Catalytic adsorption purification device of zero-gas generator

Abstract

The application discloses a catalytic adsorption purification device of a zero-gas generator and relates to the technical field of adsorption purification devices.The catalytic adsorption purification device comprises a tank body, a supporting frame is arranged at the bottom of the tank body, a gas outlet is arranged at the top of the tank body, a gas inlet pipe is arranged on the outer wall of the tank body, and the catalytic adsorption purification device further comprises a floating mechanism, an adsorption assembly and a steering mechanism.The floating mechanism is fixedly installed on the supporting frame, the adsorption assembly is arranged inside the tank body, and the steering mechanism is installed above the adsorption assembly.The steering mechanism comprises a fixing ring and a second motor, the second motor is fixedly installed on the top outer wall of the fixing ring, and the fixing ring is fixedly installed on the circumferential inner wall of the tank body.The catalytic adsorption purification device has the effects of avoiding incomplete regeneration of partial adsorbents and partial overheating failure caused by gas deflection, prolonging the service life of the device and the like.

Description

Technical Field

[0001] This invention relates to the field of adsorption purification device technology, and in particular to a catalytic adsorption purification device with a zero gas generator. Background Technology

[0002] The zero-gas generator consists of an air compressor, a filter unit, and other components. The most critical core of the zero-gas generator is the catalytic adsorption purification device. Ordinary compressed air must flow through this device to undergo high-temperature catalytic oxidation and physical adsorption to remove harmful impurities, ultimately outputting zero gas that meets standards. This zero gas can then be used as combustion gas or blank background gas for analytical instruments such as gas chromatographs (GC) and environmental monitoring.

[0003] In existing catalytic adsorption purification devices, the adsorbent is filled in a fixed bed inside the tank. After long-term use, the adsorbent gradually becomes saturated and requires periodic thermal regeneration. However, in traditional devices, the adsorbent particles in the fixed bed are in a static and accumulated state for a long time during the regeneration process. The airflow is unevenly distributed on the bed cross-section, which can easily lead to flow deviation and channeling. This may result in incomplete regeneration of some adsorbents and failure of some adsorbents due to local overheating, resulting in low regeneration efficiency. This affects the purity of the zero gas output and the service life of the equipment. Summary of the Invention

[0004] This invention discloses a catalytic adsorption purification device for a zero gas generator, aiming to solve the technical problems in traditional devices where, during the regeneration process, the adsorbent particles in the fixed bed are in a static and accumulated state for a long time, the airflow is unevenly distributed on the bed cross-section, and the phenomena of bias flow and channeling are easy to occur. This may lead to incomplete regeneration of some adsorbents, failure of some adsorbents due to local overheating, and low regeneration efficiency, thereby affecting the purity of the zero gas output and the service life of the equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A catalytic adsorption purification device for a zero-gas generator includes a tank, a support frame at the bottom of the tank, an outlet at the top of the tank, and an inlet pipe on the outer wall of the tank. It also includes:

[0007] Floating mechanism: fixedly installed on the support frame;

[0008] Adsorption assembly: located inside the tank;

[0009] Steering mechanism: Installed above the adsorption assembly, the steering mechanism includes a fixed ring and a second motor. The second motor is fixedly installed on the top outer wall of the fixed ring. The fixed ring is fixedly installed on the inner circumferential wall of the tank. A gear ring is connected to the inner circumferential wall of the fixed ring via a bearing. A connecting frame is fixedly connected to the inner circumferential wall of the gear ring. A support rod is provided at the center of the bottom outer wall of the connecting frame. The end of the support rod away from the connecting frame is fixedly connected to the adsorption assembly. An upper sieve plate is provided at the top of the adsorption assembly. Three driven gears are connected to the bottom outer wall of the upper sieve plate and the bottom outer wall of the fixed ring via bearings. The output shaft of the second motor passes through the fixed ring and is fixedly connected to one of the driven gears. All three driven gears mesh with the gear ring.

[0010] Flow guiding component: fixedly connected to the steering mechanism.

