CN202991546U - External speed regulation type axial-flow fan at the lateral side of a motor - Google Patents
External speed regulation type axial-flow fan at the lateral side of a motor Download PDFInfo
- Publication number
- CN202991546U CN202991546U CN 201220701134 CN201220701134U CN202991546U CN 202991546 U CN202991546 U CN 202991546U CN 201220701134 CN201220701134 CN 201220701134 CN 201220701134 U CN201220701134 U CN 201220701134U CN 202991546 U CN202991546 U CN 202991546U
- Authority
- CN
- China
- Prior art keywords
- motor
- transmission case
- shaft
- cylinder body
- outer cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Provided is an external speed regulation type axial-flow fan at the lateral side of a motor, which mainly resolves the technical problems of a conventional axial-flow fan that the structure is complicated, examining and repairing are inconvenient and cost is quite high. The external speed regulation type axial-flow fan comprises an inner cylindrical shell (6), an outer cylindrical shell (7), an impeller (11), a transmission case (4), a speed adjusting device (16), a transmission shaft (14) and a motor (18). An angle of 90 DEG is disposed between an input shaft and an output shaft of the transmission case (4), and the input shaft is connected to the speed adjusting device (16) disposed at the outer side of the cylindrical shell and the motor (18) through a shaft coupling. The external speed regulation type axial-flow fan at the lateral side of a motor is advantageous in that work environment and bearing status of the motor are improved; work is more reliable and service lifetime is long; manufacturing cost of the whole machine is greatly reduced, and inspection and maintenance and blade adjusting are more convenient; soft start of the fan can be realized and overload can be prevented; the external speed regulation type axial-flow fan is widely applied in industries like metallurgy, chemicals, power plants and others, and is especially used for ventilation units in work occasions having explosion, high temperature, corrosion and others.
Description
Technical field
The utility model relates to a kind of ventilator, particularly a kind of axial fan.
Background technique
Ventilator is the universal machine that is widely used in the national economy every profession and trade.Divide centrifugal blower fan and the large class of axial-flow blower two.So-called axial-flow blower, just refer on axial section, the ventilator that air-flow flows along axial direction in the runner of rotation blade, from appearance, the housing of axial-flow blower is again the part in air channel, the blade of blower fan along the circumferential direction is evenly arranged on wheel hub, and wheel hub is fixedly mounted on along on the motor-shaft extending of axial direction layout.This blower fan is large because having flow, and volume is little, and the characteristics that pressure head is low are mainly used in the ventilation system of the large flow of various needs.By multistage-combination, improve pressure, and be applied to the ventilation system of mine, more general.The product of comparative maturity has FBCDZ series explosion suppression disrotatory axial main fan.This blower fan is basic identical with the structure of common axial-flow blower.Motor is axial arranged along cylindrical shell, and impeller is fixed on motor-shaft extending.But, consider and contain certain flammable part that bursts in the medium of conveying.Supporting motor requires to have explosion-proof performance, and, require motor and gas flow are isolated fully.So, be structurally the form of inside and outside suit with barrel designs.Annular space between inside and outside cylindrical shell is runner.Motor is arranged in inner core.And take airtight measure.Consider the structural strength of motor mount and the needs of motor ventilation heat radiation, several prismatics or oval ventilation duct are set between inside and outside cylindrical shell.Because motor is axially to install, length dimension is larger, considers again the needs that motor is installed, safeguarded and ventilate, and the cylindrical shell length of blower fan generally than motor long 500-800mm also, like this, makes the length dimension of whole blower fan larger.Usually, the length of simple fan main frame be impeller diameter 0.8-1.1 doubly.
The impeller of the axial-flow blower of existing structure is all to be fixedly supported upon on the shaft extension of motor front end, forms cantilever support.Due to, the weight of impeller is larger, and in running, existing dynamic load radially has again thrust load, and the shaft strength situation of motor front end is bad.The lubricating condition of bearing is also poor, although designed the outside oiling into and out of oil pipe from cylindrical shell.But because of many reasons, the lubrication problem of motor bearings never has fine solution, and motor bearings burns out and therefore wearing and tearing too early also cause the phenomenon of motor damage that generation is often arranged.The faults frequent such as motor or damage of bearings, its maintenance, service work are but and be not easy.Because motor is very heavy, there is again impeller to be fixedly mounted on axle, no matter be dismounting or lifting, workload and work difficulty are all quite large.Although the blower fan cylindrical shell is mostly the opposite opened removable structure, open part on cylindrical shell, unloads impeller, motor is taken out or installs, not the part nothing the matter.Just not saying need employ large tonnage crane, install again after disintegration, its installation precision is to be difficult to guarantee.
