CN115071197A - Differential type screw propulsion deoiling machine - Google Patents

Abstract

The invention belongs to the technical field of machining equipment, and particularly relates to a differential spiral propelling deoiling machine which comprises a deoiling shell, wherein a separating cylinder is rotatably connected to an inner cavity of the deoiling shell, separating oil holes are distributed in the wall of the separating cylinder, a feeding channel is arranged on the deoiling shell, a scrap outlet channel is arranged at the bottom of the inner cavity of the separating cylinder, an oil outlet channel is arranged on the inner cavity of the deoiling shell, a propelling spiral shaft capable of pushing scrap iron in the separating cylinder to move towards an inner port of the scrap outlet channel is rotatably connected to the inner cavity of the separating cylinder, the separating cylinder and the propelling spiral shaft are driven to rotate in the same direction by a power device respectively, and the rotating speed of the separating cylinder is less than that of the propelling spiral shaft. Because the rotating speed difference exists between the separating cylinder and the propelling screw shaft, the iron chips can move towards the chip discharging channel at the bottom of the separating cylinder under the pushing of the propelling screw shaft while oil is separated by the centrifugal force of the separating cylinder, and finally the iron chips are discharged through the chip discharging channel, so that the purposes of deoiling and continuous discharging are realized, and the high working efficiency is realized.

Description

Differential type screw propulsion deoiling machine

The technical field is as follows:

the invention belongs to the technical field of machining equipment, and particularly relates to a differential type screw propulsion deoiling machine.

Background art:

in the machining process of mechanical workpieces, especially when some mechanical workpieces with high precision requirements are machined, certain requirements are imposed on the temperature in the machining process, so that oil is needed to cool the mechanical workpieces, and a large amount of cooling oil is adhered to scrap iron and aluminum chips generated in the machining process.

In order to be able to follow iron fillings with oil, the separation and retrieve on the aluminium bits, the iron fillings deoiling machine that the current chinese utility model patent (grant notice No. CN201150881Y) disclosed, it is including fixed bucket, the fuselage, the rotary barrel, inverter motor, the drive belt, the rotating main shaft, the bearing reaches connects the food tray to constitute, the rotating main shaft passes through the bearing to be fixed in the frame, the rotary barrel is equipped with on the upper portion of rotating main shaft, the system has the oil leak hole on the bucket wall of rotary barrel, fixed bucket is equipped with to the outside of rotary barrel, fixed bucket lower part is equipped with connects the food tray, the lower part of rotating main shaft is passed through the drive belt and is connected with inverter motor. Scrap iron is placed in the rotary barrel to rotate, so that waste oil adhered to the scrap iron is separated from the scrap iron and then recycled. However, the iron fillings of this structure need be from last down pour into rotatory bucket in, treat iron fillings and the completion of fluid separation after, iron fillings are only two kinds from the discharged mode in the rotatory bucket: one is to manually and gradually shovel the scrap iron in the rotary barrel; the other type is that the rotary barrel is directly disassembled from the variable frequency motor, and then the scrap iron is poured out from the rotary barrel. Therefore, the two modes are low in efficiency, high in labor intensity and incapable of being applied to factories which generate a large amount of scrap iron every day.

In addition, some iron fillings deoiling machines that can intermittent type formula ejection of compact also exist on the existing market, like the iron fillings deoiling machine that chinese utility model patent (grant publication No. CN202845174U) disclosed, it is including frame, centrifugal mechanism and oil receiving tank, centrifugal mechanism mainly comprises the centrifugal cylinder that is used for loading band oil iron fillings and is used for driving centrifugal cylinder pivoted motor, the centrifugal cylinder ring week is equipped with the centrifugal hole, the motor is fixed in one side of frame, centrifugal cylinder is located oil receiving tank inside, oil receiving tank fixes in the frame. Its centrifugal roller bottom adopts the activity mode that opens and shuts, and after getting rid of the oil on iron fillings into receiving the oil tank, the adjustable fender of cylinder drive centrifugation roll bottom moves down, and the opening of centrifugal roller bottom this moment is the open mode, and iron fillings in the centrifugal roller flow from the opening part to realize the discharge of iron fillings. However, the problem of low working efficiency still exists because of the intermittent discharging mode, and meanwhile, as the centrifugal roller is internally provided with scrap iron and has poor working conditions, the movable baffle plate is easy to be stuck by the scrap iron to cause a dead halt when the movable baffle plate is movably opened, closed and moved.