[0011] By adopting the above technical solution, incomplete regeneration of some adsorbents and overheating failure caused by gas flow deviation can be avoided, thus extending the service life of the equipment. Specifically, when the device is in normal adsorption operation, the air to be purified enters the tank through the air inlet pipe on the outer wall of the tank, passes through the adsorption assembly for purification, and the purified gas is discharged through the air outlet at the top of the tank. Specifically, when the adsorption assembly needs to be regenerated or adjusted, the second motor starts, and the output shaft of the second motor drives a driven gear fixedly connected to it to rotate. The driven gear drives the gear ring to rotate under the bearing support of the fixed ring. When the gear ring rotates, it drives the adsorption assembly to rotate around the tank axis through the connecting frame and support rod, causing the adsorbent in the adsorption assembly to generate relative movement in the tank. The originally fixedly piled adsorbent particles undergo relative displacement, and the adsorbed impurities on the particle surface are more easily desorbed. At the same time, the rotational motion makes the distribution of regenerated gas on the cross section of the adsorption assembly more uniform.

[0012] In a preferred embodiment, the adsorption assembly includes an adsorbent filling layer corresponding to the inlet of the air inlet pipe. The adsorbent filling layer is coaxially arranged with a third ring layer, a second ring layer, and a first ring layer from the inside to the outside in the radial direction. The first ring layer and the second ring layer, as well as the second ring layer and the third ring layer, are separated by partitions. The adsorbent filling layer is rotatable about the central axis of the support rod.

[0013] In this design, when the air to be purified enters the tank through the inlet pipe, the airflow first contacts the outermost layer of the adsorbent packing layer, and then passes through the first, second, and third ring layers radially inward before flowing out from the central region of the adsorbent packing layer. During this radial flow, the air to be purified passes through three layers of adsorbent in sequence. Compared with the traditional structure where the airflow passes through the adsorbent layer once from top to bottom along the tank axis, in this device, the airflow passes through the three ring layers radially from the outside inward, resulting in a longer contact path and more sufficient contact time between the airflow and the adsorbent, thus significantly improving the purification efficiency.

[0014] In a preferred embodiment, the floating mechanism includes a first motor, which is fixedly mounted on the support frame. The output shaft of the first motor is fixedly connected to a pressing rod. The end of the pressing rod away from the first motor is connected to a collection box via a bearing. The top of the collection box is provided with a lower sieve plate. The bottom outer wall of the tank is provided with a connecting cylinder. The pressing rod is threadedly connected to the inner wall of the connecting cylinder. Both sides of the collection box are provided with discharge ports, and discharge pipes are provided on the discharge ports. Solenoid valves are provided on the discharge pipes.

[0015] In this solution, when it is necessary to adjust the compaction degree of the adsorption component and discharge waste, the first motor is started. The output shaft of the first motor drives the extrusion rod to rotate. Since the extrusion rod is connected to the inner wall of the connecting cylinder by a thread, the extrusion rod is displaced axially relative to the connecting cylinder while rotating. The end of the extrusion rod away from the first motor is connected to the collection box through a bearing. When the extrusion rod rotates, the collection box does not rotate with it, but moves up and down with the axial displacement of the extrusion rod. When the collection box moves up and down, the four guide rods set at the bottom of the collection box slide in the corresponding limiting cylinders to constrain the movement direction of the collection box, ensuring that the collection box always moves in the vertical direction without tilting. When the collection box moves upward... The lower sieve plate at the top of the collection box is close to the bottom of the adsorption assembly, exerting an upward squeezing effect on the adsorbent within the assembly. This forces out pollutants (gaseous or liquid) that are weakly bound due to saturation between adsorbent particles and within the micropores. The extruded material enters the collection box below the lower sieve plate. Simultaneously with the squeezing action, the solenoid valve on the pollutant bypass outlet is opened. The high-concentration pollutants and residual gases that are squeezed out no longer pass through the adsorbent layer for backflushing, but instead are discharged directly from the discharge pipe along the inner wall of the collection box to the external receiving and collecting device. This replenishes and compacts the adsorbent, restoring its packing density, eliminating airflow short-circuiting channels caused by adsorbent loosening, and ensuring that the airflow passes evenly through the adsorbent layer.

