Carbon dioxide adsorption filtering device based on soda lime

Abstract

The invention relates to the field of separation and filtration, in particular to a soda lime-based carbon dioxide adsorption and filtration device, which comprises a box body, the box body is communicated with a gas inlet channel and a gas outlet channel, and an adsorption and filtration assembly positioned in the box body is communicated between the gas inlet channel and the gas outlet channel; through gradient cooperation of the multiple layers of adsorption beds and the multiple stages of adsorbent particles, the overall stacking density of the adsorbent particles can be effectively reduced, meanwhile, the utilization rate of the adsorbent particles is increased, the overall adsorption efficiency is improved, the service life of the adsorbent is prolonged, and the more uniform adsorption effect is achieved; and through the turbulent flow frame between the two adjacent adsorption beds, the blown-in air flow is prevented from directly impacting the adsorption beds, and the generation of dust in the use process is effectively reduced.

Description

Technical Field

[0001] The invention relates to the field of separation and filtration, and in particular to a soda lime-based carbon dioxide adsorption filtration device. Background Art

[0002] Currently, carbon dioxide adsorption filtration is a crucial component in ensuring air quality and respiratory safety in medical and industrial applications. The use of carbon dioxide adsorption filtration devices is particularly crucial in the field of anesthesia. The primary purpose of these devices is to absorb carbon dioxide exhaled by patients while simultaneously filtering out harmful airborne substances, ensuring respiratory safety for patients and operating room personnel. Traditional carbon dioxide adsorption filtration methods rely on activated carbon or various chemical adsorbents. However, due to the limited adsorption capacity and selectivity of activated carbon, frequent replacement is often required, increasing costs and complexity in maintenance.

[0003] With the development of science and technology, technicians in related fields have also made a lot of optimizations on the technical means for carbon dioxide adsorption and filtration. In order to make a more accurate comparison, for example, a Chinese patent with announcement number CN220779598U discloses a carbon dioxide adsorption device, including a box body, a first chamber, a water-absorbing sponge, a second chamber, a third chamber and a filter sponge; when in use, the water-absorbing sponge, the carbon dioxide adsorbent, the filter sponge and the activated carbon layer arranged in the box body effectively adsorb and filter the carbon dioxide and water vapor in the patient's exhaled gas, and at the same time, the water vapor generated during the adsorption process and the dust in the adsorbent are adsorbed and removed, thereby ensuring the anesthesia effect and preventing the internal machine parts of the anesthesia machine from being damaged.

[0004] However, the above adsorption device still has some shortcomings in actual use:

[0005] The above-mentioned device drives the gas blown out by the patient through the first chamber, the absorbent sponge, the second chamber, the third chamber and the fourth chamber and then discharges it. In this process, an adsorption bed is formed only by accumulating a large number of adsorbent particles in the second chamber, and then gas is input into it through the air supply pipes inserted in the several adsorption beds. The carbon dioxide in the gas is adsorbed and filtered through the contact between the gas and the adsorbent particles. During use, since the several air supply pipes are relatively fixedly limited in the second chamber, after the gas escapes from the several air supply pipes, due to the large amount of accumulation of adsorbent particles, the airflow cannot effectively contact the adsorbent particles accumulated in the second chamber, and the adsorbent particles accumulated on each other will also hinder the passage of the airflow, so that after the airflow in the air supply pipe flows into the second chamber, its overall contact area with the adsorbent particles is limited, resulting in different overall utilization rates of the adsorbent particles in the second chamber, which increases the time for subsequent staff to sort and replace them.

[0006] Therefore, based on the above-stated viewpoint, there is still room for improvement in the existing technical means for adsorbing carbon dioxide in gases. Summary of the Invention

[0007] To solve the above problems, the present invention provides a soda lime-based carbon dioxide adsorption and filtration device, comprising a housing, an air inlet channel and an air outlet channel being connected to the housing, and an adsorption and filtration assembly located within the housing being connected between the air inlet channel and the air outlet channel. The adsorption and filtration assembly comprises:

[0008] The mounting seat is connected to the box body corresponding to the air inlet channel, and an air guide channel is formed on the mounting seat and is connected to the air inlet channel;

[0009] The mounting cylinder is connected to the mounting base and has an air inlet connected to the air guide channel and the air inlet channel. A plurality of adsorption beds are arranged along the axial direction of the mounting cylinder. The adsorption beds are filled with a soda lime-based adsorbent for adsorbing and filtering carbon dioxide in the gas entering the mounting cylinder.

