End cover assembly of filter element and filter element

Abstract

The utility model provides an end cover assembly of a filter element and the filter element, the end cover assembly of the filter element comprises a first end cover and a second end cover which are respectively arranged at the two axial ends of a membrane element of the filter element, and a first gluing area of the first end cover is communicated at the two axial ends of the membrane element; one end, far away from the first end cover, of the second gluing area of the second end cover in the axial direction of the membrane element is closed. In the glue sealing process, the second end cover is placed at the lower end of the membrane element, and due to the fact that the second end cover is of a traditional closed end cover structure, glue in the second gluing area cannot flow out. Due to the fact that the first gluing area on the first end cover is of the hollowed-out structure, glue sealing of the first end cover can be carried out without inverting the membrane element after glue in the second gluing area becomes dry, glue sealing operation can be directly carried out through the hollowed-out first gluing area, the total working time consumed by glue sealing of the two end covers is greatly shortened, and the output efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of filter elements, in particular to an end cover assembly of a filter element and a filter element. Background Art

[0002] At present, in the field of long-lasting filter elements, side flow technology is generally used to increase the life of the filter element. Due to its long water flow channel, fast flow rate, strong flushing ability and other characteristics, it can effectively extend the service life of the membrane element. When using side flow technology, it is necessary to seal the two ends of the membrane element. Generally, glue sealing is used, with the help of the end caps on the upper and lower ends, and the required areas inside are glued and assembled on the two ends of the membrane element to play the role of diversion and sealing.

[0003] In the prior art, when performing the gluing operation, the end cap of one end of the membrane element is usually sealed with glue first, and the end cap of the other end can be sealed with glue after the glue at the end dries and no longer flows. In order to ensure the glue sealing effect, the glue surface drying time is usually longer, which results in a longer time for the overall glue sealing, a slower process turnover, and a lower output efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defect that the glue sealing time of the end covers on both sides of the membrane element in the prior art is relatively long, and to provide an end cover assembly of a filter element and a filter element.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] An end cap assembly of a filter element, comprising a first end cap and a second end cap, wherein the first end cap and the second end cap are respectively mounted at two axial ends of a membrane element of the filter element, wherein the first end cap has a first glue application area at one axial end of the membrane element, the first glue application area passes through two axial ends of the membrane element, and the first glue application area is used to be filled with glue;

[0007] The second end cover has a second glue area at one end of the membrane element in the axial direction, the second glue area is closed at one end of the membrane element in the axial direction away from the first end cover, and the second glue area is used to be filled with glue.

[0008] In this solution, the operator can first perform the glue sealing operation on the second end cap. During the glue sealing process, the second end cap is placed at the lower end of the membrane element. Since the second end cap adopts a traditional closed end cap structure, the glue in the second glue application area will not flow out, ensuring the glue sealing effect. The first end cap is fixed to the upper end of the membrane element. Since the first glue application area on the first end cap is a hollow structure, there is no need to wait for the glue in the second glue application area to dry before inverting the membrane element to perform the glue sealing of the first end cap. The operator can directly perform the glue sealing operation through the hollow first glue application area, which greatly shortens the total working hours consumed by the glue sealing of the two end caps and improves the output efficiency.

[0009] Preferably, the first end cover comprises a first side plate, a supporting rib and a first central portion;

[0010] The first side plate is an annular structure, and the first side plate is used to be sleeved on the outer peripheral wall of the membrane element; the first center portion is located at one end of the first end cover in the axial direction of the membrane element, and there are multiple support ribs, and the multiple support ribs are arranged at intervals along the circumference of the membrane element. One end of the multiple support ribs is connected to the first side plate, and the other end of the multiple support ribs is connected to the first center portion, and the gap between two adjacent support ribs forms the first gluing area.

[0011] In this solution, the supporting ribs are used to connect the first side plate and the first central portion, so that the first end cover forms a whole, which facilitates the connection between the first end cover and the membrane element.

[0012] Preferably, the first central portion includes a central hole and a plurality of flow holes; the central hole is coaxial with the membrane element, and the flow holes are arranged on the outer peripheral side of the central hole.

[0013] In this solution, the center hole is used to connect the center tube to achieve the centering of the center tube, and the flow hole is used as a functional port such as a water inlet or a wastewater outlet of the membrane element to ensure the filtering effect of the membrane element.

