Molecular sieve end cover and oxygen production equipment

Abstract

The utility model discloses a molecular sieve end cover and oxygen production equipment, the molecular sieve end cover is applied to a molecular sieve, and the molecular sieve comprises an oxygen storage tank and at least two adsorption towers. A first adsorption tower groove, a second adsorption tower groove and an oxygen storage tank groove are formed in one face of the molecular sieve end cover at intervals, a first oxygen passing channel, a second oxygen passing channel and a back flushing channel are formed in the molecular sieve end cover, and the first oxygen passing channel is communicated with the first adsorption tower groove and the oxygen storage tank groove. The second oxygen passing channel is respectively communicated with the second adsorption tower groove and the oxygen storage tank groove, and the back flushing channel is respectively communicated with the first adsorption tower groove and the second adsorption tower groove; the first adsorption tower groove is used for being communicated with one adsorption tower, the second adsorption tower groove is used for being communicated with the other adsorption tower, and the oxygen storage tank groove is used for being communicated with an oxygen storage tank. The gas channel is arranged in the molecular sieve end cover, a connecting pipeline does not need to be arranged between each adsorption tower and the oxygen storage tank, and a back flushing valve does not need to be additionally arranged between the adsorption towers, so that the space is saved, the structure is simplified, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical equipment, in particular to a molecular sieve end cover and an oxygen production equipment. BACKGROUND

[0002] Molecular sieve is very useful in a variety of industrial applications due to its ability to selectively adsorb or reject different components in gases and liquids based on molecular size, especially in gas separation, drying and purification processes, for example: molecular sieve is used in air separation devices to produce pure oxygen or pure nitrogen; it can also be used for natural gas desulfurization and carbon dioxide capture; as a high-efficiency drying agent, it is used to remove moisture in air and compressed gas to prevent pipeline corrosion and ice blockage. Among them, the molecular sieve usually includes at least two adsorption towers, so that one adsorption tower performs gas adsorption at the same time, and the other adsorption tower performs regeneration treatment, so as to ensure that one adsorption tower is in working condition at all times, and the output of the target gas is continuous and stable.

[0003] However, in the related art, the plurality of adsorption towers in the molecular sieve are independently installed, and the adsorption towers are connected by a silica gel pipe provided with a throttle bridge. However, the operation of installing the throttle bridge in the silica gel pipe is difficult, and the quality cannot be guaranteed due to the risk of assembly deviation. In addition, the silica gel pipe is used to connect the adsorption towers, which has a high risk of gas leakage, and the pipeline connection is also complex, so that the installation is inconvenient and the maintenance is more difficult. CONTENT OF THE UTILITY MODEL

[0004] The technical problem solved by the present application is to provide a molecular sieve end cover and an oxygen production equipment, so as to solve the problems in the prior art that the plurality of adsorption towers in the molecular sieve are connected by a silica gel pipe, the operation of installing the throttle bridge in the silica gel pipe is difficult, the quality cannot be guaranteed due to the risk of assembly deviation, the silica gel pipe is used to connect the adsorption towers, which has a high risk of gas leakage, and the pipeline connection is also complex, so that the installation is inconvenient and the maintenance is more difficult.

[0005] To solve the above technical problems, one technical solution adopted by the present application is to provide a molecular sieve end cover applied to a molecular sieve, the molecular sieve including an oxygen storage tank and at least two adsorption towers, wherein one side of the molecular sieve end cover is provided with a first adsorption tower slot, a second adsorption tower slot and an oxygen storage tank slot at intervals, and the inside of the molecular sieve end cover is provided with a first oxygen passing channel, a second oxygen passing channel and a back flushing channel, the first oxygen passing channel is connected with the first adsorption tower slot and the oxygen storage tank slot respectively, the second oxygen passing channel is connected with the second adsorption tower slot and the oxygen storage tank slot respectively, and the back flushing channel is connected with the first adsorption tower slot and the second adsorption tower slot respectively; wherein the first adsorption tower slot is used to connect one of the adsorption towers, the second adsorption tower slot is used to connect the other adsorption tower, and the oxygen storage tank slot is used to connect the oxygen storage tank.

[0006] The molecular sieve end cover comprises an end cover body, a first adsorption tower slot, a second adsorption tower slot and an oxygen storage tank slot arranged on one side of the end cover body, and a first oxygen passage and a second oxygen passage arranged in the end cover body.

[0007] The molecular sieve end cover further comprises a cover plate connected to the other side of the end cover body, and a blowback passage is arranged between the cover plate and the end cover body.

[0008] The side of the cover plate facing the end cover body is provided with a groove, and the end cover body is arranged in the groove to form the blowback passage; and / or the side of the end cover body facing the cover plate is provided with a groove, and the cover plate is arranged in the groove to form the blowback passage.

[0009] The molecular sieve comprises a first throttle ring, and the end cover body is provided with a first throttle seat, one end of the first throttle seat is arranged in the first adsorption tower slot, the other end of the first throttle seat extends to the side of the end cover body facing the cover plate, the two ends of the first throttle seat are respectively communicated with the first adsorption tower slot and the blowback passage, and the first throttle ring is arranged in the first throttle seat; and / or the molecular sieve comprises a second throttle ring, and the end cover body is provided with a second throttle seat, one end of the second throttle seat is arranged in the second adsorption tower slot, the other end of the second throttle seat extends to the side of the end cover body facing the cover plate, the two ends of the second throttle seat are respectively communicated with the second adsorption tower slot and the blowback passage, and the second throttle ring is arranged in the second throttle seat.

