Pressure swing adsorption type nitrogen making machine with filtering effect

Abstract

The utility model relates to the technical field of oxygen production equipment, and discloses a pressure swing adsorption type nitrogen making machine with a filtering effect, which comprises a base, oxygen production equipment and a filtering box, and a filtering mechanism is arranged in the filtering box; and the filtering mechanism comprises a first filter screen and a second filter screen. A first pull handle is pulled in a reciprocating mode to enable a brush to move in a reciprocating mode, the brush at the bottom of a connecting plate can clean impurities on a filter layer of a first filter screen or a second filter screen when moving, and the cleaned impurities can be discharged through a cleaning opening; a clamping rod retracts by pulling a pull ring downwards, then a first filter screen or a second filter screen is aligned with a corresponding sliding rail to be inserted into the sliding rail till insertion blocks at the two ends of a second sealing plate are inserted into fixing concave blocks, then the pull ring is loosened, and the clamping rod automatically penetrates through fixing holes under the springback effect of a spring and is connected with a clamping groove in a clamped mode. Locking and fixing of the first filter screen or the second filter screen are achieved, rapid installation of the filter screens is completed, and the stability of the filter screens in use is improved.

Description

Technical Field

[0001] This utility model relates to the field of oxygen generation equipment technology, specifically a pressure swing adsorption nitrogen generator with filtration effect. Background Technology

[0002] Pressure swing adsorption (PSA) nitrogen generators are nitrogen production equipment designed and manufactured according to pressure swing adsorption technology. They use carbon molecular sieves as adsorbents and air as raw materials, and separate nitrogen from the air using the principle of room temperature pressure swing adsorption.

[0003] Chinese patent provides a pressure swing adsorption (PSA) nitrogen generator, publication number CN219764916U, which includes a cabinet. Adsorption towers are fixedly installed on both sides of the cabinet's interior. A filter box is fixedly installed at the bottom of one side of the cabinet. A filtration mechanism is fixedly installed inside the top of the filter box. A drying mechanism is provided at the bottom of the filtration mechanism. The filtration mechanism includes a fixing plate, which is fixedly installed on the inner wall of the top of the filter box. An arc-shaped groove is opened on one side of the fixing plate. A rotating plate is movably installed inside the filter box via a shaft. First filter screens are symmetrically fixedly installed on both sides of the rotating plate.

[0004] The aforementioned device is capable of cleaning the first filter and facilitating the replacement of the desiccant in the drying chamber. However, since the device contains a first filter and a second filter, it can only clean the first filter and cannot clean or disassemble the second filter. Furthermore, the first filter, the second filter, and the drying chamber are not locked and secured during installation, which can affect the filtration effect to some extent. Therefore, it is necessary to provide a pressure swing adsorption nitrogen generator with filtration effect. Utility Model Content

[0005] The purpose of this invention is to provide a pressure swing adsorption nitrogen generator with filtration effect, so as to solve the problem that the filter screen cannot be cleaned or disassembled in the existing device, and the filter screen and drying box are not locked and fixed during installation, which affects the filtration effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pressure swing adsorption (PSA) nitrogen generator with filtration effect, comprising a base, an oxygen generator, and a filter box, wherein a filtration mechanism is provided inside the filter box; the filtration mechanism includes a first filter screen and a second filter screen, a slide rail is provided on the filter box to slidably overlap with the first and second filter screens, a cleaning port is provided on the filter box, a first sealing plate is slidably connected to the cleaning port, a connecting rod is fixedly connected to one side of the first sealing plate, a connecting plate is fixedly connected to one end of the connecting rod, a brush is fixedly provided at the bottom of the connecting plate, a buckle plate is rotatably provided on the other side of the first sealing plate, and a buckle plate is fixedly provided on the filter box to fasten the buckle plate. The installation column is connected; a second sealing plate is fixedly connected to one end of the first filter screen and the second filter screen, and a plug is fixedly provided at both ends of the second sealing plate. The plug has a fixing hole. A fixing recess is fixedly provided on the filter box. A slot is provided in the fixing recess. A cylinder is fixedly provided at the bottom of the fixing recess. A slider is slidably connected in the cylinder. A locking rod is fixedly provided on the slider. The locking rod slides through the cylinder and passes through the fixing hole to engage with the slot. A guide rod is fixedly provided at the bottom of the slider. A spring is sleeved on the guide rod and fixedly provided between the slider and the cylinder. The bottom of the guide rod slides through the cylinder and is fixedly connected to a limit block. A pull ring is fixedly provided on the limit block.

[0007] Preferably, a first handle is fixedly provided on the side of the first sealing plate near the buckle plate, and a second handle is fixedly provided on the side of the second sealing plate near the insert block.

[0008] Preferably, a drying chamber is provided between the first filter and the second filter, and a desiccant is provided inside the drying chamber.

