CN104088809B - A kind of high pressure blower - Google Patents
A kind of high pressure blower Download PDFInfo
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- CN104088809B CN104088809B CN201410256589.1A CN201410256589A CN104088809B CN 104088809 B CN104088809 B CN 104088809B CN 201410256589 A CN201410256589 A CN 201410256589A CN 104088809 B CN104088809 B CN 104088809B
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Abstract
The present invention relates to a kind of high pressure blower, belong to Fan Equipment technical field. described high pressure blower comprises wind bucket and motor, the output shaft of described motor stretches into wind bucket, and the inserting end at output shaft is fixed with fan blade, described wind bucket is fixed with the bearing cover of a circle on a side lateral surface of motor, the home position of described bearing cover offers through hole, bearing cover has a bearing block around through hole on a side side of motor, in described bearing block, be fixed with bearing, described bearing cover, bearing is grouped into by the one-tenth of following percentage by weight: C0.12-0.15%, Si0.25-0.30%, Mn0.50-0.80%, Cr0.50-0.80%, Mo0.05-0.10%, Cu≤0.20%, Ni≤0.10%, S≤0.025%, P≤0.025%, surplus is Fe. high pressure blower of the present invention is reasonable in design, long service life.
Description
Technical field
The invention belongs to Fan Equipment technical field, relate to a kind of high pressure blower.
Background technology
Air blast is to be mainly made up of parts such as motor, air cleaner, impeller, air chamber, bases, leans between bladeVolume-variation by air intake, compress, spue, due to impeller in body, turn round without friction, do not need to lubricate, make discharge gasBody is oil-containing not, is the desirable pneumatic transporting of the industry such as chemical industry, the food source of supplying gas. When use, along with the variation of pressure, flow changes veryLittle, but flow changes along with rotating speed, therefore the range of choice of pressure is very wide, and the selection of flow can be by selecting rotating speed reachNeed. Air blast kind is various, can be divided into Shandong formula air blast, high pressure blower etc., and wherein high pressure blower, is also high-pressure blastMachine, its inside is provided with fan blade, and in the time that fan blade rotates, due to the effect of centrifugal force, wind vane impels gas outwards motion forward,Thereby form a series of spiral helicine motions, the air between fan blade blade accelerate in the shape of a spiral rotation and by the gas outside the pump housingBody is clamp-oned side channel, and after its approaching side passage, gas is compressed, and be then returned to again between impeller blade and again accelerate to rotate,The degree that each impeller blade has increased compression and accelerated, along with the carrying out of rotation, the kinetic energy of gas increases, and makes along wing passage logicalThe gas pressure of crossing further increases, and final gas is extruded blade and discharges the pump housing by outlet.
As Chinese invention patent application (application number: 02822446.9) disclose a kind of high pressure blower, it comprises havingOne motor through axle wherein; The main impeller of being made up of a kind of carbon fiber-based composite material, this impeller is arranged on thisThe both sides of motor are also directly installed on this axle of this motor; Surround the blower casing of this impeller; With connection one drumThe center-aisle of one pressure opening of Blower Housing and a negative pressure opening of another blower casing; This center-aisle and this high pressureThe base construction of air blast is integral. Although this high pressure blower structure is comparatively compact, due to the bearing peace of this air blastBe contained in the front end of wind bucket, therefore enter the liquid such as the rainwater of wind bucket and easily enter motor and motor is caused along motor output shaftInfringement.
Summary of the invention
The present invention is directed to existing technology and have the problems referred to above, proposed a kind of high pressure blower, this high pressure blower energyEnough avoid liquid to enter motor, motor is played a protective role.
