Gas impurity removal and adsorption device

Abstract

The invention relates to the technical field of gas impurity removal, in particular to a gas impurity removal adsorption device which comprises a box body, a plurality of carbon plates, a pressure sensor, a replacement box, a mounting box, a push-out mechanism used for pushing the topmost carbon plate into the replacement box, and a push-in mechanism used for pushing the unadsorbed carbon plate in the mounting box into the position below the carbon plate in the box body. The sealing element is used for changing the sealing state / communication state of the replacement box, the mounting box and the box body; the lifting mechanism is used for bearing and upwards pushing the non-adsorbed carbon plate; the limiting plate is slidably inserted into the inner side wall of the box body through a reset spring; the ventilation mechanism is used for enabling gas below the carbon plate in the box body to enter the replacement box, and a ventilation part is arranged at the top of the side wall of the replacement box. Activated carbon in the device can be conveniently replaced, waste of the activated carbon is reduced as much as possible, the workload of workers is reduced, meanwhile, the automation degree of the device can be improved, and the environment is protected.

Description

Technical Field

[0001] The invention relates to the technical field of gas impurity removal, and in particular to a gas impurity removal adsorption device. Background Art

[0002] Gas impurity removal refers to the removal of unwanted impurities from gas to obtain pure target gas. This process is very important in the chemical, environmental protection, pharmaceutical, food and other industries. Common methods for gas impurity removal are divided into physical methods, chemical methods and biological methods. Among them, the most common physical method is to use activated carbon to adsorb impurities in the gas.

[0003] Activated carbon is a specially treated carbon material with a highly developed microporous structure and a large specific surface area. It can effectively adsorb a variety of impurities in the gas and has a wide range of applications. Activated carbon adsorption is a physical process and does not produce harmful byproducts. However, the adsorption capacity of activated carbon will decrease with the increase of usage time, and it needs to be replaced regularly to ensure the adsorption capacity of activated carbon.

[0004] Referring to the Chinese patent document with authorization publication number CN118079597B and announcement date May 28, 2024, entitled "A partitioned activated carbon adsorption box", multiple storage areas are set for rotational use, and the flow rate of the exhaust gas is detected by the first wind speed sensor and the second wind speed sensor, thereby detecting the degree of adsorption of pollutants by the activated carbon. When the activated carbon adsorbs a large amount of pollutants, it can automatically replace another storage area for adsorption. At the same time, the activated carbon that needs to be replaced in the storage area is automatically discharged, and new activated carbon is added to the storage area.

[0005] With respect to the above-mentioned related technologies, when the gas passes through the activated carbon, the impurities in the gas are adsorbed by the activated carbon, thereby obtaining a pure target gas. However, when the activated carbon is adsorbing, the activated carbon close to the air inlet adsorbs more impurities, and the activated carbon far from the air inlet adsorbs fewer impurities. When the activated carbon is replaced, activated carbons with different degrees of contamination are replaced together, resulting in the waste of activated carbons with less contamination. Summary of the invention

[0006] In view of this, the present invention provides a gas impurity removal adsorption device, aiming to solve the technical problem of activated carbon waste caused during the activated carbon replacement process in the impurity removal device in the prior art.

[0007] In order to solve the above technical problems, the present invention provides a gas impurity removal and adsorption device, which adopts the following technical solutions: a gas impurity removal and adsorption device, comprising a box body, a plurality of carbon plates arranged vertically inside the box body, and a pressure sensor; a replacement box and an installation box are arranged outside the box body, the box body is provided with a pushing mechanism for pushing the topmost carbon plate into the replacement box, the box body is provided with a pushing mechanism, the pushing mechanism is used to push the non-absorbed carbon plate in the installation box to below the carbon plate in the box body, the box body is provided with a sealing member for changing the sealing state / connection state of the replacement box, the installation box and the box body, and the box body is provided with a lifting mechanism for receiving and pushing the non-absorbed carbon plate upward; a limit plate is slidably inserted into the inner wall of the box body through a reset spring, one side of the limit plate is inclined and can abut against the non-absorbed carbon plate; a ventilation mechanism is used to allow the gas below the carbon plate in the box body to enter the replacement box, and the top of the side wall of the replacement box is provided with a ventilation member located above the topmost carbon plate and capable of sealing / connecting the replacement box and the box body.

