CN2142756Y - Stepless speed-regulating differential of horizontal helical centrifugal - Google Patents
Stepless speed-regulating differential of horizontal helical centrifugal Download PDFInfo
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- CN2142756Y CN2142756Y CN 91220130 CN91220130U CN2142756Y CN 2142756 Y CN2142756 Y CN 2142756Y CN 91220130 CN91220130 CN 91220130 CN 91220130 U CN91220130 U CN 91220130U CN 2142756 Y CN2142756 Y CN 2142756Y
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Abstract
The utility model discloses a multifunctional stepless speed-regulating differential mechanism of horizontal helical centrifuges used for fixing box bodies. The utility model is a special differential mechanism of the horizontal helical centrifuges used for separating materials for industries of foods, environmental protection, ore dressing, chemical industry, textiles, petrifaction, municipal sewage treatment, etc. The primary structure comprises a differential system, a differential transmission system, a speed-regulating deceleration system and an automatic control alarm system. The differential system is made into the differential transmission system which comprises six gears by a planetary gear train; the speed-regulating deceleration system comprises four-grade gear deceleration mechanism. The utility model has many functions of differential speed, stepless speed-regulating, synchronous overload protection and automatic control alarm and has the advantages of simple structure and superior performance.
Description
The utility model horizontal screw centrifuge is suitable for doing food with static housing formula multifunctional stepless speed governing differential mechanism, the special-purpose differential mechanism of the horizontal screw centrifuge that industry separation of material such as environmental protection ore dressing, chemical industry, weaving, petrochemical industry, municipal sewage treatment are used.
Horizontal screw centrifuge is the fifties a kind of novel separation machinery that grows up, and China begins to produce from the seventies, all develops very soon in recent years both at home and abroad, is widely used in the industries such as food, environmental protection, ore dressing, chemical industry, weaving, petrochemical industry, municipal sewage treatment.
Axle rotation in horizontal screw centrifuge outer drum and the helical rotor, material to be separated enters in the rotary drum, the heavy phase material is deposited on the rotatory drum wall under centrifugal action, quiet phase thing is in the center, discharge by overfall subsequently, the coaxial rotation of outer drum and helical rotor exists a speed discrepancy, is rated speed 0.2%～3%, make helical rotor produce an axial thrust, sediment is pushed to slag notch discharge.
The speed discrepancy that horizontal screw centrifuge is inside and outside two is provided by differential mechanism, the domestic and international at present cycloidal-pin wheel formula differential mechanism that uses, the poor rotating speed that they can provide is definite during fabrication, a kind of poor rotating speed can only be provided, abroad, Japan, the U.S. and China all are this structures, and in fact various material properties differences, under centrifugal action, the sinking speed difference requires deslagging speed difference, difference rotating speed speed is required also different, have only the different speed ratio differential mechanisms of replacing to realize for the differential mechanism of fixed speed ratio.
And how much also different with a kind of material dregginess, require the difference rotating speed also should to change to some extent, the differential mechanism of fixed speed ratio is with regard to stepless speed regulation so, friction-type stepless speed regulation differential mechanism has been studied by France, and West Germany has developed hydraulic type stepless speed regulation difference device, but complex structure, the maintenance difficulty costs an arm and a leg.
When the centrifuge sludge buildup too much; deslagging is not smooth; the frictional resistance that produces when blocking makes inside and outside two rotating speeds trend consistent; making poor rotating speed is zero; this process is called " synchronously ", and the differential mechanism of fixed speed ratio when taking place synchronously is because of speed ratio can not change; part will take place break, synchronous protective device must be set.
For the centrifuge operating mode is controlled, inside and outside two moment variations is to be reflected on the poor change in rotational speed, because spiral has changeed and has been enclosed in the rotary drum, sampling is very much a difficulty to the difference rotating speed, and abroad, France adopts torque sensor, West Germany adopts the sampling of fluid pressure type moment, the employing photoelectricity that has, magnetoelectricity are measured inside and outside two rotating speeds, import the computing circuit rotating speed of must going on business again.Because difference rotating speed sampling difficulty makes the centrifuge self-con-tained unit complicated and expensive.
The purpose of this utility model is at the horizontal screw centrifuge that above-mentioned horizontal screw centrifuger differential mechanism exists weak point to design a kind of novelty multifunctional stepless speed governing differential mechanism.It is the fully mechanical structure, and all part is installed in the casing in addition, has simple in structure, compact, cheap.Be applicable to any model, the horizontal screw centrifuge of any specification.
