Energy-saving type soft switching nitrogen generation equipment control method

Abstract

The invention relates to the technical field of nitrogen-making equipment, in particular to an energy-saving soft switching nitrogen-making equipment control method which comprises the following steps: S1, compressed air is sequentially introduced into two CBN nitrogen-making equipment, carbon molecular sieves in the CBN nitrogen-making equipment are used as adsorbents, and after the compressed air enters adsorbers in the CBN nitrogen-making equipment, the adsorbents in the CBN nitrogen-making equipment are used as adsorbents; pressurized adsorption and reduced-pressure desorption are carried out in an adsorber, and nitrogen is enriched in a gas phase to form nitrogen. According to the solid material filtering device, solid materials are influenced by centrifugal force, move outwards and fall into a limiting groove, so that the solid materials are discharged through a connecting square pipe and a material guide pipe, the connecting square pipe is blocked by a blocking block during filtering, gas is prevented from being discharged from the connecting square pipe, gas loss is reduced, and when the solid materials are discharged, the material guide pipe is hit by a rubber ball, and the solid materials are discharged. And a third supporting plate horizontally reciprocates up and down, so that solid objects can quickly fall off, the solid objects can be conveniently cleaned and recycled, and the situation that the gas passing rate is low, and the gas inlet efficiency is affected is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of nitrogen production equipment, and in particular to a control method for energy-saving soft-switching nitrogen production equipment. Background Art

[0002] Nitrogen generation equipment refers to machinery and systems that generate nitrogen from air, ammonia, or other nitrogen-rich feedstocks. Common nitrogen generation methods include adsorption, membrane separation, and cryogenic air separation. Nitrogen generation equipment can be categorized into various types, such as air separation units, pressure swing adsorption systems, membrane separation units, and cryogenic liquefaction systems, depending on their operating principles and application requirements. These equipment are widely used in industries such as healthcare, food, electronics, chemicals, metals, and energy, making them essential components of modern industry. They provide high-quality, efficient nitrogen supply to a wide range of industries, solving various gas-related challenges.

[0003] The air-to-nitrogen ratio of existing nitrogen production equipment at 99.9% purity is 3.4:1, that is, 3.4 parts of air produce 1 part of nitrogen, and the remaining 2.4 parts of air are discharged from the muffler through the switching of the AB tower. This consumes a lot of energy when producing nitrogen, and when filtering the air, solid matter will remain on the filter. If not cleaned in time, the gas flow rate will be low, affecting the air intake efficiency. Summary of the Invention

[0004] To this end, the present invention provides an energy-saving soft-switching nitrogen production equipment control method to solve the above-mentioned problems.

[0005] The present invention provides the following technical solution: an energy-saving soft switching nitrogen production equipment control method, comprising the following steps: S1. Compressed air is introduced into two CBN nitrogen generators in sequence. The carbon molecular sieve in the CBN nitrogen generator serves as an adsorbent. After the compressed air enters the adsorber in the CBN nitrogen generator, it is subjected to pressurized adsorption and decompression desorption in the adsorber. Nitrogen is enriched in the gas phase to form nitrogen gas. S2. The nitrogen gas after the primary treatment is passed through a pipeline into a dust fine filter, and the dust fine filter is used to filter out tiny particles, pollen, bacteria, industrial waste gas and dust in the nitrogen gas; S3. The finely filtered nitrogen is introduced into a nitrogen buffer tank for temporary storage of nitrogen; S4, passing the nitrogen in the nitrogen buffer tank into an activated carbon filter, and removing organic matter, soluble inorganic matter, residual chlorine, and odor in the nitrogen through the activated carbon; S5. The nitrogen filtered through the activated carbon is passed into the sterilizing filter for sterilization treatment; Each device is centrally controlled by a controller, which sets two cycles. When the device's gas outlet flow rate is between 450 cubic nanometers per hour and 900 cubic nanometers per hour and the stable output time is greater than 20 minutes, short-cycle operation is adopted. When the device's gas outlet flow rate is between 0 cubic nanometers per hour and 450 cubic nanometers per hour and the stable output time is greater than 20 minutes, long-cycle operation is adopted.

[0006] As a preferred solution of the present invention, the activated carbon filter includes a base, which is fixed to the ground by bolts, the top of the base is fixedly connected to a fixing frame, and the inner wall of the fixing frame is fixedly connected to a reaction tank.

[0007] As a preferred solution of the present invention, an air inlet is provided at the top of the reaction tank, and an air outlet is provided at the bottom of the reaction tank.

