Novel folding membrane filter element end seal packaging structure

Abstract

The utility model relates to the technical field of folding membrane filter elements, in particular to a novel folding membrane filter element end seal packaging structure which comprises a shell, a center rod, filter membranes and end pieces, the filter membranes are sleeved on the periphery of the center rod and are sequentially folded along the circumferential direction of the center rod, the shell is sleeved on the periphery of the filter membranes, and the end pieces are arranged on the center rod. An opening in one end of the shell is connected with the inner end face of the end piece in the molten state to form a whole in a cooling and curing mode, and an opening in one end of the center rod is connected with the inner end face of the end piece in the molten state to form a whole in a cooling and curing mode. According to the utility model, the inner end face of the single-end high-temperature hot melting end piece is adopted to avoid the damage of high temperature to the filter membrane, the yield of the filter element is improved, the integrity of the filter element is high, and meanwhile, the first connecting bulge and the second connecting bulge which are in interference fit are adopted, so that the connection stability can be further improved, the connection is firm, the effect is good, and the service life is long. The service life of the filter element is prolonged, the packaging step is simplified, and the production cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of folded membrane filter elements, in particular to a novel folded membrane filter element end seal packaging structure. Background Art

[0002] The pleated membrane filter element achieves filtration by stacking filter membranes. It has a compact structure and a large membrane filtration area. It is often used in primary or combined filtration scenarios. A matching filter membrane is used according to actual conditions. It has a wide chemical compatibility, a large flow rate, a low pressure difference, and a relative filtration accuracy and a retention rate of more than 90%. Therefore, it can be widely used in various fields. The existing production method generally uses hot melt welding to package the filter element, which is low in cost and does not release pollutants. However, the production cost of the existing packaging structure is high and double-end high-temperature hot melting is required. However, high temperature can easily cause the performance of the folded membrane to change, resulting in some membrane pores in the hot melt area being destroyed, reducing the performance of the folded membrane filter element, resulting in poor integrity test results of the existing folded membrane filter element. At the same time, the existing packaging structure has poor structural strength and cannot be used in high-pressure filtration scenarios and has a short service life. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the existing packaging structure easily causes damage to the folding film, and has poor structural performance and a short service life.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a novel folded membrane filter element end sealing packaging structure, comprising an outer shell, a center rod, a filter membrane and an end piece, the filter membrane is sleeved on the periphery of the center rod, the filter membrane is folded in sequence along the circumferential direction of the center rod, the outer shell is sleeved on the periphery of the filter membrane, a plurality of feed holes are opened on the center rod, a plurality of discharge holes are opened on the outer shell, the end piece is arranged at one end opening of the outer shell and one end opening of the center rod, the one end opening of the outer shell is connected into one by a method of being closely contacted with the inner end surface of the end piece in a molten state and then cooled and solidified One end of the filter membrane is connected as a whole by being in close contact with the inner end surface of the end piece in a molten state and then cooled and solidified. One end opening of the center rod is connected as a whole by being in close contact with the inner end surface of the end piece in a molten state and then cooled and solidified. A first annular connecting protrusion is convexly provided at the edge of the inner end surface of the end piece, and a second annular connecting protrusion is convexly provided at the center of the inner end surface of the end piece. The inner surface of the first connecting protrusion is interference fit with the outer surface of the outer shell and is hot-melt connected to form a whole. The outer surface of the second connecting protrusion is interference fit with the inner surface of the center rod and is hot-melt connected to form a whole.

[0005] When the utility model is working, the inner end face of the single-end high-temperature hot-melt end piece is used to avoid damage to the filter membrane by high temperature, thereby improving the yield rate of the filter element and the integrity of the filter element. At the same time, the first connecting protrusion and the second connecting protrusion with interference fit are used to further improve the stability of the connection, the connection is firm and the effect is good, the service life of the filter element is increased, the packaging steps are simplified, and the production cost is low.

[0006] Preferably, a plurality of first annular connecting grooves are formed at a position where the outer surface of the shell contacts the first connecting protrusion, and a plurality of second annular connecting grooves are formed at a position where the inner surface of the center rod contacts the second connecting protrusion.

[0007] Preferably, a reinforcing protrusion is provided on the inner surface of the center rod near the opening at one end thereof, and the inner ends of the reinforcing protrusion are extended and arranged near the opening at one end of the center rod, and a circular wedge-shaped space is formed between the outer surface of the reinforcing protrusion and the inner surface of the center rod, and the second connecting protrusion is installed in the wedge-shaped space.

[0008] When the utility model is working, the second connection protrusion is fixed in the wedge-shaped space by hot-melting and then cooling, and the connection stability is further improved, the impact resistance is strong, and the sealing is tight.

[0009] Preferably, the outer end surface of the end piece is provided with a positioning protrusion which cooperates with a corresponding positioning device.

[0010] Preferably, it also includes a reinforcement hoop, one end of which is sleeved on the outer end surface of the end piece, and the other end of which is sleeved on the outer surface of one end of the outer shell, and one end of the reinforcement hoop is provided with a first reinforcement flange protruding inwardly, and the inner end surface of the first reinforcement flange abuts against the edge position of the outer end surface of the end piece.

