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 combined in a covering mode 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 utility model relates to filter core technical field, especially a water filter core for aircraft. BACKGROUND

[0002] The water filter core for aircraft, due to the need of use occasion, usually needs to have the characteristics such as high integration, high reliability, to ensure the stability and safety when using, when the water filter core is used for the first time or the air pressure in the cabin of the aircraft changes in the flight process, the pressure in the water filter core relative to the pressure in the cabin will appear high pressure or negative pressure, especially when the water filter core is in negative pressure, because the filter waterway is generally set to prevent backflow (to prevent pollution), so that the water filter core cannot recover to the balanced air pressure, so it is usually necessary to configure a breather valve to balance the internal and external pressure of the water filter core, so as to improve the stability and safety of the water filter core when using, but the traditional breather valve is mostly one-way or two-way air permeable membrane valve, and the waterproof air permeable membrane cannot completely isolate water, and when the water pressure in the filter core is too high, water leakage such as water seepage will still occur, which is easy to cause equipment short circuit, corrosion and other conditions. SUMMARY

[0003] The utility model aims at at least solving one of the technical problems existing in the prior art. To this end, the utility model provides a water filter core for aircraft, which has good water leakage prevention performance.

[0004] The water filter core for aircraft according to the first aspect embodiment of the utility model, comprising: a main shell and a filter core body, the main shell comprises an upper shell and a lower shell, the upper shell and the lower shell are covered to form a filter core cavity, and the upper shell is provided with a main interface part communicated to the filter core cavity; the filter core body is arranged in the filter core cavity, and the filter core body is provided with a filter core interface part inserted into the main interface part at the upper end; the lower shell is provided with an air permeable valve assembly capable of communicating the filter core cavity with external air; the lower end of the lower shell is provided with a breather channel for installing the air permeable valve assembly, and the air permeable valve assembly comprises a waterproof air permeable membrane, a one-way bead and a one-way bead support; the one-way bead support is arranged in the breather channel, the one-way bead support is arranged to be tapered from top to bottom and the tapered structure corresponding to the one-way bead, the one-way bead is movably arranged in the one-way bead support, and the waterproof air permeable membrane is arranged above the one-way bead support.

[0005] The water filter core for the aircraft has at least the following beneficial effects: the cooperation of the one-way bead and the closing structure of the one-way bead support forms a one-way valve structure; the waterproof and breathable membrane enables air to be sucked from the outside when the water filter core is under negative pressure to meet the requirement of internal and external pressure balance; and the one-way valve structure can effectively prevent water permeated through the waterproof and breathable membrane from flowing outwards, thereby improving the water leakage prevention performance of the water filter core.

[0006] According to some embodiments of the present application, the air permeable valve assembly further comprises a support net arranged between the waterproof and breathable membrane and the one-way bead support.

[0007] According to some embodiments of the present application, the one-way bead support is arranged below a protective net.

[0008] According to some embodiments of the present application, the support net and / or the protective net are stainless steel nets.

[0009] According to some embodiments of the present application, the lower part of the air exchange channel is fixedly provided with a support seat, the middle part of the support seat is provided with a connecting channel, the one-way bead support is arranged above the support seat, the upper part of the support seat is provided with a one-way bead sealing ring corresponding to the one-way bead, and the protective net is arranged at the lower part of the support seat.

[0010] According to some embodiments of the present application, the lower end of the lower shell is provided with a bottom cover, the bottom cover is provided with a bottom cover through hole corresponding to the air exchange channel, and the lower shell cover is arranged below the support seat to limit the support seat from being separated downward from the lower shell.

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

[0012] According to some embodiments of the present application, the upper end of the one-way bead support is provided with a plurality of annular and spaced support edges, and the support net is arranged above the support edges.

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

[0014] According to some embodiments of the present application, the sealing gasket support is movably arranged in the filter core interface part and / or the upper shell, and the filter core interface part and / or the upper shell is provided with a limiting structure capable of limiting the movement range of the sealing gasket support in the up-down direction.

