Search

CN-121990173-A - Anti-overload oil filter assembly

CN121990173ACN 121990173 ACN121990173 ACN 121990173ACN-121990173-A

Abstract

The invention discloses an anti-overload oil filter assembly which comprises an oil cup and an oil supply port, wherein the oil cup is of a structure with a top part and a circumferentially closed bottom part and is fixed on the inner side of an installation port at the bottom part of an oil tank body, a gap for fuel to pass through is formed between the bottom part of the oil cup and the bottom part of the oil tank body, the oil supply port extends into the oil cup in a sealing manner from the installation port, and an oil inlet end is positioned at the middle height of the oil cup. The invention further comprises an oil collecting seat, a filter element, an exhaust valve, an exhaust pipe, a drain plug and other parts, wherein the oil collecting seat is arranged on the outer side of the oil tank body, an oil collecting cavity is arranged in the oil collecting seat, the filter element extends into the oil cup, the oil supply port penetrates through the filter element, the exhaust valve is matched with the exhaust pipe to exhaust gas, the drain plug is used for exhausting free water and impurities at the bottom of the oil collecting cavity, and a multiple sealing structure is arranged to ensure tightness. The invention integrates the functions of oil stabilization, filtration, exhaust and pollution discharge, can avoid oil supply interruption under the working conditions of negative overload, inclination and the like, has compact structure, reliable sealing and convenient maintenance, is suitable for various oil tank systems, and improves the stability and safety of oil supply.

Inventors

  • YIN YANBIN
  • ZHANG CHAO
  • ZHANG LIN
  • GAN FAJIN
  • WEN KANG

Assignees

  • 彩虹无人机科技有限公司

Dates

Publication Date
20260508
Application Date
20260318

Claims (10)

  1. 1. An anti-load oil filter assembly, comprising: the oil cup (1) is of a structure with a closed top and a circumferential direction and an open bottom, is fixedly arranged on the inner side of a mounting opening at the bottom of the oil tank body (2), and a gap for fuel to pass through is formed between the bottom of the oil cup (1) and the bottom of the oil tank body (2); The oil supply port (3) is sealed to extend into the oil cup (1) from the mounting port at the bottom of the oil tank body (2), and the oil inlet end of the oil supply port (3) is positioned at the middle height position of the oil cup (1).
  2. 2. The anti-load oil filter assembly of claim 1, wherein: The oil inlet end of the oil supply port (3) is positioned at the position of 1/3 to 2/3 of the height of the oil cup (1).
  3. 3. The anti-load oil filter assembly of claim 1, wherein: The lower part of the oil cup (1) is provided with a plurality of mounting claws (11), and the oil cup (1) is fixedly arranged at the inner side of a mounting opening at the bottom of the oil tank body (2) through the mounting claws (11); The mounting surface of the mounting claw (11) is lower than the lower edge of the oil cup (1), so that a gap for the fuel to pass through is formed.
  4. 4. The anti-load oil filter assembly of claim 1 or 2, wherein: The oil collecting seat (4) is arranged at the outer side of the mounting opening at the bottom of the oil tank body (2) and is in sealing connection with the oil tank body (2), and an oil collecting cavity (41) which is recessed downwards is formed in the oil collecting seat (4); The oil supply port (3) is arranged on the oil collecting seat (4) and penetrates through the oil collecting cavity (41) to extend into the oil cup (1).
  5. 5. The anti-load oil filter assembly of claim 4, wherein: a first sealing gasket (5) is arranged between the oil collecting seat (4) and the oil tank body (2).
  6. 6. The anti-load oil filter assembly of claim 4, wherein: a filter element mounting hole (44) is formed in the oil collecting seat (4); A filter element base (6) is arranged in the filter element mounting hole (44), and the filter element base (6) is in sealing connection with the oil collecting seat (4); install filter core (7) on filter core base (6), filter core (7) upwards extend to inside oil cup (1), fuel feeding mouth (3) pass filter core base (6) and filter core (7) inside.
  7. 7. The anti-load oil filter assembly of claim 6, wherein: a second sealing gasket (8) is arranged between the filter element base (6) and the oil collecting base (4).
  8. 8. The anti-load oil filter assembly of claim 4, wherein: An exhaust valve mounting hole (42) is formed in the oil collecting seat (4), and the exhaust valve mounting hole (42) is communicated with the oil collecting cavity (41); An exhaust valve (9) is arranged in the exhaust valve mounting hole (42), the exhaust valve (9) comprises a valve body (91), a reset spring (92) and a second O-shaped ring (93), the second O-shaped ring (93) is used for sealing between the exhaust valve (9) and the exhaust valve mounting hole (42), and the reset spring (92) is used for pressing the exhaust valve (9) at a sealing position; The lower end of the exhaust pipe (10) is communicated with the exhaust valve (9), the upper end of the exhaust pipe (10) extends upwards into the oil cup (1), the upper end of the exhaust pipe is positioned at the upper part of the oil cup (1) and is higher than the oil inlet end of the oil supply port (3), and an exhaust gap is reserved between the upper end of the exhaust pipe (10) and the top of the oil cup (1).
  9. 9. The anti-load oil filter assembly of claim 4, wherein: A pollution discharge plug mounting hole (43) is formed in the oil collecting seat (4), and the pollution discharge plug mounting hole (43) is communicated with the oil collecting cavity (41); A drain plug (11) is arranged in the drain plug mounting hole (43), and the drain plug (11) is in sealing and detachable connection with the oil collecting seat (4); The head of the pollution discharge plug (11) is positioned at the lowest point of the oil collecting cavity (41) and is used for discharging free water accumulated at the bottom of the oil collecting cavity (41).
  10. 10. The anti-load oil filter assembly of claim 9, wherein: an O-shaped ring I (12) is arranged between the pollution discharge plug (11) and the oil collecting seat (4).