[0016] In a preferred embodiment, the flow guiding assembly includes a fixing frame, which is fixedly installed on the inner wall of the air outlet. The bottom outer wall of the fixing frame is connected to a connecting shaft via a bearing. The end of the connecting shaft away from the fixing frame is fixedly connected to the top outer wall of the connecting frame. A flow guiding plate is provided on the outer wall of the connecting shaft, and a plurality of cleaning plates are provided on the outer wall of the flow guiding plate.

[0017] In this design, when the second motor starts, it drives the gear ring to rotate via the driven gear. The gear ring rotates the connecting frame, which in turn drives the connecting shaft to rotate synchronously under the bearing support of the fixed frame. As the connecting shaft rotates, multiple cleaning plates on the outer wall of the guide plate move in a circular motion along with the guide plate. The gas purified by the adsorption component enters the guide component area. The spiral guide plate causes the gas to rotate while moving upward. Under centrifugal force, the rotating gas is thrown towards the inner wall of the tank. Any trace dust or droplets that may be carried in the gas are separated under centrifugal force and collide with the inner wall of the baffle. Under gravity, they move downward along the inner wall of the baffle. As the settling and cleaning plate moves in a circular motion inside the baffle, it disturbs the gas near the inner wall of the baffle, changing the flow state of the gas near the inner wall of the baffle. This prevents dust in the gas from forming a stable boundary layer on the surface of the inner wall of the baffle and accumulating continuously. At the same time, as the cleaning plate rotates with the guide plate, it sweeps the gas in the annular space between the surface of the guide plate and the inner wall of the baffle, keeping the gas in this area in a flowing state and avoiding dead zones. Dust in the gas is difficult to adhere and deposit on the inner wall of the baffle due to the disturbance of the cleaning plate, keeping the inner wall of the baffle clean. The treated gas continues to move upward and is discharged outside the tank through the gas outlet at the top of the tank.

[0018] The beneficial effects of this invention are:

[0019] 1. This invention drives the gear ring to rotate via a second motor in the steering mechanism. The gear ring then drives the adsorption assembly to rotate around the tank axis via a connecting frame and a support rod. When the adsorption assembly rotates, the adsorbent particles inside it undergo relative motion. The adsorbent particles, which were originally tightly packed together due to long-term fixed accumulation, undergo relative displacement. The adsorption active sites covered on the particle surface are re-exposed to the regeneration gas. At the same time, the rotational motion forces the regeneration gas to be redistributed across the entire cross-section of the adsorption assembly. This fundamentally eliminates the problem of incomplete local regeneration or local overheating failure caused by gas flow deviation and channeling. This ensures that the adsorbent in each area can be fully regenerated, extending the service life of the adsorbent and reducing the replacement frequency.

[0020] 2. In this invention, the adsorbent filling layer is coaxially arranged with a third ring layer, a second ring layer and a first ring layer from the inside to the outside. Each layer is separated by a partition. The air to be purified passes through the three ring layers radially from the outside to the inside, thereby significantly extending the contact time between the airflow and the adsorbent. The three ring layers can be filled with adsorbents with different functions to achieve gradient adsorption, giving full play to the best performance of each layer of adsorbent, and resulting in higher purity of the purified gas.

[0021] 3. This invention utilizes the rotation of the spiral guide plate in the flow guiding assembly to cause the purified gas to spiral upward. Under the action of centrifugal force, the trace dust and droplets entrained in the gas are thrown towards the inner wall of the baffle, achieving gas-solid separation and secondary purification of the gas at the outlet. Multiple scrapers rotate synchronously with the guide plate, continuously disturbing the gas near the inner wall of the baffle, preventing dust from adhering and accumulating on the inner wall surface of the baffle, avoiding the reduction of the airflow channel cross-section and secondary pollution caused by dust deposition, and further improving the purity and cleanliness of the zero gas discharged from the outlet. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a catalytic adsorption purification device for a zero-gas generator proposed in this invention.

[0023] Figure 2 This is a schematic diagram of the steering mechanism of the catalytic adsorption purification device for a zero-gas generator proposed in this invention.

[0024] Figure 3 This is a schematic diagram of the adsorption component structure of a catalytic adsorption purification device for a zero-gas generator proposed in this invention.

[0025] Figure 4 This is a schematic diagram of the floating mechanism structure of a catalytic adsorption purification device for a zero-gas generator proposed in this invention.