The invention content is as follows:

the invention aims to provide a differential screw propulsion deoiling machine which can separate oil from scrap iron under the centrifugal force of a separation cylinder and can move towards a scrap outlet channel at the bottom of the separation cylinder under the pushing of a propulsion screw shaft by means of the rotation speed difference between the separation cylinder and the propulsion screw shaft, thereby realizing continuous and uninterrupted scrap iron deoiling operation and having higher working efficiency.

The invention is realized by the following steps:

a differential screw propulsion deoiling machine comprises a deoiling shell, a separating cylinder is rotatably connected to an inner cavity of the deoiling shell, separating oil holes for preventing scrap iron from passing through are distributed in a cylinder wall of the separating cylinder, a feeding channel is arranged on the deoiling shell, the outer end of the feeding channel is communicated with the outside, the inner end of the feeding channel is communicated with the top of the inner cavity of the separating cylinder, a scrap outlet channel is arranged at the bottom of the inner cavity of the separating cylinder, an outer port of the scrap outlet channel extends out of the deoiling shell and is communicated with a recovered scrap iron container or the outside, an oil outlet channel is arranged on the inner cavity of the deoiling shell positioned at the periphery of the separating cylinder, an outer port of the oil outlet channel extends out of the deoiling shell and is communicated with a recovered oil container or the outside, a propulsion screw shaft capable of propelling the scrap iron in the separating cylinder to move towards the inner port of the scrap outlet channel is rotatably connected to the inner cavity of the separating cylinder, and the propulsion screw shaft are driven by a power device to rotate in the same direction respectively, And the rotating speed of the separating drum is less than that of the propelling screw shaft.

In the differential type screw propulsion deoiling machine, the power device comprises a power input shaft which rotates on the deoiling shell and a driven hollow shaft which is sleeved on the power input shaft and can rotate relatively, the propulsion screw shaft is fixedly sleeved on the power input shaft, the separation cylinder is fixedly sleeved on the driven hollow shaft, the power input shaft is in transmission connection with the driving source through the first transmission assembly, and the driven hollow shaft is in transmission connection with the first power source or the second power source through the second transmission assembly.

In the above-mentioned differential screw propulsion deoiling machine, the power supply I is a driving motor, the transmission assembly I comprises a driving belt wheel sleeved on an output shaft of the driving motor and a driven belt wheel sleeved on a power input shaft, and the driving belt wheel is in transmission connection with the driven belt wheel through a transmission belt.

In the differential screw propulsion deoiling machine, the transmission assembly II comprises an intermediate shaft rotating on the deoiling shell, a driven gear I and a driving gear II are sleeved on the intermediate shaft, a driving gear I engaged with the driven gear I is sleeved on the power input shaft, and a driven gear II engaged with the driving gear II is sleeved on the driven hollow shaft.

In foretell differential formula screw propulsion deoiling machine, the storage tank has been seted up along its axial on the bottom face of propulsion screw axis, the upper end of power input shaft and driven hollow shaft is all from supreme stretching into the storage tank down, and the upper end of power input shaft upwards extends and is fixed with propulsion screw axis suit, and the separator bowl passes through the connecting plate muscle from supreme stretching into the storage tank down to the suit is fixed on driven hollow shaft.

In a foretell differential formula screw propulsion deoiling machine, the upper end of power input shaft runs through outside the propulsion screw axis and the cover is equipped with and is kept off the material flange, feed channel is the feeder hopper that sets up on the deoiling casing, and the discharge end of feeder hopper is located and keeps off the material flange directly over.

In a foretell differential formula screw propulsion deoiling machine, retrieve the iron fillings container and receive the cage shell for the lid establishes the ejection of compact on the deoiling casing bottom surface, form iron fillings between cage shell and the deoiling casing and retrieve the chamber in the ejection of compact, the outer port of chip channel is seted up on iron fillings are retrieved the chamber.

In the above differential type screw propulsion deoiling machine, the chip outlet channel comprises a chip outlet inner opening arranged at the bottom of the separating cylinder, an annular chip blocking wall is arranged on the deoiling shell positioned at the periphery of the chip outlet inner opening, the separating cylinder is in running fit with the annular chip blocking wall, and a chip outlet outer opening is arranged on the deoiling shell positioned between the chip outlet inner opening and the annular chip blocking wall.

