Nitrogen production filtering device

Abstract

The utility model discloses a nitrogen production filtering device, which relates to the technical field of nitrogen production, and particularly comprises a plurality of filtering barrels which are connected end to end through connecting pipes, the plurality of filtering barrels are all connected to a supporting frame, and the bottom of the supporting frame is vertically connected with a plurality of supporting legs which are symmetrically distributed. The side wall and the bottom of the filtering barrel are respectively connected with an air inlet pipe and an air outlet pipe; the connecting pipe is connected with the adjacent air inlet pipe and air outlet pipe; annular supports are coaxially connected in the filter barrels, filter elements are coaxially connected to the tops of the annular supports, gaps exist between the filter elements and the inner walls of the filter barrels, the tops of the filter elements abut against the inner top faces of the filter barrels, the air inlet pipe is located above the annular supports, and the bottom of each annular support is coaxially connected with a communicating pipe and a cylindrical filter screen in sequence from inside to outside. According to the nitrogen filtering device, nitrogen can be adsorbed and filtered through adsorption and filtration of the filter element and the hydrated aluminosilicate, multiple times of filtration and adsorption of the nitrogen can be achieved through the arrangement of the multiple filter barrels, and the nitrogen filtering quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen production, in particular to a nitrogen production filtering device. Background Art

[0002] Nitrogen is a colorless and odorless gas with very inactive chemical properties. It can only react with hydrogen to produce ammonia under high temperature, high pressure and catalyst conditions. Currently, it needs to be filtered and discharged during the nitrogen production process. Since the produced nitrogen also contains some particulate matter and other gases, it needs to be filtered.

[0003] The current filtration is done by simple drying and water washing, which cannot eliminate impurities and harmful gases in nitrogen, resulting in poor filtration effect and reduced processing efficiency. To this end, we propose a nitrogen production filtration device. Utility Model Content

[0004] In view of the shortcomings that the existing filtration cannot eliminate impurities and harmful gases in nitrogen, resulting in poor filtration effect and reduced processing efficiency, the utility model provides a nitrogen production filtration device, which has the advantages of being able to filter and adsorb impurities multiple times, improving the nitrogen filtration quality, and solving the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A nitrogen production filtering device comprises a plurality of filter barrels connected end to end by connecting pipes, the plurality of filter barrels are connected to a support frame, and a plurality of symmetrically distributed legs are vertically connected to the bottom of the support frame, an air inlet pipe and an air outlet pipe are respectively connected to the side wall and the bottom of the filter barrel, and the connecting pipe is connected to the adjacent air inlet pipe and the air outlet pipe;

[0007] An annular support is coaxially connected inside the filter barrel, a filter element is coaxially connected to the top of the annular support, there is a gap between the filter element and the inner wall of the filter barrel, the top of the filter element is against the top surface of the filter barrel, the air inlet pipe is located above the annular support, and a connecting pipe and a cylindrical filter screen are coaxially connected to the bottom of the annular support from the inside to the outside in sequence. The length of the connecting pipe is smaller than the length of the cylindrical filter screen, there is a gap between the cylindrical filter screen and the inner wall of the filter barrel and it is filled with a molecular sieve formed by hydrated aluminosilicate.

[0008] Optionally, the filter barrel comprises a first cylinder, a third cylinder, and a second cylinder that are coaxially fixedly connected from top to bottom, the bottom of the second cylinder is funnel-shaped and coaxially connected to the air outlet pipe, the top of the first cylinder is coaxially fixedly connected to a top cover, and the annular support is coaxially connected to the inner wall of the first cylinder;

[0009] The bottom of the top cover and the top of the annular support are respectively coaxially fixedly connected with a first annular seat and a second annular seat, and the filter element is sealed and connected between the first annular seat and the second annular seat.

[0010] Optionally, an annular groove is coaxially formed at the bottom of the annular support, an annular mounting seat is coaxially fixedly connected to the top of the connecting pipe, and the annular mounting seat is coaxially fixedly connected in the annular groove.

[0011] Optionally, the top of the cylindrical filter screen is coaxially connected to an annular top plate, and the annular top plate is coaxially fixedly connected to the bottom of the annular mounting seat.

[0012] Optionally, a supporting filter is fixedly connected to the lower end of the interior of the second cylinder.

