Filter for nitrogen purification

Abstract

The utility model relates to the technical field of nitrogen filters, in particular to a filter for nitrogen purification, which comprises a tank body, a tank cover for blocking is assembled on the surface of the top end of the tank body through bolts, and electromagnetic valves for controlling opening and closing are assembled at the gas inlet end of the top of the tank cover and the gas outlet end of the periphery of the tank body; when the filter element body in one vertical hole needs to be replaced, the stop valve between the vertical hole and the flow dividing pipe can operate and block the channel at the position, then the vertical hole is in a closed state due to the check valve at the communicating position of the vertical hole and the tank body, and then the filter element body can be replaced only by rotating the surface of the tank cover to block the disc cover of the vertical hole at the position. The disc cover is more convenient to disassemble through the ring seat at the top of the disc cover, then the barrel seat screwed in the vertical hole can be disassembled, the filter element body in the barrel seat can be replaced, reverse operation is convenient to install, meanwhile, the filter element body at the position can be continuously used only by removing blocking of the stop valve, and nitrogen can be conveniently filtered.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen filter technology, specifically to a filter for nitrogen purification. Background Technology

[0002] Chemical production enterprises often use molecular sieve air separation to produce nitrogen to meet their needs. Molecular sieves act as adsorbents, selectively adsorbing oxygen and nitrogen using carbon molecular sieves to separate them, thus achieving nitrogen production. Patent CN202322541855.2 discloses a filter for nitrogen preparation and purification, which features a removable filter element for easy replacement and dosage adjustment. Specifically, the lower surface of the top cover has several fixing grooves, allowing adjustment of the number of filter elements as needed, and a window allows observation of the filter element's condition for timely replacement. However, when using this filter for nitrogen purification, replacing the filter element requires stopping the equipment to disassemble and replace the element inside the tank, which is inconvenient. Therefore, we propose a filter for nitrogen purification. Utility Model Content

[0003] To address the problems in the existing technology, this utility model provides a filter for nitrogen purification.

[0004] The technical solution adopted by this utility model to solve its technical problem is a nitrogen purification filter, including a tank body. The top surface of the tank body is bolted with a tank cover for sealing. Both the air inlet end of the top of the tank cover and the air outlet end of the tank body are equipped with solenoid valves for controlling opening and closing. A diverter pipe connected to the air inlet end of the tank cover is installed on the side of the tank cover located inside the tank body. The tank cover is provided with vertical holes, and there are multiple sets of vertical holes. A shut-off valve for controlling opening and closing is installed between the air inlet end of the vertical hole and the air outlet end of the diverter pipe. A cylinder seat for support is screwed into the inside of the vertical hole. A filter element for nitrogen filtration is installed in the cylinder seat. A check valve connected to the vertical hole is installed on the bottom surface of the tank cover, and there are multiple sets of check valves.

[0005] The top surface of the can lid is screwed with a disc cover for sealing the vertical hole, and there are multiple sets of disc covers. The top surface of the disc cover is integrally constructed with a ring seat for rotation. The end of the disc cover near the can lid is glued with a rubber ring for preventing leakage.

[0006] By adopting the above technical solution, during the use of the filter for nitrogen purification, the solenoid valve on the surface of the tank cover can be opened, allowing nitrogen to enter the diversion pipe inside the tank cover. The shut-off valve at the corresponding position of the diversion pipe opens, allowing nitrogen to enter the vertical hole. The filter element inside the cylinder seat in the vertical hole can filter the nitrogen. The filtered nitrogen can easily pass through the check valve into the tank body, and the solenoid valve at the outlet of the tank body can be opened, allowing the filtered nitrogen to be discharged. The multiple sets of shut-off valves on the outer periphery of the diversion pipe and the filter elements in the multiple sets of vertical holes inside the pipe cover can work together to facilitate the periodic switching of the vertical holes at the corresponding positions for nitrogen diversion and filtration, or the simultaneous opening of multiple sets of shut-off valves can improve the efficiency of nitrogen filtration.

[0007] When the filter element in a vertical hole needs to be replaced, the shut-off valve between the vertical hole and the diverter pipe can be activated to block the passage. Then, due to the check valve at the connection between the vertical hole and the tank body, the vertical hole is now closed. Then, simply rotate the disc cover that blocks the vertical hole on the surface of the tank cover. The ring seat on the top of the disc cover makes it easier to remove. Then, the screw-on cylinder seat in the vertical hole can be removed, and the filter element inside the cylinder seat can be replaced. The reverse operation is convenient for installation. At the same time, simply unblocking the shut-off valve allows the filter element at this location to continue to be used, facilitating the filtration of nitrogen.

