CN86206411U

CN86206411U - Hermetically sealed primary synchronous regulating mechanism

Info

Publication number: CN86206411U
Application number: CN 86206411
Authority: CN
Inventors: 常汝明
Original assignee: SHENYANG BLOWER FACTORY
Current assignee: SHENYANG BLOWER FACTORY
Priority date: 1986-08-26
Filing date: 1986-08-26
Publication date: 1987-04-29

Abstract

The utility model belongs to a regulating mechanism of a fan. Installing angles of blades of a general axial flow fan are regulated singly. Because the humidity of the using environment of the fan is high, the regulating mechanism is corroded seriously, and the blades lose the function of the regulation. Besides, the blades are regulated singly, and therefore, the dynamic unbalance is easy to generate, the service life can be affected, and the regulating time is long. The mechanism adopts a regulating shaft to regulate, the regulating shaft drives a regulating disc, and a shifting shaft is driven to realize the disposable and synchronous regulation for all blades. The utility model has the advantages that the sealing property of the regulating device is good, the convenient and flexible regulation can be ensured for a long time, the problem of the balance of impellers after regulated is solved, the service life of the fan is extended, and the regulating time is shortened to about ten minutes.

Description

Hermetically sealed primary synchronous regulating mechanism

The utility model belongs to Fan Regulation mechanism.

General axial-flow fan blade adopts single regulative mode, the 50A11 profile shaft circulation blower fan now produced of China for example, when adjusting vane, at first the front shroud of blower fan is dismantled, the wheel hub chamber is all exposed, and then the locking plate of one by one blade pole going up being locked levers up, unclamp blade chucking nut, the adjusting vane setting angle, owing to be that blade is regulated one by one, cumulative error is just bigger so, cause each blade adjustments asynchronous, make the impeller after the adjusting produce dynamic unbalance, the flow field is affected, and is unfavorable to the usability and the life-span of blower fan.In addition, the blower fan Environmental Conditions is often very moist, and the controlling mechanism corrosion is serious, easily makes blade lose regulatory function.And regulate primary vane and need reach several hrs, influence ordinary production.

Task of the present utility model is that a kind of new-type Fan Regulation mechanism will be provided, and it can realize the disposable synchronization regulation of whole blades easily.

Task of the present utility model is finished as follows: be fixed on adjustment axle on the dunnage with two thrust bearings and rolling bearing, one end seals with dust cover, the other end is connected with adjustment dish on being contained in the reel outer rim, adjustment dish outer rim is equipped with the bearing housing identical with the number of blade, rolling bearing is housed in the cover, one pivoted housing is arranged in the rolling bearing, be inserted with a shifting shaft in the pivoted housing, the shifting shaft the other end is fixed on the root of blade with nut, like this when we rotate the adjustment axle with spanner along (contrary) hour hands, adjustment dish by spiral marking connection is just made axially reciprocating riding on the reel on the feather key, and then pass through bearing housing, rolling bearing and pivoted housing, shifting shaft is rotated around contrary (suitable) hour hands of blade gyration center, so just reached the purpose of the whole blade angles of synchronization regulation, the utility model adjusting time is short, and is easy to use, also can pass through last fixture block after the adjusting, following fixture block is locked with bolt.

Below with reference to accompanying drawing the utility model is described in further detail:

Fig. 1 is the longitudinal sectional drawing of a kind of concrete structure of the utility model.

Fig. 2 is the sectional view of Fig. 1 along the A-A line.

Fig. 3 is a side view of the present utility model.

Fig. 4 is the sectional view of Fig. 3 along the B-B line.

