CN206360919U - A kind of large centrifugal blower fan antifriction-bearing housing group - Google Patents

Abstract

The utility model discloses a kind of large centrifugal blower fan antifriction-bearing housing group, including positioned at main shaft one end, while bearing rotor operation produces axial load and the thrust bearing group of radial load and thrust radiating wind wheel, and positioned at the main shaft other end, bear the spring bearing group and support radiating wind wheel of rotor radial load, also axial thrust bearing group and spring bearing group provide the thin oil lubricant petrol station of air blast cooling but circulating lubricating oil；Due to using forced circulation oil lubrication; and the radiating wind wheel of increase mandatory guidance heat; the normal operation of the rolling bearing under the conditions of high temperature area or no-cooling-water can be used; and under high temperature, the live field condition of no-cooling-water; the place that the utility model bearing housing group can be arranged in High Altitude Platform and cooling water used in blower fan or other equipment and can not reach is used; ecological environment is protected again due to eliminating substantial amounts of cooling water resources, can efficiently solve the deficiencies in the prior art.

Description

A kind of large centrifugal blower fan antifriction-bearing housing group

Technical field

The utility model is related to large centrifugal blower fan technical field, more particularly to a kind of large centrifugal blower fan is rolled Bearing housing group.

Background technology

Large centrifugal blower fan must use bearing housing when using rolling bearing, and the two ends that bearing housing is located at axle are paired Use, be divided into support end bearing housing and thrust end bearing case.Support end bearing housing is located at the end of blower fan main shaft, supports main shaft Other parts are not being connected on the outside of free end, support end bearing housing；Thrust end bearing case supports the other end of blower fan main shaft, its Outside is also connected with transmission parts or miscellaneous equipment, and thrust end bearing case supports to overcome blower fan axial force to design End bearing case is then solely subjected to radial load.The U of Chinese patent Authorization Notice No. CN 201513375, authorized announcement date June 23 in 2010 Day, utility model title：Large centrifugal blower fan solid box case；The utility model is solid box case, its structure Simply, convenient to install and maintain, using effect is good, and manufacturing cost is low, and sealing effectiveness more preferably, can extend making for bearing and lubricating oil Use the life-span.But the utility model technology is in actual applications, there is the deficiency being limited using scope, because the utility model technology Using the type of cooling of water cooling, and it is that can not be cooled down using logical to lack area in some droughts, environment temperature height, water resource The progress blower fan cooling of water mode, because blower fan is applied under steel plant's dedusting fan environmental condition, the gas flowed into blower fan Temperature is 130 DEG C, and these gases are transmitted on the rolling bearing of blower fan after heating the impeller of blower fan and main shaft, if blower fan Using live no-cooling-water, bearing housing cannot be cooled down, and also fan bearing temperature ceaselessly raised.Around other blower fan The higher bearing housing that is unfavorable for of environment temperature radiates so that bearing temperature is raised, because bearing housing is closed cast iron cavity structure, axle Hold the heat in case to be difficult to shed to the outside, blower fan ambient atmosphere environment temperature is 38-52 DEG C, so high environment temperature is unfavorable In bearing housing radiating, along with the heat radiation that the Blower Housing of high temperature is produced, bearing housing radiating is less useful for so that fan bearing Temperature is raised again.And this area can not use the carry out blower fan cooling of logical cooling water mode because water resource lacks so that The utility model technology can not meet the requirement of no-cooling-water source and high temperature drought environment harsh conditions.Accordingly, it would be desirable to a kind of Technical scheme solves the above problems.

The content of the invention

For above the deficiencies in the prior art, the purpose of this utility model is to provide a kind of large centrifugal blower fan and rolled Bearing housing group, can meet the requirement of no-cooling-water source and high temperature drought environment harsh conditions.

To achieve the above object, the utility model is realized using following technical scheme：

The utility model include positioned at main shaft one end, while bear rotor operation produce axial load and radial load only Thrust bearing group and thrust radiating wind wheel, and positioned at the main shaft other end, bear spring bearing group and the support of rotor radial load Radiate wind wheel, and also axial thrust bearing group and spring bearing group provide the thin oil lubricant petrol station of air blast cooling but circulating lubricating oil.

Thrust bearing group includes thrust bearing cap, thrust shaft block, thrust side cover, oil baffle disc I, oil baffle disc II, filler oil Envelope I, filler oil sealing II, oil-sealed stuffer I, oil-sealed stuffer II, dust cap I, dust cap II, packing ring, round nut, thrust oil-feed connect Pipe, the fuel-displaced adapter of thrust, thrust spheric roller bearing, thrust radiating wind wheel；Wherein thrust bearing cap, thrust shaft block, thrust Side cover surrounds thrust box, and thrust bearing cap, thrust shaft block material are formed by HT250 casts, and both pass through Bolt is in up-down structure tight, and the thrust side cover is fixed on a thrust bearing cap after tight, thrust shaft block；Thrust sphere is rolled Sub- bearing is contained in thrust box, and is set on main shaft.

The oil circuit with being connected inside thrust box, thrust are further respectively had on the thrust bearing cap and thrust shaft block One end of oil-feed adapter is connected with the oil circuit that thrust bearing is covered by the way that screw thread is affixed, and the other end is provided with oil-feed pipe connecting flange, simultaneously It is connected to air blast cooling but thin oil lubricant petrol station；Oil communication on one end and thrust shaft block of the fuel-displaced adapter of thrust, it is another End is provided with fuel-displaced pipe connecting flange and is connected to air blast cooling but thin oil lubricant petrol station；Covered in thrust bearing and be respectively equipped with measurement and stop Push away the sensor of spheric roller bearing temperature and vibration.