[0008] Specifically, a shock absorber is fitted at one end of the disc cover located inside the vertical hole, and an arc-shaped plate for buffering is fitted at the other end of the shock absorber away from the disc cover. A spring located on the outer periphery of the shock absorber is fitted between the arc-shaped plate and the disc cover.

[0009] By adopting the above technical solution, the spring and the shock absorber work together to provide elastic thrust to the arc plate, and the nitrogen gas entering the vertical hole can be buffered when it impacts the arc plate, so that the nitrogen gas can enter the filter element body stably and be easily filtered.

[0010] Specifically, a corrugated rubber sleeve located on the outer periphery of the spring is fitted between the arc-shaped plate and the disc cover.

[0011] By adopting the above technical solution, the corrugated rubber sleeve is easy to extend and retract and can protect the operation of the spring, so that the spring and the shock absorber can stably provide buffering force for the curved plate.

[0012] Specifically, the end of the can lid located inside the can body is fitted with a baffle located on the outer periphery of the diversion pipe.

[0013] By adopting the above technical solution, the baffle can provide auxiliary protection for the diversion pipe and the shut-off valve, thereby improving their stability during use.

[0014] Specifically, the bottom surface of the cylinder base is fitted with a filter screen plate for auxiliary support.

[0015] By adopting the above technical solution, the filter plate can provide certain auxiliary support for the filter element inside the cylinder, so that the filter element can be installed more stably inside the cylinder.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The technical solution of this application, through the design of a tank cover, vertical holes, a distribution pipe, a solenoid valve, a shut-off valve, a cylinder seat, and a filter element, allows the solenoid valve on the surface of the tank cover to open during the use of the filter for nitrogen purification, enabling nitrogen to enter the distribution pipe inside the tank cover. The shut-off valve at the corresponding position on the distribution pipe opens, allowing nitrogen to enter the vertical holes. The filter element inside the cylinder seat in the vertical holes filters the nitrogen, and the filtered nitrogen easily passes through the check valve into the tank body, opening the solenoid valve at the tank outlet and allowing the filtered nitrogen to be discharged. Furthermore, the multiple shut-off valves on the outer periphery of the distribution pipe and the filter elements in the multiple vertical holes inside the pipe cover can work together, facilitating the periodic switching of the vertical holes at corresponding positions for nitrogen flow filtration, or allowing multiple shut-off valves to open simultaneously, thus improving the efficiency of nitrogen filtration.

[0018] 2. The technical solution of this application, through the design of a check valve, disc cover, ring seat, and rubber ring, allows the shut-off valve between the vertical hole and the diversion pipe to operate and block the channel when the filter element in a vertical hole needs to be replaced. Then, due to the check valve at the connection between the vertical hole and the tank body, the vertical hole is in a closed state. Then, simply rotate the disc cover that blocks the vertical hole on the surface of the tank cover. The ring seat on the top of the disc cover makes the disc cover easier to disassemble. Then, the screw-on cylinder seat in the vertical hole can be disassembled, and the filter element inside the cylinder seat can be replaced. The reverse operation is convenient for installation. At the same time, simply unblocking the shut-off valve allows the filter element in this location to continue to be used, which is convenient for filtering nitrogen. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is an isometric view of the present invention;

[0021] Figure 2 This is a schematic plan view of the inner side structure of the tank of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure at point A on the inner side of the can lid of this utility model;

