A purification method for catalytically decomposing formaldehyde and odor air pollution

Abstract

The present invention discloses a purification method for catalytically decomposing formaldehyde and odor air pollution, and relates to the technical field of air purification. The method comprises the following steps: S1, filtering stage: discharging air into the purification device, and filtering the air using the primary filter inside the device; S2, adsorption stage: the air will enter the adsorption layer after preliminary filtration, and the adsorption of harmful gases in the air will be completed through the adsorption layer; S3, catalytic decomposition stage: the air after adsorption carries the adsorbed pollutants, and then enters the catalytic decomposition zone, and uses a specific catalyst to chemically react with the adsorbed harmful substances, S4, clean air discharge. The invention uses the coordinated use of the guide component and the auxiliary component to improve the gas flow while ensuring that the gas can fully contact with the catalytic metal rod in the catalytic chamber, and completes the cleaning of the catalytic metal rod during the purification process, thereby effectively improving the air purification efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of air purification, in particular to a purification method for catalytically decomposing formaldehyde and odor air pollution. Background Art

[0002] Air purification refers to the use of various technologies and methods to remove pollutants, germs, odors and other harmful substances in the air, improve indoor air quality and protect human health. With the increasing severity of environmental pollution, especially the increasing prominence of indoor air pollution, air purification technology has become increasingly important. Among them, catalytic decomposition of formaldehyde and odor air pollution is a technology that uses catalysts to promote chemical reactions to degrade harmful substances and purify the air.

[0003] In the prior art, a Chinese patent with publication number "CN211098044U" discloses an air purification device. After a large amount of dust adheres to the activated carbon mesh, the air re-enters the box body driven by the first fan, thereby increasing the wind pressure on the activated carbon mesh. At this time, the pressure sensor will feed back a signal to the controller. When the preset value is reached, the controller will start the alarm to remind the user to clean or replace the activated carbon mesh in time, thereby ensuring the high efficiency of the purification equipment and solving the problem that the activated carbon filter in the existing purification equipment is easily blocked, resulting in poor ventilation performance.

[0004] In the process of air purification, most of the time, a filter is used to complete the initial filtration of the gas, and then the harmful gas in the air is adsorbed through an adsorption net. Finally, the catalyst reacts chemically with the harmful substances in the air to complete the catalytic decomposition. In this process, most of the objects with a large specific surface area are used as carriers of the catalyst. However, in the process of catalytic degradation, the catalyst and the harmful substances in the air will produce scale. When there is too much scale, it will cover the catalyst on the original carrier, thereby reducing the catalytic efficiency. In addition, the air after filtration and adsorption cannot be quickly and evenly distributed in the purification equipment, which will lead to a low catalytic decomposition effect of the catalyst. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a method for catalytically decomposing formaldehyde and odorous air pollution, which solves the problems mentioned in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A method for catalytically decomposing formaldehyde and odorous air pollution, comprising the following steps:

[0008] S1, filtration stage: the air is discharged into the purification device and the primary filter inside it is used to filter the air;

[0009] S2, adsorption stage: After preliminary filtration, the air will enter the adsorption layer, and the adsorption of harmful gases in the air will be completed through the adsorption layer;

[0010] S3, catalytic decomposition stage: the air after adsorption carries the adsorbed pollutants and then enters the catalytic decomposition zone, where a specific catalyst is used to chemically react with the adsorbed harmful substances;

[0011] S4. Clean air emissions: After catalytic decomposition, pollutants in the air have been completely converted into carbon dioxide and water vapor, and these harmless substances will be discharged;

[0012] The purification device in S1 includes a purification tank, the inner bottom of which is fixedly connected to an air inlet pipe, the upper part of which is fixedly connected to an exhaust pipe, and a filter screen and an adsorption screen are fixedly installed inside the purification tank;

[0013] A diverter plate and a guide plate are fixedly installed inside the purification tank and above the adsorption net, and the upper half of the purification tank is divided into a catalytic chamber and an installation chamber by the diverter plate and the guide plate;

[0014] The diverter plate is provided with a flow guide component, through which the gas after filtration and adsorption can flow evenly to the inside of the catalytic chamber;

[0015] An auxiliary component is arranged inside the installation cavity, and the effect and efficiency of air catalysis are improved by the auxiliary component.

