Quickly-sealed carbon dioxide absorption device

Abstract

The utility model discloses a carbon dioxide absorption device capable of being quickly sealed. The carbon dioxide absorption device comprises an upper sealing cover, a cylinder body, a lower sealing cover, a medicament module, a fan, a mounting seat, a first supporting assembly, a second supporting assembly and a lock catch, the upper sealing cover is mounted at the upper end of the barrel through a first supporting assembly and a second supporting assembly and is locked through a lock catch to realize sealing; when the lock catch is unlocked, the first supporting assembly and the second supporting assembly drive the upper sealing cover to be bounced off, an air inlet gap is formed between the upper sealing cover and the upper end of the barrel, and the upper sealing cover can be separated from the barrel through the second supporting assembly and overturned through the first supporting assembly. The lower sealing cover is installed at the lower end of the cylinder through a first supporting assembly and is locked through a lock catch to achieve sealing. When the lock catch is unlocked, the first supporting assembly drives the lower sealing cover to bounce off, and an air outlet gap is formed between the lower sealing cover and the lower end of the barrel. The medicament module is arranged in the cylinder through the mounting seat and used for absorbing carbon dioxide, the fan is fixed at the bottom of the mounting seat, and meanwhile, a through hole is formed in the mounting seat and communicated with an air inlet of the fan. According to the utility model, rapid switching between a sealing state and a working state can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon dioxide absorption devices, in particular to a fast-sealed carbon dioxide absorption device. Background Art

[0002] When a manned submersible is operating underwater, its manned cabin is a limited, enclosed space. As the crew members breathe and produce carbon dioxide, the concentration of carbon dioxide in the cabin will continue to rise. The human body is very sensitive to the increase of carbon dioxide in the air. When the concentration of carbon dioxide reaches 1%, the human body will feel dull, have adverse reactions such as inattention and palpitations.

[0003] To protect the health of the crew, the cabin of the manned submersible must be equipped with a carbon dioxide removal device. When a rescue boat or a special operations boat is performing a rescue mission or a combat mission underwater, there is a scenario where the boat door is opened underwater to allow personnel inside the boat to enter and exit. Seawater will enter the cabin. At this time, the carbon dioxide absorption device is required to be able to quickly switch from the working state to the sealed state, and must have a certain pressure resistance to prevent the carbon dioxide absorption device from being damaged after being immersed in water. After the seawater in the cabin is discharged, the carbon dioxide absorption device can quickly switch from the sealed state to the working state.

[0004] The carbon dioxide absorption device in the prior art does not have a sealing function, and cannot achieve rapid switching between a sealing state and a working state. Utility Model Content

[0005] In view of this, the utility model provides a fast-sealed carbon dioxide absorption device, which can achieve fast switching between a sealed state and a working state.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A fast-sealed carbon dioxide absorption device comprises an upper sealing cover, a cylinder, a lower sealing cover, a medicine module, a fan, a mounting seat, a first supporting assembly, a second supporting assembly and a lock;

[0008] The upper sealing cover is installed on the upper end of the cylinder body through the first supporting assembly and the second supporting assembly, and is sealed by locking with a lock; when the lock is unlocked, the first supporting assembly and the second supporting assembly drive the upper sealing cover to pop open, and an air inlet gap is formed between the upper sealing cover and the upper end of the cylinder body, and the upper sealing cover can be separated from the cylinder body through the second supporting assembly and flipped over by the first supporting assembly; the lower sealing cover is installed on the lower end of the cylinder body through the first supporting assembly, and is sealed by locking with a lock; when the lock is unlocked, the first supporting assembly drives the lower sealing cover to pop open, and an air outlet gap is formed between the lower sealing cover and the lower end of the cylinder body; the medicine module is arranged in the cylinder body through a mounting seat for absorbing carbon dioxide, and the fan is fixed at the bottom of the mounting seat, and a through hole is provided on the mounting seat to communicate with the air inlet of the fan.

[0009] Further, the medicine module includes a medicine ventilation outer cylinder, a medicine and a medicine ventilation inner cylinder;

[0010] The upper end of the medicine ventilation outer cylinder is connected and fixed to the upper end of the cylinder body through a ventilation ring, and the lower end of the medicine ventilation outer cylinder is limited in the annular groove of the mounting seat; the medicine ventilation inner cylinder is located in the medicine ventilation outer cylinder, and the medicine ventilation inner cylinder is connected to the through hole on the mounting seat; the medicine is arranged between the medicine ventilation inner cylinder and the medicine ventilation outer cylinder.

