An air purifier convenient for dust removal

Abstract

The present invention discloses an air purifier which is easy to clean, comprising an air purifier shell, a filter assembly, a negative pressure assembly and a scraping mechanism. An air outlet is provided on the top of the air purifier shell, a plurality of air inlet holes are provided on the side of the lower end of the air purifier shell, the filter assembly is used for filtering the air entering into the air purifier shell, the filter assembly is detachably installed in the interior of the air purifier shell through a disassembly and assembly mechanism, the negative pressure assembly is arranged in the interior of the air purifier shell, and the scraping mechanism is used for scraping off the dust accumulated on the surface of the filter assembly, thereby extending the service life of the filter assembly. The present invention effectively avoids the clogging of the mesh of the filter cartridge with a smooth surface through double-layer filtration in combination with the scraping mechanism, thereby effectively reducing the replacement frequency of the pleated filter cartridge and extending the service life of the pleated filter cartridge.

Description

Technical Field

[0001] The present invention relates to the technical field of air purifiers, and in particular to an air purifier which is easy to clean. Background Art

[0002] A Chinese patent with announcement number CN206934940U discloses an air purifier, which is vertically arranged. Air inlets are provided on the left, right and rear of the lower part. Each air inlet is as large as possible, and the wall surface of the air purifier where the air inlets are provided is grid-shaped. A cylindrical filter is provided at the lower part of the air purifier. The filter is also vertically arranged. The air entering the air purifier from the air inlet passes through the wall surface of the filter into the interior of the filter, and then moves upward and is discharged through the air outlet at the top of the air purifier under the action of an impeller. The top of the cylindrical filter is sealed with the air purifier body, and the bottom is also sealed with the base of the air purifier, thereby ensuring that the outside air can only enter the interior of the filter and be discharged from the air outlet after passing through the wall surface of the filter.

[0003] The above-mentioned air purifier solves some defects existing in the prior art, but in actual use, there is no structure inside it to clean the dust accumulated on the surface of the filter, so once the filter holes are clogged, the filter needs to be taken out and cleaned. Therefore, it is very necessary to design an air purifier that can clean the dust accumulated on the surface of the filter and thereby reduce the frequency of filter cleaning.

[0004] For this reason, we propose an air purifier which is easy to clean. Summary of the invention

[0005] An object of the present invention is to provide an air purifier that is easy to clean, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0006] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0007] An air purifier that is easy to clean includes an air purifier housing, an air outlet is provided on the top of the air purifier housing, and a plurality of air inlet holes are provided on the side surface of the lower end of the air purifier housing;

[0008] A filter assembly, the filter assembly is used to filter the air entering the air purifier housing, and the filter assembly is detachably mounted inside the air purifier housing through a disassembly and assembly mechanism;

[0009] A negative pressure component, the negative pressure component is arranged inside the air purifier housing, and the negative pressure component is used to pump the inside of the air purifier housing into a negative pressure state, thereby sucking external air into the air purifier housing, and then exhausting it from the air outlet after being filtered by the filter component;

[0010] A scraping mechanism is used to scrape off dust accumulated on the surface of the filter assembly to extend the service life of the filter assembly.

[0011] In an air purifier for easy dust cleaning according to the present invention, the air purifier housing comprises an upper housing and a lower housing, the air inlet is opened on the side of the lower housing, the air outlet is opened on the top of the upper housing, and the lower housing is fixedly mounted on the bottom of the upper housing by bolts;

[0012] The negative pressure assembly includes a centrifugal fan and an air collecting hood, the top and bottom of the air collecting hood are both opened, the air collecting hood is fixedly installed inside the upper shell, the centrifugal fan is fixedly installed inside the air collecting hood through a support frame, and the lower end of the air collecting hood extends into the interior of the lower shell and is connected to the interior of the lower shell;

[0013] The filter assembly comprises a smooth-surface filter cartridge and a pleated filter cartridge, wherein the pleated filter cartridge is sleeved inside the smooth-surface filter cartridge, and the lower end of the air collecting hood is connected to the inside of the pleated filter cartridge;