[0016] Preferably, the auxiliary component includes a motor fixedly mounted on the purification tank, an output shaft is fixedly mounted on the output end of the motor, a mounting block is fixedly mounted on the output shaft, an inner bottom of the mounting block is provided with an inclined surface, a driving rod is movably mounted on the inclined surface, a guide block is fixedly mounted on the bottom end of the driving rod, and a subversion plate is fixedly mounted on the bottom end of the guide block.

[0017] Preferably, one end of the output shaft away from the motor extends to the interior of the installation cavity, the drive rod and the guide block are arranged in a V shape, the subversion plate is arranged at an angle, the exhaust pipe is fixedly connected to the catalytic cavity, and the filter is located below the adsorption net.

[0018] Preferably, a plurality of mounting tubes are fixedly mounted on the lower end surface of the guide plate, a sliding block is slidably mounted inside the mounting tube, a catalytic metal rod is fixedly mounted on the sliding block, the top end of the catalytic metal rod extends to the top of the guide plate, a first spring is fixedly connected to the lower end surface of the sliding block, and one end of the first spring away from the sliding block is fixedly connected to the inner bottom of the mounting tube.

[0019] Preferably, a telescopic rod and a second spring are fixedly installed on the inner top of the installation cavity, a downward pressure head is fixedly installed on the output end of the telescopic rod, the bottom end of the second spring is fixedly connected to the downward pressure head, and the second spring is located on the outside of the telescopic rod.

[0020] Preferably, a through hole is formed on the lower end surface of the mounting tube, an annular brush is fixedly mounted inside the through hole, and the bottom end of the catalytic metal rod passes through the through hole and contacts with the bristles on the annular brush.

[0021] Preferably, the flow guide assembly includes a connecting tube fixedly mounted on the diversion plate, a diversion pipe is fixedly mounted on the top of the connecting tube, a hose is fixedly connected to the diversion pipe, a flow guide tube is fixedly mounted on one end of the hose away from the diversion pipe, and a plurality of discharge pipes are fixedly connected to the flow guide tube.

[0022] Preferably, a linkage rod is fixedly installed at one end of the guide tube away from the hose, a mounting frame is rotatably installed at the top of the linkage rod, a transmission rod is fixedly installed on the mounting frame, an arc block is fixedly installed at one end of the transmission rod away from the mounting frame, and a cam is fixedly installed on the output shaft.

[0023] Preferably, a mounting plate is fixedly mounted on the transmission rod, a third spring is fixedly mounted on the mounting plate, one end of the third spring away from the mounting plate is fixedly connected to the inside of the mounting cavity, and a fan plate is fixedly mounted on the side end surface of the guide tube.

[0024] Preferably, a first through groove and a second through groove are formed on the side end surface of the purification tank, the end of the linkage rod away from the guide tube passes through the first through groove, and the linkage rod is rotatably connected to the inside of the first through groove through a rotating pin, a sealing gasket is fixedly installed on the linkage rod, and the end of the sealing gasket away from the linkage rod is fixedly installed inside the first through groove, and the end of the transmission rod away from the mounting frame passes through the second through groove.

[0025] The present invention provides a purification method for catalytically decomposing formaldehyde and odorous air pollution. Compared with the prior art, it has the following beneficial effects:

[0026] 1. The present invention drives the mounting block on the output shaft to rotate by a motor, and uses the driving rod and the guide block on the mounting block to rotate the subversion plate. At the same time, the subversion plate is pressed down by the pressing head through the action of the second spring and the telescopic rod, and the lower end surface of the subversion plate is in contact with the surface of the guide plate to rotate and swing. The subversion plate is used to press down the catalytic metal rod on the guide plate in turn, so that the catalytic metal rod is in turn in uniform contact with the gas in the catalytic chamber;