[0010] The air guide pipe is limitedly arranged on all the adsorption beds and passes through the installation cylinder and the air outlet channel on the box body.

[0011] Preferably, a plurality of adsorption sponges are limit-connected in the air guide channel at the mounting seat for performing adsorption pre-treatment on the gas blown into the air guide channel.

[0012] Preferably, a plurality of the adsorption sponges are sequentially enclosed to form a "mouth"-shaped frame channel, and then limited to the air guide channel on the mounting seat to guide the passing airflow.

[0013] Preferably, the plurality of adsorption beds are spaced apart along the axis of the mounting tube, and a plurality of spoiler frames are provided on the air guide tube corresponding to the spacing limit sleeves between two adjacent adsorption beds.

[0014] Preferably, the spoiler frame comprises a mounting ring sleeve which is provided on the air guide tube as a limiting sleeve, and a plurality of spoiler blades are evenly connected to the outer side of the mounting ring sleeve in the circumferential direction, and the spoiler blades are all provided at an inclined angle.

[0015] Preferably, the air duct is hollow inside and open at one end, and the open end passes through the mounting tube and is connected to the air outlet channel. A plurality of air holes are opened circumferentially on the air duct to allow the gas adsorbed and filtered in the mounting tube to be introduced into the air duct.

[0016] Preferably, a filter box is connected to the air guide tube at a limit position, and the filter box is filled with activated carbon to further filter and adsorb the adsorbed gas.

[0017] Preferably, the installation cylinder is provided with a plurality of discharge ports circumferentially, and the discharge ports are correspondingly arranged between two adjacent adsorption beds.

[0018] Preferably, the air guide pipe is provided with an impeller located at the air guide channel.

[0019] Preferably, a plurality of guide plates are provided on the mounting seat corresponding to the air guide channel and the air inlet channel, and the plurality of guide plates are formed corresponding to the plurality of adsorption sponges and are in a closed shape.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. The present invention guides the warm air flow blown into the box by the patient to flow through the plurality of adsorption sponges and the air guide channel on the mounting base. The adsorption sponge effectively absorbs water vapor in the warm air flow, preventing water vapor from interfering with the carbon dioxide adsorption process and improving the overall adsorption efficiency.

[0022] 2. The present invention adopts a gradient combination of multi-layer adsorption beds and multi-stage adsorbent particles, which can effectively reduce the overall stacking density of the adsorbent particles while improving the utilization rate of the adsorbent particles, improving the overall adsorption efficiency, extending the service life of the adsorbent, and achieving a more uniform adsorption effect. The spoiler between the two adjacent adsorption beds prevents the blown air flow from directly impacting the adsorption bed, effectively reducing the generation of dust during use.

[0023] 3. The present invention drives the air guide tube and the spoiler to rotate through the impeller, driving the dust and water vapor to rotate and shift around the air guide tube as the axis, forcing the dust and water vapor generated during the adsorption process to be discharged from the exhaust port of the installation tube, avoiding the irregular agglomeration of water vapor and dust in the installation tube that affects the air flow efficiency.

[0024] 4. The cooperation between the heat conducting sheet, the heat conducting support sheet and the cavity on the mounting seat provided in the present invention guides the heat released during the adsorption process in the mounting cylinder into the cavity, causing the air in the cavity to be heated. After the cavity is heated, the cavity covers the plurality of adsorption sponges, thereby heating the plurality of adsorption sponges, accelerating the drying and regeneration of the adsorption sponges, and enabling the adsorption sponges to continuously and effectively adsorb water vapor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings and examples.

[0026] Figure 1 It is a structural schematic diagram of the present invention.

[0027] Figure 2 It is a schematic diagram of the cross-sectional structure of the box body of the present invention.

[0028] Figure 3 It is a structural schematic diagram of the adsorption filter component of the present invention.

[0029] Figure 4 It is a structural schematic diagram of the air guide channel of the present invention.