With reference to Fig. 1, be fixed on adjustment axle (6) on the dunnage (4) with thrust bearing (8), (10) and rolling bearing (9), an end only exposes the spindle nose that mills the four directions with dust cover (7) sealing, there is a lock sheet in the outside at thrust bearing (8), in case bearing is loosening.The other end is used spiral marking connection with the adjustment dish (5) that is contained on reel (16) outer rim, adjustment dish (5) outer rim is equipped with and the same number of bearing housing of blade (11) (3), in bearing housing (3) lining rolling bearing (22) is housed, rolling bearing (22) endoporus studs with pivoted housing (14), be inserted with sliding type shifting shaft (13) on the pivoted housing (14), shifting shaft (13) the other end is fixed on blade (11) with nut and spring washer and mills on the flat root, (solid arrow is adjusted axle (6) for clockwise rotating in Fig. 1 and Fig. 4 when we rotate adjustment axle (6) with spanner along (contrary) hour hands like this, dotted arrow is adjusted axle (6) for rotating counterclockwise), owing to just on reel (16), ride feather key (15) by the adjustment dish (5) of spiral marking connection and make axially reciprocating, the bearing housing (3) that is screwed like this on adjustment dish (5) outer rim is also made axially reciprocating together with adjustment dish (5), drive pivoted housing (14) by rolling bearing (22) and make axially reciprocating equally, pivoted housing (14) drives shifting shaft (13) and rotates around contrary (suitable) hour hands of blade (11) gyration center, blade (11) is under the support of steel ball rack (12) and steel ball (1), and because the blade root of blade (11) is installed on the wheel hub (23) by thrust bearing (2) and lock sheet, the same shifting shaft of blade (11) (13) is the same like this, and contrary (suitable) hour hands rotate the α angle around the gyration center of blade (11) self.Accomplished the purpose of the whole blade angles of synchronization regulation.After the adjusting task is finished, tighten the bolt (18) on dunnage (4) boss, fixture block in the dependence (19), spring (20) and following fixture block (21) will be adjusted axle (6) locking.So just all finished the adjusting program of blade (11) established angle, regulated once more next time and need at first unclamp bolt (18), dependence spring (20) will be gone up fixture block (19), fixture block (21) is pushed open down, and other steps are the same.

With reference to Fig. 1, in order to seal the right side of wheel hub (23), at first rely on last reel (16) with screw, on the endoporus of reel (16), is furnished with tapered sleeve (17), packing in the endoporus of tapered sleeve (17) drags the motor output shaft of blower fan, seals up with regard to the tight right side with wheel hub (23) like this.

With reference to Fig. 4, the size of shifting shaft (13) L has determined to adjust the size of axle (6) moment, adjust the rotation number of turns of axle (6), with the axial stroke of adjustment dish (5), the size of axial dimension and shifting shaft (13) L has determined the regulation range of blade (11) α angle again simultaneously in wheel hub (23) chamber.

Said mechanism has not only solved blade (11) one subsynchronous step-less adjustment, and saves the adjusting time, and once only regulating needs about ten minutes, after having solved blade adjustments simultaneously, the anticorrosion problem of impeller balance and mechanism, thus working life and usability improved, obtain certain economic benefits.

The utility model structure advanced person, reasonable, compact, simple, easy accessibility is convenient to maintenance, not only can be used in axial-flow fan blade and regulate, can also be for the adjusted in concert of miscellaneous equipment. For example: it is 41.5 millimeters that newly-designed 1F50 № 12.5 weaving axial flow blowers adopt this L of mechanism, and the angle of revolution is step-less adjustment in 15 °～30 °, and adjusting the axle rotating torque is 2.5 kgfms.

Claims

1, synchronous regulation mechanism of a kind of sealed type, it is characterized in that blade [11] is under the support of steel ball rack [12] and steel ball [1], be contained on the wheel hub [23] by thrust bearing [2] and lock sheet, blade [11] can be around self turning axle rotation, adjustment dish [5] outer rim is equipped with and the same number of bearing housing of blade [11] [3], adjustment dish [5] passes through screw thread, feather key [15] is contained in uses lock sheet, thrust bearing [8], [10], rolling bearing [9] is fixed on the adjustment axle [6] on the dunnage [4] and is screwed on the reel [16] on the wheel hub [23], and can do axial motion thereon, be contained in the rolling bearing [22] of bearing housing [3] lining a pivoted housing [14] is arranged, pivoted housing [14] lining is inserted with a sliding type shifting shaft [13], shifting shaft [13] the other end is fixed on blade [11] root with nut, constitutes the slip dial axis driving mechanism that axial motion is converted to the blade rotation.

2, synchronous regulation mechanism of sealed type according to claim 1 is characterized in that: adjust axle (6) one ends with dust cover (7) sealing, only expose the spindle nose that mills the four directions, the opposite side in wheel hub (23) is equipped with reel (16) and tapered sleeve (17).

3, synchronous regulation mechanism of sealed type according to claim 1 and 2 is characterized in that: bolt (18), last fixture block (19), spring (20) and threaded fixture block (21) down are housed on the boss of dunnage (4).