Water removal filtering mechanism and hydrogen purification equipment comprising same

Abstract

The present invention relates to the technical field of hydrogen purification equipment, and particularly discloses a water removal filtration mechanism and hydrogen purification equipment containing the mechanism, the water removal filtration mechanism comprises: an adsorption tower, a first bottom plate is arranged in the adsorption tower, and the first bottom plate divides the inner cavity of the adsorption tower into a first filtration region and a second filtration region which are arranged up and down; the first feeding pipe is vertically arranged in the adsorption tower, a pipe opening of the first feeding pipe is located in the first filtering area, and the first feeding pipe is used for conveying a first adsorbent to the first filtering area; according to the invention, a single adsorption tower partition design is adopted, the adsorption tower is divided into the independent first and second filtering areas by means of the first bottom plate, independent feeding is realized by matching with the coaxial through double feeding pipes, and two groups of complete equipment are not needed, so that the initial acquisition cost and the subsequent operation and maintenance cost of the equipment can be reduced, and meanwhile, the occupied area of the equipment is reduced; and the space limitation requirements of small and medium-sized production scenes are met.

Description

Technical Field

[0001] This invention belongs to the technical field of hydrogen purification equipment, specifically relating to a water removal filtration mechanism and a hydrogen purification device containing the mechanism. Background Technology

[0002] In hydrogen purification processes, the deep removal of water vapor from the feed gas is crucial for ensuring the safe operation of downstream units and the purity of the final product. Existing water removal and filtration systems typically employ a multi-stage combined design: firstly, a cooler and a coalescing gas-liquid separator remove most of the liquid and free water; subsequently, the critical deep dehydration unit generally uses adsorption drying, which utilizes solid adsorbents (such as a composite bed of activated alumina and molecular sieves) to efficiently capture water molecules. To achieve continuous and stable operation of the unit, this unit primarily employs a dual-tower adsorption drying system. Its core principle is to use the periodic switching of valve groups to keep one adsorption tower in online adsorption mode while the other undergoes offline regeneration, thus alternating operations to ensure a continuous supply of dried hydrogen.

[0003] A search revealed that CN121177865A discloses a filtration and purification device and method for hydrogen production, comprising: a box, a barrel, and a drying chamber mounted on a base plate; a first partition fixed inside the box for dividing the inner cavity of the box into at least two independent filtration chambers; and an air inlet assembly adapted to the filtration chambers for supplying hydrogen to be purified to each filtration chamber.

[0004] However, existing dewatering and filtration systems require two sets of equipment, which not only increases the cost of use and maintenance but also increases the floor space required. More importantly, dewatering and filtration systems cannot achieve continuous material change within a single container, limiting their development towards miniaturization and cost reduction, and making it difficult to meet the needs of small and medium-sized production scenarios for dewatering equipment. Summary of the Invention

[0005] The purpose of this invention is to provide a water removal filtration mechanism and a hydrogen purification device containing the mechanism, to solve the problems mentioned in the background art, which require two sets of equipment, increasing not only the cost of use and maintenance but also the floor space required. More importantly, the water removal filtration mechanism cannot achieve continuous material change within a single container, limiting its miniaturization and cost reduction, and making it difficult to meet the needs of small and medium-sized production scenarios for water removal equipment.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A water removal and filtration mechanism includes an adsorption tower, and a first bottom plate is provided inside the adsorption tower. The first bottom plate divides the inner cavity of the adsorption tower into a first filtration zone and a second filtration zone arranged vertically. The water filtration system also includes: The first feed pipe is vertically installed inside the adsorption tower, with its opening located in the first filtration zone, and is used to deliver the first adsorbent to the first filtration zone. The second feed pipe is coaxially connected through the first feed pipe, and its opening is located in the second filtration zone, used to deliver the second adsorbent to the second filtration zone. The first feeding tube is provided with a first triggering component for detecting the saturation state of the first adsorbent, and a first conveying blade driven by the first triggering component and capable of partially moving out of the opening of the first feeding tube. The first feeding tube is configured such that when the first adsorbent is saturated, the first conveying blade replenishes the first adsorbent to the bottom of the first filtration zone. The second feeding pipe is equipped with a second triggering component for detecting the saturation state of the second adsorbent, and a spiral conveying rod driven by the first triggering component. The second feeding pipe is configured such that when the second adsorbent is saturated, the spiral conveying rod replenishes the second adsorbent to the bottom of the second filtration zone.