[0030] Figure 5 It is a structural schematic diagram of the spoiler of the present invention.

[0031] Figure 6 It is a structural schematic diagram of the guide plate of the present invention.

[0032] Figure 7 This invention Figure 6 A magnified view of center.

[0033] Figure 8 It is a structural schematic diagram of the cavity on the mounting base of the present invention.

[0034] In the figure, 1. box body; 10. air inlet channel; 11. air outlet channel; 2. adsorption filter assembly; 20. mounting base; 200. air guide channel; 21. mounting cylinder; 210. air inlet; 22. adsorption bed; 23. air guide tube; 230. air vent; 24. adsorption sponge; 25. spoiler frame; 250. mounting ring; 251. spoiler blade; 252. impeller; 26. filter box; 27. outlet; 28. guide plate; 29. heat conducting plate; 290. heat conducting support plate; 291. heat sink; 292. cavity. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1 To the attached Figure 8 The embodiments of the present invention are described in detail.

[0036] The embodiment of the present application discloses a carbon dioxide adsorption and filtration device based on soda lime. The present application is mainly used in the process of adsorbing and filtering carbon dioxide in gas, and technically achieves the effect of adsorbing and filtering carbon dioxide in the patient's exhaled gas through a soda lime-based adsorbent; in particular, in the process of adsorption and filtration, through the guidance of the air guide channel and the setting of the multi-level adsorption bed, while effectively reducing the overall stacking density of the soda lime base, it also improves its carbon dioxide adsorption and filtration efficiency; further, the present application also accelerates the drying and regeneration of the adsorption sponge through the cooperation between the provided heat conducting plate, the heat conducting support plate and the cavity on the mounting seat, so that the adsorption sponge can continuously and effectively adsorb water vapor.

[0037] Example 1: Reference Figure 1 and Figure 2As shown, a soda lime-based carbon dioxide adsorption and filtration device comprises a hollow cylindrical housing 1, with an air inlet channel 10 and an air outlet channel 11 connected thereto. The air inlet channel 10 and the air outlet channel 11 are connected to an adsorption and filtration assembly 2 located within the housing 1. During use, gas is introduced into the housing 1 through the air inlet channel 10 into the adsorption and filtration assembly 2. After the adsorption and filtration assembly 2 adsorbs and filters the carbon dioxide in the gas, the filtered gas is discharged through the air outlet channel 11, completing the adsorption and filtration of the carbon dioxide in the gas.

[0038] Reference Figures 2 to 4 As shown, the adsorption filter assembly 2 is used for adsorbing carbon dioxide in the gas; specifically, the adsorption filter assembly 2 includes:

[0039] The mounting seat 20 is connected to the inside of the box body 1 corresponding to the air inlet passage 10 , and an air guide passage 200 is formed on the mounting seat 20 and is in communication with the air inlet passage 10 .

[0040] The mounting cylinder 21 is connected to the mounting base 20 and is provided with an air inlet 210 which is connected to the air guide channel 200 and the air inlet channel 10. A plurality of adsorption beds 22 are arranged along the axial direction of the mounting cylinder 21. The adsorption beds 22 are filled with soda lime-based adsorbent for adsorbing and filtering carbon dioxide in the gas entering the mounting cylinder 21.

[0041] The air guide pipe 23 is limitedly provided on all the adsorption beds 22 and passes through the installation cylinder 21 and corresponds to the air outlet channel 11 on the box body 1.

[0042] During use, the gas blown into the box body 1 is guided into the installation cylinder 21 through the air inlet channel 10, the air guide channel 200 and the air inlet 210. Then, after the gas passes through the several adsorption beds 22 in the installation cylinder 21, the adsorbent adsorbs and filters the carbon dioxide in the gas, completing the effect of filtering the gas. Finally, the adsorbed and filtered gas is discharged through the air guide pipe 23 and the air outlet channel 11.

[0043] It should be noted that soda lime-based adsorbent is an existing medical chemical agent for adsorbing carbon dioxide. It is mainly composed of particles such as sodium hydroxide, calcium hydroxide and sodium carbonate. These particles react with carbon dioxide in the gas to achieve the effect of adsorbing carbon dioxide. These are all conventional existing technical means and will not be described in detail here.