[0008] As a preferred solution of the present invention, the inner wall of the reaction tank is fixedly connected to a first support plate, the inner wall of the reaction tank is fixedly connected to a second support plate, the inner wall of the first support plate is rotatably connected to a first rotating rod, the surface of the first rotating rod is rotatably connected to the inner wall of the second support plate, the left side of the second support plate is fixedly connected to a U-shaped frame, the left and right sides of the interior of the reaction tank are fixedly connected to a material guide pipe, the bottom of the material guide pipe passes through the bottom of the reaction tank, a slide groove is penetrated through the front side of the material guide pipe, the groove wall of the slide groove is slidably connected to a concave plate, the top of the concave plate is fixedly connected to a third support plate, the bottom of the first support plate is fixedly connected to an electric motor, and the bottom of the first rotating rod is fixedly connected to the output end of the electric motor via a coupling.

[0009] As a preferred solution of the present invention, the inner wall of the concave plate is fixedly connected with a connecting square tube, the interior of the reaction tank is fixedly connected with a filter plate, the bottom of the third support plate is fixedly connected with a lifting plate, the surface of the lifting plate is slidably connected to the inner wall of the U-shaped frame, the top of the first rotating rod is fixedly connected with a cylindrical cam, the right side of the lifting plate is fixedly connected with a driven rod, the driven rod contacts the groove wall of the cylindrical cam, the top of the cylindrical cam is fixedly connected with a second rotating rod, the second rotating rod is located at the center of the third support plate and does not contact the third support plate, the top of the inside of the reaction tank is fixedly connected with a supporting ring, the surface of the connecting square tube is slidably connected to the inner wall of the guide tube, and limiting grooves are provided on both sides of the top of the filter plate, and the surface of the connecting square tube is slidably connected to the groove wall of the limiting groove.

[0010] As a preferred solution of the present invention, the top of the second rotating rod passes through the filter plate and is fixedly connected to a rubber brush, and the bottom of the rubber brush is in contact with the top of the filter plate.

[0011] As a preferred solution of the present invention, blocking blocks are fixedly connected to both the left and right sides of the bottom of the support ring, and the surfaces of the blocking blocks are slidably connected to the inner wall of the connecting square tube.

[0012] As a preferred solution of the present invention, a rotating ring is fixedly connected to the surface of the first rotating rod, a rope is fixedly connected to the surface of the rotating ring, one end of the rope is fixedly connected to a rubber ball, and the number of the ropes is three, and the three ropes are distributed in a circular array.

[0013] As a preferred solution of the present invention, the number of the concave plates is two, and the two concave plates are symmetrically distributed on the left and right.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the gas first enters the reaction tank through the air inlet, and the air outlet starts to pump air at this time, so that the gas passes through the filter plate to filter the gas. The filtered gas is pumped out through the air outlet and enters the next process. After the air pumping is completed, there is no gas inside the air outlet. The electric motor is started by the controller, and the electric motor drives the first rotating rod to rotate. The first rotating rod drives the rope and the rubber ball to rotate, so that the rubber ball hits the guide pipe, causing the guide pipe to vibrate, thereby preventing solid objects from adhering to the inner wall of the guide pipe. At this time, the first rotating rod drives the cylindrical cam to rotate, and the U-shaped frame is limited, so that the driven rod drives the lifting plate to move upward. This drives the third support plate to move back and forth horizontally, and the first rotating rod drives the second rotating rod to rotate, causing the rubber brush to rotate, thereby causing the rubber brush to sweep the solid matter on the filter plate. The solid matter is affected by centrifugal force, moves outward, and falls into the limit groove, so that the solid matter is discharged through the connecting square tube and the guide tube. Since the connecting square tube is blocked by the block during filtering, gas is prevented from being discharged from the connecting square tube, thereby reducing gas loss. When the solid matter is discharged, it hits the guide tube through the rubber ball, and the third support plate moves back and forth horizontally, so that the solid matter can fall quickly, which is convenient for cleaning and recycling of the solid matter, avoiding a low gas passage rate and affecting the air intake efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall control flow of this application; Figure 2 for Figure 1 Enlarged view of the left part; Figure 3 for Figure 1 Enlarged view of the right part; Figure 4 A perspective view of the activated carbon filter in this application; Figure 5 is a cross-sectional view of the activated carbon filter in this application; Figure 6This is an exploded view of the internal structure of the reaction tank in this application; Figure 7 for Figure 5 A magnified view of middle A; Figure 8 for Figure 5 Enlarged view of middle B; Figure 9 for Figure 6 Enlarged view of C in the middle.