[0008] By adopting the above technical scheme, the carbon plates that adsorb more pollutants can be pushed out preferentially, and the non-absorbed carbon plates can be pushed under the original carbon plates in the box. The setting of the rising mechanism and the limit plate enables the non-absorbed carbon plates to move upward and be neatly arranged with the original carbon plates in the box, which is convenient for the continuous use of the device. It can ensure the adsorption capacity of the box and facilitate the removal of impurities from the gas, and at the same time, the carbon plates can be replaced without stopping the machine, thereby improving work efficiency. Compared with the above-mentioned device with multiple storage areas, the gas flow rate is larger, which is conducive to improving work efficiency. The ventilation mechanism and ventilation parts are set to prevent the unpurified gas in the box from flowing out of the box as much as possible, thereby protecting the health of the staff and protecting the environment.

[0009] Optionally, the ejection mechanism includes a first operating box, a first push block and a first push rod. The first operating box is connected to the interior of the box. The first push block is slidably inserted in the first operating box. One end of the first push block extends into the interior of the box and abuts against one side of the topmost carbon plate in the box. The first push rod is horizontally placed and fixedly connected to the outer wall of the replacement box. The first push block is fixedly connected to the output end of the first push rod.

[0010] By adopting the above technical solution, the first push rod drives the first push block to move and push out the top carbon plate, which is easy to control. The first operating box is set to provide installation space to avoid the outflow of unpurified gas in the box as much as possible.

[0011] Optionally, the pushing mechanism includes a second operating box, a second push block and a second push rod, the second operating box is connected to the interior of the installation box, the second push block is slidably inserted in the second operating box, one end of the second push block extends into the interior of the installation box and abuts against one side of the carbon plate in the installation box, the second push rod is horizontally placed and fixedly connected to the outer wall of the box body, and the second push block is fixedly connected to the output end of the second push rod.

[0012] By adopting the above technical solution, the second push rod drives the second push block to move and push the carbon plate in the installation box into the box body, which is easy to control. A second operating box is set up to provide installation space to avoid the outflow of unpurified gas in the box as much as possible.

[0013] Optionally, the seals are provided in two groups and correspond one to one with the replacement box and the installation box, the seals include a sealing baffle and a sealing push rod, the sealing push rod is vertically placed and fixedly connected to the outer wall of the box body, the sealing baffle is fixedly connected to the output end of the sealing push rod, and the two sealing baffles are slidably inserted between the replacement box and the box body, and between the installation box and the box body, respectively.

[0014] By adopting the above technical solution, when taking out and replacing the carbon plates in the box and putting the carbon plates into the installation box, the sealing partition is used to reduce the outflow of unpurified gas in the box.

[0015] Optionally, the lifting mechanism includes a lifting box, a receiving block and a lifting push rod. The lifting box is connected to the interior of the box body, the receiving block is vertically slidably inserted into the interior of the lifting box, one end of the receiving block extends into the interior of the box body, the lifting push rod is vertically placed and fixedly connected to the outer wall of the box body, and the receiving block is fixedly connected to the output end of the lifting push rod.

[0016] By adopting the above technical solution, the riser box provides installation space to avoid the outflow of unpurified gas in the box as much as possible.

[0017] Optionally, the ventilation mechanism includes a ventilation duct and a negative pressure fan, one end of the ventilation duct is connected to the bottom of the box body, and the other end of the ventilation duct is connected to the bottom of the replacement box. The negative pressure fan is arranged in the ventilation duct and is used to allow the gas below the carbon plate in the box body to enter the replacement box.

[0018] By adopting the above technical scheme, the negative pressure fan allows the gas below the carbon plate in the box to enter the top of the carbon plate in the box through the ventilation pipe and the replacement box. Under the action of air pressure, the gas above the carbon plate in the box is filtered by the carbon plate and flows to the bottom of the carbon plate in the box, thereby reducing the impurities contained in the gas in the box, improving the purity of the gas in the box, and avoiding the situation where unpurified gas flows out of the box as much as possible.