[0044] Reference Figures 3 to 6As shown, since the patient's exhaled gas is usually a warm and moist airflow, that is, an airflow with a certain temperature and humidity, during the process of adsorption and filtration by the soda lime-based adsorbent, the warm and moist water vapor in the airflow will interfere with the efficiency and effect of the adsorption and filtration. Therefore, in order to avoid the above-mentioned problem, a plurality of adsorption sponges 24 are limitedly connected to the air guide channel 200 at the mounting base 20, which are used to perform adsorption pre-treatment on the gas blown into the air guide channel 200. During use, the gas blown into the air inlet channel 10 and the air guide channel 200 will first pass through the plurality of adsorption sponges 24 at the air guide channel 200. Due to the loose, porous and hydrophilic properties of the sponges, the water vapor in the warm and moist airflow will be adsorbed by the adsorption sponges 24 when passing through the adsorption sponges 24, thereby achieving the adsorption of the water vapor in the warm and moist airflow and completing the dehumidification pre-treatment effect of the airflow blown into the mounting cylinder 21.

[0045] Furthermore, in order to improve the effect of the adsorption sponge 24 in adsorbing and filtering water vapor in the warm air flow, the air inlet 210 on the mounting tube 21 is set away from the side of the air inlet channel 10 to increase the flow path of the warm air flow introduced into the mounting tube 21, that is, to increase the contact time between the warm air flow and the plurality of adsorption sponges 24.

[0046] Reference Figures 4 to 6 As shown, a number of adsorption sponges 24 are sequentially enclosed to form a "mouth"-shaped frame channel, and then limited to the air guide channel 200 between the mounting base 20 and the box body 1 to guide the passing air flow. At the same time, the air guide pipe 23 passes through two horizontally corresponding adsorption sponges 24 and corresponds to the air outlet channel 11.

[0047] During use, the warm air flow blown into the air guide channel 200 will flow from the middle of the frame formed by the multiple adsorption sponges 24, and then enter the installation tube 21 through the air inlet 210 to be adsorbed and filtered. When the air flow passes through the frame channel formed by the multiple adsorption sponges 24, it will continue to contact the multiple adsorption sponges 24, and at the same time effectively increase the contact area between the warm air flow and the adsorption sponge 24, significantly improving the effect of absorbing water vapor in the warm air flow.

[0048] Reference Figure 5 and Figure 6As shown, in the process of the air flow passing through the plurality of adsorption beds 22 and then being discharged through the air duct 23, it will continuously impact the plurality of adsorbent particles in the adsorption bed 22, resulting in collisions between the adsorbent particles and the adsorption bed 22 or between adjacent adsorbent particles, thereby increasing the increase of adsorbent particle dust during use. Usually, in the process of the adsorption reaction of carbon dioxide in the gas by the adsorbent particles, some water vapor will also be generated. At this time, if the adsorbent dust in the adsorption bed 22 increases, although it can accelerate the adsorption rate of carbon dioxide to a certain extent, it will also lead to an increase in water vapor during its adsorption process. After the water vapor contacts the adsorbent dust therein, it will cause irregular agglomeration of the adsorbent dust, which will affect the air flow efficiency and cause unexpected loss of adsorbent, increasing economic costs. In order to avoid the above problems, the plurality of adsorption beds 22 are arranged at intervals along the axis of the mounting tube 21, and a plurality of spoiler frames 25 are provided on the air duct 23 corresponding to the interval limit sleeves between adjacent adsorption beds 22. During use, due to the interference of the spoiler 25 between two adjacent adsorption beds 22, when the gas passes through the adsorption bed 22, it will first contact the spoiler 25 and then pass through the adsorption bed 22 to be adsorbed and filtered, effectively avoiding the direct impact of the airflow on the adsorption bed 22.

[0049] Reference Figure 5 As shown, the spoiler frame 25 includes a mounting ring 250 which is limitedly mounted on the air guide tube 23 , and a number of spoiler blades 251 are evenly connected to the outer side of the mounting ring 250 along the circumference, and the spoiler blades 251 are all arranged at an inclined angle.

