CN112082231A - A multifunctional air purifier - Google Patents

Abstract

The invention belongs to the technical field of household appliances, and particularly relates to a multifunctional air purifier which comprises a body; a group of air inlet holes are formed in the front of the body and close to the bottom of the body; an air outlet is formed in the top of the body, a filtering unit is connected to the position, corresponding to the air inlet hole, of the inner wall of the body in a sliding mode, a sliding rod is connected to a sliding hole formed in one side, away from the air inlet hole, of the filtering unit in a sliding mode, and a rotating pin is fixedly connected to one end, away from the filtering unit, of the sliding rod; a conveying belt is arranged between the fan and the filtering unit, and a group of wedge-shaped blocks are uniformly distributed on the periphery of the conveying belt and at the position corresponding to the rotating pin; a trapezoidal limiting block is arranged between the rotary pin and the filtering unit and is fixedly connected with the body through a bracket; according to the invention, the wedge-shaped block drives the rotating pin to slide along one side of the limiting block close to the conveying belt and move upwards, and meanwhile, the bristles clean the filtering unit, so that the cleaning of the filtering unit is ensured.

Description

A multifunctional air purifier

technical field

The invention belongs to the technical field of household appliances, in particular to a multifunctional air purifier.

Background technique

An air cleaner or purifier may be a device that draws in contaminated air, filters or purifies the contaminated air, and then discharges the purified air. For example, an air purifier may include: a blower device or a fan for introducing outside air into the interior of the air cleaner; and a filter for filtering out dust, bacteria, and other foreign matter (hereinafter referred to as the air) from the air "foreign body"). Typically, purifiers can be configured to purify interior spaces or rooms such as a home or office.

There are also some technical solutions about air purifiers in the prior art. For example, a Chinese patent with an application number of 2017111513029 discloses a multifunctional air purifier, which includes a housing composed of a base, a front shell and a rear fixing plate. The top surface of the front shell is provided with an air outlet, the lower end of the front case is provided with an air intake hole, and the air intake hole and the air outlet are respectively provided with protective nets; a support frame for drying socks is installed on the outside of the air outlet; There are negative pressure fans, large particle dust filters, HEPA filters, activated carbon filters, and UV lamps in sequence from bottom to top; electric heating pipes are also installed inside the front shell; the air inlets of the negative pressure fans are aligned with the intake air of the front shell. hole, the air outlet of the negative pressure fan is aligned with the inside of the front shell.

However, in the prior art, the air purifier filters the large particles of dust and hair in the air through the filter screen, but the filter screen is easy to adhere to excessively thick impurities after long-term use, which affects the ventilation capacity of the purifier, and at the same time easily breeds bacteria and viruses, causing Secondary air pollution requires frequent cleaning, which increases labor intensity and difficulty in use, which is not conducive to the long-term and efficient work of the purifier.

To this end, the present invention provides a multifunctional air purifier.

SUMMARY OF THE INVENTION

In order to make up for the deficiencies of the prior art, it is solved that the air purifier filters the large particles of dust and hair in the air through the filter screen in the prior art, but the filter screen is easy to adhere to excessively thick impurities after long-term use, which affects the ventilation volume of the purifier. At the same time, it is easy to breed bacteria and viruses, causing secondary air pollution, requiring frequent cleaning, increasing labor intensity and difficulty in use, and is not conducive to the long-term and efficient work of the purifier. A multifunctional air purifier is proposed in the present invention.

