212results about How to "Improve brushing effect" patented technology

A disposable toothbrush 1 includes a handle portion 2; a head portion 10 connected with the handle portion 2 and provided with a plurality of elastomeric bristles 10a at least at the central area of the front surface part; and a fabric medium 20 attached to the front surface part of the head portion 10 while exposing the upper end of the elastomeric bristles 10a, and made of a microfiber material provided with at least one kind of a rapidly releasable agent 21. In the toothbrush, the rapidly releasable agent can be stably attached to the fabric medium, and in use, the rapidly releasable agent can be easily separated from the fabric medium, so that the rapidly releasable agent separated from the fabric medium can be easily dissolved to increase the tooth brushing effects.

The invention discloses a polymer emulsion interface agent for base layer coating treatment and a preparation method thereof. The polymer emulsion interface agent for base layer coating treatment comprises a component A and a component B. In use, the component A and the component B are mixed according to a weight ratio of 1: 1. The mixture of the component A and the component B is white paint. The component A comprises 0.1 to 0.5% of hydroxyethylcellulose, 0.2 to 0.9% of a dispersing wetting agent, 12 to 19% of quartz powder, 48 to 65% of styrene-acrylic acid ester polymer emulsion, 0.05 to 0.35% of an antiseptic, 0.01 to 0.2% of a mildew inhibitor, 0.05 to 0.25% of a multifunctional auxiliary agent, 0.05 to 0.55% of a thickening agent, 0.1 to 0.5% of an antifoaming agent, 0.2 to 0.7% of a film forming auxiliary agent and 18 to 35% of water. The component B comprises 20 to 38% of wollastonite powder, 15 to 35% of quartz powder and 38 to 55% of quartz sand. Through combining the component A and the component B according to a ratio, the polymer emulsion interface agent for base layer coating treatment has the characteristics of good cohesion and adhesion, high bonding intensity, good closeness, rough surface layer and good adhesiveness with putty.

The invention discloses a high voltage line insulator automatic cleaning tool, and mainly relates to the technical filed of insulator cleaning. The cleaning tool includes a frame body, the frame body is provided with opposite arc guide rails, the inner sides of the arc guide rails are connected with an arc carriage, the two ends of the arc carriage are limited against the far-away ends of the arc guide rails, the two ends of the inner side of the arc carriage are hinged with support rods, the torsion springs are arranged at the roots of the support rods to open the support rods, a strip is connected between the support rods, and brushhair is arranged on the strip. The cleaning tool rapidly and conveniently sleeve the insulator without influencing the connection parts of the two ends of the insulator, can better adapt to the fluctuating of the umbrella skirt, and comprehensively and completely clean the circumference, head and tail of the insulator.

The invention discloses an automatic brush plate machine of a zinc electrolysis cathode plate, comprising an intaking-plate distance-arranging device (1) and a chain transmission device (2) which are sequentially arranged, a roller brush-plate device (3) and an unloading plate release device (4) which are sequentially arranged along a transmission chain (2d) of the chain transmission device (2), wherein, the roller brush-plate device (3) is located above the chain transmission device (2). The invention can continuously clean a plurality of cathode plates, and has advantages of simple operation, high brush-plate efficiency, and reliable working.

The present invention provides a teeth brushing analysis method and device, and a teeth brushing system, and relates to the field of intelligent teeth brushing technology. The method is executed by auser terminal, and the user terminal is in communication connection with an intelligent toothbrush. The method comprises the steps of: when it is monitored that a user starts an intelligent toothbrush, identifying user's identity information; determining a teeth brushing standard corresponding to the identity information; extracting user's teeth brushing feature information by employing the intelligent toothbrush, wherein teeth brushing feature information comprises one or more than one of teeth brushing efficiency, teeth brushing effective duration corresponding to each teeth brushing area, motion frequency corresponding to each teeth brushing area, a teeth brushing motion track, a teeth brushing angle track and a teeth brushing acceleration track; and generating a user's teeth brushing analysis report according to the user's teeth brushing feature information and the teeth brushing standard corresponding to the identity information. The teeth brushing analysis method and device, andteeth brushing system can allow users to clearly understand teeth brushing behaviors of the users themselves, are helpful for the users to standardize the teeth brushing behaviors and can improve theteeth brushing effect.

