Filter End Cap Assembly and Filter Element

Abstract

The present invention discloses a filter element end cap assembly and a filter element. Among them, the filter element end cap is in a hollow cylindrical shape, and the filter membrane element is arranged inside the filter element end cap; one end of the filter element end cap is provided with a top cover to seal one end of the filter element end cap; a central hole is provided in the middle of the top cover, the central tube is arranged in the central hole, and the filter membrane element is arranged around the central tube, so that the purified water generated after the raw water is filtered by the filter membrane element flows into the central tube through the water collecting holes; a plurality of drain holes are provided on the top cover, and the wastewater generated after being filtered by the filter membrane element is discharged through the drain holes. By adopting a top cover provided with drain holes, the present invention enables the wastewater generated after the raw water is filtered by the filter membrane element to be discharged outside the filter element through the drain holes. Since the raw water needs to pass through the filter membrane element completely before it can be discharged, the filtering efficiency of the raw water is high. With the extension of the water flow channel, the problem of water waste existing in the existing filter element structure is improved.

Description

Technical Field

[0001] The present invention relates to the field of water purification equipment, and particularly to a filter element end cap assembly and a filter element. Background Art

[0002] The concept of water conservation conforms to the current industry situation and is the development trend of technology. Currently, the recovery rate of large-flux reverse osmosis machines is mainly 50%. When producing 1 ton of pure water, 1 ton of wastewater will be generated, and the wastewater is not easily utilized, resulting in great waste.

[0003] In the existing filter element structure, the end cap part is not reasonably arranged, resulting in a large amount of wastewater generated after the raw water is filtered by the filter membrane, which is a great waste of water resources; due to the short flow channel, the water flow velocity is slow, causing the filter membrane to be easily blocked and polluted, shortening the service life of the filter membrane. Summary of the Invention

[0004] The main object of the present invention is to propose a filter element end cap assembly and a filter element, aiming to improve the problems of water waste and easy blockage and pollution of the filter membrane existing in the existing filter element.

[0005] To achieve the above object, a filter element end cap assembly proposed by the present invention is used to install a filter element assembly. The filter element assembly is provided with a filter membrane element and a central tube. The central tube is provided with water collection holes. The filter element end cap is in a hollow cylindrical shape, and the filter membrane element is arranged inside the filter element end cap;

[0006] One end of the filter element end cap is provided with a top cover to seal one end of the filter element end cap;

[0007] A central hole is provided in the middle of the top cover, and the central tube is arranged in the central hole. The filter membrane element is arranged around the central tube, so that the purified water generated after the raw water is filtered by the filter membrane element flows into the central tube through the water collection holes;

[0008] A plurality of drain holes are provided on the top cover, and the wastewater generated after being filtered by the filter membrane element is discharged through the drain holes.

[0009] Optionally, a boss is provided on the top cover;

[0010] The drain hole is a through hole provided on the boss.

[0011] Optionally, the boss is annularly wrapped around the edge of the central hole;

[0012] The drain holes are evenly distributed along the circumferential direction of the boss on the boss.

[0013] Optionally, rib strips are provided on the end face of the top cover facing the filter membrane element;

[0014] The ribs are arranged in a ring array on the top cover with the center of the central hole as the center, and an installation area for positioning the filter membrane element is formed between adjacent ribs;

[0015] The drainage hole corresponds to the installation location, and the filter membrane element is arranged in the installation location close to one end of the top cover, so that the waste water generated by filtering the filter membrane element can be discharged through the drainage hole.

[0016] Optionally, a plurality of groups of filter membrane elements are provided in the filter element end cover;

[0017] A plurality of groups of filter membrane elements are arranged in a ring shape with the center of the central hole as the center;

[0018] The filter element is bonded to the corresponding installation area at one end facing the top cover by colloid.

[0019] Optionally, one end of the central tube extends out of the top cover away from the filter membrane element, and a first water channel conversion member is provided on the central tube;

[0020] The first water channel conversion member is sleeved on the outer wall of the central tube, and the first water channel conversion member abuts against a side of the top cover away from the filter membrane element;

[0021] The first water channel conversion member is provided with a water hole corresponding to the position of the drainage hole.