The maintenance work of motor is very large, and also there are suitable difficulty in the adjustment of blade and inspection.Be applied to the main fan in colliery, in order to adapt to the needs of mine working condition, usually need the angle of blade is adjusted, to change the size of its airflow pressure.Be in course of adjustment, common way is, in blower fan main frame cylindrical shell bottom, tourelle and track is set, and when needs are adjusted, main frame dragged away from the mounting point, and then then blade adjustment one by one, then is towed back to original position to main frame and installed.
In order to solve the bad problem of Axial-flow fan motor poor working environment and force-bearing situation, a kind of long-shaft fan arises at the historic moment.So-called long-shaft fan is arranged on motor the outside of blower fan main frame axial direction exactly, and impeller is bearing in by two fixing axle heads of axle bed supporting.Axle and the motor shaft of supporting impeller link up with major axis and coupling.Due to, the two ends of blower fan main frame also will connect the parts such as intake grill, slip ring, retention tower, silencing apparatus, inside and outside cylindrical shell, and major axis will pass these parts one by one, just can be connected on the motor outside body.The length of its transmission shaft has more than ten meter usually.There are at least seven, eight meters.Long transmission shaft like this, no matter and how make, with regard to the assurance of its installation precision, be exactly a very thorny thing.Impeller is bearing on two easy fixed mounting bases.The force-bearing situation of bearing does not have fundamental turn for the better yet, easily damages yet.
Be applied to the axial-flow blower of mine ventilation, the safe operation problem is especially crucial.The medium of processing is to contain flammable gas that can be quick-fried, and the operation of blower fan directly has influence on the safety of mine production and the person.Motor is arranged in runner, several factors impact all can cause the security of operation of blower fan.Therefore, motor is generally selected the product with explosion-proof performance.And the cost of anti-explosion motor or purchase price are generally the 1.3-1.5 of common electric machine doubly.Consideration because of factor of safety in motor price and structural design.The cost of mine explosion-proof axial fan is high, and is up to a million easily, individually up to ten million.
Be applied to the axial-flow blower of mine ventilation, have the problems referred to above.Be applied to high temperature, corrosion, the flue gas that water content is large is processed the axial-flow blower of occasion, equally also has some problems.That is exactly that motor is arranged in relatively airtight inner core, although there is ventilation duct to guarantee heat radiation.But radiating effect is unsatisfactory.The temperature rise speed of motor bearings is higher.For guaranteeing the trouble free service of motor, common way is to improve the security level of motor, causes the remarkable increase of cost.
Being in operation of ventilator, system is not unalterable to the requirement of air quantity, blast, usually will adopt machinery or electric device to regulate the rotating speed of blower fan, changes performance number with the requirement of adaptive system.To large fan, also require to have soft start and overload protective device to guarantee the start-up and operation safety of motor.Centrifugal blower generally all adopts hydraulic couplers or hydro viscous variable speed driver, satisfies above-mentioned requirements, still, the axial-flow blower of drive mechanism pattern, motor is arranged on the inside, air channel, is not easy to install arrangements for speed regulation, when needing speed governing, only way is to adopt RHVC, and large fan generally adopts high-voltage motor, and the cost of its high voltage converter is very expensive, such as the motor of a 1000Kw, the price of high voltage converter usually ten thousand yuan of 80-100, is 3-5 times of conventional machinery arrangements for speed regulation.
Summary of the invention:
For the technical problem of systems such as thoroughly solving the poor working environment of existing propeller fan motor and force-bearing situation is bad and maintenance and inspection are large, the utility model provides that a kind of work is more reliable, longer service life, cost of production significantly reduces and the adjustment of maintenance and inspection and blade is convenient motor side be to external regulable speed type propeller fan.