In the differential screw propulsion deoiling machine, the oil outlet channel comprises an oil passing port formed in the deoiling shell, an oil outlet box communicated with the oil passing port is arranged on the outer wall surface of the deoiling shell, and an oil outlet pipe communicated with the inner end of the oil outlet box is arranged on the outer wall surface of the oil outlet box.

In a foretell differential formula screw propulsion deoiling machine, still including the frame, deoiling casing all sets up in the frame with power device, and the deoiling casing is including fixing the support base in the frame and setting up the oil baffle shell on supporting the base.

Compared with the prior art, the invention has the outstanding advantages that:

1. because the rotating speed difference exists between the separating cylinder and the propelling screw shaft, the scrap iron can move towards the scrap discharging channel at the bottom of the separating cylinder under the pushing action of the propelling screw shaft while oil and liquid are separated by the centrifugal force of the separating cylinder, and finally the scrap iron is discharged through the scrap discharging channel, so that the purposes of deoiling and continuous discharging are realized, and the working efficiency is higher;

2. the invention can adjust the rotating speed of the separating cylinder and the screw propelling shaft, and the larger the rotating speed difference between the separating cylinder and the screw propelling shaft is, the faster the discharging speed of scrap iron is and the lower the oil liquid drying rate is; correspondingly, the smaller the difference between the rotating speeds of the separating cylinder and the screw propelling shaft is, the slower the discharging speed of the scrap iron is and the higher the oil liquid drying rate is.

Description of the drawings:

FIG. 1 is a perspective view of the complete machine of the present invention;

FIG. 2 is a cross-sectional view of the complete machine of the present invention;

FIG. 3 is a front view of the auger shaft of the present invention;

FIG. 4 is a perspective view of the separation cartridge of the present invention;

fig. 5 is a perspective view of the support base of the present invention.

In the figure: 1. a deoiling shell; 2. a separation cylinder; 3. propelling the screw shaft; 4. a power input shaft; 5. a driven hollow shaft; 6. a drive motor; 7. a driving pulley; 8. a driven pulley; 9. a transmission belt; 10. an intermediate shaft; 11. a first driving gear; 12. a first driven gear; 13. a second driving gear; 14. a driven gear II; 15. a containing groove; 16. connecting plate ribs; 17. a material blocking flange; 18. a feed hopper; 19. discharging and collecting a cage shell; 20. a scrap iron recycling cavity; 21. an inner scrap outlet; 22. an annular chip blocking wall; 23. a chip outlet; 24. an oil passing port; 25. an oil outlet box; 26. an oil outlet pipe; 27. a frame; 28. a support base; 29. an oil retaining shell.

The specific implementation mode is as follows:

the invention will now be further described by way of specific examples, with reference to figures 1 to 5:

a differential screw propulsion deoiling machine comprises a deoiling shell 1, a separating cylinder 2 is rotatably connected to an inner cavity of the deoiling shell 1, separating oil holes for preventing scrap iron from passing through are distributed in a cylinder wall of the separating cylinder 2, a feeding channel is arranged on the deoiling shell 1, the outer end of the feeding channel is communicated with the outside, the inner end of the feeding channel is communicated with the top of the inner cavity of the separating cylinder 2, a scrap outlet channel is arranged at the bottom of the inner cavity of the separating cylinder 2, the outer end of the scrap outlet channel extends out of the deoiling shell 1 and is communicated with a scrap recovery container or the outside, an oil outlet channel is arranged on the inner cavity of the deoiling shell 1 at the periphery of the separating cylinder 2, the outer end of the oil outlet channel extends out of the deoiling shell 1 and is communicated with the scrap recovery container or the outside, a propulsion screw shaft 3 capable of pushing the scrap iron in the separating cylinder 2 to move towards the inner end of the scrap outlet channel is rotatably connected to the inner cavity of the separating cylinder 2, and the separating cylinder 2 and the propulsion screw shaft 3 are driven by a power device to rotate in the same direction respectively, And the rotational speed of the separation drum 2 is less than the rotational speed of the auger shaft 3.

