Environmentally friendly air purification box

Abstract

The present invention relates to the technical field of air purification, and specifically discloses an environmentally friendly air purification box, including a box body, wherein the two ends of the box body are respectively provided with an air inlet and an air outlet, and the interior of the box body is sequentially installed with a first filter element, a second filter element, and an axial flow fan from the air inlet to the air outlet, and further includes a first telescopic member for driving the first filter element to slide; a second telescopic member for driving the second filter element to slide; wherein the first telescopic member and the second telescopic member can drive the first filter element and the second filter element to slide synchronously or differentially. The two sides of the second filter element are blocked by a sealing member, and when cleaning, the second filter element is driven to slide by the second telescopic member, so that the second filter element is close to the first filter element, so that the air between the second filter element and the first filter element is discharged from the pores on the first filter element, thereby taking out the dust in the pores of the first filter element, and achieving a self-cleaning effect.

Description

Technical Field

[0001] The invention relates to the technical field of air purification, in particular to an environmentally friendly air purification box. Background Art

[0002] An air purifier, also known as an air filter box, is a ventilation device that centralizes air treatment; a multi-stage air filter is installed inside the air purifier, which can effectively remove pollutants in the air, such as dust, bacteria, viruses, pollen, harmful gases, etc. Its working principle mainly relies on the following three methods:

[0003] Mesh filtration: intercepts large particles in the air, such as dust, pet hair, etc. through the mesh.

[0004] Activated carbon adsorption: Utilize the porous characteristics of activated carbon to adsorb harmful gases in the air, such as formaldehyde, TVOC (volatile organic compounds), etc.

[0005] High-voltage electrostatic field: Use the power of the electrostatic field to absorb tiny particles in the air, such as viruses, bacteria, pollen, etc.

[0006] Purifiers that filter through a screen need to regularly clean the screen or filter element inside to prevent dust from clogging the pores of the filter element and causing pollution. The self-cleaning method of the prior art is mainly to suck out the dust in the filter element through an external negative pressure pump, or to remove the dust by scraping the surface of the filter element through a cleaning component. The problem is that since the filter element itself has pores, the negative pressure generated by negative pressure adsorption cannot fully suck out the dust in the pores of the filter element, and when cleaning by scraping, the cleaning component may cause wear to the filter element, and the scraping method cannot bring out the dust deep in the filter element, so the cleaning effect is also limited. Summary of the invention

[0007] One of the purposes of the present invention is to provide an environmentally friendly air purification box. By arranging a movable first filter element and a second filter element, when performing self-cleaning, the second filter element can be pushed toward the first filter element, so that the air between the first filter element and the second filter element is squeezed out from the gap of the first filter element, thereby cleaning the dust inside the first filter element.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: an environmentally friendly air purification box, comprising a box body, an air inlet and an air outlet are respectively opened at both ends of the box body, a first filter element, a second filter element and an axial flow fan are sequentially installed inside the box body from the air inlet to the air outlet, and further comprising:

[0009] A first telescopic member, used to drive the first filter element to slide;

[0010] A second telescopic member, used for driving the second filter element to slide;

[0011] Wherein, the first telescopic member and the second telescopic member can drive the first filter element and the second filter element to slide synchronously or differentially;

[0012] A sealing member, movably covering both ends of the first filter element and the second filter element through a driving assembly;

[0013] Wherein, when in the air purification state, the seals of the first filter element and the second filter element are both in an open state, allowing air to pass through the first filter element and the second filter element;

[0014] When in the self-cleaning state, the seals on both sides of the first filter element are in an open state, and the seals on both sides of the second filter element are in a closed state. At this time, the second filter element is driven by the second telescopic member to slide toward the first filter element, and air pressure is applied to the first filter element. The high-pressure gas passes through the gap in the first filter element, so that the dust accumulated in the first filter element is discharged.

[0015] Preferably, an air inlet filter plate is installed in the air inlet, an air outlet filter plate is installed in the air outlet, and the peripheries of the first filter element and the second filter element are in contact with the inner wall of the box body.