[0019] Optionally, the ventilation component includes a ventilation baffle, and a side wall of the replacement box is provided with a ventilation port located above the topmost carbon plate and connected to the inside of the box body, the top of the ventilation baffle is hinged to the top wall of the ventilation port, and the inner wall of the replacement box is connected to a baffle for preventing the ventilation baffle from rotating toward the replacement box.

[0020] By adopting the above technical solution, when the negative pressure fan is working, the ventilation baffle is rotated under the action of air pressure, and the stability of the baffle lifting device is set.

[0021] Optionally, a first door panel that is locked / unlocked by a buckle is hinged on the side wall of the replacement box, and a second door panel that is locked / unlocked by a buckle is hinged on the bottom of the installation box.

[0022] By adopting the above technical solution, it is convenient to take out the carbon plate in the replacement box and to place the carbon plate in the installation box.

[0023] In summary, the present invention includes the following beneficial technical effects: 1. First, after the device has been used for a period of time, the carbon plates at the top of the box absorb more pollutants, while the carbon plates at the bottom of the box absorb less pollutants. The top carbon plate is pushed out of the box, and a new carbon plate that has not been absorbed is pushed under the existing carbon plate in the box to achieve the purpose of replacing the saturated carbon plate in the box, ensuring the adsorption capacity of the box, and reducing the waste caused by the carbon plates not being fully used during the replacement process; Secondly, compared with the previous setting of multiple storage areas, the gas flow in the box is larger, which can improve the impurity removal efficiency of the device, and the carbon plate is easier to replace, move and handle, and it is not easy to cause dust and other residues, reducing the need for cleaning the device; Thirdly, when the rising mechanism drives the unabsorbed carbon plate to move upward, the unabsorbed carbon plate abuts against the limit plate and compresses the reset spring. When the unabsorbed carbon plate moves upward together with the original carbon plate in the box, the limit plate slides under the action of the reset spring and supports the multi-layer carbon plate in the box, which can not only improve the automation degree of the device, but also facilitate the device to work multiple times and reduce the workload of the staff. Fourthly, the provision of seals, ventilation mechanisms and ventilation parts can minimize the flow of unpurified gas out of the box, protect the environment and reduce the harm to the health of workers.

[0024] 2. The push rod is used as the driving structure, which has a stable structure, is easy to control, and is convenient for automatic operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 is a cross-sectional schematic diagram of an embodiment of the present invention; Figure 3 for Figure 2 A partial enlarged schematic diagram of part A; Figure 4 Schematic diagram of the structure of the first pushing block and the second pushing block in an embodiment of the present invention.

[0026] Explanation of the reference numerals: 1. Box body; 011. Air inlet; 012. Air outlet; 2. Carbon plate; 3. Pressure sensor; 4. Replacement box; 5. Installation box; 6. Push-out mechanism; 61. First operating box; 62. First push block; 63. First push rod; 7. Push-in mechanism; 71. Second operating box; 72. Second push block; 73. Second push rod; 8. Sealing element; 81. Sealing partition; 82. Sealing push rod; 9. Rising mechanism; 91. Rising box; 92. Receiving block; 93. Rising push rod; 10. Limiting plate; 11. Ventilation mechanism; 111. Ventilation duct; 112. Negative pressure fan; 12. Ventilation element; 121. Ventilation partition; 122. Ventilation port; 123. Baffle; 13. First door panel; 14. Second door panel. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0028] The following is combined with Figure 1 -Attached Figure 4 The present invention is described in further detail.

[0029] The embodiment of the present invention discloses a gas impurity removal adsorption device.