Namely, the working principle of the invention is as follows: continuously feeding iron filings into the separating cylinder 2 through a feeding channel, attaching the iron filings to the cylinder wall of the separating cylinder 2 under the action of centrifugal force of the separating cylinder 2, throwing oil liquid on the iron filings out of an inner cavity of the deoiling shell 1 outside the separating cylinder 2 through a separating oil hole, converging at the bottom of the inner cavity of the deoiling shell 1 and flowing out through an oil outlet channel; and because there is the difference of rotational speed between screw shaft 3 and the separating cylinder 2, the iron fillings can also move towards the chip channel of the separating cylinder 2 bottom under the promotion of propelling screw shaft 3 while carrying on the oil separation at the centrifugal force of the separating cylinder 2, the final iron fillings are discharged through the chip channel, have realized the deoiling and goal of continuous discharging, possess higher work efficiency.

Meanwhile, the invention can adjust the rotating speed of the separating cylinder 2 and the propelling screw shaft 3, the larger the rotating speed difference between the separating cylinder 2 and the propelling screw shaft 3 is, the faster the discharging speed of the scrap iron is, and the lower the oil liquid drying rate is; correspondingly, the smaller the difference between the rotating speeds of the separating cylinder 2 and the screw propelling shaft 3 is, the slower the discharging speed of the scrap iron is and the higher the oil liquid drying rate is.

Furthermore, in order to enable the separation barrel 2 and the propelling screw shaft 3 to coaxially rotate, the power device comprises a power input shaft 4 which rotates on the deoiling shell 1 and a driven hollow shaft 5 which is sleeved on the power input shaft 4 and can relatively rotate, the propelling screw shaft 3 is fixedly sleeved on the power input shaft 4, the separation barrel 2 is fixedly sleeved on the driven hollow shaft 5, the power input shaft 4 is in transmission connection with a driving source through a first transmission assembly, and the driven hollow shaft 5 is in transmission connection with a first power source or a second power source through a second transmission assembly. Namely, the power input shaft 4 and the driven hollow shaft 5 can be driven by the same power source or can be driven by two power sources respectively,

meanwhile, the first power source drives the power input shaft 4 to rotate through the first transmission assembly, and the conventional common assemblies can be adopted for matching, for example, the first transmission assembly is a coupler, and a rotating shaft of the power source is directly linked with the bottom end of the power input shaft 4 through the coupler; in the embodiment, the design structure of the whole equipment is considered, and meanwhile, the hydraulic power system is easy to break down under the poor working condition, so that the specific structures adopted by the first power source and the first transmission assembly are as follows: the first power source is a driving motor 6, the first transmission assembly comprises a driving belt wheel 7 and a driven belt wheel 8, the driving belt wheel 7 is sleeved on an output shaft of the driving motor 6, the driven belt wheel 8 is sleeved on the power input shaft 4, and the driving belt wheel 7 and the driven belt wheel 8 are in transmission connection through a transmission belt 9.

Furthermore, in order to realize the rotation of the separation cylinder 2 and the screw propelling shaft 3 in the same direction and at different speeds, and in the present embodiment, in order to save the equipment cost, the power input shaft 4 and the driven hollow shaft 5 are both driven by the same power source, and the specific structure adopted by the transmission assembly two is as follows: the second transmission assembly comprises an intermediate shaft 10 which rotates on the deoiling shell 1, a first driven gear 12 and a second driving gear 13 are sleeved on the intermediate shaft 10, a first driving gear 11 meshed with the first driven gear 12 is sleeved on the power input shaft 4, and a second driven gear 14 meshed with the second driving gear 13 is sleeved on the driven hollow shaft 5. Namely, the transmission ratio among the first driving gear 11, the first driven gear 12, the second driving gear 13 and the second driven gear 14 is reasonably designed, so that the rotating speed of the driven hollow shaft 5 is smaller than that of the power input shaft 4.

Further, in order to prevent the connection structure between the screw propelling shaft 3 and the power input shaft 4 and the connection structure between the separating cylinder 2 and the driven hollow shaft 5 from interfering, in the present embodiment, the specific connection matching structures between the screw propelling shaft 3 and the power input shaft 4 and between the separating cylinder 2 and the driven hollow shaft 5 are: the bottom end face of the propelling screw shaft 3 is provided with a containing groove 15 along the axial direction, the upper ends of the power input shaft 4 and the driven hollow shaft 5 extend into the containing groove 15 from bottom to top, the upper end of the power input shaft 4 extends upwards and is fixed to the propelling screw shaft 3 in a sleeved mode, and the separating cylinder 2 extends into the containing groove 15 from bottom to top through a connecting plate rib 16 and is fixed to the driven hollow shaft 5 in a sleeved mode.