Object of the present invention can realize by following technical proposal: a kind of high pressure blower, comprises wind bucket and motor, instituteThe output shaft of stating motor stretches into wind bucket, and is fixed with fan blade at the inserting end of output shaft, it is characterized in that, described wind bucket is towards electricityThe bearing cover that is fixed with a circle on one side lateral surface of machine, the home position of described bearing cover offers through hole, bearingCover plate has a bearing block around through hole on a side side of motor, is fixed with bearing, above-mentioned output in described bearing blockAxle is through bearing, and output shaft is connected mutually with bearing inner race, and wherein, described bearing cover, bearing are by following percentage by weightOne-tenth be grouped into: C:0.12-0.15%, Si:0.25-0.30%, Mn:0.50-0.80%, Cr:0.50-0.80%, Mo:0.05-0.10%, Cu≤0.20%, Ni≤0.10%, S≤0.025%, P≤0.025%, surplus is that Fe and other can not be kept awayThe impurity of exempting from.
The sidewall home position of wind bucket offers centre bore, and motor, bearing cover and wind bucket are fixed together, motor defeatedShaft free end stretches in wind bucket through the centre bore of through hole and wind bucket successively, and fan blade is connected in the free end of output shaft, bearingCover plate is between wind bucket and motor, and bearing is connected in bearing block, and the lateral wall of output shaft and the madial wall of bearing inner raceLaminating is connected, and therefore when fan blade when work in wind bucket, the liquid such as rainwater that is inhaled into wind bucket can flow along output shaft, works as streamDuring to bearing place, can be stopped by bearing, avoid liquid to continue to flow into motor along output shaft, motor is played a protective role.Secondly, the bearing cover in high pressure blower of the present invention, Selection of Bearings wearability high carburizing bearing steel make, in order to obtainThe bearing cover of better performances, bearing, on the basis of the chemical composition of existing carburizing bearing steel G20CrMo, strict control eachThe composition proportion of alloying element, has newly increased Ni content, has further controlled the essential elements such as Si, Mn, Cu, and has reduced C, MoContent, improved the content of Cr, and in alloy technology field, the minor alteration of a composition can cause alloy propertyAcute variation, meanwhile, bearing cover, bearing alloy used, by the synergy producing between each alloying element, makes systemBearing cover, bearing there is higher hardness, wearability, contact fatigue strength, and good toughness, dimensionally stableProperty, anti-corrosion and cold and hot working performance, thereby improve the mechanical performance of high pressure blower, and extend the use longevity of high pressure blowerLife.
C element is a kind of basic element, and the content in bearing steel is higher, and the hardness of bearing steel is just higher, but along withThe increase of Bearing Steel, its plasticity, toughness, weldability variation thereupon. And carbon element content is excessive, can cause bearing steelAtmospheric corrosion resistance ability reduces greatly. In high pressure blower middle (center) bearing cover plate of the present invention, bearing bearing steel used, add suitableThe carbon of amount, can increase the hardness of bearing cover, bearing, shows, by the content of C element in bearing cover, bearing through great many of experimentsBe controlled between 0.12%-0.15%, in increasing bearing cover, bearing hardness, can ensure its weldability and at atmosphereIn corrosion resistance.
Si element adds in bearing cover, bearing as a kind of useful element, can not only increase bearing cover, bearingIntensity and hardness, also can be used as deoxidier and reducing agent in bearing cover, bearing, but can reduce bearing cover, bearingPlasticity, toughness. According to the effect of the selection of other elements and element silicon, the present invention adds at bearing cover, bearing in right amountSi element be 0.25%-0.30%.
Mn element can not only improve the intensity of bearing cover and bearing, also can slacken and eliminate sulphur at bearing cover, bearingIn harmful effect, and can improve the quenching degree of bearing cover, bearing. In bearing cover, bearing, work as Mn element and reach certainWhen degree, can make bearing cover, bearing there is higher wearability, and strengthen the cold brittleness under its low temperature, but excessive manganese meetingReduce Weldability and the resistance to corrosion of bearing cover, bearing. Therefore, in bearing cover, bearing by the content control of MnIn 0.50%-0.80% the best.
Cr element can not only make bearing cover, bearing at high temperature still can have high strength in bearing cover, bearing, withTime also can increase anti-wear performance and the corrosion resistance of bearing cover, bearing, also there is good fatigue durability, but can cause bearingThe toughness of cover plate, bearing and Plasticity Decreasing. Therefore consider in bearing cover in the present invention, bearing and add 0.50-0.80%Cr element.