[0015] According to some embodiments of the utility model, the sealing gasket support includes a circular ring part and a plurality of abutting rod parts arranged at intervals in the circular ring part and extending obliquely downward, the circular ring part is sleeved on the filter element interface part and can move up and down along the filter element interface part, the limiting structure includes a plurality of positioning cross rod parts arranged at intervals on the inner wall of the main interface part and extending toward the filter element interface part, the abutting rod part can extend downward through the gap between adjacent positioning cross rod parts to abut against the sealing gasket, and the positioning cross rod part limits downward movement of the circular ring part.

[0016] According to some embodiments of the utility model, the filter element interface part is provided with an annular groove capable of accommodating the end of the positioning cross rod part.

[0017] According to some embodiments of the utility model, the sealing gasket support includes a circular ring part and a plurality of abutting rod parts arranged at intervals in the circular ring part and extending obliquely downward, the circular ring part is sleeved on the filter element interface part and can move up and down along the filter element interface part, the abutting rod part can extend downward to abut against the sealing gasket, the limiting structure includes a limiting step part arranged on the inner wall of the main interface part, the abutting rod part is provided with a limiting protrusion corresponding to the limiting step part, and the limiting protrusion and the limiting step part cooperate to limit upward movement of the sealing gasket support.

[0018] According to some embodiments of the utility model, the sealing gasket support includes a circular ring part and a plurality of abutting rod parts arranged at intervals in the circular ring part and extending obliquely downward, the circular ring part is sleeved on the filter element interface part and can move up and down along the filter element interface part, the abutting rod part can extend downward to abut against the sealing gasket, the limiting structure includes an annular convex rib arranged corresponding to the filter element interface part and the circular ring part, and the outer diameter of the annular convex rib is greater than the inner diameter of the circular ring part to limit downward movement of the sealing gasket support.

[0019] According to some embodiments of the utility model, the lower end of the filter element main body is provided with a positioning column extending downward, and the inner cavity of the lower shell is provided with a positioning hole capable of accommodating the positioning column.

[0020] According to some embodiments of the utility model, 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 utility model, the upper protective shell and the lower protective shell are detachably connected.

[0022] According to some embodiments of the utility model, the upper protective shell and the lower protective shell are connected through a buckle mechanism at the joint.

[0023] According to some embodiments of the present application, the water filter element further comprises an end cover, which is covered on the upper protective shell and covers the filter element interface part and the main interface part. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings in which:

[0025] Figure 1 Structure diagram of the water filter element according to the present application;

[0026] Figure 2 Structure diagram of the water filter element according to the present application;

[0027] Figure 3 Structure diagram of the water filter element according to the present application;

[0028] Figure 4 Structure diagram of the water filter element according to the present application;

[0029] Figure 5 Structure diagram of the water filter element according to the present application;

[0030] Figure 6 Structure diagram of the water filter element according to the present application; Figure 4 Structure diagram of the water filter element according to the present application;

[0031] Figure 7 Structure diagram of the water filter element according to the present application;

[0032] Figure 8 Structure diagram of the water filter element according to the present application;

[0033] LIST OF REFERENCE NUMERALS

[0034] Filter element cavity 101, upper shell 110, main interface part 111, positioning cross rod part 112, limiting step part 113, lower shell 120, air exchange channel 121, positioning hole 122;

[0035] Filter element body 200, filter element interface part 210, annular convex rib 211, annular groove 212, sealing gasket 220, sealing gasket support 240, circular ring part 241, abutting rod part 242, limiting protrusion 243, positioning column 250;

[0036] The air vent valve assembly 300, the waterproof air vent film 310, the supporting net 320, the one-way bead 330, the one-way bead holder 340, the closing structure 341, the supporting edge 342, the protective net 350, the supporting seat 360, the connecting channel 361, the supporting seat sealing ring 362, the one-way bead sealing ring 363, the bottom cover 370, and the bottom cover through hole 371.

[0037] The upper protective shell 410, the lower protective shell 420, and the end cover 430. DETAILED DESCRIPTION

[0038] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0039] In the description of the present application, it should be understood that, if the orientation description, such as the upper, lower, front, rear, left, right and the like, is described, the orientation or position relationship shown in the drawings is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.

