Mounting structure of filter element, filter element and filter

Abstract

The utility model discloses a mounting structure of a filter element, the filter element and a filter, wherein the head part and the tail part of a filter pipe are not easy to break and the back flushing effect is good. The filter element comprises a filter pipe formed by rolling a porous metal film, the mounting structure comprises a head joint and a tail joint, the head joint comprises a head butt joint pipe and a head sealing piece which are connected with the head of the filter pipe, and the tail joint comprises a tail butt joint pipe and a tail sealing piece which are connected with the tail of the filter pipe; the head sealing piece comprises a first shrinking channel and an expanding channel which are sequentially arranged from the head to the tail. The head connector further comprises a first protection barrel, and the two ends of the first protection barrel are connected with the head butt joint pipe and the head sealing piece respectively. The head part of the first protective cylinder is provided with a second shrinking channel; the tail connector further comprises a second protection barrel, and the two ends of the second protection barrel are connected with the tail butt joint pipe and the tail sealing piece respectively.

Description

Technical Field

[0001] The utility model relates to the technical field of filter elements, and in particular to a filter element installation structure, a filter element and a filter. Background Art

[0002] For filter tubes made of flexible porous metal film, since the porous metal film is very thin (usually 0.02-2mm), joints need to be installed at the head and tail of the filter tube before being installed on the filter plate. After a period of use, high-pressure back-blowing air needs to be introduced into the filter tube to back-blow and clean the filter tube to restore the filtration flux.

[0003] When the filter tube is subjected to the back-blowing cleaning of high-pressure back-blowing gas, the speed of the high-pressure back-blowing gas flushing the connection between the head of the filter tube and the head joint is the highest. Although the speed is attenuated when flowing to the tail of the filter tube, the high-pressure back-blowing gas will gather at the tail of the filter tube. Therefore, the connection between the head of the filter tube and the head joint and the connection between the tail of the filter tube and the tail joint of the filter tube are easily broken due to the flushing of high-pressure back-blowing gas. However, in order to improve the cleaning effect, it is usually adopted to increase the back-blowing pressure, which further accelerates the rupture of the head and tail of the filter tube. Utility Model Content

[0004] The first technical problem to be solved by the utility model is to provide a mounting structure for a filter element whose head and tail parts of a filter tube are not easily broken, a filter element and a filter.

[0005] The second technical problem to be solved by the utility model is to provide a filter element installation structure, a filter element and a filter whose head and tail parts of the filter tube are not easy to break and have good back-blowing effect.

[0006] In order to achieve the above purpose, the utility model first provides two filter element installation structures, and the technical solutions are as follows:

[0007] The first installation structure of the filter element: the filter element includes a filter tube rolled from a porous metal film, and the installation structure includes a head joint and a tail joint, the head joint includes a head butt joint connected to the head of the filter tube and a head seal, and the tail joint includes a tail butt joint connected to the tail of the filter tube and a tail seal; the head joint also includes a first protective tube, and the two ends of the first protective tube are respectively connected to the head butt joint and the head seal; the tail joint also includes a second protective tube, and the two ends of the second protective tube are respectively connected to the tail butt joint and the tail seal.

[0008] As a further improvement to the installation structure of the first filter element mentioned above: a first step matching the tail of the head seal is provided on the outer side of the head of the first protective tube.

[0009] As a further improvement to the installation structure of the first filter element mentioned above: the length of the first step is 4 to 6 mm.

[0010] As a further improvement of the installation structure of the first filter element, two ends of the first protective tube are respectively fully welded to the head butt tube and the head seal by argon arc welding.

[0011] As a further improvement of the installation structure of the first filter element mentioned above: a second step is provided on the outer side of the head of the second protective tube to match the tail of the tail docking tube; a third step is provided on the inner side of the tail of the second protective tube to match the tail seal.

[0012] As a further improvement to the installation structure of the first filter element mentioned above: the length of the second step is 5 to 7 mm; the length of the third step is 4 to 6 mm.

[0013] As a further improvement of the installation structure of the first filter element mentioned above: both ends of the second protective tube are respectively fully welded to the tail butt tube and the tail seal by argon arc welding.

[0014] As a further improvement to the installation structure of the first filter element mentioned above: the length of the first protective tube is 45 to 65 mm; the length of the second protective tube is 25 to 45 mm.

