Movable air purification equipment

Abstract

The invention relates to the technical field of air purification, in particular to movable air purification equipment. The device comprises a filtering device, and a dredging device and a collecting device which are arranged in the filtering device. According to the air purifier, when the motor drives the fan blades to rotate through the transmission shaft so as to accelerate the speed of air passing through the air filter element, the control panel in reciprocating threaded connection with the transmission shaft can drive the elastic air bag to contract and stretch, the volume of the elastic air bag is increased during stretching, and negative pressure is formed in the elastic air bag to suck air purified by the air filter element; during compression, the size of the elastic air bag is reduced, air in the elastic air bag is compressed, enters the air injection structure through the exhaust pipe and then is sprayed out of the filter screen through the air flushing opening, so that blockages on the filter screen are impacted by airflow to fall off from the filter screen, the filter screen is prevented from being blocked, and the air purification efficiency of the equipment is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, in particular to a movable air purification device. Background Art

[0002] Air purification refers to the act of removing pollutants from the air to make the air clean. Through the corresponding air purification equipment, it can kill bacteria and disinfect, reduce dust and haze, remove harmful decoration residues and odors, etc., so as to improve living and working conditions and enhance physical and mental health.

[0003] Air purification equipment can be divided into fixed and mobile types according to the installation method. Mobile air purification equipment can be moved to the area that needs to be purified at will, is easy to operate, and is suitable for various environments and spaces. Fixed air purification equipment is not easy to move due to its fixed installation position. Its air purification effect depends entirely on the indoor air circulation efficiency and is greatly limited. For example, an air purification equipment involved in CN103272445B includes: a box body, and a primary air filter, a secondary air purification device, an activated carbon filter device, a high-efficiency filter, a data control center, and a fan sequentially placed in the box body; the primary air filter is a filter mesh, and the filter mesh is arranged at the air inlet of the air purification equipment; after the air enters the box body, it is treated by the primary air filter and then enters the secondary air purification device for purification, and then is treated by the activated carbon filter device and the high-efficiency filter and then discharged by the fan.

[0004] The air purification equipment in the above patent can perform physical and disinfection purification on the air twice to make the filtered air fresh and sterile, thereby achieving clean indoor air. However, the problem is that when the air is filtered and purified, the dust and other impurities in the air are blocked and accumulated by the filter. As the use time increases, a large amount of dust, particulate matter and other pollutants will accumulate on the filter. These substances will block the pores of the filter, thereby hindering air circulation, resulting in a decrease in air circulation, and reducing the air purification efficiency of the equipment.

[0005] In order to avoid filter clogging and ensure the air purification efficiency of the equipment, a movable air purification equipment is proposed. Summary of the invention

[0006] The object of the present invention is to provide a movable air purification device to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides a movable air purification device, comprising a filter device, a dredging device and a collecting device arranged in the filter device, wherein the collecting device is used to collect impurities;

[0008] The filtering device comprises a movable case and a filter body arranged at the top of the case, and the filter body is used to purify air;

[0009] The dredging device includes a ventilating body and an air blowing body located at both ends of the filter body. The ventilating body is used to accelerate the air passing through the filter body. The air blowing body is connected to the filter body in an up and down sliding manner. The ventilating body is connected to the air blowing body in a transmission manner. The ventilating body drives the air blowing body to reciprocate up and down along the filter body. When the air blowing body moves downward, air is collected. When the air blowing body moves upward, air is sprayed toward the filter body to drive the blockage to detach from the filter body and fall into the collecting device to be collected.

[0010] As a further improvement of the present technical solution, the filter body includes an inner frame located inside the chassis, both ends of the inner frame are fixedly connected with outer grille plates by bolts, the outer grille plates are snap-fitted with the outer wall of the top end of the chassis, an air filter element for sterilization and deodorization is arranged inside the inner frame, and filter nets for filtering out air impurities are arranged on both sides of the air filter element inside the inner frame.

[0011] As a further improvement of the present technical solution, the air filter element and the filter screen are both flat plate structures.

[0012] As a further improvement of the present technical solution, the ventilation body includes a ventilation plate and a transmission shaft rotatably connected to the ventilation plate, the ventilation plate is located between the air filter element and the filter screen, fan blades are arranged in the ventilation plate, the fan blades are engaged with the top end of the transmission shaft, a motor is engaged with the bottom end of the transmission shaft, and a first inner groove for accommodating the above-mentioned motor is opened in the middle part of the chassis.