[0007] In one embodiment, the first feeding tube includes a rotating sleeve coaxially sleeved outside the second feeding tube, and a first driving member for driving the rotating sleeve to rotate; the first conveying blade is a spiral blade, which is slidably connected to the rotating sleeve through the first moving sleeve, and can move along the axial direction of the rotating sleeve with the first moving sleeve.

[0008] In one embodiment, the first triggering component includes a first detection plate and a first elastic element; The first detection plate is horizontally set in the first filtration zone and located below the opening of the first feeding pipe, and the first elastic element is connected between the first detection plate and the first base plate. The first detection plate is connected to the first movable sleeve and can transmit the pressure it receives to the first movable sleeve, driving it to move downward.

[0009] In one embodiment, the first feeding tube further includes a drive sleeve sleeved outside it, and the outer wall of the drive sleeve is provided with a second conveying blade; The inner wall of the drive sleeve is provided with a first slider, and the outer wall of the first feeding tube is provided with a spiral first groove that cooperates with the first slider; The bottom end of the drive sleeve is connected to the first detection plate. When the first detection plate moves down, it can drive the drive sleeve to move down and make the first slider slide along the first slide groove, so that the drive sleeve and the third conveying blade rotate while moving down.

[0010] In one embodiment, a sealing head is provided on the top of the first detection plate, and the sealing head extends upward into the interior of the first feeding tube; when the first detection plate is squeezed and moved downward, it can drive the sealing head to move downward synchronously, so as to release the blockage of the first feeding tube.

[0011] In one embodiment, the second feeding pipe is provided with a second driving member that drives the spiral conveying rod to rotate; and a second movable sleeve sleeved on the second feeding pipe, on which a second conveying blade is installed.

[0012] In one embodiment, the second triggering component includes a second detection plate and a second elastic member; a second base plate is provided at the bottom of the second filtering area, and the second elastic member is connected between the second detection plate and the second base plate; the second detection plate is connected to the second movable sleeve.

[0013] In one embodiment, the inner wall of the second movable sleeve is provided with a second slider, and the outer wall of the second feeding tube is provided with a spiral second groove that cooperates with the second slider; when the second detection plate moves down, it can drive the second movable sleeve to move down and make the second slider slide along the second groove, so that the second movable sleeve and the second conveying blade rotate while moving down.

[0014] In a preferred embodiment, the adsorption tower is provided with a discharge mechanism for discharging saturated adsorbent at positions corresponding to the first and second filtration zones.

[0015] In a preferred embodiment, the first driving element includes: The first gear is fitted onto the rotating sleeve; The second gear is installed on the top wall of the first feeding pipe; The first bevel gear is mounted on the second gear; The first motor is mounted on the first feeding pipe, and a second bevel gear is mounted on its output shaft. The first bevel gear meshes with the second bevel gear.

[0016] In one embodiment, the adsorption tower is provided with an air inlet at the top and an air outlet at the bottom.

[0017] A hydrogen purification device, comprising a water removal and filtration mechanism as described above.

[0018] Compared with the prior art, the beneficial effects of the present invention are: By adopting a single adsorption tower partition design, the adsorption tower is divided into independent first and second filtration zones by the first bottom plate, and independent feeding is achieved with coaxial through double feeding pipes. There is no need to configure two complete sets of equipment, which can reduce the initial purchase cost and subsequent operation and maintenance cost, while reducing the equipment footprint and adapting to the space constraints of small and medium-sized production scenarios.

[0019] By designing a mechanical linkage feeding and discharging mechanism triggered by adsorbent saturation and weight gain, and linking the extension and retraction of conveyor blades, the opening and closing of the sealing head, and the action of the discharging and pushing structure, the two filtration zones can independently complete the closed-loop operation of adsorption, feeding, and discharging. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective.

[0022] Figure 3 This is a schematic diagram of the cross-section of the adsorption tower of the present invention.

[0023] Figure 4 This is a cross-sectional schematic diagram of the adsorption tower, the second conveying blade, and the third conveying blade of the present invention.

