CN214108116U

CN214108116U - Clean device of maintaining of central air conditioning

Info

Publication number: CN214108116U
Application number: CN202023340138.6U
Authority: CN
Inventors: 吕品; 王红洋; 郑文滔
Original assignee: Ningbo Xinshengmei Energy Saving Technology Co ltd
Current assignee: Ningbo Xinshengmei Energy Saving Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-09-03
Anticipated expiration: 2030-12-31

Abstract

The utility model provides a clean device of maintaining of central air conditioning belongs to the clean technical field of maintaining of air conditioner. The cleaning and maintaining device of the central air conditioner comprises a lifting dust suction mechanism and a cleaning mechanism. The lift dust absorption mechanism includes bottom plate, supporting seat, dust absorption fan, dust collection box and lift driving piece, the dust cover bottom through dust absorption hose communicate in the dust collection box top, the dust cover pass through mounting bracket fixed connection in the lift driving piece, sealed enclose keep off slide peg graft in around the dust cover top, second motor output runs through dust cover and tip transmission connect in first lead screw one end, the perpendicular spiro union of level has the slip table on the first lead screw, first motor output transmission connect in clean round brush one end, the utility model discloses can clean the maintenance to air outlet or the return air inlet of central air conditioning indoor set fast conveniently, clean effectual, and at the cleaning-up in-process, can collect the dust.

Description

Clean device of maintaining of central air conditioning

Technical Field

The utility model relates to a clean field of maintaining of air conditioner particularly, relates to a clean device of maintaining of central air conditioning.

Background

The central air conditioning system is composed of one or more cold and heat source systems and a plurality of air conditioning systems, and the system is different from the traditional refrigerant type air conditioner and intensively processes air to meet the comfort requirement. The principle of liquid gasification refrigeration is adopted to provide the required cold energy for the air conditioning system so as to offset the heat load of the indoor environment; heating system provides required heat for air conditioning system for offset indoor environment changes in temperature load, uses the back for a long time at central air conditioning, can pile up a large amount of dusts in the supply-air outlet and the return air inlet of indoor set, and the indoor set generally is located indoor ceiling, and the manual cleaning is very inconvenient, and clean effect is unsatisfactory, and the amount of labour is very big.

SUMMERY OF THE UTILITY MODEL

In order to make up for the above deficiency, the utility model provides a central air conditioning cleaning and maintenance device, which aims to improve the problems provided in the background technology.

The utility model discloses a realize like this:

the utility model provides a clean device of maintaining of central air conditioning, including lift dust absorption mechanism and clearance mechanism.

The lifting dust collection mechanism comprises a bottom plate, a supporting seat, a dust collection fan, a dust collection box and a lifting driving piece, wherein walking wheels are installed at four corners of the bottom plate, the supporting seat is fixedly connected to the top of the bottom plate, the dust collection fan and the dust collection box are installed in the supporting seat, the dust collection fan is communicated with one side of the dust collection box, and the lifting driving piece is fixed to the top of the supporting seat.

The cleaning mechanism comprises a dust cover, a sealing enclosure, a first lead screw, a first motor, a cleaning rolling brush and a second motor, the dust cover is in an open funnel shape, the bottom end of the dust cover is communicated with the top of the dust collection box through a dust collection hose, the dust cover is fixedly connected in the lifting driving piece through a mounting rack, the sealing enclosure is inserted around the top of the dust cover in a sliding manner, the first lead screw is transversely rotatably connected to the top of the dust cover close to an opening, the second motor is arranged on the outer side wall of the dust cover, the output end of the second motor penetrates through the dust cover and is in end transmission connection with one end of the first lead screw, the first lead screw is horizontally and vertically screwed with a sliding table, one end of the sliding table, which is far away from the first lead screw, is slidably connected to the inner wall of the dust cover through a support, and the first motor is arranged at one end of the top of the sliding table, the output end of the first motor is in transmission connection with one end of the cleaning rolling brush, and the other end of the cleaning rolling brush is in rotation connection with the support.