[0022] Optionally, a positioning tube is provided inside the first water channel conversion component;

[0023] The positioning tube is coaxial with the central tube, and the positioning tube is plugged into the inner side of the central tube so that the clean water in the central tube can be discharged through the positioning tube.

[0024] Based on the above filter element end cover assembly, the present invention provides a filter element, comprising a filter housing, a socket, a lower end cover arranged inside the filter housing, and the above filter element end cover assembly;

[0025] The filter element end cover assembly is used to install the filter element assembly, the filter element assembly is provided with a filter membrane element and a central tube, the central tube is provided with a water collection hole, the filter element end cover is in a hollow cylindrical shape, and the filter membrane element is arranged inside the filter element end cover;

[0026] A top cover is provided at one end of the filter element end cover to close one end of the filter element end cover;

[0027] A central hole is provided in the middle of the top cover, the central tube is provided in the central hole, and the filter element is provided around the central tube, so that the clean water generated after the raw water is filtered by the filter element flows into the central tube through the water collection hole;

[0028] A plurality of drain holes are provided on the top cover, and the wastewater generated after filtration by the filter membrane element is discharged through the drain holes;

[0029] The socket is provided at one end of the filter housing;

[0030] The filter element end cover is provided at one end of the filter housing close to the socket;

[0031] The lower end cover and the filter element end cover are respectively positioned at both ends of the filter membrane element, so that the filter element end cover and the lower end cover respectively seal both ends of the filter membrane element.

[0032] Optionally, one end of the filter housing is an open end and the other end is a closed end, and the socket is provided at the open end of the filter housing;

[0033] The wastewater discharged from the drain holes and the purified water discharged from the central pipe are both discharged through the filter housing.

[0034] Optionally, a second water path conversion member is sleeved outside the filter element end cover;

[0035] A raw water flow path for inputting raw water is formed between the second water path conversion member and the filter housing;

[0036] One end of the second water path conversion member away from the filter element end cover is connected to the socket.

[0037] The technical solution of the present invention adopts a top cover provided with drain holes, so that the wastewater generated after the raw water is filtered by the filter membrane element is discharged outside the filter element through the drain holes, extending the water flow path of the wastewater, thereby avoiding the problem that the existing filter membrane element is easily blocked, and helping to extend the service life of the filter membrane element; since the raw water needs to pass through the filter membrane element completely to be filtered, the raw water filtration efficiency is high, and with the extension of the water flow path, the amount of generated wastewater is greatly reduced, improving the problem of a large amount of wasted water existing in the existing filter element structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0039] Figure 1 It is a schematic structural diagram of a filter element end cover in an embodiment of the present invention;

[0040] Figure 2 For Figure 1 Front view;

[0041] Figure 3 For Figure 1 Top view;

[0042] Figure 4 Schematic diagram of the internal structure of the filter element end cap assembly and the filter element in an embodiment of the present invention;

[0043] Figure 5 Exploded view of the structure of the filter element end cap assembly and the filter element in an embodiment of the present invention;

[0044] Figure 6 Schematic diagram of the structure of the filter element end cap assembly provided with ribs in an embodiment of the present invention;

[0045] Figure 7 For Figure 6 Bottom view;

[0046] Figure 8 Schematic diagram of the structure of the first waterway conversion part in an embodiment of the present invention;

[0047] Figure 9 Axial sectional view of the first waterway conversion part in an embodiment of the present invention;

[0048] Figure 10 Schematic diagram of the internal structure of the filter element end cap assembly provided with the first waterway conversion part in an embodiment of the present invention;

[0049] Figure 11 Exploded view of the filter element end cap assembly provided with the first waterway conversion part in an embodiment of the present invention;

[0050] Figure 12 Schematic diagram of the internal structure of the filter element in an embodiment of the present invention;

[0051] Figure 13 For Figure 12 Exploded view of the filter element;

[0052] Figure 14 Schematic diagram of the internal structure of the filter element provided with the second waterway conversion part in an embodiment of the present invention;

[0053] Figure 15 For Figure 14 Exploded view of the filter element.