[0011] Furthermore, the through hole on the mounting seat is a tapered hole, the diameter of the tapered hole at the small diameter end is equal to the diameter of the medicine ventilation inner cylinder, and is used for positioning the medicine ventilation inner cylinder; the large diameter end of the tapered hole is in contact with the fan air inlet and sealed.

[0012] Furthermore, the medicine ventilation outer cylinder is a cylindrical structure formed by rolling a stainless steel plate mesh; the ventilation ring is a circular ring structure made of a stainless steel plate mesh; and the medicine ventilation inner cylinder is a cylindrical structure formed by rolling a stainless steel plate mesh.

[0013] Furthermore, the agent is lithium hydroxide, calcium hydroxide or potassium superoxide.

[0014] Further, the first support assembly includes a first support shaft, a first upper head, a first support cylinder, a first spring and a first lower bottom cover;

[0015] The first support tube is vertically fixed on the outer circumference of the tube body, and the first lower bottom seal is encapsulated at the bottom of the first support tube; the first support shaft is a variable diameter shaft structure, the bottom end diameter is larger than the shaft body diameter, and is clearance matched with the inner wall of the first support tube; the first support shaft bottom end presses the first spring into the first support tube, and the first spring contacts the first lower bottom seal; the first upper head is a circular ring structure, which is fixed at the upper end of the first support tube to prevent the bottom end of the first support shaft from escaping from the upper part of the first support tube; the shaft body of the first support shaft is clearance matched with the inner ring of the first upper head ring; the top end of the first support shaft is rotatably connected to the extension part I on the edge of the upper sealing cover through a rotating shaft, or the top end of the first support shaft is fixed to the extension part II on the edge of the lower sealing cover through a fastening bolt.

[0016] Furthermore, a notch is provided on the outer side of the extending portion I of the edge of the upper sealing cover, and the length of the notch along the axial direction of the rotating shaft is not less than the diameter of the rotating shaft.

[0017] Further, the second support assembly includes a second support shaft, a second upper head, a second support cylinder, a second spring and a second lower bottom cover;

[0018] The second support tube is vertically fixed on the outer circumference of the cylinder, and the second lower bottom seal is encapsulated at one end of the second support tube; the second upper head is a circular ring structure and is fixed to the other end of the second support tube; the second support shaft is clearance-matched with the inner wall of the second support tube, one end extends from the second upper head and is fixedly connected to the extension part Ⅱ of the edge of the upper sealing cover, and the second spring is pressed into the second support tube at the other end, and the second spring is in contact with the second lower bottom seal; at the same time, a shaft shoulder is provided on the second support shaft for contacting and limiting with the extension part Ⅱ of the edge of the upper sealing cover.

[0019] Furthermore, two sets of wall-mounted mounting seats are distributed on the upper and lower outer walls of the cylinder to realize the wall-mounted installation of the carbon dioxide absorption device.

[0020] Furthermore, an electric plug is provided on the outer wall of the cylinder for supplying power to the fan.

[0021] Beneficial effects:

[0022] 1. When the carbon dioxide absorption device of the utility model is required to work, it is only necessary to open the lock, and the upper sealing cover and the lower sealing cover are automatically opened under the action of the elastic force of the supporting assembly, and the carbon dioxide absorption device can be switched to the working state. The carbon dioxide absorption device can be switched to the sealing state by locking the lock, which has the characteristics of simple structure and easy operation.

[0023] 2. The medicine module of the utility model includes a medicine ventilation outer cylinder, medicine and medicine ventilation inner cylinder airflow. The medicine is annular and penetrates and absorbs the medicine through the medicine ventilation outer cylinder. The medicine is sucked into the medicine ventilation inner cylinder by the fan and then discharged back into the cabin, thereby reducing the airflow penetrating the medicine bed height. Here, the bed height is the distance between the medicine ventilation outer cylinder and the medicine ventilation inner cylinder. Compared with the prior art in which the medicine height is used as the bed height, the medicine resistance is reduced and the power consumption of the carbon dioxide absorption device is reduced.