The utility model discloses an in an embodiment, clearance mechanism is still including sweeping the subassembly, it includes air exhauster, defeated wind hose, air distribution pipe and nozzle to sweep the subassembly, the air exhauster is installed on the mounting bracket, defeated wind hose one end communicate in the air exhauster output, the air distribution pipe symmetry sets up two, two the air distribution pipe parallel arrangement respectively in clean round brush both sides, defeated wind hose other end communicates in two through the tee bend the air distribution pipe, nozzle equidistance interval sets up a plurality of, the nozzle all communicates in two the air distribution pipe top, the nozzle air outlet is the loudspeaker form, just the nozzle air outlet upwards sets up perpendicularly.

The utility model discloses an in one embodiment, the lift driving piece includes third motor, transmission case, second lead screw and support frame, transmission case fixed connection in the supporting seat top, the third motor install in the transmission bottom of the case portion, support frame fixed connection in the transmission top of the case portion, the vertical symmetry of second lead screw sets up two, and two the second lead screw all rotate connect in the both sides that the support frame is relative, second lead screw bottom runs through the support frame diapire extends to in the transmission case, the third motor pass through the driving medium transmission connect in second lead screw bottom, every equal interval spiro union has two thread bushings on the second lead screw.

The utility model discloses an in one embodiment, the thread bush all through connecting block fixed connection in the mounting bracket, the thread bush is close to one side of support frame inside wall is provided with the location slider, the support frame inside wall seted up with the location spout of location slider adaptation.

The utility model discloses an in one embodiment, the driving medium includes first belt pulley, belt and second belt pulley dish, first belt pulley cover is located the third motor output, second belt pulley cover is located second lead screw bottom, belt transmission connect in first belt pulley with between the second belt pulley dish.

The utility model discloses an in one embodiment, the slot has been seted up in the dust cover top, sealed enclose keep off the bottom be fixed with the slide of slot adaptation, the slide peg graft in the slot, just the slide with buffer spring has set firmly between the slot diapire, sealed enclose keep off the top cover and have sealed the pad.

The utility model discloses an in one embodiment, the slip table bottom still is equipped with the slider, the slider includes sliding sleeve and fixed slide bar, fixed slide bar fixed connection in the dust cover inner wall, just fixed slide bar parallel arrangement is under first lead screw, sliding sleeve top fixed connection in the slip table bottom is close to the one end of first motor, the sliding sleeve slip cup joint in fixed slide bar.

The utility model discloses an in one embodiment, first motor pass through motor cabinet fixed connection in the slip table top, the air distribution pipe both ends are fixed in respectively the motor cabinet with the support, the length dimension of air distribution pipe is greater than clean round brush axial length dimension.

The utility model discloses an in one embodiment, bottom plate top one end is fixed with the pushing hands, the walking wheel is all fixed in through the shock attenuation landing leg the bottom plate.

In an embodiment of the present invention, two sets of filter plates are fixed in the dust collection box, and two sets of filter plates are all obliquely arranged on one side of the bottom end of the dust collection hose extending to the dust collection box.

The utility model has the advantages that: the utility model discloses a central air conditioning clean maintenance device that obtains through above-mentioned design, when using, the walking wheel removes central air conditioning clean maintenance device to need clean maintenance's central air conditioning indoor set under, drive the dust cover through the lift driving piece and move up, make sealed enclosure cover at indoor set air outlet or return air inlet, prevent effectively that the dust from wafting out through the gap between dust cover and the furred ceiling during cleaning, pollute the indoor environment, start first motor, first motor drive clean round brush rotates, start the second motor simultaneously, the second motor drives the slip table horizontal back-and-forth movement through first lead screw, thereby drive first motor and clean round brush back-and-forth movement on it, paste and roll through clean round brush and clean a large amount of dust that adheres to on the filter screen, the dust that clears out falls into the dust cover bottom, start the dust absorption fan, the dust that will fall into the dust cover bottom is absorbed through the dust absorption hose and is filtered and is piled up in the dust collection box, the utility model discloses can clean the maintenance to air outlet or the return air inlet of central air conditioning indoor set fast conveniently, clean effectual, and cleaning the in-process, can collect the dust, avoid the dust to fly upward effectively, pollute the indoor environment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a central air conditioner cleaning and maintenance device provided by an embodiment of the present invention;