[0054] Explanation of the reference numerals in the drawings:

[0055] Label Name Label Name 10 Filter housing 11 Adapter 12 Lower end cap 13 Second waterway conversion part 14 Original water flow channel 20 Central tube 21 Water collecting hole 22 Clean water flow channel 30 First waterway conversion part 31 Water passing hole 32 Reinforcing rib 33 Positioning tube 40 Filter membrane element 50 Filter element end cap 51 Waste water flow channel 52 Central hole 53 Boss 54 Drain hole 55 Top cover 56 Rib 57 Installation location

[0056] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0057] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0058] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0059] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0060] Please refer to Figure 1 、 Figure 2 and Figure 3 , Figure 1 which is a schematic structural diagram of the filter element end cap in an embodiment of the present invention, Figure 2 is Figure 1 the front view, Figure 3 is Figure 1Top view; The present invention provides a filter element end cap assembly for installing a filter element assembly. The filter element assembly is provided with a filter membrane element 40 and a central tube 20. The central tube 20 is provided with water collecting holes 21. The filter element end cap 50 is in a hollow cylindrical shape, and the filter membrane element 40 is arranged inside the filter element end cap 50. One end of the filter element end cap 50 is provided with a top cover 55 to seal one end of the filter element end cap 50. A central hole 52 is provided in the middle of the top cover 55, and the central tube 20 is arranged in the central hole 52. The filter membrane element 40 is arranged around the central tube 20, so that the purified water generated after the raw water is filtered by the filter membrane element 40 flows into the central tube 20 through the water collecting holes 21. A plurality of drain holes 54 are provided on the top cover 55, and the waste water generated after being filtered by the filter membrane element 40 is discharged through the drain holes 54. One end of the filter membrane element 40 is installed inside the cylindrical structure of the filter element end cap 50, so that the filter membrane element 40 can block the raw water water path. When the raw water is input into the filter element assembly, the raw water can only continuously flow through the filter membrane element 40.

[0061] Please refer to Figure 4 and Figure 5 , Figure 4 which is a schematic diagram of the internal structure of the cooperation between the filter element end cap assembly and the filter element in an embodiment of the present invention. Figure 5 which is an exploded view of the structure of the cooperation between the filter element end cap assembly and the filter element in an embodiment of the present invention. A raw water flow channel 14 is provided inside the filter element assembly, and the raw water enters the inside of the filter element through the raw water flow channel 14. One end of the filter membrane element 40 abuts against the top cover 55, and the filter membrane element 40 is wrapped around the central tube 20. The raw water enters the inside of the filter element assembly and is filtered along the direction of Figure 4 A as shown in Figure 4 . When the raw water is filtered by the filter membrane element 40, the purified water generated after filtration enters the inside of the central tube 20 through the water collecting holes 21 on the central tube 20. A purified water flow channel 22 is formed inside the central tube 20 and is output along the direction of

[0062] B as shown in Figure 4In the C direction, it is output through the drain hole 54 on the filter element end cap 50. During the filtration of raw water, the raw water must pass through the filter membrane element 40 for filtration, making the filtration more thorough; during the output of the generated wastewater, the wastewater must be transported through the filter membrane element 40 to the drain hole 54. The entire wastewater flow channel 51 is completely connected to the filter membrane element 40, increasing the length of the wastewater output flow channel, accelerating the water inflow velocity at the end face of the filter membrane element 40, thereby avoiding the problem of clogging of the filter membrane element 40 and helping to improve the problems of easy pollution and short service life of the existing filter membrane element 40.

[0063] The part of the filter element end cap 50 where the drain hole 54 is provided can be a sunken hole structure that sinks away from the filter membrane element 40 on the side of the top cover 55, so that the drain hole 54 is offset from the surface of the filter membrane element 40. When the wastewater flows out of the filter membrane element 40, the wastewater flows towards the drain hole 54. Through the design of the sunken hole structure, the width of the wastewater flow channel 51 is increased, and then the cross-sectional area of the wastewater flow channel 51 is increased. When the wastewater flow rate is constant, the larger the cross-sectional area of the wastewater flow channel 51, the faster the wastewater flow velocity, thereby making the wastewater flow velocity faster and helping to avoid the problem of clogging of the filter membrane element 40, effectively extending the service life of the filter membrane element 40.