[0027] 2. In the present invention, when the catalytic metal rod is not pressed down by the subversion plate, the catalytic metal rod after being lowered will be restored to its original position by the elastic force of the first spring and the limit of the sliding block. During the return process of the catalytic metal rod, the scale on the catalytic metal rod is cleaned by the annular brush on the through hole, thereby effectively maintaining the activity of the catalytic metal rod, thereby improving the overall purification efficiency of the purification device;

[0028] 3. In the present invention, when the output shaft rotates, the cam is synchronously driven to rotate. Through the cooperation between the cam and the arc block and the action of the third spring, the transmission rod is in a state of reciprocating movement. The transmission rod then drives the linkage rod to swing around the rotating pin through the action of the mounting frame. The linkage rod drives the guide tube to be in a swinging state. Through the swing of the guide tube, the gas discharged from the discharge pipe can quickly flow inside the catalyst chamber, ensuring sufficient contact between the gas and the catalytic metal rod.

[0029] 4. In the present invention, during the swinging of the guide tube, the fan plate will be driven to swing, and the swinging of the fan plate will further accelerate the flow of gas discharged from the exhaust pipe, and the gas will be quickly dispersed in the catalytic chamber through the diffusion effect of the airflow. The uniform distribution of the airflow helps to increase the contact area between the gas and the catalytic metal rod, thereby improving the efficiency of the catalytic reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0031] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0032] Figure 3 is a cross-sectional view of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of the subversion plate in the present invention;

[0034] Figure 5 It is a structural schematic diagram of the guide plate in the present invention;

[0035] Figure 6 It is a schematic diagram of the internal structure of the installation cylinder in the present invention;

[0036] Figure 7 It is a structural schematic diagram of the cam in the present invention;

[0037] Figure 8 It is a schematic diagram of the structure of the branch flow guide pipe in the present invention.

[0038] In the figure: 1, purification tank; 2, air inlet pipe; 3, exhaust pipe; 4, filter screen; 5, adsorption screen; 6, diverter plate; 7, guide plate; 8, catalytic chamber; 9, mounting chamber; 10, motor; 11, output shaft; 12, mounting block; 13, inclined surface; 14, driving rod; 15, guide block; 16, subversion plate; 17, mounting cylinder; 18, sliding block; 19, catalytic metal rod; 20, first spring; 21, telescopic rod; 22. Second spring; 23. Down-pressure head; 24. Through hole; 25. Annular brush; 26. Connecting pipe; 27. Diverter pipe; 28. Hose; 29. ​​Guide pipe; 30. Discharge pipe; 31. Linkage rod; 32. Mounting frame; 33. Transmission rod; 34. Arc block; 35. Cam; 36. Mounting plate; 37. Third spring; 38. Fan plate; 39. First through slot; 40. Second through slot; 41. Sealing cushion. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figure 1-8 The present invention is a method for catalytically decomposing formaldehyde and odor air pollution, comprising the following steps:

[0041] S1, filtration stage: the air is discharged into the purification device and the primary filter inside it is used to filter the air;

[0042] S2, adsorption stage: After preliminary filtration, the air will enter the adsorption layer, and the adsorption of harmful gases in the air will be completed through the adsorption layer;

[0043] S3, catalytic decomposition stage: the air after adsorption carries the adsorbed pollutants and then enters the catalytic decomposition zone, where a specific catalyst is used to chemically react with the adsorbed harmful substances;

[0044] S4. Clean air emissions: After catalytic decomposition, pollutants in the air have been completely converted into carbon dioxide and water vapor, and these harmless substances will be discharged;

[0045] Among them, the purification device in S1 includes a purification tank 1, the inner bottom of the purification tank 1 is fixedly connected with an air inlet pipe 2, the upper part of the purification tank 1 is fixedly connected with an exhaust pipe 3, and a filter screen 4 and an adsorption screen 5 are fixedly installed inside the purification tank 1. The filter screen 4 is located below the adsorption screen 5. The filter screen 4 is used to complete the initial filtration of the air, and the adsorption screen 5 is used to complete the adsorption of harmful gases in the air. Since the adsorption screen 5 and the filter screen 4 are both well-known technologies to those skilled in the art, they are not described in detail here. A support leg is fixedly installed at the bottom of the purification tank 1, and the extended part of the air inlet pipe 2 can be fixed on the support leg;