[0024] Figure 5 This is a cross-sectional schematic diagram of the drive sleeve, the first detection plate, the second moving sleeve, and the second detection plate of the present invention.

[0025] Figure 6 This is a cross-sectional schematic diagram of the first feeding tube, the rotating sleeve, and the second feeding tube of the present invention.

[0026] Figure 7 This is a schematic cross-sectional view of the first and second feeding pipes of the present invention.

[0027] In the picture: 10. Adsorption tower; 101. First filtration zone; 102. Second filtration zone; 103. Discharge mechanism; 104. First bottom plate; 105. Second bottom plate; 20. First feeding pipe; 201. Rotating sleeve; 202. First moving sleeve; 203. First conveying blade; 204. First gear; 205. Second gear; 206. First bevel gear; 207. First motor; 208. Second bevel gear; 209. Drive sleeve; 210. Second conveying blade; 211. First detection plate; 212. First slider; 213. First chute; 214. First elastic element; 215. Sealing head; 30. Second feeding pipe; 301. Second motor; 302. Screw conveyor rod; 303. Second moving sleeve; 304. Third conveying blade; 305. Second chute; 306. Second slider; 307. Second detection plate; 308. Second elastic element. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1: Please refer to Figures 1-7 A water removal filtration mechanism includes an adsorption tower 10, with a first bottom plate 104 inside the adsorption tower 10, dividing the inner cavity of the adsorption tower 10 into a first filtration zone 101 and a second filtration zone 102 arranged vertically. The water removal filtration mechanism further includes: a first feed pipe 20, vertically disposed inside the adsorption tower 10, with its opening located inside the first filtration zone 101, for feeding a first adsorbent into the first filtration zone 101; and a second feed pipe 30, coaxially passing through the first feed pipe 20, with its opening located inside the second filtration zone 102, for feeding a second adsorbent into the second filtration zone 102; the first feed pipe 20 is equipped with a... The first feeding pipe 20 is configured to: when the first adsorbent is saturated, the first feeding pipe 20 is equipped with a first trigger component for detecting the saturation state of the first adsorbent, and a first conveying blade 203 driven by the first trigger component and capable of partially removing from the opening of the first feeding pipe 20. The first feeding pipe 20 is configured to: when the first adsorbent is saturated, the first conveying blade 203 replenishes the first adsorbent to the bottom of the first filtration zone 101. The second feeding pipe 30 is equipped with a second trigger component for detecting the saturation state of the second adsorbent, and a spiral conveying rod 302 driven by the first trigger component. The second feeding pipe 30 is configured to: when the second adsorbent is saturated, the spiral conveying rod 302 replenishes the second adsorbent to the bottom of the second filtration zone 102.

[0030] The first adsorbent is activated alumina; the second adsorbent is molecular sieve.

[0031] In the above technical solution, the first base plate 104 divides the inner cavity of the adsorption tower 10 into two vertically arranged first and second filtration zones, allowing the two adsorbents to complete their adsorption operations separately in independent spaces. Simultaneously, the first feed pipe 20 and the second feed pipe 30, which are coaxially connected, enable independent feeding of the two filtration zones, preventing the mixing of different adsorbents from affecting the water removal effect. For saturation detection and replenishment of the first adsorbent, a first triggering component is designed to sense the saturation state of the adsorbent in the first filtration zone 101 in real time. When the adsorbent is saturated, the first triggering component drives the first conveying blade 203 to partially move out of the first feed pipe 20. The first adsorbent is precisely delivered to the bottom of the first filtration zone 101 by the rotation of the conveying blades, while the saturated adsorbent is moved towards the discharge direction, so as to achieve continuous feeding and adsorption of the first filtration zone 101 without stopping the machine. Finally, for the second adsorbent, its saturation state is detected by the second trigger component. After triggering, the screw conveyor 302 in the second feeding pipe 30 is driven to rotate. With the help of the stable transmission characteristics of the screw conveyor, the second adsorbent is continuously delivered to the bottom of the second filtration zone 102 to complete the feeding, ensuring the continuity of the adsorption operation of the second filtration zone 102. The independent triggering and feeding of the two filtration zones work together.