[0030] Reference Figures 1 to 4 A gas impurity removal adsorption device comprises a box 1, a plurality of carbon plates 2 and a pressure sensor 3. The box 1 is hollow inside, an air inlet 011 is provided on the top of the box 1, an air outlet 012 is provided on the bottom of the box 1, the carbon plates 2 are placed horizontally, and the plurality of carbon plates 2 are arranged vertically inside the box 1. The gas enters the box 1 from the air inlet 011 on the top of the box 1, and flows out from the air outlet 012 of the box 1 after being filtered by the plurality of carbon plates 2. The pressure sensor 3 is arranged at the top of the cavity inside the box 1. The pressure sensor 3 is used to detect the air pressure above the carbon plates 2 inside the box 1. If the top carbon plate 2 adsorbs too much pollutants, the ventilation capacity of the top carbon plate 2 becomes poor, and the pressure at the top of the box 1 increases. The pressure sensor 3 detects that when the pressure increases, the carbon plate 2 on the top of the box 1 is replaced.

[0031] Reference Figure 1 and Figure 2A replacement box 4 and an installation box 5 connected to the interior of the box 1 are provided on the outer wall of the box body 1. The replacement box 4 and the installation box 5 are both rectangular as a whole. The replacement box 4 and the installation box 5 are arranged vertically and the replacement box 4 is located above the installation box 5. A pushing mechanism 6 for pushing the top carbon plate 2 into the replacement box 4 is provided on the box body 1, and a pushing mechanism 7 for pushing the unabsorbed carbon plate 2 in the installation box 5 into the box body 1 below the carbon plate 2 is provided on the box body 1.

[0032] Reference Figure 1 and Figure 3 The box body 1 is provided with a sealing member 8 for changing the sealing state / communication state between the replacement box 4, the installation box 5 and the box body 1.

[0033] Reference Figure 1 , Figure 2 and Figure 4 A lifting mechanism 9 is provided in the box body 1 for receiving and pushing the unabsorbed carbon plate 2 upward.

[0034] Reference Figure 2 and Figure 4 A plurality of limit plates 10 are arranged in the circumferential direction of the box body 1 and are slidably inserted into the inner wall of the box body 1 through a return spring. The top surface of the limit plate 10 is used to support the carbon plate 2 in the box body 1. The side of the limit plate 10 close to the central axis of the box body 1 is inclined from top to bottom in the direction away from the central axis of the box body 1, and the inclined surface of the limit plate 10 abuts against the non-adsorbed carbon plate 2.

[0035] Reference Figure 1 , Figure 2 and Figure 3 A ventilation mechanism 11 is provided in the box body 1 for allowing the gas below the carbon plate 2 in the box body 1 to enter the replacement box 4. A ventilation component 12 is provided on the top of the side wall of the replacement box 4, which is located above the top carbon plate 2 and can seal / connect the replacement box 4 and the box body 1.

[0036] After the device has been used for a period of time, the carbon plate 2 at the top inside the box 1 adsorbs more pollutants, while the carbon plate 2 at the bottom inside the box 1 adsorbs fewer pollutants. The top carbon plate 2 is pushed out of the box 1, and a new carbon plate 2 that has not been adsorbed is pushed under the existing carbon plate 2 in the box 1, so as to achieve the purpose of replacing the saturated carbon plate 2 in the box 1, ensure the adsorption capacity of the box 1, and reduce the waste caused by the carbon plate 2 not being fully used during the replacement process.

[0037] Compared with the previous method of setting up multiple storage areas, the gas flow in the box 1 is larger, which can improve the impurity removal efficiency of the device. The carbon plate 2 is also easier to replace, move and handle, and is not easy to cause dust and other residues, reducing the need for cleaning the device.

[0038] When the lifting mechanism 9 drives the non-absorbed carbon plate 2 to move upward, the non-absorbed carbon plate 2 abuts against the limit plate 10 and compresses the reset spring. When the non-absorbed carbon plate 2 moves upward together with the original carbon plate 2 in the box body 1, the limit plate 10 slides under the action of the reset spring and supports the multi-layer carbon plates 2 in the box body 1, which can not only improve the degree of automation of the device, but also facilitate the device to work multiple times and reduce the workload of the staff.

[0039] The sealing member 8, the ventilation mechanism 11 and the ventilation member 12 can reduce the flow of unpurified gas to the outside of the box 1 as much as possible, protect the environment and reduce the harm to the health of the staff.