The main shaft at thrust bearing group end sequentially passes through thrust side cover, thrust bearing cap and thrust shaft block, by stopping for the end Thrust bearing case is passed, and is respectively equipped with installed in thrust bearing cap, thrust shaft block and is stopped in the both sides of thrust spheric roller bearing Push away the filler oil sealing II of the filler oil sealing I and opposite side on side cover.

The filler oil sealing I installed in thrust bearing group, positioned at thrust spheric roller bearing side, wherein oil baffle disc I and oil By interior (inside thrust box), outwards (outside thrust box) is sequentially sleeved on main shaft packing material I, and oil baffle disc I passes through On the affixed main shaft of screw, filler oil sealing I is fixed on thrust side cover by bolt, and dust cap I is fixed in filler oil by bolt Seal and felt collar is placed in I outside, dust cap I inwalls annular groove, the oil-sealed stuffer I is located between filler oil sealing I and main shaft, The gap of setting is left between filler oil sealing I internal end surface and oil baffle disc I, dust cap is passed through between oil-sealed stuffer I and main shaft 1 The affixed pressure thight contacts of I.

The side of thrust spheric roller bearing 1 is provided with the packing ring and round nut being set on main shaft, thrust spherical roller axle Axially position is realized in the outer ring held by thrust side cover and thrust bearing cap, the seam of thrust shaft block inwall, and inner ring passes through master The shaft shoulder and the packing ring and round nut positioning on axle.

Filler oil sealing II positioned at thrust spheric roller bearing opposite side is identical with above-mentioned filler oil sealing I structures, wherein By interior (inside thrust box), outwards (outside thrust box) is sequentially sleeved on main shaft oil baffle disc II and oil-sealed stuffer II, Filler oil sealing II is fixed in thrust bearing cap, on thrust shaft block by bolt, and dust cap II is fixed in filler oil by bolt Seal II outside, place felt collar in dust cap II inwalls annular groove, the oil-sealed stuffer II be located at filler oil sealing II and main shaft it Between, the gap of setting is left between filler oil sealing II internal end surface and oil baffle disc II, is led between oil-sealed stuffer II and main shaft 1 Cross the affixed pressure thight contacts of dust cap II.

Spring bearing group include support radiating wind wheel, spring bearing lid, supporting bearing base, support side cover, oil baffle disc III, Filler oil sealing III, oil-sealed stuffer III, dust cap III, support oil-feed take over, support fuel-displaced adapter, support spheric roller bearing, Wherein spring bearing lid, supporting bearing base and support side cover surround spring bearing case, spring bearing lid and supporting bearing base by HT250 casts are formed, and both are by bolt tightly, and the spring bearing lid is fixed in spring bearing lid and branch by bolt Support on bearing block；Support spheric roller bearing is contained in spring bearing case, and is set on main shaft.

The oil circuit with being connected inside spring bearing case, support are further respectively had on the spring bearing lid and supporting bearing base One end of oil-feed adapter is connected with the oil circuit that spring bearing is covered by the way that screw thread is affixed, and the other end is provided with oil-feed pipe connecting flange, simultaneously It is connected to air blast cooling but thin oil lubricant petrol station；Support the oil communication on one end and supporting bearing base of fuel-displaced adapter, the other end Provided with fuel-displaced pipe connecting flange and be connected to, air blast cooling but thin oil lubricant petrol station；Covered in spring bearing and be respectively equipped with measurement support The temperature of spheric roller bearing and the sensor of vibration.

The main shaft at spring bearing group end is through support side cover, and shaft end end is located in spring bearing case, in spring bearing lid Filler oil sealing III is provided with, the filler oil sealing III is identical with the filler oil sealing I structures in thrust bearing group, wherein oil baffle disc By interior (inside spring bearing case), outwards (outside spring bearing case) is sequentially sleeved on main shaft, filler III and oil-sealed stuffer III Oil sealing III is fixed in support-side by bolt and covered, and dust cap III is fixed in filler oil sealing III outside by bolt, dust-proof Cover and felt collar is placed in III inwalls annular groove.The oil-sealed stuffer III is located between filler oil sealing III and main shaft, in filler oil sealing The gap of setting is left between III internal end surface and oil baffle disc III, passes through dust cap III between oil-sealed stuffer III and main shaft Affixed pressure thight contact.

The side of support spheric roller bearing is provided with the packing ring and round nut being set on main shaft, supports spheric roller bearing Outer ring axially leaving the gap of setting with support side cover and spring bearing lid, supporting bearing base, support spherical roller axle The inner ring held is positioned by the shaft shoulder on main shaft and the packing ring and round nut.

Lubrication working method of the present utility model is：Bearing out of is taken the heat in bearing housing using circulating oil lubrication Casing is improved in terms of lubricating oil temperature is reduced, and the water cooling mode of prior art and bearing housing oil sump lubricating system are changed For the forced circulation oil lubrication type of cooling, that is, oil transportation steel pipe road direction wind passed through using the thin oil lubricant petrol station of air blast cooling but Machine bearing case provides self-contained lubrication oil, to improve thrust spheric roller bearing, support spheric roller bearing lubricating condition, especially For it is important that self-contained lubrication oil from bearing housing flow out when, take the heat in bearing housing lubricating oil out of bearing housing, together When lubricating oil when flowing through oil transportation steel pipe road, there is partial heat to carry out cooling, lubricating oil temperature by the air of surrounding and dropped It is low, when lubricating oil continues flow through the fin of thin oil lubricant petrol station cooler, entered by the pressure fan airstream of radiator One step is cooled down, and this causes the lubricating oil temperature that lubricating oil station is exported to be reduced, and the lubricating oil after supercooling flows into wind again Machine bearing case, realizes the reduction of bearing housing internal lubrication oil temperature, and improves cooling and the lubricating condition of rolling bearing.