[0016] Preferably, it also includes:

[0017] A sliding column connected to one end of the first filter element, one end of the first telescopic member is connected to one end of the sliding column, and the other end is connected to the inner wall of the box;

[0018] A sliding sleeve is connected to one end of the second filter element. A through hole is provided in the middle of the second filter element. The sliding column passes through the through hole and is slidably connected to the sliding sleeve. One end of the second telescopic member is connected to one end of the sliding sleeve, and the other end is connected to the inner wall of the box.

[0019] Preferably, it also includes:

[0020] An electrostatic generator is fixedly installed inside the box and connected to the sealing member via a wire;

[0021] The electrostatic generator is used to generate static electricity on the sealing member, so that the sealing member can absorb dust.

[0022] Preferably, the sealing element comprises:

[0023] There are two first cover plates, which are symmetrically installed on one side of the first filter element, and the two first cover plates cover one side of the first filter element;

[0024] There are two second cover plates, which are symmetrically installed on the other side of the first filter element. The two second cover plates cover the other side of the first filter element.

[0025] Preferably, the sealing member further comprises:

[0026] There are two third cover plates, which are symmetrically installed on one side of the second filter element, and the two third cover plates cover one side of the second filter element;

[0027] There are two fourth cover plates, which are symmetrically installed on the other side of the second filter element. The two fourth cover plates cover the other side of the second filter element.

[0028] Preferably, electric heating wires are installed in the middle of the first cover plate, the second cover plate, the third cover plate and the fourth cover plate, and the electric heating wires heat the first cover plate, the second cover plate, the third cover plate and the fourth cover plate so that they can heat the air in the box.

[0029] Preferably, the driving assembly comprises:

[0030] A first hinge seat, one end of the two first cover plates and one end of the two second cover plates are respectively hinged to the first hinge seat;

[0031] A first gear connected to the hinge shaft between the first cover plate and the first hinge seat;

[0032] A second gear connected to the hinge shaft between the second cover plate and the first hinge seat;

[0033] A second hinged seat, one end of the two third cover plates and one end of the two fourth cover plates are respectively hinged to the second hinged seat;

[0034] A third gear connected to the hinge shaft between the third cover plate and the second hinge seat;

[0035] The fourth gear is connected to the hinge shaft between the fourth cover plate and the second hinge seat.

[0036] Preferably, the driving assembly further comprises:

[0037] a first reversing gear meshing with the first gear;

[0038] A first rack connected to the inner wall of the box body and meshing with the first reversing gear;

[0039] A second rack connected to the inner wall of the box body and meshing with the second gear;

[0040] A second reversing gear meshing with the third gear;

[0041] A third rack connected to the inner wall of the box body and meshing with the second reversing gear;

[0042] A fourth rack is connected to the inner wall of the box body and meshes with the fourth gear.

[0043] Preferably, the first rack is arranged at an end of the first reversing gear close to the air inlet, the third rack is arranged at an end of the second reversing gear close to the air outlet, and avoidance grooves are provided at both ends of the second filter element, and the avoidance grooves can accommodate the third rack.

[0044] Through the above technical solution, the present invention has at least the following beneficial effects:

[0045] 1. Block both sides of the second filter element with a seal. When cleaning, drive the second filter element to slide through the second telescopic member to bring the second filter element close to the first filter element, so that the air between the second filter element and the first filter element is discharged from the pores on the first filter element, thereby taking out the dust in the pores of the first filter element to achieve a self-cleaning effect. Compared with the negative pressure adsorption method, this method blocks both sides of the second filter element with a seal, so that the air can only be discharged from the pores of the first filter element, and the generated air pressure is large enough, so the dust can be fully discharged.

[0046] 2. The second filter element is driven to move back and forth by the second telescopic member, and when it moves toward the air outlet, the external air is sucked into between the first filter element and the second filter element. During the inhalation process, the dust inside the first filter element is brought back into between the first filter element and the second filter element, thereby further cleaning the first filter element and further ensuring the cleaning effect of the first filter element.

[0047] 3. By setting up an electrostatic generator, the seal can generate an electric charge, so that it can adsorb dust with opposite charge. After the adsorption is completed, the electrostatic generator can generate the same charge as the dust, so that the dust and the seal are repelled and separated.