[0013] As a further improvement of the present technical solution, a second inner groove is opened in the chassis at the top of the first inner groove, the air blowing body includes an elastic airbag located in the second inner groove and a control board connected to the bottom of the elastic airbag, the elastic airbag is connected to an air inlet pipe and an exhaust pipe, the air inlet pipe is used to control the unidirectional flow of gas into the elastic airbag, the exhaust pipe is used to control the unidirectional flow of gas out of the elastic airbag, the exhaust pipe is connected to an injection structure for injecting air into the filter, and the transmission shaft is reciprocatingly threaded with the control board.

[0014] As a further improvement of the technical solution, an air intake channel is provided at the bottom of the air filter element, and the air intake pipe is connected to the air intake channel.

[0015] As a further improvement of the present technical solution, a third inner groove is opened in the chassis on both sides of the second inner groove, and the jet structure includes an inner hollow plate located in the third inner groove, the bottom of the inner hollow plate is connected to two ends of the control panel, the inner hollow plate is located between the ventilation plate and the filter, the side wall of the inner hollow plate is connected to the inner frame for vertical sliding, the bottom of the inner hollow plate is connected to the exhaust pipe, and the top of the inner hollow plate is provided with an air outlet for airflow ejection near the filter.

[0016] As a further improvement of the technical solution, the surface of the inner end hollow plate is fitted with the surface of the filter screen, and the shape of the air outlet matches the shape of the filter hole of the filter screen.

[0017] As a further improvement of the present technical solution, the jet structure also includes an outer hollow plate located on the side of the filter screen away from the inner hollow plate, the bottom of the outer hollow plate is connected to the two ends of the control plate, the top of the outer hollow plate is close to the surface of the inner hollow plate on one side and is provided with a plate groove for receiving blockages, the bottom of the outer hollow plate is connected to the third inner groove, and the bottom of the third inner groove is connected to the collecting device.

[0018] As a further improvement of the present technical solution, the collecting device includes a bottom box which is plugged into the bottom of the chassis, a accommodating cavity for accommodating the blockage is provided in the bottom box, the top of the accommodating cavity is connected to the bottom of the third inner groove, and double-layer screens are provided at both ends of the bottom of the accommodating cavity for reducing the gas flow rate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the movable air purification device, the movable chassis can move the device to the area that needs to be purified to improve the ventilation condition and the environmental quality in time, and the air filter element and the filter screen are matched with each other through the inner frame to form a fixed matching module, and the inner frame is fixed to the chassis by the outer grille plate connected by bolts. When the life of the air filter element is exhausted, the air filter element and the filter screen can be directly replaced without replacing the entire device, thereby reducing costs.

[0021] 2. In the movable air purification device, when the motor drives the fan blades to rotate through the transmission shaft to accelerate the air flow rate through the air filter element, the control board connected to the transmission shaft with a reciprocating thread will drive the elastic airbag to contract and stretch. When stretched, the volume of the elastic airbag increases, and negative pressure is formed inside to inhale the air purified by the air filter element. When compressed, the volume of the elastic airbag decreases, and the gas inside the elastic airbag is compressed and enters the jet structure through the exhaust pipe, and then is ejected from the air outlet to the filter net, so that the blockage on the filter net is knocked off the filter net by the impact of the air flow, thereby avoiding blockage of the filter net to ensure the air purification efficiency of the equipment.

[0022] 3. In the movable air purification device, when the air outlet ejects airflow to cause the blockage to be separated from the filter, the airflow and the blockage carried by the airflow pass downward through the third inner groove into the collecting device to be collected, thereby avoiding the airflow to be blown out directly from the outer grille plate, and avoiding the problem of increased air impurity content caused by the blockage being blown directly into the outside air. After the gas is decelerated by the double-layer screen, it can be discharged smoothly outward, so that the bottom end of the air purification device discharges a smooth airflow, and the air is sucked in from the top end of the air purification device for purification, thereby forming a benign circulation flow of air and ensuring the air purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0025] Figure 3 It is a cross-sectional view of the structure of the filter device of the present invention;

[0026] Figure 4 It is a split cross-sectional view of the filter structure of the present invention;

[0027] Figure 5 It is a disassembled cross-sectional view of the dredging device structure of the present invention;