[0024] 3. The through hole on the mounting seat of the utility model is a tapered hole, which can reduce airflow resistance. At the same time, the diameter of the small-diameter end of the tapered hole is equal to the diameter of the medicine ventilation inner cylinder, which can realize the positioning of the medicine ventilation inner cylinder.

[0025] 4. The first support shaft of the utility model is a variable diameter shaft structure, the bottom end diameter is larger than the shaft body diameter, and is matched with the first support tube clearance, which can ensure the first support shaft to slide smoothly in the first support tube and prevent the first support shaft from falling out of the first support tube.

[0026] 5. According to the utility model, the fan can be removed or replaced by removing the fastening bolts of the first supporting assembly on the lower sealing cover and taking off the lower sealing cover, thus meeting the demand for rapid maintenance in emergency situations during actual use.

[0027] 6. The outer wall of the cylinder of the utility model is provided with two sets of wall-mounted mounting seats, which facilitates the installation of the carbon dioxide absorption device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the sealing state of the carbon dioxide absorption device of the utility model.

[0029] Figure 2 It is a schematic diagram and a cross-sectional diagram of the working state of the carbon dioxide absorption device of the utility model.

[0030] Figure 3 This is a schematic diagram of the state of replacing the carbon dioxide absorbent of the utility model.

[0031] Figure 4 It is a gas flow diagram of the carbon dioxide absorption device of the utility model.

[0032] Figure 5 This is a schematic diagram of the structure of the first supporting assembly of the utility model.

[0033] Figure 6 This is a schematic diagram of the structure of the second supporting assembly of the utility model.

[0034] Among them, 1-upper sealing cover, 2-cylinder, 3-lower sealing cover, 4-lock, 5-wall-mounted mounting base, 6-first support assembly, 7-second support assembly, 8-electric plug, 9-medicine ventilation outer cylinder, 10-medicine, 11-medicine ventilation inner cylinder, 12-mounting base, 13-fan, 14-ventilation ring, 15-O-ring, 16-rotating shaft, 61-first support shaft, 62-first upper head, 63-first support cylinder, 64-first spring, 65-first lower bottom seal, 71-second support shaft, 72-second upper head, 73-second support cylinder, 74-second spring, 75-second lower bottom seal. DETAILED DESCRIPTION

[0035] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0036] The utility model provides a fast-sealed carbon dioxide absorption device, such as Figures 1 to 3 As shown, it includes an upper sealing cover 1, a cylinder 2, a lower sealing cover 3, a medicine module, a fan 13, a mounting seat 12, a first supporting assembly 6, a second supporting assembly 7 and a lock 4.

[0037] The cylinder 2 is a cylindrical stainless steel cylinder with a thickness of 4 mm. The carbon dioxide absorption device has a pressure resistance of 0.5 MPa. An O-ring 15 is provided on the upper end surface of the cylinder 2 for sealing the sealing cover 1 on the carbon dioxide absorption device. The upper sealing cover 1 is installed on the upper end of the cylinder 2 through the first supporting assembly 6 and the second supporting assembly 7, and is locked by the lock buckle 4 to achieve sealing; when the lock buckle 4 is unlocked, the first supporting assembly 6 and the second supporting assembly 7 drive the upper sealing cover 1 to pop open (at this time, the upper sealing cover 1 and the cylinder 2 are not separated), and the upper sealing cover 1 can be separated from the cylinder 2 through the second supporting assembly 7 and flipped over by the first supporting assembly 6; the lower sealing cover 3 is installed at the lower end of the cylinder 2 through the first supporting assembly 6, and is locked by the lock buckle 4 to achieve sealing, and a groove for fixing the O-ring 15 is provided on the lower sealing cover 3 for installing the O-ring 15; when the lock buckle 4 is unlocked, the first supporting assembly 6 drives the lower sealing cover 3 to pop open (at this time, the lower sealing cover 3 and the cylinder 2 are not separated); in this embodiment, three sets of lock buckles 4 are evenly distributed on the upper and lower ends of the cylinder 2, respectively, and locking the lock buckle 4 can compress the O-ring 15 of the cylinder 2 and the lower sealing cover 3 to achieve the locking and sealing of the device. The medicine module is arranged in the cylinder 2 through the mounting seat 12 for absorbing carbon dioxide, and the fan 13 is fixed at the bottom of the mounting seat 12. At the same time, a through hole is provided on the mounting seat 12 to communicate with the air inlet of the fan. An electric plug 8 is provided on the outer wall of the cylinder 2 for supplying power to the fan 13, and a watertight aviation plug with a pressure resistance greater than 0.5MPa is used.