It is the effect of crystal grain thinning that Mo is joined to effect maximum in bearing cover of the present invention, bearing. MaximizingGround increases intensity and the hardness of bearing cover, bearing, improves quenching degree and thermostrength and the machine of bearing cover, bearing simultaneouslyTool performance. When the Mo too high levels in bearing cover, bearing, can reduce on the contrary the toughness of bearing cover, bearing, and the price of MoCostliness, too much Mo can increase the cost of material. Therefore in bearing cover of the present invention, bearing, add the Mo of 0.05-0.10%.
The outstanding role of Cu in bearing cover, bearing is the weather-resistant that improves bearing cover, bearing, joins with PClose Use Limitation fruit particularly evident. When Cu content is more than 0.1%, it can effectively improve the intensity of bearing cover, bearing and toughProperty, but in the time that Cu content exceedes 0.20%, can reduce the welding performance of bearing cover, bearing, and increase bearing cover, bearingRed brittleness. The experiment proved that, in linear bearing bearing cover of the present invention, bearing, add the addition of C u, can effectively increase bearingThe stability of cover plate, bearing material, and improve intensity, toughness, the corrosion resistance of bearing cover, bearing.
Ni element can not only effectively improve the intensity of bearing cover, bearing in bearing cover, bearing, can ensure again axleHold cover plate, plasticity and toughness that bearing is good, and improve its quenching degree, corrosion resistance and weldability. When the part Ni unit addingElement, the raising of bearing cover, bearing intensity is comparatively obvious, but Ni element is a kind of scarce resource, price comparison costliness, too muchNi not only can increase production cost and also can exert an adverse impact to bearing cover, bearing. Therefore the present invention's bearing the most at lastNi control of element in cover plate, bearing is in 0.10%.
S is present in bearing cover, bearing as a kind of harmful element, and it can make bearing cover, bearing produce red brittleness.Through experimental results demonstrate, though S is harmful substance, if be present in bearing cover, bearing and do not affecting other with trace elementWhen performance, can prevent the decline of bearing cover, bearing portions performance, if by the scope control of S being not more than 0.025%, haveBe beneficial to the processing of bearing cover, bearing, and make the smooth surface of bearing cover, bearing.
P is the same with S, also can make the toughness of bearing cover, bearing and plasticity obviously decline, in the time that temperature reduces, thisPhenomenon is particularly serious, is referred to as cold brittleness, and P can make bearing cover, bearing welding performance reduce, make bearing cover, bearingClod wash variation. But P exists in bearing cover, bearing with trace element, be conducive to the processing characteristics of bearing cover, bearing.The experiment proved that, the content of P in bearing cover, bearing is controlled at while being not more than 0.025%, and P element is to bearing cover, bearingThe impact of performance is minimum, but can suitably improve the processing characteristics of bearing cover, bearing.
As preferably, described bearing cover, bearing are grouped into by the one-tenth of following percentage by weight: C:0.13%, and Si:0.28％，Mn：0.70％，Cr：0.70％，Mo：0.08％，Cu≤0.20％，Ni≤0.10％，S≤0.025％，P≤0.025%, surplus is Fe and other inevitable impurity.
As preferably, described bearing cover, bearing are grouped into by the one-tenth of following percentage by weight: C:0.12%, and Si:0.30％，Mn：0.50％，Cr：0.80％，Mo：0.05％，Cu≤0.20％，Ni≤0.10％，S≤0.025％，P≤0.025%, surplus is Fe and other inevitable impurity.
As preferably, described bearing cover, bearing are grouped into by the one-tenth of following percentage by weight: C:0.15%, and Si:0.25％，Mn：0.80％，Cr：0.50％，Mo：0.10％，Cu≤0.20％，Ni≤0.10％，S≤0.025％，P≤0.025%, surplus is Fe and other inevitable impurity.