Above-mentioned measure ensure that the reduction of bearing housing external box of microvave temperature, and bearing housing internal lubrication oil temperature is realized again Reduction.In this, use of an outer cooling measure thoroughly improves the lubrication of rolling bearing, cooling condition and ensures fan shaft Temperature stabilization is held within the scope of certain temperature；

Blower fan I, blower fan II, blower fan III each select 1 spring bearing group and 1 thrust bearing group, are stopped by calculating Push away spheric roller bearing, support the caloric value of spheric roller bearing to select suitable thin oil lubricant petrol station；Pass through moment of friction Spring bearing is calculated to select：Self-aligning roller bearing 22232CC/W33, bearing nominal endoporus d=160mm, bearing load F= 13300N, bearing working rotating speed n=990r/min；Thrust bearing is selected：Self-aligning roller bearing 22332CC/W33, bearing nominal Interior d=160mm, bearing load F=79 200N, bearing working rotating speed n=990r/min；By spring bearing moment of friction and Thrust bearing moment of friction calculation bearing caloric value configures 1 thin oil lubricant petrol station from 3 Fans, according to 3 Fans, 6 axles Hold gross calorific power and determine that forced circulation supplies the fuel delivery of lubricants capacity；

It is computed, spring bearing circulating oil lubrication oil mass is 1.12L/min, thrust bearing circulating oil lubrication oil mass is 6.67L/min, the total circulating oil lubrication oil mass of 1 bearing of Fans 2 is 8L/min.

By above-mentioned calculating and look into curve per two bearings of Fans (spring bearing group, thrust bearing group) and need lubricating oil Amount is about 8L/min, and it is 3x 8=24L/min that 3 Fans, which share 1 Fans lubricating oil total amount of thin oil lubricant petrol station 32,3, by Higher in environment temperature, if increasing petrol station recycle oil, lubrication oil flow rate is just fast, when lubricating oil is by bearing housing by bearing Heat band in case walks faster, and thrust spheric roller bearing, the temperature of support spheric roller bearing are reduced in time, and Ensure that thrust spheric roller bearing, support spheric roller bearing can be stablized to work within the temperature range of a permission, be quick The heat of lubricating oil in bearing housing is taken away from the thin oil lubricant petrol station 32 of 5 times of calculating flow values, thin oil lubricant petrol station 32 is chosen Lubricants capacity be 5x 24=120L/min.

Seal oil principle of the present utility model is by oil baffle disc I, oil baffle disc II, oil baffle disc III and filler oil sealing What I, filler oil sealing II, filler oil sealing III structures were realized, thrust spheric roller bearing, support spheric roller bearing fly when rotating The lubricating oil splashed, which first passes around oil baffle disc I, oil baffle disc II, oil baffle disc III, to be stopped, is left small part fluid and is entered filler oil In envelope I, filler oil sealing II, filler oil sealing III and oil-sealed stuffer I, oil-sealed stuffer II, oil-sealed stuffer III gap, now by pacifying Oil-sealed stuffer I, oil-sealed stuffer II, oil-sealed stuffer III on main shaft stop fluid and fluid are back into bearing housing； To prevent dust from entering in bearing housing, dust cap I, dust cap II, dust cap III and felt are respectively mounted in the both sides of bearing housing Circle, it is ensured that the lubricating oil in bearing housing is not contaminated.

The utility model is also improved in terms of bearing housing radiating, in the bearing housing of thrust bearing group, spring bearing group Outer body is not provided with the thrust radiating wind wheel of mandatory guidance heat, support radiating wind wheel, in thrust bearing group, spring bearing The close casing side of group increases the thrust radiating wind wheel of centrifugation open type, support radiation air wheel suit and is fixed in blower fan main shaft respectively On, by thrust spheric roller bearing, support spheric roller bearing and bearing when thrust radiating wind wheel, support radiation air wheel are rotated The heat that case is produced is siphoned away, and is realized the forced ventilation outside bearing housing and is reduced the temperature of bearing housing.

Thrust radiating includes inner ring, outer ring, cylindrical drum, strip prismatic blade, connection circle, fan-shaped disc, fan-shaped space.

The outer ring is that some fan-shaped discs are uniformly stretched out in annulus disk-like structure, its card, and the fan-shaped disc is in 90 Spend right angle to stretch out, outer ring use internal diameter to enclose circular planes d1~d2, D1 for the cold-stamped part that d1, external diameter are that D1, thickness are t, two ~D2 slab constructions are easy to the comprehensive engagement with spindle mounted, and the width of fan-shaped disc is that (n is 360 degree to π d2/2n~π D2/2n The setting number of disc on circumference), the n sector space from d2~D2 at is formed in card at fan-shaped disc stretching, is easy to cold punching Compacting is made, and simplifies manufacturing process and dimensional uniformity is controllable so that even structure, increases effective heat dissipating mass.

