91results about How to "Guarantee the quality of purification" patented technology

The invention relates to a self-cleaning air purifier. With a motor driving a first cam to shake a filter screen, dust on the surface of the filter screen is shaken off into a dust collecting groove. With a motor driving a second cam to drive a brush holder, the brush holder drives a brush to move, and dust on the filter screen is swept into the dust collecting groove. Through self-shaking of the filter screen and with the brush brushing the filter screen, dust on the filter screen can rapidly fall into the dust collecting groove. While the first cam drives the filter screen to ascend, the second cam drives the brush to descend. With the filter screen and the brush moving opposite to each other, the brush sweeps dust on the filter screen more easily. With a pneumatic slide block driving the brush to move in the length direction of a filter, each part of the filter can be cleaned by the brush. Thus, cleaning quality is guaranteed. According to the invention, manpower is saved, dust on the filter screen can be cleaned timely, and purification efficiency and purification quality of the air purifier are guaranteed.

The invention discloses a multi-stage air purifying treatment device. The multi-stage air purifying treatment device comprises a regulation control system, an air suction device, a flow guiding mechanism and a purifying system, wherein the air suction device is used for sucking air from exterior, and the air can enter the inner part of the purifying system for being purified after being subjected to flow guiding of the flow guiding mechanism; the air suction device comprises an air exchange tube and an air suction mechanism; the flow guiding mechanism comprises a flow guiding plate and a regulating device; the purifying system is arranged at the inner part of the air exchange tube; the purifying system comprises a purifying tube, a primary filter device, a disinfecting mechanism and a purifying mechanism; the regulation control system comprises a detection module, a conversion module, a treatment module and a motor speed regulating circuit. The whole multi-stage air purifying treatment device disclosed by the invention can be in air purification through a multi-stage treatment mode, and a good purification effect can be achieved; the purifying speed can be automatically regulated while air quality detection is carried out, the energy is favorably saved while purification safety is ensured, and the functions of being green and protecting the environment are realized.

The invention discloses a household air purifier. The household air purifier comprises a base (1), a frequency conversion fan (2), an electrostatic filter (3), a fine filter (4) and a mixed adsorption bed layer (5); the frequency conversion fan (2) is arranged on the base (1); the electrostatic filter (3), the fine filter (4) and the mixed adsorption bed layer (5) are arranged above the frequency conversion fan (2) from bottom to top in turn; the mixed adsorption bed layer (5) is detachably connected with a casing of the fine filter (4); the upper end surface of the mixed adsorption bed layer (5) is provided with an end cover (6) which is provided with an air outlet; the end cover (6) is also provided with a sealing cover which can be used for sealing the air outlet; the end cover (6) is also provided with a penetrating detector (7). The invention also discloses a purification and regeneration process of the household air purifier. According to the household air purifier and the purification and regeneration process thereof, the detachment and the installation are convenient, the service life is long, and the purification and the regeneration can be achieved.

The invention discloses a rapid treatment device for rural domestic sewage, and belongs to the technical field of domestic sewage treatment. The rapid treatment device comprises a base, a shell is fixedly arranged on the top portion of the base, four groups of partition plates are uniformly and fixedly arranged in the inner cavity of the shell, the shell is sequentially divided into a primary treatment cavity, an aeration precipitation cavity, an agent adding treatment cavity, a disinfection purification cavity and a purified water storage cavity by the partition plates from left to right, a sewage pump is fixedly arranged on the left side of the top of the base, and a recovery pump is fixedly arranged at the right side of the top portion of the base. According to the rapid treatment device for rural domestic sewage, sewage enters the primary treatment cavity, the aeration precipitation cavity, the agent adding treatment cavity and the disinfection purification cavity for layer-by-layer treatment, the overall treatment efficiency and quality are high, treated water can be repeatedly utilized, the utilization rate of domestic sewage is greatly increased, and the use cost is saved.

The invention discloses a high temperature waste gas treatment device. The device comprises a separator body and a cleaner body. Both sides of the separator body are provided with an inlet and an outlet. The inside of the cleaner body is provided with a uniform flow net, a low temperature plasma electrical field, a filter screen component, an ultraviolet lamp tube and an ultrasonic atomizer component sequentially from the inlet to the outlet. The filter screen component is levelly placed and both sides of the screen are fixed by a first flow block plate in crisscrossing arrangement. An air inlet connector and an air outlet are placed on the upper portion of one side of the separator body. The air outlet is communicated with the cleaner body. A separation block is mounted between the inner part of the separator body between the air inlet connector and the air outlet. A water storage trough is placed in the inner part of the separator body under the separation block. The water storage trough is connected with the atomizer nozzle through a high pressure pump. The atomizer nozzle is placed in the air inlet connector. The device can effectively eliminate the particles in waste gas, and carry out a destructive purification treatment to the waste gas molecules. The treatment effect is fine. The application scope is wide.

