CN206398013U - Gear box of double-screw extruder - Google Patents

Abstract

The utility model discloses a kind of gear box of double-screw extruder, including casing, input shaft, transition axis, the first output shaft, the second output shaft are provided with casing, transition axis is formed in one axle, passes through first gear engaged transmission between input shaft and the first output shaft；First output shaft and transition axis are by second gear engaged transmission, and transition axis drives the second output shaft rotation by the 3rd gear；First gear, second gear and the 3rd gear are modified helical cylinder gear；The input shaft is connected by bearing with body pivot, and oil scraper ring and the disc used cooperatively with oil scraper ring are cased with the input shaft in the outside of link position mounting hole；The oil scraper ring is arranged at intervals with disc on input shaft.Such reduction box design, modified helical cylinder gear improves bearing capacity, and transition axis is integrally formed raising transmission accuracy；Using the mutual cooperation of disc and oil scraper ring, oil body is dredged into back way to cycle oil, the Seepage of gear box of double-screw extruder input shaft is efficiently solved.

Description

Gear box of double-screw extruder

Technical field

The utility model is related to a kind of gear box of double-screw extruder.

Background technology

It is well known that double screw extruder, which has, forces extrusion, high-quality, applied widely, long lifespan, shear rate Small, immeasurable to be not easily decomposed, knead the features such as plasticizing capacity is good, reductor is used as transmission transmission equipment, it is necessary to have high rotating speed, high The characteristic of moment of torsion.Such performance structure input shaft rotating speed is higher, can cause the problems such as oil leak and heating；Profit inside especially Lubricating oil seepage from inside to outside easily with rotation, especially inputs shaft position oil leak serious.Prior art, which is badly in need of one kind, to prevent The gear box of double-screw extruder of leak-stopping oil.

Utility model content

The purpose of this utility model is to overcome defect present in prior art can prevent double spiral shells of oil leak there is provided a kind of Bar extruder gearbox.

To achieve the above object, the technical solution of the utility model there is provided a kind of gear box of double-screw extruder, bag Include casing, be provided with input shaft, transition axis, the first output shaft, the second output shaft in casing, transition axis is formed in one axle, input Pass through first gear engaged transmission between axle and the first output shaft；First output shaft and transition axis are engaged by second gear to be passed Dynamic, transition axis drives the second output shaft rotation by the 3rd gear；Input shaft, transition axis, the first output shaft, the second output shaft lead to Cross mounting hole to be rotatably arranged in casing, closure be provided with casing interior installing hole, adjustment ring is provided between each axle and closure, First gear, second gear and the 3rd gear are modified helical cylinder gear；

The input shaft is connected by bearing with body pivot, and gear is cased with the input shaft in the outside of link position mounting hole Oil ring and the disc used cooperatively with oil scraper ring；The oil scraper ring outer rim is fixed with casing, is left between inner edge and input shaft Spacing；The oil scraper ring bottom is provided with oil leakaging port, and the bottom half is provided with the way to cycle oil coordinated with oil leakaging port；It is described to get rid of oil Ring include the disc plate that is radially arranged along input shaft and be vertically installed in disc plate inner edge get rid of oil-collecting endless tube, it is described to get rid of collection Oil-gap was left between oil ring pipe outer wall and oil scraper ring inner edge；The oil scraper ring is arranged at intervals with disc on input shaft.

Such reduction box design, good seal performance, modified helical cylinder gear improves bearing capacity, reduces noise, adjustment ring Ensure assembly precision, transition axis is integrally formed raising transmission accuracy；Simultaneously using the mutual cooperation of disc and oil scraper ring, by oil Body dredges back way to cycle oil, efficiently solves the Seepage of gear box of double-screw extruder input shaft, greatly reduces The labor intensity of component failure processing, improves the practicality and reliability of equipment.

It is used as preferred, casing split casting cooperation casing for above and below.Assembling is easy in such design.