The inner ring is blade wheel-like structure, if it includes a cylindrical drum, the outer surface circumference uniform distribution of cylindrical drum is protruded Dry strip prismatic blade and connection circle, the connection circle are connected between some strip prismatic blades.Inner ring center is using a circle Column casing structure, designing internal diameter isExternal diameter isThickness is (π D2/2n+t), and the strip prismatic blade is phase same material Rectangle.Rectangular slat is highly that L, width are (π d2/2n-t), and material is thus formed a blade wheel, circle diameter is connected in addition For d2 so that even structure, so that heat transfer is uniform, the external surface area of inner ring is increased, heat conduction efficiency is enhanced, beneficial to scattered Heat.The height of the cylindrical drum is outer ring thickness t and strip prismatic blade height L sums.

The inner ring and outer ring are after installing and assembling is fixed on blower fan main shaft, the inner ring strip prismatic blade and outer ring Fan-shaped disc quantity is consistent, be staggered, it is desirable to which n strip prismatic blade of inner ring is exactly at d2~D2 of outer ring n On fan-shaped space and fan-shaped disc structure line of demarcation, so set and cause the spaced correspondence of Internal and external cycle radiator structure, inner ring Connect the circle diameter d2 and fan-shaped disc inside diameter d2 in outer ring 182 and interference fit is set, be easily installed and assemble, structure is tight Gather, space structure utilization rate is being improved on blower fan main shaft, while increasing the external surface area of radiator structure, improve radiating Fabric utilization so that heat transfer is uniform, and substantially increases radiation efficiency, effectively enhances thrust bearing group, support The radiating service behaviour and effect of bearing group.

Further, rolling bearing no-cooling-water set bearing housing is followed by the petrol station progress pressure of configuration air cooling thin oil lubricant Ring oil lubrication, and increase the radiating wind wheel of mandatory guidance heat, it is ensured that using in high temperature area or no-cooling-water condition The normal operation of lower rolling bearing, due to saving the cooling water in bearing housing, solves the problem in user's no-cooling-water source, saves again The equipment such as hydraulic pipeline, water pump and cooling tower have been gone, have been that user saves fund, equipment and place.

Further, there is no hollow water channel due to casing using the bearing housing of forced circulation oil lubrication, it is to avoid during casting The problems such as stomata that hollow water channel often occurs, crackle, improve the qualification rate of casting, eliminate before Mechanical processing of casting, process after two The process of secondary water pressure test.Bearing housing cools down water- cooled footstep case before improving to be logical, is lubricated using oil sump, miscellaneous in lubricating oil Matter is mixed in oil sump, influences the service life of bearing, and when using circulating oil lubrication bearing, lubricating oil passes through thin oil lubricant petrol station Filter filtering after quality of lubrication oil preferably, the service life of bearing is improved.

Further, forced circulation oil-lubricated bearing case, and increase mandatory guidance heat radiating wind wheel, high temperature, Run under no-cooling-water field condition it is extremely successful, a typhoon cooling thin oil lubricant petrol station to 3 Fans bearing lubrication, cooling Its total power consumption is only 7.5k W, and such a bearing housing can be used in blower fan or other equipment is arranged in High Altitude Platform and cooling water not The place that can be reached is used, and in the case where current most regional waters lack, equipment bearing case is glossy using forced circulation Cunning is a selection well, and ecological environment is protected again due to eliminating substantial amounts of cooling water resources.

Compared with prior art, the beneficial effects of the utility model are：

The utility model discloses a kind of large centrifugal blower fan antifriction-bearing housing group, including positioned at main shaft one end, same When bear rotor operation and produce axial load and the thrust bearing group of radial load and thrust radiating wind wheel, it is and another positioned at main shaft One end, the spring bearing group for bearing rotor radial load and support radiating wind wheel, also axial thrust bearing group and spring bearing group The thin oil lubricant petrol station of air blast cooling but circulating lubricating oil is provided；Due to using forced circulation oil lubrication, and increase pressure to draw The radiating wind wheel of heat conduction amount, can use the normal operation of the rolling bearing under the conditions of high temperature area or no-cooling-water, and in height Under the live field condition of temperature, no-cooling-water, the utility model bearing housing group can be used in blower fan or other equipment is arranged in high-altitude and put down The place that platform and cooling water can not be reached is used, and protects ecological environment again due to eliminating substantial amounts of cooling water resources, can have Effect ground solves the deficiencies in the prior art.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model thrust bearing group；

Fig. 2 is the structural representation of the utility model spring bearing group；

Fig. 3 is the utility model lubricating oil station and wind turbine layout schematic diagram；

Fig. 4 is Fig. 3 D to schematic diagram；

Fig. 5 is the radiating wind wheel structure schematic diagram of the utility model thrust bearing group；

Fig. 6 is the A-A of Fig. 5 radiating wind wheels to sectional view；

Fig. 7 is the radiating wind wheel inner ring front view of the utility model thrust bearing group；

Fig. 8 is the B-B direction sectional view of Fig. 7 radiating wind wheel inner rings；

Fig. 9 is the radiating wind wheel outer ring front view of the utility model thrust bearing group；

Figure 10 is the C-C of Fig. 9 radiatings wind wheel outer ring to sectional view.

In figure：1- thrust bearing caps, 2- thrust shaft blocks, 3- thrusts side cover, 4- oil baffle disc I, 5- oil baffle disc II, 6- fillers Oil sealing I, 7- filler oil sealing II, 8- oil-sealed stuffer I, 9- oil-sealed stuffer II, 10- dust cap I, 11- dust cap II, 12- packing ring, 13- round nuts, 14- thrusts oil-feed adapter, the fuel-displaced adapter of 15- thrusts, 16- thrusts spheric roller bearing, 17- main shafts, 18- thrusts Radiate wind wheel, 181- inner rings, 182- outer rings, 183- cylindrical drums, 184- strips prismatic blade, 185- connections circle, 186- sector disks The fan-shaped space of piece, 187-, 19- support radiatings wind wheel, 20- spring bearings lid, 21- supporting bearing bases, 22- supports side cover, 23- gears Food tray III, 24- filler oil sealing III, 25- oil-sealed stuffer III, 26- dust cap III, 27- support oil-feed adapter, 28- branch are overhanged Oil adapter, 29- supports spheric roller bearing, 301- blower fan I, 302- blower fan II, 303- blower fan III, 31- dust arrester, 32- are dilute Oil lubrication petrol station.