Wherein, the preparation method of described bearing cover, bearing, comprises forging process and heat treatment; In forging process, begin to forgeTemperature is 1100 DEG C-1140 DEG C, and final forging temperature is 780 DEG C-830 DEG C; In heat treatment step, treat that temperature is 850 DEG C-950 DEG CShi Jinhang quenches, and is first incubated 2-4 hour after quenching; Tempering in the time that temperature is 470-520 DEG C, is incubated 3-4 hour again after tempering.
First forge the operation of after-baking and simplify production technology, reduce energy resource consumption, and can make equally foundry goods there is routinePerformance level after heat treatment. Due to the method hardening heat that can be rapidly heated immediately, so just shorten carbide againThe time of dissolving. Therefore, the performance of bearing cover, bearing is significantly improved.
In above-mentioned high pressure blower, described bearing block comprises the convex annular edge being connected on bearing cover side, onState the lateral wall of bearing outer ring and the madial wall tight fit on convex annular edge, the internal diameter of described through hole is less than the internal diameter on convex annular edge.Bearing outer ring clamping be connected in convex annular along in, the internal diameter of through hole is less than the internal diameter on convex annular edge, bearing one end can be againstOn bearing cover madial wall, therefore wind bucket madial wall also bearing play axial limiting effect.
In above-mentioned high pressure blower, in described bearing block, be also fixed with bearing shim, described bearing face is pressed onOn bearing shim, bearing shim is pressed on bearing cover side. Bearing shim can avoid bearing directly with bearing cover phaseContact, plays a protective role to bearing, also plays sealing function simultaneously, avoids liquid to enter motor.
In above-mentioned high pressure blower, described wind bucket has one around output shaft on a side side of bearing coverAnnular link slot, is fixed with oil sealing in described link slot. Oil sealing plays sealing function, avoids liquid runs down output shaft to flow.
In above-mentioned high pressure blower, described bearing cover is in the form of annular discs, and is connected on wind bucket side by bolt,Described wind bucket opposite side is fixed with wind lid on side. Wind lid is to be also bolted on wind bucket, easy accessibility.
Compared with prior art, this high pressure blower has the following advantages:
1, because bearing cover is between wind bucket and motor, bearing is connected in bearing block, therefore when the wind in wind bucketIn leaf when work,, the liquid such as rainwater that is inhaled into wind bucket can flow along output shaft, in the time flowing to bearing place, can be hindered by bearingGear, avoids liquid to continue to flow into motor along output shaft, and motor is played a protective role.
2, because wind bucket has an annular link slot around output shaft on a side side of bearing cover, in link slotBe fixed with oil sealing, therefore avoid liquid runs down output shaft to flow.
3,, owing to being also fixed with bearing shim in bearing block, bearing shim can be avoided bearing directly and bearing cover joinsTouch, bearing is played a protective role, also play sealing function, avoid liquid to enter motor simultaneously.
4, the bearing steel material of bearing cover, bearing is by reasonable compatibility, improves its hardness, wearability, contact fatigue strongDegree, and good toughness, dimensional stability, anti-corrosion and cold and hot working performance, thus the mechanical performance of high pressure blower improved,And extend service life of high pressure blower.
Brief description of the drawings
Fig. 1 is the structure explosive view of this high pressure blower.
Fig. 2 is the structure cutaway view of this high pressure blower.
Fig. 3 is the structure enlarged drawing at A place in Fig. 2.
In figure, 1, wind bucket; 11, link slot; 2, motor; 21, output shaft; 3, bearing cover; 31, through hole; 32, bearing block;33, convex annular edge; 4, fan blade; 5, bearing; 6, bearing shim; 7, oil sealing; 8, Feng Gai.
Detailed description of the invention
Be below specific embodiments of the invention by reference to the accompanying drawings, technical scheme of the present invention be further described,But the present invention is not limited to these embodiment.