[0028] Figure 6 It is a cross-sectional view of the ventilation structure of the present invention;

[0029] Figure 7 It is a split cross-sectional view of the air-blowing body structure of the present invention;

[0030] Figure 8 It is a cross-sectional view of the structure of the collecting device of the present invention;

[0031] Fig. 9 Schematic diagram of gas flow in the present invention

[0032] The meaning of each number in the figure is:

[0033] 1. Filter device; 11. Chassis; 111. First inner tank; 112. Second inner tank; 113. Third inner tank; 12. Filter body; 121. Inner frame; 122. Outer grille plate; 123. Air filter element; 124. Filter screen; 125. Air intake channel;

[0034] 2. dredging device; 21. ventilation body; 211. ventilation plate; 2111. fan blade; 212. transmission shaft; 22. air blowing body; 221. elastic air bag; 2211. air inlet pipe; 2212. exhaust pipe; 222. control panel; 223. inner hollow plate; 2231. air flushing port; 224. outer hollow plate;

[0035] 3. Collecting device; 31. Bottom box; 32. Accommodating chamber; 33. Screen. DETAILED DESCRIPTION

[0036] The following will be combined with the accompanying drawings in 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.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] Air purification equipment is mainly divided into fixed and mobile types according to the installation method. Fixed air purification equipment can handle more air volume and is suitable for dealing with large-area air pollution problems. It is usually suitable for large-area, densely populated places, such as factories, office buildings, etc. However, the disadvantage of fixed air purification equipment is that it is large in size and needs to occupy a certain amount of ground space. It is not suitable for places with limited space. Moreover, due to its fixed installation, it cannot be moved as flexibly as mobile equipment. Its air purification effect depends entirely on the indoor air circulation efficiency and is greatly limited.

[0040] Therefore, please refer to Figure 1 , Figure 2 ,, Figure 3, Figure 5 As shown, the purpose of this embodiment is to provide a movable air purification device, including a filter device 1 and a dredging device 2 and a collecting device 3 arranged in the filter device 1, and the collecting device 3 is used to collect impurities;

[0041] The filter device 1 includes a movable chassis 11 and a filter body 12 disposed at the top of the chassis 11. There are many ways to realize the mobile function of the chassis 11. In this embodiment, the chassis 11 realizes the mobile effect through movable casters disposed at the bottom, and the filter body 12 is used to purify the air;

[0042] The dredging device 2 includes a ventilation body 21 and an air blowing body 22 located at both ends of the filter body 12. The ventilation body 21 is used to accelerate the air to pass through the filter body 12. The air blowing body 22 is connected to the filter body 12 by sliding up and down. The ventilation body 21 is connected to the air blowing body 22 by transmission. The ventilation body 21 is used to accelerate the air to pass through the filter body 12 to improve the air purification efficiency, and drive the air blowing body 22 to make up and down reciprocating motion along the filter body 12. When the air blowing body 22 moves downward, it collects the air purified by the filter body 12. When the air blowing body 22 moves upward, it sprays the collected air toward the filter body 12 to make the blockage of the filter body 12 fall off, and the sprayed airflow can drive the blockage to fall into the collecting device 3 and be collected.

[0043] The above structure is described below:

[0044] like Figure 3 , Figure 4 As shown, in order to purify the air, the filter body 12 includes an inner frame 121 located in the chassis 11, and the two ends of the inner frame 121 are fixedly connected with outer grille plates 122 by bolts. The outer grille plates 122 are snap-fitted with the outer wall of the top of the chassis 11. The inner frame 121 is fixed to the top of the chassis 11 through the outer grille plates 122 arranged at both ends. An air filter element 123 for sterilization and deodorization is arranged in the middle of the inner frame 121. Filter screens 124 for filtering air impurities are arranged on both sides of the air filter element 123 in the inner frame 121. The air filter element 123 and the filter screen 124 are both flat plate structures. The air filter element 123 and the filter screen 124 of the flat plate structure The advantages of the filter element 123 and the filter screen 124 mainly include a simple and compact structure and high mechanical strength. When the device is pushed to move, it will not be damaged due to accidental bumps. The device purifies the air through the air filter element 123 and the filter screen 124. The air filter element 123 and the filter screen 124 are fixed through the inner frame 121 to form a fixed matching module, and the inner frame 121 is fixed to the chassis 11 by the outer grille plate 122 connected by bolts. When the life of the air filter element 123 is exhausted, the air filter element 123 and the filter screen 124 can be directly replaced without replacing the entire device, thereby reducing costs.