[0014] Preferably, the first end cover also includes a first stopper, which is arranged between the support rib and the flow hole in the radial direction of the membrane element, and is an annular structure extending along the circumference of the membrane element. The first stopper extends along the axial direction of the membrane element toward the second end cover until it exceeds the support rib.

[0015] In this solution, the first stopper is used to prevent the glue in the first gluing area from flowing to the first central portion and causing the flow hole and / or the central hole to be blocked, thereby ensuring that water can flow through the membrane element normally.

[0016] Preferably, the second end cover comprises a second side plate and an axial end plate;

[0017] The second side plate is an annular structure, and the second side plate is used to be sleeved on the outer peripheral wall of the membrane element; the axial end plate is located at one end of the second end cover in the axial direction of the membrane element, and the axial end plate includes a gluing portion and a second center portion, and the gluing portion is located on the outer peripheral side of the second center portion, and the gluing portion forms the second gluing area on the side of the membrane element facing the first end cover in the axial direction.

[0018] In this solution, the second end cap adopts a traditional closed end cap structure to prevent the glue in the second gluing area from flowing out, thereby ensuring the glue sealing effect. The second central portion is used to cooperate with the central tube of the filter element to achieve the centering of the central tube.

[0019] Preferably, the sealing portion is provided with a plurality of annular protrusions on an end surface of the membrane element in the axial direction facing the first end cover, and the annular protrusions protrude in the direction of the first end cover along the axial direction of the membrane element.

[0020] In this solution, the above-mentioned setting is used to prevent the membrane element from being tightly attached to the gluing part. On the one hand, it ensures that there is more glue at the gluing part to bond with the membrane element, thereby improving the glue sealing effect. On the other hand, it may also reduce the possibility of interference between the central tube and the axial end plate of the second end cover.

[0021] Preferably, the second end cover also includes a second stopper, which is arranged between the glue-applying portion and the second center portion in the radial direction of the membrane element, and is an annular structure extending along the circumference of the membrane element. The second stopper protrudes from the axial end plate in the axial direction of the membrane element toward one end of the first end cover in a direction close to the first end cover.

[0022] In this solution, the second stopper is used to prevent the glue in the second gluing area from flowing to the second central portion, so as to ensure that there is enough area in the second central portion to cooperate with the central tube.

[0023] Preferably, the first end cover is provided with a first tape winding area at one end of the membrane element in the axial direction facing the second end cover;

[0024] And / or, the second end cover is provided with a second tape winding area at one end of the membrane element in the axial direction facing the first end cover.

[0025] In the present embodiment, the first tape winding area of ​​the first end cover and / or the second tape winding area of ​​the second end cover are used to wind the sealing tape, which on the one hand further realizes the fixation of the first end cover and / or the second end cover relative to the membrane element, and on the other hand, the sealing tape can prevent the glue from flowing to the outer peripheral surface of the membrane element.

[0026] Preferably, the end cap assembly of the filter element meets one or more of the following conditions:

[0027] a. The first end cover further comprises a first positioning ring, the first positioning ring is located at one end of the first end cover away from the second end cover in the axial direction of the membrane element, and the first positioning ring and the membrane element are coaxially arranged;

[0028] And / or, the second end cover further comprises a second positioning ring, the second positioning ring is located at an end of the second end cover away from the first end cover in the axial direction of the membrane element, and the second positioning ring and the membrane element are coaxially arranged;

[0029] b. The first end cover further includes a plurality of first support sheets, the first support sheets are fixed on the outer peripheral wall of the first side plate of the first end cover, and the first support sheets are used to cooperate with the filter housing of the filter element;

[0030] And / or, the second end cover further includes a plurality of second support plates, the second support plates are fixed on the outer peripheral wall of the second side plate of the second end cover, and the second support plates are used to cooperate with the filter housing of the filter element.

[0031] In this solution, the first positioning ring of the first end cap and / or the second positioning ring of the second end cap are used to cooperate with the filter housing of the filter element to achieve the centering of the membrane element. The first supporting piece of the first end cap and / or the second supporting piece of the second end cap are also used to cooperate with the filter housing of the filter element to achieve the centering of the membrane element.

