44results about How to "Play the role of self-cleaning" patented technology

The invention provides a waste heat recovering device of high-temperature metallurgy slag particles. The device comprises a middle hopper, a boiler body, a steam pocket, a superheater, an evaporator, an economizer and a discharging machine, wherein the middle hopper is arranged above the material inlet of the boiler body; a refractory material is arranged in the boiler body and a rectangle cavityis formed; the boiler body is divided into a storage section and a work section from top to bottom; the superheater, the evaporator and the economizer are successively arranged in the work section from top to bottom and respectively consist of single or multiple heat exchange pipe groups; the two ends of each heat exchange pipe are respectively connected to a water inlet header and a water outletheader of each heat exchange pipe group; the water inlet header is connected with an distribution header through a distribution pipe; the water outlet header is connected with a converge header through a converge pipe; the steam pocket is connected with the water outlet header; the outlet end of the superheater is connected with a steam pipe network or steam turbine; and the discharging machine is installed at the outlet of the boiler. By using the waste heat recovering device, uniform heat exchange can be realized, the yield and the quality of the steam are improved, and the recovery efficiency of waste heat is high.

The invention provides an inner cleaning brush for a pipeline. The inner cleaning brush for the pipeline comprises an outer telescoping rod and a center motor, wherein a rotating motor is connected tothe right side of the outer telescoping rod through an inner telescoping rod; an airbag and a sponge brush are connected to the outer surface of the inner telescoping rod; an air blower is mounted inthe inner telescoping rod; the center motor is connected to the right side of the rotating motor through a rotating shaft; brush plates are movably connected to the side surfaces of the center motorthrough telescoping rods; and hairs are fixedly mounted on the outer surfaces of the brush plates. The inner cleaning brush for the pipeline overcomes the shortages in the prior art and are reasonablein design and compact in structure; the rotating motor drives the rotating shaft to rotate so as to drive the hairs to rotatably clean the inner part of the pipeline; a water tank is capable of spraying water to clean; and the air bag and the sponge brush are capable of wiping the inner part of the pipeline in the last.

The invention provides a preparation method of self-cleaning toughened glass. The preparation method comprises the following steps: spraying a nanometer self-cleaning coating on the surface of glass, wherein the nanometer self-cleaning coating comprises the following components: nanometer cobalt oxide, nanometer zirconium oxide, nanometer molybdenum trioxide, water glass, hollow glass microballoons, palygorskite powder, sepiolite powder and a solvent; then soaking the glass in an acid solution for acid treatment; and baking the glass at the temperature of 200-300 DEG C for 20-40 minutes, then carrying out toughening treatment at 600-680 DEG C for 6-10 minutes, and cooling to obtain the self-cleaning toughened glass. According to the preparation method, the nanometer cobalt oxide, the nanometer zirconium oxide, the nanometer molybdenum trioxide, the water glass, the hollow glass microballoons, the palygorskite powder and the sepiolite powder are taken as main components of the nanometer self-cleaning coating, not only is an self-cleaning effect achieved through the synergistic effect of the components, but also a crystal form is not transformed after high-temperature treatment, so that the prepared self-cleaning toughened glass has a good self-cleaning effect.

The invention relates to a connecting device for welding cables. The rapid connecting device is mainly applied to connection between welding cables and welding devices or applied to connection between welding cables. The anti-loosening type elastic rapid connecting device comprises a male plug and a female socket, wherein a movable clamping head under the action of a spring is arranged on the male plug. The male plug and the female socket are clamped when the clamping head which has spring tension and is arranged on the male plug is connected with and clamped on a clamping groove in the female socket in an elastic mode. Under the normal working condition, the clamping head of the male plug can not easily slip off the clamping groove which has the taper and is formed in the female socket, illusory connection or loosening can not occur even when the clamping head of the male plug slides due to a certain external cause, the old problem which has puzzled a user for a long time is solved on the promise that the traditional use method of the user does not need to be changed, the problems of universality, illusory connection and loosening are effectively solved, reliability and safety can be remarkably improved, and the technical defects are effectively overcome.

