Water filter element for aircraft

Abstract

The water filter element comprises a main shell and a filter element body, the main shell comprises an upper shell body and a lower shell body, the upper shell body and the lower shell body are closed to form a filter element cavity, and the upper shell body is provided with a main connector part; the filter element main body is arranged in the filter element cavity, and a filter element connector part is arranged at the upper end of the filter element main body; the lower shell is provided with a ventilation valve assembly capable of communicating the filter element cavity with external air; the lower end of the lower shell is provided with a ventilation channel used for installing the ventilation valve assembly, the ventilation valve assembly comprises a waterproof ventilation film, a one-way bead, a one-way bead support, the one-way bead support and a closing-in structure corresponding to the one-way bead, and the one-way bead is matched with the closing-in structure of the one-way bead support to form a one-way valve structure; the water filter element can suck air from the outside to meet the requirement of internal and external pressure balance when the water filter element is in negative pressure through the waterproof breathable film, and the one-way valve structure can effectively prevent water permeating through the waterproof breathable film from flowing out, so that the water leakage prevention performance of the water filter element is improved.

Description

Technical Field

[0001] The invention relates to the technical field of filter elements, and in particular to a water filter element used in aircraft. Background Art

[0002] Water filters used in aircraft usually need to have high integration and high reliability due to the needs of the application scenarios to ensure stability and safety during use. When the water filter is used for the first time or the air pressure in the cabin changes during the flight of the aircraft, the pressure in the water filter will be high pressure or negative pressure relative to the pressure in the cabin. In particular, when the water filter is under negative pressure, the filter water circuit is generally set with a check valve (to prevent water backflow and pollution), making it impossible for the water filter to return to the balanced air pressure. Therefore, it is usually necessary to configure a ventilation valve to balance the internal and external pressures of the water filter, thereby improving the stability and safety of the water filter during use. However, traditional ventilation valves mostly use one-way or two-way breathable membrane valves, and the waterproof breathable membrane cannot completely isolate water. When the water pressure in the filter is too high, water seepage and other leakage will still occur, which can easily cause equipment short circuits, corrosion and other conditions. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a water filter element for aircraft, which has good water leakage prevention performance.

[0004] 14. The filter element as claimed in claim 13, wherein the filter element has a first end and a second end, and the filter element has a first end and a second end. The filter element has a first end and a second end, and the filter element has a second end. The filter element has a first end and a second end, and the filter element has a second end.

[0005] A water filter element for use in an aircraft according to an embodiment of the present invention has at least the following beneficial effects: a one-way valve structure is formed by configuring a one-way bead and cooperating with the closing structure of the one-way bead bracket, and the water filter element can inhale air from the outside through the waterproof breathable membrane when a negative pressure is present to meet the requirement of internal and external pressure balance, and the one-way valve structure can effectively prevent water that has penetrated through the waterproof breathable membrane from flowing out, thereby improving the water leakage prevention performance of the water filter element.

[0006] According to some embodiments of the present invention, the breathable valve assembly further comprises a supporting net, wherein the supporting net is arranged between the waterproof breathable membrane and the one-way bead bracket.

[0007] According to some embodiments of the present invention, a protective net is disposed below the one-way bead bracket.

[0008] According to some embodiments of the present invention, the supporting net and / or the protective net is a stainless steel net.

[0009] According to some embodiments of the present invention, a support seat is fixedly provided at the lower portion of the ventilation channel, a connecting channel is provided in the middle portion of the support seat, the one-way bead bracket is provided above the support seat, a one-way bead sealing ring corresponding to the one-way bead is provided at the upper portion of the support seat, and the protective net is provided at the lower portion of the support seat.

[0010] According to some embodiments of the present invention, a bottom cover is provided at the lower end of the lower shell, the bottom cover is provided with a bottom cover through hole corresponding to the ventilation channel, and the lower shell cover is installed under the support seat to limit the support seat from detaching downward from the lower shell.

[0011] According to some embodiments of the present invention, a support seat sealing ring is provided between the support seat and the lower shell.