[0032] A filter element comprises a membrane element and an end cover assembly of the filter element as described above, wherein the first end cover and the second end cover are respectively mounted at two axial ends of the membrane element.

[0033] In this solution, the membrane element is used to filter the water flow, and the end cover assembly of the filter element is used to fix the membrane element and guide the water flow.

[0034] The positive and progressive effect of the utility model is that the operator can first perform the glue sealing operation on the second end cap. During the glue sealing process, the second end cap is placed at the lower end of the membrane element. Since the second end cap adopts a traditional closed end cap structure, the glue in the second glue application area will not flow out, thereby ensuring the glue sealing effect. The first end cap is fixed to the upper end of the membrane element. Since the first glue application area on the first end cap is a hollow structure, it is not necessary to wait for the glue in the second glue application area to dry before inverting the membrane element to perform the glue sealing of the first end cap. The operator can directly perform the glue sealing operation through the hollow first glue application area, which greatly shortens the total working hours consumed by the glue sealing of the two end caps and improves the output efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the three-dimensional structure of a filter element according to an embodiment of the utility model.

[0036] Figure 2Schematic diagram of the internal structure of a filter element according to an embodiment of the present invention.

[0037] Figure 3 It is a schematic diagram of the three-dimensional structure of the membrane element and the end cover assembly of the filter element according to one embodiment of the utility model.

[0038] Figure 4 Another three-dimensional structural schematic diagram of the cooperation between the membrane element and the end cover assembly of the filter element according to one embodiment of the utility model.

[0039] Figure 5 This is a schematic diagram of the internal structure of the membrane element and the end cover assembly of the filter element according to one embodiment of the utility model.

[0040] Figure 6 The figure is a schematic diagram of the three-dimensional structure of the first end cover according to an embodiment of the utility model.

[0041] Figure 7 Another three-dimensional structural schematic diagram of the first end cover of an embodiment of the utility model.

[0042] Figure 8 The figure is a schematic diagram of the three-dimensional structure of the second end cover according to an embodiment of the utility model.

[0043] Fig. 9 Another three-dimensional structural schematic diagram of the second end cover of an embodiment of the utility model.

[0044] Description of reference numerals:

[0045] Filter housing 1

[0046] Axial end cover 11

[0047] Water inlet 12

[0048] Wastewater hole 13

[0049] Water hole 14

[0050] First groove 15

[0051] Second groove 16

[0052] Center tube 2

[0053] Water hole 21

[0054] Membrane element 3

[0055] End cap assembly of filter element 4

[0056] First end cap 5

[0057] First glue application area 51

[0058] First side plate 52

[0059] First tape winding area 521

[0060] Support rib 53

[0061] First center portion 54

[0062] Center hole 541

[0063] Flow hole 542

[0064] First stopper 55

[0065] First positioning ring 56

[0066] First supporting piece 57

[0067] Second end cap 6

[0068] Second glue application area 61

[0069] Second side plate 62

[0070] Second tape winding area 621

[0071] Axial end plate 63

[0072] Gluing Department 631

[0073] Second center portion 632

[0074] Ring protrusion 633

[0075] Second stopper 64

[0076] Second positioning ring 65

[0077] Second supporting piece 66 DETAILED DESCRIPTION

[0078] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0079] This embodiment discloses a filter element, specifically a side-flow filter element. Figure 1 and Figure 2 As shown, the filter element includes a filter housing 1, a central tube 2, a membrane element 3 and an end cover assembly 4 of the filter element.

[0080] like Figure 1 and Figure 2 As shown, the filter housing 1 serves as the outer shell of the filter element in this embodiment, which is specifically a cylindrical hollow structure. The central tube 2, the membrane element 3 and the end cover assembly 4 of the filter element are all arranged inside the filter housing 1. The filter housing 1 can protect the central tube 2, the membrane element 3 and the end cover assembly 4 of the filter element.

[0081] Among them, Figure 1 and Figure 2As shown, a plurality of through holes are provided on the axial end cover 11 of the filter housing 1, and the plurality of through holes connect the interior and exterior space of the filter housing 1. Water can flow into the interior of the filter housing 1 through one of the through holes to be filtered by the membrane element 3. After filtration, the water can flow out of the interior of the filter housing 1 through another through hole to provide filtered water to the user. Waste water generated after filtration can also be discharged through other through holes.