[0040] In the description of the present application, if the first and the second are described, they are only used to distinguish technical features for the purpose, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0041] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and the skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0042] The following refers to Figures 1 to 8 A water filter cartridge for use on an aircraft according to an embodiment of the present application is described.

[0043] As Figures 1 to 6As shown, according to the water filter element for the aircraft, comprising: main shell and filter element main body 200, the main shell includes upper shell 110 and lower shell 120, the upper shell 110 and the lower shell 120 cover and form the filter element cavity 101, the upper shell 110 is provided with the main interface part 111 connected to the filter element cavity 101;The filter element main body 200 is arranged in the filter element cavity 101, and the filter element main body 200 is provided with the filter element interface part 210 inserted into the main interface part 111;The lower shell 120 is provided with the air valve assembly 300 capable of communicating the filter element cavity 101 with external air;The lower end of the lower shell 120 is provided with the air exchange channel 121 for installing the air valve assembly 300, and the air valve assembly 300 comprises a waterproof air-permeable membrane 310, a one-way bead 330 and a one-way bead support 340, the one-way bead support 340 is arranged in the air exchange channel 121, the one-way bead support 340 is provided with a taper structure 341 tapering from top to bottom and corresponding to the one-way bead 330, and the one-way bead 330 is movably arranged in the one-way bead support 340, and the waterproof air-permeable membrane 310 is arranged above the one-way bead support 340.

[0044] By configuring the one-way bead 330 and the taper structure 341 of the one-way bead support 340, a one-way valve structure is formed, the waterproof air-permeable membrane 310 enables the water filter element to inhale air from the outside when negative pressure occurs to meet the requirement of internal and external pressure balance, and the one-way valve structure can effectively block the water permeated through the waterproof air-permeable membrane 310 from flowing outwards, thereby improving the water leakage prevention performance of the water filter element.

[0045] Specifically, as shown in the drawings, Figure 6 When the water pressure in the water filter element is too high and causes the waterproof air-permeable membrane 310 to leak, water enters the air exchange channel 121 and pushes the one-way bead 330 downward, so that the one-way bead 330 abuts and cooperates with the taper structure 341 to seal the air exchange channel 121, thereby achieving the effect of preventing water leakage.

[0046] It should be noted that the one-way bead 330 and the taper structure 341 of the one-way bead support 340 constitute a one-way valve structure, thereby reducing the occurrence of water leakage to the outside, and also meeting the requirement of external airflow entering the filter element to eliminate the negative pressure state in the filter element, and the waterproof air-permeable membrane 310 can also block external water from entering the valve core to reduce water pollution, and when the pressure in the filter element is too high due to the initial use of the filter element, the gas can be directly discharged through the exhaust valve of the filter or the water faucet of the filter.

[0047] In some embodiments of the utility model, the upper shell 110 and the lower shell 120 are connected by ultrasonic rotary welding to make the upper shell 110 and the lower shell 120 have good sealing effect at the joint, and water leakage is not easy to occur, and the pressure bearing capacity is good.

[0048] It can be understood that in some embodiments of the utility model, the upper shell 110 and the lower shell 120 can also be assembled by bonding, threaded connection and the like, which will not be described in detail here.

[0049] As shown in Figure 5 , Figure 6 In some embodiments of the utility model, the air breather assembly 300 further comprises a support net 320, which is arranged between the waterproof air breather membrane 310 and the one-way bead support 340, and is located below and closely attached to the waterproof air breather membrane 310, supporting the waterproof air breather membrane 310 and reducing the deformation of the waterproof air breather membrane 310, thereby improving the reliability of the waterproof air breather membrane 310.

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

[0051] In some embodiments of the utility model, the support net 320 is a stainless steel net, which is made of food-grade stainless steel, has good supporting effect, and is safer and more sanitary to use.

[0052] As shown in Figure 5 , Figure 6 In some embodiments of the utility model, a protective net 350 is arranged below the one-way bead support 340, which can block foreign matter from entering the air exchange channel 121 and reduce the occurrence of water pollution, and the mesh of the protective net 350 can use the principle of capillary phenomenon to gather accidentally leaked water, making it convenient for the user to observe and replace or maintain in time.