The invention discloses alcohol-group dry powder sand mould foundry coating, which comprises the following components in percentage by weight: 60-75% of bauxite, 2-10% of amorphous graphite, 3-15% of lamellar graphite, 2-10% of iron oxide red, 1-5% of attapulgite, 0.5-1.5% of sodium bentonite, 1-5% of polyvinyl butyral, 0.1-0.5% of surfactant and 0.1-0.5% of dispersing agent. The dry powder coating has the advantages of simple preparation technology, convenience in use and good high-temperature sand adhesiveness resistance.

The invention relates to water-based environment-friendly acrylic ester paint with low smell and formaldehyde decomposition performance. The paint is prepared from the concrete ingredients: 50 to 80 weight parts of acrylate monomers, 10 to 15 weight parts of solubilization monomers, 20 to 25 weight parts of oligomers, 8 to 18 weight parts of toughened resin, 3 to 8 weight parts of odor adsorbents, 2 to 5 weight parts of formaldehyde treatment agents, 1 to 3 weight parts of sterilization compounds, 3 to 8 weight parts of initiators, 2 to 8 weight parts of triethylene tetramine and 100 to 500 weight parts of water. The monomers are subjected through free radical polymerization, uniform mixing and defoaming, and high-energy ionizing rays are used for 10s. Various measures (later-stage high-energy ray radiation, gas adsorbents and formaldehyde processing agents are matched to be used, and the like); finally, the obtained acrylic ester paint has the advantages of low smell, formaldehyde adsorbing and decomposing performance, low monomer residue and the like, and can well meet the requirements of indoor ornamentation and decoration on paint environment-friendly performance.

The invention discloses an alcohol-based casting coating for lost foam casting. The alcohol-based casting coating is characterized by being composed of, by weight, four parts to seven parts of silicon metal powder, 55 parts to 70 parts of zirconium mullite, 30 parts to 40 parts of iron-ore slag, 25 parts to 35 parts of ferrovanadium slag, 0.4 part to 0.8 part of tungsten disulfide, 0.5 part to 0.7 part of zirconium phosphate, 0.3 part to 0.6 part of nanocrystalline cuprous oxide, 1 part to 2 parts of attapulgite, 6 parts to 10 parts of peat, 2 parts to 4 parts of pine needle oil, 6 parts to 9 parts of polyvinyl alcohol carboxy butyl aldehyde, 50 parts to 60 parts of ethyl alcohol and 3 parts to 6 parts of auxiliaries. The coating manufactured through the method has the excellent thermal insulation property and good suspension property and abrasive resistance. The coating further has the good ventilation property and comparatively high surface strength and brushing property. The defects that in an existing casting coating preparative technique, refractory powder is expensive, and the production cost of the coating is comparatively high are overcome. The coating manufactured through the method has super quality and competitive price and is simple in production technique.

The invention relates to the field of cleaning equipment, in particular to a vegetable cleaning device. The vegetable cleaning device comprises first cleaning brushes, second cleaning brushes, high-pressure sprayers, a motor, a sink and a conveying belt. Each first cleaning brush comprises a fixed frame, a telescopic shaft and a disc brush, wherein the fixed frame is fixedly mounted at the top of the vegetable cleaning device, one end of the telescopic shaft is fixedly mounted on the fixed frame, and the disc brush is connected to the other end of the telescopic shaft. Each second cleaning brush comprises a sleeve, a rotating shaft and brush bristles, wherein the rotating shaft, with one end being fixedly connected with the side face of the vegetable cleaning device, is arranged in the sleeve, the other end of the rotating shaft is connected with the motor, and the brush bristles are arranged on the sleeve spirally. Each high-pressure sprayer is fixedly mounted above the corresponding second cleaning brush, and the motor is connected with the conveying belt. The vegetable cleaning device has the advantages that contact area between vegetables and brush rollers is increased, so that working efficiency is improved and labor intensity is lowered.