[0082] Specifically, Figure 1 As shown, the filter housing 1 in this embodiment includes three through holes, namely a water inlet hole 2112, a wastewater hole 2113 and a water production hole 2114. The water inlet hole 2112 is used to allow unfiltered water to enter the interior of the filter housing 1 for filtering operation, the wastewater hole 2113 is used to allow wastewater generated after the water flow is filtered to be discharged from the interior of the filter housing 1, and the water production hole 2114 is used to allow the water flow after filtration to flow out of the interior of the filter housing 1 to supply water to the user.

[0083] In other alternative embodiments, the number of through holes on the filter housing 1 can be other, and the function of each through hole can be designed according to actual needs.

[0084] like Figure 2 As shown, the central tube 2 and the filter housing 1 are coaxially arranged, and the membrane element 3 is sleeved on the outer periphery of the central tube 2. The central tube 2 is used to realize the installation and fixation of the membrane element 3 in the filter housing 1. A plurality of water holes 21 connecting the inner space of the central tube 2 and the outer space are arranged on the peripheral side wall of the central tube 2. The water holes 21 are used to guide the movement of water flow. The water flow inside the central tube 2 flows into the membrane element 3 through the water holes 21 on the central tube 2 to perform filtering operation.

[0085] like Figure 2-Figure 5 As shown, the membrane element 3 is made of filtering material and is used to filter impurities in the water flow. The end cap assembly 4 of the filter element is fixed to the axial end of the membrane element 3, and is used to cooperate with the central tube 2 to jointly realize the installation and fixation of the membrane element 3 in the filter housing 1. The membrane element 3 and the filter housing 1 are coaxially arranged, and the end cap assembly 4 of the filter element and the central tube 2 can help the membrane element 3 to be centered relative to the filter housing 1.

[0086] It should be noted that the specific material and manufacturing process of the membrane element 3 belong to the prior art in this field and will not be described in detail here.

[0087] like Figure 3-Figure 5 As shown, the end cover assembly 4 of the filter element includes a first end cover 5 and a second end cover 6 , and the first end cover 5 and the second end cover 6 are respectively installed at two axial ends of the membrane element 3 .

[0088] like Figure 6 and Figure 7As shown, the first end cover 5 has a first glue area 51 at one end in the axial direction of the membrane element 3 , and the first glue area 51 passes through both ends in the axial direction of the membrane element 3 , and the first glue area 51 is used to fill glue.

[0089] Specifically, Figure 6 and Figure 7 As shown, the first end cover 5 includes a first side plate 52 , a supporting rib 53 , a first central portion 54 , a first stopper 55 , a first positioning ring 56 and a first supporting sheet 57 .

[0090] like Figure 6 and Figure 7 As shown, the first side plate 52 is an annular structure, and the first side plate 52 is sleeved on the outer peripheral wall of the membrane element 3, and the first side plate 52 can limit the movement of the membrane element 3 in its radial direction. Further, the first side plate 52 is provided with a first tape winding area 521 at one end of the first side plate 52 facing the second end cover 6 in the axial direction of the membrane element 3, and the first tape winding area 521 is used to wind the sealing tape, and the sealing tape is wound around the outer peripheral surface of the membrane element 3 and the first tape winding area 521 at the same time. On the one hand, the sealing tape can realize the fixation of the first end cover 5 relative to the membrane element 3, and on the other hand, the sealing tape can prevent the glue in the first glue area 51 from flowing to the outer peripheral surface of the membrane element 3.

[0091] Furthermore, if Figure 6 As shown, the thickness of the first side plate 52 in the first tape winding area 521 is less than the thickness of other areas of the first side plate 52 to prevent the first tape winding area 521 from being too thick after being wound with the sealing tape and unable to be inserted into the interior of the filter housing 1.

[0092] In other alternative embodiments, the first side plate 52 may not be designed with the first tape winding area 521 , and the first end cover 5 is directly connected to the membrane element 3 by glue.