[0009] Preferably, the filter box has an installation port for installing the drying box, and a mounting plate is fixedly installed inside the filter box, with the drying box slidably connected to the mounting plate.

[0010] Preferably, a mounting plate is fixedly installed at one end of the drying box near the installation port, a fixing bolt is inserted into the mounting plate, a fixing screw hole is opened on the filter box for threaded connection with the fixing bolt, and a third pull handle is fixedly installed on the mounting plate.

[0011] Preferably, the oxygen generator and the filter box are both fixedly mounted on the base. An air inlet pipe is connected to the filter box. A connecting pipe is connected between the oxygen generators. A transmission pipe is connected between the connecting pipe and the filter box. An exhaust pipe is connected to the oxygen generator.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1) This pressure swing adsorption nitrogen generator with filtration effect can be decoupled from the mounting column by rotating the corresponding buckle plate to the end away from the mounting column. Then, by pulling the first handle, the first sealing plate moves the connecting plate through the connecting rod. The brush at the bottom of the connecting plate can clean the impurities on the filter layer of the first or second filter screen when it moves. By pulling the first handle back and forth, the brush can move back and forth and the cleaned impurities can be discharged through the cleaning port. The operation is simple and convenient, which greatly improves the service life of the filter screen.

[0014] 2) This pressure swing adsorption nitrogen generator with filtration effect retracts the locking rod by pulling down the pull ring. Then, the first or second filter screen is inserted into the corresponding slide rail until the inserts at both ends of the second sealing plate are inserted into the fixing recess. After releasing the pull ring, the locking rod automatically passes through the fixing hole and engages with the slot under the spring's rebound, thus locking and fixing the first or second filter screen. This completes the quick installation of the filter screen and improves the stability of the filter screen during use.

[0015] 3) This pressure swing adsorption nitrogen generator with filtration effect allows the guide rod to disengage from the slot and the fixing hole on the insert block by pulling down the pull ring and moving the slider. Then, by pulling the second handle, the first or second filter screen can be pulled out from the slide rail, which can quickly disassemble the filter screen and facilitate the maintenance and replacement of the first or second filter screen. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a pressure swing adsorption nitrogen generator with filtration effect according to an embodiment of the present invention.

[0017] Figure 2 This is a cross-sectional view of the filter box in an embodiment of the present invention;

[0018] Figure 3 This is a three-dimensional structural diagram of the first filter screen, the second filter screen, and the drying oven in an embodiment of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the drying oven in an embodiment of the present utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the filter box in an embodiment of the present utility model;

[0021] Figure 6 As an embodiment of this utility model Figure 5 Enlarged view of the structure at point A in the middle.

[0022] In the diagram: 1. Base; 2. Oxygen generator; 3. Connecting pipe; 4. Exhaust pipe; 5. Transmission pipe; 6. Filter box; 7. Inlet pipe; 8. Filtering mechanism; 801. First filter screen; 802. Second filter screen; 803. Drying box; 804. Slide rail; 805. Cleaning port; 806. Mounting plate; 807. Desiccant; 808. Mounting plate; 809. Fixing bolts; 810. Fixing screw holes; 811. First sealing plate; 812. Connecting... 813. Connecting rod; 814. Connecting plate; 815. Brush; 816. Buckle plate; 817. Mounting post; 818. First handle; 819. Second sealing plate; 820. Second handle; 821. Insert block; 822. Fixing hole; 823. Fixing recess; 824. Cylinder; 825. Locking rod; 826. Locking groove; 827. Guide rod; 828. Spring; 829. Limiting block; 830. Pull ring; 831. Third handle. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Combination Figures 1-6 A pressure swing adsorption nitrogen generator with filtration effect includes a base 1, an oxygen generator 2, and a filter box 6. The oxygen generator 2 and the filter box 6 are both fixedly mounted on the base 1. An air inlet pipe 7 is connected to the filter box 6. A connecting pipe 3 is connected between the oxygen generator 2. A transmission pipe 5 is connected between the connecting pipe 3 and the filter box 6. An exhaust pipe 4 is connected to the oxygen generator 2. A filtration mechanism 8 is installed inside the filter box 6.

[0025] See Figure 3 and Figure 5 Furthermore, the filtration mechanism 8 includes a first filter screen 801 and a second filter screen 802. The filter box 6 is provided with a slide rail 804 that slides and overlaps with the first filter screen 801 and the second filter screen 802. The filter box 6 is provided with a cleaning port 805. A first sealing plate 811 is slidably connected inside the cleaning port 805. A connecting rod 812 is fixedly connected to one side of the first sealing plate 811. A connecting plate 813 is fixedly connected to one end of the connecting rod 812. A brush 814 is fixedly provided at the bottom of the connecting plate 813. A buckle plate 815 is rotatably provided on the other side of the first sealing plate 811. An installation post 816 that is fastened to the buckle plate 815 is fixedly provided on the filter box 6. A first pull handle 817 is fixedly provided on the side of the first sealing plate 811 near the buckle plate 815.