[0012] According to some embodiments of the present invention, a plurality of annular support ridges that are spaced apart are disposed at the upper end of the one-way bead support, and the support net is disposed above the support ridges.

[0013] According to some embodiments of the present invention, the filter element interface portion is provided with a sealing gasket and a sealing gasket bracket, the outer edge of the sealing gasket can abut against the inner wall of the upper shell, and the sealing gasket bracket abuts against the sealing gasket and bends the outer edge of the sealing gasket downward.

[0014] According to some embodiments of the present invention, the sealing gasket bracket can be movably arranged on the filter element interface part and / or the upper shell body, and the filter element interface part and / or the upper shell body are provided with a limiting structure that can limit the movable range of the sealing gasket bracket in the up and down directions.

[0015] According to some embodiments of the present invention, the sealing gasket bracket includes a circular portion and a plurality of abutting rod portions which are spaced apart on the circular portion and extend obliquely downward, the circular portion is sleeved on the filter element interface portion and can move up and down along the filter element interface portion, the limiting structure includes a plurality of positioning cross rod portions which are spaced apart on the inner wall of the main interface portion and extend toward the filter element interface portion, the abutting rod portions can extend downward through the gaps between adjacent positioning cross rod portions until they abut against the sealing gasket, and the positioning cross rod portions limit the downward movement of the circular portion.

[0016] According to some embodiments of the present invention, the filter element interface portion is provided with an annular groove capable of receiving the end of the positioning cross bar portion.

[0017] According to some embodiments of the present invention, the sealing gasket bracket includes a circular ring portion and a plurality of abutment rod portions which are spaced apart on the circular ring portion and extend obliquely downward, the circular ring portion is sleeved on the filter element interface portion and can move up and down along the filter element interface portion, the abutment rod portion can extend downward to abut against the sealing gasket, the limiting structure includes a limiting step portion arranged on the inner wall of the main interface portion, the abutment rod portion is provided with a limiting protrusion corresponding to the limiting step portion, and the limiting protrusion cooperates with the limiting step portion to limit the upward movement of the sealing gasket bracket.

[0018] According to some embodiments of the present invention, the sealing gasket bracket includes a circular portion and a plurality of abutment rod portions which are spaced apart on the circular portion and extend obliquely downward, the circular portion is sleeved on the filter element interface portion and can move up and down along the filter element interface portion, the abutment rod portions can extend downward to abut against the sealing gasket, and the limiting structure includes an annular ridge arranged on the filter element interface portion corresponding to the circular portion, the outer diameter of the annular ridge being larger than the inner diameter of the circular portion to limit the downward movement of the sealing gasket bracket.

[0019] According to some embodiments of the present invention, a positioning column extending downward is disposed at the lower end of the filter element body, and a positioning hole capable of inserting the positioning column is disposed in the inner cavity of the lower shell.

[0020] According to some embodiments of the present invention, the water filter element further includes a protective shell, the protective shell includes an upper protective shell and a lower protective shell, and an inner cavity capable of accommodating the main shell is formed between the upper protective shell and the lower protective shell.

[0021] According to some embodiments of the present invention, the upper protective shell and the lower protective shell are detachably connected.

[0022] According to some embodiments of the present invention, the joint between the upper protective shell and the lower protective shell is connected by a snap mechanism.

[0023] According to some embodiments of the present invention, the water filter element further comprises an end cover, wherein the end cover is mounted on the upper protective shell and covers the filter element interface portion and the main interface portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 It is a schematic structural diagram of a water filter element according to an embodiment of the present invention;

[0026] Figure 2 This is one of the exploded schematic diagrams of the water filter element according to an embodiment of the present invention;

[0027] Figure 3 This is the second exploded schematic diagram of the water filter element according to the embodiment of the present invention;

[0028] Figure 4 It is a schematic diagram of the cross-sectional structure of a water filter element according to an embodiment of the present invention;

[0029] Figure 5 is an exploded schematic diagram of a breathable valve assembly according to an embodiment of the present invention;

[0030] Figure 6 for Figure 4 A partial enlarged schematic diagram of part A;

[0031] Figure 7 It is a structural schematic diagram of a partial cross section of an upper shell of an embodiment of the present invention;

[0032] Figure 8 Schematic diagram of the structure of the sealing pad bracket according to an embodiment of the present invention.