[0040] Reference Figure 1 , Figure 2 and Figure 4 The ejection mechanism 6 includes a first operation box 61, a first push block 62 and a first push rod 63. The first operation box 61 is in a rectangular shape as a whole, and the first operation box 61 is connected to the inside of the box body 1. The first push block 62 is slidably inserted into the first operation box 61. One end of the first push block 62 extends into the inside of the box body 1 and abuts against one side of the top carbon plate 2 in the box body 1. The first push rod 63 is horizontally placed and fixedly connected to the outer side wall of the replacement box 4. The first push block 62 is fixedly connected to the output end of the first push rod 63.

[0041] The first push rod 63 drives the first push block 62 to move and push out the top carbon plate 2 in the box body 1, and pushes the carbon plate 2 into the replacement box 4 for easy control. The first operating box 61 can provide installation space, reduce conflicts between devices, and help to avoid the outflow of unpurified gas in the box body 1 as much as possible.

[0042] Reference Figure 1 , Figure 2 and Figure 4 The push mechanism 7 includes a second operating box 71, a second push block 72, and a second push rod 73. The second operating box 71 is in a rectangular shape as a whole, and the second operating box 71 is connected to the inside of the installation box 5. The second push block 72 is slidably inserted into the second operating box 71, and one end of the second push block 72 extends into the inside of the installation box 5 and abuts against one side of the carbon plate 2 in the installation box 5. The second push rod 73 is horizontally placed and fixedly connected to the outer wall of the box body 1, and the second push block 72 is fixedly connected to the output end of the second push rod 73.

[0043] The second push rod 73 drives the second push block 72 to move and push the carbon plate 2 in the installation box 5 into the box body 1, which is easy to control. The second operation box 71 can provide installation space, reduce conflicts between devices, and help to avoid the outflow of unpurified gas in the box body 1 as much as possible.

[0044] Reference Figure 1 , Figure 2 and Figure 3There are two sets of seals 8, and the two sets of seals 8 correspond to the replacement box 4 and the installation box 5 one by one. The seals 8 include a sealing partition 81 and a sealing push rod 82. The sealing push rod 82 is vertically placed and fixedly connected to the outer wall of the box body 1, and the sealing partition 81 is fixedly connected to the output end of the sealing push rod 82. The two sealing partitions 81 are slidably inserted between the replacement box 4 and the box body 1, and between the installation box 5 and the box body 1.

[0045] When the carbon plate 2 in the replacement box 4 is taken out and the carbon plate 2 is put into the installation box 5, the sealing is performed by the sealing partition 81 to reduce the outflow of the unpurified gas in the box body 1.

[0046] Reference Figure 1 and Figure 4 The rising mechanism 9 includes a rising box 91, a receiving block 92 and a rising push rod 93. The rising box 91 is connected to the inside of the box body 1. The receiving block 92 is vertically slidably inserted into the inside of the rising box 91. One end of the receiving block 92 extends into the inside of the box body 1. The rising push rod 93 is vertically placed and fixedly connected to the outer wall of the box body 1. The receiving block 92 is fixedly connected to the output end of the rising push rod 93.

[0047] The riser box 91 provides installation space to prevent the unpurified gas in the box body 1 from flowing out as much as possible.

[0048] Reference Figure 1 , Figure 2 and Figure 3 The ventilation mechanism 11 includes a ventilation duct 111 and a negative pressure fan 112. One end of the ventilation duct 111 is connected to the bottom of the box body 1, and the other end of the ventilation duct 111 is connected to the bottom of the replacement box 4. The negative pressure fan 112 is arranged in the ventilation duct 111 and is used to allow the gas below the carbon plate 2 in the box body 1 to enter the replacement box 4.

[0049] The negative pressure fan 112 allows the gas below the carbon plate 2 in the box 1 to enter the top of the carbon plate 2 in the box 1 through the ventilation duct 111 and the replacement box 4. Under the action of air pressure, the gas above the carbon plate 2 in the box 1 is filtered by the carbon plate 2 and then flows to the bottom of the carbon plate 2 in the box 1, thereby reducing the impurities contained in the gas in the box 1, improving the purity of the gas in the box 1, and avoiding the situation where unpurified gas flows out of the box 1 as much as possible.