[0045] During the air purification process, dust, hair and some debris in the air will gradually accumulate on the filter 124, forming a blockage, resulting in poor air circulation, which will affect the air purification efficiency of the air filter 123. The problem is that when the life of the air filter 123 has not yet expired, directly replacing the air filter 123 and the filter 124 can ensure the air purification efficiency of the device, but there is also a problem of wasting the life of the air filter 123. Therefore, in order to avoid the reduction of air purification efficiency due to the blockage of the filter 124 when the life of the air filter 123 has not yet expired, Figure 3 , Figure 4 , Figure 6 , Figure 7 As shown, the structures of the ventilating body 21 and the air blowing body 22 are disclosed below:

[0046] The ventilation body 21 includes a ventilation plate 211 and a transmission shaft 212 rotatably connected to the ventilation plate 211. The ventilation plate 211 is located between the air filter element 123 and the filter screen 124 in the inner frame 121. A fan blade 2111 for driving the gas flow is arranged in the ventilation port of the ventilation plate 211. The fan blade 2111 is engaged with the top end of the transmission shaft 212. The bottom end of the transmission shaft 212 is engaged with a motor for driving the transmission shaft 212 to rotate. A first inner groove 111 for accommodating the above-mentioned motor is opened in the middle part of the chassis 11. By setting the ventilation body 21, the transmission shaft 212 is driven to rotate by the motor, and then the fan blade 2111 is driven to rotate to accelerate the air flow rate through the air filter element 123, thereby ensuring that the air purification efficiency of the air filter element 123 will not be affected by the low air flow rate.

[0047] A second inner groove 112 is provided at the top of the first inner groove 111 in the chassis 11. The air blowing body 22 includes an elastic airbag 221 located in the second inner groove 112 and a control board 222 connected to the bottom of the elastic airbag 221. The elastic airbag 221 is connected to an air inlet pipe 2211 and an exhaust pipe 2212. The air inlet pipe 2211 is used to control the unidirectional flow of gas into the elastic airbag 221. The exhaust pipe 2212 is used to control the unidirectional flow of gas out of the elastic airbag 221. The air inlet pipe 2211, There are many ways to control the gas flow direction of the exhaust pipe 2212, such as a one-way air guide valve, which will not be described in detail in the present invention. The exhaust pipe 2212 is connected to an injection structure for injecting air to the filter 124. Reciprocating holes are opened at both ends of the control board 222. The transmission shaft 212 passes through the reciprocating holes and is reciprocatingly threadedly connected to the reciprocating holes. When the motor drives the fan blade 2111 to rotate through the transmission shaft 212, the control board 222 reciprocatingly threadedly connected to the transmission shaft 212 will move up and down in the second inner groove 112. The elastic airbag 221 moves, thereby driving the elastic airbag 221 connected to the control board 222 to shrink and stretch in the second inner groove 112. When stretching, the volume of the elastic airbag 221 increases, and a negative pressure is formed in the elastic airbag 221, and gas is sucked in from the outside through the air inlet pipe 2211. When compressed, the volume of the elastic airbag 221 decreases, and the gas inside the elastic airbag 221 is compressed and enters the jet structure through the exhaust pipe 2212, and then is ejected toward the filter screen 124 by the jet structure, so that the blockage on the filter screen 124 is impacted by the air flow and falls off the filter screen 124. An air intake channel 125 is provided at the bottom of the air filter element 123, and the air intake pipe 2211 is located in the air intake channel 125 and is connected to the air intake channel 125. The purpose of connecting the air intake pipe 2211 with the air intake channel 125 here is that the air in the air filter element 123 is purified, and the impurity content in the air is low, which can avoid the secondary blockage of the filter screen 124 caused by the use of air with a high impurity content for ejection.