The invention relates to an automatic brushing device for a tree heat-retention coating, and relates to the field of gardens. The automatic brushing device for the tree heat-retention coating comprises a movable base assembly, a rotating seat assembly, a reciprocating brush-coating assembly, a diameter adjusting assembly and brush roller assemblies. The automatic brushing device for the tree heat-retention coating has the beneficial technical effects that limewater can be automatically brushed, and a brushing effect is uniform; the automatic brushing device for the tree heat-retention coatingis suitable for trees in different sizes; the pressure between a coating roller and a tree is adjustable, so that a coating effect is improved favorably; and different positions of the tree can be brushed and can be further brushed for multiple times in a reciprocating way, so that the brushing thickness is ensured to achieve the effects on heat retention and insect prevention. The rotating seat assembly is connected onto the movable base assembly in a sliding fit way; the reciprocating brush-coating assembly is fixedly connected onto the rotating seat assembly; the diameter adjusting assemblyis connected onto the reciprocating brush-coating assembly in a sliding fit way and is connected onto the reciprocating brush-coating assembly in a screw-thread fit way; and the two brush roller assemblies are symmetrically arranged at two ends of the diameter adjusting assembly.

In a 360-degree toothbrush in which a brush head is formed by superposing disk-shaped radial vanes 1 in an axial direction, the arranging pitch of the radial vanes 1 is increased so as to make the bristle density appropriate. Spacers are not used between the radial vanes 1 so as to increase the productivity, and to improve the hygiene condition. In order to realize these aspects, an annular protrusion or protrusions 3 are formed on one or both of the surfaces of an annular weld portion 2 of the radial vane 1. The annular protrusion 3 is formed at the same time when forming the weld portion 2 in a welding step in which the bristle bundle is opened radially and the center part is welded so that the radial vane 1 is manufactured.

On a tip of a main body case is formed a cylindrical brush attachment shaft tube to which a toothbrush head (holding unit) is removably attached. In a space within the cylindrical brush attachment shaft tube is disposed a motor to which an eccentric weight generating vibration is attached. Therefore, it is possible for the tip of the toothbrush head to approach the main body case side by the length of the cylindrical brush attachment shaft tube, thereby shortening the total length of an electric toothbrush.

The invention discloses anti-corrosion polyurethane-epoxy resin composite emulsion coating, which is prepared from the following raw materials: polyurethane-epoxy resin composite emulsion, fluorocarbon resin emulsion, polytetrafluoroethylene emulsion, polyphenylene sulfide resin, tetrafluoroethylene-hexafluoropropylene copolymer, nano-silicon sol, nano-zinc oxide, zinc phosphate, iron-titanium compound powder, nanometer titania, hexahydro-1,3,5-tri(ethoxy)-s-triazine, water-borne polyaniline, carbon nano tube, hollow microspheres, nanometer aluminum nitride, organic-modified montmorillonite, iron oxide yellow, gamma-isocyanate-triethoxypropylsilane, hydrogenated castor oil, defoamer, cosolvent, alcohol ester-12 and deionized water. The anti-corrosion polyurethane-epoxy resin composite emulsion coating disclosed by the invention has good water tolerance and weather fastness and excellent corrosion resistance and impact resistance and is long in service life.

The invention discloses a high-strength polyurethane waterproofing paint which is prepared from the following raw materials in parts by weight: 50-55 parts of high-strength hydrophobically polyurethane, 26-29 parts of short oil alkyd resin, 7-10 parts of potassium tripolyphosphate, 3-5 parts of zinc stearate, 0.5-0.8 part of calcium lignosulphonate, 5-8 parts of bentonite, 3-6 parts of light calcium carbonate, 2-5 parts of talcum powder, 4-6 parts of butyl acetate, 1-3 parts of cyclohexanone, 0.1-0.4 part of an antifoaming agent, 0.2-0.5 part of a flatting agent and 0.3-0.6 part of a dispersing agent. The high-strength polyurethane waterproofing paint is high in strength and good in adhesive force, and has excellent water-resistance ability.

The invention discloses a clingy tree trunk whitewashing device easy for adjustment. The clingy tree trunk whitewashing device easy for adjustment comprises a sliding seat, racks, a painting roller, aright chuck and a left chuck, wherein two second sliding chutes which are the same are symmetrically formed in the upper side and the lower side of the left chuck and the right chuck; telescopic rodsare fixedly arranged at the bottom of the sliding seat, the two racks are respectively fixed at the telescopic ends of the two telescopic rods, a screw is rotatably arranged at the inner side of eachrack, each screw is connected with a thread sleeve by virtue of a screw thread, the inner side of each thread sleeve is slidably connected with the corresponding rack; and a first sliding chute is formed in the outer side of each thread sleeve, and the painting roller is rotatably arranged on a sliding rod. The clingy tree trunk whitewashing device disclosed by the invention has the advantages that the left chuck and the right chuck which are clamped and connected with an upright rod are arranged, the sliding seat is slidably arranged on the second sliding chutes formed in the left chuck andthe right chuck, the painting roller is driven to rotate by virtue of the sliding seat, and the painting roller is driven to move up and down by utilizing the screws and the thread sleeves, so that circulating reciprocating painting is carried out on one end region of a tree trunk.