[0048] 4. By arranging an electric heating wire in the sealing member, the interior of the box can be heated both when in use and when not in use, so that the first filter element and the second filter element inside the box are in a dry state, thereby preventing the first filter element and the second filter element from getting moldy and extending their service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is an overall stereogram of the present invention;

[0050] Figure 2 It is a schematic diagram of the internal structure of the box body of the present invention;

[0051] Figure 3 It is a cross-sectional view of the present invention;

[0052] Figure 4 A three-dimensional diagram of the seal of the present invention in an open state;

[0053] Figure 5 A three-dimensional diagram of the sealing member on the second filter element of the present invention in a closed state;

[0054] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0055] Figure 7 For the present invention Figure 5 Enlarged view of point B in the middle;

[0056] Figure 8 It is a three-dimensional diagram of the first filter element, the second filter element and the sealing element of the present invention;

[0057] Fig. 9 is a state change diagram of the second filter element of the present invention;

[0058] Fig.10 It is an enlarged view of the state change diagram of the second filter element of the present invention.

[0059] In the figure:

[0060] 1. Box body; 11. Axial flow fan; 12. Inlet filter plate; 13. Outlet filter plate;

[0061] 2. first filter element; 21. sliding column; 22. first telescopic member;

[0062] 201, first cover plate; 202, second cover plate; 203, first hinge seat; 204, first gear; 205, second gear; 206, first reversing gear; 207, first rack; 208, second rack;

[0063] The second filter element; 31, the sliding sleeve; 32, the second telescopic member; 301, the third cover plate; 302, the fourth cover plate; 303, the second hinged seat; 304, the third gear; 305, the fourth gear; 306, the second reversing gear; 307, the third rack; 308, the fourth rack; 309, the avoidance groove. DETAILED DESCRIPTION

[0064] The following will disclose multiple embodiments of the present invention with the accompanying drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not necessary. And if it is possible to implement, the features of different embodiments can be applied interchangeably.

[0065] Unless otherwise defined, all words (including technical and scientific terms) used herein have their usual meanings, and their meanings can be understood by those familiar with this field. Furthermore, the definitions of the above words in commonly used dictionaries should be interpreted in the content of this specification as consistent with the meanings of the relevant fields of the present invention. Unless otherwise clearly defined, these words will not be interpreted as idealized or overly formal meanings.

[0066] See also Figure 1-Figure 10 The present invention provides an environmentally friendly air purification box, comprising a box body 1, wherein both ends of the box body 1 are respectively provided with an air inlet and an air outlet;

[0067] In order to allow the self-cleaning dust to be discharged, a movable cleaning door (not shown in the figure) is opened at the bottom of the box body 1. In normal use, the cleaning door is closed. After the self-cleaning is completed, the cleaning door can be opened to allow the dust inside the box body 1 to be removed;

[0068] The first filter element 2, the second filter element 3 and the axial flow fan 11 are sequentially installed inside the box body 1 from the air inlet to the air outlet. The four corners of the first filter element 2 and the second filter element 3 are provided with limiting holes, and the inner wall of the box body 1 is connected with limiting columns. The limiting holes are slidably connected with the limiting columns, so that the first filter element 2 and the second filter element 3 can slide along the central axis direction of the box body 1;

[0069] like Figure 3 As shown, it also includes:

[0070] A first telescopic member 22, used to drive the first filter element 2 to slide;

[0071] A second telescopic member 32, used to drive the second filter element 3 to slide;

[0072] The first telescopic member 22 and the second telescopic member 32 can drive the first filter element 2 and the second filter element 3 to slide synchronously or differentially;

[0073] A sealing member, which is movably covered at both ends of the first filter element 2 and the second filter element 3 through a driving component;

[0074] Wherein, when in the air purification state, the seals of the first filter element 2 and the second filter element 3 are both in an open state, allowing air to pass through the first filter element 2 and the second filter element 3;

[0075] When in the self-cleaning state, the seals on both sides of the first filter element 2 are in an open state, and the seals on both sides of the second filter element 3 are in a closed state. At this time, the second filter element 3 is driven by the second telescopic member 32 to slide toward the first filter element 2, and air pressure is applied to the first filter element 2. The high-pressure gas passes through the gap in the first filter element 2, so that the dust accumulated in the first filter element 2 is discharged;