[0010] The molecular sieve end cover further comprises a sealing ring arranged between the end cover body and the cover plate, and the sealing ring is arranged around the blowback passage.

[0011] The first oxygen passage is provided with a first output port, the second oxygen passage is provided with a second output port, the first output port and the second output port are communicated with the oxygen storage tank slot; the molecular sieve end cover further comprises an elastic pad arranged in the oxygen storage tank slot, the middle part of the elastic pad is connected with the end cover body, and the two ends of the elastic pad are respectively detachably arranged in the first output port and the second output port.

[0012] The end cover body is provided with a mounting groove arranged around the first adsorption tower slot, the second adsorption tower slot and the oxygen storage tank slot, and the mounting groove is used for mounting the oxygen storage tank and the at least two adsorption towers.

[0013] The molecular sieve end cover further comprises a sealing pad arranged in the mounting groove.

[0014] The molecular sieve end cover comprises a throttle member arranged in the blowback passage; and / or the molecular sieve end cover comprises an elastic pad arranged in the oxygen storage tank slot, and the elastic pad is detachably arranged in the first oxygen passage and the second oxygen passage; and / or one side of the molecular sieve end cover is further provided with a mounting groove arranged around the first adsorption tower slot, the second adsorption tower slot and the oxygen storage tank slot, and the mounting groove is provided with a sealing pad.

[0015] The first peroxide channel comprises a first hole section and a second hole section, one end of the first hole section is communicated with the first adsorption tower slot, the first end of the second hole section is communicated with the other end of the first hole section, the second end of the second hole section is communicated with the oxygen storage tank slot, and the hole diameter of the second hole section increases in turn from the first end of the second hole section to the second end of the second hole section; and / or the second peroxide channel comprises a third hole section and a fourth hole section, one end of the third hole section is communicated with the second adsorption tower slot, the first end of the fourth hole section is communicated with the other end of the third hole section, the second end of the fourth hole section is communicated with the oxygen storage tank slot, and the hole diameter of the fourth hole section increases in turn from the first end of the fourth hole section to the second end of the fourth hole section.

[0016] To solve the above technical problems, the application adopts another technical scheme: providing an oxygen generating device, the oxygen generating device comprises at least two adsorption towers, an oxygen storage tank, and the molecular sieve end cover as described in any one of the above, wherein one of the adsorption towers is connected to the first adsorption tower slot of the molecular sieve end cover, the other adsorption tower is connected to the second adsorption tower slot of the molecular sieve end cover, and the oxygen storage tank is connected to the oxygen storage tank slot of the molecular sieve end cover.

[0017] The beneficial effects of the application are: different from the prior art, the molecular sieve end cover provided by the application is applied to a molecular sieve, one side of the molecular sieve end cover is provided with a first adsorption tower slot, a second adsorption tower slot and an oxygen storage tank slot at intervals, the inside of the molecular sieve end cover is provided with a first peroxide channel, a second peroxide channel and a back flushing channel, the first peroxide channel is respectively communicated with the first adsorption tower slot and the oxygen storage tank slot, the second peroxide channel is respectively communicated with the second adsorption tower slot and the oxygen storage tank slot, and the back flushing channel is respectively communicated with the first adsorption tower slot and the second adsorption tower slot, the first adsorption tower slot is used to connect one of the adsorption towers, the second adsorption tower slot is used to connect the other adsorption tower, and the oxygen storage tank slot is used to connect the oxygen storage tank, so that the connection between the oxygen storage tank and each adsorption tower can be realized by the first adsorption tower slot, the second adsorption tower slot, the oxygen storage tank slot, the first peroxide channel and the second peroxide channel and the back flushing channel, and the problems of large installation operation difficulty, large assembly deviation risk and unguaranteed quality caused by installing silica gel pipes and installing throttle bridges in the silica gel pipes to realize the connection between each adsorption tower can be effectively avoided; and since the gas paths for realizing the connection between the oxygen storage tank and each adsorption tower are integrally arranged in the molecular sieve end cover, the gas leakage risk is also effectively reduced, the structure installation of the corresponding connected gas paths is more convenient, and the maintenance is easier; in addition, the integration of the gas paths for realizing the connection between the oxygen storage tank and each adsorption tower in the inside of the molecular sieve end cover can effectively reduce the number of parts, thereby reducing the connection between each part, reducing the gas leakage points, improving the stability, and the overall structure of the molecular sieve end cover is also simpler, so that the processing cost, material cost and assembly cost can be effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a sectional view of an embodiment of the oxygen generating device of the application;

[0019] Figure 2 is a sectional view of an embodiment of the end cap of the molecular sieve of the present application;

[0020] Figure 3 is Figure 2 is an exploded view of the end cap of the medium molecular sieve;

[0021] Figure 4 is Figure 2 is a bottom view of the end cap of the medium molecular sieve;

[0022] Figure 5 is Figure 2 is a structural schematic view of an embodiment of the end cap body in the end cap of the medium molecular sieve;

[0023] Figure 6 is Figure 5 is a sectional view of the end cap body;

[0024] Figure 7 is Figure 5 is a bottom view of the end cap body;

[0025] Figure 8 is Figure 2 is a structural schematic view of an embodiment of the cover plate in the end cap of the medium molecular sieve. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0027] The terms "first", "second", "third", etc. in the present application are only for descriptive purpose and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0028] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that the embodiments described herein are merely examples from a potentially infinite number of embodiments that serve the same, a similar, or other purposes, as will be apparent to one of ordinary skill in the art. It is also understood that one can combine features of different embodiments described herein.

