Filtering device for nitrogen making machine

Abstract

The utility model discloses a filtering device for a nitrogen making machine, which comprises a main body, one end of the main body is provided with a limiting ring, the limiting ring is movably provided with a protective net, one side of the protective net close to the main body is provided with a first filtering net, and one side of the first filtering net far away from the protective net is provided with a second filtering net. The first filter screen and the second filter screen are both movably mounted in the main body, a rotating ring is rotationally connected to the limiting ring, a plurality of limiting grooves are formed in the rotating ring, moving shafts are slidably connected into the limiting grooves, control blocks are mounted at the ends, away from the protective screen, of the moving shafts, and the control blocks are slidably mounted on the limiting ring; the device is easy to operate, the protective net can be detached only by rotating the rotating ring, meanwhile, the first filter screen and the second filter screen can be moved out of the device to be cleaned one by one, and the cleaning efficiency is high.

Description

Technical Field

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

[0002] Nitrogen generator refers to a device that uses air as raw material and uses physical methods to separate oxygen and nitrogen in it to obtain nitrogen. According to different classification methods, namely cryogenic air separation, molecular sieve air separation and membrane air separation, nitrogen generator is a nitrogen equipment designed and manufactured according to pressure swing adsorption technology. The nitrogen generator uses high-quality imported carbon molecular sieve as adsorbent and uses the pressure swing adsorption principle at room temperature to separate air to produce high-purity nitrogen.

[0003] The utility model with the publication number CN219682056U provides a filtering device for a nitrogen generator, including a box, wherein two groups of fixed plates are arranged inside the box, which are fixedly connected by connecting rods, and the surfaces of the two groups of fixed plates are embedded with filter screens, and a driving component for pushing the filter screen to move is arranged between the fixed plates and the box. The utility model is provided with a driving component for pushing the filter screen to move inside the box, and firstly, the air intake box is rotated to separate the air intake box from the box, and then after the crank is rotated, the threaded rod is driven to rotate by the fixed rod, so that the threaded rod drives the two groups of fixed plates to move linearly on the surface of the threaded rod when the threaded rod rotates, and then the claw is rotated to make the two groups of sliding card strips move as a whole in the slide groove, at this time, the two groups of fixed plates will extend from the opening end of the box to the outside, so as to facilitate the manual cleaning of the two groups of filter screens, and there is no need to disassemble the two groups of filter screens as a whole, which can prevent some dust from accumulating inside the box and making it inconvenient to clean while ensuring the cleaning effect.

[0004] The filter device designed in the above utility model requires the air intake box to be disassembled, and then the filter screen is pushed and moved outside the air intake box device for manual cleaning. However, the filter screen is restricted by the first connecting plate and the second connecting plate and cannot be removed from the device, causing inconvenience to manual cleaning. Summary of the invention

[0005] The utility model aims to provide a filtering device for a nitrogen generator, so as to solve the problem in the background art that the filter screen is restricted by the first connecting plate and the second connecting plate and cannot be removed from the device.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a filtering device for a nitrogen generator, comprising a main body, a limiting ring is installed at one end of the main body, a protective net is movably installed on the limiting ring, a first filter is arranged on the side of the protective net close to the main body, a second filter is arranged on the side of the first filter away from the protective net, the first filter and the second filter are movably installed in the main body, a rotating ring is rotatably connected to the limiting ring, a plurality of limiting grooves are provided on the rotating ring, moving shafts are slidably connected in the plurality of limiting grooves, control blocks are installed on the ends of the plurality of moving shafts away from the protective net, the plurality of control blocks are slidably installed on the limiting ring, and a clamping block is installed on the plurality of control blocks, and the clamping block is in contact with the protective net.

[0007] Preferably, a plurality of positioning blocks are installed on the inner wall of the main body, and the positioning blocks are in contact with the second filter screen.

[0008] Preferably, a plurality of first connecting tubes are installed on the first filter screen, a plurality of connecting shafts are installed on the second filter screen, and the first connecting tubes are matched with the connecting shafts.

[0009] Preferably, a rotation groove is provided on the limiting ring, and the rotation groove is matched with the rotation ring.

[0010] Preferably, the main body is provided with a plurality of connection grooves, the positions of the connection grooves correspond to the positions of the control block, and the connection grooves and the control block are adapted to each other.