To achieve these goals, the technical solution adopted in the utility model is: it comprises housing, cylinder circle 10, impeller 11, transmission case 4, transmission shaft 14, arrangements for speed regulation 16, motor 18.Described housing is by inner barrel 6, outer cylinder body 7 coaxial packages and form annular space as air-flow path between two cylindrical shells, and inner core is set between outer cylinder body 7 and inner barrel 6 supports 2, and the external diameter of inner barrel 6 is less than the internal diameter of outer cylinder body 7, and the length of outer cylinder body 7 is greater than the length of inner barrel 6; Cylinder circle 10 is in mating connection with an end of outer cylinder body 7, at the in-built transmission case of inner barrel 6.The output shaft of the transmission case impeller 11 interior with being arranged on cylinder circle 10 is connected; The output shaft of transmission case and input shaft and 14 one-tenth 90 ° of layouts of transmission shaft.
Described impeller transmission device adopts case structure, and it comprises transmission case 4, impeller drive shaft and spring bearing; In outer cylinder body 7 inner chamber bottoms, inner core is set and supports 2, in inner barrel inner chamber bottom, bearing 3 is set, transmission case 4 is arranged on bearing 3, and the axis of transmission case 4 output shafts and input shaft can be at grade on horizontal plane, also can be not at grade.The axis of transmission case 4 output shafts and transmission shaft 14 also is mutually 90 °, and can optionally be arranged on same plane or two parallel Different Plane on; At interior oil storage cavity and the circulating water passage of arranging of transmission case 4; Shoe cream room and circulating water channel are not connected.Be respectively arranged with interior tube end-plate 5 at the two ends of inner barrel 7, the impeller 11 in the output shaft of transmission case passes interior tube end-plate and is arranged on cylinder circle 10 is connected.The output shaft of transmission case two the supporting between gear is set, simultaneously, relative set gear on the input shaft of transmission case 4, output shaft cog with input shaft on gear intermeshing.Gear can adopt circular-arc bevel gear transmission or crossed helical gears.
The outer end of transmission shaft 14 of the present utility model is connected with motor 18, and between transmission shaft 14 and motor 18, coupling and arrangements for speed regulation 16 is set.Motor 18 and arrangements for speed regulation 16 are arranged on motor support base 17.Transmission shaft 14 becomes 90 ° of layouts with the central axis of housing with center line.Transmission shaft one end and motor 18 output shafts join, and the other end passes outer cylinder body 7 and inner barrel 6 links with the transmission case input shaft.Described arrangements for speed regulation adopt hydraudynamic drive.
The utility model also can be split into up and down two-part at the diameter place with the inner barrel 6 of housing, outer cylinder body 7 along continuous straight runs, arrange between two halves up and down hinged seat 15 and bearing pin in outer cylinder body 7 one sides are hinged the up and down two halves, opposite side in outer cylinder body 7 lower half portions arranges handspike bearing 13, Electrohydraulic push rod 12 is set on handspike bearing 13, and outer cylinder body 7 upper half part opposite sides are connected with the upper end of Electrohydraulic push rod 12.Also can the urceolus peep hole be set and coordinate on a side of outer cylinder body 7 or top urceolus access plate 8 is installed; The inner core peep hole is set in the corresponding urceolus peep hole of inner barrel 6 position and coordinates inner core access plate 9 is installed.
the utility model is a large amount of improvement of carrying out on the propeller fan basis of conventional construction form, namely motor is arranged on lateral position outside the main frame cylindrical shell, draught fan impeller is installed on the output shaft of transmission case, use transmission shaft between transmission case and motor, arrangements for speed regulation, coupling connects, thereby machine operation environment and force-bearing situation are very significantly improved, work more reliable, long service life, particularly be applied to the explosion-proof occasions of needs such as colliery, can adopt common electric machine to replace anti-explosion motor, be applied to the high temperature occasion, need not consider the venting practice of motor, thereby the fabricating cost of complete machine is significantly reduced, and the adjustment of maintenance and inspection and blade is convenient.It can be widely used in the mine, and the industries such as metallurgy, chemical industry, power plant are especially for the ventilation plant with workplaces such as blast, high temperature, corrosion.