[0015] The second installation structure of the filter element: the filter element includes a filter tube rolled from a porous metal film, and the installation structure includes a head joint and a tail joint, the head joint includes a head butt joint connected to the head of the filter tube and a head seal, and the tail joint includes a tail butt joint connected to the tail of the filter tube and a tail seal; the head seal includes a first reduction channel and an expansion channel arranged in sequence from the head to the tail; the head joint also includes a first protective tube, and the two ends of the first protective tube are respectively connected to the head butt joint and the head seal; the head of the first protective tube has a second reduction channel; the tail joint also includes a second protective tube, and the two ends of the second protective tube are respectively connected to the tail butt joint and the tail seal.

[0016] As a further improvement of the installation structure of the second filter element mentioned above: the head seal also includes a first straight channel arranged between the first shrinking channel and the expanding channel.

[0017] As a further improvement to the installation structure of the second filter element mentioned above: the length of the first straight channel is 2 to 4 mm.

[0018] As a further improvement of the installation structure of the second filter element mentioned above: the length of the first narrowing channel is 30-40 mm; the length of the expanding channel is 20-30 mm; the length of the second narrowing channel is 4-6 mm.

[0019] As a further improvement to the installation structure of the second filter element mentioned above: the length of the first protective tube is 75-95 mm; the length of the second protective tube is 65-85 mm.

[0020] As a further improvement of the installation structure of the above-mentioned second filter element: a first step adapted to the tail of the head seal is provided on the outer side of the head of the first protective tube, and the length of the first step is 5 to 7 mm; the head seal also includes a second straight channel adapted to the first step.

[0021] As a further improvement of the installation structure of the above-mentioned second filter element: a second step is provided on the outer side of the head of the second protective tube to match the tail of the tail docking tube, and the length of the second step is 5 to 7 mm; a third step is provided on the inner side of the tail of the second protective tube to match the tail seal, and the length of the third step is 4 to 6 mm.

[0022] As a further improvement of the installation structure of the above-mentioned second filter element: the two ends of the first protective tube are respectively welded to the head butt tube and the head seal by argon arc welding; the two ends of the second protective tube are respectively welded to the tail butt tube and the tail seal by argon arc welding.

[0023] In order to achieve the above purpose, the utility model provides a filter element, and the technical solution is as follows:

[0024] The filter element comprises a filter tube formed by rolling a porous metal film and any one of the two installation structures of the above-mentioned filter elements.

[0025] In order to achieve the above purpose, the utility model further provides a filter, and the technical solution is as follows:

[0026] A filter comprises one or more filter elements as described above.

[0027] The installation structure of the filter element, the filter element and the filter of the utility model have the following advantages:

[0028] In the first installation structure of the filter element of the utility model, firstly, by arranging a first protective cylinder in the head joint, the distance between the filter tube head and the orifice plate is extended, thereby reducing the speed of the high-pressure backblowing gas when flowing to the filter tube head, thereby effectively preventing the filter tube head from rupturing; secondly, by arranging a second protective cylinder in the tail joint, the high-pressure backblowing gas no longer gathers at the tail of the filter tube, but gathers at the tail of the second protective cylinder, thereby reducing the extrusion and impact on the tail of the filter tube, and effectively preventing the tail of the filter tube from rupturing.

[0029] In the first filter element installation structure of the utility model, by setting the head seal of the double bell mouth structure, the flow rate of the high-pressure back-blowing gas entering the filter tube is significantly increased, and the back-blowing effect can be significantly improved. Since the head and tail of the filter tube are protected by the first protective tube and the second protective tube, they are not easy to break.

[0030] It can be seen that the installation structure of the filter element, the filter element and the filter of the utility model are simple in structure and ingenious in conception. The installation structure can effectively prevent the head and tail of the filter tube from breaking, and can improve the backwash effect, thereby significantly improving the service life of the filter element and the filter.

[0031] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. Additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings constituting a part of the present invention are used to assist the understanding of the present invention. The contents provided in the drawings and their related descriptions in the present invention can be used to explain the present invention, but do not constitute an improper limitation on the present invention.

[0033] In the attached picture:

[0034] Figure 1 This is a schematic diagram of the structure of the filter element of Example 1 of the utility model.

[0035] Figure 2 This is a schematic structural diagram of the first protective tube in the installation structure of the filter element in Example 1 of the utility model.

[0036] Figure 3 This is a schematic structural diagram of the second protective tube in the installation structure of the filter element in Example 1 of the utility model.

[0037] Figure 4 This is a schematic diagram of the structure of the filter element of Example 2 of the utility model.

[0038] Figure 5 This is a schematic structural diagram of the head seal in the installation structure of the filter element of Example 2 of the utility model.

[0039] Figure 6 This is a schematic structural diagram of the first protective tube in the installation structure of the filter element of Example 2 of the utility model.

[0040] Figure 7 This is a schematic structural diagram of the second protective tube in the installation structure of the filter element of Example 2 of the utility model.