[0011] Preferably, a second connecting tube is installed at the center of the first filter screen, a positioning shaft is movably connected inside the second connecting tube, and the length of the positioning shaft is the same as the distance from the first filter screen to the protective screen.

[0012] Preferably, a lever is installed on the rotating ring, and a moving groove is provided on the limiting ring, and the moving groove is adapted to the lever.

[0013] The beneficial effects of the utility model are:

[0014] In the utility model, when the device needs to be cleaned, the staff rotates the rotating ring to move the movable shaft slidably installed in the limit groove, thereby driving the control block connected thereto to move toward the outside of the device. When the control block moves, the card block installed thereon moves toward the outside of the device synchronously, thereby creating a distance between the card block and the protective net, thereby removing the protective net from the device, and then taking the movable shaft out of the device, thereby driving the first filter net and the second filter net to move synchronously to the outside of the device, and removing the first filter net from the second filter net for separate cleaning. The device is simple to operate and has high cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a three-dimensional structural schematic diagram of a filter device for a nitrogen generator proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of a side cross-sectional structure of a filter device for a nitrogen generator proposed by the utility model;

[0017] Figure 3 This is a front cross-sectional structural schematic diagram of a filter device for a nitrogen generator proposed by the utility model;

[0018] Figure 4 This is an enlarged structural schematic diagram of position A of a filter device for a nitrogen generator proposed by the utility model;

[0019] Figure 5 This is a schematic diagram of the enlarged structure of position B of a filter device for a nitrogen generator proposed by the utility model.

[0020] In the figure: 1. main body; 2. limiting ring; 3. protective net; 4. first filter net; 5. second filter net; 6. rotating ring; 7. limiting groove; 8. moving shaft; 9. control block; 10. clamping block; 11. positioning block; 12. first connecting pipe; 13. connecting shaft; 14. rotating groove; 15. connecting groove; 16. second connecting pipe; 17. positioning shaft; 18. lever; 19. moving groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Specifically, a filtering device for a nitrogen generator includes a main body 1, a limiting ring 2 is installed at one end of the main body 1, a protective net 3 is movably installed on the limiting ring 2, a first filter net 4 is arranged on the side of the protective net 3 close to the main body 1, a second filter net 5 is arranged on the side of the first filter net 4 away from the protective net 3, the first filter net 4 and the second filter net 5 are both movably installed in the main body 1, a rotating ring 6 is rotatably connected to the limiting ring 2, a plurality of limiting grooves 7 are opened on the rotating ring 6, a plurality of moving shafts 8 are slidably connected in the limiting grooves 7, a plurality of moving shafts 8 are slidably connected in one end away from the protective net 3, a plurality of control blocks 9 are installed on the end of the plurality of moving shafts 8, a plurality of control blocks 9 are slidably installed on the limiting ring 2, and a plurality of control blocks 9 are installed with a clamping block 10, and the clamping block 10 is in contact with the protective net 3.

[0023] When the device needs to be cleaned, the staff rotates the rotating ring 6 to move the movable shaft 8 slidably installed in the limit groove 7, thereby driving the control block 9 connected thereto to move toward the outside of the device. When the control block 9 moves, the card block 10 installed thereon moves toward the outside of the device synchronously, thereby creating a distance between the protective net 3, thereby removing the protective net 3 from the device, and then taking the movable shaft 8 out of the device, thereby driving the first filter net 4 and the second filter net 5 to move synchronously to the outside of the device, and removing the first filter net 4 from the second filter net 5 for separate cleaning. The device is simple to operate and has high cleaning efficiency.

[0024] Specifically, in the present embodiment, a plurality of positioning blocks 11 are installed on the inner wall of the main body 1, and the positioning blocks 11 are in contact with the second filter screen 5, so that when the second filter screen 5 moves in the main body 1 until it contacts with the positioning blocks 11, the second filter screen 5 cannot continue to move in the direction away from the protective screen 3, thereby limiting the position of the second filter screen 5 in the main body 1, so that when the second filter screen 5 is installed, it can be clearly judged whether it has moved to the appropriate position.

[0025] Specifically, in the present embodiment, a plurality of first connecting tubes 12 are installed on the first filter screen 4, and a plurality of connecting shafts 13 are installed on the second filter screen 5. The first connecting tubes 12 are adapted to the connecting shafts 13, so that the first filter screen 4 can be movably installed on the second filter screen 5 through the adaptability of the first connecting tubes 12 and the connecting shafts 13, thereby facilitating the movably installation of the first filter screen 4 and the second filter screen 5 as a whole in the main body 1. At the same time, the provision of the first connecting tubes 12 and the connecting shafts 13 facilitates the disassembly of the first filter screen 4 and the second filter screen 5 for separate cleaning.