[0053] Specifically, when the water filter element still leaks due to assembly error, machining error and other factors, the leaked water will gather at the mesh of the protective net 350 to form water droplets (capillary phenomenon), which are not easy to directly drip, making it convenient for the user to observe the sealing condition of the water filter element and maintain or replace it in time.

[0054] In some embodiments of the utility model, the protective net 350 is a stainless steel net, which is made of food-grade stainless steel, has good supporting effect, and is safer and more sanitary to use.

[0055] It can be understood that in some embodiments of the utility model, the protective net 350 can also be a hard plastic net, which will not be described in detail here.

[0056] As shown in Figure 5 , Figure 6As shown in some embodiments of the utility model, the lower part of the air exchange channel 121 is fixedly provided with a support seat 360, the middle part of the support seat 360 is provided with a connecting channel 361, the one-way bead support 340 is arranged above the support seat 360, the upper part of the support seat 360 is provided with a one-way bead sealing ring 363 corresponding to the one-way bead 330, and the protective net 350 is arranged at the lower part of the support seat 360. The one-way sealing effect of the one-way bead 330 is improved by arranging the one-way bead sealing ring 363.

[0057] Specifically, as shown in the drawings, Figure 6 When the water pressure in the water filter core is too high and causes the waterproof air-permeable membrane 310 to leak, water enters the air exchange channel 121 and pushes the one-way bead 330 to move downward, so that the one-way bead 330 abuts and cooperates with the closed structure 341, and the one-way bead 330 compresses the one-way bead sealing ring 363, thereby sealing the air exchange channel 121, and the effect of preventing water leakage is improved.

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

[0059] As shown in some embodiments of the utility model, Figure 5 The outer edge of the support seat 360 is provided with a convex rib, and the lower end of the lower shell 120 is provided with a concave position corresponding to the support seat 360, so as to stably install the support seat 360.

[0060] Specifically, the support seat 360 can be installed to the lower end of the lower shell 120 through tight fitting, buckling or auxiliary installation cover.

[0061] As shown in some embodiments of the utility model, Figure 5 , Figure 6 In some embodiments of the utility model, a support seat sealing ring 362 is arranged between the support seat 360 and the lower shell 120, so as to improve the sealing effect between the support seat 360 and the lower shell 120.

[0062] As shown in some embodiments of the utility model, Figure 5 , Figure 6 The lower end of the lower shell 120 is provided with a bottom cover 370, the bottom cover 370 is provided with a bottom cover through hole 371 corresponding to the air exchange channel 121, and the lower shell 120 is covered below the support seat 360 to limit the support seat 360 from being separated downward from the lower shell 120, so as to realize the fixation of the support seat 360 and other components of the air-permeable valve assembly 300.

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

[0064] In some embodiments of the present application, the bottom cover 370 can be installed to the lower end of the lower shell 120 by means of buckling, tight fitting, screwing, etc.

[0065] As shown in the drawings, Figure 5 In some embodiments of the present application, the upper end of the one-way bead support 340 is provided with a plurality of annular and spaced supporting edges 342, and the supporting net 320 is arranged above the supporting edges 342. By arranging the supporting edges 342, the supporting net 320 and the waterproof and breathable membrane 310 are reduced in shielding, so as to maintain good air permeability.

[0066] As shown in the drawings, Figure 4 In some embodiments of the present application, the filter core interface part 210 is provided with a sealing gasket 220 and a sealing gasket support 240. The outer edge of the sealing gasket 220 can abut against the inner wall of the upper shell 110. The sealing gasket support 240 abuts against the sealing gasket 220 and bends the outer edge of the sealing gasket 220 downward (not shown in the drawings). The sealing gasket 220 with the downwardly bent outer edge has a certain reverse sealing effect.

