Filter screen assembly and drainage device

A filter and component technology, applied in aircraft accessories, filtration separation, fixed filter element filters, etc., can solve problems such as easy damage and limitation of filter performance.

Pending Publication Date: 2022-07-15
COMAC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solution 3: Install a filter screen at the drain hole of the water storage tray, the filter screen is too close to the outside, and it is easy to be damaged
And the filter screen itself needs to have a certain strength, so the flat sheet metal small hole filter screen is generally used, resulting in limited filtering performance of the filter screen

Method used

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  • Filter screen assembly and drainage device
  • Filter screen assembly and drainage device
  • Filter screen assembly and drainage device

Examples

Experimental program
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Effect test

Embodiment approach 1

[0070] figure 1 It is a schematic diagram showing the position of the door of the aircraft. like figure 1 As shown, the aircraft cabin doors are mainly divided into three types: a boarding door 100 , a service door 200 , and an emergency door 300 . In the present embodiment, the drainage structure at the boarding gate 100 will be described as an example.

[0071] figure 2 is a perspective view of the nose section, image 3 is a partial enlarged view showing the drainage structure of the boarding gate, yes figure 2 Enlarged view of section F. like image 3 As shown, the drainage device 1 includes a sill sump 10, a filter screen assembly 20, a drainage pipe 30, a one-way valve 40, a flange joint 50, and the like. The door sill water pan 10 is provided on the floor of the hatch. The filter screen assembly 20 and the one-way valve 40 and the one-way valve 40 and the flange joint 50 are connected by hoses. The flange joint 50 is connected with the fuselage skin through r...

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PUM

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Abstract

The invention discloses a filter screen assembly and a drainage device using the filter screen assembly. An opening in one end of the filter screen assembly is communicated with a drainage hole of a threshold water collecting disc of an airplane, an opening in the other end of the filter screen assembly is communicated with a drainage pipe, and the filter screen assembly comprises an upper connector (201) and a lower connector (201), the fastening piece (204) is arranged on the periphery of the upper connector in a sleeving manner and is used for fastening the upper connector, the lower connector, the sealing ring and the filter screen which are arranged on the inner periphery of the fastening piece; the sealing ring (203) is clamped between the upper joint and the lower joint; the filter screen (202) is clamped between the sealing ring and the lower joint in a manner that a filter surface protrudes to the hollow part of the upper joint; one end of the lower connector (205) is connected with the fastener, and the other end of the lower connector (205) is connected with a drainage pipe. Maintenance is very convenient, and the weight advantage is achieved. And smooth drainage can be realized while the maintenance cost and the weight of the machine body are reduced.

Description

technical field [0001] The invention relates to a filter screen assembly and a drainage device using the filter screen assembly, which are used for discharging liquid inside an aircraft body. Background technique [0002] Because the aircraft cabin door is located in the upper half of the fuselage arc, when the cabin door is opened in rainy and snowy weather, the rainwater is easy to drip on the floor of the opening area of ​​the cabin door. Raindrops falling on the floor in the door opening area can make the cabin floor slippery and need to be drained out of the fuselage. The aircraft needs to ensure the pressurization and airtightness during the flight, so the drainage channel cannot be directly connected to the outside of the aircraft, and a one-way valve needs to be set (open the drainage within a certain range of internal and external pressure difference, when the internal and external pressure difference is high, namely The passage is closed when the flight altitude i...

Claims

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Application Information

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IPC IPC(8): B01D35/02B01D29/00B01D29/96B64C1/14
CPCB01D35/02B01D29/00B01D29/96B64C1/14
Inventor 孙则徐王国庆于雷
Owner COMAC
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