FIG. 2 is a schematic view of a lifting dust-collecting mechanism according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a lifting driving member according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a cleaning mechanism according to an embodiment of the present invention;

fig. 5 is an enlarged schematic structural diagram of a portion a in fig. 4 according to an embodiment of the present invention;

fig. 6 is a schematic partial structure view of a second viewing angle of the cleaning mechanism according to the embodiment of the present invention;

fig. 7 is a schematic view of a partial structure of a cleaning mechanism at a third viewing angle according to an embodiment of the present invention.

In the figure: 10-lifting dust-collecting mechanism; 110-a base plate; 120-road wheels; 121-shock absorbing legs; 130-a support base; 140-pushing hands; 150-dust absorption fan; 160-dust box; 161-filter plate; 170-dust suction hose; 180-lifting drive member; 181-a third motor; 182-a transmission case; 183-a transmission member; 1831-first belt pulley; 1832-belt; 1833-second reel; 184-a second screw rod; 185-thread bush; 1851-positioning the slide block; 186-support frame; 1861-positioning the concrete chute; 187-a connecting block; 20-a cleaning mechanism; 210-a dust cover; 211-a mounting frame; 212-a slot; 220-sealing enclosure; 221-a buffer spring; 222-a slide plate; 223-a gasket; 230-a first lead screw; 240-a first motor; 241-motor base; 250-cleaning a rolling brush; 260-a second motor; 270-a sliding table; 271-support; 280-a slide; 281-a sliding sleeve; 282-a fixed slide bar; 290-a purge assembly; 291-an exhaust fan; 292-a wind hose; 293-air distribution pipe; 294-nozzle.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1-7, the present invention provides a technical solution: a central air conditioner cleaning and maintaining device comprises a lifting dust suction mechanism 10 and a cleaning mechanism 20.

Referring to fig. 2, the lifting dust-collecting mechanism 10 includes a bottom plate 110, a supporting base 130, a dust-collecting fan 150, a dust-collecting box 160 and a lifting driving member 180, walking wheels 120 are installed at four corners of the bottom plate 110, the walking wheels 120 facilitate moving the device to an indoor unit of a central air conditioner needing cleaning and maintenance, the walking wheels 120 are all fixed on the bottom plate 110 through shock-absorbing legs 121, the shock-absorbing legs 121 can reduce vibration caused by the lifting dust-collecting mechanism 10 during moving, thereby effectively preventing the cleaning and maintenance device from turning over, a pushing handle 140 is fixed at one end of the top of the bottom plate 110, thereby facilitating movement of the pushing device by a worker, the supporting base 130 is fixedly connected to the top of the bottom plate 110, the supporting base 130 and the bottom plate 110 are fixed by welding or bolts, the supporting base 130 is hollow, the dust-collecting fan 150 and the dust-collecting box 160 are all installed in the supporting base 130, the dust-collecting fan 150 is communicated with one side of the dust-collecting box 160 through a connecting pipe, dust collection box 160 internal fixation has two sets of filter 161, two sets of filter 161 all inclines to set up in bottom one side that dust collection hose 170 extends to dust collection box 160, through such setting, dust collection hose 170 carries the air that contains the dust in the entering dust collection box 160 to filter through two sets of filters 161 in proper order, the dust that filters out on the filter 161 breaks away from the filter 161 because of the action of gravity and piles up the bottom in dust collection box 160, only need clean maintenance back open dust collection box 160 clear up can.