[0050] Reference Figure 1 , Figure 2 and Figure 3 The ventilation component 12 includes a ventilation baffle 121. The side wall of the replacement box 4 is provided with a ventilation port 122 located above the top carbon plate 2 and connected to the interior of the box body 1. The top of the ventilation baffle 121 is hinged to the top wall of the ventilation port 122. The inner wall of the replacement box 4 is connected to a baffle 123 for preventing the ventilation baffle 121 from rotating toward the replacement box 4.

[0051] When the negative pressure fan 112 is working, the air exchange baffle 121 rotates under the action of air pressure, and the baffle 123 is provided to enhance the stability of the device.

[0052] Reference Figure 1 and Figure 2 A first door panel 13 that is locked / unlocked by a buckle is hinged on the side wall of the replacement box 4, and a second door panel 14 that is locked / unlocked by a buckle is hinged on the bottom of the installation box 5.

[0053] It is convenient to take out the carbon plate 2 in the replacement box 4 and to place the carbon plate 2 in the installation box 5.

[0054] The implementation principle of a gas impurity removal adsorption device according to an embodiment of the present invention is as follows: When the pressure sensor 3 detects that the pressure at the top of the box body 1 reaches a certain value, the carbon plate 2 in the box body 1 is replaced.

[0055] Start the first push rod 63 to push the top carbon plate 2 in the box body 1 into the replacement box 4; start the second push rod 73 to push the unabsorbed carbon plate 2 in the installation box 5 into the box body 1, and the receiving block 92 in the box body 1 receives the unabsorbed carbon plate 2; start the rising push rod 93 to drive the unabsorbed carbon plate 2 to move upward, and during the movement of the unabsorbed carbon plate 2, it abuts against the sliding block and compresses the reset spring, and the unabsorbed carbon plate 2 abuts against the bottom surface of the original carbon plate 2 in the box body 1, and the rising push rod 93 drives multiple carbon plates 2 in the box body 1 to move upward synchronously. After moving into place, the bottom carbon plate 2 is separated from the sliding block, and the reset spring pushes the sliding block, and the top surface of the sliding block supports the carbon plate 2; the number and position of the carbon plates 2 in the box body 1 are restored to the initial setting state, which is convenient for repeated use of the pushing mechanism 6, the pushing mechanism 7, the rising mechanism 9, etc.

[0056] Before taking out the carbon plate 2 in the replacement box 4, you can choose to start the negative pressure fan 112 to filter the top gas in the box 1 through the carbon plate 2, which can reduce the impurities contained in the gas in the box 1. The sealing push rod 82 pushes the sealing partition 81 to seal the replacement box 4, and the carbon plate 2 in the replacement box 4 is taken out through the first door panel 13 on the side of the replacement box 4. The environment and the staff can be protected in the process.

[0057] When placing a new unabsorbed carbon plate 2 into the installation box 5, the sealing push rod 82 pushes the sealing partition 81 to seal the installation box 5, and the carbon plate 2 is placed through the second door panel 14 at the bottom of the installation box 5 for easy use.

[0058] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A gas impurity removal adsorption device, comprising a box (1), a plurality of carbon plates (2) arranged vertically inside the box (1), and a pressure sensor (3), characterized in that: Also includes: A replacement box (4) and an installation box (5) are arranged outside the box body (1); the box body (1) is provided with a pushing mechanism (6) for pushing the topmost carbon plate (2) into the replacement box (4); the box body (1) is provided with a pushing mechanism (7); the pushing mechanism (7) is used to push the non-absorbed carbon plate (2) in the installation box (5) into the box body (1) below the carbon plate (2); the box body (1) is provided with a sealing member (8) for changing the sealing state / connection state between the replacement box (4), the installation box (5) and the box body (1); and the box body (1) is provided with a lifting mechanism (9) for receiving and pushing the non-absorbed carbon plate (2) upward; A limit plate (10) is slidably inserted into the inner wall of the box body (1) through a return spring, and one side of the limit plate (10) is inclined and can abut against the non-adsorbed carbon plate (2); A ventilation mechanism (11) is used to allow gas below the carbon plate (2) in the box body (1) to enter the replacement box (4); a ventilation component (12) is provided at the top of the side wall of the replacement box (4) and is located above the topmost carbon plate (2) and is capable of sealing / connecting the replacement box (4) and the box body (1).