Description of drawings
Fig. 1 is forward structure cross-sectional schematic of the present utility model.
Fig. 2 is A-A generalized section of the present utility model, is also Figure of abstract of the present utility model.
Fig. 3 is transmission case forward structure schematic diagram of the present utility model.
Fig. 4 is transmission case side schematic view of the present utility model.
Fig. 5 is tube structure forward schematic diagram of the present utility model.
Fig. 6 is tube structure side schematic view of the present utility model.
Fig. 7 is the postrotational side schematic view of cylindrical shell of the present utility model.
Fig. 8 is two combination convection rotary type structure embodiment schematic diagram of the utility model.
Fig. 9 is that the utility model is to the example structure schematic diagram of axial flow rotary matched with blower all components.
In figure: the 1-support device, the 2-inner core supports, the 3-bearing, tube end-plate in 4-transmission case, 5-, the 6-inner barrel, the 7-outer cylinder body, 8-urceolus access plate, 9-inner core access plate, 10-cylinder circle, 11-impeller, 12-Electrohydraulic push rod, the 13-handspike bearing, 14-transmission shaft, 15-hinged seat, the 16-arrangements for speed regulation, 17-motor support base, 18-motor.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further details.
Embodiment 1, it comprises housing, cylinder circle 10, impeller 11, transmission case, coupling, arrangements for speed regulation and motor 18, described housing is by inner barrel 6, outer cylinder body 7 coaxial packages, and form annular space as air-flow path between two cylindrical shells, inner core is set between outer cylinder body 7 and inner barrel 6 supports 2, cylinder circle 10 is in mating connection with an end of outer cylinder body 7, and at the interior installation transmission case of inner barrel 6, the impeller 11 in passing interior tube end-plate and be arranged on cylinder circle 10 on the output shaft of transmission case is connected; Output shaft on transmission device becomes 90 ° of arranged at right angles with transmission shaft 14, motor output shaft, and formation is actively coupled.In outer cylinder body 7 inner chamber bottoms, inner core is set and supports 2, in interior tube inner chamber bottom, bearing 3 is set, transmission case 4 is arranged on bearing 3.The output shaft of transmission device and input shaft, and the axis of input shaft and transmission shaft 14 can optionally be arranged on same level, or be arranged on two parallel horizontal planes; Be provided with oil storage cavity and circulating water passage in transmission case 4; Be respectively arranged with interior tube end-plate 5 at the two ends of inner barrel 7, the impeller 11 in the output shaft of transmission case passes interior tube end-plate and is arranged on cylinder circle 10 is connected.Between two supportings of the output shaft of transmission case, gear is set, at the input shaft gear of going forward also to arrange, the tooth on output shaft and input shaft is intermeshing.Gear adopts intermeshing circular-arc bevel gear or crossed helical gears.Transmission shaft 14 links by coupling and the arrangements for speed regulation 16 and the motor 18 that are arranged in the cylindrical shell outside.The axial-flow blower of this structure, working environment and the force-bearing situation of motor are very significantly improved, work more reliable, long service life, particularly be applied to the explosion-proof occasions of needs such as colliery, can adopt common electric machine to replace anti-explosion motor, can be applicable to the high temperature occasion, need not consider the venting practice of motor.Thereby, manufacturing or the purchase cost of minimizing motor.In addition, the materials consumption of structural member reduces in a large number, and the fabricating cost of complete machine significantly reduces.Due to the improvement of structure, the adjustment of maintenance and inspection and blade is convenient.
It is the speed-changing gear box of case structure that transmission case 4 adopts, and the input output speed ratio of gearbox can be greater than or less than or equal 1, and input shaft and output shaft support by the bearing on casing; At interior oil storage space and the cooling water passage of arranging of transmission case 4, and isolation mutually.Cooling water mainly dispels the heat to the bearing of transmission case 4, and in case, Lubricant on Gear and bearing are lubricated with cooling.The inlet/outlet of the cooling water in case can be received outside cylindrical shell by pipeline, is connected with outdoor water supply line.The transmission shaft 14 of transmission case 4 can be connected with arrangements for speed regulation outside being arranged on the cylindrical shell lateral position by coupling and shorter transmission shaft 14, and arrangements for speed regulation 16 connect with the output shaft of motor 18, and impeller drive shaft connects with transmission shaft 14.Motor 18 axial directions are general vertical with the axial direction of cylindrical shell, but not necessarily on same level.Motor can not adopt product explosion-proof or that security level is higher, and can adopt common electric machine, only does simple rain-proof dust-proof measure and gets final product.