The invention discloses an ultrafiltration type direct drinking water purifier; and a filtering device comprises a quartz sand filter core, an active carbon filter core and an ultrafiltration filter core, wherein a quartz sand filter core water inlet electromagnetic valve, an active carbon filter core backwash water inlet electromagnetic valve and an ultrafiltration filter core backwash water inlet electromagnetic valve are respectively arranged on pipelines connected with the quartz sand filter core, the active carbon filter core and the ultrafiltration filter core. The ultrafiltration type direct drinking water purifier disclosed by the invention has the advantage of high purifying efficiency and the purified water reaches a drinking standard. The ultrafiltration type direct drinking water purifier disclosed by the invention is convenient to wash, and secondary pollution can be avoided; as a PLC (Programmable Logic Controller) control system is arranged, simplicity and intuitiveness in operation is achieved; and intelligent and efficient water inlet, water outlet and washing pipelines can be achieved.

The invention provides a graphite purifying device. The device comprises a feeding system, a purifying furnace and a discharging system which are sequentially arranged in vertical direction, wherein the purifying furnace comprises a muffle for purifying and heating graphite and a resistance heating device surrounding the muffle in circumferential direction. The graphite purifying device works in vertical direction, the feeding system feeds a graphite material at the top of the purifying furnace, the graphite is purified in the purifying furnace and is discharged by the discharging system at the bottom of the purifying furnace, the graphite material is purified in the muffle, and the resistance heating device is used for guaranteeing the processing temperature in the muffle so as to realize heating at high temperature to guarantee the quality of graphite purifying. Due to structural design of the graphite purifying device with the vertical structure, the graphite can be purified continuously at high temperature, so that the production efficiency is improved, and the graphite purifying effect is guaranteed.

The invention discloses integrated domestic sewage treatment equipment. The integrated domestic sewage treatment equipment comprises a treatment tank, wherein the treatment tank is fixedly arranged onground through a support bracket around the bottom part; a flocculation tank, a disinfection tank and a percolation tank are sequentially arranged in the treatment tank along the length direction; awastewater intake pipe is arranged under the left side of the treatment tank and is fixedly connected with the flocculation tank; a flocculation device is arranged in the flocculation tank, a disinfection device is arranged in the disinfection tank, and a percolation device is arranged in the percolation tank; a water drain pipe is arranged above the right side of the treatment tank and is fixedlyconnected with the percolation tank; a controller is arranged at the exterior of the treatment tank, and is electrically connected with the flocculation device, the disinfection device and the percolation device. The integrated domestic sewage treatment equipment provided by the invention has the beneficial effects that the structure is simple, and the practicality is strong.

The invention provides a dust and bacteria removing system installed in an air outlet duct and an air inlet duct of a central air-conditioner. The dust and bacteria removing system comprises an organism intercepting device, an ionization dust-cleaning device, an ultraviolet sterilization device and an ozone eliminating device which are arranged in a shell through a slide way in sequence, wherein the ionization dust-cleaning device comprises an ionization component and an adsorption component which are sequentially arranged; and the ozone eliminating device comprises an anion generator and an ozone catalyzing device which are sequentially arranged. The dust and bacteria removing system is applicable to a ventilation system of public indoor environment for purifying the air of the indoor environment, greatly increases the dust and bacteria removing efficiency and keeps good air quality for a long time after air purification, and at the same time, the dust and bacteria removing system iseasy to disassemble and assemble, and is beneficial to maintenance and cleaning.