The technical solution adopted by the present invention to solve the technical problem is as follows: a multifunctional air purifier according to the present invention includes a main body; a group of air inlet holes are opened in front of the main body near the bottom; the top of the main body is provided with an outlet The air inlet is provided with a fan and a draft hood at the position opposite to the air inlet hole in the body, and the draft hood is communicated with the air outlet; a filter unit is slidably connected to the corresponding position of the inner wall of the body and the air inlet hole, and the filter unit is far away from the air inlet hole. A sliding rod is slidably connected in the sliding hole opened on one side, and a rotating pin is fixedly connected to the end of the sliding rod away from the filter unit; the position between the fan and the filter unit is provided with a conveyor belt, and the conveyor belt is composed of a driving roller and a driven roller. Tensioned and driven to rotate, the driving roller is driven by a motor; a group of wedge-shaped blocks are evenly distributed on the outer circumference of the conveyor belt and the corresponding positions of the rotating pins; a trapezoidal limit block is arranged between the rotating pin and the filter unit, and the limit block passes through The bracket is fixedly connected with the main body; the rotating pin is lifted to the top of the limit block through the wedge-shaped block, and then slides down and resets along the side of the limit block away from the conveyor belt; the inner wall of the main body is provided with bristles at the corresponding position of the filter unit; In the prior art, the air purifier filters the large particles of dust and hair in the air through the filter screen, but the filter screen is easy to adhere to excessively thick impurities after long-term use, which affects the ventilation of the purifier and easily breeds bacteria and viruses. Causes secondary air pollution, which requires frequent cleaning, increases labor intensity and difficulty in use, and is not conducive to the long-term and efficient work of the purifier; at this time, the conveyor belt is driven by the driving roller to rotate counterclockwise, and then the wedge block drives the pin along the limit. The block slides and moves upwards on the side close to the conveyor belt, and at the same time makes the bristles clean the filter unit, thereby ensuring the cleaning of the filter unit, reducing the cleaning frequency of the air purifier, and ensuring the long-term and efficient operation of the air purifier. When the wedge-shaped block drives the rotation After the pin moves to the top of the limit block, the wedge-shaped block is separated from the rotating pin. Under the action of the filter unit's own weight, the rotating pin and the sliding rod slide toward the filter unit, and then the filter unit falls and resets under the action of its own weight. The normal filtering effect of the filter unit.

Preferably, a butterfly-shaped airbag is fixedly connected to a groove formed at a position corresponding to the bottom of the filter unit in the body; an exhaust hole is formed at the top of the butterfly-shaped airbag; the filter unit is free to fall and slide downward through the elastic deformation of the butterfly-shaped airbag. At the same time, the butterfly-shaped airbag is compressed to generate compressed air, and the compressed air is ejected upward through the exhaust hole, thereby increasing the cleaning effect of impurities adhering to the filter unit.

Preferably, the filter unit includes a frame, a pre-filter and a rear-filter; the pre-filter and the rear-filter are both fixed on the inner circumference of the frame; the pre-filter and the rear-filter are A group of jet pipes are evenly distributed in the vertical direction, and a group of jet holes are evenly set on the jet pipes; the jet pipes are communicated with the exhaust holes after moving down; The compressed air in the air bag is filled into the jet pipe through the exhaust hole, and then ejected from the jet hole, and then recoils the pre-filter, further increasing the cleaning area of the dust on the pre-filter, and further increasing the pre-filter Net cleaning effect.

Preferably, the diameter of the air injection hole is less than one tenth of the diameter of the air injection pipe; the air injection pipe can be expanded in the radial direction; since the diameter of the air injection hole is less than one tenth of the diameter of the air injection pipe, the air ejected from the air injection hole is increased. The outflow speed increases the impact force of the air ejected from the jet hole on the filter screen, and further increases the cleaning effect. At the same time, after the air pressure in the jet pipe increases, the jet pipe expands in the radial direction, and then the front filter screen and the rear filter screen are separated. To separate, increase the ventilation efficiency of the filter unit, and further increase the cleaning effect of the pre-filter screen by the compressed air ejected from the air jet hole.

Preferably, the initial position of the jet pipe corresponds to the air inlet hole; the rear filter screen is provided with a chute on the side close to the exhaust pipe, the sliding block slidingly connected in the chute is fixedly connected with the jet pipe, and the filter unit is under the filter unit. The backward jet pipe and the air inlet hole are staggered with each other; after sliding down through the filter unit, the jet pipe presses against the butterfly airbag and drives the jet pipe to move up relative to the frame, so that the slider slides in the chute and drives the jet pipe to move laterally. , so that the jet pipe and the air inlet hole are staggered with each other, thereby ensuring the air inlet volume of the filter unit and increasing the purification efficiency of the air purifier.

Preferably, a cleaning roller is rotatably connected to the corresponding position of the bristles in the body, the circumference of the bristles is evenly distributed on the outer circumference of the cleaning roller, a gear is fixedly connected to one side of the cleaning roller, and a rack is fixedly connected to the corresponding position of the gear on the frame. The rack and the gear mesh with each other; the frame slides up under the drive of the conveyor belt, so that the rack slides up and drives the gear to rotate, and the gear drives the cleaning roller and the bristles to rotate, which increases the cleaning efficiency of the bristles on the front filter and further reduces the front filter. Remove impurities and hairs adhering to the filter screen to ensure the cleanliness of the filter unit.