[0023] In the diagram: 1. Tank body; 2. Tank cover; 3. Solenoid valve; 4. Diverter pipe; 5. Vertical hole; 6. Gate valve; 7. Cylinder seat; 8. Filter screen plate; 9. Filter element body; 10. Check valve; 11. Disc cover; 12. Ring seat; 13. Rubber ring; 14. Shock absorber; 15. Arc plate; 16. Spring; 17. Corrugated rubber sleeve; 18. Baffle. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] Please see Figure 1-3 This utility model provides a technical solution: a filter for nitrogen purification, including a tank body 1. A tank cover 2 for sealing is bolted to the top surface of the tank body 1. Both the air inlet end of the tank cover 2 and the air outlet end on the outer periphery of the tank body 1 are equipped with solenoid valves 3 for controlling opening and closing. A diverter pipe 4 connected to the air inlet end of the tank cover 2 is installed on the side of the tank cover 2 inside the tank body 1. Vertical holes 5 are provided inside the tank cover 2, and there are multiple sets of vertical holes 5. A control valve 3 is installed between the air inlet end of the vertical hole 5 and the air outlet end of the diverter pipe 4. The valve 6 is a shut-off valve that controls opening and closing. A cylinder seat 7 for support is screwed into the inner side of the vertical hole 5, and a filter element 9 for nitrogen filtration is installed inside the cylinder seat 7. A check valve 10 connected to the vertical hole 5 is installed on the bottom surface of the canister cover 2, and there are multiple sets of check valves 10. A disc cover 11 for sealing the vertical hole 5 is screwed into the top surface of the canister cover 2, and there are multiple sets of disc covers 11. A ring seat 12 for rotation is integrally constructed on the top surface of the disc cover 11, and a rubber ring 13 for leak prevention is glued to the end of the disc cover 11 near the canister cover 2.

[0026] During use, when using the filter for nitrogen purification, the solenoid valve 3 on the surface of the tank cover 2 can be opened, allowing nitrogen to enter the diversion pipe 4 inside the tank cover 2. The shut-off valve 6 at the corresponding position of the diversion pipe 4 is opened, allowing nitrogen to enter the vertical hole 5. The filter element 9 inside the cylinder seat 7 in the vertical hole 5 can filter the nitrogen. The filtered nitrogen can easily pass through the check valve 10 and enter the tank body 1, causing the solenoid valve 3 at the outlet of the tank body 1 to open, allowing the filtered nitrogen to be discharged. The multiple sets of shut-off valves 6 on the outer periphery of the diversion pipe 4 and the multiple sets of filter elements 9 in the vertical holes 5 inside the pipe cover can work together to facilitate the periodic switching of the vertical holes 5 at the corresponding positions for nitrogen diversion and filtration, or the simultaneous opening of multiple sets of shut-off valves 6 can improve the efficiency of nitrogen filtration.

[0027] When the filter element 9 in a vertical hole 5 needs to be replaced, the shut-off valve 6 between the vertical hole 5 and the diversion pipe 4 can be activated to block the passage. Then, due to the check valve 10 at the connection between the vertical hole 5 and the tank body 1, the vertical hole 5 is now closed. Then, simply rotate the disc cover 11 that blocks the vertical hole 5 on the surface of the tank cover 2. The ring seat 12 on the top of the disc cover 11 makes it easier to disassemble the disc cover 11. Then, the screw-on cylinder seat 7 in the vertical hole 5 can be disassembled, and the filter element 9 inside the cylinder seat 7 can be replaced. The reverse operation is convenient for installation. At the same time, simply release the seal of the shut-off valve 6 to continue using the filter element 9, which is convenient for filtering nitrogen.

[0028] like Figure 2 and Figure 3 As shown, a shock absorber 14 is fitted at one end of the disc cover 11 located in the vertical hole 5, and an arc-shaped plate 15 for buffering is fitted at the other end of the shock absorber 14 away from the disc cover 11. A spring 16 located on the outer periphery of the shock absorber 14 is fitted between the arc-shaped plate 15 and the disc cover 11.

[0029] In use, the spring 16 and the shock absorber 14 work together to provide elastic thrust to the arc plate 15, and the nitrogen gas entering the vertical hole 5 can be buffered when it impacts the arc plate 15, so that the nitrogen gas can enter the filter element body 9 stably and be filtered.

[0030] like Figure 2 and Figure 3 As shown, a corrugated rubber sleeve 17 located on the outer periphery of the spring 16 is assembled between the arc plate 15 and the disc cover 11.

[0031] When in use, the corrugated rubber sleeve 17 is easy to extend and retract and can protect the operation of the spring 16, so that the spring 16 and the shock absorber 14 can stably provide buffering force for the arc plate 15.

[0032] like Figure 2 As shown, the end of the can lid 2 located inside the can body 1 is equipped with a baffle 18 located on the outer periphery of the diversion pipe 4.

[0033] When in use, the baffle 18 provides auxiliary protection for the diversion pipe 4 and the shut-off valve 6, which helps to improve their stability during use.

[0034] like Figure 2 and Figure 3 As shown, a filter screen plate 8 for auxiliary support is assembled on the bottom surface of the cylinder base 7.