As shown in Figure 1 and Figure 2, a kind of high pressure blower, comprises wind bucket 1 and motor 2, and the sidewall home position of wind bucket 1 is offeredHave centre bore, the output shaft 21 of motor 2 stretches into wind bucket 1, and is fixed with fan blade 4 at the inserting end of output shaft 21, and wind bucket 1 is towards electricityThe bearing cover 3 that is fixed with a circle on one side lateral surface of machine 2, the home position of bearing cover 3 offers through hole 31, motor2, bearing cover 3 and wind bucket 1 are fixed together, and output shaft 21 free ends of motor 2 pass the center of through hole 31 and wind bucket 1 successivelyHole is stretched in wind bucket 1, and fan blade 4 is connected in the free end of output shaft 21, bearing cover 3 between wind bucket 1 and motor 2, bearingCover plate 3 has a bearing block 32 around through hole 31 on a side side of motor 2, is fixed with bearing 5 in bearing block 32, outputAxle 21 is through bearing 5, and output shaft 21 is connected mutually with bearing 5 inner rings, therefore, in the time that the fan blade 4 in wind bucket 1 is worked, is inhaled into windThe liquid such as the rainwater of bucket 1 can flow along output shaft 21, in the time flowing to bearing 5 place, can be stopped by bearing 5, avoid liquid to continueContinue and flow into motor 2 along output shaft 21, motor 2 is played a protective role.
Specifically, shown in Fig. 3, bearing block 32 comprises that the convex annular being connected on bearing cover 3 sides is along 33, axleHold the lateral wall of 5 outer rings and the convex annular madial wall tight fit along 33, the internal diameter of through hole 31 is less than the internal diameter of convex annular along 33, axleHold 5 outer ring clampings and be connected in convex annular along in 33, the internal diameter of through hole 31 is less than the internal diameter of convex annular along 33, i.e. bearing 5 one end energyEnough be resisted against on bearing cover 3 madial walls, therefore wind bucket 1 madial wall also bearing 5 play axial limiting effect. In bearing block 32, go backBe fixed with bearing shim 6, bearing 5 end faces are pressed on bearing shim 6, and bearing shim 6 is pressed on bearing cover 3 sides, axleRim sheet 6 can avoid bearing 5 directly to contact with bearing cover 3, and bearing 5 is played a protective role, and also plays sealing simultaneouslyEffect, avoids liquid to enter motor 2. Wind bucket 1 has an annular around output shaft 21 and connects on a side side of bearing cover 3Access slot 11, is fixed with oil sealing 7 in link slot 11, oil sealing 7 plays sealing function, avoids liquid runs down output shaft 21 to flow. BearingCover plate 3 is in the form of annular discs, and is connected on wind bucket 1 side by bolt, and wind bucket is fixed with wind lid 8, wind lid 8 on 1 opposite side sideAlso be to be bolted on wind bucket 1, easy accessibility.
Wherein, above-mentioned high pressure blower middle (center) bearing cover plate, bearing are bearing steel, specify according to GB/T3203-82G20CrMo composition and mass percent thereof are: C:0.17-0.23%, and Si:0.20-0.35%, Mn:0.65-0.95%, Cr:0.35-0.65%, Mo:0.08-0.15%, Cu≤0.25%, S≤0.03%, P≤0.03%, surplus is that Fe and other can notThe impurity of avoiding. In order to obtain the good bearing cover of performance, bearing, on the basis of existing G20CrMo bearing steel chemical compositionUpper, on the basis that meets above-mentioned chemical composition, strictly control the composition proportion of each alloying element, determine composition and quality hundred thereofProportion by subtraction is: C:0.12-0.15%, Si:0.25-0.30%, Mn:0.50-0.80%, Cr:0.50-0.80%, Mo:0.05-0.10%, Cu≤0.20%, Ni≤0.10%, S≤0.025%, P≤0.025%, surplus is that Fe and other are inevitably assortedMatter.
Table 1: the composition of embodiment of the present invention 1-3 bearing cover, bearing and mass percent thereof
Embodiment 1
Take raw material, bearing by component and the mass percent thereof of bearing cover described in table 1 embodiment 1, bearingThe component of cover plate, bearing and mass percent thereof to bearing cover, bearing performance have a certain impact, it prepares workThe bearing cover of skill on final formation, bearing performance also have larger impact. The preparation side of described bearing cover, bearingMethod, comprises forging process and heat treatment; In forging process, initial forging temperature is 1110 DEG C, and final forging temperature is 810 DEG C; In heat treatmentIn operation, in the time that temperature is 860 DEG C, quench, after quenching, be first incubated 3 hours; Tempering in the time that temperature is 480 DEG C, after tempering againBe incubated 3 hours.