[0076] The two sides of the second filter element 3 are blocked by the sealing member. When cleaning, the second filter element 3 is driven to slide by the second telescopic member 32, so that the second filter element 3 is close to the first filter element 2, so that the air between the second filter element 3 and the first filter element 2 is discharged from the pores on the first filter element 2, thereby taking out the dust in the pores of the first filter element 2, achieving a self-cleaning effect. Compared with the negative pressure adsorption method, this method blocks the two sides of the second filter element 3 by the sealing member, so that the air can only be discharged from the pores of the first filter element 2, and the generated air pressure is large enough, so that the dust can be fully discharged;

[0077] Furthermore, the second telescopic member 32 can also drive the second filter element 3 to move back and forth. When it moves toward the air outlet, the external air is sucked into between the first filter element 2 and the second filter element 3. During the suction process, the dust inside the first filter element 2 is brought into between the first filter element 2 and the second filter element 3 again, thereby further cleaning the first filter element 2 and further ensuring the cleaning effect of the first filter element 2.

[0078] And when the purification box is not in use, the first filter element 2 and the second filter element 3 are blocked on both sides by the seal, so that external floating dust cannot enter the interior of the first filter element 2 or the second filter element 3, thereby extending the service life of the first filter element 2 and the second filter element 3.

[0079] like Figure 2 As shown, as a possible embodiment, an air inlet filter plate 12 is installed in the air inlet, and an air outlet filter plate 13 is installed in the air outlet. The first filter element 2 and the second filter element 3 are in contact with the inner wall of the box body 1 around them. The air inlet filter plate 12 and the air outlet filter plate 13 can preliminarily prevent large particles of dust from entering the box body 1.

[0080] like Figure 3 As shown, as a possible embodiment, it also includes:

[0081] A sliding post 21 is connected to one end of the first filter element 2, one end of the first telescopic member 22 is connected to one end of the sliding post 21, and the other end is connected to the inner wall of the box body 1;

[0082] The sliding sleeve 31 is connected to one end of the second filter element 3. The second filter element 3 has a through hole in the middle. The sliding column 21 passes through the through hole and is slidably connected to the sliding sleeve 31. One end of the second telescopic member 32 is connected to one end of the sliding sleeve 31, and the other end is connected to the inner wall of the box body 1.

[0083] The sliding column 21 and the sliding sleeve 31 are connected to the middle of the first filter element 2 and the second filter element 3 respectively, so that the output ends of the first telescopic member 22 and the second telescopic member 32 are roughly located in the middle of the first filter element 2 and the second filter element 3, so that when the two are driven to move, the force is concentrated to prevent the first filter element 2 or the second filter element 3 from tilting during the movement.

[0084] like Figure 3 As shown, as a possible embodiment, it also includes:

[0085] The electrostatic generator 4 is fixedly installed inside the box 1 and connected to the sealing member through a wire;

[0086] The electrostatic generator 4 is used to generate static electricity on the sealing member, so that the sealing member can absorb dust.

[0087] By setting up the electrostatic generator 4, the seal generates an electric charge, so that the dust with the opposite charge can be adsorbed, and after the adsorption is completed, the electrostatic generator 4 can generate the same charge as the dust, so that the dust and the seal are repelled and separated.

[0088] like Figure 4 , Figure 5 As shown, as a possible embodiment, the sealing member includes:

[0089] There are two first cover plates 201, which are symmetrically installed on one side of the first filter element 2, and the two first cover plates 201 cover one side of the first filter element 2;

[0090] There are two second cover plates 202 , which are symmetrically installed on the other side of the first filter element 2 . The two second cover plates 202 cover the other side of the first filter element 2 .

[0091] like Figure 4 , Figure 5 As shown, as a possible embodiment, the sealing member further includes:

[0092] There are two third cover plates 301, which are symmetrically installed on one side of the second filter element 3, and the two third cover plates 301 cover one side of the second filter element 3;

[0093] There are two fourth cover plates 302 , which are symmetrically installed on the other side of the second filter element 3 . The two fourth cover plates 302 cover the other side of the second filter element 3 .