[0033] Reference numerals:

[0034] Filter element cavity 101, upper shell 110, main interface portion 111, positioning cross bar portion 112, limiting step portion 113, lower shell 120, ventilation channel 121, positioning hole 122;

[0035] The filter element body 200, the filter element interface portion 210, the annular ridge 211, the annular groove 212, the sealing gasket 220, the sealing gasket bracket 240, the annular portion 241, the abutting rod portion 242, the limiting protrusion 243, and the positioning column 250;

[0036] Breathable valve assembly 300, waterproof breathable membrane 310, support net 320, one-way bead 330, one-way bead bracket 340, closing structure 341, support rib 342, protection net 350, support seat 360, connecting channel 361, support seat sealing ring 362, one-way bead sealing ring 363, bottom cover 370, bottom cover through hole 371;

[0037] An upper protective shell 410 , a lower protective shell 420 , and an end cover 430 . DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0041] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0042] Reference below Figures 1 to 8 A water filter element for use in an aircraft according to an embodiment of the present invention is described.

[0043] like Figures 1 to 6 As shown, a water filter element for aircraft according to an embodiment of the present invention comprises: a main housing and a filter element body 200, the main housing comprising an upper housing 110 and a lower housing 120, the upper housing 110 and the lower housing 120 are covered to form a filter element cavity 101, the upper housing 110 is provided with a main interface portion 111 connected to the filter element cavity 101; the filter element body 200 is arranged in the filter element cavity 101, and the upper end of the filter element body 200 is provided with a filter element interface portion 210 placed in the main interface portion 111; the lower housing 120 is provided with a filter element cavity 101 and an external filter element cavity 101. An air-connected breathable valve assembly 300; a ventilation channel 121 for installing the breathable valve assembly 300 is provided at the lower end of the lower shell 120, the breathable valve assembly 300 includes a waterproof breathable membrane 310, a one-way bead 330, and a one-way bead bracket 340, the one-way bead bracket 340 is arranged in the ventilation channel 121, the one-way bead bracket 340 is provided with a closing structure 341 that closes from top to bottom and corresponds to the one-way bead 330, the one-way bead 330 can be movably arranged in the one-way bead bracket 340, and a waterproof breathable membrane 310 is arranged above the one-way bead bracket 340.

[0044] By configuring the one-way bead 330 and the closing structure 341 of the one-way bead bracket 340, a one-way valve structure is formed. When the water filter element is under negative pressure, air can be sucked in from the outside through the waterproof breathable membrane 310 to meet the requirement of internal and external pressure balance. The one-way valve structure can effectively prevent water that has penetrated through the waterproof breathable membrane 310 from flowing out, thereby improving the water leakage prevention performance of the water filter element.

[0045] Specifically, Figure 6 As shown, when the water pressure in the water filter element is too high and causes the waterproof breathable membrane 310 to leak, water enters the ventilation channel 121 and pushes the one-way bead 330 downward, so that the one-way bead 330 abuts against the closing structure 341 to seal the ventilation channel 121, thereby achieving the effect of preventing water leakage.

[0046] It should be noted that the closing structure 341 of the one-way bead 330 and the one-way bead bracket 340 constitute a one-way valve structure, thereby reducing the occurrence of water leakage to the outside, and at the same time, it can also meet the external airflow into the filter element and eliminate the negative pressure in the filter element. At the same time, the waterproof and breathable membrane 310 can also block external water from entering the valve core and reduce water pollution. When the internal pressure of the filter element is too high due to the injection of water during the first use of the filter element, the gas can be discharged directly through the exhaust valve of the filter or the faucet of the filter.