Description

Anti-overload oil filter assembly Technical Field The invention belongs to the technical field of aviation fuel systems, and particularly relates to an anti-overload oil filter assembly. Background One of the main functions of an aircraft fuel system is to supply the engine with constantly stable fuel under any conditions, for which negative overload flight is the most severe condition of stable fuel supply. The crude oil filter is arranged in the oil tank of the traditional fuel system to serve as an oil supply port, so that the unavailable oil is minimized, the oil supply port is generally arranged at the bottommost part of the oil tank, but when the negative overload flies, the oil in the oil tank can float upwards, so that short empty oil is formed at the bottom, and the oil supply is unstable. Meanwhile, the oil supply needs to consider that the unavailable oil is less, the fuel utilization rate is improved, and free water in the fuel is ensured to enter the engine. Disclosure of Invention The invention aims to provide an anti-overload oil filter assembly, which solves the problems of poor anti-overload performance and low fuel utilization rate in the prior art. In order to achieve the above object, the present invention provides an anti-load oil filter assembly comprising: The oil cup is of a structure with a closed top and a circumference and an open bottom, is fixedly arranged on the inner side of an installation opening at the bottom of the oil tank body, and a gap for fuel to pass through is formed between the bottom of the oil cup and the bottom of the oil tank body; The oil supply port is sealed to stretch into the oil cup from the installation port of oil tank body bottom, and the oil feed end of oil supply port is located the middle high position of oil cup. Optionally, the oil inlet end of the oil supply port is positioned at the position of 1/3 to 2/3 of the height of the oil cup. Optionally, the lower part of the oil cup is provided with a plurality of mounting claws, and the oil cup is fixedly arranged at the inner side of a mounting opening at the bottom of the oil tank body through the mounting claws; the mounting surface of the mounting claw is lower than the lower edge of the oil cup, so that a gap for the fuel to pass through is formed. Optionally, the anti-negative overload oil filter assembly further comprises an oil collecting seat, wherein the oil collecting seat is arranged on the outer side of an installation opening at the bottom of the oil tank body and is in sealing connection with the oil tank body, and a downward concave oil collecting cavity is formed in the oil collecting seat; The oil supply port is arranged on the oil collecting seat and penetrates through the oil collecting cavity to extend into the oil cup. Optionally, a first sealing gasket is arranged between the oil collecting seat and the oil tank body. Optionally, a filter element mounting hole is formed in the oil collecting seat; A filter element base is arranged in the filter element mounting hole, and the filter element base is in sealing connection with the oil collecting seat; The filter element is arranged on the filter element base, the filter element extends upwards to the inside of the oil cup, and the oil supply port penetrates through the filter element base and the inside of the filter element. Optionally, a second sealing gasket is arranged between the filter element base and the oil collecting base. Optionally, an exhaust valve mounting hole is formed in the oil collecting seat and is communicated with the oil collecting cavity; An exhaust valve is arranged in the exhaust valve mounting hole, the exhaust valve comprises a valve body, a reset spring and a second O-shaped ring, the second O-shaped ring is used for sealing between the exhaust valve and the exhaust valve mounting hole, and the reset spring is used for pressing the exhaust valve at a sealing position; the lower end of the exhaust pipe is communicated with the exhaust valve, the upper end of the exhaust pipe extends upwards into the oil cup, the upper end of the exhaust pipe is positioned at the upper part of the oil cup and is higher than the oil inlet end of the oil supply port, and an exhaust gap is reserved between the upper end of the exhaust pipe and the top of the oil cup. Optionally, a pollution discharge plug mounting hole is formed in the oil collecting seat and is communicated with the oil collecting cavity; A drain plug is arranged in the drain plug mounting hole, and the drain plug is in sealing and detachable connection with the oil collecting seat; The head of the pollution discharge plug is positioned at the lowest point of the oil collecting cavity and is used for discharging free water accumulated at the bottom of the oil collecting cavity. Optionally, an O-shaped ring I is arranged between the pollution discharge plug and the oil collecting seat. The anti-overload oil filter assembly has the beneficial technical effect