[0038] Specifically, the medicine module includes a medicine ventilation outer cylinder 9, a medicine 10 and a medicine ventilation inner cylinder 11; the upper end of the medicine ventilation outer cylinder 9 is connected and fixed to the upper end of the cylinder body 2 through a ventilation ring 14, and the lower end of the medicine ventilation outer cylinder 9 is limited in the annular groove of the mounting seat 12, and can be fixed by welding; the medicine ventilation inner cylinder 11 is located in the medicine ventilation outer cylinder 9, the medicine ventilation inner cylinder 11 is connected to the through hole on the mounting seat 12, the medicine ventilation inner cylinder 11 is fixed to the mounting seat 12, and can be fixed by welding; the medicine 10 is arranged between the medicine ventilation inner cylinder 11 and the medicine ventilation outer cylinder 9, and the medicine 10 is annular.

[0039] In this embodiment, the medicine ventilation outer cylinder 9 is a cylindrical structure formed by rolling stainless steel plate mesh; the ventilation ring 14 is a circular ring structure made of stainless steel plate mesh; the medicine ventilation inner cylinder 11 is a cylindrical structure formed by rolling stainless steel plate mesh. The medicine 10 is lithium hydroxide, calcium hydroxide or potassium superoxide.

[0040] As an improvement, the through hole on the mounting seat 12 is a tapered hole to reduce airflow resistance. The diameter of the tapered hole's small diameter end is equal to the diameter of the medicine ventilation inner cylinder 11, and is used to position the medicine ventilation inner cylinder 11; the large diameter end of the tapered hole contacts and seals the fan air inlet.

[0041] The outer edge of the upper sealing cover 1 is evenly distributed with one extension part I and two extension parts II. The outer side of the extension part I is provided with a notch. The extension part I is used to cooperate with the first support assembly 6. The center of the extension part II is provided with a circular hole. The extension part II on the upper sealing cover 1 is used to cooperate with the second support assembly 7. The outer edge of the lower sealing cover 3 is evenly distributed with three extension parts II. The center of the extension part II on the lower sealing cover 3 is provided with a circular hole for cooperation with the first support assembly 6.

[0042] like Figure 5 As shown, the first support assembly 6 includes a first support shaft 61, a first upper head 62, a first support cylinder 63, a first spring 64 and a first lower bottom cover 65; the first support cylinder 63 is vertically fixed on the outer circumference of the cylinder body 2, and the first lower bottom cover 65 is encapsulated at the bottom of the first support cylinder 63; the first support shaft 61 is a variable diameter shaft structure, the bottom end diameter is larger than the shaft body diameter, and is clearance matched with the inner wall of the first support cylinder 63; the first support shaft 61 presses the first spring 64 into the first support cylinder 63 at the bottom end, and the first spring 64 is in contact with the first lower bottom cover 65; the first upper head 62 is a circular ring structure, which is fixed at the upper end of the first support cylinder 63 to prevent the bottom end of the first support shaft 61 from escaping from the upper part of the first support cylinder 63; the shaft body of the first support shaft 61 is clearance matched with the inner ring of the circular ring of the first upper head 62.

[0043] When the first support shaft 61 is connected to the extension part I of the edge of the upper sealing cover 1, the top of the first support shaft 61 is rotatably connected to the extension part I of the edge of the upper sealing cover 1 through the rotating shaft 16, the top of the first support shaft 61 is provided with a rotating shaft mounting hole I, and the extension part I is provided with a rotating shaft mounting hole II perpendicular to the opening direction of the notch, and the rotating shaft 16 simultaneously passes through the rotating shaft mounting hole I and the rotating shaft mounting hole II to position the first support shaft 61 in the notch, so that the upper sealing cover 1 can be turned around the rotating shaft 16. The length of the notch along the axis direction of the rotating shaft 16 is not less than the diameter of the rotating shaft 16.

[0044] When the first support shaft 61 is connected to the extension part II of the edge of the lower sealing cover 3 , the top end of the first support shaft 61 is fixed in the circular hole of the extension part II of the edge of the lower sealing cover 3 by means of a fastening bolt.