The invention relates to a water-sediment separation device, in particular to a water-sediment multistage filtration and separation device, which consists of a support, a tank body, a filter barrel, amotor, discharge pipes and collection barrels. The motor is disposed outside the tank body and is fixedly connected to the top of the tank body, a motor shaft is connected to a transmission shaft, the transmission shaft extends downward into the tank body, the filter barrel is vertically arranged in the tank body, the filter barrel is internally equipped with several filter groups, each filter group consists of a collection plate and a filter screen, the transmission shaft is fixedly connected to the filter screen, the lower surface of the filter screen is fixedly connected to a scraping plate, the upper end of the transmission shaft is fixedly connected to impellers, the filter barrel is equipped with discharge holes, the discharge holes are internally equipped with discharge valves, oneends of the discharge pipes are in fixed connection with the discharge holes, and the other ends pass through the tank body and extend out of the tank body, the collection barrels are disposed belowthe orifices of the discharge pipes, and different filter groups have different filter screen apertures. The device with the above structure can realize classification, separation and collection of sediment in water, and the same time also accelerate the filtration and separation rate.

The invention relates to a self-cleaning grinding and polishing tool, which relates to a grinding and polishing tool for self-cleaning overflow grinding and polishing liquid and grinding and polishing scraps through vacuum absorption while grinding and polishing a surface in the central liquid supplying process. The tool consists of a pressurization unit, a liquid supplying and cleaning unit and a grinding and polishing operation unit, wherein the pressurization unit is used for adjusting grinding and polishing pressure; the liquid supplying and cleaning unit is used for introducing grinding and polishing media and vacuumizing and absorbing the grinding and polishing media; and a grinding and polishing effect is achieved by the grinding and polishing operation unit. The grinding and polishing tool moves in a certain track under the control of a computer, so that a large plane can be totally flattened. The tool has the advantages that the grinding and polishing media are introduced into the center of a grinding and polishing head, so that the grinding and polishing media can be fully contacted with grinding and polishing materials, and the grinding and polishing quality and the grinding and polishing efficiency are improved; and by a vacuumized pore passage of an outer ring of the grinding and polishing tool, the grinding and polishing media which are subjected to a grinding and polishing process is sucked away in time, so that the ground and polished surface is prevented from being polluted, the effect of self-cleaning the surface of a workpiece in the grinding and polishing process is achieved, subsequent cleaning processes are eliminated, and processing efficiency is improved.

A manual-pneumatic bi-component spray gun comprises a gun head unit, a gun body, a cylinder barrel, a piston, a valve rod and a gun handle unit, and further comprises a valve rod pneumatic-control assembly and a valve rod manual-control assembly. The valve rod pneumatic-control assembly or the valve rod manual-control assembly is mounted on the cylinder barrel at the tail end of the valve rod through a component-positioning bolt, the front portion of the cylinder barrel is mounted on the gun body, the piston is fixedly mounted in the middle of the valve rod and further mounted in the cylinder barrel through a sealing element, the front end of the valve rod extends out of the gun body to be inserted into a mixing chamber of the gun head unit which is fixedly arranged at the front end of the gun body through a horizontal beam, and the gun handle unit is mounted on the lower portion of the gun body. Since the valve rod pneumatic-control assembly and the valve manual-control assembly are additionally arranged, the bi-component spray gun can be automatically controlled by compressed air or can be controlled manually, carrying a heavy air compressor at any time can be avoided, spraying surface area can be regulated, the mixing chamber can be cleaned automatically and remote control of a spraying machine can be performed; and the manual-pneumatic bi-component spray gun is simple in structure, and convenient to use.