[0016] In the figure: 1. CBN nitrogen generator; 2. Dust fine filter; 3. Nitrogen buffer tank; 4. Activated carbon filter; 5. Sterilizing filter; 6. Controller; 401. Base; 402. Fixing bracket; 403. Reactor; 404. Air inlet; 405. Air outlet; 406. Material guide pipe; 407. First support plate; 408. Second support plate; 409. First rotating rod; 410. U-shaped frame; 411. Rotating ring; 412. Rope; 413. Rubber ball; 414. Lifting plate; 415. Follower rod; 416. Cylindrical cam; 417. Second rotating rod; 418. Rubber brush; 419. Filter plate; 420. Limiting groove; 421. Third support plate; 422. Block; 423. Support ring; 424. Connecting square tube; 425. Slide; 426. Concave plate. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-9 The technical solution provided by the present invention specifically includes the following embodiments: Example: The energy-saving soft switching nitrogen production equipment control method includes the following steps: S1. Compressed air is introduced into two CBN nitrogen generators 1 in sequence. The carbon molecular sieve in the CBN nitrogen generator 1 serves as an adsorbent. After the compressed air enters the adsorber in the CBN nitrogen generator 1, it is subjected to pressurized adsorption and decompression desorption in the adsorber. Nitrogen is enriched in the gas phase to form nitrogen gas. S2. The nitrogen gas after the initial treatment is passed through a pipeline into the dust fine filter 2, and the dust fine filter 2 filters the tiny particles, pollen, bacteria, industrial waste gas and dust in the nitrogen gas; S3, the nitrogen after fine filtration is introduced into the nitrogen buffer tank 3 for temporary storage of nitrogen; S4, passing the nitrogen in the nitrogen buffer tank 3 into the activated carbon filter 4, and removing organic matter, soluble inorganic matter, residual chlorine and odor in the nitrogen through the activated carbon; S5, the nitrogen filtered through the activated carbon is passed into the sterilizing filter 5 for sterilization treatment; Each device is centrally controlled by the controller 6, which sets two cycles. When the device's gas outlet flow rate is between 450 cubic nanometers per hour and 900 cubic nanometers per hour and the stable output time is greater than 20 minutes, a short cycle operation is adopted. When the device's gas outlet flow rate is between 0 cubic nanometers per hour and 450 cubic nanometers per hour and the stable output time is greater than 20 minutes, a long cycle operation is adopted.

[0019] In step S1, the intake requirements of compressed air are: dew point: ≤-40℃, dust particle size: ≤0.01um, oil content: oil-free, intake pressure: 0.75MPa. Both CBN nitrogen generators 1 are provided with pressure gauges for displaying the pressure inside the CBN nitrogen generator 1 to ensure safety. The intake pipe of the CBN nitrogen generator 1 and the connecting pipe between the CBN nitrogen generator 1 and the dust fine filter 2 are provided with pneumatic valves. The pneumatic valves can use compressed air to quickly and accurately control the flow direction, flow rate and pressure of the fluid medium in the pipeline. By accurately controlling the flow rate, on-off and direction of the compressed air, the pneumatic actuator can be realized. Precise control of the mechanism and the use of pneumatic valves can reduce manual operation, reduce human errors, improve the level of production automation, and thus improve product quality and production efficiency. Compared with traditional manual valves, pneumatic valves have faster and more accurate response characteristics, which helps to optimize energy consumption, reduce operating costs, and have better energy-saving effects. A stop valve is also provided on the air inlet pipe of the CBN nitrogen production equipment 1 to control the flow of nitrogen in the pipeline. A stop valve is provided on the air inlet port of the dust fine filter 2. A differential pressure gauge is installed on the dust fine filter 2 to measure the pressure at different positions of the dust fine filter 2, further improving the safety of the equipment. A safety valve is installed on the nitrogen buffer tank 3 And a pressure gauge, the pressure gauge is used to monitor the pressure in the nitrogen buffer tank 3 in real time, and release the air through the safety valve when the pressure is too high. Two stop valves, a pneumatic valve and a check valve are sequentially arranged on the connecting pipeline between the nitrogen buffer tank 3 and the activated carbon filter 4. A flow meter is arranged on the pipeline between the two stop valves. A pressure gauge is installed on the stop valve close to the nitrogen buffer tank 3. The pressure gauge is connected to the controller 6 through a pressure signal output line, so that the controller 6 can continuously monitor the pipeline pressure, and it is convenient to control the stop valve operation in time when an abnormality occurs. The flow meter is connected to the controller 6 through a flow signal output line to detect the nitrogen flow rate, which is convenient for mode adjustment. In addition, a temperature sensor and a purity sampling pipeline are also provided on the connecting pipeline between the nitrogen buffer tank 3 and the activated carbon filter 4. The temperature sensor is connected to the controller 6 through a temperature signal output line for real-time monitoring of the pipeline temperature and timely alarm in case of excessive temperature. One end of the purity sampling pipeline is connected to the controller 6 for monitoring the purity of the prepared nitrogen. A pneumatic valve for automatic venting is also provided on the connecting pipeline between the nitrogen buffer tank 3 and the activated carbon filter 4. The pneumatic valves on each device are electrically connected to the controller 6. Ball valves are provided on the dust fine filter 2, the nitrogen buffer tank 3, the activated carbon filter 4 and the sterilizing filter 5.