[0050] During use, when the airflow passes through several adsorption beds 22, it will first contact the turbulence blades 251 between two adjacent adsorption beds 22. Due to the inclined setting of the turbulence blades 251, most of the airflow will be blown toward the adsorption bed 22 along the inclination of the turbulence blades 251 after contacting the turbulence blades 251, thereby avoiding the airflow directly impacting the adsorption bed 22, effectively avoiding the generation of dust during the use of the adsorbent.

[0051] Furthermore, to improve the utilization efficiency of the adsorbent within the adsorption beds 22 and avoid dust accumulation during use, the adsorbent particles within the multiple adsorption beds 22 are preferably arranged from large to small. That is, the adsorbent particles within one adsorption bed 22 near the air inlet 210 are the largest particles, and then gradually decrease in size to the smallest particles. By configuring multiple layers of adsorption beds 22 and multiple levels of adsorbent particles, the adsorbent packing density is effectively reduced while also improving adsorbent utilization efficiency.

[0052] Reference Figure 5 and Figure 6As shown, the air duct 23 is hollow inside and open at one end. The open end passes through the mounting tube 21 and is connected to the air outlet channel 11. A plurality of air holes 230 are opened on the circumference of the air duct 23 to allow the gas adsorbed and filtered in the mounting tube 21 to be introduced into the air duct 23.

[0053] Reference Figures 5 to 7 As shown, a filter box 26 is connected to the air guide tube 23. The filter box 26 contains activated carbon to further filter and adsorb the adsorbed gas. The activated carbon in the filter box 26 adsorbs the adsorbed gas to further filter and adsorb the gas, while removing odors from the gas, thereby improving the effect of filtering and adsorbing the gas.

[0054] Reference Figures 5 to 7 As shown, during the adsorption of carbon dioxide from the gas using the soda lime adsorbent, some dust and water vapor are inevitably generated as the adsorption process proceeds. To prevent dust and water vapor from interfering with the adsorption process, a plurality of discharge ports 27 are provided circumferentially around the mounting cylinder 21. These discharge ports 27 are positioned between adjacent adsorption beds 22. During operation, as the airflow passes upward through the adsorption beds 22, dust and water vapor generated therein are driven upward by the airflow, separated from the adsorption beds 22, and then suspended between the adjacent adsorption beds 22.

[0055] Further, refer to Figure 6 and Figure 7 As shown, to facilitate the discharge of dust and water vapor suspended between two adjacent adsorption beds 22, an impeller 252 is mounted on the air guide pipe 23, located at the air guide channel 200. The air guide pipe 23 is rotatably installed and penetrates the mounting base 20, the mounting cylinder 21, the adsorption sponge 24, and the plurality of adsorption beds 22. During use, the impeller 252 is driven to rotate, which in turn drives the air guide pipe 23 to rotate. The rotation of the air guide pipe 23 drives all connected mounting rings 250 and spoiler blades 251 to rotate synchronously. The rotation of the spoiler blades 251 drives the water vapor and dust to rotate and shift about the air guide pipe 23 as the axis. As a result, the dust and water vapor applied between the two adjacent adsorption beds 22 tend to escape from the mounting cylinder 21 through the discharge port 27, thereby driving the generated dust and water vapor out of the mounting cylinder 21.

[0056] Furthermore, refer to Figure 5 and Figure 6As shown, a plurality of guide plates 28 are provided on the mounting base 20 corresponding to the air guide channel 200 and the air inlet channel 10. The guide plates 28 are formed to correspond to the adsorption sponges 24. The guide plates 28 are closed, with the closed ends facing the impeller 252 to guide and concentrate the incoming airflow. The guide plates 28, which are closed, effectively guide and concentrate the airflow blown into the air guide channel 200 by the patient toward the impeller 252 within the air guide channel 200, thereby driving the impeller 252 and the air guide tube 23 to rotate as a whole, thereby discharging dust and moisture between adjacent adsorption beds 22.