[0067] Specifically, the sealing gasket 220 is installed to the filter core interface part 210 by means of clamping or the like. The outer edge of the sealing gasket 220 abuts against the inner wall of the upper shell 110, forming a sealing structure. The sealing gasket support 240 bends the outer edge of the sealing gasket 220 downward, as shown in the drawings. The gap between the filter core body 200 and the inner wall of the filter core cavity 101 forms a water inlet cavity. The sealing gasket 220 can make water enter the water inlet cavity from top to bottom, and has a reverse sealing function, which can block the water in the water inlet cavity from flowing upward, achieving the reverse sealing effect. Figure 4

[0068] In some embodiments of the present application, the sealing gasket support 240 can be movably arranged on the filter core interface part 210 and / or the upper shell 110. The filter core interface part 210 and / or the upper shell 110 are provided with a limiting structure capable of limiting the movement range of the sealing gasket support 240 in the upward and downward directions. That is, the sealing gasket support 240 can move within a certain upward and downward distance, so that the sealing gasket 220 has a certain deformation performance, achieving the required reverse sealing effect.

[0069] ​Specifically, when the water in the water inlet cavity has a tendency to flow from bottom to top, the sealing gasket 220 is pressed against the inner wall of the filter core cavity 101 to achieve a reverse sealing effect, and at this time, the sealing gasket support 240 can be upwardly movable by a set distance, so that the sealing gasket 220 can have a larger area to tightly adhere to the inner wall of the filter core cavity 101, thereby achieving a better sealing effect.

[0070] As shown in Figure 4 , Figure 7 , Figure 8 illustrated, in some embodiments of the utility model, the sealing gasket support 240 includes a circular ring part 241 and a plurality of abutting rod parts 242 which are arranged at intervals in the circular ring part 241 and extend obliquely downward, the circular ring part 241 is sleeved on the filter core interface part 210 and can move up and down along the filter core interface part 210, the limiting structure includes a plurality of positioning cross rod parts 112 which are arranged at intervals on the inner wall of the main interface part 111 and extend toward the filter core interface part 210, the abutting rod part 242 can extend downward through the gap between adjacent positioning cross rod parts 112 to abut against the sealing gasket 220, and the positioning cross rod part 112 limits the downward movement of the circular ring part 241.

[0071] Specifically, the end of the positioning cross rod part 112 extends to a position shielding the circular ring part 241, thereby achieving the desired limiting effect.

[0072] As shown in Figure 4 illustrated, in some embodiments of the utility model, the filter core interface part 210 is provided with an annular groove 212 which can accommodate the end of the positioning cross rod part 112, so as to position the relative positions of the upper shell 110 and the filter core main body 200, thereby ensuring a good flow-through effect of the water inlet channel and achieving a good limiting effect on the circular ring part 241.

[0073] As shown in Figure 4 , Figure 7 , Figure 8 illustrated, in some embodiments of the utility model, the sealing gasket support 240 includes a circular ring part 241 and a plurality of abutting rod parts 242 which are arranged at intervals in the circular ring part 241 and extend obliquely downward, the circular ring part 241 is sleeved on the filter core interface part 210 and can move up and down along the filter core interface part 210, the abutting rod part 242 can extend downward to abut against the sealing gasket 220, and the limiting structure includes a limiting step part 113 arranged on the inner wall of the main interface part 111, the abutting rod part 242 is provided with a limiting protrusion 243 corresponding to the limiting step part 113, and the limiting protrusion 243 cooperates with the limiting step part 113 to limit the upward movement of the sealing gasket support 240.

[0074] In some embodiments of the utility model, the sealing gasket support 240 is made of a plastic material, so that the abutting rod part 242 of the long-shaped structure has a certain elastic bending performance, thereby facilitating the installation and disassembly of the sealing gasket support 240.

[0075] As Figure 4 , Figure 8 illustrated, in some embodiments of the utility model, the sealing gasket support 240 includes the circular ring part 241 and multiple interval setting in the circular ring part 241 and obliquely downward extending abutment rod part 242, the circular ring part 241 is set in the filter core interface part 210 and can move up and down along the filter core interface part 210, the abutment rod part 242 can extend downward to the sealing gasket 220 abuts, the limiting structure includes the annular convex rib 211 setting in the filter core interface part 210 with the circular ring part 241 corresponding, the outer diameter of annular convex rib 211 is greater than the inner diameter of circular ring part 241 to limit sealing gasket support 240 downward movement.

[0076] As Figure 4 , Figure 8 illustrated, in some embodiments of the utility model, the outer side of annular convex rib 211 and the inner side of circular ring part 241 are corresponding inclined plane structures, to better position the position of sealing gasket support 240, improve its support effect to sealing gasket 220.