Referring to fig. 3, the lifting driving member 180 is fixed on the top of the supporting seat 130, and when the lifting driving member 180 is specifically arranged, the lifting driving member 180 includes a third motor 181, a transmission box 182, a second screw rod 184 and a supporting frame 186, the transmission box 182 is fixedly connected to the top of the supporting seat 130, the transmission box 182 and the supporting seat 130 are fixed by welding or screwing, an access opening is formed in the side surface of the transmission box 182, the third motor 181 is installed at the bottom of the transmission box 182, the supporting frame 186 is fixedly connected to the top of the transmission box 182, the supporting frame 186 is formed by welding two sets of C-shaped lifting frames which are arranged oppositely, the second screw rods 184 are vertically and symmetrically arranged, the two second screw rods 184 are both rotatably connected to the two opposite sides of the supporting frame 186, the bottom ends of the second screw rods 184 extend into the transmission box 182 through the bottom wall of the supporting frame 186, the third motor 181 is connected to the bottom ends of the second screw rods 184 through a transmission member 183, the third motor 181 and the two second screw rods 184 are respectively in transmission connection through two transmission members 183 which are identical, can guarantee that two second lead screws 184 keep synchronous and rotate with fast, thereby guarantee the equilibrium that clearance mechanism 20 reciprocated, it is concrete, driving medium 183 includes first belt pulley 1831, belt 1832 and second belt pulley 1833, the third motor 181 output is located to first belt pulley 1831 cover, second belt pulley 184 bottom is located to first belt pulley 1831 second belt pulley 1833 cover, belt 1832 transmission is connected between first belt pulley 1831 and second belt pulley 1833, it has two thread bushings 185 all to separate the spiro union on every second lead screw 184, one side that thread bushing 185 is close to the support frame 186 inside wall is provided with location slider 1851, the location spout 1861 with location slider 1851 adaptation is seted up to the support frame 186 inside wall, play limiting displacement to thread bushing 185, make it can only reciprocate.

Referring to fig. 4-7, the cleaning mechanism 20 includes a dust cover 210, a sealing enclosure 220, a first lead screw 230, a first motor 240, a cleaning roller brush 250 and a second motor 260, the dust cover 210 is in an open funnel shape, an opening at the top of the dust cover 210 is larger than the size of the indoor unit, so that the indoor unit can be completely covered on the dust cover 210 for cleaning, and pollution caused by dust flying during cleaning can be avoided, the bottom end of the dust cover 210 is communicated with the top of the dust box 160 through a dust-collecting hose 170, the length of the dust-collecting hose 170 is larger than the lifting height difference of the lifting driving member 180, specifically, the threaded sleeves 185 are fixedly connected to the mounting frame 211 through the mounting frame 211, the dust cover 210 is fixedly connected to the lifting driving member 180 through the mounting frame 211, the dust cover 210 is fixedly clamped in the mounting frame 211, both sides of the mounting frame 211 are fixedly connected to the connecting block 187 through bolts or welding, the sealing enclosure 220 is slidably inserted around the top of the dust cover 210, the slot 212 is arranged in the top end of the dust cover 210, the bottom of the sealing enclosure 220 is fixed with the sliding plate 222 matched with the slot 212, the sliding plate 222 is inserted into the slot 212, the buffer spring 221 is fixedly arranged between the bottom walls of the sliding plate 222 and the slot 212, the top of the sealing enclosure 220 is covered with the sealing gasket 223, the sliding plate 222 is matched with the buffer spring 221 through the slot 212, the dust cover 210 is buffered, hard collision between the dust cover 210 and a suspended ceiling around an indoor unit is avoided, the sealing enclosure 220 and the sealing gasket 223 are used for effectively preventing dust from flying out through gaps between the dust cover 210 and the suspended ceiling during cleaning, and indoor environment is polluted.