[0093] like Figure 5 and Figure 6 As shown, the first central portion 54 is located at one end of the first end cap 5 in the axial direction of the membrane element 3, and the first central portion 54 is used for water to flow into or out of the membrane element 3. Specifically, the first central portion 54 includes a central hole 541 and a plurality of flow holes 542, and the central hole 541 and the flow holes 542 are connected at both ends of the axial direction of the membrane element 3. The central hole 541 is coaxially arranged with the membrane element 3, and the central hole 541 is used to connect the central tube 2 to realize the centering of the central tube 2 relative to the first end cap 5. The flow holes 542 are arranged on the outer peripheral side of the central hole 541, and the flow holes 542 are used as functional ports such as the water inlet or wastewater outlet of the membrane element 3 to ensure the filtering effect of the membrane element 3.

[0094] The flow holes 542 in this embodiment are connected to the water inlet hole 2112 and the wastewater hole 2113 on the filter housing 1 to achieve the flow of water. The number of the flow holes 542 in this embodiment is multiple. In other alternative embodiments, the number and size of the flow holes 542 can be designed according to actual needs to avoid affecting the side flow effect.

[0095] like Figure 6 and Figure 7 As shown, there are multiple support ribs 53, which are arranged at intervals along the circumference of the membrane element 3, one end of the multiple support ribs 53 is connected to the first side plate 52, and the other end of the multiple support ribs 53 is connected to the first central portion 54, so that the first end cover 5 forms a whole, which facilitates the connection between the first end cover 5 and the membrane element 3. The gap between two adjacent support ribs 53 forms a first glue application area 51.

[0096] Furthermore, if Figure 6 and Figure 7 As shown, the first stopper 55 is provided between the support rib 53 and the flow hole 542 in the radial direction of the membrane element 3. The first stopper 55 is an annular structure extending along the circumference of the membrane element 3. The first stopper 55 extends along the axial direction of the membrane element 3 toward the second end cover 6 to exceed the support rib 53. The first stopper 55 is used to prevent the glue in the first glue application area 51 from flowing to the first central portion 54 and causing the flow hole 542 and / or the central hole 541 to be blocked, so as to ensure that the water flow can pass through the membrane element 3 normally.

[0097] In addition, the first stopper 55 extends along the axial direction of the membrane element 3 toward the second end cover 6 to beyond the support rib 53, and can also make the gaps between two adjacent support ribs 53 interconnected, so that the first gluing area 51 forms a flow area, and the glue in the first gluing area 51 can flow to each other, so that the glue can flow level.

[0098] like Figure 6 As shown, the first positioning ring 56 is located at one end of the first end cap 5 in the axial direction of the membrane element 3 away from the second end cap 6. The first positioning ring 56 and the membrane element 3 are coaxially arranged. The first end cap 5 is used to cooperate with the filter housing 1 to achieve the centering of the first end cap 5 relative to the filter housing 1, thereby achieving the centering of the central tube 2 and the membrane element 3 relative to the filter housing 1. Specifically, as Figure 2 As shown, in this embodiment, a first groove 15 is provided inside the filter housing 1, and a first positioning ring 56 is accommodated in the first groove 15, and an outer peripheral wall of the first positioning ring 56 abuts against an inner peripheral wall of the first groove 15 to achieve the cooperation between the first positioning ring 56 and the filter housing 1.

[0099] In other alternative embodiments, the first end cover 5 may not be provided with the first positioning ring 56 , and the first end cover 5 may be aligned with the filter housing 1 in other ways.

[0100] like Figure 6 As shown, the first support sheet 57 is fixed on the outer peripheral wall of the first side plate 52, and the first support sheet 57 is used to cooperate with the filter housing 1 to realize the centering of the first end cover 5 relative to the filter housing 1, and then realize the centering of the central tube 2 and the membrane element 3 relative to the filter housing 1. Specifically, the interior of the filter housing 1 can be designed with a matching structure (such as a groove, etc.) that matches with the first support sheet 57, so as to realize the matching between the first support sheet 57 and the filter housing 1.

[0101] In this embodiment, there are multiple first support sheets 57. In other alternative implementations, the number of first support sheets 57 can be designed according to actual needs.

[0102] In other alternative embodiments, the first end cover 5 may not be provided with the first support sheet 57 , and the first end cover 5 may be aligned with the filter housing 1 in other ways.