[0032] In one embodiment, the first feeding tube 20 includes a rotating sleeve 201 coaxially sleeved outside the second feeding tube 30, and a first driving member for driving the rotating sleeve 201 to rotate; the first conveying blade 203 is a spiral blade, which is slidably connected to the rotating sleeve 201 through the first moving sleeve 202, and can move axially along the rotating sleeve 201 with the first moving sleeve 202.

[0033] During the process of adsorbing moisture, the first and second adsorbents gradually increase in weight as moisture is continuously trapped. When the weight increases to a preset threshold, that is, when the adsorbent reaches saturation, the additional weight will exert downward pressure on the corresponding first detection plate 211 and second detection plate 307. This pressure overcomes the supporting force of the elastic element and pushes the detection plate to move downward along the axis, converting the physical state of adsorbent saturation into a mechanical displacement signal. This provides a direct power transmission basis for the subsequent driving of the feeding structure, and ultimately realizes the synchronization between the feeding action and the adsorbent saturation state.

[0034] Specifically, a layout is adopted in which the rotating sleeve 201 is coaxially sleeved outside the second feeding tube 30, with the second feeding tube 30 serving as the guide and support structure for the rotating sleeve 201. The coaxiality of the two components ensures the stability of the rotating sleeve 201 during rotation. At the same time, the existing structure of the second feeding tube 30 is used to position the rotating sleeve 201, eliminating the need for additional independent guide components. The first driving component provides rotational power to the rotating sleeve 201. Through the sliding connection between the first moving sleeve 202 and the rotating sleeve 201, the rotational power can be synchronously transmitted to the first moving sleeve 202 and the spiral first conveying blade 203 fixed thereon, ensuring that the blade has the basic function of rotating and feeding. At the same time, the sliding connection gives the first moving sleeve 202 the freedom to move along the axial direction of the rotating sleeve 201, allowing the first conveying blade 203 to extend and retract axially under the action of the first trigger component. This achieves the switching between being stored inside the feeding tube when not feeding and extending out during feeding, which satisfies the feeding requirements and avoids adverse effects on the adsorption operation.

[0035] In one embodiment, the first triggering component includes a first detection plate 211 and a first elastic member 214; the first detection plate 211 is horizontally disposed in the first filtration zone 101 and located below the opening of the first feeding pipe 20, and the first elastic member 214 is connected between the first detection plate 211 and the first base plate 104; the first detection plate 211 is connected to the first moving sleeve 202 and can transmit the pressure it receives to the first moving sleeve 202, driving it to move downward.

[0036] In the above technical solution, the first elastic element 214 is a compression spring, or it can be an elastic block; in the unsaturated state, the supporting force of the first elastic element 214 can maintain the initial horizontal position of the first detection plate 211. At this time, the first moving sleeve 202 connected to the detection plate is in a high position, and the first conveying blade 203 is completely housed in the first feeding pipe 20 and will not extend into the first filtration zone 101, thus avoiding interference with the airflow and adsorbent distribution in the filtration zone; when the first adsorbent becomes saturated with water, its weight increases, and the pressure it applies to the first detection plate 211 increases synchronously. When the value exceeds the support threshold of the first elastic element 214, the first elastic element 214 is compressed, and the first detection plate 211 moves smoothly downward in the vertical direction. Since the first detection plate 211 and the first moving sleeve 202 are rigidly connected, this displacement is directly transmitted to the first moving sleeve 202, driving the first moving sleeve 202 to slide synchronously downward along the axis of the rotating sleeve 201. This, in turn, causes the bottom end of the spiral first conveying blade 203 fixed on the outer ring of the first moving sleeve 202 to move out of the opening of the first feeding pipe 20, so that it can contact and convey new first adsorbent to the bottom of the first filtration zone 101. At the same time, the first elastic element 214 also has a reset function. When the saturated adsorbent is discharged through the discharge mechanism 103 and the new adsorbent is replenished, the weight of the adsorbent in the first filtration zone 101 falls back, and the elastic restoring force of the first elastic element 214 can push the first detection plate 211 to reset upward, thereby causing the first moving sleeve 202 and the first conveying blade 203 to retract into the first feeding pipe 20, waiting for the next round of adsorption saturation trigger signal.