In this embodiment, the first screw 230 is transversely rotatably connected to the top of the dust cover 210 near the opening, the second motor 260 is installed on the outer sidewall of the dust cover 210, the output end of the second motor 260 penetrates through the dust cover 210 and is connected to one end of the first screw 230 in an end transmission manner, the output end of the second motor 260 is fixed to the first screw 230 through a coupling, the first screw 230 is horizontally and vertically screwed with a sliding table 270, one end of the sliding table 270 is screwed on the first screw 230, the sliding table 270 is perpendicular to the first screw 230, one end of the sliding table 270, which is far away from the first screw 230, is slidably connected to the inner wall of the dust cover 210 through a support 271, the bottom end of the support 271 is fixedly connected to the sliding table 270, one side of the support 271 is slidably inserted into the inner sidewall of the dust cover 210, the first motor 240 is installed at one end of the top of the sliding table 270, specifically, the first motor 240 is fixedly connected to the top of the sliding table 270 through a motor base 241, the output end of the first motor 240 is connected to one end of the cleaning roller brush 250 in a transmission manner, the other end of the cleaning rolling brush 250 is rotatably connected to the support 271, the cleaning rolling brush 250 is kept horizontal, the cleaning rolling brush 250 is externally detachably wrapped and provided with a brush, so as to be convenient for quick cleaning or replacement, and the cleaning rolling brush is used for rolling and cleaning a large amount of dust attached to a filter screen at an air outlet or an air return port of an indoor unit, the sliding table 270 is further provided with a sliding part 280 at the bottom, the sliding part 280 comprises a sliding sleeve 281 and a fixed sliding rod 282, the fixed sliding rod 282 is fixedly connected to the inner wall of the dust cover 210, the fixed sliding rod 282 is arranged under the first screw rod 230 in parallel, the top of the sliding sleeve 281 is fixedly connected to one end, close to the first motor 240, of the sliding table 270, the sliding sleeve 281 is slidably sleeved on the fixed sliding rod 282, and through the arrangement of the sliding sleeve 281 and the fixed sliding rod 282, the sliding table 270 can only move back and forth on the first screw rod 230 without rotating along with the sliding sleeve, and has a limiting effect.

In this embodiment, the cleaning mechanism 20 further includes a purging assembly 290, the purging assembly 290 includes an exhaust fan 291, an air delivery hose 292, an air distribution pipe 293 and a nozzle 294, the exhaust fan 291 is installed on the mounting frame 211, a dust screen is installed at an input end of the exhaust fan 291 to filter air sucked by the exhaust fan 291 to prevent secondary pollution, one end of the air delivery hose 292 is connected to an output end of the exhaust fan 291, the length of the air delivery hose 292 is greater than that of the first lead screw 230 and redundancy is left, the two air distribution pipes 293 are symmetrically installed, the two air distribution pipes 293 are respectively installed at two sides of the cleaning roller brush 250 in parallel, two ends of the air distribution pipe 293 are respectively fixed to the motor base 241 and the support 271, the length of the air distribution pipe 293 is greater than the axial length of the cleaning roller brush 250 to perform full-face-blow back-washing on the filter screen at the air outlet or the air return air inlet of the indoor unit without leaving dead corners, the other end of the air delivery hose 292 is connected to the two air distribution pipes 293 through a tee joint, the nozzles 294 are arranged at intervals at equal intervals, the nozzles 294 are all communicated with the tops of the two air distribution pipes 293, the air outlets of the nozzles 294 are flared, the purging area is enlarged, and the air outlets of the nozzles 294 are arranged vertically upwards.