The gear of transmission case and bearing can by adopt thin oil lubricant and cooling method, effectively improve functional reliability and increase the service life.The length dimension of transmission case 4 is little a lot of than motor.And, need not consider the problems such as ventilation and heat radiation, the total length of main frame can reduce, and the materials consumption of unit and manufacture difficulty all have minimizing, and fabricating cost also will descend a lot.Simultaneously, the installing space of the whole unit of blower fan is reduced.Simultaneously, structurally be optimized and perfect, make it structure more compact, Inspection and maintenance is more simple and convenient.Electric machine external is outside cylindrical shell, and the transmission case in inner core need not taked strict airtight measure yet.
Unless housing need be made outside split type structure in consideration transportation problem, generally can make overall structure.Consult Fig. 1 to 9.
Arrangements for speed regulation also can adopt hydro viscous variable speed driver except adopting hydraulic couplers, and are arranged between transmission shaft 14 and motor 18.The working principle of this arrangements for speed regulation is: coupler rotor is filled with a certain amount of working solution in the chamber, the work wheel pump obtains mechanical energy from motor, and be converted into the liquid energy, the rotation of promotion turbine, turbine can be converted into mechanical energy to liquid, by output, drives working machine work, go round and begin again, the energy transmission between having realized from prime mover to the working machine.This device has advantages of following several respects: when being used for needing the fluid machinery (as blower fan, pump class) of speed governing, significant power savings is arranged, power saving rate can reach 20%～40%.Can make motor no-load starting, can utilize again its spike moment to make starting torque, improve its starting capability, shorten the motor starting time and make working machine lag behind the motor slow start.Energy coordinating power balance reduces the electrical network inrush current.Reduce and impact, prevent dynamic overload, the protection machine operation can not damaged because of overload.Simple in structure, reliable, the machinery-free wearing and tearing can be worked under the abominable condition of environment, need not special maintenance, long service life.
Adopt the hydraulic type mechanical adjustable speed drive, can realize the soft start of blower fan and prevent overload, the more important thing is, it can adjust the rotating speed of blower fan by adopting the hydraulic speed-regulating device, change the performance parameters such as airflow pressure, to adapt in the different operating process difference needs to air quantity and blast, realization " supplying as required (row) wind ", reach energy-conservation purpose, energy-saving effect is obvious.The workplace little to power of motor can not match arrangements for speed regulation, and motor output shaft directly and propeller shaft couplings.Consult Fig. 1 to Fig. 9, all the other are with embodiment 1.
Because the boundary dimension of transmission case 4 is less, the inner space is larger, and the maintainer can remove the access door on inside and outside cylindrical shell 7, enters in inner core or the annular space of 7 of inside and outside cylindrical shells, and transmission case 4 is carried out examination and maintenance, also can adjust blade.The axial-flow blower larger to type, the inner space is larger, and is freely movable when carrying out service work.Consult Fig. 1 to 9, all the other are with above-mentioned embodiment.
Embodiment 4, consider the maintenance issue of transportation problem or small-sized axial flow fan, and the technical program also can be made split type structure with cylindrical shell.The inner barrel 6 of housing, outer cylinder body 7 along continuous straight runs can be split into up and down two-part at the diameter place, arrange between two halves up and down hinged seat 15 and bearing pin in outer cylinder body 7 one sides are hinged the up and down two halves, opposite side in outer cylinder body 7 lower half portions arranges handspike bearing 13, Electrohydraulic push rod 12 is set on handspike bearing 13, and outer cylinder body 7 upper half part opposite sides are connected with the upper end of Electrohydraulic push rod 12.Consult Fig. 1 to 9, all the other are with above-mentioned embodiment.
