Co Ltd filed Critical Us Good Deco Skill (wuxi) Co Ltd
Priority to CN201620831714.1U priority Critical patent/CN205876742U/en
Application granted granted Critical
Publication of CN205876742U publication Critical patent/CN205876742U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a centrifugal air pump relates to air pump technical field, and this air pump includes in main shaft and transmission portion that back casing forms confined work cavity with preceding casing, and the internal impeller assembly that sets up of working chamber is equipped with bearing, bearing frame on the main shaft and between the preceding casing, is equipped with the bearing housing on the bearing, be equipped with on the outer periphery of bearing housing along the recess of principal axis direction setting, be equipped with the locating pin that can be lateral shifting in the recess for the recess on the preceding casing, the recess width is the same with the diameter of locating pin, because the stiction between bearing and the bearing housing is great, the bearing housing can remove along with the bearing, and the length and the width design of the recess of bearing housing have guaranteed that the bearing housing can remove along the bearing direction, prevent the rotation of bearing housing again, protection bearing that the bearing housing can be fine.

Description

Centrifugal air pump
Technical field
This utility model relates to air pump technical field, is specifically related to a kind of centrifugal air pump.
Background technology
Air pump is a kind of to increase the pressure of gas and to be allowed to the device of transport flow, and it has multiple different operation Mechanism Design.Centrifugal air pump is one therein.Centrifugal air pump needs to be revolved by the blade in Engine Driven Pump Turn.When the speed demand of electromotor is more and more higher, the electric energy of the required conversion of driving assembly in pump is the most, therefore driving group The operating temperature of part is the highest.The main shaft that especially impeller rotates, during high speed rotating, temperature is higher, main shaft Typically being made up of metal material, easily expand after being heated, main shaft is typically provided bearing, and bearing can be along with the main axle moving expanded, axle Hold and easily extrude with bearing block during movement, cause damage.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of can be protected the bearing at front housing, extends The centrifugal air pump of service life of equipment.
In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is: a kind of centrifugal air pump, is included in The driving section that main shaft one end is arranged, is provided with the back cabinet and front housing being rotationally connected with it, back cabinet and front housing on main shaft Formed close working cavity, impeller sets is set in working cavity, back cabinet is provided with gas outlet, mmi machine shell be provided with into QI KOU, is provided with bearing on main shaft and between front housing, Bearing outer is provided with the bearing block being fixedly connected on front housing, described axle Holding and be provided with bearing holder (housing, cover), bearing holder (housing, cover) is between bearing and bearing block, and the outer circumference surface of described bearing holder (housing, cover) is provided with parallel main axis The groove that direction is arranged, described front housing is provided with and can be perpendicular to determining of main shaft relative to what groove laterally moved in groove Position pin, recess width is identical with the diameter of alignment pin, 1.5~2 times of a length of alignment pin diameter of groove, described bearing and axle Maximum static friction force between bearing sleeve is more than the maximum static friction force between bearing holder (housing, cover) and bearing block.
As a kind of optimal way of bearing holder (housing, cover), the two ends, transverse section of described groove are semicircle, and mid portion is rectangle.
As a kind of improved procedure of the present utility model, described front housing is provided with for the passage to bearing oiling, note Oil inlet passage and the oil discharge passage of oil passage are respectively positioned on above bearing.
Further, the main shaft near driving section is provided with radiator fan.
Can be seen that this utility model has the advantage that due to the static friction between bearing and bearing holder (housing, cover) from such scheme Power is relatively big, and bearing holder (housing, cover) can move with bearing, and the length of the groove of bearing holder (housing, cover) and width design ensure that bearing holder (housing, cover) can edge Bearing direction to move, prevent again the rotation of bearing holder (housing, cover), bearing holder (housing, cover) can well protect bearing, arranges the oiling of " U " type Passage can make the lubricating oil of addition fully contact with bearing 5, improves lubricant effect, extends the service life of bearing, and saves Lubricating oil.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the top view of centre bearer bush of the present utility model;
Shown in figure: 1, main shaft;2, back cabinet;3, front housing;4, impeller sets;5, bearing;6, bearing block;7, bearing holder (housing, cover); 8, alignment pin;9, groove;10, radiator fan;11, oiling passage;12, oil discharge passage;13, seal receptacle;14, sealing gasket.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is elaborated.
As it can be seen, centrifugal air pump of the present utility model is included in the driving section that main shaft 1 one end is arranged, driving section is used for Drive the rotation of main shaft, on the main shaft 1 of driving section, be provided with radiator fan 10, main shaft 1 be additionally provided with it company of rotation Back cabinet 2 and the front housing 3 connect, back cabinet 2 forms, with front housing 3, the working cavity closed, is provided with and gives vent to anger on back cabinet 2 Pipe, mmi machine shell 3 is provided with air inlet, arranges impeller sets 4 in this working cavity, and impeller sets 4 is by some groups of driving wheels and quiet takes turns Composition, driving wheel is fixedly installed on main shaft 1, and quiet wheel is fixed in working cavity, and quiet wheel cooperates with driving wheel, and main shaft 1 is close Being provided with bearing 5 on the end of front housing 3, bearing 5 is outside is provided with the bearing block 6 being fixedly connected on front housing 3, front housing 3 On be additionally provided with for the passage to bearing 5 oiling, oil inlet passage 11 and the oil discharge passage 12 of oiling passage are respectively positioned on bearing 5 Side, the oiling passage arranging " U " type can make the lubricating oil of addition fully contact with bearing 5, improves lubricant effect, extends bearing Service life, and save lubricating oil.Bearing block 6 end is provided with bearing cap, is provided with liner between bearing block 6 and bearing cap, main Axle is externally provided with lining, is provided with stud between back cabinet and front housing, and at driving wheel, quiet take turns between outside back cabinet and front housing It is provided with locating ring.
Back cabinet inwall is provided with circular seal receptacle 13, and main shaft is provided with the sealing gasket 14 matched with seal receptacle, It is provided with edge of a knife labyrinth seal structure between back cabinet 2 and main shaft 1 and can reduce the leakage of gas in cavity.
Bearing 5 is provided with bearing holder (housing, cover) 7, and bearing holder (housing, cover) 7 is between bearing 5 and bearing block 6, and bearing holder (housing, cover) 7 outside is provided with prolongs The groove 9 that major axes orientation is arranged, parallel with main shaft 1, groove 9 can be arranged on the bottom of bearing holder (housing, cover) 7, with groove 9 on front housing 3 Correspondence position is provided with an alignment pin 8, alignment pin 8 vertical major, and alignment pin 8 inserts in groove, and alignment pin 8 can be in groove 9 Laterally moving relative to groove 9, groove 9 width is identical with the diameter of alignment pin, and the length of groove 9 is alignment pin diameter Between 1.5 to 2 times, the transverse section of groove 9 can be rectangle, it is also possible to two ends are semicircle, and centre is rectangle, semi-circular portion Diameter identical with alignment pin, the alignment pin 8 of this structure both can ensure that with groove 9 that bearing holder (housing, cover) 7 slided together with can prolonging main shaft, Prevent again the rotation of bearing holder (housing, cover) 7, closely arrange between bearing 5 and bearing holder (housing, cover) 7, smooth between bearing holder (housing, cover) 7 and bearing block 6 set Putting, the maximum static friction force between bearing 5 and bearing holder (housing, cover) 7 is more than the maximum static friction force between bearing holder (housing, cover) 7 and bearing block 6.
When main shaft high speed rotating, main shaft expanded by heating, main shaft is fixed near back cabinet part, swollen near front housing part Swollen elongation, owing to the stiction between bearing and bearing holder (housing, cover) is relatively big, bearing holder (housing, cover) can move with bearing, the groove of bearing holder (housing, cover) Length ensure that bearing holder (housing, cover) can move along bearing direction with width design, prevent again the rotation of bearing holder (housing, cover), bearing holder (housing, cover) Can well protect bearing, directly contact and easily extrude between bearing with bearing block, bearing is fragile, and arranging bearing holder (housing, cover) can To extrude between preventing between bearing and bearing block.