[0094] As a possible embodiment, electric heating wires (not shown in the figure) are installed in the middle of the first cover plate 201, the second cover plate 202, the third cover plate 301 and the fourth cover plate 302, and the electric heating wires heat the first cover plate 201, the second cover plate 202, the third cover plate 301 and the fourth cover plate 302, so that they can heat the air in the box body 1;

[0095] The heat from the heating wire can keep the interior of the box 1 in a high temperature state, so that when the purification work is performed, the heat can evaporate the moisture in the dust and reduce the stickiness of the dust. When the purification box is not working, the heating wire can also be in a heated state. The heat can heat the first filter element 2 and the second filter element 3, so that the first filter element 2 and the second filter element 3 are in a dry state to prevent them from getting moldy.

[0096] like Figure 6 , Figure 7 As shown, as a possible embodiment, the driving component includes:

[0097] A first hinge seat 203, one end of the two first cover plates 201 and one end of the two second cover plates 202 are respectively hinged to the first hinge seat 203;

[0098] A first gear 204 is connected to the hinge shaft between the first cover plate 201 and the first hinge seat 203;

[0099] A second gear 205 is connected to the hinge shaft between the second cover plate 202 and the first hinge seat 203;

[0100] A second hinge seat 303, one end of the two third cover plates 301 and one end of the two fourth cover plates 302 are respectively hinged to the second hinge seat 303;

[0101] A third gear 304 is connected to the hinge shaft between the third cover plate 301 and the second hinge seat 303;

[0102] The fourth gear 305 is connected to the hinge shaft between the fourth cover plate 302 and the second hinge seat 303 .

[0103] like Figure 6 , Figure 7 As shown, as a possible embodiment, the driving component further includes:

[0104] A first reversing gear 206 meshing with the first gear 204;

[0105] A first rack 207, connected to the inner wall of the box body 1, meshing with the first reversing gear 206;

[0106] A second rack 208, connected to the inner wall of the box body 1, meshing with the second gear 205;

[0107] A second reversing gear 306 meshing with the third gear 304;

[0108] A third rack 307, connected to the inner wall of the box body 1, meshing with the second reversing gear 306;

[0109] The fourth rack 308 is connected to the inner wall of the box body 1 and meshes with the fourth gear 305 .

[0110] like Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 As shown, as a possible embodiment, the first rack 207 is arranged at one end of the first reversing gear 206 close to the air inlet, the third rack 307 is arranged at one end of the second reversing gear 306 close to the air outlet, and avoidance grooves 309 are provided at both ends of the second filter element 3, and the avoidance grooves 309 can accommodate the third rack 307;

[0111] Through the above scheme:

[0112] When in the purification state, such as Figure 4 As shown, the first cover plate 201, the second cover plate 202, the third cover plate 301 and the fourth cover plate 302 are all in an open state. At this time, the external air can pass through the first filter element 2 and the second filter element 3 normally, forming an air filtering state. In this state, the heating wire and the electrostatic generator 4 can work normally, respectively performing heating and electrostatic adsorption work.

[0113] When in self-cleaning state, Figure 5 , Figure 7 As shown, the first cover plate 201 and the second cover plate 202 are in an open state, and the third cover plate 301 and the fourth cover plate 302 are in a closed state. At this time, the second filter element 3 can be driven to reciprocate by the second telescopic member 32. During the reciprocating movement, the third rack 307 and the fourth rack 308 are separated from the second reversing gear 306 and the fourth gear 305 respectively;

[0114] like Figure 4As shown, the formation of the third rack 307 and the fourth rack 308 can be adjusted as needed, so that when the second telescopic member 32 drives the second filter element 3 to move toward the air inlet, the fourth cover plate 302 can be first in a closed state, and then the third cover plate 301 is closed. The advantage brought by this is that when the fourth cover plate 302 is in the process of fast closing, the fourth cover plate 302 can be allowed to beat one end of the second filter element 3, so that the dust in the pores of the second filter element 3 can be discharged from the left and right of the second filter element 3, and then the second telescopic member 32 continues to drive the second filter element 3 to move, so that the third rack 307 and the fourth rack 308 are separated from the second reversing gear 306 and the fourth gear 305;