In addition, in order to enable iron chips to be quickly attached to the wall of the separation barrel 2 when the iron chips enter the separation barrel 2 through the feeding channel, the upper end of the power input shaft 4 penetrates through the outside of the screw propelling shaft 3 and is sleeved with a material blocking flange 17, the feeding channel is a feeding hopper 18 arranged on the deoiling shell 1, and the discharging end of the feeding hopper 18 is positioned right above the material blocking flange 17. Namely, the iron chips fall onto the material blocking flange 17 in a concentrated manner through the feed hopper 18, and the material blocking flange 17 rotates at a high speed along with the power input shaft 4, so that the iron chips can be thrown onto the cylinder wall of the separating cylinder 2 immediately under the action of the material blocking flange 17.

Furthermore, in order to effectively retrieve iron fillings, reduce iron fillings and scatter at the equipment periphery and reduce operational environment, retrieve the iron fillings container and receive cage shell 19 for the ejection of compact of lid on deoiling casing 1 bottom surface, the ejection of compact is received and is formed iron fillings between cage shell 19 and the deoiling casing 1 and retrieve chamber 20, the outer port of chip channel is seted up on iron fillings retrieve chamber 20. The discharging cage-collecting shell 19 and the deoiling shell 1 can be connected by a structure convenient to detach, and a discharging window can be formed in the discharging cage-collecting shell 19.

And consider that iron fillings move to the play bits passageway under the centrifugal force effect of cylinder 2, can be got rid of the business turn over bits passageway fast, so the concrete constitutional structure of play bits passageway is: the chip outlet channel comprises a chip outlet inner opening 21 formed in the bottom of the separating cylinder 2, an annular chip blocking wall 22 is arranged on the deoiling shell 1 located on the periphery of the chip outlet inner opening 21, the separating cylinder 2 is in running fit with the annular chip blocking wall 22, and a chip outlet outer opening 23 is formed in the deoiling shell 1 located between the chip outlet inner opening 21 and the annular chip blocking wall 22. Namely, the iron filings will be thrown out from the inner scrap outlet 21 and blocked by the annular scrap blocking wall 22 to fall into the outer scrap outlet 23, i.e. in this embodiment, the iron filings will fall into the iron filings recycling cavity 20.

Furthermore, in order to facilitate the recovery operation of the oil, the oil outlet channel comprises an oil outlet 24 formed on the deoiling shell 1, an oil outlet box 25 communicated with the oil outlet 24 is arranged on the outer wall surface of the deoiling shell 1, and an oil outlet pipe 26 communicated with the inner end of the oil outlet box 25 is arranged on the outer wall surface of the oil outlet box 25.

In addition, in order to effectively fix the position of the deoiling shell 1 and the power device, the deoiling shell 1 and the power device are both arranged on the frame 27, and the deoiling shell 1 comprises a supporting base 28 fixed on the frame 27 and an oil blocking shell 29 arranged on the supporting base 28. The annular chip blocking wall 22 and the chip outlet 23 are both arranged on the supporting base 28.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the invention are covered by the protection scope of the invention.

Claims (10)

1. The utility model provides a differential formula screw propulsion deoiling machine which characterized in that: comprises a deoiling shell (1), a separating cylinder (2) is rotatably connected on the inner cavity of the deoiling shell (1), separating oil holes for preventing scrap iron from passing through are distributed on the cylinder wall of the separating cylinder (2), a feeding channel is arranged on the deoiling shell (1), the outer end of the feeding channel is communicated with the outside, the inner end of the feeding channel is communicated with the top of the inner cavity of the separating cylinder (2), a scrap outlet channel is arranged at the bottom of the inner cavity of the separating cylinder (2), the outer port of the scrap outlet channel extends out of the deoiling shell (1) and is communicated with a scrap iron recovery container or the outside, an oil outlet channel is arranged on the inner cavity of the deoiling shell (1) at the periphery of the separating cylinder (2), the outer port of the oil outlet channel extends out of the deoiling shell (1) and is communicated with a scrap oil recovery container or the outside, a propelling spiral shaft (3) capable of pushing the scrap iron in the separating cylinder (2) to move towards the inner port of the scrap outlet channel is rotatably connected in the inner cavity of the separating cylinder (2), the separating cylinder (2) and the propelling screw shaft (3) are driven by a power device to rotate in the same direction, and the rotating speed of the separating cylinder (2) is less than that of the propelling screw shaft (3).