[0026] Figure 5 This is a schematic diagram of the toothed ring structure of a catalytic adsorption purification device for a zero-gas generator proposed in this invention.

[0027] Figure 6 This is a cross-sectional view of the adsorption component structure of a catalytic adsorption purification device for a zero-gas generator proposed in this invention.

[0028] Figure 7 This is a schematic diagram of the flow guiding component of a catalytic adsorption purification device for a zero-gas generator proposed in this invention.

[0029] In the diagram: 1. Tank body; 2. Fixing ring; 3. Supporting ring; 4. Air outlet; 5. Air inlet pipe; 6. Discharge pipe; 7. Solenoid valve; 8. Support frame; 9. First motor; 10. Connecting cylinder; 11. Adsorbent filling layer; 12. Driven gear; 13. Second motor; 14. Scraper; 15. Guide plate; 16. Lower screen plate; 17. Guide rod; 18. Collection box; 19. Limiting cylinder; 20. Extrusion rod; 21. Gear ring; 22. Connecting frame; 23. Upper screen plate; 24. First ring layer; 25. Second ring layer; 26. Third ring layer; 27. Baffle plate; 28. Discharge port; 29. ​​Support rod; 30. Collection trough; 31. Fixing frame; 32. Cleaning plate; 33. Connecting shaft. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] Reference Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 A catalytic adsorption purification device for a zero-gas generator includes a tank 1, a support frame 8 at the bottom of the tank 1, an air outlet 4 at the top of the tank 1, and an air inlet pipe 5 on the outer wall of the tank 1. It also includes: a floating mechanism fixedly mounted on the support frame 8; an adsorption assembly located inside the tank 1; and a steering mechanism mounted above the adsorption assembly. The steering mechanism includes a fixing ring 2 and a second motor 13, the second motor 13 being fixedly mounted on the top outer wall of the fixing ring 2. The fixing ring 2 is fixedly mounted on the inner circumference of the tank 1, and a toothed ring 21 is connected to the inner circumference of the fixing ring 2 via a bearing. A connecting frame 22 is fixedly connected to the inner circumference of the toothed ring 21. A support rod 29 is provided at the center of the bottom outer wall of the connecting frame 22. The end of the support rod 29 away from the connecting frame 22 is fixedly connected to the adsorption assembly. An upper sieve plate 23 is provided at the top of the adsorption assembly. Three driven gears 12 are connected to the bottom outer wall of the fixing ring 2 of the bottom outer wall of the upper sieve plate 23 through bearings. The output shaft of the second motor 13 passes through the fixing ring 2, and the output shaft of the second motor 13 is fixedly connected to one of the driven gears 12. All three driven gears 12 mesh with the toothed ring 21. The flow guiding assembly is fixedly connected to the steering mechanism.

[0032] Wherein, a support ring 3 is provided between the fixed ring 2 and the upper sieve plate 23, a scraper 14 is fixedly connected to the circumferential inner wall of the support ring 3, the long side at the bottom of the scraper 14 is in contact with the top of the upper sieve plate 23, a collecting groove 30 is provided on the top outer wall of the upper sieve plate 23, the upper sieve plate 23 rotates together with the adsorption assembly, can continuously scrape off dust and fine adsorbent particles accumulated on the surface of the upper sieve plate 23 during rotation, and centrally collect the scraped impurities through the collecting groove 30, effectively preventing sieve pore blockage, ensuring a stable gas flow passage area, and prolonging the continuous operation cycle of the device.

[0033] In a specific implementation process, the scraper 14 has an "丄"-shaped structure, when the adsorption assembly rotates, the horizontal part of the scraper 14 performs circular motion relative to the top outer wall of the upper sieve plate 23, and can effectively guide impurities such as dust and fine adsorbent particles attached to the surface of the upper sieve plate 23 into the collecting groove 30 provided on the top of the upper sieve plate 23.