Specifically, the working principle of the central air conditioner cleaning and maintaining device is as follows: when the device is used, the central air-conditioning cleaning and maintenance device is moved to the position right below the central air-conditioning indoor unit needing cleaning and maintenance through the push handle 140 and the traveling wheels 120, the third motor 181 is started, the two second screw rods 184 are driven to synchronously rotate at the same speed through the transmission piece 183 to drive the threaded sleeve 185 to move upwards, the dustproof cover 210 is driven to move upwards through the connecting block 187 and the mounting rack 211, the sealing enclosure 220 is sleeved at the air outlet or the air return port of the indoor unit, the dustproof cover 210 is buffered through the matching of the slot 212, the sliding plate 222 and the buffer spring 221, hard collision between the dustproof cover 210 and a ceiling around the indoor unit is avoided, the sealing enclosure 220 can be in sealing and abutting connection with the ceiling around the indoor unit through the sealing enclosure 220 and the sealing gasket 223, dust is effectively prevented from flying out through a gap between the dustproof cover 210 and the ceiling during cleaning, the indoor environment is polluted, the first motor 240 is started, the cleaning roller brush 250 is driven to rotate by the first motor 240, meanwhile, the second motor 260 is started, the second motor 260 drives the sliding table 270 to horizontally move back and forth through the first screw 230, so as to drive the first motor 240 and the cleaning roller brush 250 thereon to move back and forth, a large amount of dust attached to the filter screen is attached and rolled and cleaned through the cleaning roller brush 250, the mesh holes rolled and cleaned through the cleaning roller brush 250 are subjected to full-scale blowing and back flushing through the blowing component 290, the cleaned dust falls into the bottom end of the dust cover 210, the dust collection fan 150 is started, the dust falling into the bottom end of the dust cover 210 is sucked through the dust collection hose 170, enters the dust collection box 160 to be filtered and accumulated in the dust collection box 160, and the dust collection box 160 is opened for cleaning after cleaning and maintenance.

It should be noted that the specific model specifications of the dust suction fan 150, the third motor 181, the first motor 240, the second motor 260 and the suction fan 291 need to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art in the field, so detailed burdens are not needed.

The power supply and the principle of the suction fan 150, the third motor 181, the first motor 240, the second motor 260 and the suction fan 291 are apparent to those skilled in the art and will not be described in detail herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cleaning and maintaining device for a central air conditioner is characterized by comprising

The dust collection device comprises a lifting dust collection mechanism (10), wherein the lifting dust collection mechanism (10) comprises a bottom plate (110), a supporting seat (130), a dust collection fan (150), a dust collection box (160) and a lifting driving piece (180), walking wheels (120) are installed at four corners of the bottom plate (110), the supporting seat (130) is fixedly connected to the top of the bottom plate (110), the dust collection fan (150) and the dust collection box (160) are installed in the supporting seat (130), the dust collection fan (150) is communicated with one side of the dust collection box (160), and the lifting driving piece (180) is fixed to the top of the supporting seat (130);

the cleaning mechanism (20), the cleaning mechanism (20) comprises a dust cover (210), a sealing enclosure (220), a first screw rod (230), a first motor (240), a cleaning rolling brush (250) and a second motor (260), the dust cover (210) is in an open funnel shape, the bottom end of the dust cover (210) is communicated with the top of the dust collection box (160) through a dust collection hose (170), the dust cover (210) is fixedly connected in the lifting driving piece (180) through a mounting frame (211), the sealing enclosure (220) is slidably inserted around the top of the dust cover (210), the first screw rod (230) is transversely and rotatably connected to the top of the dust cover (210) close to an opening, the second motor (260) is mounted on the outer side wall of the dust cover (210), the output end of the second motor (260) penetrates through the dust cover (210) and is in end transmission connection with one end of the first screw rod (230), first lead screw (230) are improved level and are connect slip table (270) perpendicularly, slip table (270) are kept away from the one end of first lead screw (230) pass through support (271) sliding connection in dust cover (210) inner wall, first motor (240) install in slip table (270) top one end, first motor (240) output transmission connect in clean round brush (250) one end, clean round brush (250) other end rotate connect in support (271).

2. The central air-conditioning cleaning and maintaining device according to claim 1, wherein the cleaning mechanism (20) further comprises a blowing component (290), the blowing component (290) comprises a suction fan (291), two air delivery hoses (292), two air distribution pipes (293) and nozzles (294), the suction fan (291) is installed on the mounting frame (211), one end of each air delivery hose (292) is communicated with the output end of the suction fan (291), the two air distribution pipes (293) are symmetrically arranged, the two air distribution pipes (293) are respectively arranged on two sides of the cleaning roller brush (250) in parallel, the other end of each air delivery hose (292) is communicated with the two air distribution pipes (293) through a tee joint, the nozzles (294) are arranged in a plurality of equal intervals, the nozzles (294) are respectively communicated with the tops of the two air distribution pipes (293), and the air outlet of the nozzle (294) is horn-shaped, and the air outlet of the nozzle (294) is vertically arranged upwards.