[0057] Example 2: Reference Figures 5 to 8 As shown, based on Example 1, in the process of adsorbing and filtering carbon dioxide in the gas by soda lime base, since the adsorbent particles (sodium hydroxide, calcium hydroxide, sodium carbonate and other particles) therein adsorb carbon dioxide, the reaction process is an exothermic reaction, and heat is released during the reaction process, causing the temperature of the adsorption bed 22 to rise. The temperature increase will accelerate the reaction rate and increase the adsorption rate of carbon dioxide; however, too high a temperature may promote the desorption of the adsorbent, causing the adsorbed carbon dioxide to be released back into the airflow. At the same time, too high a temperature will also cause the structure of the adsorbent particles to change at high temperature, thereby accelerating the aging process of the adsorbent and causing it to gradually lose its adsorption capacity.

[0058] Therefore, based on the above, a number of heat conducting plates 29 are connected to the mounting seat 20 in a circumferential limit direction, and a number of adsorption beds 22 are connected to the heat conducting plates 29 with heat conducting supports 290 passing through the mounting tube 21. The end of the heat conducting supports 290 away from the connected heat conducting plates 29 is inserted into the mounting tube 21 and contacts the high-temperature gas in the mounting tube 21. At the same time, the end of the heat conducting plates 29 away from the connected heat conducting supports 290 is also connected to a heat sink 291 passing through the box body 1, so as to transfer the heat on the heat conducting plates 29 to the air, thereby realizing heat dissipation treatment of the heat conducting plates 29, the heat conducting supports 290 and the mounting tube 21.

[0059] During use, after the adsorbent releases heat during the reaction process, the heat is dissipated out of the mounting tube 21 and the box body 1 through a number of heat-conducting supports 290, heat-conducting plates 29 and heat sinks 291. The heat transfer between the heat sinks 291 and the outside air achieves the effect of heat conduction and heat dissipation of the high-temperature environment in the mounting tube 21.

[0060] Of course, as an optional embodiment, multiple heat sinks 291 can be added as needed.

[0061] Further, refer to Figures 5 to 8As shown, a cavity 292 is formed in the mounting base 20 near the air guide channel 200 . The cavity 292 is arranged corresponding to the air guide channel 200 and encloses a frame formed by a plurality of adsorption sponges 24 . At the same time, one end of the heat conductive sheet 29 is inserted into the cavity 292 .

[0062] During use, after the heat-conducting support sheet 290 is heated in the mounting tube 21, the heat is transferred to the connected heat-conducting sheet 29. A part of the heat on the heat-conducting sheet 29 is exchanged with the outside world through the connected heat sink 291, thereby forming a heat conduction and heat dissipation effect. The other part of the heat is transferred to the air in the cavity 292 on the mounting base 20 through the heat-conducting sheet 29, so that the air in the cavity 292 is heated. After the cavity 292 is heated, the cavity 292 covers several adsorption sponges 24, thereby heating the adsorption sponges 24 at this time, thereby accelerating the drying and regeneration of the adsorption sponges 24.

[0063] At the same time, as the patient continues to blow in gas, the airflow blown in by the patient is concentrated through the guidance of several guide plates 28, forming a certain flow rate through several adsorption sponges 24. The airflow continues to pass through the channels of the adsorption sponges 24, taking away the adsorbed water vapor, so that the surface of the adsorption sponge 24 is continuously exposed to new water vapor molecules, maintaining an efficient adsorption state. Due to the continuous action of the airflow and the heating effect of the hot air in the cavity 292 on the adsorption sponge 24, the adsorption sponge 24 is not easy to reach the adsorption saturation state, and can continue to effectively adsorb water vapor, thereby increasing the dehumidification pretreatment effect of the gas blown in by the patient.

[0064] During operation: The first step is to drive the warm air flow (with a certain temperature and humidity) exhaled by the patient into the box 1 through the air inlet channel 10, and then guide the warm air flow through the air guide channel 200 into the installation cylinder 21 to be adsorbed and filtered by the adsorbent, and then pre-treated through several adsorption sponges 24 in turn.

[0065] In the second step, the warm airflow is pre-treated by dehumidifying through a number of adsorption sponges 24 limited at the air guide channel 200. At the same time, the air inlet 210 on the mounting tube 21 is set away from the air inlet channel 10, thereby extending the flow path of the warm airflow, increasing the contact time between the airflow and the adsorption sponge 24, and improving the dehumidification effect.