[0048] Furthermore, a third inner groove 113 is provided on both sides of the second inner groove 112 in the chassis 11, and the jet structure includes an inner hollow plate 223 located in the third inner groove 113, the bottom of the inner hollow plate 223 is connected to the extended arms at both ends of the control plate 222, the inner hollow plate 223 is located between the ventilation plate 211 and the filter screen 124, and a corresponding card slot is provided on the inner frame 121, and the side wall of the inner hollow plate 223 is connected to the inner frame 121 by the provided card slot to achieve an up and down sliding connection, one end of the bottom of the inner hollow plate 223 is connected to the exhaust pipe 2212, and an air outlet 2231 for airflow ejection is provided at one end of the top of the inner hollow plate 223 near the filter screen 124, such as Fig. 9As shown, the control board 222 moves upward in the second inner groove 112 to squeeze the elastic airbag 221 so that the elastic airbag 221 is compressed to discharge the previously inhaled gas through the exhaust pipe 2212, and the control board 222 simultaneously drives the inner end hollow plate 223 to move upward along the inner frame 121. During the upward movement of the inner end hollow plate 223, the gas enters the inner end hollow plate 223 through the exhaust pipe 2212 and then sprays toward the filter screen 124 from the air outlet 2231. Under the impact of the airflow, the obstruction attached to the filter hole of the filter screen 124 is pushed out of the filter hole of the filter screen 124, thereby avoiding the blockage of the filter screen 124. The air can flow smoothly, thereby ensuring the air purification efficiency of the air filter element 123. Considering that when the distance between the air outlet 2231 and the filter 124 is too large, the jet airflow divergence phenomenon will appear, that is, the gas inflow into the filter hole of the filter 124 is less than the gas outflow of the air outlet 2231, resulting in a greatly reduced airflow impact effect. Therefore, the surface of the inner end hollow plate 223 is fitted with the surface of the filter 124, and the shape of the air outlet 2231 matches the shape of the filter hole of the filter 124. Such a setting enables the airflow ejected from the air outlet 2231 to completely enter the filter hole, thereby ensuring the airflow impact effect.

[0049] After the ejected airflow blows the obstruction out of the filter 124, in order to properly handle the obstruction, the jet structure also includes an outer hollow plate 224 located on the side of the filter 124 away from the inner hollow plate 223, the bottom of the outer hollow plate 224 is connected to the extended arms at both ends of the control plate 222, and a plate groove for receiving airflow and obstruction is provided on the top of the outer hollow plate 224 near the surface of one side of the inner hollow plate 223, the bottom of the outer hollow plate 224 is connected to the third inner groove 113, and the bottom of the third inner groove 113 is connected to the collecting device 3 When the air flow ejected from the air outlet 2231 drives the blockage to be separated from the filter screen 124, the air flow and the blockage carried by the air flow enter the outer hollow plate 224 through the plate groove, and then pass downward from the outer hollow plate 224 through the third inner groove 113 into the collecting device 3 to be collected, thereby preventing the air flow from being directly blown out from the outer grille plate 122, causing the air flow outside the outer grille plate 122 to be turbulent and affecting the flow of air to the air filter element 123, and can also prevent the blockage from being directly blown into the outside air, causing the problem of increased impurity content in the air.

[0050] After the air flow enters the collecting device 3, it is discharged from the collecting device 3. In order to prevent the blockages carried by the air flow from being discharged from the collecting device 3, Figure 8As shown, the collecting device 3 includes a bottom box 31 which is plugged into the bottom end of the chassis 11, and a accommodating chamber 32 for accommodating blockages is provided in the bottom box 31. The top of the accommodating chamber 32 is connected to the bottom of the third inner groove 113, and double-layer screens 33 for reducing the gas flow rate are provided at both ends of the bottom of the accommodating chamber 32. When the gas flows through the screen 33, the blockages are intercepted and retained in the accommodating chamber 32, and the gas can be discharged smoothly after being decelerated by the double-layer screen 33, so that a smooth airflow is discharged from the bottom end of the air purification device, and the air is sucked in from the top end of the air purification device for purification, thereby forming a benign circulation flow of air to ensure the air purification effect.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A portable air purification device, characterized in that: It comprises a filtering device (1), a dredging device (2) and a collecting device (3) arranged in the filtering device (1), wherein the collecting device (3) is used to collect impurities; The filtering device (1) comprises a movable case (11) and a filtering body (12) arranged at the top end of the case (11), wherein the filtering body (12) is used for purifying air; The dredging device (2) comprises a ventilating body (21) and an air blowing body (22) located at both ends of the filter body (12); the ventilating body (21) is used to accelerate air passing through the filter body (12); the air blowing body (22) is connected to the filter body (12) in an up-and-down sliding manner; the ventilating body (21) is connected to the air blowing body (22) in a transmission manner; the ventilating body (21) drives the air blowing body (22) to move up and down along the filter body (12); when the air blowing body (22) moves downward, the air is collected; when the air blowing body (22) moves upward, the air is sprayed toward the filter body (12) to drive the blockage to separate from the filter body (12) and fall into the collecting device (3) to be collected.