[0047] In some embodiments of the present invention, the upper shell 110 and the lower shell 120 are connected by ultrasonic rotary welding so that the joint between the upper shell 110 and the lower shell 120 has a better sealing effect, is less likely to leak, and has better pressure bearing capacity.

[0048] It can be understood that, in some embodiments of the present invention, the upper shell 110 and the lower shell 120 may also be assembled by bonding, threaded connection, etc., which will not be described in detail herein.

[0049] like Figure 5 , Figure 6 As shown, in some embodiments of the present invention, the air valve assembly 300 also includes a support net 320, which is arranged between the waterproof and breathable membrane 310 and the one-way bead bracket 340. The support net 320 is located below the waterproof and breathable membrane 310 and is close to the waterproof and breathable membrane 310, so as to support the waterproof and breathable membrane 310, reduce the deformation of the waterproof and breathable membrane 310, and improve the reliability of the use of the waterproof and breathable membrane 310.

[0050] Specifically, the support mesh 320 is a metal mesh, a hard plastic mesh, or the like.

[0051] In some embodiments of the present invention, the support net 320 is a stainless steel net. The support net 320 is made of food-grade stainless steel, has a better supporting effect, and is safer and more hygienic to use.

[0052] like Figure 5 , Figure 6 As shown, in some embodiments of the present invention, a protective net 350 is arranged below the one-way bead bracket 340. The protective net 350 can block external foreign matter from entering the ventilation channel 121, reduce the occurrence of water pollution, and the mesh of the protective net 350 can use the principle of capillary phenomenon to collect accidentally leaked water, which is convenient for users to observe and replace or maintain in time.

[0053] Specifically, when the water filter element still leaks due to assembly errors, processing errors and other factors, the leaked water will gather at the mesh holes of the protective net 350 to form water droplets (capillary phenomenon), which is not easy to drip directly, making it convenient for users to observe the sealing condition of the water filter element for timely maintenance or replacement.

[0054] In some embodiments of the present invention, the protective net 350 is a stainless steel net. The protective net 350 is made of food-grade stainless steel, has a better supporting effect, and is safer and more hygienic to use.

[0055] It is understandable that in some embodiments of the present invention, the protective net 350 may also be a hard plastic net, which will not be described in detail here.

[0056] like Figure 5 , Figure 6 As shown, in some embodiments of the present invention, a support seat 360 is fixedly provided at the lower portion of the ventilation channel 121, a connecting channel 361 is provided in the middle portion of the support seat 360, a one-way bead bracket 340 is provided above the support seat 360, a one-way bead sealing ring 363 corresponding to the one-way bead 330 is provided at the upper portion of the support seat 360, and a protective net 350 is provided at the lower portion of the support seat 360. The one-way sealing effect of the one-way bead 330 is improved by providing the one-way bead sealing ring 363.

[0057] Specifically, Figure 6 As shown, when the water pressure in the water filter element is too high and causes the waterproof breathable membrane 310 to leak, water enters the ventilation channel 121 and pushes the one-way bead 330 downward, so that the one-way bead 330 abuts against the closing structure 341. At the same time, the one-way bead 330 compresses the one-way bead sealing ring 363 to seal the ventilation channel 121, thereby improving the water leakage prevention effect.

[0058] In some embodiments of the present invention, at least one of the outer ring, upper end surface, and lower end surface of the one-way bead seal ring 363 is provided with a recessed structure to improve the elastic deformation performance of the one-way bead seal ring 363 and improve the sealing effect.

[0059] like Figure 5 As shown, in some embodiments of the present invention, a convex ridge is provided on the outer edge of the support base 360, and a concave position corresponding to the support base 360 ​​is provided on the lower end of the lower shell 120 to stably install the support base 360.

[0060] Specifically, the support base 360 ​​can be installed to the lower end of the lower shell 120 by tight fitting, snap-fitting or an auxiliary mounting cover.