According to propeller fan and the comparison of long-shaft type axial-flow blower to external regulable speed type propeller fan and conventional construction of the motor side of technique scheme design, following advantage is arranged:
1, modern design.Existing propeller fan, impeller are mostly to be fixed on the axle head of motor, are not fixed on transmission case.The impeller of large centrifugal fan has and is fixed on transmission case, still, between motor and transmission case, all connects by belt pulley or axle head coupling, and the axial direction of motor is generally parallel or coaxial with the axis of transmission case output shaft.The utility model is the transmission case of centrifugal blower structurally to be improved be transplanted on axial-flow blower.The structural feature that following several respects are arranged after improvement: the one, motor 18 is used transmission shaft 14 instead with the Placement of transmission case 4; The 2nd, the axial direction of motor 18 is vertical with the impeller-driven axis of transmission case 4.Simultaneously, the output shaft of transmission case 4 becomes 90 ° of layouts with input shaft direction on horizontal plane, and output shaft adopts dual-supporting, and the distance between the increase dual-supporting of trying one's best guarantees that the force-bearing situation of axle is good.The 3rd, transmission case is designed to export the gearbox that is greater than or less than or equals input speed, is different from common speed reducer.
2, low cost of manufacture.Although axial-flow blower is simple in structure,, be applied to the large fan of special operation condition occasion, motor is arranged in the blower fan cylindrical shell, consider explosion-proof, protection against the tide, anticorrosion, high temperature resistant.The cost of motor or purchase price are generally all very high.For the motor of same specification model, the anti-explosion motor that the colliery is used is than the high 30-50% of common electric machine, and to the high-temperature resistant axial-flow fan that power plant, steel mill use, it is high that the security level of motor is wanted, and fabricating cost is than high 20% left and right of common electric machine.To the moisture-proof anticorrosive axial-flow blower that the industries such as chemical industry are used, fabricating cost is higher.Adopt the motor side of the technical program to external regulable speed type propeller fan, can adopt common electric machine to replace anti-explosion motor and the higher motor of security level, only this is that cost just descends a lot.For example, mining 30# is to the axial flow rotary blower fan, and every Daepori three-way motor is approximately saved 200,000 yuan than anti-explosion motor.
After electric machine external, the designs simplification of blower fan inside, the cylindrical shell length of blower fan reduces approximately 1/3rd.Materials consumption reduces, and manufacturing process is simple, also will save many expenses.Or concerning the axial flow rotary blower fan, the expense of this part reduces 20,000 yuan nearly with mining 30#.
Adopt hydraulic couplers as startup, the arrangements for speed regulation of blower fan, the expense of increase than the expense that adopts high voltage start cabinet, also will be lacked relatively.
3, improve in operational reliability, Security and working life.The fault of axial-flow blower in running is mainly the problem of motor aspect, causes that as reasons such as overloads bearing burns out, and stops up the insufficient lubrication cause as oil supply pipeline, stops up as ventilation duct to cause that electric machine temperature rise is too high etc.Adopt transmission case and external motor, and increase the measures such as water cooling plant and thin oil lubricant in transmission case, the possibility that bearing burns out is greatly reducing, even damage is arranged, replacing also will facilitate a lot.Motor does not need oil supply pipeline to be lubricated, and does not need ventilation duct yet, has basically avoided the operation troubles of motor.Motor is arranged on outside housing, not with runner in medium contact, being applied to colliery discharging and containing the occasion of methane gas, stopped the possibility of blast fully.Safety in operation is greatly improved.
4, wide adaptability.The technical program outside cylindrical shell, not only is adapted to flammable use that can quick-fried operating mode occasion to electric machine external, as the ventilation in colliery.And be adapted to the operating mode occasion of high-temperature flue gas, as steel mill of power plant.In addition, after electric machine external, only need the less transmission case of boundary dimension in inner core, the randomness of inner diameter of steel flue size variation is larger, thereby make the degrees of freedom of fan blade and hub ratio design larger, wider with the performance number scope of plane No. blower fan, adaptability also is improved.
5, external dimension are few, save installing space.Adopt the electric machine external formula structure of the technical program, the Length Ratio motor length of transmission case is little a lot, and the inner core length that transmission case is installed also can reduce.Thereby blower fan main frame length can reduce 1/3rd to 1/2nd.