[0029] The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0030] Please refer to Figure 1 , Figure 1 is a sectional view of an embodiment of the oxygen production device of the present application.

[0031] In the present embodiment, the oxygen production device 10 includes at least two adsorption towers 22, an oxygen storage tank 21, and a molecular sieve end cap 30, one of the adsorption towers 22 is connected to a first adsorption tower groove 301 of the molecular sieve end cap 30, the other adsorption tower 22 is connected to a second adsorption tower groove 302 of the molecular sieve end cap 30, and the oxygen storage tank 21 is connected to an oxygen storage tank groove 303 of the molecular sieve end cap 30.

[0032] It is worth noting that the adsorption tower 22 plays a crucial role in the oxygen production device 10. Its main function is to selectively remove or concentrate specific types of gas molecules through physical adsorption, thereby achieving the separation and purification of gas mixtures. The specific role of the adsorption tower 22 and its working principle:

[0033] 1. Gas separation: Application in oxygen generation plant 10: In the oxygen generation plant 10, the adsorption column 22 is mainly used to separate oxygen and nitrogen from air. The molecular sieve 20 material has a high affinity for nitrogen, which can effectively adsorb nitrogen molecules in the air, thereby enriching oxygen and collecting through the system.

[0034] 2. Impurity removal: Application in air purification: The adsorption column 22 can also be used to remove moisture (i.e. dehumidification), carbon dioxide, sulfides and other volatile organic compounds in air or other gas mixtures. This helps to improve the quality of the target gas and reduce the impact of harmful substances.

[0035] 3. Gas concentration and recovery: In some industrial processes, the adsorption column 22 can be used to concentrate rare gases or valuable small molecule gases and recover them from waste gas streams for reuse, saving resources and protecting the environment.

[0036] 4. Pressure fluctuation buffering: The adsorption column 22 can act as a buffer to some extent, reducing the pressure fluctuations in the system caused by changes in air flow, ensuring stable operation of the entire system.

[0037] Among them, the oxygen generation plant 10 is usually provided with at least two adsorption columns 22, which work alternately, that is, one adsorption column 22 is in adsorption oxygen production state, and the other adsorption column 22 is in desorption cleaning state. In order to optimize the gas separation process, maximize the use of adsorption column 22 resources, improve the operating efficiency and stability of the system, and provide better gas separation performance, it is also necessary to realize the communication between different adsorption columns 22. This communication design can achieve the following key goals in oxygen generation plant 10 and other equipment:

[0038] 1. Alternating work and regeneration, continuous operation: By connecting two or more adsorption columns 22, one adsorption column 22 can be used for gas adsorption (i.e. oxygen separation) while the other adsorption column 22 is regenerated. This can ensure that the system always has an adsorption column 22 in working condition, thereby realizing continuous and stable oxygen output. Efficient regeneration: The communication design allows high-pressure clean gas (such as high-purity oxygen) collected from one adsorption column 22 to be introduced into another adsorption column 22 that has completed adsorption through the backflush channel 106, flowing in the opposite direction at a high speed, quickly reducing the pressure in the column and promoting the desorption of adsorbed nitrogen and other impurities. This method not only improves the regeneration efficiency, but also reduces the demand for external energy.

[0039] 2. Balance pressure and flow, pressure equalization: When multiple adsorption towers 22 are connected, the pressure differences between them tend to balance out. This helps to mitigate the impact of pressure fluctuations within individual adsorption towers 22 on the overall system, maintaining stability and consistency in gas flow. Flow distribution: The connection structure also helps to more evenly distribute the gas flow into each adsorption tower 22, preventing some adsorption towers 22 from being overloaded and affecting separation effectiveness. At the same time, during the regeneration process, it ensures that each adsorption tower 22 can obtain sufficient backflush gas volume, improving regeneration quality.

[0040] 3. Enhance flexibility and reliability, fault redundancy: If one of the adsorption towers 22 fails or needs maintenance, the other adsorption towers 22 can still continue to work, maintaining the normal operation of the system. This design increases the fault tolerance of the system and reduces downtime. Scalability: The connection design facilitates the addition of more adsorption towers 22 in the future according to demand, further improving the production capacity of the system or coping with larger gas processing capacity.

[0041] 4. Improve gas purity, multiple purification: In some applications, the gas may need to go through multiple adsorption and regeneration cycles to achieve the required purity. The connected adsorption towers 22 can be part of a whole system, allowing the gas to circulate between multiple adsorption towers 22, gradually removing more impurities, and ultimately obtaining higher purity target gas.

[0042] In this embodiment, the molecular sieve end cap 30 is used to adapt to each adsorption tower 22 to seal one end of each adsorption tower 22, and the molecular sieve end cap 30 can also be provided with internal gas passage and / or valve control system to realize mutual connection between at least two adsorption towers 22, and the flow direction and flow rate can also be adjusted flexibly according to actual working conditions.

[0043] Wherein, when the number of adsorption towers 22 is three or more, the number of first adsorption tower grooves 301 or second adsorption tower grooves 302 arranged at intervals on one side of the molecular sieve end cap 30 can be at least two, respectively used to connect each adsorption tower 22.