[0061] like Figure 5 , Figure 6As shown, in some embodiments of the present invention, a support seat sealing ring 362 is provided between the support seat 360 and the lower shell 120 to improve the sealing effect between the support seat 360 and the lower shell 120 .

[0062] like Figure 5 , Figure 6 As shown, in some embodiments of the present invention, a bottom cover 370 is provided at the lower end of the lower shell 120, and the bottom cover 370 is provided with a bottom cover through hole 371 corresponding to the ventilation channel 121, and the lower shell 120 cover is installed under the support seat 360 to limit the support seat 360 from detaching downward from the lower shell 120, thereby achieving the fixation of the support seat 360 and other components of the air valve assembly 300.

[0063] Specifically, during assembly, the waterproof breathable membrane 310, the supporting net 320, the one-way bead 330, the one-way bead bracket 340, the one-way bead sealing ring 363, the supporting seat 360, and the protective net 350 are sequentially installed into the ventilation channel 121 from bottom to top, and finally the bottom cover 370 is installed to complete the assembly of the breathable valve assembly 300.

[0064] In some embodiments of the present invention, the bottom cover 370 can be installed to the lower end of the lower housing 120 by snapping, tight fitting, screwing, etc.

[0065] like Figure 5 As shown, in some embodiments of the present invention, a plurality of annular and spaced support ribs 342 are provided at the upper end of the one-way bead bracket 340, and the support net 320 is provided above the support ribs 342. By providing the support ribs 342, the obstruction of the support net 320 and the waterproof breathable membrane 310 is reduced to maintain a better ventilation effect.

[0066] like Figure 4 As shown, in some embodiments of the present invention, the filter element interface portion 210 is provided with a sealing gasket 220 and a sealing gasket bracket 240, the outer edge of the sealing gasket 220 can abut against the inner wall of the upper shell 110, the sealing gasket bracket 240 abuts against the sealing gasket 220 and makes the outer edge of the sealing gasket 220 bend downward (not shown in the figure), and the sealing gasket 220 with the outer edge bent downward has a certain anti-return sealing effect.

[0067] Specifically, the sealing gasket 220 is installed to the filter element interface portion 210 by means of a clamping position, etc., the outer edge of the sealing gasket 220 abuts against the inner wall of the upper shell 110 to form a sealing structure, and the outer edge of the sealing gasket 220 is bent downward by the sealing gasket bracket 240, such as Figure 4 As shown, the gap between the filter element body 200 and the inner wall of the filter element cavity 101 forms a water inlet cavity. The sealing gasket 220 allows water to enter the water inlet cavity from top to bottom. At the same time, it has a reverse sealing function, which can prevent the water in the water inlet cavity from flowing from bottom to top, thereby achieving a non-reverse sealing effect.

[0068] In some embodiments of the present invention, the sealing gasket bracket 240 can be movably disposed on the filter element interface portion 210 and / or the upper shell 110, and the filter element interface portion 210 and / or the upper shell 110 are provided with a limiting structure that can limit the movable range of the sealing gasket bracket 240 in the up and down directions, that is, the sealing gasket bracket 240 can move within a set up and down distance, so that the sealing gasket 220 has a certain deformation performance to achieve the desired anti-return sealing effect.

[0069] Specifically, when the water in the water inlet chamber tends to flow from bottom to top, the sealing gasket 220 is pushed close to the inner wall of the filter element chamber 101 to achieve a non-return sealing effect. At this time, the sealing gasket bracket 240 can move upward to a set distance so that the sealing gasket 220 can have a larger area to be close to the inner wall of the filter element chamber 101 to achieve a better sealing effect.

[0070] like Figure 4 , Figure 7 , Figure 8 As shown, in some embodiments of the present invention, the sealing gasket bracket 240 includes a circular portion 241 and a plurality of abutting rod portions 242 that are spaced apart on the circular portion 241 and extend obliquely downward, the circular portion 241 is sleeved on the filter element interface portion 210 and can move up and down along the filter element interface portion 210, the limiting structure includes a plurality of positioning cross rod portions 112 that are spaced apart on the inner wall of the main interface portion 111 and extend toward the filter element interface portion 210, the abutting rod portion 242 can extend downward through the gap between adjacent positioning cross rod portions 112 to abut against the sealing gasket 220, and the positioning cross rod portion 112 limits the downward movement of the circular portion 241.