The invention relates to purification and filtration treatment, in particular to an industrial rare earth treatment discharged sewage purification and filtration treatment device. The invention mainlyprovides the industrial rare earth treatment discharged sewage purification and filtration treatment device which does not need to provide a large purification place, intermittently inputs disinfectant fluid after carrying out secondary filtration on wastewater and controls the cost. The industrial rare earth treatment discharged sewage purification and filtration treatment device comprises a bottom plate, wherein a discharging mechanism is arranged on one side of the top of the bottom plate; a pushing mechanism which is connected to the discharging mechanism; and a solid matter collecting frame which is arranged on the other side of the top of the bottom plate. By arranging the discharging mechanism and the pushing mechanism, primary treatment is conducted on wastewater, solid-liquid separation is achieved, then separated treatment is conducted on the wastewater, and the basic functions of the device are achieved; by arranging the rotating mechanism and the purification mechanism, disinfectant fluid is intermittently and uniformly sprayed, purification is matched, and the purification quality is guaranteed.

The invention discloses a membrane concentrating separation device for a traditional Chinese medicine extract liquid. The device comprises a stirring tank, a heating tank, a membrane concentrating tank and a cooling tank, a motor is arranged at the upper end of the stirring tank, a stirrer and a heating wall are arranged at the lower end of the motor, a first connecting tube and a filter screen are arranged between the stirring tank and the heating tank, a distillation collector and a heating tube are arranged at the upper end of the heating tank, a liquid inlet tube is arranged at one side ofthe lower end of the heating tank and between the lower end of the heating tank and the upper end of the membrane concentrating tank, a feed plate connected with the liquid inlet tube and a pluralityof atomizing nozzles are arranged in the heating tank, an adsorption layer and a first high-pressure permeation membrane are arranged at the lower end of a first high-pressure permeation membrane, apressure pump and a concentrate outlet are arranged at one side of the upper end of the membrane concentrating tank, a second connecting tube is arranged between the membrane concentrating tank and the cooling tank, condensing tubes are arranged at the inner upper end and the inner lower end of the cooling tank, and a refluxing tube is arranged at one side of the cooling tank. The device reaches amembrane concentrating effect to make the traditional Chinese medicine extract liquid refined.

The invention discloses a design method of low impact development storm-water system, and belongs to the technical field of low impact development storm-water treatment. The method includes selecting one or multiple water quality treatment methods and devices to perform water quality treatment for the storm-water from the storm-water water quality treatment methods and devices according to the concentration of the pollutant contained in the surface runoff of the storm-water and the size of the particulate matter, and selecting one storm-water water amount control method from storm-water water amount control methods according to the object of the storm-water treatment. The design method of the invention can reasonably design low impact development storm-water system according to the different objects of the storm-water treatment in the project and differences of specific storm-water water quality and water amount, can fully consider the effect, efficiency, and characteristic of each node facility in the system, can perform system efficiency-accounting for the whole technological process, and can effectively improve the perfectness and high effectiveness of the system based on the premise of guaranteeing purification quality of the water quality.

The invention relates to a water purifier with purifying, forward washing and backward washing functions. A first valve ring, a second valve ring and a third valve ring are sequentially arranged on a valve element in a sleeving manner, and a first sealing ring, a second sealing ring, a third sealing ring, a fourth sealing ring and a fifth sealing ring are fixedly arranged on the inner wall of a valve. A controller capable of controlling the valve element to move enables passages of all channels inside the valve to be changed in directions after the position of the valve element is converted, and further the flow direction is conveniently set, and thus the functions of purifying water, forwards or backwards washing purifying tanks, and the like are realized. Meanwhile, the water purifier is provided with a plurality of purifying tanks, so as to be capable of realizing washing of multiple kinds of impurities in water once and multiple times of purifying; impurities accumulated in all the purifying tanks can be forcefully carried away due to backwards washing, and thus the purifying quality is favorably ensured, especially, a forwards washing procedure is added after the backwards washing, a small amount of sewage or impurities deposited on the bottoms of the tanks after being backwards washed are thoroughly removed, the purifying quality can be further ensured, and the service life of a filter material can be prolonged.

The invention discloses an energy-saving purification device for sewage treatment, wherein the energy-saving purification device comprises a purification shell; a rectangular groove is formed in the outer wall of the top of the purification shell, a storage shell is mounted on one side of the outer wall of the top of the purification shell, a feeding pipe is inserted into one side of the outer wall of the top of the storage shell, and a liquid adding pipe is inserted into one side of the outer wall of the top of the purification shell; one sides of the inner walls of the two ends of the purification shell are rotationally connected with a same rotating shaft. According to the energy-saving purification device for sewage treatment, through the arrangement of a connecting spring and a rubberpad on a connecting block, scraping of a scraping plate can be smoother; through the arrangement of a sliding ring, the scraping plate can move back and forth on the purification shell, sewage is prevented from entering the storage shell, and the waterproof effect is achieved; through arrangement of a motor, a lead rod and a sliding block, the sliding plate can be driven to move back and forth inthe purification shell, the arc-shaped scraping plate on the sliding plate can be driven to move, sewage at the bottom of the purification shell can be scraped, and deposition is avoided.