[0037] In one embodiment, the first feeding tube 20 further includes a drive sleeve 209 sleeved on its exterior. The outer wall of the drive sleeve 209 is provided with a second conveying blade 210. The inner wall of the drive sleeve 209 is provided with a first slider 212. The outer wall of the first feeding tube 20 is provided with a spiral first groove 213 that cooperates with the first slider 212. The bottom end of the drive sleeve 209 is connected to the first detection plate 211. When the first detection plate 211 moves down, it can drive the drive sleeve 209 to move down and make the first slider 212 slide along the first groove 213, so that the drive sleeve 209 and the third conveying blade 304 rotate while moving downward.

[0038] Specifically, when the first adsorbent becomes saturated and increases in weight, pushing the first detection plate 211 downwards, the detection plate will drive the drive sleeve 209 to move downwards vertically in sync. At this time, the first slider 212 slides along the groove trajectory under the constraint of the spiral first groove 213. The structural characteristics of the spiral groove will convert the vertical downward movement of the drive sleeve 209 into a rotational movement around the axis of the first feeding pipe 20, causing the drive sleeve 209 to generate both downward linear motion and rotational motion simultaneously. The second conveying blade 210, fixed to the drive sleeve 209, moves synchronously. The rotating blade can evenly disperse the new adsorbent transported to the bottom of the filtration zone by the first feeding pipe 20 upwards, while simultaneously pushing the saturated adsorbent in the upper layer of the filtration zone towards the discharge mechanism 103. In conjunction with the replenishment action of the first conveying blade 203, the dynamic replacement of the adsorbent in the first filtration zone 101 is completed, realizing continuous operation without stopping the machine. In one embodiment, the top of the first detection plate 211 is provided with a sealing head 215, which extends upward into the interior of the first feeding tube 20. When the first detection plate 211 is squeezed and moved downward, it can drive the sealing head 215 to move downward synchronously, so as to release the blockage of the first feeding tube 20.

[0039] In the above technical solution, the sealing head 215 and the first detection plate 211 are rigidly connected, and the two can achieve completely synchronous axial displacement. When the first adsorbent becomes saturated with water and increases in weight, the pressure applied to the first detection plate 211 overcomes the supporting force of the first elastic element 214 and drives the detection plate to move downward. At this time, the sealing head 215 will move downward synchronously with the detection plate and gradually detach from the opening of the first feeding pipe 20, releasing the sealing constraint on the first feeding pipe 20 and opening a channel for the delivery of new adsorbent. At this time, the downward-moving first moving sleeve 202 drives the first conveying blade 203 to extend out of the pipe opening, and the new adsorbent can be smoothly delivered to the bottom of the first filtration zone 101. When the saturated adsorbent is discharged and the weight of the adsorbent in the filtration zone falls back, the first elastic element 214 pushes the detection plate to reset upward, and the sealing head 215 also moves upward synchronously, re-extending into the first feeding pipe 20 and sealing the pipe opening.

[0040] In one embodiment, the second feeding pipe 30 is provided with a second driving member that drives the spiral conveying rod 302 to rotate; and a second movable sleeve 303 sleeved on the second feeding pipe 30, on which a second conveying blade 210 is mounted. The second triggering assembly includes a second detection plate 307 and a second elastic member 308; a second base plate 105 is provided at the bottom of the second filtering zone 102, and the second elastic member 308 is connected between the second detection plate 307 and the second base plate 105; the second detection plate 307 is connected to the second movable sleeve 303. A second slider 306 is provided on the inner wall of the second movable sleeve 303, and a spiral second groove 305 that cooperates with the second slider 306 is provided on the outer wall of the second feeding pipe 30; when the second detection plate 307 moves downward, it can drive the second movable sleeve 303 to move downward and make the second slider 306 slide along the second groove 305, so that the second movable sleeve 303 and the second conveying blade 210 rotate while moving downward.