[0026] Specifically, in this embodiment, a rotation groove 14 is provided on the main body 1 , and the rotation groove 14 is adapted to the rotation ring 6 , so that the rotation ring 6 can be rotatably connected to the limit ring 2 through the rotation groove 14 , thereby providing power guarantee for the movement of the control block 9 .

[0027] Specifically, in this embodiment, a plurality of connecting grooves 15 are provided on the limit ring 2, and the positions of the connecting grooves 15 correspond to the positions of the control block 9, and the connecting grooves 15 and the control block 9 are adapted to each other, so that the control block 9 can be slidably installed on the limit ring 2 through the connecting grooves 15, thereby providing conditions for the control block 9 to move on the limit ring 2.

[0028] Specifically, in the present embodiment, a second connecting tube 16 is installed at the center of the first filter screen 4, and a positioning shaft 17 is movably connected inside the second connecting tube 16. The length of the positioning shaft 17 is the same as the distance from the first filter screen 4 to the protective screen 3, so that when the protective screen 3 is installed on the main body 1, the two ends of the positioning shaft 17 will contact the protective screen 3 and the first filter screen 4 respectively. Therefore, when the protective screen 3 is installed, it can be determined whether the protective screen 3 is installed firmly by the distance between the positioning shaft 17 and the protective screen 3.

[0029] Specifically, in this embodiment, a lever 18 is installed on the rotating ring 6, and a movable groove 19 is opened on the limiting ring 2. The movable groove 19 is adapted to the lever 18, so that the lever 18 can extend out of the rotating ring 6 through the movable groove 19, thereby facilitating the staff to remove the protective net 3 from the device by rotating the lever 18 and clean it.

[0030] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A filter device for a nitrogen generator, comprising a main body (1), characterized in that: A limit ring (2) is installed at one end of the main body (1), a protective net (3) is movably installed on the limit ring (2), a first filter net (4) is arranged on the side of the protective net (3) close to the main body (1), a second filter net (5) is arranged on the side of the first filter net (4) away from the protective net (3), the first filter net (4) and the second filter net (5) are both movably installed in the main body (1), a rotating ring (6) is rotatably connected to the limit ring (2), a plurality of limit grooves (7) are provided on the rotating ring (6), a plurality of movable shafts (8) are slidably connected in the plurality of limit grooves (7), a control block (9) is installed on the end of the plurality of movable shafts (8) away from the protective net (3), the plurality of control blocks (9) are slidably installed on the limit ring (2), and a clamping block (10) is installed on the plurality of control blocks (9), and the clamping block (10) is in contact with the protective net (3).

2. A filter device for a nitrogen generator according to claim 1, characterized in that: A plurality of positioning blocks (11) are installed on the inner wall of the main body (1), and the positioning blocks (11) are in contact with the second filter screen (5).

3. A filter device for a nitrogen generator according to claim 1, characterized in that: A plurality of first connecting tubes (12) are installed on the first filter screen (4), a plurality of connecting shafts (13) are installed on the second filter screen (5), and the first connecting tubes (12) are compatible with the connecting shafts (13).

4. A filter device for a nitrogen generator according to claim 1, characterized in that: The limiting ring (2) is provided with a rotation groove (14), and the rotation groove (14) is adapted to fit the rotation ring (6).

5. A filter device for a nitrogen generator according to claim 1, characterized in that: The main body (1) is provided with a plurality of connection grooves (15), the positions of the connection grooves (15) correspond to the positions of the control block (9), and the connection grooves (15) and the control block (9) are adapted to each other.

6. A filter device for a nitrogen generator according to claim 1, characterized in that: A second connecting pipe (16) is installed at the center of the first filter screen (4), and a positioning shaft (17) is movably connected inside the second connecting pipe (16). The length of the positioning shaft (17) is the same as the distance from the first filter screen (4) to the protective screen (3).

7. A filter device for a nitrogen generator according to claim 1, characterized in that: A shifting rod (18) is mounted on the rotating ring (6), and a moving groove (19) is formed on the limiting ring (2), wherein the moving groove (19) is adapted to fit the shifting rod (18).

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