Embodiment

The utility model is described in detail with reference to Figure of description, it should be noted that of the present utility model Implementation is not limited to following embodiment.

The utility model is included positioned at the one end of main shaft 17, while bearing rotor operation produces axial load and radial load Thrust bearing group and thrust radiating wind wheel 18, and positioned at the main shaft other end, bear rotor radial load spring bearing group and Support radiating wind wheel 19, also axial thrust bearing group and spring bearing group provide the thin oil lubricant of air blast cooling but circulating lubricating oil Petrol station 32.

As shown in figure 1, thrust bearing group includes thrust bearing cap 1, thrust shaft block 2, thrust side cover 3, oil baffle disc I4, gear Food tray II5, filler oil sealing I6, filler oil sealing II7, oil-sealed stuffer I8, oil-sealed stuffer II9, dust cap I10, dust cap II11, pad Circle 12, round nut 13, thrust oil-feed adapter 14, the fuel-displaced adapter 15 of thrust, thrust spheric roller bearing 16, thrust radiating wind wheel 18；Wherein thrust bearing cap 1, thrust shaft block 2, thrust side cover 3 surround thrust box, and thrust bearing cap 1, thrust bearing 2 materials of seat are formed by HT250 casts, and both are tight in up-down structure handle by bolt, and the thrust side cover 3 is fixed in handle On tight rear thrust bearing cap 1, thrust shaft block 2；Thrust spheric roller bearing 16 is contained in thrust box, and is set in master On axle 17.

The oil circuit with being connected inside thrust box is further respectively had on the thrust bearing cap 1 and thrust shaft block 2, only One end of oily adapter 14 is promoted to be connected with the oil circuit on thrust bearing cap 1 by the way that screw thread is affixed, the other end is provided with oil-feed pipe connection method Orchid is simultaneously connected to air blast cooling but thin oil lubricant petrol station 32；One end of the fuel-displaced adapter 15 of thrust and the oil circuit on thrust shaft block 2 Connection, the other end is provided with fuel-displaced pipe connecting flange and is connected to air blast cooling but thin oil lubricant petrol station 32；Divide on thrust bearing cap 1 The sensor of the temperature of thrust spheric roller bearing 16 and vibration She You not measured.

The main shaft 17 at thrust bearing group end sequentially passes through thrust side cover 3, thrust bearing cap 1 and thrust shaft block 2, by the end Thrust box pass, be respectively equipped with the both sides of thrust spheric roller bearing 16 installed in thrust bearing cap 1, thrust bearing The 2 and filler oil sealing I6 on thrust side cover 3 of seat and opposite side filler oil sealing II7.

The filler oil sealing I6, wherein oil baffle disc I4 installed in thrust bearing group, positioned at the side of thrust spheric roller bearing 16 And by interior (inside thrust box), outwards (outside thrust box) is sequentially sleeved on main shaft 17 oil-sealed stuffer I8, and gear oil Disk I4 is by the way that on the affixed main shaft 17 of screw, filler oil sealing I6 is fixed on thrust side cover 3 by bolt, and dust cap I10 passes through spiral shell Bolt, which is fixed in filler oil sealing I6 outside, dust cap I10 inwalls annular groove, places felt collar, and the oil-sealed stuffer I8 is located at filler Between oil sealing I6 and main shaft 17, the gap of setting is left between filler oil sealing I6 internal end surface and oil baffle disc I4, oil sealing is filled out Contacted between material I8 and main shaft 17 by the affixed pressure thights of dust cap I10.

The side of thrust spheric roller bearing 16 is provided with the packing ring 12 and round nut 13 being set on main shaft 17, thrust sphere Axially position is realized in the outer ring of roller bearing 16 by thrust side cover 3 and thrust bearing cap 1, the seam of the inwall of thrust shaft block 2, Inner ring is positioned by the shaft shoulder on main shaft 17 and the packing ring 12 and round nut 13.

Filler oil sealing II7 positioned at the opposite side of thrust spheric roller bearing 16 is identical with above-mentioned filler oil sealing I6 structures, By interior (inside thrust box), outwards (outside thrust box) is sequentially sleeved at wherein oil baffle disc II5 and oil-sealed stuffer II9 On main shaft 17, filler oil sealing II7 is fixed in thrust bearing cap 1, on thrust shaft block 2 by bolt, and dust cap II11 passes through spiral shell Bolt, which is fixed in filler oil sealing II7 outside, dust cap II11 inwalls annular groove, places felt collar, and the oil-sealed stuffer II9 is located at Between filler oil sealing II7 and main shaft 17, the gap of setting is left between filler oil sealing II7 internal end surface and oil baffle disc II5, Contacted between oil-sealed stuffer II9 and main shaft 17 by the affixed pressure thights of dust cap II11.