[0044] Specifically, please refer to Figures 2-4 , wherein, Figure 2 is a cross-sectional view of an embodiment of the molecular sieve end cap of the present application, Figure 3 is Figure 2 is an exploded view of the molecular sieve end cap in Figure 4 is Figure 2 is a bottom view of the molecular sieve end cap in

[0045] The molecular sieve end cover 30 is particularly applied to the molecular sieve 20 including an oxygen storage tank 21 and at least two adsorption towers 22, and is particularly used for connecting with the oxygen storage tank 21 and the at least two adsorption towers 22 to block one end of the oxygen storage tank 21 and each adsorption tower 22, and to realize the communication between the oxygen storage tank 21 and each adsorption tower 22, and to realize the gas distribution and back flushing functions through the internal structure. Of course, the molecular sieve end cover 30 can also be particularly used in an air purifier, an air drying device or other any reasonable gas separation equipment, and the embodiment is not limited in this regard.

[0046] Specifically, the molecular sieve end cover 30 is provided with a first adsorption tower groove 301, a second adsorption tower groove 302 and an oxygen storage tank groove 303 at one side. The internal structure of the molecular sieve end cover 30 is provided with a first oxygen passage 304, a second oxygen passage 305 and a back flushing passage 306.

[0047] The first adsorption tower groove 301 is arranged at one side of the molecular sieve end cover 30 and is used for communicating with one of the adsorption towers 22. The second adsorption tower groove 302 is arranged at one side of the molecular sieve end cover 30 and is used for communicating with the other adsorption tower 22. The oxygen storage tank groove 303 is arranged at one side of the molecular sieve end cover 30 and is used for communicating with the oxygen storage tank 21.

[0048] The first oxygen passage 304 is arranged in the internal structure of the molecular sieve end cover 30, one end of the first oxygen passage 304 communicates with the first adsorption tower groove 301, and the other end of the first oxygen passage 304 communicates with the oxygen storage tank groove 303. The second oxygen passage 305 is also arranged in the internal structure of the molecular sieve end cover 30, one end of the second oxygen passage 305 communicates with the second adsorption tower groove 302, and the other end of the second oxygen passage 305 communicates with the oxygen storage tank groove 303. The back flushing passage 306 is arranged in the internal structure of the molecular sieve end cover 30 and communicates with the first adsorption tower groove 301 and the second adsorption tower groove 302 respectively.

[0049] It can be understood that the arrangement of the first adsorption tower groove 301, the second adsorption tower groove 302 and the oxygen storage tank groove 303 makes the molecular sieve end cover 30 be able to be conveniently connected with the adsorption tower 22 and the oxygen storage tank 21, and ensures the clear and definite gas flow path. The arrangement of the first oxygen passage 304, the second oxygen passage 305 and the back flushing passage 306 ensures the smooth flow of the gas in different operation modes and supports the functions of adsorption, desorption and oxygen storage.

[0050] It is worth mentioning that when gas adsorption is needed, the mixed gas to be treated (such as air) enters the adsorption tower 22 from the end of the adsorption tower 22 away from the molecular sieve end cover 30, and the mixed gas to be treated flows towards the other end of the adsorption tower 22, and some components (such as nitrogen) are selectively adsorbed by the adsorption material in the adsorption tower 22 to form an oxygen-rich gas into the first adsorption tower tank 301 or the second adsorption tower tank 302, and then through the first oxygen passage 304 or the second oxygen passage 305 into the oxygen storage tank 303, and finally stored in the oxygen storage tank 21. The oxygen storage tank 21 is connected to the oxygen outlet of the oxygen production device from the end away from the molecular sieve end cover 30, thereby supplying oxygen to the user.

[0051] In order to restore the adsorption capacity of the molecular sieve 20 in the adsorption tower 22, a cleaning gas (such as pure oxygen or purified air) is introduced to blow back and clean the adsorption tower 22. When the two adsorption towers 22 work alternately, most of the filtered oxygen-rich gas is adsorbed into the oxygen storage tank 21, and a small part of the oxygen-rich gas enters the other adsorption tower 22 through the backwashing passage 306 to remove impurities adsorbed on the adsorption material, thereby regenerating the other adsorption tower 22. The adsorption tower 22 is provided with a nitrogen outlet away from the molecular sieve end cover 30, and the waste gas (including impurities removed) generated during the desorption process of the adsorption tower 22 will be discharged through the nitrogen outlet.

[0052] Generally, the two adsorption towers 22 will work alternately - one in adsorption state and the other in desorption or regeneration state. This can ensure continuous and stable oxygen output. Through a reasonable valve control system, it ensures that each passage is opened or closed in a predetermined order to effectively link the adsorption, desorption and storage operations. Through careful design of internal channels and external slots, effective separation and storage of gases are achieved, improving the overall efficiency of the system. The first oxygen passage 304, the second oxygen passage 305 and the backwashing passage 306 are integrated in the molecular sieve end cover 30, without the need for additional connecting pipes between the adsorption towers 22 and the oxygen storage tank 21, and without the need for additional backwashing valves between the adsorption towers 22, saving space and simplifying the structure, reducing production costs.

[0053] The above scheme realizes the communication between the oxygen storage tank 21 and each adsorption tower 22 through the first adsorption tower groove 301, the second adsorption tower groove 302, the oxygen storage tank groove 303, the first oxygen passage 304 and the second oxygen passage 305, and the back flushing passage 306, which effectively avoids the problems of great installation operation difficulty, great assembly deviation risk and unguaranteed quality caused by installing silica gel pipes and installing throttle bridges in the silica gel pipes to realize the communication between each adsorption tower 22. Moreover, since the gas path for realizing the communication between the oxygen storage tank 21 and each adsorption tower 22 is integrally arranged in the molecular sieve end cover 30, the gas leakage risk is effectively reduced, the structure installation of the corresponding communication gas path is more convenient, and the maintenance is easier. In addition, the integrally arranged gas path for realizing the communication between the oxygen storage tank 21 and each adsorption tower 22 in the molecular sieve end cover 30 can effectively reduce the number of parts, thereby reducing the connection between each part, reducing the gas leakage point, improving the stability, and the overall structure of the molecular sieve end cover 30 is simpler, so that the processing cost, material cost and assembly cost can be effectively reduced.