Preferably, an elastic band is wound around the outer circumference of the cleaning roller, and the elastic band returns to a straight state after being separated from the cleaning roller; the side of the elastic band away from the cleaning roller is fixed with the bristles; the area of the bristles is increased by the elastic band, thereby increasing the bristles. The cleaning effect reduces the cleaning effect of the filter unit after reducing the excessive impurities on the bristles. At the same time, the bristles adhering to the impurities are wrapped around the cleaning roller with the elastic belt, so that the bristles that are far away from the cleaning roller and not adhered to the impurities move downward. After contacting with the filter unit and cleaning impurities, the cleaning efficiency of the bristles on impurities is increased.

Preferably, the cleaning roller is provided with water inlet holes, and the water inlet holes are respectively connected with the water tank and the outer periphery of the cleaning roller; the water inlet holes are connected with the water tank and the outer periphery of the cleaning roller, so that the water in the water tank wets the bristles and the filter unit, thereby increasing the The humidity of the air flowing through the air purifier increases the humidification effect of the air.

The beneficial effects of the present invention are as follows:

1. The multifunctional air purifier of the present invention drives the conveyor belt to rotate counterclockwise through the driving roller, and then drives the rotating pin to slide and move upward along the side of the limit block close to the conveyor belt through the wedge-shaped block. The bristles clean the filter unit, thereby ensuring the cleaning of the filter unit, reducing the cleaning frequency of the air purifier, and ensuring the long-term and efficient operation of the air purifier.

2. The multifunctional air purifier of the present invention slides upwards under the drive of the conveyor belt through the frame, so that the rack slides up and drives the gear to rotate, and the gear drives the cleaning roller and the bristles to rotate, increasing the bristles to the front. The cleaning efficiency of the filter screen further reduces the impurities and hair adhered to the pre-filter screen and ensures the cleanliness of the filter unit.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is the perspective view of the present invention;

Fig. 2 is a partial cross-sectional view of the present invention;

Fig. 3 is a partial enlarged view at A in Fig. 2;

Fig. 4 is a partial enlarged view at B in Fig. 2;

5 is a perspective view of a filter unit in the present invention;

Fig. 6 is the front view of filter unit in the present invention;

In the figure: main body 1, air inlet hole 11, air outlet 12, fan 13, draft hood 14, filter unit 2, sliding hole 21, sliding rod 22, rotating pin 23, conveyor belt 15, driving roller 16, driven roller 17. Wedge block 18, limit block 19, bristles 3, butterfly airbag 24, frame 25, pre-filter 26, rear filter 27, jet pipe 28, jet hole 29, chute 4, slider 41, Cleaning roller 31 , gear 32 , rack 33 , elastic belt 34 .

Detailed ways

In order to make it easy to understand the technical means, creation features, achieved goals and effects of the present invention, the present invention will be further described below with reference to the specific embodiments.

As shown in FIG. 1 to FIG. 6 , a multifunctional air purifier according to the present invention includes a main body 1; a group of air inlet holes 11 are opened in front of the main body 1 near the bottom; the top of the main body 1 is provided with an outlet Air outlet 12, a fan 13 and a draft hood 14 are provided in the body 1 at the position opposite to the air inlet hole 11, and the draft hood 14 is communicated with the air outlet 12; Unit 2, the sliding hole 21 opened on the side of the filter unit 2 away from the air inlet hole 11 is slidably connected with a sliding rod 22, and the end of the sliding rod 22 away from the filter unit 2 is fixedly connected with a turn pin 23; the fan 13 is connected to the filter unit. There is a conveyor belt 15 at the position between A set of wedge-shaped blocks 18; a trapezoidal limit block 19 is arranged between the rotating pin 23 and the filter unit 2, and the limiting block 19 is fixedly connected with the main body 1 through a bracket; the rotating pin 23 is lifted to the limit by the wedge-shaped block 18 The top of the position block 19 slides down and resets along the side of the limit block 19 away from the conveyor belt 15; the inner wall of the main body 1 is provided with bristles 3 at the corresponding positions of the filter unit 2; The filter screen filters large particles of dust and hair in the air, but the filter screen is easy to adhere to excessively thick impurities after long-term use, which affects the ventilation volume of the purifier, and at the same time, it is easy to breed bacteria and viruses, causing secondary air pollution, which requires frequent cleaning. , increasing the labor intensity and difficulty of use, which is not conducive to the long-term and efficient work of the purifier; at this time, the conveyor belt 15 is driven by the driving roller 16 to rotate counterclockwise, and then the wedge-shaped block 18 drives the pin 23 to approach the conveyor belt 15 along the limit block 19 The side of the air purifier slides and moves upward, and at the same time, the bristles 3 clean the filter unit 2, thereby ensuring the cleaning of the filter unit 2, reducing the cleaning frequency of the air purifier, and ensuring the long-term and efficient operation of the air purifier. When the wedge-shaped block 18 drives the rotation After the pin 23 moves to the top of the limit block 19, the wedge block 18 is separated from the rotating pin 23. Under the action of the self-weight of the filter unit 2, the rotating pin 23 and the sliding rod 22 slide toward the direction close to the filter unit 2, and then the filter unit 2 is in the direction of the filter unit 2. It falls and resets under the action of its own weight to maintain the normal filtering effect of the filter unit 2 .