[0046] A diverter plate 6 and a guide plate 7 are fixedly installed inside the purification tank 1 and above the adsorption net 5. The upper half of the purification tank 1 is divided into a catalytic chamber 8 and a mounting chamber 9 by the diverter plate 6 and the guide plate 7, wherein the cross-sectional shapes of the diverter plate 6 and the guide plate 7 are both V-shaped;

[0047] An auxiliary component is provided inside the installation cavity 9, and the effect and efficiency of air catalysis are improved by the auxiliary component. The auxiliary component includes a motor 10 fixedly installed on the purification tank 1, an output shaft 11 is fixedly installed on the output end of the motor 10, a mounting block 12 is fixedly installed on the output shaft 11, an inclined surface 13 is provided on the inner bottom of the mounting block 12, a driving rod 14 is movably installed on the inclined surface 13, a guide block 15 is fixedly installed on the bottom end of the driving rod 14, and a subversion plate 16 is fixedly installed on the bottom end of the guide block 15, the output shaft 11 extends from one end of the motor 10 to the inside of the installation cavity 9, the driving rod 14 and the guide block 15 are arranged in a V shape, the subversion plate 16 is arranged in an inclined manner, and the exhaust pipe 3 is fixedly connected to the catalytic cavity 8;

[0048] A plurality of mounting cylinders 17 are fixedly mounted on the lower end surface of the guide plate 7, a sliding block 18 is slidably mounted inside the mounting cylinder 17, a catalytic metal rod 19 is fixedly mounted on the sliding block 18, the top end of the catalytic metal rod 19 extends to the top of the guide plate 7, a first spring 20 is fixedly connected to the lower end surface of the sliding block 18, one end of the first spring 20 away from the sliding block 18 is fixedly connected to the inner bottom of the mounting cylinder 17, a telescopic rod 21 and a second spring 22 are fixedly mounted on the inner top of the mounting cavity 9, a lower pressure head 23 is fixedly mounted on the output end of the telescopic rod 21, the bottom end of the second spring 22 is fixedly connected to the lower pressure head 23, and the position of the second spring 22 is at the extension position. On the outside of the retracted rod 21, a through hole 24 is provided on the lower end surface of the mounting tube 17, and an annular brush 25 is fixedly installed inside the through hole 24. The bottom end of the catalytic metal rod 19 passes through the through hole 24 and contacts the bristles on the annular brush 25. The end of the catalytic metal rod 19 is set as an arc, which reduces the friction between the subversion plate 16 and the catalytic metal rod 19, making it easier for the subversion plate 16 to press down the catalytic metal rod 19. In this scheme, the rotation speed of the motor 10 is relatively slow, ensuring that the catalytic metal rod 19 can contact the harmful substances in the air. The bottom end of the downward pressure head 23 is always in a fit with the subversion plate 16 through the action of the second spring 22.

[0049] In this article, the mounting block 12 on the output shaft 11 is driven to rotate by the motor 10, and the driving rod 14 and the guide block 15 on the mounting block 12 are used to rotate the subversion plate 16. At the same time, the subversion plate 16 is pressed down by the pressing head 23 through the action of the second spring 22 and the telescopic rod 21, and the lower end surface of the subversion plate 16 will fit the surface of the guide plate 7 to rotate and swing. The subversion plate 16 is used to press down the catalytic metal rod 19 on the guide plate 7 in turn, so that the catalytic metal rod 19 is in turn uniformly contacted with the gas in the catalytic chamber 8. When the catalytic metal rod 19 is not pressed down by the subversion plate 16, the catalytic metal rod 19 after descending will be restored to its original position through the elastic force of the first spring 20 and the limit of the sliding block 18. During the return process of the catalytic metal rod 19, the scale on the catalytic metal rod 19 is cleaned by the annular brush 25 on the through hole 24, which effectively maintains the activity of the catalytic metal rod 19, thereby improving the overall purification efficiency of the purification device.