In a 360-degree toothbrush in which a brush head is formed by superposing disk-shaped radial vanes 1 in an axial direction, the arranging pitch of the radial vanes 1 is increased so as to make the bristle density appropriate. Spacers are not used between the radial vanes 1 so as to increase the productivity, and to improve the hygiene condition. In order to realize these aspects, an annular protrusion or protrusions 3 are formed on one or both of the surfaces of an annular weld portion 2 of the radial vane 1. The annular protrusion 3 is formed at the same time when forming the weld portion 2 in a welding step in which the bristle bundle is opened radially and the center part is welded so that the radial vane 1 is manufactured.

The invention discloses an anti-corrosion coating brush printing device for an electronic chip, the anti-corrosion coating brush printing device comprises a device body, a crankshaft, a spraying box,a brush roller, a workbench and a gear; wherein a driving motor is arranged on the left side of the upper part of the device body, the driving motor is fixedly connected with a motor base, the lower portion of the driving motor is rotationally connected with the crankshaft, the crankshaft penetrates through the upper edge of the device body and is rotationally connected with a bearing, the spraying box is fixedly connected to the inner part of the upper portion of the device body, the crankshaft penetrates through the spraying box and is rotationally connected with the bearing, the bent part of the crankshaft is sleeved with one end of a connecting rod, the other end of the connecting rod is rotationally connected with a plunger, and the edge of the plunger is slidably connected with the inner wall of the spraying box in a sealing manner. The device achieves an automatic feeding function by use of the crankshaft to drive the plunger to move left and right, meanwhile, a semi-conical gear and a bevel gear drive a screw rod to do reciprocating forward and reverse rotation so as to drive a workbench to move left and right in a reciprocating manner, the gear and the brush roller are driven to rotate while the workbench moves left and right in the reciprocating manner, and the rotating brush roller is matched with the workbench which moves left and right in the reciprocating manner to carry out omni-directional brush coating on the chip.

The invention discloses an automatic board brushing method for charger PCBA boards. The automatic board brushing method includes the following steps that the PCBA boards which synchronously move along with an automatic conveying device and are not cleaned are stopped at an assigned position; the stopped PCBA boards are taken away from the automatic conveying device and are transferred to the position of a board brushing mechanism; and board brushing is conducted on the PCBA boards, the PCBA boards subjected to board brushing are put back on the automatic conveying device and are conveyed to the next procedure, and board brushing is further conducted through an automatic board brushing machine for the charger PCBA boards. The automatic board brushing machine for the charger PCBA boards comprises the automatic conveying device, a stop and release mechanism, a clamping and placing rotation mechanism, a board brushing mechanism and a support, wherein the automatic conveying device, the stop and release mechanism, the clamping and placing rotation mechanism, the board brushing mechanism and the support can work under coordination of a PLC control system. By means of the automatic board brushing method for the charger PCBA boards, the whole process can be automatic, and it is ensured that the board brushing quality is stable while the labor cost is reduced.

The invention discloses a wear-resistant flame retardation wallpaper raw paper. Present technologies and present formulas are improved, meerschaum powder-antimony oxide-chlorinated paraffin is adopted as a flame retardant and is modified, H. and OH. free radicals in the chain reaction and for keeping combustion in a paper combustion reaction gas phase are captured to change the reaction mode in the gas phase, the heat release amount of the reaction is reduced to quench flame, and nanometer calcium carbonate is added to raw materials after being organically modified to improve the brush ability of raw paper and make the raw paper be closely combined with a decoration layer and not shed. The flame retardation property of the flame retardation wallpaper raw paper meets GB / T14656-93 requirements, the tearability, the folding strength, the ring crush strength and the tensile strength are improved, and wallpaper produced by using the raw paper has the advantages of environmental protection, no pollution, wear resistance, difficult shedding, full utilization of the moisture absorption, ventilation, bacteriostasis, anti-bacterium, warmness in winter, coolness in summer and humidity adjustment characteristics of bamboo charcoal fibers to purify and adjust air, and avoiding of damages of harmful materials to the health of human bodies.