[0064] Due to the increase in the length of the wastewater flow channel 51, the generated wastewater must completely pass through the filter membrane element 40 before it can be output, making the water filtration more thorough, and the amount of wastewater generated after filtration by the filter membrane element 40 can also be greatly reduced.

[0065] The filter membrane element 40 is wrapped around the outside of the central tube 20. The purified water generated after filtration by the filter membrane element 40 enters the central tube 20 through the water collection hole 21. Since the filter membrane element 40 can completely wrap around the outside of the central tube 20, the raw water can be input into the filter membrane element 40 from multiple directions outside the filter membrane element 40, and the filtration parts of the raw water are relatively dispersed, and it is not easy to have the problem of local clogging of the filter membrane element 40.

[0066] Since the end of the filter membrane element 40 is inserted into the filter element end cap 50 in a hollow cylindrical shape, the raw water is blocked from directly flowing through the filter membrane element 40 near the end of the top cover 55 by the hollow cylindrical filter membrane end cap. After the raw water is input into the filter element assembly, it cannot directly flow to the part of the filter element end cap 50. The raw water is filtered by the filter membrane element 40 at the end far from the filter element end cap 50, greatly increasing the length of the raw water flow channel 14, thereby avoiding the problem of clogging of the filter membrane element 40 caused by the relatively concentrated input part of the raw water in the existing filter membrane element 40.

[0067] The top cover 55 can define the installation position of the filter membrane element 40 to fix the end of the filter membrane element 40. At the same time, since the drain holes 54 are centrally arranged on the top cover 55, after the positions of the drain holes 54 are determined, the installation positions of the drain holes 54 are also relatively determined. Furthermore, other drainage structures of the filter element assembly can be conveniently arranged, and the filter element end cover 50 can be conveniently matched with the existing filter element assembly to improve the versatility of the filter element end cover assembly.

[0068] The drain holes 54 form the specific path of the waste water flow channel 51, so that the positions where the waste water flows out are relatively determined, and the waste water cannot flow out of the filter element assembly through other parts, avoiding the problem of relatively short flow channels caused by the waste water flowing out from the edge of the filter membrane element 40 in the existing filter element structure.

[0069] The inner diameter of the central hole 52 is equal to the outer diameter of the central tube 20, so that the central tube 20 can be fixed inside the central hole 52 to avoid the problem of relative misalignment of the central tube 20. Since the waste water impacts the filter element end cover 50 during the process of flowing outwards through the drain holes 54, fixing the central tube 20 through the central hole 52 can avoid unnecessary displacement between the filter element end cover 50 and the central tube 20 when the waste water continuously impacts the filter element end cover 50.

[0070] In the present invention, by adopting the filter element end cover 50 provided with drain holes 54, the waste water generated by the filter membrane element 40 can only flow out through the drain holes 54, so that the waste water flow channel through which the waste water flows is extended, and the filter membrane element 40 will not be blocked due to too short a flow channel. Furthermore, it helps to extend the service life of the filter membrane element 40.

[0071] The filter membrane element 40 can adopt an existing RO membrane (Reverse Osmosis membrane). The filter membrane element 40 can be wound around the outside of the central tube 20, and raw water is filtered through the filter membrane element 40; the filter membrane element 40 can also be set as multiple modules, and multiple modules are arrayed and combined outside the central tube 20, so that after the raw water is filtered through the filter membrane element 40, it enters the inside of the central tube 20 through the water collecting holes 21.

[0072] Please continue to refer to Figure 1 In an embodiment of the present invention, a boss 53 is provided on the top cover 55; the drain holes 54 are through holes provided on the boss 53. By providing the boss 53, the positioning of the drain holes 54 can be facilitated. When the filter element end cover 50 is matched with other filter element assemblies, rapid positioning can be facilitated to improve the versatility of the filter element end cover 50.