[0050] A flow guide component is provided on the diverter plate 6, through which the gas after filtration and adsorption can flow evenly to the interior of the catalytic chamber 8, the flow guide component includes a connecting pipe 26 fixedly mounted on the diverter plate 6, a diverter pipe 27 fixedly mounted on the top of the connecting pipe 26, a hose 28 fixedly connected to the diverter pipe 27, a flow guide pipe 29 fixedly mounted on the end of the hose 28 away from the diverter pipe 27, a plurality of discharge pipes 30 fixedly connected to the flow guide pipe 29, a linkage rod 31 fixedly mounted on the end of the diverter pipe 29 away from the hose 28, a mounting frame 32 rotatably mounted on the top of the linkage rod 31, a transmission rod 33 fixedly mounted on the mounting frame 32, an arc block 34 fixedly mounted on the end of the transmission rod 33 away from the mounting frame 32, a cam 35 fixedly mounted on the output shaft 11, a mounting plate 36 fixedly mounted on the transmission rod 33, and a mounting plate 36 fixedly mounted on the mounting plate 36. A third spring 37 is installed, and one end of the third spring 37 away from the mounting plate 36 is fixedly connected to the inside of the mounting cavity 9. A fan plate 38 is fixedly installed on the side end surface of the guide tube 29. A first through groove 39 and a second through groove 40 are provided on the side end surface of the purification tank 1. One end of the linkage rod 31 away from the guide tube 29 passes through the first through groove 39, and the linkage rod 31 is rotatably connected to the inside of the first through groove 39 through a rotating pin. A sealing gasket 41 is fixedly installed on the linkage rod 31, and one end of the sealing gasket 41 away from the linkage rod 31 is fixedly installed in the inside of the first through groove 39, and one end of the transmission rod 33 away from the mounting frame 32 passes through the second through groove 40, wherein the connecting pipe 26 is used to facilitate the discharge of the filtered and adsorbed gas into the inside of the catalytic chamber 8, and the sealing gasket 41 is used to ensure the sealing of the catalytic chamber 8 to prevent unpurified gas from flowing out of the outside of the purification tank 1.

[0051] In this article, when the output shaft 11 rotates, the cam 35 will be driven to rotate synchronously. Through the cooperation between the cam 35 and the arc block 34 and the action of the third spring 37, the transmission rod 33 is in a reciprocating state. The transmission rod 33 then drives the linkage rod 31 to swing around the rotating pin through the action of the mounting frame 32. The linkage rod 31 is used to drive the guide tube 29 to be in a swinging state. The swing of the guide tube 29 allows the gas discharged from the exhaust pipe 30 to circulate quickly inside the catalytic chamber 8, ensuring sufficient contact between the gas and the catalytic metal rod 19. In the process of the swinging of the guide tube 29, the fan plate 38 will be driven to swing. The swing of the fan plate 38 will further accelerate the flow of the gas discharged from the exhaust pipe 30, and the gas will be quickly dispersed inside the catalytic chamber 8 through the diffusion effect of the airflow. The uniform distribution of the airflow helps to increase the contact area between the gas and the catalytic metal rod 19, thereby enhancing the efficiency of the catalytic reaction.

[0052] Working principle:

[0053] When in use, the gas to be purified is discharged into the purification tank 1 through the air inlet pipe 2. The gas passes through the filter screen 4 and the adsorption net 5 respectively by utilizing the principle of gas rising. The filter screen 4 is used to complete the primary filtration of the air, and the adsorption net 5 is used to complete the adsorption of harmful gases in the air. The gas after filtration and adsorption will enter the shunt pipe 27 through the connecting pipe 26. The gas in the shunt pipe 27 will pass through the discharge pipe 30 on the guide pipe 29 and be discharged into the interior of the catalytic chamber 8.