The invention discloses an anti-corrosion and anti-blockage drainage pipe and a preparation method thereof. The anti-corrosion and anti-blockage drainage pipe drainage pipe comprises a plastic pipe, aself-cleaning layer and an anti-corrosion layer, wherein the anti-corrosion layer is uniformly sprayed on the inner wall of the plastic pipe, and the self-cleaning layer is uniformly sprayed on the surface of the anti-corrosion layer and comprises the following raw materials: nano-silver, glass powder, polystyrene and polydimethylsiloxane; the anti-corrosion layer comprises the following raw materials: polytetrafluoroethylene, carbon fiber, bisphenol A epoxy resin, additives, turpentine and a compatilizer. The pipe has the beneficial effects that a self-cleaning effect can be achieved, dirt in the pipe can be removed to achieve the effect of being in the silt but not imbrued, blockage of the drainage pipe is effectively prevented, and the pipe is provided with the anti-corrosion layer, sothat corrosion resistance and oxidation resistance of the pipe are increased, stability of the pipe is enhanced, and the service life of the pipe is prolonged.

The invention provides a novel glass powder sprayer which comprises a rack and further comprises a fluidization device, a vacuum generator and a powder distributor that are fixedly arranged on the rack, wherein the fluidization device comprises a fluidization powder storage box and a base arranged below the fluidization powder storage box; the base is internally provided with a fluidization compression pipeline; the fluidization compression pipeline is connected with an external compressed air pipeline; the fluidization compression pipeline is communicated with the fluidization powder storagebox; glass mold-proof partitioning powder is stored in the fluidization powder storage box; and a suction connector is arranged at the lower end of the vacuum generator and connected with a powder suction pipe in a sleeving manner. The invention further provides a working method of the novel glass powder sprayer, which particularly comprises the following steps: S1, opening a fluidization valve for fluidization treatment, and S2, turning on the vacuum generator, and conveying the fluidization powder storage box into the vacuum generator. The novel glass powder sprayer uniformly sprays atomizedpowder to the surface of glass through spray heads, is uniform in powder spraying, stable and reliable and reduces cost.

The invention relates to a device for detecting turbidity of a pipe network end. The device comprises a casing, a motor, a piston assembly, a cuvette, a turbidity measuring part and a bottom cover, wherein the upper portion of the cuvette is located in the casing, and the lower portion of the piston assembly is sleeved inside the cuvette. The turbidity measuring part is in sleeved connection with the outer side of the lower portion of the cuvette and is fixedly connected with the casing, an LED light source and at least two optical signal.

The invention provides a washing machine. The washing machine comprises a washing bucket, a water collecting cover and a filter device; an opening is formed in the bottom wall of the washing bucket, the water collecting cover covers the bottom wall of the washing bucket and is located above the opening, the water collecting cover comprises a notch, the filter device is arranged on the inner side wall of the washing bucket and comprises a water inlet, a water outlet and a filter part, and the water outlet is communicated with the notch. Accordingly, by reasonably arranging the structures and assembling forms of the washing bucket, the water collecting cover and the filter device, the flow track of line chips filtered out of water is limited, the possibility that the line chips return to thewashing bucket through the filter device is lowered, timely collection and discharge of the line chips are guaranteed, and the use performance of the product is improved; meanwhile, by means of the flow at a water level, the purpose of automatically discharging the line chips out of the washing machine can be achieved.

The invention discloses a bedroom cold water pump comprising a motor part assembly, a volute assembly, a circulating cooling filter assembly and a cutting assembly. One part of water of a sewage outlet of a water outlet base of the volute assembly is introduced into a cooling sealing cavity in the motor part assembly through the circulating cooling filter assembly, sewage is used for circularly cooling a motor in a motor sealing cavity, energy utilization of resources is achieved, and the motor can be rapidly cooled. The cutting assembly is arranged in the volute assembly, arc tool slots are arranged on the two sides of the bottom end of a cutting tool bit in a mirror image mode, the rotary cutting efficiency of the two ends of the cutting tool bit can be improved through the arc tool slots, hard impurities can be rapidly cut, and the cutting effect is good. A thread protruding ring is in clamped connection with the interior of a ring-hook-shaped avoiding groove and is fixed through aconnection bolt, and connection firmness between the cutting tool bit and a cutting port ring part can be effectively ensured. By means of up-down matching arrangement of the cutting tool bit and thecutting port ring part, impurities are not likely to be clamped in the cutting assembly to caused faults and damage.