As preferred, the oil scraper ring includes the oil scraper ring plate being radially arranged along input shaft and is vertically installed in oil scraper ring The gear oil-collecting endless tube of plate outer rim, the gear oil-collecting endless tube is integrally formed with oil scraper ring plate, the gear oil-collecting endless tube outer rim and casing It is fixed, oil scraper ring plate inner edge and get rid of and left oil-gap between oil collecting ring pipe outer wall.Such design, when oil body is got rid of from input shaft When spilling next, it is collected and is gathered on gear oil-collecting endless tube and oil scraper ring plate inwall, converged under gravity along oil scraper ring plate Oil leakaging port, a small amount of oil body enters from oil-gap excessively gets rid of oil-collecting endless tube.

As preferred, the disc plate was arranged at the fuel-displaced side of oil-gap.Such design is easy to utilize gear oil Ring stop is most to get rid of spilled oil body.

As preferred, get rid of oil-collecting endless tube and be provided with the pin hole fixed with input shaft, pin hole provided with alignment pin, institute State and get rid of oil-collecting endless tube and be integrally formed with disc plate, oily tip is is got rid of in the disc plate outer end.Such design is beneficial to get rid of The fixation of oil ring, gets rid of oily tip and is beneficial to form oil body disengaging disc plate, stopped by oil scraper ring plate.

As preferred, the disc plate is the relatively thin dish-shaped plectane in middle part thicker end portion, the dish-shaped plectane surface Offer oil guide groove.Such design is beneficial to the oil body on disc plate is dredged and thrown away.

Advantage and beneficial effect of the present utility model are：Such reduction box design, good seal performance, modified helical cylinder gear Bearing capacity is improved, noise is reduced, adjustment ring ensures assembly precision, and transition axis is integrally formed raising transmission accuracy；It is simultaneously sharp With the mutual cooperation of disc and oil scraper ring, oil body is dredged into back way to cycle oil, double screw extruder gear is efficiently solved The Seepage of case input shaft, greatly reduce component failure processing labor intensity, improve equipment practicality and can By property.

Brief description of the drawings

Fig. 1 is the utility model structural representation；

Fig. 2 is that the utility model cooling line connects sketch；

Fig. 3 is the utility model input shaft position seals structure enlarged diagram；

Fig. 4 is the oil retainer structure schematic diagram that the utility model carries oleophobic lines；

Fig. 5 is the oil retainer structure sectional view that the utility model carries oleophobic lines；

Fig. 6 is the disc structural representation that the utility model is provided with oil guide groove.

In figure：1st, casing；2nd, input shaft；3rd, transition axis；4th, the first output shaft；5th, the second output shaft；6th, first gear；7、 Second gear；8th, the 3rd gear；9th, adjustment ring；10th, oil scraper ring；18th, cooling cavities；19th, super heat-conductive pipe；20th, coolant；21、 Jacket layer；22nd, cooling line 23, water inlet end；24th, water side；25th, micro pump；26th, box body of speed reducer heating high-temperature area； 27th, box body of speed reducer heating relative low temperature region；101st, disc；201st, spiral labyrinch seal groove；401st, alignment pin；501st, keep off Oil ring；601st, oil leakaging port；701st, bearing；801st, way to cycle oil；901st, disc plate；1001st, oil-collecting endless tube is got rid of；1101st, oil is kept off Ring flat-plate；1201st, oil-collecting endless tube is kept off；1301st, oily tip is got rid of；1401st, oil guide groove；1501st, oil-collecting groove；1601st, oleophobic lines； 1701st, end cover；1801st, Oil Guide breach.

Embodiment

With reference to the accompanying drawings and examples, embodiment of the present utility model is further described.Implement below Example is only used for clearly illustrating the technical solution of the utility model, and protection model of the present utility model can not be limited with this Enclose.

As shown in figs 1 to 6, a kind of gear box of double-screw extruder, including the cooling cavities 18 being arranged on outside casing 1, institute State to be filled with coolant 20, the cooling cavities 18 in cooling cavities 18 and be additionally provided with super heat-conductive pipe 19, the super heat-conductive pipe 19 Contacted with coolant 20.

Cooling cavities 18 is arranged on box body of speed reducer heating high-temperature area 26, and cooling cavities 18 is by jacket layer 21 and casing 1 Outer wall encloses closed composition.

It is additionally provided with outside the casing 1 in cooling line 22, cooling line 22 and is filled with coolant 20, the cooling line 22 are close to set with outer case 1, and twist, the cooling line 22 includes water inlet end 23 and water side to the cooling line 22 24, the water inlet end 23 and water side 24 are connected with cooling cavities 18 respectively.