[0034] Specifically, when the device performs normal adsorption work, the air to be purified enters the interior of the tank body 1 through the intake pipe 5 on the outer wall of the tank body 1, is purified by passing through the adsorption assembly, and the purified gas is discharged through the gas outlet 4 at the top of the tank body 1. Specifically, when the adsorption assembly needs to be regenerated or adjusted, the second motor 13 is started, the output shaft of the second motor 13 drives a driven gear 12 fixedly connected thereto to rotate, the driven gear 12 drives the gear ring 21 to rotate under the bearing support of the fixed ring 2, when the gear ring 21 rotates, the entire adsorption assembly is driven by the connecting frame 22 and the support rod 29 to rotate around the axis of the tank body 1, so that the adsorbent in the adsorption assembly generates relative motion in the tank body 1, relative displacement occurs between the originally fixedly stacked adsorbent particles, adsorbed impurities on the particle surface are more easily desorbed, meanwhile, the rotating motion makes the distribution of the regeneration gas on the cross section of the adsorption assembly more uniform, and avoids the problems of incomplete regeneration of partial adsorbent and partial overheating failure caused by gas maldistribution.

[0035] Reference Figure 1 , Figure 2 , Figure 3 and Figure 6 , in a preferred embodiment, the adsorption assembly comprises an adsorbent filling layer 11, the adsorbent filling layer 11 corresponds to the nozzle of the intake pipe 5, the adsorbent filling layer 11 is sequentially coaxially provided with a third annular layer 26, a second annular layer 25 and a first annular layer 24 from inside to outside in the radial direction, the space between the first annular layer 24 and the second annular layer 25 and the space between the second annular layer 25 and the third annular layer 26 are separated by partition plates 27, and the adsorbent filling layer 11 can rotate around the central axis of the support rod 29.

[0036] It should be noted that the adsorbent filled inside the outermost first ring layer 24 is granular activated carbon, which corresponds to the closing position of the air inlet pipe 5 and is used for coarse adsorption of large molecular pollutants in the compressed air to be purified; the adsorbent filled in the middle second ring layer 25 is molecular sieve, which is used for fine adsorption of the gas after coarse adsorption by the outermost first ring layer 24; the adsorbent filled in the third ring layer 26 closest to the support rod 29 is high silica-alumina ratio molecular sieve or activated alumina, which is used for final deep purification of the gas after adsorption by the middle second ring layer 25, and the purified gas is delivered to the air outlet 4.

[0037] Among them, the partition 27 is an annular porous sieve plate. In specific implementation, the sieve aperture on the partition 27 located between the first annular layer 24 and the second annular layer 25 is smaller than the minimum particle size of the adsorbent particles in the first annular layer 24 and the second annular layer 25.

[0038] Specifically, when the air to be purified enters the tank 1 through the inlet pipe 5, the airflow first contacts the outermost layer of the adsorbent filling layer 11, and then passes through the first ring layer 24, the second ring layer 25 and the third ring layer 26 in a radial direction in sequence before flowing out from the central area of ​​the adsorbent filling layer 11. During the radial flow process, the air to be purified passes through the three layers of adsorbent in sequence. Compared with the traditional structure in which the airflow passes through the adsorbent layer in a single pass from top to bottom along the axial direction of the tank 1, the airflow in this device passes through the three ring layers in a radial direction from the outside to the inside. The contact path between the airflow and the adsorbent is longer and the contact time is more sufficient, resulting in a significant improvement in purification efficiency.

[0039] Reference Figure 1 and Figure 4 In a preferred embodiment, the floating mechanism includes a first motor 9, which is fixedly mounted on a support frame 8. The output shaft of the first motor 9 is fixedly connected to a pressing rod 20. The end of the pressing rod 20 away from the first motor 9 is connected to a collection box 18 via a bearing. The top of the collection box 18 is provided with a lower screen plate 16. The bottom outer wall of the tank body 1 is provided with a connecting cylinder 10. The pressing rod 20 is connected to the inner wall of the connecting cylinder 10 via a thread. Both sides of the collection box 18 are provided with discharge ports 28. The discharge ports 28 are provided with discharge pipes 6, and the discharge pipes 6 are provided with solenoid valves 7.

