CN217575613U

CN217575613U - Rotary oil suction device

Info

Publication number: CN217575613U
Application number: CN202220733638.6U
Authority: CN
Inventors: 刘旭; 陈强; 李启雄; 何体财
Original assignee: Sichuan Aviation Industry Chuanxi Machine Co ltd
Current assignee: Sichuan Aviation Industry Chuanxi Machine Co ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-10-14
Anticipated expiration: 2032-03-31

Abstract

The utility model relates to an aeroengine lubricating oil case technical field specifically indicates a rotation type oil suction device. The rotary oil suction device comprises a rotating shaft, a guide ring and an oil suction pipe; the oil suction pipe is arranged on the rotating shaft through the guide ring, and oil circulates from a runner opening between the rotating shaft and the oil suction pipe; the oil suction pipe is provided with two guide ring grooves which are respectively positioned at two sides of the upstream opening of the rotating shaft; the two guide rings are in a group and are respectively arranged in the guide ring grooves on the inner wall of the oil suction pipe, and the guide rings are in clearance fit with the oil suction pipe and the rotating shaft, namely the guide rings are used as rotating friction media between the oil suction pipe and the rotating shaft; the guide ring is made of non-metal materials, and the rotating shaft and the oil suction pipe are made of metal materials. Through the arrangement of the rotary friction medium made of the non-metal material and the arrangement of the metal-non-metal matched revolute pair, the friction coefficient is reduced, and the risk that the same metal is easily welded is avoided.

Description

Rotary oil suction device

Technical Field

The utility model relates to an aeroengine lubricating oil case technical field, specific rotation type oil suction device that says so.

Background

During the process of special effect flight, the airplane can fly in a negative overload or reverse flight state lasting for a certain time, and the state is common on a coach plane, a performance plane and a military airplane.

Because the flying attitude of the airplane is changed, the oil in the oil tank can be separated from the bottom of the oil tank, and because the oil outlet is arranged at the bottom of the oil tank, if certain measures are not taken, the continuous and stable fuel supply to the engine can not be ensured.

At present, a rotary oil suction device is developed in China, but the friction coefficient of the rotary oil suction device is high in the operation process due to the fact that the rotating pair is made of the same metal, and the metal matrix is the same, welding can be generated under the action of external force for a long time, the clamping risk exists, continuous and stable fuel oil supply is influenced, and further flight safety is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to exist the not enough of coefficient of friction height, the jamming condition appears easily because of the revolute pair is the same kind of metal among the prior art, provide a rotation type oil suction device different with prior art structure. The rotary oil suction device reduces the friction coefficient and avoids the risk that the same metal is easy to weld together by arranging the rotary friction medium made of the non-metal material and the metal-non-metal matched rotating pair.

The specific technical scheme is as follows:

a rotary oil suction device comprises a rotating shaft, a guide ring and an oil suction pipe; the oil suction pipe is arranged on the rotating shaft through the guide ring, and oil circulates from a runner opening between the rotating shaft and the oil suction pipe; the oil suction pipe is provided with two guide ring grooves which are respectively positioned at two sides of the runner port on the rotating shaft; the two guide rings are in a group and are respectively installed in the guide ring grooves on the inner wall of the oil suction pipe, and the guide rings are in clearance fit with the oil suction pipe and the rotating shaft, namely the guide rings are used as rotating friction media between the oil suction pipe and the rotating shaft; the guide ring is made of a non-metal material, and the rotating shaft and the oil suction pipe are made of a metal material.

In order to better realize the utility model discloses, further, the guide ring adopts non-metallic material with self-lubricating property to make.

In order to better realize the utility model, furthermore, the guide ring is made of polytetrafluoroethylene materials.

In order to better realize the utility model, further, the outer diameter of the retainer ring is in clearance fit with the guide ring groove of the oil suction pipe; the inner diameter of the retainer ring is in clearance fit with the rotating shaft; the side face, close to the guide ring, of the retainer ring is in contact with the guide ring to limit the guide ring.

In order to better realize the utility model, the utility model further comprises a retainer ring and a self-locking nut; the outer wall surface of the rotating shaft is provided with a limiting flange, the guide rings positioned at the front ends of the two guide rings are subjected to limiting installation through the limiting flange, and the guide rings positioned at the rear ends of the two guide rings are subjected to limiting installation through a retaining ring and a self-locking nut which are sequentially installed on the rotating shaft.