[0066] In the third step, the airflow after dehumidification pretreatment enters the installation cylinder 21 through the air inlet 210, and then passes through multiple adsorption beds 22 in sequence. The adsorption bed 22 is filled with a soda lime-based adsorbent, which reacts chemically with carbon dioxide to achieve an adsorption and filtration effect on carbon dioxide, and then guides the filtered airflow to be discharged through the air duct 23.

[0067] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as exemplary and non-restrictive.

[0068] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A carbon dioxide adsorption and filtration device based on soda lime, comprising a housing (1), characterized in that: The box (1) is connected to an air inlet channel (10) and an air outlet channel (11), and the air inlet channel (10) and the air outlet channel (11) are connected to an adsorption filter assembly (2) located in the box (1). The adsorption filter assembly (2) includes: The mounting seat (20) is connected to the box body (1) corresponding to the air inlet channel (10), and an air guide channel (200) is formed on the mounting seat (20) and is connected to the air inlet channel (10); The mounting cylinder (21) is connected to the mounting seat (20), and is provided with an air inlet (210) which is connected to the air guide channel (200) and the air inlet channel (10). A plurality of adsorption beds (22) are arranged along the axial direction of the mounting cylinder (21). The adsorption beds (22) are filled with a soda lime-based adsorbent for adsorbing and filtering carbon dioxide in the gas entering the mounting cylinder (21); The air guide pipe (23) is limitedly provided on all the adsorption beds (22) and passes through the installation cylinder (21) and the air outlet channel (11) on the box body (1) to correspond.

2. The soda lime-based carbon dioxide adsorption filtration device according to claim 1, characterized in that: A plurality of adsorption sponges (24) are limit-connected in the air guide channel (200) at the mounting seat (20) and are used for adsorption pretreatment of the gas blown into the air guide channel (200).

3. The soda lime-based carbon dioxide adsorption filter device according to claim 2, characterized in that: The plurality of adsorption sponges (24) are sequentially enclosed to form a "mouth"-shaped frame channel, and then are limited to the air guide channel (200) on the mounting seat (20) to guide the passing air flow.

4. The soda lime-based carbon dioxide adsorption filtration device according to claim 1, characterized in that: The plurality of adsorption beds (22) are spaced apart along the axis of the mounting cylinder (21), and a plurality of spoiler frames (25) are provided on the air guide pipe (23) corresponding to the spacing between two adjacent adsorption beds (22).

5. The soda lime-based carbon dioxide adsorption filtration device according to claim 4, characterized in that: The spoiler frame (25) comprises a mounting ring (250) which is provided on the air guide tube (23) as a limiting sleeve, and a plurality of spoiler blades (251) are evenly connected to the outer side of the mounting ring (250) in a circumferential direction, and the spoiler blades (251) are all arranged at an inclined angle.

6. The soda lime-based carbon dioxide adsorption filtration device according to claim 1, characterized in that: The air guide tube (23) is hollow inside and has an open end. The open end passes through the installation tube (21) and is correspondingly connected to the air outlet channel (11). A plurality of air holes (230) are opened on the upper circumference of the air guide tube (23) to allow the gas adsorbed and filtered in the installation tube (21) to be introduced into the air guide tube (23).

7. The soda lime-based carbon dioxide adsorption filtration device according to claim 1, characterized in that: The air guide tube (23) is internally limited and connected to a filter box (26), and the filter box (26) is filled with activated carbon to further filter and adsorb the adsorbed gas.

8. The soda lime-based carbon dioxide adsorption filtration device according to claim 1, characterized in that: The mounting cylinder (21) is provided with a plurality of discharge ports (27) on its circumferential side, and the discharge ports (27) are correspondingly arranged between two adjacent adsorption beds (22).

9. The soda lime-based carbon dioxide adsorption filtration device according to claim 1, characterized in that: The air guide pipe (23) is sleeved with an impeller (252) located at the air guide channel (200).

10. The soda lime-based carbon dioxide adsorption filtration device according to claim 2, characterized in that: A plurality of guide plates (28) are provided on the mounting seat (20) corresponding to the air guide channel (200) and the air inlet channel (10), and the plurality of guide plates (28) are formed to correspond to the plurality of adsorption sponges (24) and present a closed shape.

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