3. The central air-conditioning cleaning and maintaining device as claimed in claim 1, wherein the lifting driving member (180) comprises a third motor (181), a transmission box (182), a second lead screw (184) and a support frame (186), the transmission box (182) is fixedly connected to the top of the support base (130), the third motor (181) is installed at the bottom of the transmission box (182), the support frame (186) is fixedly connected to the top of the transmission box (182), the second lead screws (184) are vertically and symmetrically arranged, the two second lead screws (184) are rotatably connected to two opposite sides of the support frame (186), the bottom end of the second lead screw (184) extends into the transmission box (182) through the bottom wall of the support frame (186), and the third motor (181) is drivingly connected to the bottom end of the second lead screw (184) through a transmission member (183), two thread sleeves (185) are screwed on each second screw rod (184) at intervals.

4. The central air-conditioning cleaning and maintaining device as claimed in claim 3, wherein the threaded sleeves (185) are fixedly connected to the mounting frame (211) through a connecting block (187), a positioning slider (1851) is arranged on one side of the threaded sleeves (185) close to the inner side wall of the supporting frame (186), and a positioning chute (1861) matched with the positioning slider (1851) is formed on the inner side wall of the supporting frame (186).

5. The central air-conditioning cleaning and maintaining device as claimed in claim 3, wherein the transmission member (183) comprises a first belt pulley (1831), a belt (1832) and a second belt pulley (1833), the first belt pulley (1831) is sleeved on the output end of the third motor (181), the second belt pulley (1833) is sleeved on the bottom end of the second screw rod (184), and the belt (1832) is drivingly connected between the first belt pulley (1831) and the second belt pulley (1833).

6. The central air conditioning cleaning and maintaining device according to claim 1, wherein a slot (212) is formed in the top end of the dust cover (210), a sliding plate (222) adapted to the slot (212) is fixed at the bottom of the sealing enclosure (220), the sliding plate (222) is inserted into the slot (212), a buffer spring (221) is fixedly arranged between the sliding plate (222) and the bottom wall of the slot (212), and a sealing gasket (223) covers the top of the sealing enclosure (220).

7. The central air-conditioning cleaning and maintaining device as claimed in claim 1, wherein a sliding member (280) is further disposed at the bottom of the sliding table (270), the sliding member (280) includes a sliding sleeve (281) and a fixed sliding rod (282), the fixed sliding rod (282) is fixedly connected to the inner wall of the dust cover (210), the fixed sliding rod (282) is disposed in parallel under the first screw rod (230), the top of the sliding sleeve (281) is fixedly connected to one end of the bottom of the sliding table (270) close to the first motor (240), and the sliding sleeve (281) is slidably sleeved on the fixed sliding rod (282).

8. The central air-conditioning cleaning and maintaining device as claimed in claim 2, wherein the first motor (240) is fixedly connected to the top of the sliding table (270) through a motor base (241), two ends of the air distribution pipe (293) are respectively fixed to the motor base (241) and the support (271), and the length of the air distribution pipe (293) is greater than the axial length of the cleaning roller brush (250).

9. The central air-conditioning cleaning and maintaining device as claimed in claim 1, characterized in that a pushing handle (140) is fixed at one end of the top of the bottom plate (110), and the walking wheels (120) are all fixed on the bottom plate (110) through shock-absorbing legs (121).

10. A central air-conditioning cleaning and maintenance device according to claim 1, characterized in that two sets of filter plates (161) are fixed in the dust collection box (160), and the two sets of filter plates (161) are obliquely arranged on the bottom end side of the dust collection hose (170) extending into the dust collection box (160).