[0077] As Figure 2 , Figure 4 illustrated, in some embodiments of the utility model, the lower end of the filter core main part 200 is provided with downward extending positioning column 250, the inner cavity of the lower shell 120 is provided with the positioning hole 122 that can be inserted with the positioning column 250, when filter core assembly, positioning column 250 inserts positioning hole 122, to position the position of filter core main part 200, so that filter core main part 200 can be centrally arranged in filter core cavity 101, to make the gap between the outer wall of filter core main part 200 and the inner wall of filter core cavity 101 keep substantially same, improve the filtering effect of filter core main part 200.

[0078] Specifically, the outer wall of filter core main part 200 and the inner wall of filter core cavity 101 form water inlet cavity, by the plug-in cooperation of positioning column 250 and positioning hole 122, so that filter core main part 200 can be centrally arranged in filter core cavity 101, thereby making water inlet cavity substantially same and uniformly distributed in the periphery of filter core main part 200, thereby improving the filtering effect of filter core main part 200.

[0079] As Figure 2 , Figure 4 illustrated, in some embodiments of the utility model, the end of positioning column 250 is ball head structure, to facilitate its insertion positioning hole 122.

[0080] It can be understood that, in some embodiments of the utility model, the end of positioning column 250 can also be provided as sharp structure, which is not described in detail here.

[0081] As Figure 4As shown in some embodiments of the utility model, the filter core interface part 210 is provided with an annular groove 212 capable of accommodating the end of the positioning crossbar part 112, so as to position the relative position of the upper shell 110 and the filter core body 200, position the position of the filter core body 200 from the upper part of the filter core body 200, so that the upper part of the filter core body 200 is approximately centrally arranged in the filter core cavity 101, and the positioning column 250 and the positioning hole 122 are matched and connected, so that the lower part of the filter core body 200 can be centrally arranged in the filter core cavity 101, and the filter core body 200 is centrally arranged in the filter core cavity 101 as a whole, so that the filter core body 200 achieves better filtering effect.

[0082] As Figures 1 to 4 As shown in some embodiments of the utility model, the water filter core further comprises a protective shell, the protective shell comprises an upper protective shell 410 and a lower protective shell 420, and an inner cavity capable of accommodating the main shell is formed between the upper protective shell 410 and the lower protective shell 420, so as to protect the filter core when the water filter core is not used, and facilitate transportation and storage.

[0083] In some embodiments of the utility model, the upper protective shell 410 and the lower protective shell 420 are detachably connected, so as to facilitate the taking and placing of the filter core.

[0084] In some embodiments of the utility model, the upper protective shell 410 and the lower protective shell 420 are connected through a buckle mechanism at the joint, so as to realize the detachable assembly of the upper protective shell 410 and the lower protective shell 420.

[0085] Specifically, the upper part of the lower protective shell 420 is annularly provided with a buckle part, and the inner wall of the lower end of the upper protective shell 410 is provided with an annular groove corresponding to the buckle part, and the buckle part can be buckled into the annular groove, so that the upper protective shell 410 and the lower protective shell 420 can be detachably assembled.

[0086] In some embodiments of the utility model, the upper protective shell 410 and the lower protective shell 420 are made of plastic material and have certain elastic deformation performance, so that the buckle mechanism can be buckled and disassembled.

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

[0088] As Figures 1 to 4 As shown in some embodiments of the utility model, the water filter core further comprises an end cover 430, the end cover 430 is covered on the upper protective shell 410 and covers the filter core interface part 210 and the main interface part 111, so as to protect the filter core interface part 210 and the main interface part 111.

[0089] In some embodiments of the utility model, the end cover 430 can be installed to the upper protective shell 410 through thread cooperation, rotary clamping and the like.

[0090] Of course, the utility model creation is not limited to the above-mentioned implementation, the skilled person in the art can also make equivalent modification or replacement without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the range defined by the claims of the application.