[0115] like Figure 5 As shown, when the third rack 307 and the fourth rack 308 are in a separated state from the second reversing gear 306 and the fourth gear 305, the second telescopic member 32 can also drive the second filter element 3 to continue moving in the direction of the air inlet. At this time, since the third cover plate 301 and the fourth cover plate 302 are in a closed state, the second filter element 3 is equivalent to a closed plate. Therefore, when the second filter element 3 moves in the direction of the first filter element 2, the air between the second filter element 3 and the first filter element 2 can be discharged from the pores on the first filter element 2, thereby bringing out the dust in the pores of the first filter element 2, achieving a self-cleaning effect. When the second telescopic member 32 drives the second filter element 3 to move in the direction of the air outlet, external air is sucked in between the first filter element 2 and the second filter element 3. During the inhalation process, the dust inside the first filter element 2 is brought in between the first filter element 2 and the second filter element 3 again, thereby further cleaning the first filter element 2, further ensuring the cleaning effect of the first filter element 2.

[0116] It should be noted that the first cover plate 201, the second cover plate 202, the third cover plate 301 and the fourth cover plate 302 are all hinged to the first hinge seat 203 and the second hinge seat 303 through a torsion spring, and the torsion springs on the second cover plate 202, the third cover plate 301 and the fourth cover plate 302 make them in a closed state by default, and the torsion spring on the first cover plate 201 makes it in an open state by default, and the spacing between the first filter element 2 and the second filter element and the formation of the first telescopic member 22 and the second telescopic member 32 can be adjusted according to actual needs;

[0117] The automatic opening and closing of the first cover plate 201, the second cover plate 202, the third cover plate 301 and the fourth cover plate 302 are realized by the following steps:

[0118] like Figure 6The steps of automatically opening and closing the first cover plate 201 and the second cover plate 202 shown are as follows: the first telescopic member 22 drives the first filter element 2 to move toward the air inlet, and the second gear 205 meshes with the second rack 208, so that the second gear 205 and the second cover plate 202 rotate to close the second cover plate 202; at the same time, the first reversing gear 206 meshes with the first rack 207 to rotate the first reversing gear 206, and then the first reversing gear 206 drives the first gear 204 to rotate, so that the first cover plate 201 rotates synchronously to close the first cover plate 201, when the first reversing gear 206 is separated from the first rack 207, under the action of the torsion spring, the first cover plate 201 is opened, and when the first filter element 2 moves toward the air outlet, the second gear 205 meshes with the second rack 208, so that the second gear 205 and the second cover plate 202 rotate to open the second cover plate 202;

[0119] like Figure 7 The steps for automatically opening and closing the third cover 301 and the fourth cover 302 shown are as follows: when the third rack 307 and the fourth rack 308 are separated from the second reversing gear 306 and the fourth gear 305 respectively, the third cover 301 and the fourth cover 302 are in a closed state; when the second telescopic member 32 drives the second filter element 3 to move toward the air outlet, the fourth gear 305 meshes with the fourth rack 308 and rotates to open the fourth cover 302; the second reversing gear 306 meshes with the third rack 307 to rotate the second reversing gear 306 and simultaneously drives the third gear 304 to rotate to open the third cover 301.