[0054] Please continue to refer to Figures 5-7 , wherein Figure 5 is Figure 2 a structural schematic view of an embodiment of an end cover body in the molecular sieve end cover, Figure 6 is Figure 5 a sectional view of the end cover body, Figure 7 is Figure 5 a bottom view of the end cover body.

[0055] In some embodiments, the molecular sieve end cover 30 specifically includes an end cover body 31, and the first adsorption tower groove 301, the second adsorption tower groove 302 and the oxygen storage tank groove 303 are arranged on one side of the end cover body 31, and the first oxygen passage 304 and the second oxygen passage 305 are arranged in the end cover body 31.

[0056] It can be understood that the end cover body 31 is the basis of the entire molecular sieve end cover 30, which not only provides physical support, but also accommodates all internal channels and external grooves, and is usually made of high-strength and corrosion-resistant materials to ensure long-term stable operation.

[0057] Please continue to refer to Figure 8 , Figure 8 is Figure 2 a structural schematic view of an embodiment of a cover plate in the molecular sieve end cover.

[0058] In some embodiments, the molecular sieve end cover 30 specifically further includes a cover plate 32 connected to the other side of the end cover body 31, and the back flushing passage 306 is arranged in the space between the cover plate 32 and the end cover body 31, and respectively communicates the first adsorption tower groove 301 and the second adsorption tower groove 302.

[0059] It can be understood that the design of the blowback channel 306 between the cover plate 32 and the end cover body 31 further enhances the functionality and compactness of the molecular sieve end cover 30. The combined design of the end cover body 31 and the cover plate 32 ensures the close integration of all functional components while maintaining the flexibility and reliability of the system. In particular, the design of the blowback channel 306 further enhances the performance and maintenance convenience of the system.

[0060] In some embodiments, one side of the cover plate 32 is provided with a groove 3061, and when the end cover body 31 is covered on the groove 3061, the blowback channel 306 is formed.

[0061] It can be understood that in some other embodiments, a groove can also be provided on the side of the end cover body 31 facing the cover plate 32, and when the cover plate 32 is covered on the groove, the blowback channel is formed, or the side of the end cover body 31 facing the cover plate 32 is provided with a groove, and the side of the cover plate 32 facing the end cover body 31 is also provided with a corresponding groove, so that when the cover plate 32 is covered on the end cover body 31, the two grooves 3061 are connected to each other to form the blowback channel 306. The specific formation structure of the blowback channel 306 is not limited here.

[0062] In some embodiments, the molecular sieve end cover 30 further comprises a throttling member (not shown in the figure), which is arranged in the blowback channel 306 for controlling the gas flow into the blowback channel 306. The throttling member comprises a first throttling ring 23 and / or a second throttling ring 24.

[0063] In some embodiments, the end cover body 31 is further provided with a first throttling seat 311, one end of the first throttling seat 311 is arranged in the first adsorption tower groove 301, the other end extends to the side of the end cover body 31 facing the cover plate 32, and the two ends of the first throttling seat 311 are respectively connected to the first adsorption tower groove 301 and the blowback channel 306. The first throttling ring 23 is installed in the first throttling seat 311 to limit the gas flow from the first adsorption tower groove 301 to the blowback channel 306.

[0064] In some embodiments, the end cover body 31 is further provided with a second throttling seat 312, one end of the second throttling seat 312 is arranged in the second adsorption tower groove 302, the other end extends to the side of the end cover body 31 facing the cover plate 32, and the two ends of the second throttling seat 312 are respectively connected to the second adsorption tower groove 302 and the blowback channel 306. The second throttling ring 24 is arranged in the second throttling seat 312 to limit the gas flow from the second adsorption tower groove 302 to the blowback channel 306.

[0065] It can be understood that the design of the first throttle ring 23 and the second throttle ring 24 further optimizes the gas flow path of the molecular sieve end cover 30 to make the flow into the blowback channel 306 accurate. This design not only enhances the stability and efficiency of the system, but also improves the effect of the blowback process. In particular, the design of the throttle ring and the throttle seat further improves the performance and maintenance convenience of the system, ensuring the efficient operation of the gas separation and regeneration process.

[0066] In some embodiments, the molecular sieve end cover 30 further comprises a sealing ring 33 arranged between the end cover body 31 and the cover plate 32, and the sealing ring 33 is arranged around the blowback channel 306 to ensure the tight connection between the end cover body 31 and the cover plate 32, thereby avoiding gas leakage in the blowback channel 306. In particular, during the blowback process, the sealing ring 33 can effectively prevent the blowback gas from escaping from the unintended path, ensuring the maximization of the blowback effect.

[0067] In some embodiments, the sealing ring 33 can be made of any reasonable material with good elasticity and temperature resistance, such as silicone rubber or fluororubber, without limitation.

[0068] In some embodiments, the first peroxide channel 304 is further provided with a first output port 3043, one end of the first peroxide channel 304 is connected to the first adsorption tower tank 301, the other end of the first peroxide channel 304 is provided with the first output port 3043, and the first peroxide channel 304 is connected to the oxygen storage tank 303 through the first output port 3043.