2. A gas impurity removal adsorption device according to claim 1, characterized in that: The ejection mechanism (6) comprises a first operating box (61), a first push block (62) and a first push rod (63); the first operating box (61) is connected to the interior of the box body (1); the first push block (62) is slidably inserted into the first operating box (61); one end of the first push block (62) extends into the interior of the box body (1) and abuts against one side of the topmost carbon plate (2) in the box body (1); the first push rod (63) is horizontally placed and fixedly connected to the outer side wall of the replacement box (4); and the first push block (62) is fixedly connected to the output end of the first push rod (63).

3. A gas impurity removal adsorption device according to claim 1, characterized in that: The pushing mechanism (7) comprises a second operating box (71), a second pushing block (72) and a second pushing rod (73); the second operating box (71) is connected to the interior of the installation box (5); the second pushing block (72) is slidably inserted into the second operating box (71); one end of the second pushing block (72) extends into the interior of the installation box (5) and abuts against one side of the carbon plate (2) in the installation box (5); the second pushing rod (73) is horizontally placed and fixedly connected to the outer wall of the box body (1); and the second pushing block (72) is fixedly connected to the output end of the second pushing rod (73).

4. A gas impurity removal adsorption device according to claim 1, characterized in that: The sealing member (8) is provided in two groups and corresponds to the replacement box (4) and the installation box (5) one by one. The sealing member (8) comprises a sealing partition (81) and a sealing push rod (82). The sealing push rod (82) is vertically placed and fixedly connected to the outer wall of the box body (1). The sealing partition (81) is fixedly connected to the output end of the sealing push rod (82). The two sealing partitions (81) are respectively slidably inserted between the replacement box (4) and the box body (1), and between the installation box (5) and the box body (1).

5. A gas impurity removal adsorption device according to claim 1, characterized in that: The lifting mechanism (9) comprises a lifting box (91), a receiving block (92) and a lifting push rod (93); the lifting box (91) is connected to the interior of the box body (1); the receiving block (92) is vertically slidably inserted into the interior of the lifting box (91); one end of the receiving block (92) extends into the interior of the box body (1); the lifting push rod (93) is vertically placed and fixedly connected to the outer wall of the box body (1); and the receiving block (92) is fixedly connected to the output end of the lifting push rod (93).

6. A gas impurity removal adsorption device according to claim 1, characterized in that: The ventilation mechanism (11) comprises a ventilation duct (111) and a negative pressure fan (112); one end of the ventilation duct (111) is connected to the bottom of the box body (1), and the other end of the ventilation duct (111) is connected to the bottom of the replacement box (4); the negative pressure fan (112) is arranged in the ventilation duct (111) and is used to allow the gas below the carbon plate (2) in the box body (1) to enter the replacement box (4).

7. A gas impurity removal adsorption device according to claim 6, characterized in that: The ventilation component (12) comprises a ventilation baffle (121); a side wall of the replacement box (4) is provided with a ventilation port (122) located above the topmost carbon plate (2) and connected to the interior of the box body (1); a top end of the ventilation baffle (121) is hinged to a top wall of the ventilation port (122); and a baffle (123) is connected to an inner wall of the replacement box (4) for preventing the ventilation baffle (121) from rotating toward the replacement box (4).

8. A gas impurity removal adsorption device according to claim 1, characterized in that: The side wall of the replacement box (4) is hinged with a first door panel (13) that is locked / unlocked by a buckle, and the bottom of the installation box (5) is hinged with a second door panel (14) that is locked / unlocked by a buckle.

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