[0020] The CBN nitrogen generator 1 adopts a pressure swing adsorption nitrogen generator of model CBN-900C in the prior art, the dust fine filter 2 adopts a dust fine filter of model CDF-30 / 10 in the prior art, the nitrogen buffer tank 3 adopts a nitrogen buffer tank of model CG-15 / 8 in the prior art, and the sterilizing filter 5 adopts a sterilizing filter of model CLJ-15 / 10 in the prior art.

[0021] The activated carbon filter 4 includes a base 401 , which is fixed to the ground by bolts. A fixing frame 402 is fixedly connected to the top of the base 401 , and a reaction tank 403 is fixedly connected to the inner wall of the fixing frame 402 .

[0022] An air inlet 404 is provided at the top of the reaction tank 403 , and an air outlet 405 is provided at the bottom of the reaction tank 403 .

[0023] The inner wall of the reaction tank 403 is fixedly connected to a first support plate 407, the inner wall of the reaction tank 403 is fixedly connected to a second support plate 408, the inner wall of the first support plate 407 is rotatably connected to a first rotating rod 409, the surface of the first rotating rod 409 is rotatably connected to the inner wall of the second support plate 408, the left side of the second support plate 408 is fixedly connected to a U-shaped frame 410, the left and right sides of the interior of the reaction tank 403 are fixedly connected to a material guide pipe 406, the bottom of the material guide pipe 406 passes through the bottom of the reaction tank 403, the front side of the material guide pipe 406 is penetrated by a slide groove 425, the groove wall of the slide groove 425 is slidably connected to a concave plate 426, the top of the concave plate 426 is fixedly connected to the third support plate 421, the bottom of the first support plate 407 is fixedly connected to an electric motor, and the bottom of the first rotating rod 409 is fixedly connected to the output end of the electric motor via a coupling; The electric motor is started by the controller 6 , and the electric motor drives the first rotating rod 409 to rotate, so that the device has a power source. The electric motor adopts the electric motor in the prior art.

[0024] The inner wall of the concave plate 426 is fixedly connected to the connecting square tube 424, the interior of the reaction tank 403 is fixedly connected to the filter plate 419, the bottom of the third support plate 421 is fixedly connected to the lifting plate 414, the surface of the lifting plate 414 is slidably connected to the inner wall of the U-shaped frame 410, the top of the first rotating rod 409 is fixedly connected to the cylindrical cam 416, the right side of the lifting plate 414 is fixedly connected to the driven rod 415, the driven rod 415 is in contact with the groove wall of the cylindrical cam 416, and the top of the cylindrical cam 416 is fixedly connected to the second rotating rod 417. The second rotating rod 417 is located at the center of the third support plate 421 and does not contact the third support plate 421. A support ring 423 is fixedly connected to the top of the reaction tank 403. The surface of the connecting square tube 424 is slidably connected to the inner wall of the guide tube 406. Limiting grooves 420 are formed on both sides of the top of the filter plate 419. The surface of the connecting square tube 424 is slidably connected to the groove wall of the limiting groove 420. A rubber brush 418 is fixedly connected to the top of the second rotating rod 417, and the bottom of the rubber brush 418 is in contact with the top of the filter plate 419. The first rotating rod 409 drives the cylindrical cam 416 to rotate. Through the limit of the U-shaped frame 410, the driven rod 415 drives the lifting plate 414 to move upward, thereby driving the third support plate 421 to reciprocate horizontally up and down. The first rotating rod 409 drives the second rotating rod 417 to rotate, causing the rubber brush 418 to rotate, so that the rubber brush 418 sweeps the solid matter on the filter plate 419. The solid matter is affected by the centrifugal force and moves outward and falls into the limit groove 420. The solid matter is discharged through the connecting square tube 424 and the guide tube 406. The cam mechanism is a common motion mechanism consisting of a cam, a follower, and a frame. When the displacement, velocity, and acceleration of the follower must vary strictly according to a predetermined pattern, especially when the driver moves continuously and the follower must move intermittently, a cam mechanism is the simplest solution. The motion pattern of a cam follower is determined by the contour or groove shape of the cam. Cams can convert continuous rotational motion into reciprocating linear motion, enabling the realization of complex motion patterns.