Embodiment 2
Take raw material, bearing by component and the mass percent thereof of bearing cover described in table 1 embodiment 2, bearingThe component of cover plate, bearing and mass percent thereof to bearing cover, bearing performance have a certain impact, it prepares workThe bearing cover of skill on final formation, bearing performance also have larger impact. The preparation side of described bearing cover, bearingMethod, comprises forging process and heat treatment; In forging process, initial forging temperature is 1100 DEG C, and final forging temperature is 780 DEG C; In heat treatmentIn operation, in the time that temperature is 850 DEG C, quench, after quenching, be first incubated 2 hours; Tempering in the time that temperature is 470 DEG C, after tempering againBe incubated 3 hours.
Embodiment 3
Take raw material, bearing by component and the mass percent thereof of bearing cover described in table 1 embodiment 3, bearingThe component of cover plate, bearing and mass percent thereof to bearing cover, bearing performance have a certain impact, it prepares workThe bearing cover of skill on final formation, bearing performance also have larger impact. The preparation side of described bearing cover, bearingMethod, comprises forging process and heat treatment; In forging process, initial forging temperature is 1140 DEG C, and final forging temperature is 830 DEG C; In heat treatmentIn operation, in the time that temperature is 950 DEG C, quench, after quenching, be first incubated 4 hours; Tempering in the time that temperature is 520 DEG C, after tempering againBe incubated 4 hours.
The bearing cover making in embodiment 1-3, bearing are carried out to performance test, and test result is as shown in table 2.
The bearing cover that table 2: embodiment of the present invention 1-3 makes, the performance test results of bearing
From table 1 and table 2, the bearing cover in high pressure blower of the present invention, Selection of Bearings wearability high carburizingBearing steel is made, and on the basis of the chemical composition of existing carburizing bearing steel G20CrMo, strictly controls the composition of each alloying elementProportioning, has newly increased Ni content, has further controlled the essential elements such as Si, Mn, Cu, and has reduced the content of C, Mo, has improvedThe content of Cr, has improved bearing cover, the hardness of bearing, wearability, contact fatigue strength, and good toughness, size are steadyQualitative, anti-corrosion and cold and hot working performance, thus the mechanical performance of high pressure blower improved, and extend the use longevity of high pressure blowerLife.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit. Technology neck under the present inventionThe technical staff in territory can make various amendments or supplements or adopt similar mode to replace described specific embodimentGeneration, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although more used the terms such as wind bucket 1, link slot 11, motor 2 herein, do not get rid of and use other termPossibility. Use these terms to be only used to describe more easily and explain essence of the present invention; They are construed to and are appointedWhat a kind of additional restriction is all contrary with spirit of the present invention.
Claims (9)
1. a high pressure blower, comprises wind bucket and motor, and the output shaft of described motor stretches into wind bucket, and stretching at output shaftEnd is fixed with fan blade, it is characterized in that, described wind bucket is fixed with the bearing cover of a circle on a side lateral surface of motor,The home position of described bearing cover offers through hole, and bearing cover has an axle around through hole on a side side of motorBearing, is fixed with bearing in described bearing block, and above-mentioned output shaft is through bearing, and output shaft is connected mutually with bearing inner race, wherein,Described bearing cover, bearing are grouped into by the one-tenth of following percentage by weight: C:0.12-0.15%, and Si:0.25-0.30%,Mn：0.50-0.80％，Cr：0.50-0.80％，Mo：0.05-0.10％，Cu≤0.20％，Ni≤0.10％，S≤0.025%, P≤0.025%, surplus is Fe and other inevitable impurity.