[0045] like Figure 6As shown, the second support assembly 7 includes a second support shaft 71, a second upper head 72, a second support cylinder 73, a second spring 74 and a second lower bottom cover 75; the second support cylinder 73 is vertically fixed to the outer circumference of the cylinder body 2, and the second lower bottom cover 75 is encapsulated at one end of the second support cylinder 73; the second upper head 72 is a circular ring structure and is fixed to the other end of the second support cylinder 73; the second support shaft 71 and the inner wall clearance of the second support cylinder 73 are matched to ensure that the second support shaft 71 slides smoothly in the second support cylinder 73, one end of the second support shaft 71 extends out from the second upper head 72 and is fixedly connected to the circular hole of the extension portion II of the edge of the upper sealing cover 1 by fastening bolts, and the other end of the second support shaft 71 presses the second spring 74 into the second support cylinder 73, and the second spring 74 contacts the second lower bottom cover 75; at the same time, a shaft shoulder is provided on the second support shaft 71 for contacting and limiting with the extension portion II of the edge of the upper sealing cover 1. When the upper sealing cover 1 is unlocked by the lock buckle 4, the second support shaft 71 moves upward under the elastic force of the second spring 74 but is not separated from the second support tube 73. The second support shaft 71 can be separated from the second support tube 73 under the action of external force.

[0046] Preferably, two sets of wall-mounted mounting seats 5 are distributed on the upper and lower outer walls of the cylinder 2 for realizing the wall-mounted installation of the carbon dioxide absorption device.

[0047] When in use, the outer peripheral lock buckle 4 of the upper sealing cover 1 and the lower sealing cover 3 of the carbon dioxide absorption device is opened, the upper sealing cover 1 is lifted up under the elastic force of the springs in the first supporting assembly 6 and the second supporting assembly 7, and the O-ring 15 at the upper end of the cylinder 2 is released to form an air inlet gap with the upper end of the cylinder 2; the lower sealing cover 3 falls under the action of the first spring 64 in the first supporting assembly 6 and its own gravity, and the O-ring 15 in the lower sealing cover 3 is released to form an air outlet gap with the lower end of the cylinder 2, as shown in FIG. Figure 4 As shown. After the fan 13 is started, the fan 13 forces the air to be treated, which is rich in carbon dioxide, in the cabin to enter the device through the ventilation ring 14. Under the action of the fan 13, the airflow passes through the medicine ventilation outer cylinder 9 and penetrates the medicine 10. The carbon dioxide in the air reacts with the medicine 10 and is absorbed and purified. The purified air is sucked into the cabin by the fan 13 through the medicine ventilation inner cylinder 11 and then discharged back into the cabin.

[0048] If the medicine 10 needs to be replaced, the upper sealing cover 1 is lifted upwards to make the second support shaft 71 completely separate from the second support tube 73, and then the upper sealing cover 1 is turned over. The upper sealing cover 1 is turned over and opened under the action of the rotating shaft 16.

[0049] If the fan 13 needs to be maintained or replaced, the fastening bolts on the lower sealing cover 3 for fixing the first support shaft 61 are removed, so as to remove the lower sealing cover 3 and then the fan 13 can be removed or replaced.

[0050] When water enters the cabin and the carbon dioxide absorption device needs to be sealed, the fan 13 is turned off and the three lock buckles 4 on the outer circumference of the upper sealing cover 1 and the lower sealing cover 3 are locked to ensure that when the carbon dioxide absorption device is subjected to a water pressure of 0.5 MPa, seawater will not enter the device and damage the fan 13 and other electrical components.

[0051] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fast-sealed carbon dioxide absorption device, characterized in that: It includes an upper sealing cover, a cylinder, a lower sealing cover, a medicine module, a fan, a mounting seat, a first supporting assembly, a second supporting assembly and a lock; The upper sealing cover is installed on the upper end of the cylinder body through the first supporting assembly and the second supporting assembly, and is sealed by locking with a lock; when the lock is unlocked, the first supporting assembly and the second supporting assembly drive the upper sealing cover to pop open, and an air inlet gap is formed between the upper sealing cover and the upper end of the cylinder body, and the upper sealing cover can be separated from the cylinder body through the second supporting assembly and flipped over by the first supporting assembly; the lower sealing cover is installed on the lower end of the cylinder body through the first supporting assembly, and is sealed by locking with a lock; when the lock is unlocked, the first supporting assembly drives the lower sealing cover to pop open, and an air outlet gap is formed between the lower sealing cover and the lower end of the cylinder body; the medicine module is arranged in the cylinder body through a mounting seat for absorbing carbon dioxide, and the fan is fixed at the bottom of the mounting seat, and a through hole is provided on the mounting seat to communicate with the air inlet of the fan.