Horizontal screw centrifuge takes following mode to realize with static housing formula multifunctional stepless speed governing differential mechanism:
Primary structure is by differential system, differential transmission systems, and speed governing deceleration system and automatic control and alarm system form.
Differential system is made up of a planet circular system, be installed in the casing, it has a 2K-H negative sign N-W engagement planet circular system, a planetary wheel carrier is arranged, two centre wheels that the number of teeth equates, planetary gear has six, the number of teeth all equates, planet circular system becomes three pairs of uniform arrangements by six planetary gears, the engagement of each planetary gear and centre wheel, every pair of planetary gear composition engaging mechanism that intermeshes again.
Differential transmission systems is by the input belt pulley, the gears that four numbers of teeth equate, and one of them gear and the coaxial installation of outer drum flange are even also the outer drum rotating speed equals input speed; Two gear ratios are two gears of 1:2, and the coaxial installation of one of them gear wheel and planetary wheel carrier even also planetary wheel carrier deceleration input speed becomes 1/2, constitutes differential transmission systems jointly.
The speed governing deceleration system is made up of the level Four gear reduction, total reduction ratio is 100 reducing gear, and level Four is slowed down by two duplicate gears, two idle wheels, four monomer gears are formed, and their speed reducing ratio is respectively i1=4 i2=2.5 i3=4 i4=2.5.The overload-release clutch that limits moment is housed at input, in the deceleration middle-end magnetoelectricity rotating speed alarm joint is housed, linked to each other with electromagnetic slip clutches by shaft coupling at input, and electromagnetic slip clutches are driven by inboard belt pulley by main motor, speed governing power is imported thus.Wherein electromagnetic slip clutches are YTC series electromagnetic coupling asynchronous motor (claiming slip electric motor again), and folding removes squirrel cage asynchronous motor, changes into by belt pulley driving, and uses as constant-torque stepless speed-regulating.
The utility model is described in further detail below with reference to accompanying drawing.
Fig. 1 is the supporting use schematic diagram of the utility model and horizontal screw centrifuge.
Fig. 2 is a horizontal screw centrifuge static housing formula multifunctional stepless speed governing differential design schematic diagram.
Fig. 3 is the utility model automatic control and alarm system electrical control principle figure.
In the accompanying drawing 1: 1, horizontal screw centrifuge static housing formula multifunctional stepless speed regulator; 2, helical rotor; 3, slag notch; 4, outer drum; 5, adverse current mouth.In the accompanying drawing 2: 6, inboard belt pulley; 7, input belt pulley; 8, the little tooth of differential gearing is defeated; 9, level deceleration duplex tooth is not defeated; 10, differential gearing gear-B; 11, speed governing reduction gearing-F; 12, differ from rotating speed out splice going splice box; 13, rotating speed induction gear; 14, SZNB-5 magnetoelectricity speed probe; 15, SZMB-4 magnetoelectricity speed probe; 16, speed governing reduction gearing-G; 17, driving belt; 18, speed-regulating pulley power shaft; 19, end cap; 20, armature; 21, frame; 22, magnetic pole output shaft; 23, Exciting Windings for Transverse Differential Protection; 24, tachometer generator; 25, shaft coupling; 26, the first outer shaft sleeve axle; 27, speed governing reduction gearing-E; 28, first; 29, overload-release clutch driving disc spacing pressing; 30, overload-release clutch box; 31, overload-release clutch driven disc; 32, axle of carrier pulley; 33, little idle wheel; 34, second; 35, big idle wheel; 36, chopped-off head deceleration duplicate gear; 37, the 3rd; 38, differential gearing gear-C; 39, differential gearing gear-D; 40, flange sleeve; 41, the splined shaft that connects helical rotor; 42, outer drum adpting flange; 43, centre wheel; 44, planetary wheel carrier; 45, planetary gear; 46, casing; 47, centre wheel; 48, planetary gear; 49, differential gearing gear wheel; 50, speed governing reduction gearing-B; 51, differential shaft; 52, differential gearing gear-A; 53, power shaft; In the accompanying drawing 3: 54, red light; 55, amber light; 56, green light; 57, buzzer; 58, alarm bell; 59, SZNA-101A magnetoelectricity rotating speed indicator alarm.
RD, fuse; AK, robot control system(RCS) are cut-off switch; BK, the first rotating speed alarm contact switch; J1K, the first rotating speed alarm contact switch self-holding contact; J2N2, the second rotating speed alarm interlocking contact; J1N, the first rotating speed alarm interlocking contact; J1, the first rotating speed alarm relay coil; J master, main motor interlocking normally-closed contact relay coil; J2, the second rotating speed alarm relay coil; J2K, the second rotating speed alarm contact switch self-holding contact; N2K, the second rotating speed alarm contact switch.