[0041] Specifically, the second driving component is the second motor 301, which can be a servo motor or a stepper motor. In the unsaturated state, the supporting force of the second elastic element 308 keeps the second detection plate 307 in a high position, and the connected second moving sleeve 303 is positioned above the second feeding pipe 30. The second conveying blade 210 is retracted outside the pipe body and does not interfere with the filtration operation. At this time, the spiral conveying rod 302 is in standby mode. When the second adsorbent becomes saturated with water, its weight increases, and the pressure applied to the second detection plate 307 overcomes the supporting threshold of the second elastic element 308, driving the detection plate downwards and causing the second moving sleeve 303 to move downwards synchronously. The second slider 306 on the inner wall of the moving sleeve slides along the spiral second groove 305 on the outer wall of the second feeding pipe 30. The guiding effect of the spiral groove causes the moving sleeve... Vertical displacement is converted into rotational motion, causing the second moving sleeve 303 to drive the second conveying blade 210 to rotate as it moves downward. At the same time, the second driving component drives the screw conveyor 302 to rotate, actively conveying the new molecular sieve in the second feeding pipe 30 to the bottom of the second filtration zone 102. The rotating second conveying blade 210 stirs and disperses the falling molecular sieve, while pushing the saturated molecular sieve in the upper layer of the filtration zone toward the discharge mechanism 103, realizing the non-stop dynamic renewal of the adsorbent in the second filtration zone 102. When the saturated adsorbent is discharged and the new adsorbent is replenished, the weight of the adsorbent in the filtration zone falls back, and the restoring force of the second elastic element 308 pushes the detection plate and the second moving sleeve 303 to reset. The second conveying blade 210 retracts, and the screw conveyor 302 stops moving, completing one replenishment cycle.

[0042] In a preferred embodiment, the adsorption tower 10 is provided with a discharge mechanism 103 for discharging saturated adsorbent at the positions corresponding to the first filtration zone 101 and the second filtration zone 102; the top and bottom of the adsorption tower 10 are respectively provided with an air inlet and an air outlet.

[0043] The discharge mechanism 103 is respectively arranged at the preset discharge positions of the first and second filtration zones 102. When the saturated adsorbent in the first filtration zone 101 is pushed upward to the discharge mechanism 103 by the rotating second conveying blade 210, and the saturated adsorbent in the second filtration zone 102 is pushed to the corresponding discharge port by the rotating second conveying blade 210, the discharge mechanism 103 can discharge the saturated adsorbent in time. This is synchronized with the feeding action of the feeding pipe to maintain the effective storage and activity of the adsorbent in the filtration zone and realize continuous operation without stopping the machine. After the raw gas enters from the top air inlet of the adsorption tower 10, it flows from top to bottom under the action of gravity and pressure difference, and passes through the activated alumina in the first filtration zone 101 and the molecular sieve in the second filtration zone 102 in sequence. The two stages of adsorbent exert their respective water removal advantages and perform gradient interception of moisture in the gas. After deep drying, the gas is finally discharged from the bottom air outlet of the adsorption tower 10, completing the water removal and filtration operation.

[0044] In a preferred embodiment, the first driving component includes: a first gear 204 sleeved on the rotating sleeve 201; a second gear 205 mounted on the top wall of the first feeding pipe 20; a first bevel gear 206 mounted on the second gear 205; and a first motor 207 mounted on the first feeding pipe 20, with a second bevel gear 208 mounted on its output shaft, the first bevel gear 206 meshing with the second bevel gear 208.

[0045] Specifically, after the first motor 207 starts, its output shaft drives the second bevel gear 208 to rotate synchronously. By utilizing the meshing of the first bevel gear 206 and the second bevel gear 208, the horizontal rotational power is converted into vertical power, driving the second gear 205 to rotate. The second gear 205 meshes with the first gear 204 sleeved on the rotating sleeve 201, and the power is precisely transmitted to the first gear 204 through the gear meshing, driving the rotating sleeve 201 to rotate coaxially around the second feeding pipe 30. Since the first moving sleeve 202 and the rotating sleeve 201 are slidably connected, the rotational power of the rotating sleeve 201 can be synchronously transmitted to the first moving sleeve 202 and the spiral first conveying blade 203 fixed on its outer ring, providing rotational driving force for the conveying of the adsorbent. Moreover, this power transmission is not affected by the axial displacement of the first moving sleeve 202. Whether the first conveying blade 203 is in the state of being housed in the feeding pipe or in the state of being moved down and extended into the first filtration zone 101, a stable rotational feeding function can be maintained.