The invention discloses a nanometer self-cleaning out-wall latex paint and a preparing method thereof. The nanometer self-cleaning out-wall latex paint is prepared from, by weight, 140-180 parts of water, 10-30 parts of propylene glycol, 0.5-1.5 parts of wetting agent, 3-8 parts of dispersing agent, 1-3 parts of defoaming agent, 1-3 parts of preservative, 10-25 parts of film-coalescing aid, 10-50parts of nanometer titania, 180-240 parts of titanium dioxide, 80-150 parts of heavy coarse calcium carbonate, 40-60 parts of wollastonite powder, 40-60 parts of kaolin, 280-350 parts of pure acrylicemulsion, 80-120 parts of organosilicone modification acrylic emulsion, 2 parts of multifunctional auxiliaries, 2-4 parts of thickening agent and 1-2 parts of flattening agent. Compared with the priorart, the nanometer self-cleaning out-wall latex paint has the advantages of having excellent weather fastness, alkali resistance, and artificial weathering aging resistance, the problems that paint is poor in water resistance, prone to cracking, stripping, fines removal and color changing, and difficult to clean are solved, and the nanometer self-cleaning out-wall latex paint is suitable for being used in various occasions, and has high application and popularization value.

The invention discloses an omnibearing electric toothbrush which comprises a toothbrush handle, a toothbrush rod and a toothbrush head, wherein the toothbrush head consists of a left-rotating hairbrush and a right-rotating hairbrush, which are oppositely and fixedly arranged on a toothbrush shaft; the right end of the toothbrush shaft is arranged in a shaft hole arranged at the upper end of the toothbrush rod and is axially positioned on the shaft hole through the right-rotating hairbrush and a shaft cap arranged at the right end of the toothbrush shaft; a power source in the toothbrush handle is in driving connection with wheel teeth arranged at the right side of the right-rotating hairbrush through a driving shaft arranged in the toothbrush rod; the bristles of the left-rotating hairbrush and the right-rotating hairbrush consist of an inner ring of bristles and an outer ring of bristles; the gap a which is less than or equal to the thickness of the teeth is formed between the end head of a left outer-ring bristle and the end head of a right outer-ring bristle; the end head of the left inner-ring bristle and the end head of the right inner-ring bristle are overlapped with each other in a staggered way or a gap b which is less than gap a is formed between the end head of the left inner-ring bristle and the end head of the right inner-ring bristle; and the left inner-ring bristle, the right inner-ring bristle and the toothbrush shaft are in parallel with one another, or a smaller inclined angle m is formed between the left inner-ring bristle and the toothbrush shaft as well as the right inner-ring bristle and the toothbrush shaft, and a larger inclined angle n is formed between the left outer-ring bristle and the toothbrush shaft as well as the right outer-ring bristle and the toothbrush shaft. The invention provides the omnibearing electric toothbrush, which is simple in structure, small in volume, and convenient to move in mouth in the process of tooth brushing.

The invention relates to an edge-brushing device for a pole plate edge-brushing machine. The edge-brushing device comprises a machine frame and a movable seat movably connected to the machine frame. The movable seat is fixedly provided with an edge-brushing assembly and a power device controlling the edge-brushing assembly to work. The machine frame is provided with a drive device which drives the movable seat to do reciprocating motion along the center line of the machine frame. The edge-brushing device has the advantages that as the power device drives the edge-brushing assembly to brush the edges of pole plates and the drive device drives the edge-brushing assembly to do the reciprocating motion, reciprocating edge-brushing treatment can be carried out on the pole plates, the edge-brushing effect is improved, the amount of work is lowered, production efficiency is improved, and production cost is lowered.

The invention provides a five-in-one toothbrush. A hollow toothbrush handle (3) is provided with a cell (19), a motor (20), a replace core, a compression pocket (2), a metal sheet (18), a cushion (16) and a rubber plug (17). The toothbrush head section (4) is inside provided with a helical brush head (5), a magnetic sheet (6), a silica gel plug (8), a sealing gasket (11), a sound generator (21) and a metal transmission shaft (22).