[0069] Similarly, the second peroxide channel 305 is also provided with a second output port 3053, one end of the second peroxide channel 305 is connected to the second adsorption tower tank 302, the other end of the second peroxide channel 305 is provided with the second output port 3053, and the second peroxide channel 305 is connected to the oxygen storage tank 303 through the second output port 3053.

[0070] In some embodiments, the molecular sieve end cover 30 further comprises an elastic pad 34, which is arranged in the oxygen storage tank 303, and the elastic pad 34 is detachably covered on the first peroxide channel 304 and the second peroxide channel 305, so as to optimize the gas flow path in the oxygen storage tank 303, ensure that the oxygen-rich gas can uniformly enter the oxygen storage tank 21, and ensure that the gas does not leak from the unintended path in different working states (such as adsorption or blowback).

[0071] In some embodiments, the molecular sieve end cover 30 further comprises an elastic pad 34, which is arranged in the oxygen storage tank 303, and the elastic pad 34 is detachably covered on the first peroxide channel 304 and the second peroxide channel 305, so as to optimize the gas flow path in the oxygen storage tank 303, ensure that the oxygen-rich gas can uniformly enter the oxygen storage tank 21, and ensure that the gas does not leak from the unintended path in different working states (such as adsorption or blowback).

[0072] In some embodiments, the at least two adsorption towers 22 include a first adsorption tower and a second adsorption tower, the first adsorption tower is in communication with the first adsorption tower groove 301, and the second adsorption tower is in communication with the second adsorption tower groove 302. When the oxygen production device is in a non-working state, the two ends of the elastic pad 34 are respectively attached to the groove bottom of the oxygen storage tank groove 303 to cover the first output port 3043 and the second output port 3053 respectively; when the oxygen production device is in a working state, the first adsorption tower and the second adsorption tower groove alternately produce oxygen; when the first adsorption tower is producing oxygen, the internal pressure of the first adsorption tower is relatively large, most of the gas in the first adsorption tower flows into the first oxygen passage 304, and the gas blows the elastic pad 34 away from one end of the first output port 3043, so that one end of the elastic pad 34 is separated from the groove bottom of the oxygen storage tank groove 303, thereby the first output port 3043 is in communication with the oxygen storage tank groove 303, and the gas in the first adsorption tower enters the oxygen storage tank 21; at this time, the second adsorption tower is in a cleaning state, a small part of the gas in the first adsorption tower enters the second adsorption tower through the back blowing passage 306, the nitrogen outlet of the second adsorption tower is opened, the pressure in the second adsorption tower is relatively small, so that the gas in the second adsorption tower cannot blow the elastic pad 34 away from one end of the second output port 3053, that is, the elastic pad 34 still covers the second output port 3053, so that the second output port 3053 is not in communication with the oxygen storage tank groove 303, and thus the gas in the second adsorption tower cannot enter the oxygen storage tank 21; similarly, when the second adsorption tower is producing oxygen, the elastic pad 34 is blown away from one end of the second output port 3053 after the elastic pad 34 is blown away from one end of the first output port 3043, so that the second adsorption tower is in communication with the oxygen storage tank 21, and the first adsorption tower is not in communication with the oxygen storage tank 21.

[0073] In some embodiments, the end cover body 31 is provided with a mounting groove, which is annularly arranged outside the first adsorption tower groove 301, the second adsorption tower groove 302 and the oxygen storage tank groove 303, for mounting the oxygen storage tank 21 and the at least two adsorption towers 22, so that the oxygen storage tank 21 and the at least two adsorption towers 22 can be more conveniently fixed on the end cover body 31, and the stability of the system structure is ensured.

[0074] The mounting groove includes a first mounting groove 3101, a second mounting groove 3102, and a third mounting groove 3103. The first mounting groove 3101 is arranged around the first adsorption tower groove 301, the second mounting groove 3102 is arranged around the second adsorption tower groove 302, and the third mounting groove 3103 is arranged around the oxygen storage tank groove 303. One end of one of the adsorption towers 22 is arranged in the first mounting groove 3101, one end of the other adsorption tower 22 is arranged in the second mounting groove 3102, and one end of the oxygen storage tank 21 is arranged in the third mounting groove 3103. In this embodiment, the two adsorption towers 22 are connected to the oxygen storage tank 21, respectively. Correspondingly, the first mounting groove 3101 and the second mounting groove 3102 are respectively communicated with the third mounting groove 3103, so that the two adsorption towers 22 and the oxygen storage tank 21 can be mounted in the mounting groove. It can be understood that in some other embodiments, the first mounting groove 3101, the second mounting groove 3102, and the third mounting groove 3103 can also be not communicated with each other, as long as the mounting groove can meet the installation of the adsorption tower and the oxygen storage tank. The specific structure of the mounting groove 3103 is not limited here.

[0075] Therefore, the design of the mounting groove further enhances the structural stability and installation convenience of the molecular sieve end cover 30, so that the oxygen storage tank 21 and the at least two adsorption towers 22 can be more stably integrated together. Not only does this further improve the structural stability and installation convenience of the system, ensuring the stable integration and efficient operation of each component, optimizing the overall layout of the system, but also improves the efficiency of installation and maintenance.

[0076] In some embodiments, the molecular sieve end cover 30 specifically further includes a sealing gasket 35 arranged in the mounting groove and surrounding the first adsorption tower groove 301, the second adsorption tower groove 302, and the oxygen storage tank groove 303, to ensure the tight connection between the oxygen storage tank 21 and the adsorption tower 22 and the end cover body 31, preventing gas leakage.