The invention relates to a gravity sewage discharging mechanism of a train excrement collecting system and a vacuum excrement collecting system. The gravity sewage discharging mechanism comprises a transfer box and a dirt box, the transfer box is arranged above the dirt box, the transfer box communicates with the dirt box through a communication port, a valve used for controlling on-off of the communication port is installed at the communication port, the valve is a plug valve or a diaphragm valve, and the transfer box discharges dirt into the dirt box through gravity. The integral structure is simple, the caliber of the communication port is not limited, the plug valve or the diaphragm valve is used for replacing a sliding plate valve in the prior art, gravity pollution discharge can be more stable and reliable, and the maintenance cost can be reduced.

The invention provides a fair-faced concrete, belongs to the technical field of building materials, and concretely provides a fair-faced concrete containing alkaline electrolyzed water. The influenceof factors such as the water-binder ratio, the admixture mixing amount and the age on the strength, the crack resistance and the durability of the concrete is changed, the mix proportion design of thefair-faced concrete is optimized, and the cement consumption is reduced, so a green, efficient, low-cost, non-toxic and pollution-free facing fair-faced concrete preparation technology is realized, and the purpose of meeting the requirements of fair-faced, high-durability and economic concrete is achieved.

The invention discloses a biomass combustion furnace, belongs to the field of combustion equipment, and solves the problem of poor use experience caused by ash flying in a furnace body or flying into a room in the prior art. According to the technical scheme, the top end of a combustor is open, and a furnace body is provided with an air inlet channel extending to the bottom of the combustor; and a through opening used for air inlet and ash falling is formed in the bottom face of the combustor, a fire grate is arranged above the through opening, a water storage disc and an ash receiving disc are arranged at the bottom of the furnace body, and the ash receiving disc is located below the combustor and faces the through opening. The biomass combustion furnace is mainly used for effectively inhibiting ash flying and improving the combustion-supporting effect.

The invention discloses an anti-corrosion and anti-blockage drainage pipe and a preparation method thereof. The anti-corrosion and anti-blockage drainage pipe drainage pipe comprises a plastic pipe, aself-cleaning layer and an anti-corrosion layer, wherein the anti-corrosion layer is uniformly sprayed on the inner wall of the plastic pipe, and the self-cleaning layer is uniformly sprayed on the surface of the anti-corrosion layer and comprises the following raw materials: nano-silver, glass powder, polystyrene and polydimethylsiloxane; the anti-corrosion layer comprises the following raw materials: polytetrafluoroethylene, carbon fiber, bisphenol A epoxy resin, additives, turpentine and a compatilizer. The pipe has the beneficial effects that a self-cleaning effect can be achieved, dirt in the pipe can be removed to achieve the effect of being in the silt but not imbrued, blockage of the drainage pipe is effectively prevented, and the pipe is provided with the anti-corrosion layer, sothat corrosion resistance and oxidation resistance of the pipe are increased, stability of the pipe is enhanced, and the service life of the pipe is prolonged.

The invention discloses a sewage pump. The sewage pump comprises a pump shell, wherein an impeller is arranged in the pump shell, and a power shaft is arranged on the right side of the pump shell; anoutlet pipe and an inlet pipe are arranged on the outer side of the pump shell; a first protruding block and a second protruding block are arranged on the portions, on two sides of the inlet pipe, ofthe pump body respectively, a first rotating groove is formed in the first protruding block, and a second rotating groove and a third rotating groove are formed in the second protruding block; the first protruding block and the second protruding block are provided with cover plates covering the first rotating groove, the second rotating groove and the third rotating groove; a first rolling shaft is rotatably connected in the first rotating groove, a second rolling shaft is rotatably connected in the second rotating groove, and a filtering belt penetrating through the third rotating groove andthe inlet pipe is wound between the first rolling shaft and the second rolling shaft; and a cleaning assembly is arranged in the third rotating groove, and a motor is fixedly mounted on the second protruding block. The sewage pump not only is simple in structure, but also can clean the filtering belt automatically.