Claims (5)

1. a centrifugal air pump, is included in the driving section that main shaft (1) one end is arranged, is provided with company of rotation with it on main shaft (1) The back cabinet (2) connect and front housing (3), back cabinet (2) forms, with front housing (3), the working cavity closed, sets in working cavity Putting impeller sets (4), be provided with gas outlet on back cabinet (2), mmi machine shell (3) is provided with air inlet, and main shaft (1) is gone up and front housing (3) being provided with bearing (5) between, bearing (5) is outside is provided with the bearing block (6) being fixedly connected on front housing, it is characterised in that: institute Stating bearing (5) and be provided with bearing holder (housing, cover) (7), bearing holder (housing, cover) (7) is positioned between bearing (5) and bearing block (6), described bearing holder (housing, cover) (7) Outer circumference surface is provided with the groove (9) that parallel main axis (1) direction is arranged, and described front housing (3) is provided with can be in groove (9) internal phase The alignment pin (8) being perpendicular to main shaft that groove (9) is laterally moved, the diameter phase of groove (9) width and alignment pin (8) With, 1.5~2 times of a length of alignment pin diameter of groove, the maximum static friction force between described bearing (5) and bearing holder (housing, cover) (7) More than the maximum static friction force between bearing holder (housing, cover) (7) and bearing block (6).
Centrifugal air pump the most according to claim 1, it is characterised in that: the two ends, transverse section of described groove (9) are semicircle Shape, mid portion is rectangle.
Centrifugal air pump the most according to claim 1, it is characterised in that: described front housing is provided with for bearing (5) The passage of oiling, oil inlet passage (11) and the oil discharge passage (12) of oiling passage are respectively positioned on above bearing.
Centrifugal air pump the most according to claim 1, it is characterised in that: the main shaft (1) near driving section is provided with heat radiation Fan (10).
Centrifugal air pump the most according to claim 1, it is characterised in that: described back cabinet inwall is provided with circular sealing Seat (13), described main shaft is provided with the sealing gasket (14) matched with seal receptacle.
CN201620831714.1U 2016-08-02 2016-08-02 Centrifugal air pump Expired - Fee Related CN205876742U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620831714.1U CN205876742U (en) 2016-08-02 2016-08-02 Centrifugal air pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620831714.1U CN205876742U (en) 2016-08-02 2016-08-02 Centrifugal air pump

Publications (1)

Publication Number Publication Date
CN205876742U true CN205876742U (en) 2017-01-11

Family

ID=57702566

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620831714.1U Expired - Fee Related CN205876742U (en) 2016-08-02 2016-08-02 Centrifugal air pump

Country Status (1)

Country Link
CN (1) CN205876742U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107542702A (en) * 2017-10-10 2018-01-05 美佳德科技(无锡)有限公司 Centrifugal air pump with edge seal structure
CN106050690B (en) * 2016-08-02 2018-09-25 美佳德科技(无锡)有限公司 Centrifugal air pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106050690B (en) * 2016-08-02 2018-09-25 美佳德科技(无锡)有限公司 Centrifugal air pump
CN107542702A (en) * 2017-10-10 2018-01-05 美佳德科技(无锡)有限公司 Centrifugal air pump with edge seal structure

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Legal Events

Date Code Title Description
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170111

Termination date: 20170802