[0103] like Figure 8 and Fig. 9 As shown, the second end cover 6 has a second glue area 61 at one end in the axial direction of the membrane element 3. The second glue area 61 is closed at one end of the membrane element 3 in the axial direction away from the first end cover 5. The second glue area 61 is used to fill glue.

[0104] Specifically, Figure 8 and Fig. 9 As shown, the second end cover 6 includes a second side plate 62 , an axial end plate 63 , a second stopper 64 , a second positioning ring 65 and a second support sheet 66 .

[0105] like Figure 8 and Fig. 9 As shown, the second side plate 62 is an annular structure, and the second side plate 62 is used to be sleeved on the outer peripheral wall of the membrane element 3, and the second side plate 62 can limit the movement of the membrane element 3 in its radial direction. Further, the second side plate 62 is provided with a second tape winding area 621 at one end of the membrane element 3 in the axial direction toward the first end cover 5, and the second tape winding area 621 is used to wind the sealing tape, and the sealing tape is wound around the outer peripheral surface of the membrane element 3 and the second tape winding area 621 at the same time. On the one hand, the sealing tape can realize the fixation of the second end cover 6 relative to the membrane element 3, and on the other hand, the sealing tape can prevent the glue in the second glue area 61 from flowing to the outer peripheral surface of the membrane element 3.

[0106] Furthermore, if Fig. 9 As shown, the thickness of the second side plate 62 in the second tape winding area 621 is less than the thickness of other areas of the second side plate 62 to prevent the second tape winding area 621 from being too thick after being wound with the sealing tape and unable to be inserted into the interior of the filter housing 1.

[0107] In other alternative embodiments, the second side plate 62 may not be designed with the second tape winding area 621 , and the second end cover 6 is directly connected to the membrane element 3 by glue.

[0108] like Figure 5 and Fig. 9 As shown, the axial end plate 63 is located at one end of the second end cover 6 in the axial direction of the membrane element 3 , and the axial end plate 63 includes a glue portion 631 and a second center portion 632 , the glue portion 631 is used to be filled with glue, and the second center portion 632 is used to avoid the center tube 2 .

[0109] Specifically, Figure 5 and Fig. 9 As shown, the second central portion 632 is coaxially arranged with the central tube 2 and cooperates with the central tube 2 to realize the centering of the central tube 2 relative to the second end cover 6. The second central portion 632 in this embodiment is a closed structure, that is, the water flow does not pass through the second central portion 632 through the second end cover 6. In other alternative embodiments, the second central portion 632 may also be designed with a through hole to allow the water flow to flow into or out of the interior of the filter housing 1.

[0110] like Fig. 9 As shown, the glue portion 631 is located on the outer peripheral side of the second central portion 632, and the glue portion 631 forms a second glue area 61 on the side of the membrane element 3 facing the first end cover 5 in the axial direction. The second end cover 6 adopts a traditional closed end cover structure so that the glue in the second glue area 61 will not flow out, thereby ensuring the glue sealing effect.

[0111] Furthermore, if Fig. 9 As shown, the glue-applying part 631 is provided with a plurality of annular protrusions 633 on one end surface of the membrane element 3 in the axial direction facing the first end cover 5, and the annular protrusions 633 protrude in the direction of the first end cover 5 along the axial direction of the membrane element 3. The annular protrusions 633 are used to prevent the membrane element 3 from being closely attached to the glue-applying part 631, which, on the one hand, ensures that more glue can be bonded to the membrane element 3 at the glue-applying part 631 to improve the glue sealing effect, and, on the other hand, may also reduce the possibility of interference between the central tube 2 and the axial end plate 63 of the second end cover 6.

[0112] like Fig. 9 As shown, the second stopper 64 is disposed between the glue application portion 631 and the second center portion 632 in the radial direction of the membrane element 3. The second stopper 64 is an annular structure extending along the circumference of the membrane element 3. The second stopper 64 protrudes from the axial end plate 63 in the axial direction of the membrane element 3 toward one end of the first end cover 5 in the direction close to the first end cover 5. The second stopper 64 is used to prevent the glue in the second glue application area 61 from flowing to the second center portion 632, so as to ensure that the second center portion 632 has enough area to cooperate with the center tube 2. In addition, as shown in FIG. Figure 5As shown, the inner circumferential wall of the second stopper 64 can abut against the outer circumferential wall of the central tube 2 to achieve a matching connection between the second central portion 632 and the central tube 2 , thereby achieving a rapid positioning of the central tube 2 relative to the second end cover 6 .