[0040] The bottom outer wall of the collection box 18 is provided with four guide rods 17, and the bottom inner wall of the tank 1 is provided with four limiting cylinders 19. The guide rods 17 are inserted into the corresponding limiting cylinders 19. When the collection box 18 moves up and down under the drive of the squeezing rod 20, the guide rods 17 can only slide along the axial direction of the limiting cylinder 19, that is, in the vertical direction, and cannot produce displacement in the horizontal direction. This constraint effect is directly transmitted to the collection box 18, so that the collection box 18 always maintains vertical movement throughout the entire movement stroke, ensuring that the lower screen plate 16 at the top of the collection box 18 is always horizontal and will not tilt.

[0041] In addition, the cross-section of the collection box 18 is an inverted "M" structure, with two intersecting sloping surfaces at the top. This protrusion is located in the central area of ​​the bottom of the collection box 18. After the fine powder and particles falling from the lower sieve plate 16 enter the collection box 18, they fall onto the sloping surface of the central protrusion. Under the action of gravity, they automatically flow to both sides and slide down, eventually converging at the discharge ports 28 on both sides. This structure ensures that there is no horizontal bottom surface inside the collection box 18, preventing fine powder from accumulating on the bottom plane. All materials falling into the collection box 18 are guided to the discharge ports 28, ensuring thorough discharge and the long-term self-cleaning effect of the collection box 18.

[0042] In specific implementation, an annular sealing ring is provided on the outer circumference of the lower sieve plate 16. The lower sieve plate 16 achieves a sliding sealing connection with the inner wall of the tank 1 through the annular sealing ring sleeved on the inner wall of the tank. During the up and down movement of the lower sieve plate 16, the annular sealing ring on the outer circumference of the lower sieve plate 16 always keeps in contact with the inner wall of the tank 1, preventing gas or particulate matter from leaking downward to the outside of the collection box 18 or upward to the adsorption component area along the gap between the inner wall of the tank 1 and the lower sieve plate 16.

[0043] Specifically, in the initial state, a certain distance is maintained between the bottom of the adsorption component and the lower sieve plate 16, and the solenoid valve 7 is in the closed state;

[0044] When it is necessary to adjust the compaction degree of the adsorption component and discharge waste, the first motor 9 is started. The output shaft of the first motor 9 drives the extrusion rod 20 to rotate. Since the extrusion rod 20 is connected to the inner wall of the connecting cylinder 10 by a thread, the extrusion rod 20 is displaced axially relative to the connecting cylinder 10 while rotating. The end of the extrusion rod 20 away from the first motor 9 is connected to the collection box 18 through a bearing. When the extrusion rod 20 rotates, the collection box 18 does not rotate with it, but the collection box 18 moves up and down with the axial displacement of the extrusion rod 20. When the collection box 18 moves up and down, the four guide rods 17 set at the bottom of the collection box 18 slide in the corresponding limiting cylinders 19 to constrain the movement direction of the collection box 18 and ensure that the collection box 18 always moves in the vertical direction without deviation. When the collection box 18 moves upward, the lower sieve plate 16 at the top of the collection box 18 approaches the bottom of the adsorption assembly, exerting an upward squeezing effect on the adsorbent in the adsorption assembly. This forces out the gaseous or liquid pollutants that are weakly bound between adsorbent particles and within the micropores due to saturation. The extruded material enters the collection box 18 below the lower sieve plate 16. Simultaneously with the squeezing action, the solenoid valve 7 on the pollutant bypass outlet is opened. The high-concentration pollutants and residual gases that are squeezed out no longer backflush through the adsorbent layer, but are discharged directly from the discharge pipe 6 along the inner wall of the collection box 18 to the external receiving and collecting device. This replenishes and compacts the adsorbent, restores the filling density of the adsorbent, eliminates the airflow short-circuit channel caused by the loosening of the adsorbent, and ensures that the airflow passes evenly through the adsorbent layer.

[0045] Reference Figure 1 and Figure 7 In a preferred embodiment, the flow guiding assembly includes a fixing frame 31, which is fixedly installed on the inner wall of the air outlet 4. The bottom outer wall of the fixing frame 31 is connected to a connecting shaft 33 via a bearing. The end of the connecting shaft 33 away from the fixing frame 31 is fixedly connected to the top outer wall of the connecting frame 22. A flow guiding plate 15 is provided on the outer wall of the connecting shaft 33, and a plurality of cleaning plates 32 are provided on the outer wall of the flow guiding plate 15.