The invention relates to a filter membrane for air conditioners, which is composed of, by mass, 8-32 parts of polylactic acid fibers, 8-20 parts of polyvinyl alcohol, 8-16 parts of polypropylene, 20-30 parts of polyhydroxybutyrate-hydroxyvalerate, 15-65 parts of a solvent, 4-12 parts of an anti-bacterial agent, and 6-10 parts of a pore-forming agent. The anti-bacterial agent is prepared by mixing methylene cyanate and potassium sorbate according to the mass ratio of 2.1-2.7:1. The filter membrane includes the polylactic acid fibers, which have high heat resistance and high strength, so that the filter membrane has excellent heat resistance and is not liable to deform at high temperature, and pore structures in the filter membrane are free from being blocked and heating or cooling effects of the air conditioner are greatly improved. Through synergistic effect of the components, the filter membrane has long-lasting anti-bacterial and bacteria-resistant capability and has self-cleaning effect.

The invention relates to an environment-friendly filter membrane, which is composed of the following raw materials in parts by mass: 10-22 parts of polylactic acid fiber, 10-26 parts of polyvinyl alcohol, 10-20 parts of polypropylene, and 24-32 parts of polyhydroxyalkanoate 10-60 parts, 10-60 parts of solvent, 6-16 parts of antibacterial agent and 6-10 parts of additive; wherein, said antibacterial agent is formed by mixing chitin and potassium sorbate, and the mass ratio of chitin and potassium sorbate is 1:1.7~2.1. The advantage of the present invention is that: polylactic acid fiber is used in the formula of the present invention to prepare the filter membrane, which can make the filter membrane have excellent heat resistance, is not easy to deform under high temperature environment, avoids clogging of the pore structure of the filter membrane, and greatly Improve the heating or cooling effect of the air conditioner; and through the synergistic effect of each component, the filter membrane has long-term antibacterial and antibacterial ability, plays a self-cleaning role, and uses environmentally friendly polyhydroxyester fatty materials , improve the environmental performance of the filter membrane.

The invention discloses an environment-friendly biomass bacteriostatic wear-resistant agent and a preparation method thereof. The preparation method comprises the following steps of completely mixing straw ash water, rice washing water, allicin and chlorothalonil; continuously adding nanoscale kaolin and high-wear-resistance carbon black, and performing stirring and mixing; continuously adding nanoscale titanium dioxide, and performing stirring and mixing; and continuously adding a film-forming agent and a penetrating agent, performing stirring and mixing, and performing discharging and packaging to obtain the environment-friendly biomass bacteriostatic wear-resistant agent. The preparation process of the environment-friendly biomass bacteriostatic wear-resistant agent is simple and easy to operate; the prepared environment-friendly biomass bacteriostatic wear-resistant agent improves the performance of an original material and can have excellent performance such as bacteriostatic performance and wear resistance; the service life of the material is prolonged, and the original defects of the material are improved; and meanwhile, a formula does not contain harmful substances such as strong acid and strong base, and a few natural extracts are used, so that the concept of environmental protection is well embodied while new performance is obtained.