The invention relates to a modified alcohol-base foundry coating which comprises the components in percent by weight: 75%-85% of zirconium silicate powder, 1%-2% of a gas-phase auxiliary agent, 2%-3% of polyvinyl butyral, 4%-6% of a suspending agent, 1%-2% of phenolic resin, and the balance additive, wherein the suspending agent is prepared by: uniformly mixing 40% by weight of a TM-MA composite agent and 10% by weight of alcohol, adding 50% by weight of attapulgite, putting in a supersonic generator, stirring and shaking for 1 h, standing for 30 min, and drying at 70 DEG C. According to the modified alcohol-base foundry coating provided by the invention, modified attapulgite is employed for preparation of the suspending agent, and does not form compact precipitation after placed for a relatively long time when the modified attapulgite is suspended in alcohol; and the addition of an anti-foaming agent helps to eliminate bubbles generated during stirring, so that the wettability of the alcohol-base coating is improved, the suspensibility, the thixotropy and the coating effect of the alcohol-base coating is substantially improved, and the coating layer is smooth, compact and high in bonding strength, and has no hardening.

The invention relates to the technical field of painting, particularly to a highly-adhesive elastic emulsion paint. The highly-adhesive elastic emulsion paint is composed of pure acrylic emulsion, styrene-acrylic emulsion, inorganic filler, compound thickening agent, polytetrafluoroethylene-polyurethane copolymer, polyacrylamide, nanometer titanium dioxide, preservative, defoamer, leveling agent and deionized water, wherein the compound thickening agent is a special combination prepared by compounding materials such as mucopolysaccharides, modified cellulose and modified starch; the organic filler is a mixture of titanium dioxide, talcum powder and light calcium carbonate; the preservative is 1, 2-benzisothiazolin-3-one, methylisothiazolinone or 5-chloro-2-methyl-4-isothiazolinone-3-one. The highly-adhesive elastic emulsion paint is high in adhesiveness and easy to dry and cure and can form coating high in elasticity, strength and washing resistance.

The invention discloses a coating capable of improving the thickness of a graphite layer on the inner surface of a precision casting. The coating comprises an organic solvent and a solute, wherein the organic solvent is ethyl alcohol, and the solute comprises 60-65 parts of bauxite, 3-6 parts of electrolytic cerium, 1-3 parts of sodium bentonite, 3-7 parts of graphite and 1-1.5 parts of a dispersing agent. The baume degree of the coating is 62-68. According to the invention, 200-300-mesh bauxite, graphite, sodium bentonite and electrolytic cerium are adopted, and the active electrolytic cerium is added in a refractory material, so that a matrix can have good high-temperature strength and stability. The electrolytic cerium can promote the ductile progress of high-nickel austenitic nodular cast iron and reduces the formation of layered graphite layers. The coating is simple in formula, practical, simple and convenient in preparation process and full in effect and is worthy of application and promotion.

The invention discloses a high-adhesive-force polyurethane building water-resistant paint which is prepared from the following raw materials in parts by weight: 48-54 parts of high-strength hydrophobic polyurethane, 35-38 parts of alkyd resin, 15-18 parts of filler, 1.5-1.8 parts of dibutyl phthalate, 0.2-0.5 part of adhesive force improver, 0.5-0.8 part of dispersing agent, 0.1-0.3 part of leveling agent, 0.2-0.4 part of defoaming agent, 5-8 parts of flame retardant and 15-20 parts of antioxidant. The high-adhesive-force polyurethane building water-resistant paint disclosed by the invention has the advantages of excellent water resistance and excellent adhesive force.

The invention discloses a water-free flying dust treatment device for constructional engineering, relates to the technical field of flying dust treatment devices, and aims to solve the problem of flying dust adhesion. The water-free flying dust treatment device specifically comprises a main body, wherein a first connecting pipe is welded on an outer wall of one side of the main body; an exhaust pump is fixed to an outer wall of one side of the first connecting pipe through a bolt; a fixed frame is welded on an inner wall of the top of the main body; an inner wall of the fixed frame is connected with a first rotating shaft through a bearing; fan blades which are uniformly distributed along the circumference are welded on an outer surface of one end of the first rotating shaft; a first gearis fixed to the other end of the first rotating shaft through a screw; an outer wall of the top of the main body is connected with a second rotating shaft through a bearing base; and a second gear isfixed to an outer surface of the second rotating shaft through a screw. Through the arrangement of the fan blades, the first gear, the second gear, a first brush head and a second brush head, the inner wall of the main body can be cleaned effectively with air current generated by the operation of the exhaust pump, so that the influence of long-time adsorption of the dust to the inner wall of the main body on the using effect is avoided.