[0014] The disassembly and assembly mechanism comprises a knob cover, the bottom of the lower shell body is fixedly installed with a bottom cover by screws, the bottom of the bottom cover is provided with an assembly hole for inserting the smooth-surface filter cartridge and the pleated filter cartridge into the interior of the lower shell body, the top of the knob cover is provided with a lower pressure seat, the lower end outer wall of the air collecting hood is fixedly installed with an upper pressure seat by screws, and the knob cover is detachably installed in the assembly hole by a disassembly and assembly part, the smooth-surface filter cartridge and the pleated filter cartridge are squeezed and limited between the lower pressure seat and the upper pressure seat, the inner top of the upper pressure seat is fixedly connected with a first limit block, and the top of the smooth-surface filter cartridge is fixedly connected with a second limit block, and the first limit block can limit the second limit block;

[0015] The disassembly and assembly part comprises an annular baffle formed and arranged inside the bottom cover, an inverted L-shaped limiting plate is formed and arranged on the outer wall of the upper end of the knob cover, a slot for inserting the inverted L-shaped limiting plate is provided on the inner wall of the annular baffle, after the inverted L-shaped limiting plate is inserted into the slot, the upper end of the inverted L-shaped limiting plate can be pressed on the top of the annular baffle after rotation, a limiting protrusion is formed and arranged on the inner wall of the annular baffle, a notch is provided on the upper end of the inverted L-shaped limiting plate, and the inverted L-shaped limiting plate is clamped with the limiting protrusion through the notch;

[0016] The scraping mechanism includes a gear ring and a motor. The gear ring is rotatably sleeved on the upper pressure seat. The motor is fixedly mounted on the inner top of the lower shell. A driving gear is fixedly mounted on the rotating shaft of the motor. The driving gear is meshed with the gear ring. A scraper is detachably mounted on the bottom of the gear ring through a locking mechanism. The bristles on the scraper are in contact with the surface of the smooth-surface filter cartridge.

[0017] In an air purifier that is easy to clean according to the present invention, the locking mechanism includes a mounting seat and an insertion block, the mounting seat is fixedly connected to the bottom of the gear ring, the insertion block is fixedly connected to the top of the scraper, a concave through groove is provided on the side of the mounting seat, the insertion block is convexly arranged, the insertion block is inserted into the concave through groove, an arc-shaped groove is provided on the side of the insertion block, an assembly groove connected to the concave through groove is provided inside the mounting seat, a columnar block and a spring are provided inside the assembly groove, one end of the spring abuts against one end of the assembly groove, and the other end of the spring abuts against the surface of the columnar block, the columnar block is slidably arranged inside the assembly groove, and a partial area of ​​the columnar block can extend into the arc-shaped groove.

[0018] In an air purifier that is easy to clean according to the present invention, the top and bottom of one end of the assembly groove close to the concave through groove are both provided with limiting parts that prevent the columnar block from escaping from the assembly groove.

[0019] In an air purifier that is easy to clean according to the present invention, a guide rod is fixedly connected to the cylindrical block, the spring is sleeved on the guide rod, a guide groove connected to the assembly groove is opened on the side of the mounting seat, and the end of the guide rod away from the cylindrical block is slidably inserted into the guide groove.

[0020] In an air purifier that is easy to clean according to the present invention, guide cutouts are provided on both sides of the top of the insert block.

[0021] In an air purifier that is easy to clean according to the present invention, the scraper is arranged in a spiral shape.

[0022] In an air purifier that is easy to clean according to the present invention, the scraper is an elastic rubber scraper.

[0023] In an air purifier that is easy to clean according to the present invention, a control panel is fixedly installed on the top of the upper shell, a control circuit board is fixedly installed on the bottom of the control panel, the control panel is electrically connected to the control circuit board, and the centrifugal fan and the motor are both controlled by the control circuit board.

[0024] In an air purifier that is easy to clean according to the present invention, an air outlet grille is fixedly installed on the top of the upper shell.