Connected between the water inlet end 23 and cooling cavities 18 by micro pump 25.

Cooling line 22 is arranged on the heating relative low temperature of box body of speed reducer 1 region 27.

Embodiment 1

Double screw extruder includes being provided with input shaft 2 in casing 1, casing 1, transition axis 3, the output of the first output shaft 4, second Axle 5, transition axis 3 is formed in one axle, by the engaged transmission of first gear 6 between the output shaft 4 of input shaft 2 and first, meanwhile, One output shaft 4 and transition axis 3 are by the engaged transmission of second gear 7, and transition axis 3 drives 5 turns of the second output shaft by the 3rd gear 8 Dynamic, the split casting of casing 1 is coordinates casing 1 up and down, input shaft 2, transition axis 3, the first output shaft 4, the second output shaft 5, passes through Mounting hole is rotatably arranged in casing 1, and closure is provided with the interior installing hole of casing 1, and adjustment ring is provided between each axle and closure 9, input shaft 2, the first output shaft 4 and the second output shaft 5 connect section and are provided with double oil seal, and input shaft 2 and the first output shaft 4, second are defeated The double oil seal that the two ends of shaft 5 are set is labyrinth oil seal；The bearing of input shaft 2 is provided with oil scraper ring 10, first gear 6, second gear 7 It is modified helical cylinder gear with the 3rd gear 8；

Box body of speed reducer heating high-temperature area 26 is first gear 6, second gear 7, the casing 1 of the position of input shaft 2 It is outside；The heating relative low temperature of box body of speed reducer 1 region 27 is the 3rd gear 8, the first output shaft 4 and the institute of the second output shaft 5 are in place Outside the casing 1 put；Cooling cavities 18 be arranged on box body of speed reducer heating high-temperature area 26, cooling cavities 18 by jacket layer 21 with The outer wall of casing 1 encloses closed composition；

It is filled with the cooling cavities 18 in coolant 20, the cooling cavities 18 and is additionally provided with super heat-conductive pipe 19, it is described Super heat-conductive pipe 19 is contacted with coolant 20；It is additionally provided with outside the casing 1 in cooling line 22, cooling line 22 filled with cooling Liquid 20, the cooling line 22 is close to set with outer case 1, and twist, the cooling line 22 is wrapped the cooling line 22 Water inlet end 23 and water side 24 are included, the water inlet end 23 and water side 24 are connected with cooling cavities 18 respectively.

Connected between the water inlet end 23 and cooling cavities 18 by micro pump 25.

Such reduction box design, good seal performance, modified helical cylinder gear improves bearing capacity, reduces noise, adjustment ring 9 Ensure assembly precision, transition axis 3 is integrally formed raising transmission accuracy；Coolant 20 is maintained compared with low temperature by super heat-conductive pipe 19 Scope is spent, and coolant 20 contacts cooling with casing 1, maintains the temperature of whole reductor.Using super heat-conductive pipe 19 to coolant 20 are cooled down, simple in construction, eliminate the recycle unit of coolant 20, and cooling effectiveness is higher；By setting cold on casing 1 But pipeline 22, it is possible to use the microcirculation of cooling line 22 is cooled down to the region low in calories of casing 1, it is ensured that these regions Operating temperature, particularly under summer high-temperature environment, can alleviate the cooling pressure in cooling cavities 18；Pass through Miniature water simultaneously Pump 25 causes the formation of coolant 20 of coolant 20 and cooling cavities 18 in cooling line 22 to circulate, and can so cause cooling Coolant 20 in pipeline 22 is changed, while can also facilitate the coolant 20 in cooling cavities 18 to flow, is accelerated and superconduction The heat exchange of heat pipe 19, kills two birds with one stone.