And the rotating shaft is provided with a retainer ring and a self-locking nut to limit the guide ring at the rear end and prevent the guide ring at the rear end and the oil suction pipe from being separated.

In order to better realize the utility model, furthermore, the oil suction pipe is a hollow T-shaped structure, and a flow channel ring groove is arranged between the two guide ring grooves; the middle part of the rotating shaft is of a cylindrical structure, a flow passage is arranged in the cylinder, and a waist-shaped hole flow passage corresponding to the annular groove position of the oil suction pipe flow passage is arranged on the side wall of the cylinder.

In order to better realize the utility model discloses, furtherly, the lower extreme of inhaling oil pipe is provided with the balancing weight.

Compared with the prior art, the utility model, have following advantage and beneficial effect.

(1) The utility model discloses a rotation type oil suction device adopts the non-metallic material who has self-lubricating property to make as the guide ring of rotational friction medium, and coefficient of friction is low, moves smoothly.

(2) The utility model discloses a rotation type oil suction device, the revolute pair that pivot, guide ring, oil absorption pipe constitute is the revolute pair of metal-nonmetal cooperation formula, avoids the risk of easy seam of the same kind of metal.

(3) The utility model discloses a rotation type oil suction device, stability is high.

Drawings

Fig. 1 is a schematic structural diagram of a rotary oil suction device of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic view of a rotating shaft structure of the rotary oil suction device of the present invention.

Fig. 4 is a schematic view of an oil suction pipe structure of the rotary oil suction device of the present invention.

Wherein:

1. a rotating shaft; 2. a guide ring; 3. an oil suction pipe; 4. a retainer ring; 5. a self-locking nut; 6. a flared tube fitting; 7. a limiting flange; 8. a slotted hole flow passage; 9. a guide ring groove; 10. a flow channel ring groove; 11. and a balancing weight.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.

Example 1:

the embodiment discloses a rotary oil suction device, which comprises a rotating shaft 1, a guide ring 2 and an oil suction pipe 3; the oil suction pipe 3 is arranged on the rotating shaft 1 through the guide ring 2, and oil flows through a runner opening between the rotating shaft 1 and the oil suction pipe 3; the oil suction pipe 3 is provided with two guide ring grooves 9, and the two guide ring grooves 9 are respectively positioned at two sides of the runner port; the two guide rings 2 are in a group and are respectively installed in the guide ring grooves 9 on the inner wall of the oil suction pipe 3, and the guide rings 2 are in clearance fit with the oil suction pipe 3 and the rotating shaft 1, namely the guide rings 2 are used as rotating friction media between the oil suction pipe 3 and the rotating shaft 1; the guide ring 2 is made of a non-metal material, and the rotating shaft 1 and the oil suction pipe 3 are made of a metal material.

Further, the guide ring 2 is made of a non-metallic material with self-lubricating property.

Further, the guide ring 2 is made of polytetrafluoroethylene material.

Example 2:

the present example was optimized based on example 1.

The embodiment discloses a rotary oil suction device, as shown in fig. 1 and fig. 2, which includes a rotating shaft 1, a guide ring 2, an oil suction pipe 3, a retainer ring 4 and a self-locking nut 5. As shown in fig. 3, a limiting flange 7 is arranged on the outer wall surface of the rotating shaft 1, the guide ring 2 located at the front end of the two guide rings 2 is limited and mounted by the limiting flange 7, and the guide ring 2 located at the rear end of the two guide rings 2 is limited and mounted by a retaining ring 4 and a self-locking nut 5 which are sequentially mounted on the rotating shaft 1.

Further, as shown in fig. 1 and 2, the outer diameter of the retainer ring 4 is in clearance fit with the guide ring groove 9 of the oil suction pipe 3; the inner diameter of the retainer ring 4 is in clearance fit with the rotating shaft 1; the side face of the retainer ring 4 close to the guide ring 2 is contacted with the guide ring 2 to limit the guide ring 2.

As shown in fig. 3, the rotating shaft 1 includes main functional parts such as a flared pipe joint 6, a limiting flange 7, a kidney-shaped hole flow passage 8, and the like. Specifically, the middle part of the rotating shaft 1 is of a cylindrical structure, a flow channel is arranged inside the cylinder, a waist-shaped hole flow channel 8 corresponding to the position of a flow channel ring groove 10 of the oil suction pipe 3 is arranged on the side wall of the cylinder, and a limiting flange 7 of the guide ring 2 is arranged outside the cylinder. One end of the rotating shaft 1 is provided with a flared pipe joint 6 and a hexagonal mounting surface, and the other end of the rotating shaft is provided with an external thread joint.