[0046] Among them, a baffle is provided between the fixing ring 2 and the top inner wall of the tank 1. The baffle has a cylindrical structure. A gap is left between the cleaning plate 32 and the inner wall of the baffle. The guide plate 15 has a spiral structure.

[0047] Specifically, when the second motor 13 starts, it drives the gear ring 21 to rotate via the driven gear 12. The gear ring 21 drives the connecting frame 22 to rotate, and the connecting frame 22 drives the connecting shaft 33 to rotate synchronously under the bearing support of the fixed frame 31. When the connecting shaft 33 rotates, the guide plate 15 on the outer wall of the connecting shaft 33 rotates accordingly. The multiple cleaning plates 32 on the outer wall of the guide plate 15 move in a circular motion together with the guide plate 15. The gas purified by the adsorption component flows upward and enters the guide component area. When the gas flows along the spiral guide plate 15, the flow direction changes from axial linear flow to spiral rotational flow. The spiral guide plate 15 applies a tangential velocity to the gas, causing the gas to rotate while moving upward. The rotating gas is thrown towards the inner wall of the tank 1 under the action of centrifugal force. The trace dust or droplets that may be carried in the gas are separated under the action of centrifugal force and collide with the... On the inner wall of the baffle, the gas settles downwards along the inner wall of the baffle under the action of gravity. When the cleaning plate 32 rotates with the guide plate 15, there is a gap between the outer end of the cleaning plate 32 and the inner wall of the baffle. The cleaning plate 32 does not directly contact the inner wall of the baffle. When the cleaning plate 32 makes a circular motion inside the baffle, it disturbs the gas near the inner wall of the baffle, changes the flow state of the gas near the inner wall of the baffle, and prevents the dust in the gas from forming a stable boundary layer on the surface of the inner wall of the baffle and continuously accumulating. At the same time, when the cleaning plate 32 rotates with the guide plate 15, it sweeps the gas in the annular space between the surface of the guide plate 15 and the inner wall of the baffle, so that the gas in this area remains in a flowing state and avoids the occurrence of flow dead zones. The dust in the gas is difficult to adhere and deposit on the inner wall of the baffle due to the disturbance of the cleaning plate 32, keeping the inner wall of the baffle clean. The treated gas continues to move upward and is discharged outside the tank 1 through the gas outlet 4 at the top of the tank 1.

[0048] Working principle: When the device is in normal adsorption operation, the air to be purified enters the interior of the tank 1 through the air inlet pipe 5 on the outer wall of the tank 1, passes through the adsorption assembly for purification, and the purified gas is discharged through the air outlet 4 at the top of the tank 1. Specifically, when the adsorption assembly needs to be regenerated or adjusted, the second motor 13 is started. The output shaft of the second motor 13 drives a driven gear 12 fixedly connected to it to rotate. The driven gear 12 drives the gear ring 21 to rotate under the bearing support of the fixed ring 2. When the gear ring 21 rotates, it drives the adsorption assembly to rotate around the axis of the tank 1 through the connecting frame 22 and the support rod 29, so that the adsorbent in the adsorption assembly generates relative movement in the tank 1. The adsorbent particles that were originally fixedly piled up undergo relative displacement, and the adsorbed impurities on the particle surface are more easily desorbed. At the same time, the rotational motion makes the distribution of regenerated gas on the cross section of the adsorption assembly more uniform.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A catalytic adsorption purification device for a zero-gas generator, comprising a tank (1), characterized in that, A support frame (8) is arranged at the bottom of the tank body (1), an air outlet (4) is arranged at the top of the tank body (1), and an air inlet pipe (5) is arranged on the outer wall of the tank body (1), further comprising: Floating mechanism: fixedly mounted on the support frame (8); Adsorption assembly: located inside the tank body (1); Steering mechanism: mounted above the adsorption assembly, the steering mechanism comprises a fixed ring (2) and a second motor (13), the second motor (13) is fixedly mounted on the top outer wall of the fixed ring (2), the fixed ring (2) is fixedly mounted on the circumferential inner wall of the tank body (1), the circumferential inner wall of the fixed ring (2) is connected with a gear ring (21) through a bearing, the circumferential inner wall of the gear ring (21) is fixedly connected with a connecting frame (22), a support rod (29) is arranged at the center of the bottom outer wall of the connecting frame (22), one end of the support rod (29) away from the connecting frame (22) is fixedly connected with the adsorption assembly, an upper sieve plate (23) is arranged at the top of the adsorption assembly, the bottom outer wall of the upper sieve plate (23) and the bottom outer wall of the fixed ring (2) are connected with three driven gears (12) through bearings, the output shaft of the second motor (13) penetrates through the fixed ring (2), and the output shaft of the second motor (13) is fixedly connected with one of the driven gears (12), and all three driven gears (12) mesh with the gear ring (21); Flow guide assembly: fixedly connected with the steering mechanism.