The invention discloses a mobile gas purification device, which comprises an adsorber cylinder, which can be placed in a cylinder oven for heating and activation, and the top of the adsorber cylinder is provided with a charging pipe and an air outlet pipe , the bottom of the adsorber cylinder is provided with a discharge pipe, the adsorber cylinder is also provided with an air inlet pipe, and the top of the air inlet pipe passes through the top of the adsorber cylinder to the adsorber cylinder outside, the bottom end of the air inlet pipe is at the inner bottom end of the adsorber cylinder, and a pair of thermometer sleeves are also arranged on the side wall of the adsorber cylinder; Heating activation avoids explosion during on-site electric heating and ensures the safety of production; the thermometer casing on the side wall is used to install a thermometer to avoid leakage of the temperature measuring point, and the activity of the current adsorbent can be known through temperature monitoring, which improves the adsorption capacity. The utilization rate of the agent can reduce the production risk, improve the activity of the adsorbent and ensure the purification quality.

The invention discloses a cyclone dust removal device for treating acid waste gas, belongs to the technical field of environmental protection equipment, and aims to solve the problems that the existing cyclone dust collector is poor in purification effect at an outlet due to the fact that settled dust is easily brought up by purified gas during use, dust is easily gathered on the inner wall duringuse, wind resistance is increased, and the gathered dust is difficult to remove. The device comprises an outer shell; the top of the outer shell is fixedly connected with a group of driving motors; and a group of dust scraping devices are rotationally connected to the interior of the outer shell. According to the device, a dustproof baffle is arranged at the bottom of an air outlet pipeline; dustcollected at the bottom is effectively prevented from being brought up again, the purification quality is guaranteed, meanwhile, the dust scraping devices are arranged to scrape dust on the inner wall of the outer shell, the inner wall of the outer shell is kept clean, the dust is prevented from being gathered on the inner wall of the outer shell, the dust removal effect is better, and the cleanliness of gas obtained after dust removal is higher.

The invention discloses a method for separating and purifying exosomes. The method comprises the following steps: S1, preparing materials; S2, performing primary separation; S3, performing primary purification; S4, performing filtering and purifying to obtain exosomes with relatively high purity, repeatedly performing filtering twice by using a sterile filter, and filtering impurities to obtain high-purity exosomes; S5, strengthening purification; S6, performing standing and mixing; and S7, collecting the exosomes. By adding agglutinin, a phosphate buffer salt solution, a sucrose solution and an exosome suspension for a cooperative reaction, the purification degree of the exosomes is gradually increased, the operation is simpler, the purification speed is high, filtration is performed through the sterile filter, mixed impurity proteins in the exosomes are effectively removed, the purity and yield of the exosomes are ensured, and a large quantity of polluted proteins in the exosomes are removed through hydroxyapatite and sodium dihydrogen phosphate solutions, so that the purification quality is further guaranteed.

The invention discloses a sewage treatment and reutilization circulating system. The sewage treatment and reutilization circulating system comprises a flow collection chamber, a pressurizing device, amulti-grade sewage treatment device, an integrated power control device and a speed-reducing pump, wherein a sewage valve and a circulating valve are arranged at a side edge of the flow collection chamber; a sewage capacity sensor is arranged in the flow collection chamber; the circulating valve is connected with a double-pipe solenoid valve through a sewage circulating pipeline; a flow guide pipe is arranged between the flow collection chamber and the pressurizing device; the pressurizing device is connected with a filtering device; a waste dreg discharging pipe is arranged at the side edgeof the filtering device; the multi-grade sewage treatment device is connected with the filtering device. The sewage treatment and reutilization circulating system disclosed by the invention has the beneficial effects that sewage can be subjected to filtering, multi-grade purification and sterilization treatment, the sewage purification efficiency is high and the purification quality is high; meanwhile, whether purified sewage quality accords with standards or not can be detected; when the purified sewage quality does not accord with purification standards, circulating treatment is carried outand purification quality of treated water is ensured.