2. according to the high pressure blower described in claim 1, it is characterized in that, described bearing cover, bearing are by following weightThe one-tenth of amount percentage is grouped into: C:0.13%, and Si:0.28%, Mn:0.70%, Cr:0.70%, Mo:0.08%, Cu≤0.20%, Ni≤0.10%, S≤0.025%, P≤0.025%, surplus is Fe and other inevitable impurity.
3. according to the high pressure blower described in claim 1, it is characterized in that, described bearing cover, bearing are by following weightThe one-tenth of amount percentage is grouped into: C:0.12%, and Si:0.30%, Mn:0.50%, Cr:0.80%, Mo:0.05%, Cu≤0.20%, Ni≤0.10%, S≤0.025%, P≤0.025%, surplus is Fe and other inevitable impurity.
4. according to the high pressure blower described in claim 1, it is characterized in that, described bearing cover, bearing are by following weightThe one-tenth of amount percentage is grouped into: C:0.15%, and Si:0.25%, Mn:0.80%, Cr:0.50%, Mo:0.10%, Cu≤0.20%, Ni≤0.10%, S≤0.025%, P≤0.025%, surplus is Fe and other inevitable impurity.
5. according to the high pressure blower described in claim 1, it is characterized in that, the preparation method of described bearing cover, bearing,Comprise forging process and heat treatment; In forging process, initial forging temperature is 1100 DEG C-1140 DEG C, and final forging temperature is 780 DEG C-830DEG C; In heat treatment step, in the time that being 850 DEG C-950 DEG C, temperature quenches, after quenching, be first incubated 2-4 hour; Treat that temperature isTempering 470-520 DEG C time, is incubated 3-4 hour again after tempering.
6. according to the high pressure blower described in claim 1, it is characterized in that, described bearing block comprises and is connected in bearing coverConvex annular edge on side, the madial wall tight fit on the lateral wall of above-mentioned bearing outer ring and convex annular edge, the internal diameter of described through holeBe less than the internal diameter on convex annular edge.
7. according to the high pressure blower described in claim 1, it is characterized in that, in described bearing block, be also fixed with bearing gasketSheet, described bearing face is pressed on bearing shim, and bearing shim is pressed on bearing cover side.
8. according to the high pressure blower described in claim 1, it is characterized in that, described wind bucket is towards a side side of bearing coverOn face, there is an annular link slot around output shaft, in described link slot, be fixed with oil sealing.
9. according to the high pressure blower described in claim 1, it is characterized in that, described bearing cover is in the form of annular discs, and passes throughBolt is connected on wind bucket side, and described wind bucket opposite side is fixed with wind lid on side, and wind lid is to be also bolted on windOn bucket, easy accessibility.
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| CN201410256589.1A CN104088809B (en) | 2014-06-11 | 2014-06-11 | A kind of high pressure blower |
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| CN201410256589.1A CN104088809B (en) | 2014-06-11 | 2014-06-11 | A kind of high pressure blower |
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| CN111102233A (en) * | 2020-01-07 | 2020-05-05 | 北京中科科仪股份有限公司 | Bearing mounting structure and heat-conducting grease filling method |
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| JPH0717986B2 (en) * | 1985-03-16 | 1995-03-01 | 大同特殊鋼株式会社 | Alloy tool steel |
| US4917860A (en) * | 1989-01-10 | 1990-04-17 | Carondelet Foundry Company | Corrosion resistant alloy |
| JP3796949B2 (en) * | 1998-03-27 | 2006-07-12 | Ｊｆｅスチール株式会社 | Manufacturing method of steel wire rod for bearing |
| JP2000308301A (en) * | 1999-04-22 | 2000-11-02 | Hitachi Ltd | Electric blower |
| CN201747637U (en) * | 2010-05-24 | 2011-02-16 | 宁波升鸿机械设备有限公司 | Circulating fan |
| WO2013084800A1 (en) * | 2011-12-06 | 2013-06-13 | 日本精工株式会社 | Rolling bearing and method for producing same |
| CN103486064B (en) * | 2013-10-15 | 2015-12-02 | 宁波沪江电机有限公司 | A kind of blower |
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