As an embodiment of the present invention, a butterfly-shaped airbag 24 is fixedly connected to a groove formed in the main body 1 at the corresponding position at the bottom of the filter unit 2; the top of the butterfly-shaped airbag 24 is provided with an exhaust hole; The elastic deformation of the filter unit 2 absorbs the impact force of the filter unit 2 sliding down freely, thereby reducing the noise and impact damage of the filter unit 2. At the same time, the butterfly airbag 24 is compressed to generate compressed air, and the compressed air is ejected upward through the exhaust hole, and then Increase the cleaning effect of the adhering impurities on the filter unit 2.

As an embodiment of the present invention, the filter unit 2 includes a frame 25, a pre-filter 26 and a rear filter 27; the pre-filter 26 and the rear filter 27 are both fixed to the frame The inner circumference of 25; a group of jet pipes 28 are evenly distributed in the vertical direction between the front filter screen 26 and the rear screen screen 27, and a group of jet holes 29 are evenly provided on the jet pipe 28; The exhaust hole is connected; after the jet pipe 28 is moved down, it is communicated with the exhaust hole, so that the compressed air in the butterfly airbag 24 is charged into the jet pipe 28 through the exhaust hole, and then ejected from the jet hole 29, and then the front The filter screen 26 is recoiled, which further increases the cleaning area of the dust on the pre-filter screen 26 and further increases the cleaning effect of the pre-filter screen 26 .

As an embodiment of the present invention, the diameter of the air injection hole 29 is less than one tenth of the diameter of the air injection pipe 28; the air injection pipe 28 can be expanded in the radial direction; One part, increase the outflow speed of the air ejected from the air injection hole 29, increase the impact force of the air ejected from the air injection hole 29 on the filter screen, further increase the cleaning effect, and the air pressure in the air injection pipe 28 is increased to make the air injection pipe 28 along the diameter. It expands in the direction to separate the pre-filter 26 from the rear filter 27 , thereby increasing the ventilation efficiency of the filter unit 2 , and further increasing the cleaning effect of the pre-filter 26 by the compressed air ejected from the air injection hole 29 .

As an embodiment of the present invention, the initial position of the jet pipe 28 corresponds to the air inlet hole 11; the rear filter screen 27 is provided with a chute 4 on the side close to the exhaust pipe, and the chute 4 is slidably connected The slider 41 is fixedly connected with the jet pipe 28. After the filter unit 2 falls, the jet pipe 28 and the air inlet hole 11 are staggered to each other; The frame 25 is moved up, so that the slider 41 slides in the chute 4 and drives the jet pipe 28 to move laterally, so that the jet pipe 28 and the air inlet hole 11 are staggered from each other, thereby ensuring the air intake of the filter unit 2 and increasing the air purifier. purification efficiency.

As an embodiment of the present invention, a cleaning roller 31 is rotatably connected to the corresponding position of the bristles 3 in the body 1, the bristles 3 are evenly distributed on the outer circumference of the cleaning roller 31, and a gear 32 is fixedly connected to one side of the cleaning roller 31. A rack 33 is fixedly connected to the frame 25 at a position corresponding to the gear 32, and the rack 33 and the gear 32 mesh with each other; the frame 25 slides upward under the drive of the conveyor belt 15, so that the rack 33 slides up and drives the gear 32 to rotate, The gear 32 drives the cleaning roller 31 and the bristles 3 to rotate, which increases the cleaning efficiency of the bristles 3 on the pre-filter 26 , further reduces impurities and hairs adhering to the pre-filter 26 , and ensures the cleaning of the filter unit 2 .