Claims

1. An environmentally friendly air purification box, characterized in that: A box body (1), wherein an air inlet and an air outlet are respectively provided at two ends of the box body (1), and a first filter element (2), a second filter element (3) and an axial flow fan (11) are installed in sequence inside the box body (1) from the air inlet to the air outlet, characterized in that it also includes: A first telescopic member (22) used to drive the first filter element (2) to slide; A second telescopic member (32) is used to drive the second filter element (3) to slide; Wherein, the first telescopic member (22) and the second telescopic member (32) are capable of driving the first filter element (2) and the second filter element (3) to slide synchronously or differentially; A sealing member, which is movably covered on both ends of the first filter element (2) and the second filter element (3) through a driving component; Wherein, when in the air purification state, the seals of the first filter element (2) and the second filter element (3) are both in an open state, allowing air to pass through the first filter element (2) and the second filter element (3); When in the self-cleaning state, the seals on both sides of the first filter element (2) are in an open state, and the seals on both sides of the second filter element (3) are in a closed state. At this time, the second filter element (3) is driven by the second telescopic member (32) to slide in the direction of the first filter element (2), and air pressure is applied to the first filter element (2). The high-pressure gas passes through the gap in the first filter element (2), so that the dust accumulated in the first filter element (2) is discharged; It also includes a sliding column (21) connected to one end of the first filter element (2); one end of the first telescopic member (22) is connected to one end of the sliding column (21), and the other end is connected to the inner wall of the box body (1); A sliding sleeve (31) is connected to one end of the second filter element (3); a through hole is provided in the middle of the second filter element (3); the sliding column (21) passes through the through hole and is slidably connected to the sliding sleeve (31); one end of the second telescopic member (32) is connected to one end of the sliding sleeve (31), and the other end is connected to the inner wall of the box body (1); The sealing element comprises: There are two first cover plates (201), which are symmetrically mounted on one side of the first filter element (2), and the two first cover plates (201) cover one side of the first filter element (2); There are two second cover plates (202), which are symmetrically mounted on the other side of the first filter element (2), and the two second cover plates (202) cover the other side of the first filter element (2); The seal also includes: There are two third cover plates (301), which are symmetrically mounted on one side of the second filter element (3), and the two third cover plates (301) cover one side of the second filter element (3); There are two fourth cover plates (302) which are symmetrically mounted on the other side of the second filter element (3), and the two fourth cover plates (302) cover the other side of the second filter element (3).

2. The environmentally friendly air purification box according to claim 1, characterized in that: An air inlet filter plate (12) is installed in the air inlet, an air outlet filter plate (13) is installed in the air outlet, and the peripheries of the first filter element (2) and the second filter element (3) are in contact with the inner wall of the box body (1).

3. The environmentally friendly air purification box according to claim 1, characterized in that: It also includes an electrostatic generator (4), which is fixedly installed inside the box (1) and connected to the sealing element via a wire; The electrostatic generator (4) is used to generate static electricity on the sealing component, so that the sealing component can absorb dust.

4. The environmentally friendly air purification box according to claim 1, characterized in that: Electric heating wires are installed in the middle of the first cover plate (201), the second cover plate (202), the third cover plate (301) and the fourth cover plate (302), and the electric heating wires heat the first cover plate (201), the second cover plate (202), the third cover plate (301) and the fourth cover plate (302), so that they can heat the air in the box body (1).

5. The environmentally friendly air purification box according to claim 1, characterized in that: The drive assembly comprises: A first hinge seat (203), one end of the two first cover plates (201) and one end of the two second cover plates (202) being hinged to the first hinge seat (203) respectively; A first gear (204) connected to a hinge shaft between the first cover plate (201) and the first hinge seat (203); A second gear (205) connected to the hinge shaft between the second cover plate (202) and the first hinge seat (203); A second hinged seat (303), one end of the two third cover plates (301) and one end of the two fourth cover plates (302) being hinged to the second hinged seat (303) respectively; A third gear (304) connected to the hinge shaft between the third cover plate (301) and the second hinge seat (303); The fourth gear (305) is connected to the hinge shaft between the fourth cover plate (302) and the second hinge seat (303).

6. The environmentally friendly air purification box according to claim 5, characterized in that: The drive assembly also includes: A first reversing gear (206) meshing with the first gear (204); A first rack (207) connected to the inner wall of the box body (1) and meshing with the first reversing gear (206); A second rack (208) connected to the inner wall of the box (1) and meshing with the second gear (205); A second reversing gear (306) meshing with the third gear (304); a third rack (307) connected to the inner wall of the housing (1) and meshing with the second reversing gear (306); The fourth rack (308) is connected to the inner wall of the box body (1) and meshes with the fourth gear (305).

7. The environmentally friendly air purification box according to claim 6, characterized in that: The first rack (207) is arranged at one end of the first reversing gear (206) close to the air inlet, the third rack (307) is arranged at one end of the second reversing gear (306) close to the air outlet, and avoidance grooves (309) are provided at both ends of the second filter element (3), and the avoidance grooves (309) are capable of accommodating the third rack (307).

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