[0041] The relevant marks in the above drawings are:

[0042] 110-filter tube, 120-porous support tube, 210-head butt joint tube, 220-head seal, 230-first protective tube, 231-first step, 232-second narrowing channel, 310-tail butt joint tube, 320-tail seal, 330-second protective tube, 331-second step, 332-third step, 221-first narrowing channel, 222-enlarging channel, 223-first straight channel, 224-second straight channel. DETAILED DESCRIPTION

[0043] The utility model is described clearly and completely below in conjunction with the accompanying drawings. A person skilled in the art will be able to implement the utility model based on these descriptions. Before describing the utility model in conjunction with the accompanying drawings, it should be particularly noted that:

[0044] The technical solutions and technical features provided in each part of the utility model, including the following description, can be combined with each other if there is no conflict.

[0045] In addition, the embodiments of the present invention involved in the following description are generally only a part of the embodiments of the present invention, rather than all of the embodiments. Therefore, based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0046] About the terms and units in the present invention: The terms "include", "have" and any variations thereof in the specification and claims of the present invention and related parts are intended to cover non-exclusive inclusions.

[0047] Example 1

[0048] Figure 1 Schematic diagram of the structure of the filter element of this embodiment. Figure 2 It is a schematic structural diagram of the first protective tube in the installation structure of the filter element of this embodiment. Figure 3 It is a schematic structural diagram of the second protective tube in the installation structure of the filter element of this embodiment.

[0049] like Figure 1-3As shown, the filter element includes a filter tube 110 rolled from a porous metal film, a porous support tube 120 located inside the filter tube 110, and a mounting structure for mounting the filter tube 110 and the porous support tube 120; the mounting structure includes a head joint and a tail joint, the head joint includes a head butt joint 210 and a head seal 220 connected to the head of the filter tube 110, and the tail joint includes a tail butt joint 310 and a tail seal 320 connected to the tail of the filter tube 110; the head butt joint 210 and the tail butt joint 310 both have steps adapted to the filter tube 110 and the porous support tube 120.

[0050] The head joint also includes a first protective tube 230, and the two ends of the first protective tube 230 are respectively connected to the head butt tube 210 and the head seal 220; a first step 231 adapted to the tail of the head seal 220 is provided on the outer side of the head of the first protective tube 230, and the length of the first step 231 is 5 mm, and the head seal 220 also includes a second straight channel 224 adapted to the first step 231; the two ends of the first protective tube 230 are respectively welded to the head butt tube 210 and the head seal 220 by argon arc welding, and the welding point has a 1.5 mm chamfer.

[0051] The tail joint also includes a second protective tube 330, the two ends of which are respectively connected to the tail butt tube 310 and the tail seal 320; a second step 331 adapted to the tail of the tail butt tube 310 is provided on the outer side of the head of the second protective tube 330, and the length of the second step 331 is 6 mm; a third step 332 adapted to the tail seal 320 is provided on the inner side of the tail of the second protective tube 330, and the length of the third step 332 is 4.5 mm; the two ends of the second protective tube 330 are respectively welded to the tail butt tube 310 and the tail seal 320 by argon arc welding, and the welding point has a 1.5 mm chamfer.

[0052] The length of the first protective tube 230 is 56 mm; the length of the second protective tube 330 is 36 mm.

[0053] Example 2

[0054] Figure 4 Schematic diagram of the structure of the filter element of this embodiment. Figure 5 It is a schematic structural diagram of the head seal in the installation structure of the filter element of this embodiment. Figure 6 It is a schematic structural diagram of the first protective tube in the installation structure of the filter element of this embodiment. Figure 7 It is a schematic structural diagram of the second protective tube in the installation structure of the filter element of this embodiment.

[0055] like Figure 4-7As shown, the filter element includes a filter tube 110 rolled from a porous metal film, a porous support tube 120 located inside the filter tube 110, and a mounting structure for mounting the filter tube 110 and the porous support tube 120; the mounting structure includes a head joint and a tail joint, the head joint includes a head butt joint 210 and a head seal 220 connected to the head of the filter tube 110, and the tail joint includes a tail butt joint 310 and a tail seal 320 connected to the tail of the filter tube 110; the head butt joint 210 and the tail butt joint 310 both have steps adapted to the filter tube 110 and the porous support tube 120.

[0056] The head seal 220 includes a first shrinking channel 221, a first straight channel 223 and an enlarged channel 222 arranged in sequence from the head to the tail, the length of the first shrinking channel 221 is 33 mm, the length of the first straight channel 223 is 3 mm, and the length of the enlarged channel 222 is 26 mm.