As an embodiment of the present invention, an elastic band 34 is wound around the outer circumference of the cleaning roller 31, and the elastic band 34 is separated from the cleaning roller 31 and returns to a straight state; the side of the elastic band 34 away from the cleaning roller 31 is fixedly connected with the bristles 3 ; Increase the area of the bristles 3 through the elastic band 34, thereby increasing the cleaning effect of the bristles 3, reducing the cleaning effect of the filter unit 2 after reducing excessive impurities on the bristles 3, while the bristles 3 adhering to the impurities follow the elastic band 34 It is wound on the cleaning roller 31, so that the bristles 3 that are far away from the cleaning roller 31 and not adhered to impurities move downwards and then come into contact with the filter unit 2 and clean the impurities, thereby increasing the cleaning efficiency of the bristles 3 for impurities.

As an embodiment of the present invention, the cleaning roller 31 is provided with water inlet holes, and the water inlet holes are respectively connected with the water tank and the outer periphery of the cleaning roller 31; The bristles 3 and the filter unit 2 are wetted, thereby increasing the humidity of the air flowing through the air purifier and increasing the humidification effect of the air.

During operation, the conveyor belt 15 is driven by the driving roller 16 to rotate counterclockwise, and then the wedge-shaped block 18 drives the turn pin 23 to slide and move upward along the side of the limit block 19 close to the conveyor belt 15, and at the same time make the bristles 3 to the filter unit 2 Cleaning is carried out to ensure the cleaning of the filter unit 2, reduce the cleaning frequency of the air purifier, and ensure the long-term and efficient operation of the air purifier. The pin 23 is disengaged. Under the action of the self-weight of the filter unit 2, the rotating pin 23 and the sliding rod 22 slide towards the direction close to the filter unit 2, and then the filter unit 2 falls and resets under the action of its own weight, maintaining the normal filtering effect of the filter unit 2. ; Absorb the impact force of the filter unit 2 sliding downward through the elastic deformation of the butterfly-shaped airbag 24, thereby reducing noise and impact damage of the filter unit 2, while the butterfly-shaped airbag 24 is compressed to generate compressed air, and the compressed air is exhausted. The holes are ejected upward, thereby increasing the cleaning effect of the impurities adhering to the filter unit 2; after the air jet pipe 28 is moved down, it is communicated with the exhaust hole, so that the compressed air in the butterfly airbag 24 is filled into the air injection pipe 28 through the exhaust hole. In the middle, it is sprayed out from the air injection hole 29, and then the pre-filter screen 26 is recoiled, and the cleaning area of the dust on the pre-filter screen 26 is further increased, and the cleaning effect of the pre-filter screen 26 is further increased; due to the air injection hole 29 The diameter is less than one-tenth of the diameter of the jet pipe 28, the outflow speed of the air jetted from the jet hole 29 is increased, the impact force of the air jetted from the jet hole 29 on the filter screen is increased, and the cleaning effect is further increased, and the air pressure in the jet pipe 28 is increased. After the height is high, the air jet pipe 28 is expanded in the radial direction, and then the pre-filter screen 26 and the rear filter screen 27 are separated, so as to increase the ventilation efficiency of the filter unit 2, and further increase the air jet hole 29 to eject compressed air to the pre-filter screen. The cleaning effect of the net 26; after sliding down through the filter unit 2, after the jet pipe 28 is pressed against the butterfly airbag 24, the jet pipe 28 is driven to move up relative to the frame 25, so that the slider 41 drives the jet pipe after sliding in the chute 4 After the 28 is moved laterally, the jet pipe 28 and the air inlet hole 11 are staggered to each other, thereby ensuring the air inlet volume of the filter unit 2 and increasing the purification efficiency of the air purifier; the frame 25 is driven by the conveyor belt 15. After the strip 33 slides up, it drives the gear 32 to rotate, and the gear 32 drives the cleaning roller 31 and the bristles 3 to rotate, which increases the cleaning efficiency of the bristles 3 on the pre-filter 26, further reduces the impurities and hairs adhered to the pre-filter 26, and ensures filtration. The cleaning of the unit 2; the area of the bristles 3 is increased by the elastic belt 34, thereby increasing the cleaning effect of the bristles 3, reducing the cleaning effect of the filter unit 2 after reducing the excessive impurities on the bristles 3, and the bristles 3 adhering impurities at the same time. The elastic belt 34 is wound on the cleaning roller 31, so that the bristles 3 that are far away from the cleaning roller 31 and not adhering to impurities move downwards and then come into contact with the filter unit 2 and clean the impurities, increasing the cleaning efficiency of the bristles 3 for impurities; through the water inlet hole It communicates with the water tank and the periphery of the cleaning roller 31, so that the water in the water tank wets the bristles 3 and The filter unit 2 further increases the humidity of the air flowing through the air purifier and increases the humidification effect of the air.