2. The differential screw propulsion deoiler of claim 1, characterized in that: the power device comprises a power input shaft (4) which rotates on the deoiling shell (1) and a driven hollow shaft (5) which is sleeved on the power input shaft (4) and can rotate relatively, a propelling screw shaft (3) is fixedly sleeved on the power input shaft (4), a separating cylinder (2) is fixedly sleeved on the driven hollow shaft (5), the power input shaft (4) is in transmission connection with a driving source through a transmission assembly I, and the driven hollow shaft (5) is in transmission connection with a power source I or a power source II through a transmission assembly II.

3. The differential screw propulsion deoiler of claim 2, characterized in that: the first power source is a driving motor (6), the first transmission assembly comprises a driving belt wheel (7) and a driven belt wheel (8), the driving belt wheel (7) is sleeved on an output shaft of the driving motor (6), the driven belt wheel (8) is sleeved on a power input shaft (4), and the driving belt wheel (7) and the driven belt wheel (8) are in transmission connection through a transmission belt (9).

4. A differential screw propeller deoiling machine according to claim 2 or 3, characterized in that: the second transmission assembly comprises an intermediate shaft (10) which rotates on the deoiling shell (1), a first driven gear (12) and a second driving gear (13) are sleeved on the intermediate shaft (10), a first driving gear (11) which is meshed with the first driven gear (12) is sleeved on the power input shaft (4), and a second driven gear (14) which is meshed with the second driving gear (13) is sleeved on the driven hollow shaft (5).

5. The differential screw propulsion deoiler of claim 2, characterized in that: the spiral shaft type spiral power generation device is characterized in that a containing groove (15) is formed in the bottom end face of the propelling spiral shaft (3) along the axial direction of the spiral shaft type spiral power generation device, the upper ends of the power input shaft (4) and the driven hollow shaft (5) stretch into the containing groove (15) from bottom to top, the upper end of the power input shaft (4) extends upwards and is fixed to the propelling spiral shaft (3) in a sleeved mode, and the separating cylinder (2) stretches into the containing groove (15) from bottom to top through a connecting plate rib (16) and is fixed to the driven hollow shaft (5) in a sleeved mode.

6. The differential screw propulsion deoiler of claim 5, characterized in that: the upper end of the power input shaft (4) penetrates through the outside of the propelling screw shaft (3) and is sleeved with a material blocking flange (17), the feeding channel is a feeding hopper (18) arranged on the deoiling shell (1), and the discharging end of the feeding hopper (18) is positioned right above the material blocking flange (17).

7. The differential screw propulsion deoiler of claim 1, characterized in that: retrieve iron fillings container and receive cage shell (19) for the ejection of compact of lid establishing on deoiling casing (1) bottom surface, the ejection of compact is received and is formed iron fillings between cage shell (19) and deoiling casing (1) and retrieve chamber (20), the outer port of chip channel is seted up on iron fillings retrieve chamber (20).

8. The differential screw propeller deoiler of claim 1 or 7, characterized in that: the chip outlet channel comprises a chip outlet inner opening (21) formed in the bottom of the separating cylinder (2), an annular chip blocking wall (22) is arranged on the deoiling shell (1) located on the periphery of the chip outlet inner opening (21), the separating cylinder (2) is in running fit with the annular chip blocking wall (22), and a chip outlet outer opening (23) is formed in the deoiling shell (1) located between the chip outlet inner opening (21) and the annular chip blocking wall (22).

9. The differential screw propulsion deoiler of claim 1, wherein: the oil outlet channel comprises an oil passing port (24) formed in the deoiling shell (1), an oil outlet box (25) communicated with the oil passing port (24) is arranged on the outer wall surface of the deoiling shell (1), and an oil outlet pipe (26) communicated with the inner end of the oil outlet box (25) is arranged on the outer wall surface of the oil outlet box (25).

10. The differential screw propulsion deoiler of claim 1, characterized in that: still including frame (27), deoiling casing (1) and power device all set up in frame (27), and deoiling casing (1) including fix support base (28) on frame (27) and set up fender oil shell (29) on support base (28).

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