6, maintenance, safeguard and adjust more convenient.The axial-flow blower of conventional construction mode, the maintenance of motor and inspection must be taken outer cylinder body apart, and motor is taken out.When carrying out the adjustment of blade, need that whole blower fan is dragged away from the mounting point and just can carry out.Adopt the technical program, detachable through hole door is arranged on outer cylinder body, the inner core space that transmission case is installed is relatively spacious again.To large-scale axial-flow blower, personnel can directly enter in inner core and check, safeguard and adjustment work.To small-sized axial-flow blower, the blower fan cylindrical shell in the subdivision Position Design hinged seat and bearing pin, only need rotate to an angle upper half part of cylindrical shell along hinging shaft by Electrohydraulic push rod, personnel just can enter into inner barrel, and do not need complete machine is dragged away from the mounting point.
7, energy-saving effect is remarkable.Traditional propeller fan seldom has and adopts arrangements for speed regulation.Not guard system to the actual demand of airflow pressure how, blower fan is all with same rotation speed operation.Therefore, in industrial and mining enterprise, ventilator is all the big power consumer.Adopt the axial-flow blower of the technical program the same with centrifugal blower, can adopt hydraulic couplers to carry out speed governing, can not only accomplish " air feed as required ", and, certain energy-saving effect had.
Claims (8)
1. a motor side is to external regulable speed type propeller fan, it is characterized in that: it comprises housing, cylinder circle (10), impeller (11), transmission case (4), transmission shaft (14), arrangements for speed regulation (16) and motor (18), described housing is by inner barrel (6), outer cylinder body (7) coaxial package, form annular space between two cylindrical shells as air-flow path, and inner core is set between outer cylinder body (7) and inner barrel (6) supports (2), cylinder circle (10) is connected with an end of outer cylinder body (7), transmission case (4) is installed in inner barrel (6), output shaft one end at transmission case is installed impeller (11), the output shaft of transmission case (4) becomes 90 ° of layouts with transmission shaft (14).
2. motor side to external regulable speed type propeller fan, is further characterized in that according to claim 1: inner core is set in outer cylinder body (7) inner chamber bottom supports (2), supporting inner barrel (6); Transmission case (4) is arranged on the bearing (3) of inner barrel (6) downside, and output shaft becomes 90 ° of layouts with transmission shaft (14); Impeller drive shaft and transmission shaft (14) in the horizontal direction can be on same levels, also can two on parallel horizontal plane; Be respectively arranged with interior tube end-plate (5) at the two ends of inner barrel (7), pass interior tube end-plate at transmission case (4) output shaft and be connected with impeller impeller (11).
3. motor side to external regulable speed type propeller fan, is further characterized in that according to claim 1: described impeller transmission case adopts case structure; Be provided with oil storage cavity and circulating water passage in transmission case (4); Circulating water channel and oil storage cavity are not connected; Between two supportings of transmission case (4) output shaft, gear is set, the corresponding gear of establishing on the transmission case input shaft, the gear on output shaft and input shaft cog intermeshing.
4. motor side to external regulable speed type propeller fan, is further characterized in that according to claim 1: at the output shaft of transmission case and the driving gear on input shaft, adopt intermeshing circular-arc bevel gear or crossed helical gears.
According to claim 1 motor side to external regulable speed type propeller fan, be further characterized in that: the outer end of transmission shaft (14) is connected with motor (18), and between transmission shaft (14) and motor (18), coupling and arrangements for speed regulation (16) is set.
According to claim 1 motor side to external regulable speed type propeller fan, it is characterized in that: motor (18) and arrangements for speed regulation (16) are arranged on motor support base (17), and the axis of motor (18) and arrangements for speed regulation (16) becomes 90 ° of layouts with the central axis of blower fan cylindrical shell; The input shaft that the transmission shaft (14) that joins with motor (18) output shaft passes outer cylinder body (7) and inner barrel (6) and transmission case (4) links.
according to claim 1 motor side to external regulable speed type propeller fan, be further characterized in that: the inner barrel of housing (6), outer cylinder body (7) along continuous straight runs is split into up and down two-part at the diameter place, arrange between two halves up and down hinged seat (15) and bearing pin in outer cylinder body (7) one sides are hinged the up and down two halves, opposite side in outer cylinder body (7) lower half portion arranges handspike bearing (13), Electrohydraulic push rod (12) is set on handspike bearing (13), outer cylinder body (7) upper half part opposite side is connected with the upper end of Electrohydraulic push rod (12).