[0025] The present invention has at least the following beneficial effects:

[0026] The filter assembly provided by the present invention can perform secondary filtration on the air, filter and intercept finer impurities in the air, and then discharge the filtered air from the air outlet on the upper shell body. Through double-layer filtration, large particles of dust can be intercepted on the filter cartridge with smooth surface, thereby effectively extending the service life of the pleated filter cartridge. In combination with the scraping mechanism, the dust accumulated on the surface of the filter cartridge with smooth surface can be cleaned, effectively avoiding the clogging of the mesh of the filter cartridge with smooth surface, thereby effectively reducing the replacement frequency of the pleated filter cartridge and extending the service life of the pleated filter cartridge.

[0027] The smooth-surface filter cartridge and the pleated filter cartridge can be quickly disassembled and assembled by the disassembly and assembly mechanism, thereby facilitating the disassembly and cleaning of the smooth-surface filter cartridge and the pleated filter cartridge;

[0028] The provided locking mechanism facilitates the disassembly and assembly of the scraper, making it more convenient when the scraper needs to be cleaned or replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0030] Figure 1 It is a structural schematic diagram of the present invention;

[0031] Figure 2 It is a structural schematic diagram of another perspective of the present invention;

[0032] Figure 3 This is one of the structural schematic diagrams of the local explosion of the present invention;

[0033] Figure 4 This is the second structural schematic diagram of the partial explosion of the present invention;

[0034] Figure 5 It is one of the partial cross-sectional structural schematic diagrams of the present invention;

[0035] Figure 6 This is the second schematic diagram of the partial cross-sectional structure of the present invention;

[0036] Figure 7 The third schematic diagram of the partial cross-sectional structure of the present invention;

[0037] Figure 8It is a schematic diagram of the gear ring and the connection structure of the present invention;

[0038] Fig. 9 for Figure 4 A schematic diagram of the enlarged structure of part A;

[0039] Fig.10 for Figure 5 A schematic diagram of the enlarged structure of part B in FIG.

[0040] Fig.11 It is a schematic structural diagram of the scraper of the present invention;

[0041] Fig.12 It is a structural schematic diagram of the plug block of the present invention;

[0042] Fig.13 It is a structural schematic diagram of the mounting base of the present invention;

[0043] Fig.14 It is a schematic cross-sectional structure diagram of the mounting seat and the insert block of the present invention;

[0044] Fig.15 for Fig.14 Schematic diagram of the enlarged structure of part C;

[0045] Fig.16 for Fig.14 Schematic diagram of the enlarged structure of part D in FIG.

[0046] Description of Figure Numbers:

[0047] 1. Upper shell; 2. Lower shell; 3. Bottom cover; 301. Assembly hole; 302. Annular baffle; 303. Slot; 304. Limiting protrusion; 4. Knob cover; 401. Inverted L-shaped limiting plate; 402. Notch; 5. Lower pressure seat; 6. Smooth filter cartridge; 601. Second limiting block; 7. Pleated filter cartridge; 8. Centrifugal fan; 9. Air collecting hood; 10. Gear ring; 1001. Mounting seat; 10 011, concave through groove; 1002, assembly groove; 10021, limit part; 1003, guide groove; 1004, columnar clamping block; 1005, spring; 1006, guide rod; 11, scraper; 1101, plug-in block; 1102, arc-shaped clamping groove; 1103, guide incision; 12, motor; 13, driving gear; 14, control panel; 15, upper pressure seat; 1501, first limit block. DETAILED DESCRIPTION

[0048] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0049] Please refer to Figures 1 to 16As shown, an embodiment of the present invention provides an air purifier that is easy to clean, including an air purifier housing, a filter assembly, a negative pressure assembly, a disassembly mechanism, and a scraping mechanism;

[0050] In this embodiment, the air purifier housing includes an upper housing 1 and a lower housing 2, an air inlet is provided on the side of the lower housing 2, an air outlet is provided on the top of the upper housing 1, and the lower housing 2 is fixedly mounted on the bottom of the upper housing 1 by bolts;

[0051] Among them, the negative pressure component arranged inside the air purifier housing includes a centrifugal fan 8 and an air collecting hood 9. The top and bottom of the air collecting hood 9 are both opened. The air collecting hood 9 is fixedly installed inside the upper housing 1. The centrifugal fan 8 is fixedly installed inside the air collecting hood 9 through a support frame. The lower end of the air collecting hood 9 extends into the interior of the lower housing 2 and is connected to the interior of the lower housing 2. In order to improve safety, an air outlet grille is fixedly installed on the top of the upper housing 1;

[0052] The filter assembly for filtering the air entering the air purifier housing includes a smooth filter cartridge 6 and a pleated filter cartridge 7. The pleated filter cartridge 7 is sleeved inside the smooth filter cartridge 6. The lower end of the air collecting hood 9 is connected to the inside of the pleated filter cartridge 7.