2. The fast-sealed carbon dioxide absorption device according to claim 1, characterized in that: The medicine module comprises a medicine ventilation outer cylinder, a medicine and a medicine ventilation inner cylinder; The upper end of the medicine ventilation outer cylinder is connected and fixed to the upper end of the cylinder body through a ventilation ring, and the lower end of the medicine ventilation outer cylinder is limited in the annular groove of the mounting seat; the medicine ventilation inner cylinder is located in the medicine ventilation outer cylinder, and the medicine ventilation inner cylinder is connected to the through hole on the mounting seat; the medicine is arranged between the medicine ventilation inner cylinder and the medicine ventilation outer cylinder.

3. The fast-sealed carbon dioxide absorption device according to claim 2, characterized in that: The through hole on the mounting seat is a tapered hole, the diameter of the tapered hole at the small diameter end is equal to the diameter of the medicine ventilation inner cylinder, and is used for positioning the medicine ventilation inner cylinder; the large diameter end of the tapered hole contacts and seals with the fan air inlet.

4. The fast-sealed carbon dioxide absorption device according to claim 2, characterized in that: The medicine ventilation outer cylinder is a cylindrical structure formed by rolling a stainless steel plate mesh; the ventilation ring is a circular ring structure made of a stainless steel plate mesh; the medicine ventilation inner cylinder is a cylindrical structure formed by rolling a stainless steel plate mesh.

5. The fast-sealed carbon dioxide absorption device according to claim 2, characterized in that: The medicament is lithium hydroxide, calcium hydroxide or potassium superoxide.

6. The rapid sealing carbon dioxide absorption device according to claim 2, characterized in that: The first support assembly includes a first support shaft, a first upper head, a first support cylinder, a first spring and a first lower bottom cover; The first support tube is vertically fixed on the outer circumference of the tube body, and the first lower bottom seal is encapsulated at the bottom of the first support tube; the first support shaft is a variable diameter shaft structure, the bottom end diameter is larger than the shaft body diameter, and is clearance matched with the inner wall of the first support tube; the first support shaft bottom end presses the first spring into the first support tube, and the first spring contacts the first lower bottom seal; the first upper head is a circular ring structure, which is fixed at the upper end of the first support tube to prevent the bottom end of the first support shaft from escaping from the upper part of the first support tube; the shaft body of the first support shaft is clearance matched with the inner ring of the first upper head ring; the top end of the first support shaft is rotatably connected to the extension part I on the edge of the upper sealing cover through a rotating shaft, or the top end of the first support shaft is fixed to the extension part II on the edge of the lower sealing cover through a fastening bolt.

7. The rapid sealing carbon dioxide absorption device according to claim 6, characterized in that: A notch is provided on the outer side of the edge extension portion I of the upper sealing cover, and the length of the notch along the axis direction of the rotating shaft is not less than the diameter of the rotating shaft.

8. The rapid sealing carbon dioxide absorption device according to claim 6, characterized in that: The second support assembly includes a second support shaft, a second upper head, a second support cylinder, a second spring and a second lower bottom cover; The second support tube is vertically fixed on the outer circumference of the cylinder, and the second lower bottom seal is encapsulated at one end of the second support tube; the second upper head is a circular ring structure and is fixed to the other end of the second support tube; the second support shaft is clearance-matched with the inner wall of the second support tube, one end extends from the second upper head and is fixedly connected to the extension part Ⅱ of the edge of the upper sealing cover, and the second spring is pressed into the second support tube at the other end, and the second spring is in contact with the second lower bottom seal; at the same time, a shaft shoulder is provided on the second support shaft for contacting and limiting with the extension part Ⅱ of the edge of the upper sealing cover.

9. The fast-sealed carbon dioxide absorption device according to any one of claims 1 to 8, characterized in that: Two sets of wall-mounted mounting seats are distributed on the upper and lower outer walls of the cylinder, and are used to realize the wall-mounted installation of the carbon dioxide absorption device.

10. The fast-sealed carbon dioxide absorption device according to claim 9, characterized in that: The outer wall of the cylinder is provided with an electric plug for supplying power to the fan.

Images