[0073] When installing the filter membrane element 40, in order to facilitate the positioning of the filter membrane element 40, a colloid is provided on the end face of the filter membrane element 40 facing the top cover 55, so that the colloid seals the contact surface between the filter membrane element 40 and the top cover 55. During the process of applying glue to the contact surface, the colloid is not coated on the boss 53 part. The caulking area is defined by the boss 53 to prevent the problem that the colloid enters the drain hole 54 during the caulking process and causes blockage. In order to facilitate matching with other structures of the filter element assembly and at the same time facilitate the positioning of the central tube 20, the design position of the boss 53 can be determined according to the specific shape of the filter element end cover 50.

[0074] In order to avoid the problem that the drain hole 54 is too concentrated and causes local blockage of the filter membrane element 40, optionally in the present invention, the boss 53 is annularly wound around the edge of the central hole 52; the drain holes 54 are evenly distributed on the boss 53 along the circumferential direction of the boss 53. The drain holes 54 are through holes evenly distributed on the boss 53, and both ends of the drain holes 54 communicate with the inside and outside of the top cover 55 respectively, so that the waste water flows from one side of the filter membrane element 40 to the outside of the top cover 55.

[0075] Since the boss 53 is provided at the edge of the central hole 52, when installing the filter element end cover 50 on the filter element assembly, it is convenient to quickly position the filter element end cover 50 and the external structure of the filter element assembly. Since the drain holes 54 are evenly distributed, a plurality of evenly distributed waste water flow channels 51 can be formed at the positions of the drain holes 54, thereby avoiding the problem that the filter element end cover 50 is easily damaged due to the over-concentration of the waste water output part.

[0076] Please refer to Figure 6 and Figure 7 , Figure 6 which is a schematic structural diagram of a filter element end cover assembly with ribs in an embodiment of the present invention, Figure 7 is Figure 6 a bottom view. In an embodiment of the present invention, ribs 56 are provided on the end face of the top cover 55 facing the filter membrane element 40; the ribs 56 are annularly arranged on the top cover 55 with the center of the central hole 52 as the center, and an installation area 57 for positioning the filter membrane element 40 is formed between adjacent ribs 56; the drain holes 54 correspond to the position of the installation area 57, and one end of the filter membrane element 40 close to the top cover 55 is arranged in the installation area 57, so that the waste water generated by filtering through the filter membrane element 40 is discharged through the drain holes 54. One end of the filter membrane element 40 is arranged in the installation area 57. At this time, the installation area 57 can play a role in positioning the filter membrane element 40.

[0077] When the contact surface between the filter element 40 and the top cover 55 is glued, the glue will not flow to the drainage hole 54 due to the restriction of the ribs 56 and the bosses 53, thereby avoiding the problem of clogging of the drainage hole 54.

[0078] In order to facilitate the installation of the filter membrane elements 40, in one embodiment of the present invention, a plurality of groups of the filter membrane elements 40 are arranged in the filter element end cap 50; the plurality of groups of the filter membrane elements 40 are arranged in a ring array with the center of the central hole 52 as the center; the filter membrane elements 40 are bonded to the corresponding installation positions 57 at one end facing the top cover 55 by colloid. The filter membrane elements 40 are assembled in an array outside the central tube 20, and during installation, the ends of the filter membrane elements 40 facing the top cover 55 are positioned through the installation positions 57.

[0079] The water collection hole 21 arranged on the central tube 20 corresponds to the position of the filter membrane element 40, so that the raw water can only be filtered through the filter membrane element 40, and the purified water after being filtered by the filter membrane element 40 can only enter the interior of the central tube 20 through the water collection hole 21 corresponding to the position of the filter membrane element 40.

[0080] By adopting a combination of multiple groups of the filter membrane elements 40 arrays, it is possible to facilitate the relative positioning of each filter membrane element 40 and the installation location 57, thereby facilitating the installation of the filter membrane elements 40; since the filter membrane elements 40 can be installed individually, when a single filter membrane element 40 needs to be replaced, the filter membrane element 40 can be replaced and installed, thereby reducing the maintenance cost of the filter membrane element 40.