[0071] Specifically, the end of the positioning cross bar portion 112 extends to the position of the shielding annular portion 241, thereby achieving the desired limiting effect.

[0072] like Figure 4 As shown, in some embodiments of the present invention, the filter element interface portion 210 is provided with an annular groove 212 into which the end of the positioning cross bar portion 112 can be inserted, so as to position the relative position of the upper shell 110 and the filter element body 200, so as to ensure a better flow effect of the water inlet channel, and can play a better limiting role on the circular ring portion 241.

[0073] like Figure 4 , Figure 7 , Figure 8As shown, in some embodiments of the present invention, the sealing gasket bracket 240 includes a circular portion 241 and a plurality of abutting rod portions 242 which are spaced apart on the circular portion 241 and extend obliquely downward. The circular portion 241 is sleeved on the filter element interface portion 210 and can move up and down along the filter element interface portion 210. The abutting rod portion 242 can extend downward to abut against the sealing gasket 220. The limiting structure includes a limiting step portion 113 arranged on the inner wall of the main interface portion 111. The abutting rod portion 242 is provided with a limiting protrusion 243 corresponding to the limiting step portion 113. The limiting protrusion 243 cooperates with the limiting step portion 113 to limit the upward movement of the sealing gasket bracket 240.

[0074] In some embodiments of the present invention, the sealing pad bracket 240 is made of plastic material, so that the abutting rod portion 242 of the long structure has a certain elastic bending performance to facilitate the installation and removal of the sealing pad bracket 240.

[0075] like Figure 4 , Figure 8 As shown, in some embodiments of the present invention, the sealing gasket bracket 240 includes a circular portion 241 and a plurality of abutment rod portions 242 which are spaced apart on the circular portion 241 and extend obliquely downward. The circular portion 241 is sleeved on the filter element interface portion 210 and can move up and down along the filter element interface portion 210. The abutment rod portion 242 can extend downward to abut against the sealing gasket 220. The limiting structure includes an annular ridge 211 which is arranged on the filter element interface portion 210 and corresponds to the circular portion 241. The outer diameter of the annular ridge 211 is larger than the inner diameter of the circular portion 241 to limit the downward movement of the sealing gasket bracket 240.

[0076] like Figure 4 , Figure 8 As shown, in some embodiments of the present invention, the outer side of the annular ridge 211 and the inner side of the circular ring portion 241 are corresponding inclined structures to better position the sealing pad bracket 240 and improve its supporting effect on the sealing pad 220.

[0077] like Figure 2 , Figure 4 As shown, in some embodiments of the present invention, the lower end of the filter element body 200 is provided with a positioning column 250 extending downward, and the inner cavity of the lower shell 120 is provided with a positioning hole 122 for inserting the positioning column 250. When the filter element is assembled, the positioning column 250 is inserted into the positioning hole 122 to locate the position of the filter element body 200, so that the filter element body 200 can be centrally arranged in the filter element cavity 101, so that the gap between the outer wall of the filter element body 200 and the inner wall of the filter element cavity 101 remains approximately the same, thereby improving the filtering effect of the filter element body 200.

[0078] Specifically, a water inlet cavity is formed between the outer wall of the filter element body 200 and the inner wall of the filter element cavity 101. By plugging and fitting the positioning column 250 with the positioning hole 122, the filter element body 200 can be centrally arranged in the filter element cavity 101, so that the water inlet cavity is roughly evenly distributed on the periphery of the filter element body 200, thereby improving the filtering effect of the filter element body 200.

[0079] like Figure 2 , Figure 4 As shown, in some embodiments of the present invention, the end of the positioning column 250 is a ball head structure to facilitate its insertion into the positioning hole 122.