[0035] During use, the filter plate 8 provides auxiliary support for the filter element 9 inside the cylinder seat 7, allowing the filter element 9 to be installed more stably inside the cylinder seat 7.

[0036] The working principle and usage process of this utility model are as follows: In use, first install the corresponding structural components in appropriate positions. During the use of the filter for nitrogen purification, the solenoid valve 3 on the surface of the tank cover 2 opens, allowing nitrogen to enter the diversion pipe 4 inside the tank cover 2. The shut-off valve 6 at the corresponding position of the diversion pipe 4 opens, allowing nitrogen to enter the vertical hole 5. The filter element 9 inside the cylinder seat 7 in the vertical hole 5 filters the nitrogen. The filtered nitrogen easily passes through the check valve 10 into the tank body 1, causing the solenoid valve 3 at the outlet of the tank body 1 to open, allowing the filtered nitrogen to be discharged. Furthermore, the multiple sets of shut-off valves 6 on the outer periphery of the diversion pipe 4 and the multiple sets of filter elements 9 in the vertical holes 5 inside the pipe cover can work together, facilitating the periodic switching of the vertical holes 5 at the corresponding positions to allow nitrogen to enter. The flow-directing filtration, or the simultaneous opening of multiple sets of shut-off valves 6, can improve the filtration efficiency of nitrogen. When the filter element 9 in a vertical hole 5 needs to be replaced, the shut-off valve 6 between the vertical hole 5 and the diversion pipe 4 can be activated to block the channel. Then, due to the check valve 10 at the connection between the vertical hole 5 and the tank body 1, the vertical hole 5 is in a closed state. Then, simply rotate the disc cover 11 that blocks the vertical hole 5 on the surface of the tank cover 2. The ring seat 12 on the top of the disc cover 11 makes it easier to disassemble the disc cover 11. Then, the screw-on cylinder seat 7 in the vertical hole 5 can be disassembled, and the filter element 9 inside the cylinder seat 7 can be replaced. The reverse operation is convenient for installation. At the same time, simply release the seal of the shut-off valve 6 to continue using the filter element 9, which is convenient for filtering nitrogen.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A filter for nitrogen purification, characterized in that, The container includes a tank body (1), on which a tank cover (2) for sealing is bolted to the top surface of the tank body (1). Both the air inlet end of the top of the tank cover (2) and the air outlet end of the outer periphery of the tank body (1) are equipped with solenoid valves (3) for controlling opening and closing. The side of the tank cover (2) located inside the tank body (1) is equipped with a diverter pipe (4) connected to the air inlet end of the tank cover (2). The tank cover (2) has a vertical hole (5) inside, and there are multiple sets of vertical holes (5). A shut-off valve (6) for controlling opening and closing is installed between the air inlet end of the vertical hole (5) and the air outlet end of the diverter pipe (4). A cylinder seat (7) for support is screwed into the inside of the vertical hole (5). A filter element (9) for nitrogen filtration is installed inside the cylinder seat (7). A check valve (10) connected to the vertical hole (5) is installed on the bottom surface of the tank cover (2), and there are multiple sets of check valves (10). The top surface of the can lid (2) is screwed with a disc cover (11) for sealing the vertical hole (5), and there are multiple sets of disc covers (11). The top surface of the disc cover (11) is integrally constructed with a ring seat (12) for rotation. The end of the disc cover (11) near the can lid (2) is glued with a rubber ring (13) for leak prevention.

2. A filter for nitrogen purification according to claim 1, characterized in that, The end of the disc cover (11) located in the vertical hole (5) is equipped with a shock absorber (14), and the end of the shock absorber (14) away from the disc cover (11) is equipped with an arc-shaped plate (15) for buffering. A spring (16) located on the outer periphery of the shock absorber (14) is installed between the arc-shaped plate (15) and the disc cover (11).

3. A filter for nitrogen purification according to claim 2, characterized in that, A corrugated rubber sleeve (17) located on the outer periphery of the spring (16) is fitted between the arc plate (15) and the disc cover (11).

4. A filter for nitrogen purification according to claim 1, characterized in that, The end of the can lid (2) located inside the can body (1) is fitted with a baffle (18) located on the outer periphery of the diversion pipe (4).

5. A filter for nitrogen purification according to claim 1, characterized in that, The bottom surface of the cylinder base (7) is fitted with a filter screen plate (8) for auxiliary support.

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