[0081] See also Figure 8 and Figure 9 , Figure 8 This is a schematic diagram of the structure of the first water channel conversion component in one embodiment of the present invention. Figure 9 The axial cross-sectional diagram of the first water channel conversion member in one embodiment of the present invention is shown. When wastewater flows out through the wastewater flow channel 51, the wastewater will impact the filter element end cover 50. In order to prevent the filter element end cover 50 from being damaged by the impact of wastewater, in one embodiment of the present invention, one end of the central tube 20 extends out of the side of the top cover 55 away from the filter membrane element 40, and the central tube 20 is provided with a first water channel conversion member 30; the first water channel conversion member 30 is sleeved on the outer wall of the central tube 20, and the first water channel conversion member 30 is against the side of the top cover 55 away from the filter membrane element 40; the first water channel conversion member 30 is provided with a water hole 31 corresponding to the position of the drain hole 54. The first water channel conversion member 30 can be fixed on the outer shell of the filter element assembly, and at the same time, the first water channel conversion member 30 is connected to the central tube 20.

[0082] When the wastewater is output through the drain hole 54, under the action of the first waterway conversion member 30, the first waterway conversion member 30 abuts against the top cover 55 to prevent the top cover 55 from being deformed or damaged by the impact of the wastewater.

[0083] One end of the first waterway conversion member 30 close to the top cover 55 can be threadedly connected to the central tube 20. When the filter element end cover 50 is installed on the filter element assembly, the first waterway conversion member 30 can be directly installed on the filter element assembly, so as to facilitate the cooperation between the filter element end cover 50 and the filter element assembly, and facilitate the mutual cooperation between the filter element end cover 50 and different filter element assemblies, thereby improving the versatility of the filter element end cover 50.

[0084] The aperture of the water passing hole 31 can be relatively larger than that of the drain hole 54, or can be set as required, so that the wastewater output through the drain hole 54 can be output into the wastewater flow channel 51 through the water passing hole 31. The water passing hole 31 can be used as an extension of the wastewater flow channel 51 to realize the output of the wastewater.

[0085] Since the wastewater will impact the top cover 55, in order to improve the stability of the first waterway conversion member 30, in an embodiment of the present invention, a reinforcing rib 32 can be provided on the first waterway conversion member 30. The reinforcing rib 32 is used to support one surface of the first waterway conversion member 30 against the top cover 55 to improve the anti-deformation effect of the first waterway conversion member 30.

[0086] Please continue to refer to Figure 9 、 Figure 10 and Figure 11 , Figure 10 which is a schematic diagram of the internal structure of a filter element end cover assembly provided with a first waterway conversion member in an embodiment of the present invention, Figure 11 which is an exploded view of a filter element end cover assembly provided with a first waterway conversion member in an embodiment of the present invention. In an embodiment of the present invention, a positioning tube 33 is provided inside the first waterway conversion member 30; the positioning tube 33 is coaxial with the central tube 20, and the positioning tube 33 is inserted into the inner side of the central tube 20 so that the purified water in the central tube 20 is discharged through the positioning tube 33. After the first waterway conversion member 30 is installed on the central tube 20, the positioning tube 33 is inserted into the central tube 20. At this time, the positioning tube 33 and the central tube 20 match each other so that the purified water flow channel 22 can continue to extend in the positioning tube 33.

[0087] After the first waterway conversion part 30 and the filter element assembly are installed with each other, the positioning pipe 33 can achieve the mutual positioning of the first waterway conversion part 30 and the central pipe 20 from the inner side, which helps to improve the installation stability of the first waterway conversion part 30 and the central pipe 20. By stably installing the first waterway conversion part 30 on the central pipe 20, the first waterway conversion part 30 can produce a stable supporting effect on the top cover 55, which helps to avoid deformation of the top cover 55.

[0088] Based on the above filter element end cover assembly, the present invention proposes an embodiment of a filter element.

[0089] Please refer to Figure 12 and Figure 13 , Figure 12 Schematic diagram of the filter element structure in an embodiment of the present invention, Figure 13 is Figure 12 exploded view of the filter element. The filter element includes a filter shell 10, a socket 11, a lower end cover 12 arranged inside the filter shell 10, and the above-mentioned filter element end cover assembly; the socket 11 is arranged at one end of the filter shell 10; the filter element end cover 50 is arranged at one end of the filter shell 10 close to the socket 11; the lower end cover 12 and the filter element end cover 50 are respectively arranged opposite to both ends of the filter membrane element 40, so that the filter element end cover 50 and the lower end cover 12 respectively seal both ends of the filter membrane element 40.