[0053] Among them, the filter assembly can be detachably installed in the interior of the air purifier housing through a disassembly and assembly mechanism. In this embodiment, the disassembly and assembly mechanism includes a knob cover 4, a bottom cover 3 is fixedly installed on the bottom of the lower housing 2 by screws, and an assembly hole 301 for inserting the smooth-surface filter cartridge 6 and the pleated filter cartridge 7 into the interior of the upper housing 1 is opened at the bottom of the bottom cover 3, a lower pressure seat 5 is arranged on the top of the knob cover 4, and an upper pressure seat 15 is fixedly installed on the lower end outer wall of the air collecting hood 9 by screws, and the knob cover 4 can be detachably installed in the assembly hole 301 through a disassembly and assembly part, and the smooth-surface filter cartridge 6 and the pleated filter cartridge 7 are squeezed and limited between the lower pressure seat 5 and the upper pressure seat 15, so that when the scraper 11 cleans the surface of the smooth-surface filter cartridge 6, it will not drive the smooth-surface filter cartridge 6 to rotate, a first limit block 1501 is fixedly connected to the inner top of the upper pressure seat 15, and a second limit block 601 is fixedly connected to the top of the smooth-surface filter cartridge 6, and the first limit block 1501 can limit the second limit block 601;

[0054] The disassembly and assembly parts include an annular baffle plate 302 formed inside the bottom cover 3, an inverted L-shaped limit plate 401 formed on the outer wall of the upper end of the knob cover 4, and a slot 303 for inserting the inverted L-shaped limit plate 401 is opened on the inner wall of the annular baffle plate 302. After the inverted L-shaped limit plate 401 is inserted into the slot 303, the upper end of the inverted L-shaped limit plate 401 can be pressed on the top of the annular baffle plate 302 after rotation. When in use, the inverted L-shaped limit plate 401 on the knob cover 4 is pressed against the The quasi-slot 303 is inserted into the assembly hole 301, and then the knob cover 4 is rotated so that the upper end of the inverted L-shaped limiting plate 401 is pressed on the top of the annular baffle 302 to limit the knob cover 4 in the upward and downward directions. In order to prevent the knob cover 4 from spinning, a limiting protrusion 304 is formed on the inner wall of the annular baffle 302, and a notch 402 is formed on the upper end of the inverted L-shaped limiting plate 401, and the inverted L-shaped limiting plate 401 is clamped with the limiting protrusion 304 through the notch 402;

[0055] Among them, the scraping mechanism includes a gear ring 10 and a motor 12. The gear ring 10 is rotatably sleeved on the upper pressure seat 15. The motor 12 is fixedly installed on the inner top of the lower shell 2. A driving gear 13 is fixedly installed on the rotating shaft of the motor 12. The driving gear 13 is meshed with the gear ring 10. A scraper 11 is detachably installed on the bottom of the gear ring 10 through a locking mechanism. The bristles on the scraper 11 are in contact with the surface of the smooth-surface filter cartridge 6.