[0113] like Figure 8 As shown, the second positioning ring 65 is located at one end of the second end cover 6 in the axial direction of the membrane element 3 away from the first end cover 5, the second positioning ring 65 and the membrane element 3 are coaxially arranged, and the second end cover 6 is used to cooperate with the filter housing 1 to achieve the centering of the second end cover 6 relative to the filter housing 1, thereby achieving the centering of the central tube 2 and the membrane element 3 relative to the filter housing 1. Specifically, as Figure 2 As shown, in this embodiment, a second groove 16 is provided inside the filter housing 1, and a second positioning ring 65 is accommodated in the second groove 16, and an outer peripheral wall of the second positioning ring 65 abuts against an inner peripheral wall of the second groove 16 to achieve cooperation between the second positioning ring 65 and the filter housing 1.

[0114] In other alternative embodiments, the second end cover 6 may not be designed with the second positioning ring 65 , and the second end cover 6 may be aligned with the filter housing 1 in other ways.

[0115] like Figure 8 As shown, the second support sheet 66 is fixed on the outer peripheral wall of the second side plate 62 of the second end cover 6, and the second support sheet 66 is used to cooperate with the filter housing 1 of the filter element to realize the centering of the second end cover 6 relative to the filter housing 1, and then realize the centering of the central tube 2 and the membrane element 3 relative to the filter housing 1. Specifically, the interior of the filter housing 1 can be designed with a matching structure (such as a groove, etc.) that matches with the second support sheet 66, so as to realize the matching between the second support sheet 66 and the filter housing 1.

[0116] In this embodiment, there are multiple second support sheets 66. In other alternative implementations, the number of second support sheets 66 can be designed according to actual needs.

[0117] In other alternative embodiments, the second end cover 6 may not be provided with the second support sheet 66 , and the second end cover 6 may be aligned with the filter housing 1 in other ways.

[0118] The following briefly describes the process of gluing the first end cap 5 and the second end cap 6 based on the specific structure of the above-mentioned middle filter element:

[0119] Place the end of the second end cap 6 with the second gluing area 61 facing upwards, and fill the second gluing area 61 of the second end cap 6 with glue, and wait for the glue to stand and level in the second gluing area 61. Fix the first end cap 5 to the axial end of the upper side of the membrane element 3 (specifically, the sealing tape can be wrapped around the membrane element 3 and the first tape winding area 521 of the first end cap 5 to achieve the fixation of the two), and then insert the axial end of the lower side of the membrane element 3 into the second end cap 6. Fill the first gluing area 51 of the first end cap 5 with glue, and wait for the glue to stand and level in the first gluing area 51. After that, you can wait for the glue on both sides of the membrane element 3 to be completely cured. During the waiting process, you can timely fill the first gluing area 51 with glue to improve the glue sealing effect of the first end cap 5.

[0120] In this embodiment, the operator first performs the glue sealing operation on the second end cap 6. During the glue sealing process, the second end cap 6 is placed at the lower end of the membrane element 3. Since the second end cap 6 adopts a traditional closed end cap structure, the glue in the second glue area 61 will not flow out, thereby ensuring the glue sealing effect. The first end cap 5 is fixed to the upper end of the membrane element 3. Since the first glue area 51 on the first end cap 5 is a hollow structure, it is not necessary to wait for the glue in the second glue area 61 to dry before inverting the membrane element 3 to perform the glue sealing of the first end cap 5. The operator can directly perform the glue sealing operation through the hollow first glue area 51, which greatly shortens the total working hours consumed by the glue sealing of the two end caps and improves the output efficiency. The hollow structure also makes it convenient for the operator to observe the glue sealing situation at any time and to make glue filling convenient.

[0121] In addition, in this embodiment, the first glue application area 51 is glued after the first end cap 5 is installed, which can reduce glue overflow. Moreover, the glue application operation is simpler and more efficient than the operation of waiting for leveling after applying the end cap and then installing the membrane element 3.

