Efficient molecular sieve adsorption tower switching device of nitrogen making machine

Abstract

The utility model discloses an efficient molecular sieve adsorption tower switching device of a nitrogen making machine, which relates to the technical field of nitrogen making machines and comprises a switching main body shell, one side of the switching main body shell is fixedly connected with an air inlet pipe in a penetrating manner, and the other side of the switching main body shell is fixedly connected with two groups of adsorption tower shunt pipes; a servo motor is fixedly connected to the outer side wall of the switching main body shell, two sets of corrugated pipes are fixedly connected to the position, close to the switching main body shell, of the air inlet pipe in a penetrating mode, connecting pipes are fixedly connected to the other ends of the two sets of corrugated pipes, and air outlet nozzles are fixedly connected to the other ends of the two sets of connecting pipes; a worker installs the product provided by the utility model on a switching position of two groups of adsorption towers on a nitrogen making machine and then works, the servo motor is controlled through the PLC (not shown in the figure), and when air intake of one group of adsorption towers is completed and air intake needs to be carried out, the PLC controls the servo motor to rotate.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen generator technology, specifically a switching device for a high-efficiency molecular sieve adsorption tower in a nitrogen generator. Background Technology

[0002] The high-efficiency molecular sieve adsorption tower switching device for nitrogen generators ensures efficient separation and continuous supply of nitrogen by controlling the switching of adsorption towers. During nitrogen production, molecular sieves separate nitrogen by adsorbing oxygen and moisture from the air. Due to the limited adsorption capacity of molecular sieves, the adsorption towers need to be switched periodically; one tower adsorbs nitrogen while the other regenerates (releasing adsorbed oxygen and moisture). By controlling the switching device, the two adsorption towers can work alternately, avoiding downtime when only one tower is operating. This ensures continuous nitrogen production and guarantees the stability and efficiency of the nitrogen supply. The high-efficiency molecular sieve adsorption tower switching device for nitrogen generators plays a crucial role in improving nitrogen purity, production efficiency, and equipment lifespan.

[0003] The above-mentioned utility model has the following problems:

[0004] 1. In the existing technology, the switching device in the high-efficiency molecular sieve adsorption tower of the nitrogen generator uses a rotary table to reciprocate and connect the pipelines of the two molecular sieve adsorption towers. The rotary table has poor sealing during rotation, and the switching device is prone to leakage after long-term use.

[0005] Therefore, those skilled in the art have provided a switching device for a high-efficiency molecular sieve adsorption tower in a nitrogen generator to solve the problems mentioned in the background art. Utility Model Content

[0006] The purpose of this invention is to provide a high-efficiency molecular sieve adsorption tower switching device for a nitrogen generator, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A high-efficiency molecular sieve adsorption tower switching device for a nitrogen generator includes a switching main shell. An air inlet pipe is fixedly connected to one side of the switching main shell, and two sets of adsorption tower distribution pipes are fixedly connected to the other side of the switching main shell. A servo motor is fixedly connected to the outer wall of the switching main shell.

[0009] As a further embodiment of this utility model: two sets of corrugated pipes are fixedly connected through the air intake pipe near the outer shell of the switching main body, and a connecting pipe is fixedly connected to the other end of each set of corrugated pipes, and an air outlet is fixedly connected to the other end of each set of connecting pipes.

[0010] As a further embodiment of this utility model: the inner wall of the switching main body shell is fixedly connected to the two sets of adsorption tower diversion pipes, and the other set of the two sets of air inlets is fixedly connected to the inner cavity of the adsorption tower diversion pipe. The two sets of air outlets and the two sets of air inlets are used in cooperation with each other.

[0011] As a further embodiment of this utility model: racks are fixedly connected to the sides of the two sets of connecting pipes that are close to each other, and gears are fixedly connected to the output end of the servo motor. The output end of the servo motor moves through the outer shell of the switching main body, and the gears and the two sets of racks are meshed with each other.

[0012] As a further improvement of this utility model: one side of each of the two sets of connecting pipes is fixedly connected to an auxiliary telescopic rod, the other end of each of the two sets of auxiliary telescopic rods is fixedly connected to an air inlet pipe, and a sliding groove is opened on the inner wall of one end of each of the two sets of air outlets, and two sets of sliders are slidably connected to the inner side of each of the two sets of sliding grooves.

[0013] As a further improvement of this utility model: springs are fixedly connected to one side of each of the four sets of sliders, and the four sets of springs are in a spring-extended state by default. The other ends of the four sets of springs are fixedly connected to the inner wall of the slide groove.