[0013] Optionally, a plurality of positioning seats are symmetrically connected to the side wall of the third cylinder, and the positioning seats are fixedly connected to the top of the supporting frame by bolts.

[0014] Compared with the prior art, the utility model can realize the adsorption and filtration operation of nitrogen through the preliminary filtration of the filter element and the adsorption filtration of the hydrated aluminosilicate in the third cylinder. At the same time, the multiple filter barrels can further filter and adsorb the impurities in the nitrogen for multiple times, thereby improving the quality of nitrogen filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the internal structure of the filter barrel of the utility model.

[0017] Figure 3 It is a cross-sectional view of the filter barrel of the present utility model.

[0018] Figure 4 For the utility model Figure 3 Schematic diagram of the structure of the middle part.

[0019] In the figure: 1. first cylinder; 2. supporting frame; 3. positioning seat; 4. second cylinder; 5. outlet pipe; 6. top cover; 7. connecting pipe; 8. inlet pipe; 9. third cylinder; 10. supporting leg; 11. annular top plate; 12. filter element; 13. first annular seat; 14. second annular seat; 15. annular mounting seat; 16. connecting pipe; 17. cylindrical filter screen; 18. annular groove; 19. annular support; 20. supporting filter screen; 21. hydrated aluminosilicate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 4 The utility model provides a technical solution: a nitrogen production filtration device, comprising a plurality of filter barrels connected end to end through a connecting pipe 7, the filter barrel comprising a first barrel 1, a third barrel 9, and a second barrel 4 coaxially fixedly connected from top to bottom, the bottom of the second barrel 4 is funnel-shaped and coaxially connected to the outlet pipe 5, the top of the first barrel 1 is coaxially fixedly connected with a top cover 6, in the actual use and installation process, the first barrel 1, the two ends of the third barrel 9, the top of the second barrel 4 and the bottom of the top cover 6 are coaxially connected with skirts, and adjacent skirts are locked by a plurality of bolts, At the same time, in order to improve the sealing of the connection, an annular rubber ring is connected between adjacent skirts, and a number of positioning seats 3 are symmetrically connected to the side wall of the third cylinder 9. In order to improve stability, the positioning seat 3 is fastened to the side wall of the third cylinder 9 by welding, and the positioning seat 3 is fixedly connected to the top of the support frame 2 by bolts, and the bottom of the support frame 2 is vertically connected with a plurality of symmetrically distributed legs 10, which facilitates the disassembly and installation of the first cylinder 1, the third cylinder 9, the top cover 6, and the second cylinder 4, and also facilitates the assembly and disassembly of the third cylinder 9 and the support frame 2.

[0022] An annular support 19 is coaxially connected to the inner wall of the first cylinder 1, and a filter element 12 is coaxially connected to the top of the annular support 19. There is a gap between the filter element 12 and the inner wall of the filter barrel. The bottom of the top cover 6 and the top of the annular support 19 are coaxially fixedly connected with a first annular seat 13 and a second annular seat 14 respectively. The filter element 12 is sealed and connected between the first annular seat 13 and the second annular seat 14. The side wall of the first cylinder 1 is connected to an air inlet pipe 8, and the air inlet pipe 8 is located above the annular support 19. The connecting pipe 7 is connected to the adjacent air inlet pipe 8 and the air outlet pipe 5 through a flange, which is convenient for replacing and installing the connecting pipe 7. Figure 3 , 4 As shown, during actual installation, the filter element 12 is connected between the first annular seat 13 and the second annular seat 14, and the top cover 6 and the second cylinder 4 are locked. The top cover 6 can press and tighten the top of the filter element 12. At the same time, annular rubber rings are coaxially connected at the top and bottom of the filter element 12 to ensure the sealing of the connections at both ends of the filter element 12.