[0046] Example 2: A hydrogen purification device, including the water removal filtration mechanism of Example 1.

[0047] The working principle and usage process of this invention are as follows: After starting the equipment, the gas to be dried enters through the top inlet of the adsorption tower 10, first flowing through the first filtration zone 101. The activated alumina in the first filtration zone 101 adsorbs the moisture in the gas. Then, the gas enters the second filtration zone 102, where the molecular sieve performs deep dehydration on the gas. The dehydrated dry gas is then discharged from the bottom outlet of the adsorption tower 10. During the adsorption process, the weight of the activated alumina and the molecular sieve gradually increases as the adsorbed moisture increases. When the weight of the activated alumina increases to a preset threshold, it affects the first detection plate 211. The pressure overcomes the supporting force of the first elastic element 214, pushing the first detection plate 211 downward. The first detection plate 211 drives the first moving sleeve 202 to slide downward along the axial direction of the rotating sleeve 201, causing the bottom end of the first conveying blade 203 to move out of the opening of the first feeding pipe 20. At the same time, it drives the sealing head 215 to move downward to release the seal on the first feeding pipe 20. The first detection plate 211 drives the driving sleeve 209 to move downward synchronously. The first slider 212 on the inner wall of the driving sleeve 209 slides along the spiral first groove 213 on the outer wall of the first feeding pipe 20, causing the driving sleeve 209 to drive the second conveying blade 203 to move downward. 10 moves downward and rotates. At this time, the first driving component drives the rotating sleeve 201 to rotate, and the output shaft of the first motor 207 drives the second bevel gear 208 to rotate. Through the meshing of the first bevel gear 206 and the second bevel gear 208, the horizontal power is converted into vertical power, driving the second gear 205 to rotate. Then, through the meshing of the second gear 205 and the first gear 204, the rotating sleeve 201 is driven to rotate coaxially around the second feeding pipe 30. The rotating sleeve 201 drives the first moving sleeve 202 and the first conveying blade 203 to rotate, conveying the new activated alumina in the first feeding pipe 20 to the first filtration zone 10. At the bottom, the second conveying blade 210 rotates and pushes the saturated activated alumina on the upper layer of the first filtration zone 101 to move towards the corresponding discharge mechanism 103 and discharge it. When the saturated activated alumina is discharged and the new activated alumina is replenished, the weight of the adsorbent in the first filtration zone 101 drops back. The elastic restoring force of the first elastic element 214 pushes the first detection plate 211 to reset upward, which in turn drives the first moving sleeve 202, the sealing head 215 and the driving sleeve 209 to reset. The first conveying blade 203 retracts into the first feeding pipe 20, and the sealing head 215 re-seals the first feeding pipe 20, waiting for the next trigger.When the weight of the molecular sieve increases to a preset threshold, its pressure on the second detection plate 307 overcomes the supporting force of the second elastic element 308, pushing the second detection plate 307 downward. The second detection plate 307 drives the second moving sleeve 303 to slide downward along the axial direction of the second feeding pipe 30. The second slider 306 on the inner wall of the second moving sleeve 303 slides along the spiral second groove 305 on the outer wall of the second feeding pipe 30, causing the second moving sleeve 303 to drive the third conveying blade 304 downward and rotate. At the same time, the second driving element drives the spiral conveying rod 302 to rotate, conveying the new molecular sieve in the second feeding pipe 30 to the bottom of the second filtration zone 102. The rotation of the third conveying blade 304 pushes the saturated molecular sieve on the upper layer of the second filtration zone 102 to move towards the corresponding discharge mechanism 103 and discharge it. When the saturated molecular sieve is discharged and the new molecular sieve is replenished, the weight of the adsorbent in the second filtration zone 102 falls back, and the elastic restoring force of the second elastic element 308 pushes the second detection plate 307 upward to reset, driving the second moving sleeve 303 to reset.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water removal and filtration mechanism, comprising an adsorption tower, characterized in that, The adsorption tower is provided with a first bottom plate, which divides the inner cavity of the adsorption tower into a first filtration zone and a second filtration zone arranged vertically. The water removal and filtration mechanism also includes: The first feed pipe is vertically installed inside the adsorption tower, with its opening located in the first filtration zone, and is used to deliver the first adsorbent to the first filtration zone. The second feed pipe is coaxially connected through the first feed pipe, and its opening is located in the second filtration zone, used to deliver the second adsorbent to the second filtration zone. The first feeding tube is provided with a first triggering component for detecting the saturation state of the first adsorbent, and a first conveying blade driven by the first triggering component and capable of partially moving out of the opening of the first feeding tube. The first feeding tube is configured such that when the first adsorbent is saturated, the first conveying blade replenishes the first adsorbent to the bottom of the first filtration zone. The second feeding pipe is provided with a second triggering component for detecting the saturation state of the second adsorbent, and a spiral conveying rod driven by the first triggering component. The second feeding pipe is configured such that when the second adsorbent is saturated, the spiral conveying rod replenishes the second adsorbent to the bottom of the second filtration zone.