[0026] Specifically, by rotating the corresponding buckle plate 815 to the end away from the mounting post 816, the buckle plate 815 is unfastened to the mounting post 816. Then, by pulling the first handle 817, the first sealing plate 811 moves the connecting plate 813 via the connecting rod 812. When the connecting plate 813 moves, the brush 814 at the bottom can clean the impurities on the filter layer of the first filter screen 801 or the second filter screen 802. By pulling the first handle 817 back and forth, the brush 814 can move back and forth and discharge the cleaned impurities through the cleaning port 805. The operation is simple and convenient, which greatly improves the service life of the filter screen.

[0027] See Figure 2 , Figure 3 , Figure 5 and Figure 6 Furthermore, it is found that a second sealing plate 818 is fixedly connected to one end of the first filter screen 801 and the second filter screen 802. Insert blocks 820 are fixedly installed at both ends of the second sealing plate 818. Fixing holes 821 are opened on the insert blocks 820. A fixing recess 822 is fixedly installed on the filter box 6. A slot 826 is opened inside the fixing recess 822. A cylinder 823 is fixedly installed at the bottom of the fixing recess 822. A slider 824 is slidably connected inside the cylinder 823. A locking rod 82 is fixedly installed on the slider 824. 5. The locking rod 825 slides through the cylinder 823 and passes through the fixing hole 821 to engage with the locking groove 826. The bottom of the slider 824 is fixedly provided with a guide rod 827. A spring 828 is sleeved on the guide rod 827 and fixedly provided between the slider 824 and the cylinder 823. The bottom of the guide rod 827 slides through the cylinder 823 and is fixedly connected to a limit block 829. A pull ring 830 is fixedly provided on the limit block 829. A second pull handle 819 is fixedly provided on the side of the second sealing plate 818 near the insert block 820.

[0028] Specifically, by pulling down the pull ring 830, the locking rod 825 retracts. Then, the first filter screen 801 or the second filter screen 802 is aligned with the corresponding slide rail 804 and inserted until the inserts 820 at both ends of the second sealing plate 818 are inserted into the fixing recesses 822. After that, the pull ring 830 is released, and the locking rod 825 automatically passes through the fixing hole 821 and engages with the slot 826 under the return action of the spring 828, thereby locking and fixing the first filter screen 801 or the second filter screen 802. This allows for quick installation of the filter screen, improving its stability during use. By pulling down the pull ring 830, the guide rod 827, through the slider 824, causes the locking rod 825 to disengage from the slot 826 and the fixing hole 821 on the insert block 820. Then, by pulling the second pull handle 819, the first filter screen 801 or the second filter screen 802 can be pulled out from the slide rail 804, thus completing the quick disassembly of the filter screen and facilitating the maintenance and replacement of the first filter screen 801 or the second filter screen 802.

[0029] See Figure 3-Figure 5Furthermore, a drying chamber 803 is provided between the first filter screen 801 and the second filter screen 802. A desiccant 807 is provided inside the drying chamber 803. An installation port for installing the drying chamber 803 is provided on the filter box 6. A mounting plate 806 is fixedly provided inside the filter box 6. The drying chamber 803 is slidably connected to the mounting plate 806. An installation plate 808 is fixedly provided at one end of the drying chamber 803 near the installation port. A fixing bolt 809 is inserted into the installation plate 808. A fixing screw hole 810 is provided on the filter box 6 for threaded connection with the fixing bolt 809. A third pull handle 831 is fixedly provided on the installation plate 808.

[0030] Specifically, by removing the fixing bolts 809 on the mounting plate 808, and then pulling the third handle 831, the drying box 803 can be pulled out from the mounting plate 806, after which the desiccant 807 can be replaced.

[0031] In actual operation, the gas enters the filter box 6 through the air inlet pipe 7. The first filter 801 performs preliminary filtration of the gas. The desiccant 807 in the drying box 803 can dry the moisture in the gas. The second filter 802 performs secondary filtration of the gas. The filtered gas is transported to the oxygen generator 2 through the transmission pipe 5 to produce oxygen. The produced oxygen is discharged through the exhaust pipe 4.

[0032] When it is necessary to clean the filter layer of the first filter screen 801 or the second filter screen 802, rotate the corresponding buckle plate 815 to the end away from the mounting post 816 to disengage the buckle plate 815 from the mounting post 816. Then, by pulling the first handle 817, the first sealing plate 811 moves the connecting plate 813 through the connecting rod 812. The brush 814 at the bottom of the connecting plate 813 can clean the impurities on the filter layer of the first filter screen 801 or the second filter screen 802 when it moves. By pulling the first handle 817 back and forth, the brush 814 can move back and forth and discharge the cleaned impurities through the cleaning port 805.