With reference to accompanying drawing 2:
Differential system is by centre wheel＜43 〉,＜47 〉, planetary gear＜45 〉,＜48 〉, planetary wheel carrier＜44〉and constitute with the coaxial mounted splined shaft＜41〉that is connected helical rotor of centre wheel, differential shaft＜51〉and the coaxial mounted differential gearing gear wheel of planetary wheel carrier＜49 〉.A centre wheel＜43〉is in aggregates with the splined shaft that is connected helical rotor＜41〉to be output shaft, another centre wheel＜47〉and differential shaft＜51〉are in aggregates, be power shaft, planetary wheel carrier＜44〉and differential gearing gear wheel＜49〉are in aggregates, also are power shaft.
Differential transmission systems by: the input belt pulley＜7〉power shaft＜53 〉, differential gearing gear-B＜10 〉, differential gearing gear-A＜52 〉, differential gearing gear-C＜38 〉, differential gearing pinion＜8〉and the coaxial mounted differential gearing gear-D of flange sleeve＜40〉＜39 〉, outer drum adpting flange＜42〉is common to be constituted.Wherein import belt pulley＜7〉and power shaft＜53〉is coaxial, four identical gears of the number of teeth,＜10〉intermesh in＜52〉＜38〉＜39 〉, the most a travelling gear＜39〉and the coaxial installation of outer drum flange＜42〉are not output shaft, and two numbers of teeth are the gears engaged of 1:2, one of them gear wheel, being differential gearing gear wheel＜49〉and the coaxial installation of planetary wheel carrier＜44 〉, also is output shaft, and pinion is differential gearing pinion＜8 〉.The speed governing deceleration system is by electromagnetic slip clutches, speed-governing belt wheel shaft＜18 〉, end cap＜19 〉, armature＜20 〉, frame＜21 〉, magnetic pole output shaft＜22 〉, Exciting Windings for Transverse Differential Protection＜23 〉, tachometer generator＜24 〉, shaft coupling＜25 〉, first＜28 〉, the first outer shaft sleeve axle＜26 〉, overload-release clutch master driven disc＜29〉＜31 〉, speed governing reduction gearing-E＜27 〉, speed governing reduction gearing-F＜11 〉, speed governing reduction gearing-G＜16 〉, speed governing reduction gearing-H＜50 〉, size idle wheel＜33〉＜35 〉, head is level duplicate gear＜9〉＜36〉not, and the rotating speed induction gear＜13〉of device on second＜34 〉, magnetoelectricity rotating speed induction gear＜14〉＜15〉is common to be constituted.On first (axle is gone into axle)＜28〉electromagnetic slip clutches are housed in the speed governing decelerator, these electromagnetic slip clutches are YCT series electromagnetic coupling asynchronous motors, use belt pulley instead by main motor-driven, use as speed regulation by constant torque, first＜28〉other end is equipped with overload-release clutch, the level Four reducing gear is by the duplicate gear＜9〉＜36〉of a removable mounting on axle, the idle wheel＜33〉＜35〉of two removable mountings on axle, four monomer gears that are packed on the axle, the formation of intermeshing, magnetoelectricity rotating speed alarm joint is housed on second level deboost axle＜34 〉, final reduction gear becomes an integral body with differential shaft＜51 〉, and the differential shaft other end is equipped with central shaft＜47 〉.
The utility model operation principle and process:
With reference to accompanying drawing 2: differential mechanism is driven by input belt pulley＜7〉by main motor, and power divides two the tunnel; One the tunnel through power shaft＜53〉drive differential gearing gear-A, B, C, D drives outer drum adpting flange＜42〉by flange sleeve＜40〉and connects superincumbent outer drum rotation, because A, B, C, the D four gear numbers of teeth equate, so the outer drum rotating speed equals input speed, simultaneously, the power of power shaft drives through differential gearing pinion＜8〉again and the coaxial mounted differential gearing gear wheel of planetary wheel carrier＜44〉＜49〉rotation, because the two speed ratio is 1:2, so planetary wheel carrier is with half rotational speed of input speed, if differential shaft＜51〉does not have the rotating speed input, that splined shaft＜41〉that does not connect helical rotor is down synthetic in differential system planet circular system speed, to rotate with the outer drum same rotational speed.