2. The water removal and filtration mechanism according to claim 1, characterized in that, The first feeding tube includes a rotating sleeve coaxially sleeved outside the second feeding tube, and a first driving member for driving the rotating sleeve to rotate; the first conveying blade is a spiral blade, which is slidably connected to the rotating sleeve through a first moving sleeve, and can move along the axial direction of the rotating sleeve with the first moving sleeve.

3. The water removal and filtration mechanism according to claim 2, characterized in that, The first triggering component includes a first detection plate and a first elastic element; The first detection plate is horizontally disposed in the first filtration zone and located below the inlet of the first feeding pipe, and the first elastic element is connected between the first detection plate and the first base plate; The first detection plate is connected to the first movable sleeve and can transmit the pressure it receives to the first movable sleeve, driving it to move downward.

4. The water removal and filtration mechanism according to claim 3, characterized in that, The first feeding tube also includes a drive sleeve sleeved on its outside, and the outer wall of the drive sleeve is provided with a second conveying blade; The inner wall of the drive sleeve is provided with a first slider, and the outer wall of the first feeding tube is provided with a spiral first groove that cooperates with the first slider; The bottom end of the drive sleeve is connected to the first detection plate. When the first detection plate moves down, it can drive the drive sleeve to move down and make the first slider slide along the first slide groove, so that the drive sleeve and the third conveying blade rotate while moving down.

5. The water removal and filtration mechanism according to claim 4, characterized in that, The top of the first detection plate is provided with a sealing head, which extends upward into the first feeding tube; when the first detection plate is squeezed and moved downward, it can drive the sealing head to move downward synchronously, so as to release the blockage of the first feeding tube.

6. The water removal and filtration mechanism according to claim 1, characterized in that, The second feeding pipe is provided with a second driving component that drives the spiral conveying rod to rotate; and a second movable sleeve sleeved on the second feeding pipe, on which a second conveying blade is installed.

7. The water removal and filtration mechanism according to claim 6, characterized in that, The second triggering component includes a second detection plate and a second elastic element; a second base plate is provided at the bottom of the second filtering area, and the second elastic element is connected between the second detection plate and the second base plate; the second detection plate is connected to the second movable sleeve.

8. The water removal and filtration mechanism according to claim 6, characterized in that, The inner wall of the second movable sleeve is provided with a second slider, and the outer wall of the second feeding tube is provided with a spiral second sliding groove that cooperates with the second slider. When the second detection plate moves down, it can drive the second movable sleeve to move down and make the second slider slide along the second sliding groove, so that the second movable sleeve and the second conveying blade rotate while moving down.

9. The water removal and filtration mechanism according to claim 1, characterized in that, The adsorption tower is equipped with discharge mechanisms for discharging saturated adsorbent at positions corresponding to the first and second filtration zones.

10. The water removal and filtration mechanism according to claim 2, characterized in that, The first driving element includes: The first gear is fitted onto the rotating sleeve; The second gear is installed on the top wall of the first feeding pipe; The first bevel gear is mounted on the second gear; The first motor is mounted on the first feeding pipe, and a second bevel gear is mounted on its output shaft. The first bevel gear meshes with the second bevel gear.

11. The water removal and filtration mechanism according to claim 1, characterized in that, The adsorption tower is provided with an air inlet at the top and an air outlet at the bottom.

12. A hydrogen purification device, characterized in that, The water removal and filtration mechanism includes any one of claims 1-11.

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