The invention provides a whitening and self-cleaning coating of a surface of a titanium alloy dental prosthesis and a preparation method of the coating. The whitening and self-cleaning coating for the surface of the titanium alloy dental prosthesis comprises a white micro-arc oxidation inner layer and a self-cleaning outer layer which are sequentially arranged from inside to outside. In addition, the preparation method of the coating for the surface of the titanium alloy dental prosthesis mainly comprises the following steps: firstly, forming the white micro-arc oxidation inner layer on the surface of a titanium alloy base material by utilizing a low-energy-consumption micro-arc oxidation technology, and then preparing the self-cleaning outer layer on the surface of the micro-arc oxidation inner layer. The coating of the invention has a simple preparation method, low cost and high wear resistance; binding force between the coating and a metallic matrix is powerful, and the color of the coating is close to that of teeth, so that the metal color of the titanium alloy matrix can be effectively shielded; and meanwhile, the surface of the coating is in a hydrophobic state, adhesion of substances such as bacteria and microorganisms can be effectively inhibited, thereby giving the surface of the prosthesis the self-cleaning characteristic.

The invention discloses a self-cleaning PCB which comprises a PCB, a copper foil layer, a resin bonding layer, a flame-retardant insulating bottom plate, a connecting upper clamping plate, a knob, athreaded rod, a connecting lower clamping plate, a fixing screw, a mounting plate, a fixing bottom plate, a lower connecting plate, a rotating shaft, a rubber pad layer, a fixing clamping plate, an upper connecting plate, a micro fan, an upper fixing plate, a damping spring, a round fixing shell, a connecting round rod, a fixing round plate and a rubber gasket. The self-cleaning PCB has the beneficial effects that the device is reasonable in structure; the heat dissipation effect on the PCB can be achieved through the micro fan; heat accumulation and component damage caused by the too high temperature of the PCB in the using process are avoided; meanwhile, dust accumulated on the surface of the PCB can be blown away by the micro fan; dust is prevented from being accumulated on components;and the self-cleaning effect is achieved.

The invention provides a preparation method of self-cleaning toughened glass, comprising: spraying nano-self-cleaning paint on the glass surface, which includes the following components: nano-cobalt oxide, nano-zirconia, nano-molybdenum trioxide, water glass, hollow glass micro Beads, palygorskite powder, sepiolite powder and solvent; then soak the glass in acid solution for acid treatment; bake at 200~300°C for 20~40 minutes, and then temper at 600°C~680°C for 6~ After 10 minutes, self-cleaning tempered glass is obtained after cooling. The present invention uses nano-cobalt oxide, nano-zirconia, nano-molybdenum trioxide, water glass, hollow glass beads, palygorskite powder and sepiolite powder as the main components of the nano-self-cleaning coating. Under the synergistic effect of each component, not only The self-cleaning effect is played, and the crystal form does not change after high-temperature treatment, thereby ensuring that the prepared self-cleaning tempered glass has a good self-cleaning effect.

The invention provides a double-component polyurethane waterproof coating structure. The double-component polyurethane waterproof coating structure comprises a base layer, a bonding layer, a spacing layer and a waterproof layer, wherein the base layer is arranged at the bottommost portion, the bonding layer is arranged above the base layer, the spacing layer is arranged above the bonding layer and the waterproof layer is arranged above the spacing layer; the base layer is made of a metallic or nonmetallic material, the bonding layer is made of a modified epoxy resin material, the spacing layer is made of a nano material with a double-layer protruding structure on the surface, and the waterproof layer is a double-component polyurethane coating consisting of two main components, i.e., prepolymer and asphalt paste containing no coal tar, catalyst and other additives. The double-component polyurethane waterproof coating structure has the advantages of simple structure, high practicability, strong impact resistance, high water-tightness and strong waterproof and anti-seepage performance.

The invention discloses high-strength premixed concrete production equipment and a production process, and particularly relates to the technical field of concrete processing devices. The high-strengthpremixed concrete production equipment comprises an equipment support, wherein a power mechanism, a cylinder mechanism, a feeding port mechanism and a material tank are fixedly arranged on a bottom frame of the equipment support, the feeding port mechanism is arranged above the cylinder mechanism, and a quantitative pump mechanism is fixedly arranged on a top frame of the equipment support. According to the high-strength premixed concrete production equipment and the production process, the power mechanism and the cylinder mechanism are arranged, and main raw materials in a shell of a stirring cylinder are fully premixed through irregularly distributed cylinder stirring blocks; compared with a traditional single-screw-rod stirring device, the high-strength premixed concrete production equipment adopts two groups of cylinder stirring blocks, so that the stirring volume is larger, and the stirring is more uniform; and meanwhile, a cylinder stirring rod and the cylinder stirring blocks adopt a separated mechanism, so that the processing cost is lower than that of a spiral blade, and the replacement is convenient.