[0056] By adopting the above technical solution, when installing the smooth surface filter cartridge 6 and the pleated filter cartridge 7, the pleated filter cartridge 7 is inserted into the smooth surface filter cartridge 6, and then the smooth surface filter cartridge 6 is inserted into the lower shell 2 through the assembly hole 301 so that the top of the smooth surface filter cartridge 6 is against the inner bottom of the upper pressure seat 15, and then the lower pressure seat 5 is placed on the inner top of the knob cover 4, and then the inverted L-shaped limit plate 401 on the knob cover 4 is aligned with the slot 303 and inserted into the assembly hole 301, and then the knob cover 4 is rotated so that the inverted L-shaped limit plate 4 The notch 402 on the 01 is stuck on the limiting protrusion 304, thereby completing the installation of the knob cover 4. At this time, the smooth surface filter cartridge 6 is squeezed between the lower pressing seat 5 and the upper pressing seat 15; when it is necessary to remove the smooth surface filter cartridge 6, it is only necessary to rotate the knob cover 4 in the opposite direction to separate the notch 402 from the limiting protrusion 304. When the inverted L-shaped limiting plate 401 is rotated to the slot 303, the knob cover 4 can be removed by pulling downwards. At this time, the smooth surface filter cartridge 6 and the pleated filter cartridge 7 can be removed from the lower housing 2;

[0057] When in use, the centrifugal fan 8 is started, and the external air enters the lower shell 2 through the air inlet on the lower shell 2. The smooth surface filter cartridge 6 can be used to perform preliminary filtration on the air in the lower shell 2, intercepting impurities with larger particles, and then the air filtered by the smooth surface filter cartridge 6 is filtered by the pleated filter cartridge 7 for secondary filtration, filtering and intercepting finer impurities in the air, and then the filtered air is discharged from the air outlet on the upper shell 1. Through double-layer filtration, large particles of dust can be intercepted on the smooth surface filter cartridge 6, thereby effectively extending the service life of the pleated filter cartridge 7. When it is necessary to clean the dust accumulated on the surface of the smooth surface filter cartridge 6, the motor 12 is started, and then the gear ring 10 is driven to rotate. The rotating gear ring 10 drives the scraper 11 to rotate, scraping off the dust on the smooth surface filter cartridge 6 and dropping it into the lower press seat 5 for collection, effectively avoiding the blockage of the mesh of the smooth surface filter cartridge 6, thereby effectively reducing the replacement frequency of the pleated filter cartridge 7 and extending the service life of the pleated filter cartridge 7.

[0058] Specifically, the scraper 11 is an elastic rubber scraper. The elastic scraper can undergo corresponding deformation when the smooth-surface filter cartridge 6 is installed into the lower shell 2, thereby improving the smoothness of the installation of the smooth-surface filter cartridge 6 and will not cause damage to the smooth-surface filter cartridge 6 due to collision between the scraper 11 and the smooth-surface filter cartridge 6.

[0059] Specifically, the scraper 11 is arranged in a spiral shape. By arranging the scraper 11 in a spiral shape, the scraped dust can fall into the lower pressing seat 5 as much as possible, thereby reducing the adhesion between the dust and the bristles.

[0060] Specifically, in order to facilitate the disassembly and assembly of the scraper 11, the locking mechanism includes a mounting seat 1001 and an insert block 1101, the mounting seat 1001 is fixedly connected to the bottom of the gear ring 10, the insert block 1101 is fixedly connected to the top of the scraper 11, a concave through groove 10011 is provided on the side of the mounting seat 1001, the insert block 1101 is convexly arranged, and the insert block 1101 is inserted into the concave through groove 10011. In order to facilitate the smooth insertion of the insert block 1101 into the concave through groove 10011, guide cutouts 1103 are provided on both sides of the top of the insert block 1101, an arc-shaped card groove 1102 is provided on the side of the insert block 1101, an assembly groove 1002 connected to the concave through groove 10011 is provided inside the mounting seat 1001, a columnar card block 1004 and a spring 1005 are provided inside the assembly groove 1002, and the spring 1005 is provided inside. One end of the spring 1005 is against one end of the assembly slot 1002, and the other end of the spring 1005 is against the surface of the columnar block 1004. A partial area of ​​the columnar block 1004 can extend into the arc-shaped slot 1102. In some embodiments, the top and bottom of one end of the assembly slot 1002 close to the concave through slot 10011 are provided with a limiting portion 10021 to prevent the columnar block 1004 from escaping from the assembly slot 1002. In some embodiments, in order to avoid the bending of the spring 1005, a guide rod 1006 is fixedly connected to the columnar block 1004, and the spring 1005 is sleeved on the guide rod 1006. A guide groove 1003 connected to the assembly slot 1002 is provided on the side of the mounting seat 1001, and the guide rod 1006 is slidably inserted into the guide groove 1003 away from the end of the columnar block 1004.