Another road power drives speed-regulating pulley power shaft＜18〉and armature＜20〉rotation through inboard belt pulley＜6〉through driving belt＜17 〉, when Exciting Windings for Transverse Differential Protection＜23〉when not having electric current, armature idle running, produce magnetic field when having electric current to feed and drive magnetic pole output shaft＜22〉rotation, electric current large-slip more is more little, rotating speed is high more, carry out stepless speed regulation with regulating the exciting current size, magnetic pole output shaft＜22〉is input to governor gear-E＜27〉through shaft coupling＜25〉the overload-release clutch master driven disc＜29〉＜31〉and the first outer shaft sleeve axle＜26〉again, and through big or small idle wheel＜33〉＜31 〉, first and last level duplicate gear＜9〉＜36〉and governor gear-F, G, H＜11〉＜16〉＜50〉makes differential shaft＜51〉rotate with one of percentage input speed., after differential system planet circular system speed is synthetic, makes the splined shaft＜41〉and the outer drum adpting flange that connect helical rotor produce a differential, thereby make speed discrepancy of inside and outside two generations of centrifuge from the rotating speed of differential shaft input, reach the purpose of differential function.
With reference to accompanying drawing 3: the utility model automatic control and alarm system is that rotating speed based on the input of speed governing deceleration system promptly is the difference rotating speed.
When centrifuge is worked, inside and outside two moment variations will directly be reflected on the poor rotation speed change, and the difference rotating speed links to each other with the automatic control and alarm system through magnetoelectricity speed probe＜14〉＜15〉output with ten times of actual speed.
After the rotating speed of being on duty output arrives magnetoelectricity rotating speed alarm＜59 〉, instrument shows rotating speed ten multiple value of going on business, operating personnel can be according to showing that numerical value differs from rotational speed regulation, also have two rotating speed alarm outputs simultaneously on the instrument, automatic control circuit disconnects during starting, when normally carrying out autocontrol switch＜AK〉is closed, the automatic control and alarm system starts working, the first rotating speed alarm points is the position according to low a few percent to percent tens of poor rotating speed of different material optimum condition, determine in the actual debugging of concrete numerical value, when signal is sent in the first rotating speed alarm, amber light＜55〉is bright, green light＜56〉goes out, and buzzer＜57〉rings, and represents that promptly separating effect has departed from optimum separating point.The second rotating speed alarm points be centrifuge synchronously or be about to take place send when synchronous signal, the bright alarm bell of red light＜54〉＜58〉rings in the time of synchronously, cuts off main motor power by main motor interlocking normally-closed contact coil＜J master〉simultaneously and all stops.If realize interrupted deslagging, just interrupted input speed governing deceleration system moment can realize.
The utility model device has following performance characteristics:
1, allow differential mechanism long-term work under synchronous regime, the moment of torsion that the speed governing deceleration system is come in the time of synchronously advances less than in the differential system, if the moment of speed governing deceleration system can overcome the frictional resistance of sediment, then can stop synchronous generation, when this moment is paid intensity greater than engagement, malicious event will take place, but at this moment the power source of Po Huaiing is not the centrifuge from synchronous regime, but from the speed governing deceleration system, so overload-release clutch＜29〉＜30〉＜31〉is set on first＜28 〉, to avoid excessive moment input differential system, but when electromagnetic slip clutches dally, the speed governing deceleration system does not have moment output, allows centrifuge to turn round under synchronous regime, and this performance can make horizontal screw centrifuge not have axial thrust to cause that disturbance helps sedimentation at helical blade, and then input difference rotating speed deslagging, sedimentation deslagging is again realized interrupted deslagging again, enlarges the horizontal screw centrifuge scope of application.
No matter 2 main motors turn round under which kind of rotating speed, the rotating speed after slowing down of electromagnetic slip clutches input is exactly poor rotating speed, it make centrifuge inside and outside two when work moment variations can directly reflect by rotating speed, can save a complexity and expensive differential sampling apparatus, make differential mechanism itself become important component part of robot control system(RCS).
3, difference rotating speed control accuracy height, because centrifuge difference rotating speed is very little, therefore the speed governing deceleration system must have the speed reducing ratio up to tens to 100, like this speed error of electromagnetic slip clutches because of self, outer carrying, the passive error that causes of voltage is reduced to one of percentage, can reach very high accuracy, the deceleration system of speed governing simultaneously has a poor rotating speed output at second, its rotating speed is ten times of actual difference rotating speeds, and in succession on the joint of the magnetoelectricity rotating speed alarm＜59〉of robot control system(RCS), form robot control system(RCS) with the automatic control and alarm circuit, and order demonstrates the rotating speed of ten times of actual difference rotating speeds on rotational speed meters, improved ten times differing from the rotating speed pointing accuracy.