[0077] The sealing gasket 35 has a certain elasticity and can provide cushioning when the gas pressure changes, reducing mechanical impact and prolonging the service life of the system. The sealing gasket 35 can also automatically adjust according to the slight deformation in the mounting groove, ensuring optimal sealing effect. In addition to preventing gas leakage, the sealing gasket 35 can also block external dust and moisture from entering the system, keeping the internal environment clean and dry. Therefore, the design of the sealing gasket 35 further enhances the sealing performance of the molecular sieve end cover 30, ensuring the stable connection of the oxygen storage tank 21 and the adsorption tower 22 in the mounting groove and preventing gas leakage. Not only does this optimize the overall layout of the system, but also improves the reliability and efficiency of the system.

[0078] It is appreciated that the design of the throttle, the elastic pad 34, and the mounting groove with the sealing pad 35 further optimizes the functionality and reliability of the molecular sieve end cover 30. These components work together to ensure efficient management of the gas flow path, enhanced sealing performance, and stable operation of the system.

[0079] In some embodiments, the first peroxide channel 304 includes a first hole section 3041 and a second hole section 3042, one end of the first hole section 3041 being communicated with the first adsorption tower tank 301 as a transition section of gas from the first adsorption tower tank 301 to the second hole section 3042, a first end of the second hole section 3042 being communicated with the other end of the first hole section 3041, a second end of the second hole section 3042 being communicated with the oxygen storage tank 303, and the first output port 3043 being arranged at the second end of the second hole section 3042. The hole diameter of the second hole section 3042 gradually increases from the first end of the second hole section 3042 to the second end of the second hole section 3042, so as to reduce the frictional resistance of the gas in the transmission process and reduce the pressure loss by means of the gradually increasing hole diameter design. Moreover, the gradually changing hole diameter design of the second hole section 3042 helps to stabilize the flow of gas at different stages, avoids turbulent flow of gas, and improves the gas transmission efficiency.

[0080] In some embodiments, the structure of the second peroxide channel 305 is similar to that of the first peroxide channel 304. The second peroxide channel 305 includes a third hole section 3051 and a fourth hole section (not shown in the figure), one end of the third hole section 3051 being communicated with the second adsorption tower tank 302 as a transition section of gas from the second adsorption tower tank 302 to the fourth hole section, a first end of the fourth hole section being communicated with the other end of the third hole section 3051, a second end of the fourth hole section being communicated with the oxygen storage tank 303, and the second output port 3053 being arranged at the second end of the fourth hole section. The hole diameter of the fourth hole section gradually increases from the first end of the fourth hole section to the second end of the fourth hole section, so as to reduce the frictional resistance of the gas in the transmission process and reduce the pressure loss by means of the gradually increasing hole diameter design. Moreover, the gradually changing hole diameter design of the fourth hole section helps to stabilize the flow of gas at different stages, avoids turbulent flow of gas, and improves the gas transmission efficiency.

[0081] It is appreciated that the first peroxide channel 304 and the second peroxide channel 305 with the gradually changing hole diameter design significantly optimize the gas flow path, improve the gas transmission efficiency, and enhance the overall performance of the system. This design not only helps to reduce the pressure loss, but also ensures the stable flow of gas at different stages.

[0082] Different from the prior art, the molecular sieve end cover provided by the application is applied to a molecular sieve, one side of the molecular sieve end cover is provided with a first adsorption tower groove, a second adsorption tower groove and an oxygen storage tank groove, and the inside is provided with a first oxygen passage, a second oxygen passage and a back blowing passage, the first oxygen passage is connected with the first adsorption tower groove and the oxygen storage tank groove respectively, the second oxygen passage is connected with the second adsorption tower groove and the oxygen storage tank groove respectively, and the back blowing passage is connected with the first adsorption tower groove and the second adsorption tower groove respectively, the first adsorption tower groove is used for connecting one of the adsorption towers, the second adsorption tower groove is used for connecting the other adsorption tower, and the oxygen storage tank groove is used for connecting the oxygen storage tank, so that the connection between the oxygen storage tank and the adsorption towers can be realized by the first adsorption tower groove, the second adsorption tower groove, the oxygen storage tank groove, the first oxygen passage and the second oxygen passage and the back blowing passage, and the problems of large installation operation difficulty, large assembly deviation risk and unguaranteed quality caused by installing silica gel pipes and installing throttle bridges in the silica gel pipes to realize the connection between the adsorption towers can be effectively avoided; and since the gas paths for realizing the connection between the oxygen storage tank and the adsorption towers are integrally arranged in the molecular sieve end cover, the gas leakage risk is effectively reduced, the structure installation of the connected gas paths is more convenient, and the maintenance is easier; in addition, the integrally arranged gas paths for realizing the connection between the oxygen storage tank and the adsorption towers in the inside of the molecular sieve end cover can effectively reduce the number of parts, thereby reducing the connection between the parts, reducing the gas leakage points, improving the stability, and the overall structure of the molecular sieve end cover is simpler, so that the processing cost, material cost and assembly cost can be effectively reduced.

[0083] In several embodiments provided in the present application, it should be understood that the disclosed electronic cigarette and power supply assembly can be implemented in other ways. For example, the above-described electronic cigarette and power supply assembly embodiments are only illustrative, and the division of each functional part is only a logical functional division. When actually implemented, there can be another division manner, for example, a plurality of functional parts can be combined or integrated into several modules, or each functional part can exist physically alone, etc.