Embodiment 2

Optimize as one kind to embodiment 1, further by the sealing effectiveness of the strong position of input shaft 2, the input shaft 2 is pacified Dress is connected in hole by bearing 701 with input shaft 2；Oil scraper ring 501 is cased with input shaft 2 on the outside of the mounting hole and oily with gear The disc 101 that ring 501 is used cooperatively；The outer rim of oil scraper ring 501 is fixed with casing, between being left between inner edge and input shaft 2 Away from；The bottom of oil scraper ring 501 is provided with oil leakaging port 601, and the bottom half is provided with the way to cycle oil coordinated with oil leakaging port 601 801；The disc 101 includes the disc plate 901 being radially arranged along input shaft 2 and is vertically installed in disc plate 901 Edge gets rid of oil-collecting endless tube 1001, and described get rid of left oil-gap between the outer wall of oil-collecting endless tube 1001 and the inner edge of oil scraper ring 501；It is described Oil scraper ring 501 is arranged at intervals with disc 101 on input shaft 2.

The oil scraper ring 501 includes the oil scraper ring plate 1101 being radially arranged along input shaft 2 and is vertically installed in oil scraper ring plate The gear oil-collecting endless tube 1201 of 1101 outer rims, the gear oil-collecting endless tube 1201 is integrally formed with oil scraper ring plate 1101, the gear oil-collecting The outer rim of endless tube 1201 is fixed with casing, and described the inner of gear oil-collecting endless tube 1201 is engaged with bearing 701；In oil scraper ring plate 1101 Edge and get rid of and left oil-gap between the outer wall of oil-collecting endless tube 1001.

The disc plate 901 was arranged at the fuel-displaced side of oil-gap.

Get rid of oil-collecting endless tube 1001 and be provided with the pin hole 401 fixed with input shaft 2, it is described to get rid of oil-collecting endless tube 1001 and get rid of oil Ring flat-plate 901 is integrally formed, and the outer end of disc plate 901 is to get rid of oily tip 1301.

When in use, oil body coordinates outer end to splash in the connection of input shaft 2 and bearing 701, and oil scraper ring is splashed to first On 501, specific major part is splashed in the joining place and its neighboring area of oil scraper ring plate 1101 and gear oil-collecting endless tube 1201, in gear Oil body is converged on oil scraper ring plate 1101 under the guiding of oil-collecting endless tube 1201, effect of the oil body on oil scraper ring plate 1101 in gravity Under, flow downward, finally converge in oil leakaging port 601, so as to flow back to inner chamber from way to cycle oil 801；Small part oil body is between oil excessively Gap, which enters, gets rid of oil-collecting endless tube 1001, under the outside seepage trend of oil body, disc plate 901 is stepped into, in the work of centrifugal force Under, throw away, into the oil-blocking action of next oil scraper ring 501, so move in circles from oily tip 1301 is got rid of, get rid of gear and coordinate anti- Most permeability is stopped.

Embodiment 3

As the further optimization to embodiment 2, oil scraper ring 501 and disc 101 and its labyrinth seal groove are carried out Optimization, the disc plate 901 is the relatively thin dish-shaped plectane in middle part thicker end portion, and the dish-shaped plectane surface offers oil guide groove 1401。

A kind of mode of grooving of oil guide groove 1401：Radial direction of the oil guide groove 1401 along dish-shaped plectane is opened up.So Design thrown away beneficial to oil body on dish-shaped plectane along oil guide groove 1401 to outward flange, improve and throw away efficiency and dynamics, just In the collection of the next step of oil scraper ring 501.

Another mode of grooving of oil guide groove 1401：The oil guide groove 1401 is prolonged along dish-shaped plectane center to outer helix Stretch.Such design is thrown away on dish-shaped plectane beneficial to oil body along oil guide groove 1401 to outward flange, improve throw away efficiency and Dynamics, is easy to the collection of the next step of oil scraper ring 501.

The joining place of the oil scraper ring plate 1101 and gear oil-collecting endless tube 1201 is provided with oil-collecting groove 1501, the oil-collecting groove 1501 connect with oil leakaging port 601；The surface of oil scraper ring plate 1101 is provided with oleophobic lines 1601, and the oleophobic lines 1601 is in ring Shape, the annular lower end of oleophobic lines 1601 is connected with oil leakaging port 601.Such design is beneficial to splash in oil scraper ring plate 1101 With the oil body of the joining place of gear oil-collecting endless tube 1201（Most of oil body）Collect in oil-collecting groove 1501, and along oil-collecting groove 1501 discharge from oil leakaging port 601；Remaining a small amount of oil body prevents it to greatest extent along oleophobic lines 1601 to oil leakaging port 601 Into oil-gap.