4, speed governing deceleration system drives electromagnetic slip clutches as stepless speed regulation power with main motor through driving belt, save a threephase asynchronous, the electric part cost is reduced, compact conformation, and can carry out stepless speed regulation to centrifuge is on-stream, horizontal screw centrifuge is obtained optimum condition created condition.
5, the electromagnetic slip clutches required input power used of speed governing is very little, only is 0.18%～2.7% of main motor current.
6, the utility model structurally is a box-type, when old-fashioned rotary differential mechanism work, centrifugal force differential mechanism fluid machine to around, oil starvation should take place and will cause centre bearing to burn in central portion, this device has then been stopped this phenomenon at all.Simultaneously old-fashioned differential mechanism is a cantilevered, and centrifuge principal axis holding capacity situation is worsened, and this device is a box-type, centrifuge principal axis is held avoid bearing radial pull, and change base bearing force-bearing situation has prolonged base bearing service life.
7, this device transmission efficiency height, outer drum output transmission efficiency is 0.96, and internal rotor output transmission efficiency is 0.94, and speed governing deceleration system output transmission efficiency is 0.88, and this device belongs to the shunting driving type, and its total transmission efficiency is between 0.94～0.95.
Claims (4)
1, a kind of have a differential system, differential transmission systems, the speed governing deceleration system, and the horizontal screw centrifuge of automatic control and alarm system composition static housing multifunctional stepless speed governing differential mechanism, it is characterized in that differential system is made up of a planet circular system, have two centre wheels, six planetary gears become three pairs of uniform arrangements, each planetary gear and centre wheel engagement, every pair of planetary gear intermeshes again; Differential transmission systems is formed one of them gear and the coaxial installation of outer drum flange with six gears, gear and the coaxial installation of planetary wheel carrier by power shaft, input belt pulley; The speed governing deceleration system is made up of the level Four gear reduction, and total reduction ratio is 100 reducing gear.
2, according to the described horizontal screw centrifuge of claim 1 static housing multifunctional stepless speed governing differential mechanism, the planet circular system that it is characterized in that differential system, by centre wheel, planetary gear, planetary wheel carrier is formed, and a centre wheel is in aggregates with the splined shaft that is connected helical rotor, be output shaft, another centre wheel and differential shaft are in aggregates to be power shaft, and planetary wheel carrier and differential gearing gear wheel are in aggregates, also is power shaft.
3, according to the described horizontal screw centrifuge of claim 1 static housing multifunctional stepless speed governing differential mechanism, it is characterized in that in the differential transmission systems that input belt pulley and power shaft are coaxial, four identical gears of the number of teeth intermesh, the last travelling gear and the coaxial installation of outer drum flange, be output shaft, the gear that two numbers of teeth are 1:2 intermeshes, and one of them gear wheel is differential gearing gear wheel (49) and the coaxial installation of planetary wheel carrier, also is output shaft.
4, according to the described horizontal screw centrifuge of claim 1 static housing multifunctional stepless speed governing differential mechanism, it is characterized in that on first (power shaft) electromagnetic slip clutches being housed in the speed governing deceleration system, these electromagnetic slip clutches are YCT series electromagnetic coupling asynchronous motors, remove the mouse-type Rotor Asynchronous Motor, use belt pulley instead by main motor-driven, use as speed regulation by constant torque; First other end is equipped with overload-release clutch, and the level Four reducing gear is by the duplicate gear of two removable mountings on axle; The idle wheel of two removable mountings on axle, four monomer gears that are packed on the axle, the formation of intermeshing is equipped with magnetoelectricity rotating speed alarm joint on the deboost axle of the second level, and final reduction gear becomes an integral body with differential shaft, and the differential shaft other end is equipped with centre wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91220130 CN2142756Y (en) | 1991-07-30 | 1991-07-30 | Stepless speed-regulating differential of horizontal helical centrifugal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91220130 CN2142756Y (en) | 1991-07-30 | 1991-07-30 | Stepless speed-regulating differential of horizontal helical centrifugal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2142756Y true CN2142756Y (en) | 1993-09-29 |
Family
ID=33760228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91220130 Expired - Fee Related CN2142756Y (en) | 1991-07-30 | 1991-07-30 | Stepless speed-regulating differential of horizontal helical centrifugal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2142756Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825749A (en) * | 2018-06-06 | 2018-11-16 | 珠海市万顺睿通科技有限公司 | A kind of differential mechanism for water treatment facilities |
-
1991
- 1991-07-30 CN CN 91220130 patent/CN2142756Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825749A (en) * | 2018-06-06 | 2018-11-16 | 珠海市万顺睿通科技有限公司 | A kind of differential mechanism for water treatment facilities |
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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 |