[0014] As a further embodiment of this utility model: the inner wall of the air inlet is fixedly connected with a protrusion, and a one-way air inlet valve is fixedly connected to the inner wall of the air inlet near the protrusion. A set of protrusions and two sets of sliders are used in cooperation with each other.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. Traditional nitrogen generator high-efficiency molecular sieve adsorption tower switching devices often suffer from leakage problems after long-term use due to poor sealing when using a rotary table for reciprocating rotation. However, this utility model places the switching device inside the switching main body shell for switching, and then seals both ends of the switching main body shell. Switching is carried out through an outlet and an inlet, with a one-way inlet valve for assistance, thereby effectively improving the sealing performance during the switching process, avoiding leakage, and ensuring a stable supply of nitrogen.

[0017] 2. This utility model, through a servo motor and rack and pinion mechanism, can precisely control the movement of two sets of connecting pipes, ensuring a smooth and reliable switching process between adsorption towers. It also achieves precise control during the air intake and shutdown processes of the adsorption towers. The PLC control system of the servo motor can automatically adjust the switching action as needed, improving the automation and production efficiency of the equipment.

[0018] 3. Improved equipment durability and reduced maintenance costs: Compared to the traditional rotary switching method, the switching device of this invention uses a variety of wear-resistant components such as bellows, sliders, and springs, which can reduce mechanical wear and extend the service life of the equipment. Especially during long-term operation, it reduces air leakage caused by poor sealing, thereby reducing the frequency of equipment maintenance and lowering maintenance costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a switching device for a high-efficiency molecular sieve adsorption tower in a nitrogen generator.

[0020] Figure 2 This is a cross-sectional schematic diagram of a switching device for a high-efficiency molecular sieve adsorption tower in a nitrogen generator.

[0021] Figure 3 A switching device for a high-efficiency molecular sieve adsorption tower in a nitrogen generator. Figure 2 A magnified schematic diagram of the structure of A in the middle.

[0022] Figure 4 A switching device for a high-efficiency molecular sieve adsorption tower in a nitrogen generator. Figure 2 A magnified schematic diagram of the structure of B in the middle.

[0023] In the diagram: 1. Switching main body shell, 2. Air inlet pipe, 3. Adsorption tower diversion pipe, 4. Servo motor, 5. Corrugated pipe, 6. Connecting pipe, 7. Air outlet, 8. Air inlet, 9. Rack, 11. Gear, 12. Auxiliary telescopic rod, 13. Slide groove, 14. Slider, 15. Spring, 16. One-way air inlet valve, 17. Protrusion. Detailed Implementation

[0024] 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.

[0025] Example 1

[0026] Reference Figure 1 , 23. This embodiment provides a high-efficiency molecular sieve adsorption tower switching device for a nitrogen generator, including a switching main body shell 1. An inlet pipe 2 is fixedly connected to one side of the switching main body shell 1, and two sets of adsorption tower distribution pipes 3 are fixedly connected to the other side of the switching main body shell 1. A servo motor 4 is fixedly connected to the outer wall of the switching main body shell 1. Two sets of corrugated pipes 5 are fixedly connected to the inlet pipe 2 near the switching main body shell 1. A connecting pipe 6 is fixedly connected to the other end of each of the two sets of corrugated pipes 5, and an outlet nozzle 7 is fixedly connected to the other end of each of the two sets of connecting pipes 6. Air inlets 8 are fixedly connected to the inner wall of shell 1 near the two sets of adsorption tower distribution pipes 3. The other sets of air inlets 8 are also fixedly connected to the inner cavity of the adsorption tower distribution pipes 3. The two sets of air outlets 7 and the two sets of air inlets 8 cooperate with each other. Racks 9 are fixedly connected to the sides of the two sets of connecting pipes 6. A gear 11 is fixedly connected to the output end of the servo motor 4, and the output end of the servo motor 4 movably passes through the switching main shell 1. The gear 11 and the two sets of racks 9 mesh with each other. An auxiliary telescopic rod 12 is fixedly connected to one side of each set of connecting pipes 6. The other ends of both sets of auxiliary telescopic rods 12 are fixedly connected to the air inlet pipe 2. The operator installs the product of this utility model at the switching position of the two sets of adsorption towers on the nitrogen generator, and then begins operation. The servo motor is controlled by a PLC (not shown). When one set of adsorption towers has finished inhaling air and needs to stop inhaling, and the other set of adsorption towers has finished inhaling air and needs to start inhaling, the PLC controls the servo motor to rotate. The servo motor drives the output end to rotate, which in turn drives the gear to rotate. The gear drives the rack on one side of the adsorption tower that needs to be shut down to move upwards, and the rack drives... The fixed connecting pipe moves upward, causing the rack on one side of the adsorption tower that needs air intake to move downward. The rack causes the fixed connecting pipe to move downward. The corrugated pipes at one end of the two sets of connecting pipes are adjusted according to one end of the connecting pipe. The two sets of auxiliary telescopic rods move with the two sets of connecting pipes respectively, limiting the movement of the connecting pipes. Thus, when the adsorption tower needs to intake air, the connecting pipe drives the outlet nozzle (rectangular shape) into the inlet nozzle (rectangular shape), allowing the gas to enter the adsorption tower. When the adsorption tower needs to stop intake air, the connecting pipe drives the outlet nozzle to separate from the inlet nozzle.