End cover 1701 is additionally provided with the input shaft 2, the end cover 1701 is connected with box sealing, described close Lid 1701 is blocked to be provided with the via of input shaft 2, the via of input shaft 2 provided with the spiral labyrinth with the fitted seal of input shaft 2 Seal groove 201.Sealed between such design input shaft 2 and end cover 1701 by spiral labyrinch seal groove 201.Enter One step improves sealing effectiveness.

The hand of spiral of spiral labyrinch seal groove 201 is with rotation direction on the contrary, under the spiral labyrinch seal groove 201 End is provided with Oil Guide breach 1801, and the Oil Guide breach 1801 is connected with way to cycle oil 801.Such design make use of spiral labyrinth The hand of spiral of seal groove 201 mutually inhibits oil body to expand in the rotation of input shaft 2 to the outside of input shaft 2 on the contrary with rotation direction Dissipate, serve last oil-leakage-prevention effect.

During assembling, the form and position tolerance of gear housing is first checked, checks whether installation sealing structure position has deformation, if circle Degree will be then modified more than 0.3mm, to ensure that gear-box does not produce interference and friction in the course of the work.

Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art For art personnel, the front lower of the utility model technical principle is not being departed from, some improvements and modifications can also be made, these improvement Protection domain of the present utility model is also should be regarded as with retouching.

Claims (6)

1. a kind of gear box of double-screw extruder, it is characterised in that：Including casing, input shaft, transition axis, first are provided with casing Output shaft, the second output shaft, transition axis are formed in one axle, pass through first gear engagement between input shaft and the first output shaft and pass It is dynamic；First output shaft and transition axis are by second gear engaged transmission, and transition axis drives the second output shaft to turn by the 3rd gear It is dynamic；Input shaft, transition axis, the first output shaft, the second output shaft are rotatably arranged in casing by mounting hole, casing interior installing hole Place is provided with closure, and adjustment ring is provided between each axle and closure, and first gear, second gear and the 3rd gear are that displacement is oblique Gear；

The input shaft is connected by bearing with body pivot, and oil scraper ring is cased with the input shaft in the outside of link position mounting hole With the disc used cooperatively with oil scraper ring；The oil scraper ring outer rim is fixed with casing, and spacing is left between inner edge and input shaft； The oil scraper ring bottom is provided with oil leakaging port, and the bottom half is provided with the way to cycle oil coordinated with oil leakaging port；The disc bag Include the disc plate being radially arranged along input shaft and be vertically installed in disc plate inner edge get rid of oil-collecting endless tube, it is described to get rid of oil collecting ring Oil-gap was left between pipe outer wall and oil scraper ring inner edge；The oil scraper ring is arranged at intervals with disc on input shaft.

2. gear box of double-screw extruder as claimed in claim 1, it is characterised in that：Casing split casting is up and down with mould assembling Body.

3. gear box of double-screw extruder as claimed in claim 2, it is characterised in that：The oil scraper ring is included along the input diameter of axle To the oil scraper ring plate and the gear oil-collecting endless tube for being vertically installed in oil scraper ring plate outer rim, the gear oil-collecting endless tube and oil scraper ring plate of setting It is integrally formed, the gear oil-collecting endless tube outer rim is fixed with casing, oil scraper ring plate inner edge and getting rid of was left between oil collecting ring pipe outer wall Oil-gap.

4. gear box of double-screw extruder as claimed in claim 3, it is characterised in that：The disc plate was arranged between oil The fuel-displaced side of gap.

5. gear box of double-screw extruder as claimed in claim 4, it is characterised in that：Oil-collecting endless tube is got rid of to be provided with and input shaft Alignment pin is provided with fixed pin hole, pin hole, the oil-collecting endless tube that gets rid of is integrally formed with disc plate, the disc plate Outer end is to get rid of oily tip.

6. gear box of double-screw extruder as claimed in claim 5, it is characterised in that：The disc plate is middle part thicker end The relatively thin dish-shaped plectane in portion, the dish-shaped plectane surface offers oil guide groove.