[0011] Preferably, an annular connecting groove is formed on the outer surface of one end of the shell, and a second reinforcing flange is formed inwardly at the other end of the reinforcing hoop, and the second reinforcing flange is limitedly installed in the connecting groove.

[0012] When the utility model is working, the reinforcement hoop can further improve the structural strength of the filter element, and at the same time can protect the connection parts, thereby increasing the service life of the filter element.

[0013] The beneficial technical effects of the utility model include:

[0014] 1. The utility model adopts a single-end high-temperature hot-melt end piece to the inner end surface to avoid high temperature damage to the filter membrane, improve the yield rate of the filter element, and the integrity of the filter element is high. At the same time, the first connecting protrusion and the second connecting protrusion with interference fit are adopted to further improve the stability of the connection, the connection is firm, the effect is good, the service life of the filter element is increased, the packaging steps are simplified, and the production cost is low.

[0015] 2. The utility model further improves the stability of the connection by hot-melting the second connection protrusion and then cooling and fixing it in the wedge-shaped space, thereby achieving strong impact resistance and tight sealing.

[0016] 3. The utility model adopts a reinforcing hoop to further improve the structural strength of the filter element, and at the same time can protect the connecting parts and increase the service life of the filter element.

[0017] Other features and advantages of the present invention will be disclosed in detail in the following specific implementations and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings:

[0019] Figure 1 It is a structural schematic diagram of a novel folded membrane filter element end seal packaging structure;

[0020] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0021] Wherein: 1. outer shell, 11. discharge hole, 12. first connecting slot, 13. connecting groove, 2. center rod, 21. feed hole, 22. second connecting slot, 23. reinforcement protrusion, 3. filter membrane, 4. end piece, 41. first connecting protrusion, 42. second connecting protrusion, 43. positioning protrusion, 5. reinforcement hoop, 51. first reinforcement flange, 52. second reinforcement flange. DETAILED DESCRIPTION

[0022] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0023] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0024] Please see attached Figure 1 This embodiment discloses a novel folded membrane filter element end seal packaging structure, including a housing 1, a center rod 2, a filter membrane 3 and an end piece 4, which will be described in detail below with reference to the accompanying drawings.

[0025] Please see attached Figure 1 The filter membrane 3 is sleeved on the periphery of the central rod 2, and the filter membrane 3 is folded in sequence along the circumferential direction of the central rod 2. The outer shell 1 is sleeved on the periphery of the filter membrane 3. A plurality of feed holes 21 are opened on the central rod 2, and a plurality of discharge holes 11 are opened on the outer shell 1. The end piece 4 is arranged at one end opening of the outer shell 1 and one end opening of the central rod 2. The opening of one end of the outer shell 1 is connected to form a whole by closely contacting with the inner end surface of the end piece 4 in a molten state and then cooling and solidifying. One end of the filter membrane 3 is closely contacted with the inner end surface of the end piece 4 in a molten state and then The two ends of the center rod 2 are connected as a whole by cooling and solidifying, and one end opening of the center rod 2 is connected as a whole by cooling and solidifying after being in close contact with the inner end face of the end piece 4 in a molten state, a first annular connecting protrusion 41 is convexly provided at the edge of the inner end face of the end piece 4, and a second annular connecting protrusion 42 is convexly provided at the center of the inner end face of the end piece 4, the inner surface of the first connecting protrusion 41 is interference fit with the outer surface of the outer shell 1 and is hot-melt connected as a whole, and the outer surface of the second connecting protrusion 42 is interference fit with the inner surface of the center rod 2 and is hot-melt connected as a whole.

[0026] When the present embodiment is working, the inner end surface of the single-end high-temperature hot-melt end piece 4 is used to avoid damage to the filter membrane 3 by high temperature, thereby improving the yield rate of the filter element and increasing the integrity of the filter element. At the same time, the first connecting protrusion 41 and the second connecting protrusion 42 with interference fit are used to further improve the stability of the connection, ensure a firm connection and good effect, thereby increasing the service life of the filter element, simplifying the packaging steps and reducing the production cost.

[0027] Preferably, a plurality of first annular connecting grooves 12 are recessed at the position where the outer surface of the shell 1 contacts the first connecting protrusion 41, and a plurality of second annular connecting grooves 22 are recessed at the position where the inner surface of the center rod 2 contacts the second connecting protrusion 42, so that the inner end of the end piece 4 in the molten state can be embedded in the first connecting groove 12 and the second connecting groove 22, thereby improving the connection strength.

[0028] In a specific implementation, a reinforcing protrusion 23 is provided on the inner surface of the center rod 2 near the opening at one end thereof, and the inner ends of the reinforcing protrusions 23 are extended and arranged near the opening at one end of the center rod 2. A circular wedge-shaped space is formed between the outer surface of the reinforcing protrusion 23 and the inner surface of the center rod 2, and the second connecting protrusion 42 is installed in the wedge-shaped space, so that the second connecting protrusion 42 in a molten state can be embedded in the wedge-shaped space, thereby improving the connection strength, having strong impact resistance, and tight sealing.