As shown in Fig. 2 spring bearing group includes support radiating wind wheel 19, spring bearing lid 20, supporting bearing base 21, support Side cover 22, oil baffle disc III23, filler oil sealing III24, oil-sealed stuffer III25, dust cap III26, support oil-feed adapter 27, branch Oily adapter 28, support spheric roller bearing 29 are overhanged, wherein spring bearing lid 20, supporting bearing base 21 and support side cover 22 is surrounded Spring bearing case, spring bearing lid 20 and supporting bearing base 21 are formed by HT250 casts, and both are tight by bolt handle, The spring bearing lid 20 is fixed on spring bearing lid 20 and supporting bearing base 21 by bolt；Support spheric roller bearing 29 It is contained in spring bearing case, and is set on main shaft 17.

The oil circuit with being connected inside spring bearing case is further respectively had on the spring bearing lid 20 and supporting bearing base 21, One end of support oil-feed adapter 27 is connected with the oil circuit on spring bearing lid 20 by the way that screw thread is affixed, and the other end is taken over provided with oil-feed Flange is simultaneously connected to air blast cooling but thin oil lubricant petrol station 32；One end of the fuel-displaced adapter 28 of support and the oil in supporting bearing base 21 Road is connected, the other end provided with fuel-displaced pipe connecting flange and be connected to, air blast cooling but thin oil lubricant petrol station 32；In spring bearing lid 20 On be respectively equipped with measurement support spheric roller bearing 29 temperature and vibration sensor.

The main shaft 17 at spring bearing group end is through support side cover 22, and shaft end end is located in spring bearing case, in support shaft Lid 20 is held provided with filler oil sealing III24, the filler oil sealing III24 is identical with the filler oil sealing I6 structures in thrust bearing group, By interior (inside spring bearing case), outwards (outside spring bearing case) covers wherein oil baffle disc III23 and oil-sealed stuffer III25 successively It is located on main shaft 17, filler oil sealing III24 is fixed on support side cover 22 by bolt, and dust cap III26 is affixed by bolt Felt collar is placed in filler oil sealing III24 outside, dust cap III26 inwalls annular groove.The oil-sealed stuffer III25, which is located at, to be filled out Expect between oil sealing III24 and main shaft 17, setting is left between filler oil sealing III24 internal end surface and oil baffle disc III23 Gap, is contacted between oil-sealed stuffer III25 and main shaft 17 by the affixed pressure thights of dust cap III26.

The side of support spheric roller bearing 29 is provided with the packing ring 12 and round nut 13 being set on main shaft 17, supports sphere The outer ring of roller bearing 29 and support side cover 22 and spring bearing lid 20, supporting bearing base 21 are between setting is axially left Gap, the inner ring of support spheric roller bearing 29 is positioned by the shaft shoulder on main shaft 17 and the packing ring 12 and round nut 13.

As Figure 3-Figure 4, lubrication working method of the present utility model is：Using circulating oil lubrication by bearing housing Heat take out of bearing housing from reduce lubricating oil temperature in terms of be improved, by the water cooling mode and bearing housing of prior art Oil sump lubricating system is changed to the forced circulation oil lubrication type of cooling, that is, is led to using the thin oil lubricant petrol station 32 of air blast cooling but Cross oil transportation steel pipe road direction Fan Bearing Box and self-contained lubrication oil is provided, to improve thrust spheric roller bearing 16, support sphere The lubricating condition of roller bearing 29, significantly self-contained lubrication oil from bearing housing flow out when, by bearing housing lubricating oil Heat take bearing housing out of, while when lubricating oil flows through oil transportation steel pipe road, thering is partial heat to be carried out by the air of surrounding cold But, lubricating oil temperature is reduced, when lubricating oil continues flow through the fin of the cooler of thin oil lubricant petrol station 32, quilt The pressure fan airstream of radiator is further cooled down, and this causes the lubricating oil temperature that lubricating oil station is exported to be reduced, through supercooling But the lubricating oil after flows into Fan Bearing Box again, realizes the reduction of bearing housing internal lubrication oil temperature, and improves rolling The cooling of bearing and lubricating condition.

Above-mentioned measure ensure that the reduction of bearing housing external box of microvave temperature, and bearing housing internal lubrication oil temperature is realized again Reduction.In this, use of an outer cooling measure thoroughly improves the lubrication of rolling bearing, cooling condition and ensures fan shaft Temperature stabilization is held within the scope of certain temperature；

Blower fan I301, blower fan II302, blower fan III 303 each select 1 spring bearing group and 1 thrust bearing group, By calculating thrust spheric roller bearing 16, supporting the caloric value of spheric roller bearing 29 to select suitable thin oil lubricant petrol station 32；Selected by the calculating spring bearing of moment of friction：Self-aligning roller bearing 22232CC/W33, bearing nominal endoporus d= 160mm, bearing load F=13 300N, bearing working rotating speed n=990r/min；Thrust bearing is selected：Self-aligning roller bearing D=160mm in 22332CC/W33, bearing nominal, bearing load F=79 200N, bearing working rotating speed n=990r/min；It is logical Cross spring bearing moment of friction and thrust bearing moment of friction calculation bearing caloric value and configure 1 thin oil lubricant from 3 Fans Petrol station 32, determines that forced circulation supplies the fuel delivery of lubricants capacity according to 3 Fans, 6 bearing gross calorific powers；

It is computed, spring bearing circulating oil lubrication oil mass is 1.12L/min, thrust bearing circulating oil lubrication oil mass is 6.67L/min, the total circulating oil lubrication oil mass of 1 bearing of Fans 2 is 8L/min.