[0023] The bottom of the annular support 19 is coaxially connected with a connecting pipe 16 and a cylindrical filter screen 17 from the inside to the outside, and the connecting pipe 16 and the cylindrical filter screen 17 extend into the third cylinder 9. In order to facilitate the installation and removal between the connecting pipe 16, the cylindrical filter screen 17 and the annular support 19, an annular groove 18 is coaxially opened at the bottom of the annular support 19. The top of the connecting pipe 16 is coaxially fixedly connected with an annular mounting seat 15, and the annular mounting seat 15 is coaxially fixedly connected in the annular groove 18 by bolts. The top of the cylindrical filter screen 17 is coaxially connected with an annular top plate 11 The annular top plate 11 is coaxially fixedly connected to the bottom of the annular mounting seat 15 by bolts. The length of the connecting pipe 16 is less than the length of the cylindrical filter screen 17. There is a gap between the cylindrical filter screen 17 and the inner wall of the filter barrel and a molecular sieve formed by hydrated aluminosilicate 21 is filled therein. A supporting filter screen 20 is fixedly connected to the lower end of the second cylinder 4. The hydrated aluminosilicate 21 is located in the space formed between the top of the supporting filter screen 20 and the annular support 19, which can avoid the hydrated aluminosilicate 21 from clogging the outlet pipe 5 and ensure the normal filtration of nitrogen.

[0024] In summary, when the nitrogen production filter device is used, nitrogen is transported from the air inlet pipe 8 at one end to the filter barrel, the nitrogen enters the first cylinder 1 and is preliminarily filtered through the filter element 12, and the filtered nitrogen is released into the third cylinder 9 through the connecting pipe 16 and the cylindrical filter screen 17, and is adsorbed and filtered by the hydrated aluminosilicate 21 inside it. The adsorbed nitrogen can be filtered multiple times by passing through multiple filter barrels, and then the impurities in the nitrogen can be filtered and adsorbed multiple times, thereby improving the quality of nitrogen filtration.

[0025] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nitrogen production filtration device, comprising a plurality of filter barrels connected end to end via a connecting pipe (7), characterized in that: The plurality of filter barrels are connected to a support frame (2), and the bottom of the support frame (2) is vertically connected to a plurality of symmetrically distributed legs (10), the side walls and the bottom of the filter barrel are respectively connected to an air inlet pipe (8) and an air outlet pipe (5), and the connecting pipe (7) is connected to adjacent air inlet pipes (8) and air outlet pipes (5); An annular support (19) is coaxially connected in the filter barrel, a filter element (12) is coaxially connected to the top of the annular support (19), a gap exists between the filter element (12) and the inner wall of the filter barrel, the top of the filter element (12) abuts against the inner top surface of the filter barrel, an air inlet pipe (8) is located above the annular support (19), a connecting pipe (16) and a cylindrical filter screen (17) are coaxially connected to the bottom of the annular support (19) in sequence from inside to outside, the length of the connecting pipe (16) is shorter than the length of the cylindrical filter screen (17), a gap exists between the cylindrical filter screen (17) and the inner wall of the filter barrel and a molecular sieve formed by hydrated aluminosilicate (21) is filled in the gap.

2. A nitrogen production filtration device according to claim 1, characterized in that: The filter barrel comprises a first barrel (1), a third barrel (9), and a second barrel (4) which are coaxially fixedly connected from top to bottom, the bottom of the second barrel (4) is funnel-shaped and coaxially connected to the air outlet pipe (5), the top of the first barrel (1) is coaxially fixedly connected to a top cover (6), and an annular support (19) is coaxially connected to the inner wall of the first barrel (1); The bottom of the top cover (6) and the top of the annular support (19) are coaxially fixedly connected with a first annular seat (13) and a second annular seat (14), respectively, and the filter element (12) is sealed between the first annular seat (13) and the second annular seat (14).

3. A nitrogen production filtration device according to claim 2, characterized in that: The bottom of the annular support (19) is coaxially provided with an annular groove (18), the top of the connecting pipe (16) is coaxially fixedly connected with an annular mounting seat (15), and the annular mounting seat (15) is coaxially fixedly connected in the annular groove (18).

4. A nitrogen production filtration device according to claim 3, characterized in that: The top of the cylindrical filter screen (17) is coaxially connected to an annular top plate (11), and the annular top plate (11) is coaxially fixedly connected to the bottom of the annular mounting seat (15).

5. A nitrogen production filtration device according to claim 2, characterized in that: A supporting filter screen (20) is fixedly connected to the lower end of the interior of the second cylinder (4).

6. A nitrogen production filtration device according to claim 2, characterized in that: A plurality of positioning seats (3) are symmetrically connected to the side wall of the third cylinder (9), and the positioning seats (3) are fixedly connected to the top of the supporting frame (2) by bolts.

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