Claims

1. A water filter cartridge for use on an aircraft, characterized by, The utility model relates to a water filter element for aircraft, comprising: a main shell, the main shell includes upper shell (110) and lower shell (120), upper shell (110) and lower shell (120) cover and form filter element cavity (101), upper shell (110) is provided with main interface part (111) that communicates to filter element cavity (101); a 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 part (210) inserted into the main interface part (111); wherein, the lower shell (120) is provided with a breather valve assembly (300); the lower end of the lower shell (120) is provided with a ventilation channel (121) for installing the breather valve assembly (300), the breather valve assembly (300) comprises a waterproof breather membrane (310), a one-way bead (330) and a one-way bead support (340), the one-way bead support (340) is arranged in the ventilation channel (121), the one-way bead support (340) is provided with a tapered structure (341) tapered from top to bottom and corresponding to the one-way bead (330), the one-way bead (330) is movably arranged in the one-way bead support (340), and the waterproof breather membrane (310) is arranged above the one-way bead support (340).

2. The water filter element for aircraft according to claim 1, wherein the breather valve assembly (300) further comprises a support mesh (320) arranged between the waterproof breather membrane (310) and the one-way bead support (340).

3. The water filter element for aircraft according to claim 1, wherein a protective mesh (350) is arranged below the one-way bead support (340).

4. The water filter element for aircraft according to claim 3, wherein a support seat (360) is fixedly arranged at the lower part of the ventilation channel (121), the support seat (360) is provided with a connecting channel (361) at the middle part, the one-way bead support (340) is arranged above the support seat (360), the support seat (360) is provided with a one-way bead sealing ring (363) corresponding to the one-way bead (330) at the upper part, and the protective mesh (350) is arranged at the lower part of the support seat (360).

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

6. The water filter element for aircraft according to claim 1, wherein The filter core interface part (210) is provided with a sealing gasket (220) and a sealing gasket support (240), an outer edge of the sealing gasket (220) is capable of abutting against an inner wall of the upper shell (110), and the sealing gasket support (240) abuts against the sealing gasket (220) and bends the outer edge of the sealing gasket (220) downward.

7. The water filter core for an aircraft according to claim 6, characterized in that, The sealing gasket support (240) is movably arranged on the filter core interface part (210) and / or the upper shell (110), and the filter core interface part (210) and / or the upper shell (110) is provided with a limiting structure capable of limiting the movement range of the sealing gasket support (240) in the up-down direction.

8. The water filter core for an aircraft according to claim 7, characterized in that, The sealing gasket support (240) comprises a circular ring part (241) and a plurality of abutting rod parts (242) arranged at intervals on the circular ring part (241) and extending downward obliquely, the circular ring part (241) is sleeved on the filter core interface part (210) and is capable of moving up and down along the filter core interface part (210), and the limiting structure comprises a plurality of positioning cross rod parts (112) arranged at intervals on the inner wall of the main interface part (111) and extending toward the filter core interface part (210), the abutting rod parts (242) are capable of extending downward through the gaps between adjacent positioning cross rod parts (112) to abut against the sealing gasket (220), and the positioning cross rod parts (112) limit the downward movement of the circular ring part (241).

9. The water filter core for an aircraft according to claim 7, characterized in that, The sealing gasket support (240) comprises a circular ring part (241) and a plurality of abutting rod parts (242) arranged at intervals on the circular ring part (241) and extending downward obliquely, the circular ring part (241) is sleeved on the filter core interface part (210) and is capable of moving up and down along the filter core interface part (210), the abutting rod parts (242) are capable of extending downward to abut against the sealing gasket (220), and the limiting structure comprises a limiting step part (113) arranged on the inner wall of the main interface part (111), the abutting rod parts (242) are provided with limiting protrusions (243) corresponding to the limiting step part (113), and the limiting protrusions (243) cooperate with the limiting step part (113) to limit the upward movement of the sealing gasket support (240).

10. The water filter core for an aircraft according to claim 7, characterized in that, The sealing gasket support (240) comprises a circular ring portion (241) and a plurality of abutting rod portions (242) arranged at intervals in the circular ring portion (241) and extending 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 gasket (220), and the limiting structure comprises an annular convex rib (211) arranged in correspondence of the circular ring portion (241) and the filter element interface portion (210), the outer diameter of the annular convex rib (211) is greater than the inner diameter of the circular ring portion (241) to limit downward movement of the sealing gasket support (240).

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