[0080] It can be understood that in some embodiments of the present invention, the end of the positioning column 250 can also be configured as a pointed structure, which will not be described in detail herein.

[0081] like Figure 4 As shown, in some embodiments of the present invention, the filter element interface portion 210 is provided with an annular groove 212 into which the end of the positioning cross bar portion 112 can be inserted, so as to position the relative position of the upper shell 110 and the filter element body 200, and the position of the filter element body 200 is positioned from the upper part of the filter element body 200, so that the upper part of the filter element body 200 is roughly centered in the filter element cavity 101, and the above-mentioned positioning column 250 and the positioning hole 122 are plug-in-fitted, so that the lower part of the filter element body 200 can be centered in the filter element cavity 101, and the combined effect makes the filter element body 200 as a whole centered in the filter element cavity 101, so that the filter element body 200 can achieve a better filtering effect.

[0082] like Figures 1 to 4 As shown, in some embodiments of the present invention, the water filter element also includes a protective shell, which includes an upper protective shell 410 and a lower protective shell 420. An inner cavity capable of accommodating the main shell is formed between the upper protective shell 410 and the lower protective shell 420 to protect the water filter element when it is not in use, thereby facilitating transportation and storage.

[0083] In some embodiments of the present invention, the upper protective shell 410 and the lower protective shell 420 are detachably connected to facilitate the removal and placement of the filter element.

[0084] In some embodiments of the present invention, the joints of the upper protective shell 410 and the lower protective shell 420 are connected by a snap mechanism to achieve detachable assembly of the upper protective shell 410 and the lower protective shell 420 .

[0085] Specifically, a snap-on portion is provided in an annular shape on the upper outer edge of the lower protective shell 420, and an annular groove corresponding to the snap-on portion is provided on the lower inner wall of the upper protective shell 410. The snap-on portion can be inserted into the annular groove, thereby detachably assembling the upper protective shell 410 and the lower protective shell 420.

[0086] In some embodiments of the present invention, the upper protective shell 410 and the lower protective shell 420 are made of plastic material and have certain elastic deformation properties, which can facilitate the engagement and disassembly of the snap mechanism.

[0087] It can be understood that, in some embodiments of the present invention, the upper protective shell 410 and the lower protective shell 420 can also be connected by threads, which can also meet the requirements of detachable connection.

[0088] like Figures 1 to 4 As shown, in some embodiments of the present invention, the water filter element further includes an end cover 430 , which is mounted on the upper protective shell 410 and covers the filter element interface portion 210 and the main interface portion 111 to protect the filter element interface portion 210 and the main interface portion 111 .

[0089] In some embodiments of the present invention, the end cover 430 can be installed to the upper protective shell 410 by means of threaded fitting, rotational snap-fitting, etc.

[0090] Of course, the invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A water filter element for aircraft, characterized in that: include: A main housing, the main housing comprising an upper housing (110) and a lower housing (120), the upper housing (110) and the lower housing (120) being covered to form a filter element cavity (101), the upper housing (110) being provided with a main interface portion (111) connected to the filter element cavity (101); A filter element body (200), the filter element body (200) being arranged in the filter element cavity (101), and a filter element interface portion (210) which is inserted into the main interface portion (111) is arranged at the upper end of the filter element body (200); Wherein, the lower housing (120) is provided with a breathable valve assembly (300); The lower end of the lower shell (120) is provided with a ventilation channel (121) for installing the ventilation valve assembly (300), and the ventilation valve assembly (300) includes a waterproof breathable membrane (310), a one-way bead (330), and a one-way bead bracket (340). The one-way bead bracket (340) is arranged in the ventilation channel (121), and the one-way bead bracket (340) is provided with a closing structure (341) that closes from top to bottom and corresponds to the one-way bead (330). The one-way bead (330) can be movably arranged in the one-way bead bracket (340), and the waterproof breathable membrane (310) is arranged above the one-way bead bracket (340).