[0027] Example 2

[0028] Reference Figure 1 , 4This embodiment is based on the previous embodiment, but differs in that each of the two sets of air outlets 7 has a groove 13 on one end of its inner wall. Two sets of sliders 14 are slidably connected to the inner side of each of the two sets of grooves 13. Springs 15 are fixedly connected to one side of each of the four sets of sliders 14, which are in a default extended state. The other ends of the four sets of springs 15 are fixedly connected to the inner wall of the grooves 13. A protrusion 17 is fixedly connected to the inner wall of the air inlet 8. A one-way air inlet valve 16 is fixedly connected to the inner wall of the air inlet 8 near the protrusion 17. One set of protrusions 17 and two sets of sliders 14... 4. They work together: When the air outlet (rectangular shape) approaches the air inlet (rectangular shape), the protrusion of the air inlet pushes the two sets of sliders of the air outlet to the sides. The two sets of sliders slide in the groove, and the two sets of sliders compress the springs on both sides respectively. The air outlet opens, and the gas enters the air inlet through the air outlet. The air inlet is equipped with a one-way air inlet valve so that the gas entering the air inlet will not flow backward. When the air intake is completed, the air outlet and the air inlet separate. The springs on both sides release their elastic force and drive the sliders on both sides to move and close in the groove, thereby closing the air outlet.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-efficiency molecular sieve adsorption tower switching device for a nitrogen generator, comprising a switching main body shell (1), characterized in that, The side position of the switching body shell (1) is fixedly connected with the air inlet pipe (2), the other side position of the switching body shell (1) is fixedly connected with two groups of adsorption tower shunt pipes (3), the outer side wall of the switching body shell (1) is fixedly connected with the servo motor (4), the position close to the switching body shell (1) of the air inlet pipe (2) is fixedly connected with two groups of corrugated pipes (5), the other end of the two groups of corrugated pipes (5) is fixedly connected with the connecting pipe (6), the other end of the two groups of connecting pipes (6) is fixedly connected with the air outlet nozzle (7), the inner wall of the switching body shell (1) close to the position of the two groups of adsorption tower shunt pipes (3) is fixedly connected with the air inlet nozzle (8), and the other group of the two groups of air inlet nozzles (8) is fixedly connected in the inner cavity of the adsorption tower shunt pipe (3), the two groups of air outlet nozzles (7) and the two groups of air inlet nozzles (8) are used in cooperation.

2. The high-efficiency molecular sieve adsorption column switching device of a nitrogen generator according to claim 1, characterized in that, The side position close to the two groups of connecting pipes (6) is fixedly connected with the rack (9), the output end of the servo motor (4) is fixedly connected with the gear (11), and the output end of the servo motor (4) is movably connected with the switching body shell (1), the gear (11) and the two groups of racks (9) are movably connected.

3. The high-efficiency molecular sieve adsorption column switching device of a nitrogen generator according to claim 1, characterized in that, The side of the two groups of connecting pipes (6) is fixedly connected with the auxiliary telescopic rod (12), and the other end of the two groups of auxiliary telescopic rods (12) is fixedly connected to the air inlet pipe (2).

4. The high-efficiency molecular sieve adsorption column switching device of a nitrogen generator according to claim 1, characterized in that, The inner wall of one end of the two groups of air outlet nozzles (7) is provided with the sliding groove (13), and the inner side of the two groups of sliding grooves (13) is slidably connected with the two groups of sliding blocks (14).

5. The high efficiency molecular sieve adsorbent bed switching device of a nitrogen generator of claim 4, wherein, The side position of the four groups of sliding blocks (14) is fixedly connected with the spring (15), and the four groups of springs (15) are in the default state of elastic extension, and the other end of the four groups of springs (15) is fixedly connected to the inner wall position of the sliding groove (13).

6. The high efficiency molecular sieve adsorbent bed switching device of a nitrogen generator of claim 1, wherein, The inner wall of the air inlet nozzle (8) is fixedly connected with the protruding block (17), and the inner wall of the air inlet nozzle (8) close to the protruding block (17) is fixedly connected with the one-way air inlet valve (16).

7. The high-efficiency molecular sieve adsorption column switching device of a nitrogen generator according to claim 6, characterized in that, The one group of protruding blocks (17) and the two groups of sliding blocks (14) are used in cooperation.

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