[0084] The above description is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent principle transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A molecular sieve end cover applied to a molecular sieve, the molecular sieve comprising an oxygen storage tank and at least two adsorption towers, characterized in that, one side of the molecular sieve end cover is provided with a first adsorption tower slot, a second adsorption tower slot and an oxygen storage tank slot, and the inside of the molecular sieve end cover is provided with a first oxygen passage, a second oxygen passage and a back flushing passage, the first oxygen passage is connected with the first adsorption tower slot and the oxygen storage tank slot respectively, the second oxygen passage is connected with the second adsorption tower slot and the oxygen storage tank slot respectively, and the back flushing passage is connected with the first adsorption tower slot and the second adsorption tower slot respectively; wherein the first adsorption tower slot is used to connect one of the adsorption towers, the second adsorption tower slot is used to connect the other adsorption tower, and the oxygen storage tank slot is used to connect the oxygen storage tank. 2.The molecular sieve end cover according to claim 1, characterized in that, the molecular sieve end cover comprises an end cover body, the first adsorption tower slot, the second adsorption tower slot and the oxygen storage tank slot are arranged on one side of the end cover body, and the first oxygen passage and the second oxygen passage are arranged in the end cover body. 3.The molecular sieve end cover according to claim 2, characterized in that, the molecular sieve end cover further comprises a cover plate, the cover plate is connected to the other side of the end cover body, and the back flushing passage is arranged between the cover plate and the end cover body. 4.The molecular sieve end cover according to claim 3, characterized in that, one side of the cover plate facing the end cover body is provided with a groove, and the end cover body is arranged in the groove to form the back flushing passage; and / or, one side of the end cover body facing the cover plate is provided with a groove, and the cover plate is arranged in the groove to form the back flushing passage. 5.The molecular sieve end cover according to claim 3, characterized in that, the molecular sieve comprises a first throttle ring, the end cover body is provided with a first throttle seat, one end of the first throttle seat is arranged in the first adsorption tower slot, the other end of the first throttle seat extends to one side of the end cover body facing the cover plate, the two ends of the first throttle seat are connected with the first adsorption tower slot and the back flushing passage respectively, and the first throttle ring is arranged in the first throttle seat; and / or, the molecular sieve comprises a second throttle ring, the end cover body is provided with a second throttle seat, one end of the second throttle seat is arranged in the second adsorption tower slot, the other end of the second throttle seat extends to one side of the end cover body facing the cover plate, the two ends of the second throttle seat are connected with the second adsorption tower slot and the back flushing passage respectively, and the second throttle ring is arranged in the second throttle seat. 6.The molecular sieve end cover according to claim 3, characterized in that, the molecular sieve end cover further comprises a sealing ring, the sealing ring is arranged between the end cover body and the cover plate, and the sealing ring is arranged around the back flushing passage. 7.The molecular sieve end cover according to claim 2, characterized in that, the first oxygen passage is provided with a first output port, the second oxygen passage is provided with a second output port, and the first output port and the second output port are connected with the oxygen storage tank slot respectively. ​ The molecular sieve end cover further comprises an elastic pad, which is arranged in the oxygen storage tank groove, the middle part of the elastic pad is connected with the end cover body, and the two ends of the elastic pad are respectively detachably covered on the first output port and the second output port.

8. The molecular sieve end cover according to claim 2, characterized in that, The end cover body is provided with a mounting groove, which is annularly arranged outside the first adsorption tower groove, the second adsorption tower groove and the oxygen storage tank groove, and is used for mounting the oxygen storage tank and the at least two adsorption towers.

9. The molecular sieve end cover according to claim 8, characterized in that, The molecular sieve end cover further comprises a sealing pad, which is arranged in the mounting groove.

10. The molecular sieve end cover according to claim 1, characterized in that, The molecular sieve end cover comprises a throttling member, which is arranged in the back flushing channel; and / or, The molecular sieve end cover comprises an elastic pad, which is arranged in the oxygen storage tank groove and is detachably covered on the first peroxide channel and the second peroxide channel; and / or, one side of the molecular sieve end cover is further provided with a mounting groove, which is annularly arranged outside the first adsorption tower groove, the second adsorption tower groove and the oxygen storage tank groove, and is provided with a sealing pad in the mounting groove.

11. The molecular sieve end cover according to any one of claims 1-9, characterized in that, The first peroxide channel comprises a first hole section and a second hole section, one end of the first hole section communicates with the first adsorption tower groove, the first end of the second hole section communicates with the other end of the first hole section, the second end of the second hole section communicates with the oxygen storage tank groove, and the hole diameter of the second hole section increases in turn from the first end of the second hole section to the second end of the second hole section; and / or, The second peroxide channel comprises a third hole section and a fourth hole section, one end of the third hole section communicates with the second adsorption tower groove, the first end of the fourth hole section communicates with the other end of the third hole section, the second end of the fourth hole section communicates with the oxygen storage tank groove, and the hole diameter of the fourth hole section increases in turn from the first end of the fourth hole section to the second end of the fourth hole section.

12. An oxygen generating apparatus, characterized by comprising: Comprise: At least two adsorption towers; An oxygen storage tank; The molecular sieve end cover according to any one of claims 1-9, wherein one of the adsorption towers is connected with the first adsorption tower groove of the molecular sieve end cover, another of the adsorption towers is connected with the second adsorption tower groove of the molecular sieve end cover, and the oxygen storage tank is connected with the oxygen storage tank groove of the molecular sieve end cover.

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