[0029] Preferably, the outer end surface of the end piece 4 is provided with a positioning protrusion 43 that cooperates with a corresponding positioning device.

[0030] As a further improvement of this embodiment, it also includes a reinforcing hoop 5, one end of the reinforcing hoop 5 is sleeved on the outer end face of the end piece 4, and the other end of the reinforcing hoop 5 is sleeved on the outer surface of one end of the outer shell 1, and one end of the reinforcing hoop 5 is provided with a first reinforcing flange 51 protruding inwardly, and the inner end face of the first reinforcing flange 51 abuts against the edge position of the outer end face of the end piece 4. Preferably, an annular connecting groove 13 is recessed on the outer surface of one end of the outer shell 1, and a second reinforcing flange is protruding inwardly at the other end of the reinforcing hoop 5, and the second reinforcing flange is limitedly installed in the connecting groove 13. The use of the reinforcing hoop 5 can further improve the structural strength of the filter element, and at the same time can protect the connecting part and improve the service life of the filter element. In specific implementation, the reinforcing hoop 5 can also be wrapped between the connecting part of the end piece 4 and the outer shell 1 by hot melting, which is convenient for installation and has high connection strength.

[0031] The beneficial technical effects of this embodiment include: adopting a single-end high-temperature hot-melt end piece as the inner end face to avoid damage to the filter membrane caused by high temperature, thereby improving the yield rate of the filter element and ensuring high integrity of the filter element; at the same time, adopting an interference fit first connecting protrusion and a second connecting protrusion can further improve the stability of the connection, ensure a firm connection and good effect, thereby increasing the service life of the filter element, simplifying the packaging steps, and reducing the production cost.

[0032] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. A novel folded membrane filter element end seal packaging structure, characterized in that: The invention comprises an outer shell (1), a central rod (2), a filter membrane (3) and an end piece (4), wherein the filter membrane (3) is sleeved on the periphery of the central rod (2), the filter membrane (3) is folded in sequence along the circumferential direction of the central rod (2), the outer shell (1) is sleeved on the periphery of the filter membrane (3), the central rod (2) is provided with a plurality of feed holes (21), the outer shell (1) is provided with a plurality of discharge holes (11), the end piece (4) is arranged at one end opening of the outer shell (1) and one end opening of the central rod (2), the one end opening of the outer shell (1) is connected to form a whole by closely contacting with the inner end surface of the end piece (4) in a molten state and then cooling and solidifying, and one end of the filter membrane (3) is provided with a plurality of discharge holes (11). The end piece (4) is connected to the outer shell (1) by being in close contact with the inner end surface of the molten end piece (4) and then being cooled and solidified. The opening of one end of the center rod (2) is connected to the inner end surface of the molten end piece (4) by being in close contact with the inner end surface of the molten end piece (4) and then being cooled and solidified. A first annular connecting protrusion (41) is protruding at the edge of the inner end surface of the end piece (4). A second annular connecting protrusion (42) is protruding at the center of the inner end surface of the end piece (4). The inner surface of the first connecting protrusion (41) is interference-fitted with the outer surface of the outer shell (1) and is connected to the outer shell (1) by heat-melting. The outer surface of the second connecting protrusion (42) is interference-fitted with the inner surface of the center rod (2) and is connected to the inner shell (2) by heat-melting.

2. A novel folded membrane filter element end seal packaging structure according to claim 1, characterized in that: A plurality of annular first connection grooves (12) are recessed at a position where the outer surface of the housing (1) contacts the first connection protrusion (41), and a plurality of annular second connection grooves (22) are recessed at a position where the inner surface of the center rod (2) contacts the second connection protrusion (42).

3. The novel folded membrane filter element end seal packaging structure according to claim 1 is characterized in that: A reinforcing protrusion (23) is provided on the inner surface of the center rod (2) near the opening at one end thereof, and the inner ends of the reinforcing protrusion (23) are arranged to extend near the opening at one end of the center rod (2). A circular wedge-shaped space is formed between the outer surface of the reinforcing protrusion (23) and the inner surface of the center rod (2), and the second connecting protrusion (42) is installed in the wedge-shaped space.

4. The novel folded membrane filter element end seal packaging structure according to claim 1, characterized in that: The outer end surface of the end piece (4) is provided with a positioning protrusion (43) which matches with a corresponding positioning device.

5. The novel folded membrane filter element end seal packaging structure according to claim 1 is characterized in that: It also comprises a reinforcing hoop (5), one end of which is sleeved on the outer end surface of the end piece (4), and the other end of which is sleeved on the outer surface of one end of the outer shell (1); one end of the reinforcing hoop (5) is provided with a first reinforcing flange (51) protruding inwardly, and the inner end surface of the first reinforcing flange (51) is in contact with the edge of the outer end surface of the end piece (4).

6. A novel folded membrane filter element end seal packaging structure according to claim 5, characterized in that: An annular connecting groove (13) is formed on the outer surface of one end of the housing (1), and a second reinforcing flange is formed inwardly on the other end of the reinforcing hoop (5), and the second reinforcing flange is positionally mounted in the connecting groove (13).

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