By above-mentioned calculating and look into curve per two bearings of Fans (spring bearing group, thrust bearings) and need lubricating oil Amount is about 8L/min, and it is 3x 8=24L/min that 3 Fans, which share 1 Fans lubricating oil total amount of thin oil lubricant petrol station 32,3, by Higher in environment temperature, if increasing petrol station recycle oil, lubrication oil flow rate is just fast, when lubricating oil is by bearing housing by bearing Heat band in case walks faster, and thrust spheric roller bearing 16, the temperature of support spheric roller bearing 29 are dropped in time It is low, and ensure that thrust spheric roller bearing 16, support spheric roller bearing 29 can the stable works within the temperature range of a permission Make, be thin oil lubricant petrol station 32 of the heat from 5 times of calculating flow values of lubricating oil in fast speed belt bearing running case, choose thin oil profit The lubricants capacity at lubricating oil station 32 is 5x 24=120L/min.

Seal oil principle of the present utility model is by oil baffle disc I4, oil baffle disc II5, oil baffle disc III23 and filler What oil sealing I6, filler oil sealing II7, filler oil sealing III24 structures were realized, thrust spheric roller bearing 16, support spherical roller axle Hold the lubricating oil splashed during 29 rotation and first pass around oil baffle disc I4, oil baffle disc II5, oil baffle disc III23 and stopped, be left few portion Divide fluid to enter filler oil sealing I6, filler oil sealing II7, filler oil sealing III24 and oil-sealed stuffer I8, oil-sealed stuffer II9, oil sealing to fill out In the gap for expecting III25, now stopped by the oil-sealed stuffer I8 on main shaft, oil-sealed stuffer II9, oil-sealed stuffer III25 Fluid is simultaneously back into bearing housing by fluid；To prevent dust from entering in bearing housing, it is respectively mounted in the both sides of bearing housing dust-proof Cover I10, dust cap II11, dust cap III26 and felt collar, it is ensured that the lubricating oil in bearing housing is not contaminated.

As Figure 1-Figure 2, the utility model is also improved in terms of bearing housing radiating, in thrust bearing group, support Thrust radiating wind wheel 18, the support radiating wind wheel 19 of mandatory guidance heat are respectively arranged with outside the bearing housing of bearing group, Thrust bearing group, the close casing side of spring bearing group increase thrust radiating wind wheel 18, the support radiation air of centrifugation open type respectively The suit of wheel 19 is fixed on blower fan main shaft 17, by thrust spherical roller when thrust radiating wind wheel 18, support radiating wind wheel 19 are rotated The heat that bearing 16, support spheric roller bearing 29 and bearing housing are produced is siphoned away, and realizes the forced ventilation outside bearing housing And reduce the temperature of bearing housing.

As shown in Figure 5,6, thrust radiating wind wheel 18 includes inner ring 181, outer ring 182, cylindrical drum 183, strip prismatic blade 184th, connection circle 185, fan-shaped disc 186, fan-shaped space 187.

As shown in Fig. 5,9,10, the outer ring 182 is uniformly to stretch out some fan-shaped discs in annulus disk-like structure, its card 186, the fan-shaped disc 186 is in the stretchings of 90 degree right angles, and outer ring 182 uses internal diameter for cold punching that d1, external diameter are that D1, thickness are t Casting die, two circle circular planes d1~d2, D1~D2 slab constructions are easy to the comprehensive engagement assembled with main shaft 17, fan-shaped disc 186 Width be in π d2/2n~π D2/2n (n is the setting number of disc on 360 degree circumference), card at the sector stretching of disc 186 The n fan-shaped space 187 at d2~D2 is formed, is easy to cold stamping to manufacture, simplifies manufacturing process and dimensional uniformity is controllable, make Even structure is obtained, effective heat dissipating mass is increased.

As shown in Fig. 5,7,8, the inner ring 181 is blade wheel-like structure, and it includes a cylindrical drum 183, cylindrical drum 183 Some strip prismatic blades 184 and connection circle 185 that outer surface circumference uniform distribution is protruded, the connection circle 185 is connected to some Between strip prismatic blade 184.The center of inner ring 181 uses the structure of a cylindrical drum 183, and design internal diameter isExternal diameter isThickness For (π D2/2n+t), the strip prismatic blade 184 is the rectangle of phase same material.Rectangular slat be highly L, width be (π d2/2n- T), material is thus formed a blade wheel, a diameter of d2 of circle 185 is connected in addition so that even structure, so that heat transfer is equal It is even, the external surface area of inner ring is increased, heat conduction efficiency is enhanced, beneficial to radiating.The height of the cylindrical drum 183 is outer ring 182 thickness t and the height L sums of strip prismatic blade 184.

As shown in Figure 5,6, inner ring 181 and outer ring 182 are after installing and assembling is fixed on blower fan main shaft 17, the inner ring 181 strip prismatic blades 184 are consistent with the fan-shaped quantity of disc 186 in outer ring 182, be staggered, it is desirable to the straight leaf of n strip of inner ring Piece 184 is exactly at d2~D2 of outer ring on n fan-shaped space 187 and the fan-shaped structure line of demarcation of disc 186, and so setting makes Obtain the spaced correspondence of Internal and external cycle radiator structure, connection circle diameter d2 and the fan-shaped inner side of disc 186 in outer ring 182 of inner ring 181 Diameter d2 sets interference fit, is easily installed and assembles, compact conformation, is utilized improving space structure on blower fan main shaft 17 Rate, while increasing the external surface area of radiator structure, improves radiator structure utilization rate so that heat transfer is uniform, and fully increases Add radiation efficiency, effectively enhance thrust bearing group, the radiating service behaviour of spring bearing group and effect.