[0054] The motor 10 drives the mounting block 12 on the output shaft 11 to rotate, and the driving rod 14 and the guide block 15 on the mounting block 12 are used to rotate the subversion plate 16. At the same time, the subversion plate 16 is pressed down by the pressing head 23 through the action of the second spring 22 and the telescopic rod 21, and the lower end surface of the subversion plate 16 will fit the surface of the guide plate 7 to rotate and swing. The subversion plate 16 is used to press down the catalytic metal rod 19 on the guide plate 7 in turn, so that the catalytic metal rod 19 is in turn uniformly contacted with the gas in the catalytic chamber 8. When the catalytic metal rod 19 is not pressed down by the subversion plate 16, the catalytic metal rod 19 after descending will be restored to its original position by the elastic force of the first spring 20 and the limit of the sliding block 18. In the process of the catalytic metal rod 19 returning, the scale on the catalytic metal rod 19 is cleaned by the annular brush 25 on the through hole 24.

[0055] When the output shaft 11 rotates, the cam 35 will be driven to rotate synchronously. Through the cooperation between the cam 35 and the arc block 34 and the action of the third spring 37, the transmission rod 33 is in a reciprocating state. The transmission rod 33 then drives the linkage rod 31 to swing around the rotating pin through the action of the mounting frame 32. The linkage rod 31 is used to drive the guide tube 29 to be in a swinging state. The swing of the guide tube 29 allows the gas discharged from the exhaust pipe 30 to circulate quickly inside the catalytic chamber 8, ensuring sufficient contact between the gas and the catalytic metal rod 19. In the process of the swinging of the guide tube 29, the fan plate 38 will be driven to swing. The swing of the fan plate 38 will further accelerate the flow of the gas discharged from the exhaust pipe 30, and the gas will be quickly dispersed inside the catalytic chamber 8 through the diffusion effect of the airflow. The uniform distribution of the airflow helps to increase the contact area between the gas and the catalytic metal rod 19.