[0057] The head joint also includes a first protective tube 230, the two ends of which are respectively connected to the head butt tube 210 and the head seal 220; a first step 231 adapted to the tail of the head seal 220 is provided on the outer side of the head of the first protective tube 230, and the length of the first step 231 is 6 mm; the two ends of the first protective tube 230 are respectively welded to the head butt tube 210 and the head seal 220 by argon arc welding, and the welding points have chamfers; the head of the first protective tube 230 has a second reduction channel 232, and the length of the second reduction channel 232 is 5 mm.

[0058] The tail joint also includes a second protective tube 330, the two ends of which are respectively connected to the tail butt tube 310 and the tail seal 320; a second step 331 adapted to the tail of the tail butt tube 310 is provided on the outer side of the head of the second protective tube 330, and the length of the second step 331 is 6 mm; a third step 332 adapted to the tail seal 320 is provided on the inner side of the tail of the second protective tube 330, and the length of the third step 332 is 4.5 mm; the two ends of the second protective tube 330 are respectively welded to the tail butt tube 310 and the tail seal 320 by argon arc welding, and the welding points have chamfers.

[0059] Compared with Example 1, the back-blowing air pressure in the filter tube 110 of this embodiment is higher. Therefore, in order to improve the protection effect, the length of the first protective tube 230 and the second protective tube 330 are extended, so that the length of the first protective tube 230 is 86 mm, and the length of the second protective tube 330 is 76 mm.

[0060] The filter of the present invention comprises a perforated plate, on which one or more filter elements are mounted. The filter element is sealed and connected to the perforated plate via a head seal 220 during installation. The shape of the head seal 220 can be adaptively adjusted according to the installation method.

[0061] The above is an explanation of the relevant contents of the utility model. A person skilled in the art will be able to implement the utility model based on these explanations. Based on the above contents of the utility model, all other embodiments obtained by a person skilled in the art without creative work shall fall within the scope of protection of the utility model.

Claims

1. A filter element installation structure, the filter element comprising a filter tube (110) formed by rolling a porous metal film, the installation structure comprising a head joint and a tail joint, the head joint comprising a head butt joint (210) connected to the head of the filter tube (110) and a head seal (220), the tail joint comprising a tail butt joint (310) connected to the tail of the filter tube (110) and a tail seal (320); characterized in that: The head seal (220) comprises a first shrinking channel (221) and an expanding channel (222) which are arranged in sequence from the head to the tail; The head joint further comprises a first protective tube (230), the two ends of which are respectively connected to the head butt joint tube (210) and the head seal (220); the head of the first protective tube (230) has a second shrinking channel (232); The tail joint further comprises a second protective tube (330), and two ends of the second protective tube (330) are respectively connected to the tail butt joint tube (310) and the tail sealing member (320).

2. The filter element installation structure according to claim 1, characterized in that: The head seal (220) further comprises a first straight channel (223) arranged between the first shrinking channel (221) and the expanding channel (222).

3. The filter element installation structure according to claim 2, characterized in that: The length of the first straight channel (223) is 2 to 4 mm.

4. The filter element installation structure according to claim 1, characterized in that: The length of the first shrinking channel (221) is 30 to 40 mm; the length of the expanding channel (222) is 20 to 30 mm; and the length of the second shrinking channel (232) is 4 to 6 mm.

5. The filter element installation structure according to claim 1, characterized in that: The length of the first protective tube (230) is 75 to 95 mm; the length of the second protective tube (330) is 65 to 85 mm.

6. The filter element installation structure according to claim 1, characterized in that: A first step (231) adapted to the tail of the head seal (220) is provided on the outer side of the head of the first protective tube (230), and the length of the first step (231) is 5 to 7 mm; the head seal (220) also includes a second straight channel (224) adapted to the first step (231).

7. The filter element installation structure according to claim 1, characterized in that: A second step (331) adapted to the tail of the tail docking tube (310) is provided on the outer side of the head of the second protective tube (330), and the length of the second step (331) is 5 to 7 mm; a third step (332) adapted to the tail seal (320) is provided on the inner side of the tail of the second protective tube (330), and the length of the third step (332) is 4 to 6 mm.

8. The filter element installation structure according to claim 1, characterized in that: The two ends of the first protective tube (230) are respectively welded to the head butt tube (210) and the head seal (220) by argon arc welding; the two ends of the second protective tube (330) are respectively welded to the tail butt tube (310) and the tail seal (320) by argon arc welding.

9. A filter element, comprising a filter tube (110) formed by rolling a porous metal film, characterized in that: It also includes the mounting structure according to any one of claims 1-8.

10. A filter, characterized in that: Comprising one or more filter elements as claimed in claim 9.

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