As shown in fig. 4, the oil suction pipe 3 includes a guide ring groove 9, a flow channel ring groove 10, a weight block 11, and other main functional parts. The oil suction pipe 3 is of a hollow T-shaped structure, and a flow channel annular groove 10 is formed between the two guide annular grooves 9. The guide ring groove 9 is used for installing the guide ring 2, and the installation position of the runner ring groove 10 is aligned with the kidney-shaped hole runner 8.

Further, the weight block 11 is located at the lower end of the oil suction pipe 3.

In the embodiment, the rotary oil absorption device has the advantages that the rotary friction medium of the rotating pair is selected to be the guide ring 2 with low friction coefficient and self-lubricating function, after the airplane rotates to a certain angle, the moment generated by the gravity of the counterweight block 11 is larger than the moment generated by friction force, the oil absorption pipe 3 rotates around the rotating shaft 1 to move in a rotating mode and is always immersed in oil, and the continuous and stable fuel supply of the system is guaranteed.

The flared pipe joint 6 is fixedly connected with an aircraft oil delivery pipe to form a complete fuel supply system with the aircraft. Oil enters through the lower end of the oil suction pipe 3, enters the rotating shaft 1 through the runner kidney-shaped hole, and enters the aircraft fuel supply system through the flared pipe joint 6.

Other parts of this embodiment are the same as embodiment 1, and thus are not described again.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention in any form, and all the technical matters of the present invention are all within the protection scope of the present invention for any simple modification and equivalent change of the above embodiments.

Claims

1. A rotary oil suction device comprises a rotating shaft (1), a guide ring (2) and an oil suction pipe (3); the oil suction pipe (3) is arranged on the rotating shaft (1) through the guide ring (2), and oil flows through a runner opening between the rotating shaft (1) and the oil suction pipe (3); the method is characterized in that: the oil suction pipe (3) is provided with two guide ring grooves (9), and the two guide ring grooves (9) are respectively positioned at two sides of the runner port; the two guide rings (2) are in a group and are respectively arranged in a guide ring groove (9) on the inner wall of the oil suction pipe (3), and the guide rings (2) are in clearance fit with the oil suction pipe (3) and the rotating shaft (1), namely the guide rings (2) are used as rotating friction media between the oil suction pipe (3) and the rotating shaft (1); the guide ring (2) is made of a non-metal material, and the rotating shaft (1) and the oil suction pipe (3) are made of a metal material.

2. The rotary oil absorption device as claimed in claim 1, wherein: the guide ring (2) is made of non-metallic materials with self-lubricating performance.

3. The rotary oil absorption device as claimed in claim 2, wherein: the guide ring (2) is made of polytetrafluoroethylene materials.

4. A rotary oil absorption device as claimed in any one of claims 1 to 3, wherein: the device also comprises a check ring (4) and a self-locking nut (5); be provided with spacing flange (7) on the outer wall of pivot (1), leading ring (2) that lie in the front end in two leading rings (2) pass through spacing flange (7) carry out spacing installation, and leading ring (2) that lie in the rear end in two leading rings (2) carry out spacing installation through retaining ring (4) and self-locking nut (5) of installing in proper order on pivot (1).

5. The rotary oil absorption device as claimed in claim 4, wherein: the outer diameter of the retainer ring (4) is in clearance fit with a guide ring groove (9) of the oil suction pipe (3); the inner diameter of the retainer ring (4) is in clearance fit with the rotating shaft (1); the side face, close to the guide ring (2), of the retainer ring (4) is in contact with the guide ring (2) to limit the guide ring (2).

6. A rotary oil absorption device as claimed in any one of claims 1 to 3, wherein: the oil suction pipe (3) is of a hollow T-shaped structure, and a flow channel annular groove (10) is formed between the two guide annular grooves (9); the middle part of the rotating shaft (1) is of a cylindrical structure, a flow channel is arranged inside the cylinder, and a waist-shaped hole flow channel (8) corresponding to the position of the flow channel ring groove (10) of the oil suction pipe (3) is arranged on the side wall of the cylinder.

7. A rotary oil suction device according to any one of claims 1 to 3, wherein: the lower end of the oil suction pipe (3) is provided with a balancing weight (11).