[0025] Blocks 422 are fixedly connected to the left and right sides of the bottom of the support ring 423, and the surfaces of the block 422 are slidably connected to the inner wall of the connecting square tube 424; During filtration, the connecting square tube 424 is blocked by the blocking block 422 , thereby preventing gas from being discharged from the connecting square tube 424 and reducing gas loss.

[0026] A rotating ring 411 is fixedly connected to the surface of the first rotating rod 409, and a rope 412 is fixedly connected to the surface of the rotating ring 411. One end of the rope 412 is fixedly connected to a rubber ball 413. There are three ropes 412, and the three ropes 412 are distributed in a ring array. The rubber ball 413 strikes the guide tube 406, and the third support plate 421 reciprocates horizontally up and down, so that the solid matter can fall quickly, which is convenient for cleaning and recycling of the solid matter, and avoids causing a low gas passing rate and affecting the air intake efficiency.

[0027] There are two concave plates 426 , and the two concave plates 426 are symmetrically distributed left and right.

[0028] In the control method of the energy-saving soft switching nitrogen making equipment of this scheme, when the activated carbon filter 4 is used, the gas first enters the interior of the reaction tank 403 through the air inlet 404, and at this time, the air outlet 405 starts to pump air, so that the gas passes through the filter plate 419 to filter the gas, and the filtered gas is pumped out through the air outlet 405 and enters the next process. After the air pumping is completed, there is no gas inside the air outlet 405, and the electric motor is started by the controller 6. The electric motor drives the first rotating rod 409 to rotate, and the first rotating rod 409 drives the rope 412 and the rubber ball 413 to rotate, so that the rubber ball 413 hits the guide tube 406, causing the guide tube 406 to vibrate, so as to prevent solid objects from adhering to the inner wall of the guide tube 406. At this time, the first rotating rod 409 drives the cylindrical cam 416 to rotate, and the U-shaped frame 410 is limited. The driven rod 415 drives the lifting plate 414 to move upward, thereby driving the third support plate 421 to reciprocate horizontally up and down. The first rotating rod 409 drives the second rotating rod 417 to rotate, so that the rubber brush 418 rotates, so that the rubber brush 418 sweeps the solid matter on the filter plate 419. The solid matter is affected by the centrifugal force and moves outward and falls into the limiting groove 420, so that the solid matter is discharged through the connecting square tube 424 and the guide tube 406. Since the connecting square tube 424 is blocked by the blocking block 422 during filtering, the gas is prevented from being discharged from the connecting square tube 424, thereby reducing gas loss. When the solid matter is discharged, the rubber ball 413 hits the guide tube 406, and the third support plate 421 reciprocates horizontally up and down, so that the solid matter can fall quickly, which is convenient for cleaning and recycling of the solid matter, and avoids causing a low gas passage rate and affecting the air intake efficiency.

[0029] While the 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 can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. Energy-saving soft switching nitrogen production equipment control method, characterized in that: The following steps are involved: S1. Compressed air is introduced into two CBN nitrogen generating devices (1) in sequence. The carbon molecular sieve in the CBN nitrogen generating device (1) is used as an adsorbent. After the compressed air enters the adsorber in the CBN nitrogen generating device (1), it is subjected to pressurized adsorption and decompression desorption in the adsorber. Nitrogen is enriched in the gas phase to form nitrogen gas. S2, the nitrogen gas after the initial treatment is passed into the dust fine filter (2) through a pipeline, and the dust fine filter (2) filters the tiny particles, pollen, bacteria, industrial waste gas and dust in the nitrogen gas; S3, the nitrogen after fine filtration is introduced into the nitrogen buffer tank (3) for temporary storage of nitrogen; S4, passing the nitrogen in the nitrogen buffer tank (3) into the activated carbon filter (4), and removing organic matter, dissolved inorganic matter, residual chlorine and odor in the nitrogen through the activated carbon; S5, the nitrogen filtered through the activated carbon is passed into the sterilizing filter (5) for sterilization treatment; Each device is centrally controlled by a controller (6), and the controller (6) is set to two cycles. When the device outlet gas flow rate is between 450 cubic nanometers per hour and 900 cubic nanometers per hour and the stable output time is greater than 20 minutes, a short cycle operation is adopted; when the device outlet gas flow rate is between 0 cubic nanometers per hour and 450 cubic nanometers per hour and the stable output time is greater than 20 minutes, a long cycle operation is adopted.