8. motor side to external regulable speed type propeller fan, is further characterized in that according to claim 1: the urceolus peep hole is set and coordinates on a side of outer cylinder body (7) or top urceolus access plate (8) is installed; The inner core peep hole is set in the corresponding urceolus peep hole of inner barrel (6) position and coordinates inner core access plate (9) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220701134 CN202991546U (en) | 2012-12-18 | 2012-12-18 | External speed regulation type axial-flow fan at the lateral side of a motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220701134 CN202991546U (en) | 2012-12-18 | 2012-12-18 | External speed regulation type axial-flow fan at the lateral side of a motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202991546U true CN202991546U (en) | 2013-06-12 |
Family
ID=48562730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220701134 Expired - Fee Related CN202991546U (en) | 2012-12-18 | 2012-12-18 | External speed regulation type axial-flow fan at the lateral side of a motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202991546U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047157A (en) * | 2012-12-18 | 2013-04-17 | 平安电气股份有限公司 | Motor side external speed regulating type axial flow fan |
| CN109185182A (en) * | 2018-09-11 | 2019-01-11 | 重庆冲能动力机械有限公司 | A kind of centrifugal impeller of energy quick response speed change is mechanical |
-
2012
- 2012-12-18 CN CN 201220701134 patent/CN202991546U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047157A (en) * | 2012-12-18 | 2013-04-17 | 平安电气股份有限公司 | Motor side external speed regulating type axial flow fan |
| CN103047157B (en) * | 2012-12-18 | 2015-12-23 | 平安电气股份有限公司 | Motor side external formula regulable speed type propeller fan |
| CN109185182A (en) * | 2018-09-11 | 2019-01-11 | 重庆冲能动力机械有限公司 | A kind of centrifugal impeller of energy quick response speed change is mechanical |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203394802U (en) | External type one-to-two counter-rotating axial-flow fan at lateral side of motor | |
| CN103486058B (en) | Motor side external formula one drag two counter-rotating axial fan | |
| CN203130565U (en) | Air and nitrogen oxide integration compressor for nitric acid | |
| CN104564717B (en) | Direct driven high-speed turbine vacuum pump and operation method thereof | |
| CN100497949C (en) | High voltage little flow rate chlorine compressor | |
| CN201461439U (en) | Pipeline shielding electric pump with internal circulation structure | |
| CN101988511B (en) | Pipeline shielding structural electric pump working in manner of internal circulation | |
| CN105090064A (en) | High-speed directly connected water vapor compressor | |
| CN103047157B (en) | Motor side external formula regulable speed type propeller fan | |
| CN201916218U (en) | Gear type air compressor for PTA (pure terephthalic acid) device | |
| CN202991546U (en) | External speed regulation type axial-flow fan at the lateral side of a motor | |
| CN113639029B (en) | Vortex oar engine reduction gearbox unit body | |
| CN201025264Y (en) | A high-pressure and small-flow chlorine compressor | |
| CN207513844U (en) | High-power high lift mono-hull sectional type horizontal multi-stage centrifugal pump | |
| CN201599199U (en) | Electric auxiliary water supply pump of nuclear secondary pump for 1000MW nuclear power station | |
| CN107605765A (en) | Centrifugal blower | |
| CN202301025U (en) | Roots compressor | |
| CN100398785C (en) | Miniature steam turbine combined with high-speed pump | |
| CN201696644U (en) | Tapered rotary valve | |
| CN202007882U (en) | Overdrive gear box for centrifugal fan | |
| CN204628054U (en) | A kind of stirring type disc | |
| CN2337531Y (en) | Vertical propeller dismountable water meter | |
| CN207621074U (en) | A kind of large flow single-stage cantilever SO2Centrifugal blower | |
| CN207960981U (en) | Centrifugal supercharger device | |
| CN202789710U (en) | Multistage centrifugal blower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20151218 |
|
| EXPY | Termination of patent right or utility model |