[0090] The filter shell 10 and the socket 11 form an internal filtering space of the filter element, and the filter element end cover assembly is installed in the filtering space, so that the filter membrane element 40 is installed inside the filter shell 10.

[0091] Raw water enters the inside of the filter shell 10 through the raw water flow channel 14. The raw water is filtered by the filter membrane element 40, and the generated purified water enters the purified water flow channel 22 through the water collection holes 21 on the central pipe 20, and the generated waste water enters the waste water flow channel 51 through the drain holes 54.

[0092] Since the raw water can only be filtered by the filter membrane element 40, the generated waste water inside the filter element can only be transported to the outside of the filter element through the drain holes 54, so that the amount of waste water generated by the filter element is greatly reduced.

[0093] During the output process of the waste water, the waste water must pass through the filter membrane element 40 and be transported to the drain holes 54, so that the flow channel of the waste water in the filter membrane element 40 is relatively extended, thereby reducing the problem of the filter membrane element 40 being blocked by waste water. By improving the blockage problem of the filter membrane element 40, the water flow velocity inside the filter membrane element 40 can be increased, the pollution of the filter membrane element 40 can be avoided, and the service life of the filter membrane element 40 can be extended.

[0094] The filter housing 10 can adopt a cylindrical structure, and correspondingly, the filter membrane element 40 also forms a cylindrical structure. The output ends of the raw water flow channel 14 and the waste water flow channel 51 can be arranged on the adapter 11. The adapter 11 can adopt a structure with multiple existing output pipelines, which will not be elaborated here.

[0095] The input port of the raw water flow channel 14 can be arranged on the adapter 11 or at one end of the filter housing 10 away from the adapter 11.

[0096] In an embodiment of the present invention, one end of the filter housing 10 is an open end and the other end is a closed end. The adapter 11 is arranged at the open end of the filter housing 10; the waste water discharged from the drain hole 54 and the purified water discharged from the central pipe 20 are both discharged through the filter housing 10. One end of the filter housing 10 is closed, and the other end of the filter housing 10 is closed through the adapter 11, so that both the purified water and the waste water can only be output through one end of the adapter 11, which is convenient for the pipeline design of the filter element.

[0097] At this time, the filter element end cap 50 can be quickly positioned and matched with the adapter 11 and the filter housing 10. When installing the filter element end cap 50, the filter element end cap 50 can be connected to the adapter 11 so that the filter element end cap 50 can be applicable to different filter housings 10 and is convenient for being universal with other existing filter elements of different models.

[0098] Please refer to Figure 14 and Figure 15 , Figure 14 which is a schematic diagram of the internal structure of a filter element with a second water path conversion part in an embodiment of the present invention, Figure 15 is Figure 14 an exploded view of the filter element. In an embodiment of the present invention for the convenience of the pipeline design of the filter element, a second water path conversion part 13 is sleeved outside the filter element end cap 50; a raw water flow channel 14 for inputting raw water is formed between the second water path conversion part 13 and the filter housing 10; one end of the second water path conversion part 13 away from the filter element end cap 50 is connected to the adapter 11. At this time, the pipelines for raw water, purified water and waste water are all arranged on one side of the adapter 11.

[0099] Raw water is input through the adapter 11 and flows into the raw water flow channel 14 formed between the second water path conversion part 13 and the filter housing 10. Since a channel for continuous flow of raw water is formed between the filter membrane element 40 and the filter housing 10, as an extension of the raw water flow channel 14, due to the fact that the filter membrane element 40 will generate a certain resistance to the raw water, the raw water can flow along the raw water flow channel 14 towards the end away from the adapter 11. At this time, the raw water is along as Figure 12 , Figure 14The relative position of the input in the A direction with respect to the filter membrane element 40 is relatively dispersed, thereby increasing the inlet end face of the raw water, which helps to avoid the problem of clogging of the filter membrane element 40; moreover, the flow path of the raw water within the filter membrane element 40 is also relatively extended. While further avoiding the clogging of the filter membrane element 40, the purification efficiency of the filter membrane element 40 for the raw water is also relatively improved; since the raw water is gradually input into the filter membrane element 40, under the limitation of the filter element end cap 50, the raw water cannot directly impact the filter membrane element 40 near the drain hole 54 side, which helps to reduce the amount of wastewater generated by the filter membrane element 40 and improve the utilization rate of the raw water.