[0122] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings of the devices or components, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0123] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. An end cap assembly of a filter element, comprising a first end cap and a second end cap, wherein the first end cap and the second end cap are respectively mounted at two axial ends of a membrane element of the filter element, characterized in that: The first end cover has a first glue area at one end of the membrane element in the axial direction, the first glue area passes through two ends of the membrane element in the axial direction, and the first glue area is used to fill glue; The second end cover has a second glue area at one end of the membrane element in the axial direction, the second glue area is closed at one end of the membrane element in the axial direction away from the first end cover, and the second glue area is used to be filled with glue.

2. The end cap assembly of the filter element according to claim 1, characterized in that: The first end cover includes a first side plate, a support rib and a first central portion; The first side plate is an annular structure, and the first side plate is used to be sleeved on the outer peripheral wall of the membrane element; the first center portion is located at one end of the first end cover in the axial direction of the membrane element, and there are multiple support ribs, and the multiple support ribs are arranged at intervals along the circumference of the membrane element. One end of the multiple support ribs is connected to the first side plate, and the other end of the multiple support ribs is connected to the first center portion, and the gap between two adjacent support ribs forms the first gluing area.

3. The end cap assembly of the filter element according to claim 2, characterized in that: The first central portion includes a central hole and a plurality of flow holes; the central hole is coaxial with the membrane element, and the flow holes are arranged on the outer peripheral side of the central hole.

4. The end cap assembly of the filter element according to claim 3, characterized in that: The first end cover also includes a first stopper, which is arranged between the support rib and the flow hole in the radial direction of the membrane element, and is an annular structure extending along the circumference of the membrane element. The first stopper extends along the axial direction of the membrane element toward the second end cover until it exceeds the support rib.

5. The end cap assembly of the filter element according to claim 1, characterized in that: The second end cover includes a second side plate and an axial end plate; The second side plate is an annular structure, and the second side plate is used to be sleeved on the outer peripheral wall of the membrane element; the axial end plate is located at one end of the second end cover in the axial direction of the membrane element, and the axial end plate includes a gluing portion and a second center portion, and the gluing portion is located on the outer peripheral side of the second center portion, and the gluing portion forms the second gluing area on the side of the membrane element facing the first end cover in the axial direction.

6. The end cap assembly of the filter element according to claim 5, characterized in that: The glue applying part is provided with a plurality of annular protrusions on an end surface of the membrane element facing the first end cover in the axial direction of the membrane element, and the annular protrusions protrude in the direction of the first end cover along the axial direction of the membrane element.

7. The end cap assembly of the filter element according to claim 5, characterized in that: The second end cover also includes a second stopper, which is arranged between the glue-applying portion and the second center portion in the radial direction of the membrane element, and is an annular structure extending along the circumference of the membrane element. The second stopper protrudes from the axial end plate in the axial direction of the membrane element toward one end of the first end cover in a direction close to the first end cover.

8. The end cap assembly of the filter element according to any one of claims 1 to 7, characterized in that: The first end cover is provided with a first tape winding area at one end of the membrane element in the axial direction facing the second end cover; And / or, the second end cover is provided with a second tape winding area at one end of the membrane element in the axial direction facing the first end cover.

9. The end cap assembly of the filter element according to any one of claims 1 to 7, characterized in that: The end cap assembly of the filter element meets one or more of the following conditions: a. The first end cover further comprises a first positioning ring, the first positioning ring is located at one end of the first end cover away from the second end cover in the axial direction of the membrane element, and the first positioning ring and the membrane element are coaxially arranged; And / or, the second end cover further comprises a second positioning ring, the second positioning ring is located at an end of the second end cover away from the first end cover in the axial direction of the membrane element, and the second positioning ring and the membrane element are coaxially arranged; b. The first end cover further includes a plurality of first support sheets, the first support sheets are fixed on the outer peripheral wall of the first side plate of the first end cover, and the first support sheets are used to cooperate with the filter housing of the filter element; And / or, the second end cover further includes a plurality of second support plates, the second support plates are fixed on the outer peripheral wall of the second side plate of the second end cover, and the second support plates are used to cooperate with the filter housing of the filter element.

10. A filter element, characterized in that: An end cover assembly comprising a membrane element and a filter element as claimed in any one of claims 1 to 9, wherein the first end cover and the second end cover are respectively mounted at two axial ends of the membrane element.

Images