[0061] By adopting the above technical solution, when the scraper needs to be cleaned or replaced, it is only necessary to pull the scraper 11 in the direction away from the gear ring 10. When the force of pulling the scraper 11 is greater than the elastic force of the spring 1005, the columnar block 1004 will be completely pressed into the assembly groove 1002, thereby completing the removal of the scraper 11.

[0062] When installing the scraper 11, insert the plug 1101 into the concave groove 10011. As the plug 1101 continues to move into the concave groove 10011, the cylindrical block 1004 is squeezed into the assembly groove 1002. At this time, the spring 1005 is in a compressed state. When the guide cutout 1103 moves to the cylindrical block 1004, a part of the cylindrical block 1004 is squeezed out from the assembly groove 1002 under the elastic force of the spring 1005 and pressed into the guide cutout 1103. At this point, the installation of the scraper 11 is completed.

[0063] Specifically, in this embodiment, a control panel 14 is fixedly installed on the top of the upper shell 1, and a control circuit board is fixedly installed on the bottom of the control panel 14. The control panel 14 is electrically connected to the control circuit board, and the centrifugal fan 8 and the motor 12 are both controlled by the control circuit board. Through this setting, the user can control the centrifugal fan 8 and the motor 12 by operating the corresponding control buttons on the control panel 14.