The above-mentioned front, back, left, right, top and bottom are all based on Figure 1 in the accompanying drawings of the description, and according to the observation angle of the person as a standard, the side of the device facing the observer is defined as the front, and the left side of the observer is defined as the left, And so on.

In the description of the present invention, it should be understood that the terms "center", "portrait", "horizontal", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that The device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present invention.

The foregoing has shown and described 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-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have Various changes and modifications fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. A multifunctional air purifier, characterized in that: it comprises a main body (1); a group of air inlet holes (11) are provided in front of the main body (1) near the bottom; the top of the main body (1) is provided with an outlet. The air outlet (12) is provided with a fan (13) and a draft hood (14) at the position opposite to the air inlet hole (11) in the body (1), and the draft hood (14) is communicated with the air outlet (12); the A filter unit (2) is slidably connected to the inner wall of the main body (1) and the corresponding position of the air inlet hole (11), and a sliding connection is slidably connected to a sliding hole (21) provided on the side of the filter unit (2) away from the air inlet hole (11). The rod (22), the end of the sliding rod (22) away from the filter unit (2) is fixedly connected with a rotating pin (23); the position between the fan (13) and the filter unit (2) is provided with a conveyor belt (15) , the conveyor belt (15) is tensioned and driven to rotate by the driving roller (16) and the driven roller (17), and the driving roller (16) is driven by the motor; the outer circumference of the conveyor belt (15) corresponds to the position of the pin (23) A set of wedge-shaped blocks (18) are evenly distributed; a trapezoidal limit block (19) is arranged between the rotating pin (23) and the filter unit (2), and the limit block (19) is fixed to the main body (1) through a bracket connected; the pivot pin (23) is lifted to the top of the limit block (19) through the wedge-shaped block (18), and then slides down along the side of the limit block (19) away from the conveyor belt (15) and resets; the body (1) Brush bristles (3) are provided at positions corresponding to the inner wall of the filter unit (2). 2. A multifunctional air purifier according to claim 1, characterized in that: a butterfly airbag (24) is fixedly connected to a groove opened at a corresponding position at the bottom of the filter unit (2) in the body (1). ); an air vent is provided at the top of the butterfly airbag (24). 3. A multifunctional air purifier according to claim 2, wherein the filter unit (2) comprises a frame (25), a pre-filter (26) and a rear filter (27) ); the pre-filter (26) and the rear filter (27) are both fixed on the inner circumference of the frame (25); the vertical direction between the pre-filter (26) and the rear filter (27) A group of air injection pipes (28) are evenly distributed, and a group of air injection holes (29) are evenly provided on the air injection pipes (28); the air injection pipes (28) are communicated with the exhaust holes after moving down. 4. A multifunctional air purifier according to claim 3, characterized in that: the diameter of the air injection hole (29) is less than one tenth of the diameter of the air injection pipe (28); the air injection pipe (28) can be expand in the radial direction. 5. A multifunctional air purifier according to claim 4, characterized in that: the initial position of the jet pipe (28) corresponds to the air inlet hole (11); the rear filter screen (27) is close to the exhaust One side of the air pipe is provided with a chute (4), and the slider (41) slidably connected in the chute (4) is fixedly connected with the jet pipe (28). The air holes (11) are staggered from each other. 6. A multifunctional air purifier according to claim 5, characterized in that: a cleaning roller (31) is rotatably connected to the corresponding position of the bristles (3) in the body (1), and the bristles (3) have an even circumference. The cleaning roller (31) is clothed on the outer circumference of the cleaning roller (31), a gear (32) is fixedly connected to one side of the cleaning roller (31), and a rack (33) is fixedly connected to the frame (25) at a position corresponding to the gear (32). 33) Intermesh with the gear (32). 7. A multifunctional air purifier according to claim 6, characterized in that an elastic band (34) is wound around the outer circumference of the cleaning roller (31), and the elastic band (34) is separated from the cleaning roller (31) and returns to a flat surface Straight state; the side of the elastic band (34) away from the cleaning roller (31) is fixedly connected with the bristles (3). 8 . The multifunctional air purifier according to claim 7 , wherein the cleaning roller ( 31 ) is provided with water inlet holes, and the water inlet holes are respectively connected with the water tank and the outer periphery of the cleaning roller ( 31 ). 9 .

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