2. A water filter element for aircraft according to claim 1, characterized in that: The breathable valve assembly (300) further comprises a supporting net (320), wherein the supporting net (320) is arranged between the waterproof breathable membrane (310) and the one-way bead bracket (340).

3. A water filter element for aircraft according to claim 1, characterized in that: A protective net (350) is disposed below the one-way bead bracket (340).

4. A water filter element for aircraft according to claim 3, characterized in that: A support seat (360) is fixedly provided at the lower part of the ventilation channel (121), a connecting channel (361) is provided in the middle part of the support seat (360), the one-way bead bracket (340) is provided above the support seat (360), a one-way bead sealing ring (363) corresponding to the one-way bead (330) is provided at the upper part of the support seat (360), and the protective net (350) is provided at the lower part of the support seat (360).

5. A water filter element for aircraft according to claim 4, characterized in that: A bottom cover (370) is provided at the lower end of the lower shell (120), and the bottom cover (370) is provided with a bottom cover through hole (371) corresponding to the ventilation channel (121). The lower shell (120) cover is installed below the support seat (360) to limit the support seat (360) from detaching downward from the lower shell (120).

6. The water filter element for aircraft according to claim 1, characterized in that: The filter element interface portion (210) is provided with a sealing gasket (220) and a sealing gasket bracket (240); the outer edge of the sealing gasket (220) can abut against the inner wall of the upper shell (110); the sealing gasket bracket (240) abuts against the sealing gasket (220) and causes the outer edge of the sealing gasket (220) to bend downward.

7. A water filter element for aircraft according to claim 6, characterized in that: The sealing pad bracket (240) can be movably arranged on the filter element interface portion (210) and / or the upper shell (110), and the filter element interface portion (210) and / or the upper shell (110) are provided with a limiting structure capable of limiting the movable range of the sealing pad bracket (240) in the up and down directions.

8. A water filter element for aircraft according to claim 7, characterized in that: The sealing pad bracket (240) includes a circular ring portion (241) and a plurality of abutting rod portions (242) which are spaced apart on the circular ring portion (241) and extend obliquely downward; the circular ring portion (241) is sleeved on the filter element interface portion (210) and can move up and down along the filter element interface portion (210); the limiting structure includes a plurality of positioning cross rod portions (112) which are spaced apart on the inner wall of the main interface portion (111) and extend toward the filter element interface portion (210); the abutting rod portion (242) can extend downward through the gap between adjacent positioning cross rod portions (112) to abut against the sealing pad (220); the positioning cross rod portion (112) limits the downward movement of the circular ring portion (241).

9. A water filter element for use in an aircraft according to claim 7, characterized in that: The sealing pad bracket (240) comprises a circular ring portion (241) and a plurality of abutting rod portions (242) which are arranged at intervals on the circular ring portion (241) and extend obliquely downward; the circular ring portion (241) is sleeved on the filter element interface portion (210) and can move up and down along the filter element interface portion (210); the abutting rod portion (242) can extend downward to abut against the sealing pad (220); the limiting structure comprises a limiting step portion (113) arranged on the inner wall of the main interface portion (111); the abutting rod portion (242) is provided with a limiting protrusion (243) corresponding to the limiting step portion (113); the limiting protrusion (243) cooperates with the limiting step portion (113) to limit the upward movement of the sealing pad bracket (240).

10. The water filter element for aircraft according to claim 7, characterized in that: The sealing pad support (240) comprises a circular ring portion (241) and a plurality of abutting rod portions (242) which are arranged at intervals on the circular ring portion (241) and extend obliquely downward; the circular ring portion (241) is sleeved on the filter element interface portion (210) and can move up and down along the filter element interface portion (210); the abutting rod portion (242) can extend downward to abut against the sealing pad (220); the limiting structure comprises an annular ridge (211) arranged on the filter element interface portion (210) corresponding to the circular ring portion (241); the outer diameter of the annular ridge (211) is greater than the inner diameter of the circular ring portion (241) so as to limit the downward movement of the sealing pad support (240).

Images