The invention provides a cigarette stabilizing device of a cigarette carton sealing machine. The cigarette stabilizing device comprises a cigarette pushing plate, negative pressure suction parts, a first in-place detection switch, a second in-place detection switch, a controller and a solenoid valve, the first in-place detection switch is used for being relative to a cigarette on the uppermost layer of a cigarette stack; the cigarette pushing plate is provided with a cigarette pushing surface, the four negative pressure suction parts are correspondingly arranged on the extension direction of the cigarette pushing surface; the solenoid valve is a two-position three-way solenoid valve, when the solenoid valve is in a first working position, a negative pressure air system communicates with the negative pressure suction parts; when the solenoid valve is in a second working position, a positive pressure air system communicates with the negative pressure suction parts; the solenoid valve iselectrically connected with the controller; the second in place detection switch is used for detecting whether the cigarette stack is pushed into a box in place or not; and the first in-place detection switch and the second in-place detection switch are electrically connected with the controller correspondingly. The cigarette stabilizing device of the cigarette carton sealing machine can better avoid the position deviation of the cigarette and has a function of self-cleaning.

The invention relates to a self-cleaning grinding and polishing tool, which relates to a grinding and polishing tool for self-cleaning overflow grinding and polishing liquid and grinding and polishing scraps through vacuum absorption while grinding and polishing a surface in the central liquid supplying process. The tool consists of a pressurization unit, a liquid supplying and cleaning unit and a grinding and polishing operation unit, wherein the pressurization unit is used for adjusting grinding and polishing pressure; the liquid supplying and cleaning unit is used for introducing grinding and polishing media and vacuumizing and absorbing the grinding and polishing media; and a grinding and polishing effect is achieved by the grinding and polishing operation unit. The grinding and polishing tool moves in a certain track under the control of a computer, so that a large plane can be totally flattened. The tool has the advantages that the grinding and polishing media are introduced into the center of a grinding and polishing head, so that the grinding and polishing media can be fully contacted with grinding and polishing materials, and the grinding and polishing quality and the grinding and polishing efficiency are improved; and by a vacuumized pore passage of an outer ring of the grinding and polishing tool, the grinding and polishing media which are subjected to a grinding and polishing process is sucked away in time, so that the ground and polished surface is prevented from being polluted, the effect of self-cleaning the surface of a workpiece in the grinding and polishing process is achieved, subsequent cleaning processes are eliminated, and processing efficiency is improved.

The invention discloses a bedroom cold water pump comprising a motor part assembly, a volute assembly, a circulating cooling filter assembly and a cutting assembly. One part of water of a sewage outlet of a water outlet base of the volute assembly is introduced into a cooling sealing cavity in the motor part assembly through the circulating cooling filter assembly, sewage is used for circularly cooling a motor in a motor sealing cavity, energy utilization of resources is achieved, and the motor can be rapidly cooled. The cutting assembly is arranged in the volute assembly, arc tool slots are arranged on the two sides of the bottom end of a cutting tool bit in a mirror image mode, the rotary cutting efficiency of the two ends of the cutting tool bit can be improved through the arc tool slots, hard impurities can be rapidly cut, and the cutting effect is good. A thread protruding ring is in clamped connection with the interior of a ring-hook-shaped avoiding groove and is fixed through aconnection bolt, and connection firmness between the cutting tool bit and a cutting port ring part can be effectively ensured. By means of up-down matching arrangement of the cutting tool bit and thecutting port ring part, impurities are not likely to be clamped in the cutting assembly to caused faults and damage.