[0033] When the first filter 801 or the second filter 802 needs maintenance or replacement, pull down the pull ring 830 to cause the guide rod 827 to disengage from the slot 826 and the fixing hole 821 on the insert block 820 via the slider 824 and the locking rod 825. Then, pull the second pull handle 819 to pull the first filter 801 or the second filter 802 out of the slide rail 804. When installing the first filter 801 or the second filter 802, first pull down... Pull ring 830 retracts locking rod 825, then the first filter screen 801 or the second filter screen 802 is aligned with the corresponding slide rail 804 and inserted until the insert blocks 820 at both ends of the second sealing plate 818 are inserted into the fixing recess 822. Then, pull ring 830 is released, and locking rod 825 automatically passes through fixing hole 821 and engages with slot 826 under the rebound action of spring 828, thereby locking and fixing the first filter screen 801 or the second filter screen 802 and completing the filter screen installation.

[0034] When it is necessary to replace the desiccant 807 in the drying chamber 803, remove the fixing bolts 809 on the mounting plate 808, and then pull the third handle 831 to pull the drying chamber 803 out of the mounting plate 806, after which the desiccant 807 can be replaced.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood 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 the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure swing adsorption nitrogen generator with filtration effect, comprising a base (1), an oxygen generator (2), and a filter box (6), characterized in that: The filter box (6) is equipped with a filter mechanism (8); The filtration mechanism (8) includes a first filter screen (801) and a second filter screen (802). The filter box (6) is provided with a slide rail (804) that slides and overlaps with the first filter screen (801) and the second filter screen (802). The filter box (6) is provided with a cleaning port (805). A first sealing plate (811) is slidably connected inside the cleaning port (805). A connecting rod (812) is fixedly connected to one side of the first sealing plate (811). A connecting plate (813) is fixedly connected to one end of the connecting rod (812). A brush (814) is fixedly provided at the bottom of the connecting plate (813). A buckle plate (815) is rotatably provided on the other side of the first sealing plate (811). An installation post (816) that is fastened to the buckle plate (815) is fixedly provided on the filter box (6). A second sealing plate (818) is fixedly connected to one end of the first filter screen (801) and the second filter screen (802). Insert blocks (820) are fixedly provided at both ends of the second sealing plate (818). A fixing hole (821) is provided on the insert block (820). A fixing recess (822) is fixedly provided on the filter box (6). A slot (826) is provided inside the fixing recess (822). A cylinder (823) is fixedly provided at the bottom of the fixing recess (822). A slider (824) is slidably connected inside the cylinder (823). A locking rod (825) is fixedly installed on the slider (824). The locking rod (825) slides through the cylinder (823) and passes through the fixing hole (821) to engage with the locking groove (826). A guide rod (827) is fixedly installed at the bottom of the slider (824). A spring (828) is sleeved on the guide rod (827) and fixedly installed between the slider (824) and the cylinder (823). The bottom of the guide rod (827) slides through the cylinder (823) and is fixedly connected to a limiting block (829). A pull ring (830) is fixedly installed on the limiting block (829).

2. The pressure swing adsorption nitrogen generator with filtration effect according to claim 1, characterized in that: A first handle (817) is fixedly provided on the side of the first sealing plate (811) near the buckle plate (815), and a second handle (819) is fixedly provided on the side of the second sealing plate (818) near the insert block (820).

3. A pressure swing adsorption nitrogen generator with filtration effect according to claim 1, characterized in that: A drying chamber (803) is provided between the first filter (801) and the second filter (802), and a desiccant (807) is provided inside the drying chamber (803).

4. A pressure swing adsorption nitrogen generator with filtration effect according to claim 3, characterized in that: The filter box (6) has an installation port for installing the drying box (803), and a mounting plate (806) is fixedly installed inside the filter box (6). The drying box (803) is slidably connected to the mounting plate (806).

5. A pressure swing adsorption nitrogen generator with filtration effect according to claim 4, characterized in that: The drying box (803) is fixedly provided with a mounting plate (808) at one end near the mounting port. A fixing bolt (809) is inserted into the mounting plate (808). The filter box (6) is provided with a fixing screw hole (810) that is threadedly connected to the fixing bolt (809). A third pull handle (831) is fixedly provided on the mounting plate (808).

6. A pressure swing adsorption nitrogen generator with filtration effect according to claim 1, characterized in that: The oxygen generator (2) and the filter box (6) are both fixedly mounted on the base (1). An air inlet pipe (7) is connected to the filter box (6). A connecting pipe (3) is connected between the oxygen generators (2). A transmission pipe (5) is connected between the connecting pipe (3) and the filter box (6). An exhaust pipe (4) is connected to the oxygen generator (2).

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