Claims (7)

1. a kind of large centrifugal blower fan antifriction-bearing housing group, including radiated positioned at the thrust bearing group of main shaft one end and thrust Wind wheel, and spring bearing group and support radiating wind wheel positioned at the main shaft other end, also axial thrust bearing group and spring bearing Group provides the thin oil lubricant petrol station of air blast cooling but circulating lubricating oil；It is characterized in that：The thrust bearing group is by thrust bearing Lid, thrust shaft block, thrust side cover surround thrust box, and thrust bearing cap, thrust shaft block are tied by bolt above and below Structure is tightly, and the thrust side cover is fixed on a tight rear thrust bearing cap, thrust shaft block；Thrust spheric roller bearing is contained in In thrust box, and it is set on main shaft；Further respectively had and thrust bearing on the thrust bearing cap and thrust shaft block The oil circuit of connection inside case, one end of thrust oil-feed adapter is connected with the oil circuit that thrust bearing is covered by the way that screw thread is affixed, another End is provided with oil-feed pipe connecting flange and is connected to air blast cooling but thin oil lubricant petrol station；One end of the fuel-displaced adapter of thrust and thrust bearing Oil communication on seat, the other end is provided with fuel-displaced pipe connecting flange and is connected to air blast cooling but thin oil lubricant petrol station.

2. a kind of large centrifugal blower fan antifriction-bearing housing group according to claim 1, it is characterised in that：The thrust ball The both sides of face roller bearing be respectively equipped with filler oil sealing I on thrust bearing cap, thrust shaft block and thrust side cover, with And the filler oil sealing II of opposite side；Wherein oil baffle disc I and oil-sealed stuffer I are sequentially sleeved on main shaft from inside to outside, and oil baffle disc I By the way that on the affixed main shaft of screw, filler oil sealing I is fixed on thrust side cover by bolt, dust cap I is fixed in by bolt to be filled out Expect to place felt collar in oil sealing I outside, dust cap I inwalls annular groove, the oil-sealed stuffer I be located at filler oil sealing I and main shaft it Between, the gap of setting is left between filler oil sealing I internal end surface and oil baffle disc I, is passed through between oil-sealed stuffer I and main shaft 1 The affixed pressure thight contacts of dust cap I.

3. a kind of large centrifugal blower fan antifriction-bearing housing group according to claim 2, it is characterised in that：Positioned at thrust ball The filler oil sealing II of face roller bearing opposite side is identical with above-mentioned filler oil sealing I structures, wherein oil baffle disc II and oil-sealed stuffer II is sequentially sleeved on main shaft from inside to outside, and filler oil sealing II is fixed in thrust bearing cap, on thrust shaft block by bolt, is prevented Dirt lid II, which is fixed in by bolt in filler oil sealing II outside, dust cap II inwalls annular groove, places felt collar, and the oil sealing is filled out Expect that II is located between filler oil sealing II and main shaft, left between filler oil sealing II internal end surface and oil baffle disc II between setting Gap, is contacted between oil-sealed stuffer II and main shaft 1 by the affixed pressure thights of dust cap II.

4. a kind of large centrifugal blower fan antifriction-bearing housing group according to claim 1, it is characterised in that：The support shaft Hold group and spring bearing case is surrounded by spring bearing lid, supporting bearing base and support side cover, spring bearing lid and supporting bearing base are logical Bolt is crossed tightly, the spring bearing lid is fixed on spring bearing lid and supporting bearing base by bolt；Support spherical roller Bearing is contained in spring bearing case, and is set on main shaft；Further respectively had in the spring bearing lid and supporting bearing base With the oil circuit connected inside spring bearing case, one end of support oil-feed adapter and the oil circuit that spring bearing is covered are affixed by screw thread Connection, the other end is provided with oil-feed pipe connecting flange and is connected to air blast cooling but thin oil lubricant petrol station；Support one end of fuel-displaced adapter with Oil communication in supporting bearing base, the other end provided with fuel-displaced pipe connecting flange and be connected to, air blast cooling but thin oil lubricant petrol station.

5. a kind of large centrifugal blower fan antifriction-bearing housing group according to claim 4, the spring bearing, which is covered, to be provided with Filler oil sealing III, the filler oil sealing III are identical with the filler oil sealing I structures in thrust bearing group, wherein oil baffle disc III and oil Packing material III is sequentially sleeved on main shaft from inside to outside, and filler oil sealing III is fixed in support-side by bolt and covered, dust cap III, which is fixed in by bolt in filler oil sealing III outside, dust cap III inwalls annular groove, places felt collar, the oil-sealed stuffer III is located between filler oil sealing III and main shaft, and setting is left between filler oil sealing III internal end surface and oil baffle disc III Gap, is contacted between oil-sealed stuffer III and main shaft by the affixed pressure thights of dust cap III.

6. a kind of large centrifugal blower fan antifriction-bearing housing group according to claim 1, it is characterised in that：Pass through frictional force The calculating of square, spring bearing selects self-aligning roller bearing 22232CC/W33；Thrust bearing selects self-aligning roller bearing 22332CC/ W33；It is dilute from 3 Fans configuration 1 by spring bearing moment of friction and thrust bearing moment of friction calculation bearing caloric value Oil lubrication petrol station.

7. a kind of large centrifugal blower fan antifriction-bearing housing group according to claim 1, it is characterised in that：The thrust shaft Hold group, the close casing side of spring bearing group is respectively arranged with the thrust radiating wind wheel of centrifugation open type, support radiation air wheel suit It is fixed on blower fan main shaft.