[0100] Since the wastewater can only flow along the C direction as shown in Figure 12 、 Figure 14 towards the position of the drain hole 54, the wastewater flow path 51 is also extended, thereby avoiding clogging at the part of the filter membrane element 40 near the drain hole 54; the purified water generated by filtration can only flow along the B direction as shown in Figure 10 、 Figure 11 towards the adapter 11 direction, which facilitates the design of the purified water output pipeline.

[0101] The lower end cap 12 is used to position one end of the filter membrane element 40 away from the filter element end cap 50, so as to keep the filter membrane element 40 in a stable state.

[0102] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the description and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A filter element end cap assembly for installing a filter element assembly. The filter element assembly is provided with a filter membrane element and a central tube. The central tube is provided with water collection holes, and is characterized in that, The filter element end cover is in the shape of a hollow cylinder, and the filter membrane element is arranged inside the filter element end cover; A top cover is provided at one end of the filter element end cover to close one end of the filter element end cover; A central hole is provided in the middle of the top cover, the central tube is provided in the central hole, and the filter element is provided around the central tube, so that the clean water generated after the raw water is filtered by the filter element flows into the central tube through the water collection hole; The top cover is provided with a plurality of drainage holes, through which the waste water generated by filtration of the filter membrane element is discharged; The top cover is provided with a boss; the drainage hole is a through hole provided on the boss; The boss is annularly wrapped around the edge of the central hole; The top cover is provided with ribs on one end surface facing the filter membrane element; The ribs are arranged in a ring array on the top cover with the center of the central hole as the center, and an installation area for positioning the filter membrane element is formed between adjacent ribs; The drainage hole corresponds to the installation location, and the filter element is arranged in the installation location close to one end of the top cover, so that the wastewater generated by filtering the filter element can be discharged through the drainage hole; A plurality of groups of filter membrane elements are arranged in the filter element end cover; A plurality of groups of filter membrane elements are arranged in a ring shape with the center of the central hole as the center; The end of the filter element facing the top cover is bonded to the corresponding installation area through colloid; the ribs and the boss restrict the colloid so that the colloid does not flow to the drainage hole.

2. The filter element end cap assembly according to claim 1, characterized in that, The drainage holes are evenly distributed on the boss along the circumference of the boss.

3. The filter element end cap assembly according to claim 1, wherein, One end of the central tube extends out of the top cover away from the filter element, and a first water channel conversion component is provided on the central tube; The first water channel conversion member is sleeved on the outer wall of the central tube, and the first water channel conversion member abuts against a side of the top cover away from the filter membrane element; The first water channel conversion member is provided with a water hole corresponding to the position of the drainage hole.

4. The filter element end cap assembly according to claim 3, wherein, A positioning tube is provided inside the first water channel conversion component; The positioning tube is coaxial with the central tube, and the positioning tube is plugged into the inner side of the central tube so that the clean water in the central tube can be discharged through the positioning tube.

5. A filter element, characterized in that, It comprises a filter housing, a socket, a lower end cover arranged inside the filter housing, and a filter element end cover assembly according to any one of claims 1 to 4; The socket is arranged at one end of the filter housing; The filter element end cover is arranged at one end of the filter housing close to the receiving seat; The lower end cover and the filter element end cover are respectively arranged at two ends of the filter membrane element so that the filter element end cover and the lower end cover respectively seal the two ends of the filter membrane element.

6. The filter element according to claim 5, wherein, One end of the filter housing is an open end, and the other end is a closed end, and the receiving seat is arranged at the open end of the filter housing; The waste water discharged from the drainage hole and the clean water discharged from the central pipe are both discharged through the filter housing.

7. The filter element according to claim 6, characterized in that, The outer sleeve of the filter element end cover is provided with a second water channel conversion component; A raw water flow channel for inputting raw water is formed between the second water channel conversion member and the filter housing; The second water channel conversion component is connected to the socket at one end away from the filter element end cover.

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