2. The catalytic adsorption purification device for a zero-gas generator according to claim 1, characterized in that, A support ring (3) is arranged between the fixed ring (2) and the upper sieve plate (23), a scraper (14) is fixedly connected to the circumferential inner wall of the support ring (3), the longer side at the bottom of the scraper (14) is in contact with the top of the upper sieve plate (23), and a collection tank (30) is provided on the top outer wall of the upper sieve plate (23).

3. The catalytic adsorption purification device for a zero-gas generator according to claim 2, characterized in that, The scraper (14) has an inverted T-shaped structure.

4. The catalytic adsorption purification device for a zero-gas generator according to claim 1, characterized in that, The adsorption assembly comprises an adsorbent filling layer (11), the adsorbent filling layer (11) corresponds to the orifice of the intake pipe (5), the adsorbent filling layer (11) is coaxially arranged with a third annular layer (26), a second annular layer (25) and a first annular layer (24) sequentially from inside to outside in a radial direction, the space between the first annular layer (24) and the second annular layer (25) and the space between the second annular layer (25) and the third annular layer (26) are separated by partition plates (27), and the adsorbent filling layer (11) can rotate around the central axis of the support rod (29).

5. The catalytic adsorption purification device for a zero-gas generator according to claim 4, characterized in that, The partition plate (27) is an annular porous sieve plate.

6. The catalytic adsorption purification device for a zero-gas generator according to claim 1, characterized in that, The floating mechanism includes a first motor (9), which is fixedly mounted on the support frame (8). The output shaft of the first motor (9) is fixedly connected to a pressing rod (20). The end of the pressing rod (20) away from the first motor (9) is connected to a collection box (18) through a bearing. The top of the collection box (18) is provided with a lower screen plate (16). The bottom outer wall of the tank (1) is provided with a connecting cylinder (10). The pressing rod (20) is connected to the inner wall of the connecting cylinder (10) through a thread. Both sides of the collection box (18) are provided with discharge ports (28). The discharge ports (28) are provided with discharge pipes (6). The discharge pipes (6) are provided with solenoid valves (7).

7. The catalytic adsorption purification device for a zero-gas generator according to claim 6, characterized in that, The bottom outer wall of the collection box (18) is provided with four guide rods (17), and the bottom inner wall of the tank (1) is provided with four limiting cylinders (19). The guide rods (17) are inserted into the corresponding limiting cylinders (19).

8. The catalytic adsorption purification device for a zero-gas generator according to claim 7, characterized in that, The cross-section of the collection box (18) is an inverted "M" structure.

9. The catalytic adsorption purification device for a zero-gas generator according to claim 1, characterized in that, The flow guiding assembly includes a fixed frame (31), which is fixedly installed on the inner wall of the air outlet (4). The bottom outer wall of the fixed frame (31) is connected to a connecting shaft (33) via a bearing. One end of the connecting shaft (33) away from the fixed frame (31) is fixedly connected to the top outer wall of the connecting frame (22). A flow guiding plate (15) is provided on the outer wall of the connecting shaft (33), and a plurality of cleaning plates (32) are provided on the outer wall of the flow guiding plate (15).

10. The catalytic adsorption purification device for a zero-gas generator according to claim 9, characterized in that, A baffle is provided between the fixing ring (2) and the top inner wall of the tank (1). The baffle is cylindrical. A gap is left between the cleaning plate (32) and the inner wall of the baffle. The guide plate (15) is spiral.

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