2. The energy-saving soft switching nitrogen production equipment control method according to claim 1, characterized in that: The activated carbon filter (4) comprises a base (401), the base (401) being fixed to the ground by bolts, the top of the base (401) being fixedly connected to a fixing frame (402), and the inner wall of the fixing frame (402) being fixedly connected to a reaction tank (403).

3. The energy-saving soft switching nitrogen production equipment control method according to claim 2, characterized in that: The top of the reaction tank (403) is provided with an air inlet (404), and the bottom of the reaction tank (403) is provided with an air outlet (405).

4. The energy-saving soft switching nitrogen production equipment control method according to claim 2, characterized in that: The inner wall of the reaction tank (403) is fixedly connected to a first support plate (407), the inner wall of the reaction tank (403) is fixedly connected to a second support plate (408), the inner wall of the first support plate (407) is rotatably connected to a first rotating rod (409), the surface of the first rotating rod (409) is rotatably connected to the inner wall of the second support plate (408), the left side of the second support plate (408) is fixedly connected to a U-shaped frame (410), and the left and right sides of the interior of the reaction tank (403) are fixedly connected to guide rails. A material pipe (406) is provided, wherein the bottom of the material guide pipe (406) passes through the bottom of the reaction tank (403), a slide groove (425) is provided on the front side of the material guide pipe (406), a groove wall of the slide groove (425) is slidably connected to a concave plate (426), the top of the concave plate (426) is fixedly connected to a third support plate (421), the bottom of the first support plate (407) is fixedly connected to an electric motor, and the bottom of the first rotating rod (409) is fixedly connected to the output end of the electric motor via a coupling.

5. The energy-saving soft switching nitrogen production equipment control method according to claim 4, characterized in that: The inner wall of the concave plate (426) is fixedly connected to a connecting square tube (424), the interior of the reaction tank (403) is fixedly connected to a filter plate (419), the bottom of the third support plate (421) is fixedly connected to a lifting plate (414), the surface of the lifting plate (414) is slidably connected to the inner wall of the U-shaped frame (410), the top of the first rotating rod (409) is fixedly connected to a cylindrical cam (416), the right side of the lifting plate (414) is fixedly connected to a driven rod (415), and the driven rod (415) is in contact with the groove wall of the cylindrical cam (416). The top of the cylindrical cam (416) is fixedly connected to a second rotating rod (417), and the second rotating rod (417) is located at the center of the third support plate (421) and does not contact the third support plate (421). The top of the reaction tank (403) is fixedly connected to a support ring (423). The surface of the connecting square tube (424) is slidably connected to the inner wall of the guide tube (406). The left and right sides of the top of the filter plate (419) are both penetrated by a limiting groove (420), and the surface of the connecting square tube (424) is slidably connected to the groove wall of the limiting groove (420).

6. The energy-saving soft switching nitrogen production equipment control method according to claim 5, characterized in that: The top of the second rotating rod (417) passes through the filter plate (419) and is fixedly connected to a rubber brush (418), and the bottom of the rubber brush (418) is in contact with the top of the filter plate (419).

7. The energy-saving soft switching nitrogen production equipment control method according to claim 5, characterized in that: Blocking blocks (422) are fixedly connected to both the left and right sides of the bottom of the support ring (423), and the surface of the blocking block (422) is slidably connected to the inner wall of the connecting square tube (424).

8. The energy-saving soft switching nitrogen production equipment control method according to claim 4, characterized in that: A rotating ring (411) is fixedly connected to the surface of the first rotating rod (409), a rope (412) is fixedly connected to the surface of the rotating ring (411), one end of the rope (412) is fixedly connected to a rubber ball (413), and the number of the ropes (412) is three, and the three ropes (412) are distributed in a ring array.

9. The energy-saving soft switching nitrogen production equipment control method according to claim 4, characterized in that: The number of the concave plates (426) is two, and the two concave plates (426) are symmetrically distributed left and right.

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