2. The portable air purification device according to claim 1, characterized in that: The filter body (12) comprises an inner frame (121) located in the chassis (11); both ends of the inner frame (121) are fixedly connected to outer grille plates (122) by bolts; the outer grille plates (122) are snap-fitted with the outer wall of the top end of the chassis (11); an air filter element (123) for sterilization and deodorization is arranged in the inner frame (121); and filter screens (124) for filtering out air impurities are arranged on both sides of the air filter element (123) in the inner frame (121).

3. The movable air purification device according to claim 2, characterized in that: The air filter element (123) and the filter screen (124) are both planar plate structures.

4. The movable air purification device according to claim 3, characterized in that: The ventilation body (21) comprises a ventilation plate (211) and a transmission shaft (212) rotatably connected to the ventilation plate (211); the ventilation plate (211) is located between the air filter element (123) and the filter screen (124); a fan blade (2111) is arranged inside the ventilation plate (211); the fan blade (2111) is engaged with the top end of the transmission shaft (212); a motor is engaged with the bottom end of the transmission shaft (212); and a first inner groove (111) for accommodating the motor is provided in the middle of the chassis (11).

5. The movable air purification device according to claim 4, characterized in that: A second inner groove (112) is provided in the chassis (11) at the top of the first inner groove (111); the air blowing body (22) comprises an elastic airbag (221) located in the second inner groove (112) and a control board (222) connected to the bottom of the elastic airbag (221); the elastic airbag (221) is connected to an air inlet pipe (2211) and an air outlet pipe (2212); the air inlet pipe (2211) is used to control the unidirectional flow of gas into the elastic airbag (221); the air outlet pipe (2212) is used to control the unidirectional flow of gas out of the elastic airbag (221); the air outlet pipe (2212) is connected to an air jet structure for jetting air toward the filter (124); and the transmission shaft (212) is reciprocatingly threadedly connected to the control board (222).

6. The movable air purification device according to claim 5, characterized in that: An air intake channel (125) is provided at the bottom of the air filter element (123), and the air intake pipe (2211) is in communication with the air intake channel (125).

7. The movable air purification device according to claim 5, characterized in that: A third inner groove (113) is provided in the chassis (11) on both sides of the second inner groove (112); the jet structure comprises an inner hollow plate (223) located in the third inner groove (113); the bottom of the inner hollow plate (223) is connected to two ends of the control panel (222); the inner hollow plate (223) is located between the ventilation plate (211) and the filter screen (124); the side wall of the inner hollow plate (223) is connected to the inner frame (121) in an up-and-down sliding manner; the bottom of the inner hollow plate (223) is connected to the exhaust pipe (2212); and an air outlet (2231) for jetting air is provided at the top of the inner hollow plate (223) near the filter screen (124).

8. The movable air purification device according to claim 7, characterized in that: The surface of the inner hollow plate (223) is in contact with the surface of the filter screen (124), and the shape of the air outlet (2231) matches the shape of the filter hole of the filter screen (124).

9. The movable air purification device according to claim 7, characterized in that: The jet structure also includes an outer hollow plate (224) located on a side of the filter screen (124) away from the inner hollow plate (223); the bottom of the outer hollow plate (224) is connected to two ends of the control plate (222); a plate groove for receiving blockages is provided on the top of the outer hollow plate (224) close to the surface of the inner hollow plate (223); the bottom of the outer hollow plate (224) is connected to the third inner groove (113); and the bottom of the third inner groove (113) is connected to the collecting device (3).

10. The movable air purification device according to claim 9, characterized in that: The collecting device (3) comprises a bottom box (31) plugged into the bottom end of the chassis (11), a receiving chamber (32) for receiving the blockage is provided in the bottom box (31), the top of the receiving chamber (32) is connected to the bottom of the third inner groove (113), and double-layer screens (33) for reducing the gas flow rate are provided at both ends of the bottom of the receiving chamber (32).

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