[0064] The above description shows and describes several preferred embodiments of the present invention, but as before, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept of this article through the above teachings or the technology or knowledge of the relevant field. And the changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. An air purifier that is easy to clean, characterized in that: It includes an air purifier shell, the top of the air purifier shell is provided with an air outlet, and the lower end side of the air purifier shell is provided with a plurality of air inlet holes; A filter assembly, the filter assembly is used to filter the air entering the air purifier housing, and the filter assembly is detachably mounted inside the air purifier housing through a disassembly and assembly mechanism; A negative pressure component, the negative pressure component is arranged inside the air purifier housing, and the negative pressure component is used to pump the inside of the air purifier housing into a negative pressure state, thereby sucking external air into the air purifier housing, and then exhausting it from the air outlet after being filtered by the filter component; A scraping mechanism, the scraping mechanism is used to scrape away dust accumulated on the surface of the filter assembly to extend the service life of the filter assembly; The air purifier housing comprises an upper housing (1) and a lower housing (2), the air inlet is provided on the side of the lower housing (2), the air outlet is provided on the top of the upper housing (1), and the lower housing (2) is fixedly mounted on the bottom of the upper housing (1) by means of bolts; The negative pressure assembly comprises a centrifugal fan (8) and an air collecting hood (9), the top and bottom of the air collecting hood (9) are both opened, the air collecting hood (9) is fixedly mounted inside the upper shell (1), the centrifugal fan (8) is fixedly mounted inside the air collecting hood (9) via a support frame, and the lower end of the air collecting hood (9) extends into the interior of the lower shell (2) and is in communication with the interior of the lower shell (2); The filter assembly comprises a smooth-surface filter cartridge (6) and a pleated filter cartridge (7), wherein the pleated filter cartridge (7) is sleeved inside the smooth-surface filter cartridge (6), and the lower end of the air collecting hood (9) is connected to the inside of the pleated filter cartridge (7); The disassembly and assembly mechanism comprises a knob cover (4), a bottom cover (3) is fixedly mounted on the bottom of the lower shell (2) by screws, an assembly hole (301) is provided at the bottom of the bottom cover (3) for inserting the smooth-surface filter cartridge (6) and the pleated filter cartridge (7) into the interior of the lower shell (2), a lower pressure seat (5) is arranged on the top of the knob cover (4), an upper pressure seat (15) is fixedly mounted on the outer wall of the lower end of the air collecting hood (9) by screws, and the knob cover (4) is disassembled by The assembly is detachably mounted in the assembly hole (301); the smooth-surface filter cartridge (6) and the pleated filter cartridge (7) are squeezed and limited between the lower press seat (5) and the upper press seat (15); the inner top of the upper press seat (15) is fixedly connected with a first limit block (1501); the top of the smooth-surface filter cartridge (6) is fixedly connected with a second limit block (601); the first limit block (1501) can limit the second limit block (601); The disassembly and assembly part comprises an annular baffle (302) formed and arranged inside the bottom cover (3); an inverted L-shaped limiting plate (401) is formed and arranged on the outer wall of the upper end of the knob cover (4); a slot (303) for inserting the inverted L-shaped limiting plate (401) is provided on the inner wall of the annular baffle (302); after the inverted L-shaped limiting plate (401) is inserted into the slot (303), the upper end of the inverted L-shaped limiting plate (401) can be pressed on the top of the annular baffle (302) after rotation; a limiting protrusion (304) is formed and arranged on the inner wall of the annular baffle (302); a notch (402) is provided on the upper end of the inverted L-shaped limiting plate (401); and the inverted L-shaped limiting plate (401) is clamped with the limiting protrusion (304) through the notch (402); The scraping mechanism comprises a gear ring (10) and a motor (12), wherein the gear ring (10) is rotatably sleeved on the upper pressure seat (15), and the motor (12) is fixedly mounted on the inner top of the lower shell (2), and a driving gear (13) is fixedly mounted on the rotating shaft of the motor (12), and the driving gear (13) is meshed with the gear ring (10), and a scraper (11) is detachably mounted on the bottom of the gear ring (10) through a locking mechanism, and the bristles on the scraper (11) are in contact with the surface of the smooth-surface filter cartridge (6); The locking mechanism comprises a mounting seat (1001) and an insert block (1101); the mounting seat (1001) is fixedly connected to the bottom of the gear ring (10); the insert block (1101) is fixedly connected to the top of the scraper (11); a concave through groove (10011) is provided on the side of the mounting seat (1001); the insert block (1101) is convexly arranged; the insert block (1101) is inserted into the concave through groove (10011); an arc-shaped slot (1102) is provided on the side of the insert block (1101); and a slot (1102) is provided inside the mounting seat (1001) that is aligned with the concave through groove. (10011) and a mounting groove (1002) connected to each other, a columnar block (1004) and a spring (1005) are arranged inside the mounting groove (1002), one end of the spring (1005) abuts against one end of the mounting groove (1002), and the other end of the spring (1005) abuts against the surface of the columnar block (1004), the columnar block (1004) is slidably arranged inside the mounting groove (1002), and a partial area of ​​the columnar block (1004) can extend into the arc-shaped slot (1102); an air outlet grille is fixedly installed on the top of the upper shell (1).

2. The air purifier for easy dust cleaning according to claim 1, characterized in that: The top and bottom of one end of the assembly groove (1002) close to the concave through groove (10011) are both provided with limiting portions (10021) for preventing the columnar block (1004) from escaping from the assembly groove (1002).

3. The air purifier for easy dust cleaning according to claim 1, characterized in that: A guide rod (1006) is fixedly connected to the columnar block (1004), the spring (1005) is sleeved on the guide rod (1006), a guide groove (1003) connected to the assembly groove (1002) is provided on the side of the mounting seat (1001), and one end of the guide rod (1006) away from the columnar block (1004) is slidably inserted into the guide groove (1003).

4. The air purifier for easy dust cleaning according to claim 1, characterized in that: Both sides of the top of the insert block (1101) are provided with guide cutouts (1103).

5. The air purifier for easy dust cleaning according to claim 1, characterized in that: The scraper (11) is arranged in a spiral shape.

6. The air purifier for easy cleaning according to claim 5, characterized in that: The scraper (11) is an elastic rubber scraper.

7. The air purifier for easy dust cleaning according to claim 2, characterized in that: A control panel (14) is fixedly mounted on the top of the upper shell (1), a control circuit board is fixedly mounted on the bottom of the control panel (14), the control panel (14) is electrically connected to the control circuit board, and the centrifugal fan (8) and the motor (12) are both controlled by the control circuit board.

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