[0056] In the present technical solution, the existing fan can be used in conjunction with the exhaust pipe 3 to discharge the purified gas from the purification tank 1. Since this technology is well known to people in this field, it will not be described in detail here. At the same time, when the annular brush 25 is used to remove the deposits on the catalytic metal rod 19, only the deposits with poor adhesion can be removed, and the deposits on the catalytic metal rod 19 cannot be completely removed. In addition, according to the needs of personnel, the surface of the guide plate 7 can be set as a heating layer so that the heating layer is inside the catalytic chamber 8. The heating layer can be used to improve the removal of harmful substances in the air. It should be noted that the catalyst on the catalytic metal rod 19 does not contain heat-sensitive materials to avoid catalytic decomposition of the catalytic metal rod 19.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0058] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A method for catalytically decomposing formaldehyde and odorous air pollution, characterized in that: The following steps are involved: S1, filtration stage: the air is discharged into the purification device and the primary filter inside it is used to filter the air; S2, adsorption stage: After preliminary filtration, the air will enter the adsorption layer, and the adsorption of harmful gases in the air will be completed through the adsorption layer; S3, catalytic decomposition stage: the air after adsorption carries the adsorbed pollutants and then enters the catalytic decomposition zone, where a specific catalyst is used to chemically react with the adsorbed harmful substances; S4. Clean air emission: After catalytic decomposition, pollutants in the air have been completely converted into carbon dioxide and water vapor, and these harmless substances are directly discharged; The purification device in S1 comprises a purification tank (1), the inner bottom of the purification tank (1) is fixedly connected to an air inlet pipe (2), the upper part of the purification tank (1) is fixedly connected to an exhaust pipe (3), and a filter screen (4) and an adsorption screen (5) are fixedly installed inside the purification tank (1); A flow divider plate (6) and a guide plate (7) are fixedly installed inside the purification tank (1) and above the adsorption net (5); the upper half of the purification tank (1) is divided into a catalytic chamber (8) and a mounting chamber (9) by the flow divider plate (6) and the guide plate (7); The diverter plate (6) is provided with a flow guide component, through which the gas after filtration and adsorption can flow evenly into the interior of the catalytic chamber (8); An auxiliary component is arranged inside the installation cavity (9), and the air catalysis effect and efficiency are improved by the auxiliary component; The auxiliary component comprises a motor (10) fixedly mounted on the purification tank (1), an output shaft (11) fixedly mounted on the output end of the motor (10), a mounting block (12) fixedly mounted on the output shaft (11), an inner bottom of the mounting block (12) provided with an inclined surface (13), a driving rod (14) movably mounted on the inclined surface (13), a guide block (15) fixedly mounted on the bottom end of the driving rod (14), a subversion plate (16) fixedly mounted on the bottom end of the guide block (15), a plurality of mounting cylinders (17) fixedly mounted on the lower end surface of the guide plate (7), the interior of the mounting cylinder (17) A sliding block (18) is slidably mounted, a catalytic metal rod (19) is fixedly mounted on the sliding block (18), a first spring (20) is fixedly connected to the lower end surface of the sliding block (18), a telescopic rod (21) and a second spring (22) are fixedly mounted on the inner top of the mounting cavity (9), a pressing head (23) is fixedly mounted on the output end of the telescopic rod (21), a through hole (24) is formed on the lower end surface of the mounting cylinder (17), an annular brush (25) is fixedly mounted inside the through hole (24), and the bottom end of the catalytic metal rod (19) passes through the through hole (24) and contacts the bristles on the annular brush (25); The flow guide assembly comprises a connecting pipe (26) fixedly mounted on the flow dividing plate (6), a flow dividing pipe (27) fixedly mounted on the top end of the connecting pipe (26), a hose (28) fixedly connected to the flow dividing pipe (27), a flow guide pipe (29) fixedly mounted on one end of the hose (28) away from the flow dividing pipe (27), a plurality of discharge pipes (30) fixedly connected to the flow guide pipe (29), a linkage rod (31) fixedly mounted on one end of the flow guide pipe (29) away from the hose (28), and a mounting frame (32) rotatably mounted on the top end of the linkage rod (31). ), a transmission rod (33) is fixedly mounted on the mounting frame (32), an arc block (34) is fixedly mounted on one end of the transmission rod (33) away from the mounting frame (32), a cam (35) is fixedly mounted on the output shaft (11), a mounting plate (36) is fixedly mounted on the transmission rod (33), a third spring (37) is fixedly mounted on the mounting plate (36), one end of the third spring (37) away from the mounting plate (36) is fixedly connected to the inside of the mounting cavity (9), and a fan plate (38) is fixedly mounted on the side end surface of the guide tube (29).

2. A method for purifying air pollution by catalytically decomposing formaldehyde and odor according to claim 1, characterized in that: One end of the output shaft (11) away from the motor (10) extends to the interior of the mounting cavity (9), the drive rod (14) and the guide block (15) are arranged in a V shape, the subversion plate (16) is arranged at an angle, the exhaust pipe (3) is fixedly connected to the catalytic cavity (8), and the filter screen (4) is located below the adsorption screen (5).

3. The method for purifying air pollution by catalytically decomposing formaldehyde and odor according to claim 1, characterized in that: The top end of the catalytic metal rod (19) extends above the guide plate (7), and one end of the first spring (20) away from the sliding block (18) is fixedly connected to the inner bottom of the mounting cylinder (17).

4. The method for purifying air pollution by catalytically decomposing formaldehyde and odor according to claim 1, characterized in that: The bottom end of the second spring (22) is fixedly connected to the lower pressure head (23), and the second spring (22) is located outside the telescopic rod (21).

5. The method for purifying air pollution by catalytically decomposing formaldehyde and odor according to claim 1, characterized in that: A first through slot (39) and a second through slot (40) are formed on a side end surface of the purification tank (1); an end of the linkage rod (31) away from the guide tube (29) passes through the first through slot (39); and the linkage rod (31) is rotatably connected to the inside of the first through slot (39) via a rotating pin; a sealing cushion (41) is fixedly mounted on the linkage rod (31); an end of the sealing cushion (41) away from the linkage rod (31) is fixedly mounted inside the first through slot (39); and an end of the transmission rod (33) away from the mounting frame (32) passes through the second through slot (40).

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