The invention discloses a purifying treatment device used for high-salinity and high-alkali sewage. The purifying treatment device comprises a crystalizing chamber, a spiral centrifugal chamber, a filtering and absorbing chamber, an electrolyzing chamber and a neutral reaction chamber. A grit filtering layer, an organism filtering layer and an activated carbon adsorption layer are arranged inside the filtering and absorbing chamber sequentially from top to bottom. The electrolyzing chamber is positioned behind the filtering and absorbing chamber. A conduit arranged at the bottom end of the filtering and absorbing chamber is connected with the electrolyzing chamber, liquid is supplied to an electric appliance from the top end of the electrolyzing chamber, and a positive electrode and a negative electrode are respectively arranged inside the electrolyzing chamber. The neutral reaction chamber is positioned behind the electrolyzing chamber, a conduit arranged at the bottom end of the electrolyzing chamber is connected with the neutral reaction chamber, and an acid liquor box and an alkali liquor box are arranged on two sides of the neutral reaction chamber respectively. The purifying treatment device used for the high-salinity and high-alkali sewage has the advantages that soluble substances and insoluble substances in the sewage are treated separately, sewage treatment efficiency is improved greatly, and sewage treatment effect can be guaranteed by means of three treatment manners including biological decomposition, chemical reaction and physical absorption.

The invention relates to the technical field of graphite purification, in particular to a method for preparing high-carbon graphite by using middle-carbon crystalline flake graphite as a raw material. The method disclosed by the invention comprises the steps: the middle-carbon crystalline flake graphite and sodium hydroxide are mixed and are pressed into blocks in a mold, high-temperature calcination is carried out under the condition that the middle-carbon crystalline flake graphite is embedded, washing is carried out, then the obtained graphite powder is subjected to acid leaching and washing in sequence, drying is carried out, thus high-carbon graphite of which the fixed carbon content is more than 99.5 wt.% is obtained. The graphite and the sodium hydroxide are mixed and are pressed into blocks in the mold, thus the contact degree of impurities and sodium hydroxide and the heat conduction efficiency of a system are improved, and material and energy consumption is reduced; a high-purity nitrogen protection method is replaced with the middle-carbon crystalline flake graphite embedded method, the purification quantity is ensured, meanwhile, the corrosion to equipment in the production process is reduced, and thus the production cost is reduced. According to the invention, the reaction speed of impurities and sodium hydroxide is accelerated, the use ratio of sodium hydroxide is improved, the reaction temperature is reduced, the operation is simple and the cost is low.

A distiller belongs to distillation equipment and comprises a collection chamber for collecting a gas, the upper portion of the collection chamber is communicated with a distillation chamber through a communication port, a helical tube used for condensing the gas is arranged in the distillation chamber, the helical tube is communicated with a water storage chamber arranged in the periphery of the distillation chamber, the water storage chamber is provided with an inlet, and the helical tube is communicated with an outlet; a downward purification tube is arranged at one side of the connection port of the collection chamber and the distillation chamber at the bottom of the distillation chamber; and the purification tube is communicated with a shunting chamber, a magnet offset device for changing the flow track of a liquid is arranged in the shunting chamber, the bottom of the shunting chamber is communicated with a shunting tube and a refluxing tube respectively, and the refluxing tube is communicated with the collection chamber. The distiller can synchronously detect the purity of a purified product, and can instantly automatically returns the undistilled and inadequately-distilled liquid to the distillation chamber for afresh distillation, so the purification quality is guarantees, and the work efficiency is accelerated.

The invention relates to water purification equipment, which comprises a filtering barrel, wherein the top of the filtering barrel is connected with a water inlet, the bottom of the filtering barrel is connected with an outflowing water storage tank; a first filter screen, a second filter screen and a third filter screen are arranged in the filtering barrel; a first filtering cavity is formed between the first filter screen and the top of the filtering barrel, a second filtering cavity is formed between a first filter screen and the second filter screen, a third filtering cavity is formed between the second filter screen and the third filter screen, the first filtering cavity is filled with activated carbon particles, the second filtering cavity is filled with nanosphere particles, the third filtering cavity is filled with polyiodide resin particles; two ends of the first filter screen, the second filter screen and the third filter screen are respectively connected with a driving component; the driving components are fixedly arranged on the inner wall of the filtering barrel; a plurality of flushing mechanisms are arranged on the lower sides of the first filter screen, the second filter screen and the third filter screen, so that the purification quality is guaranteed and the service life of the water purification equipment can be prolonged.

The invention provides a device for photocatalytic treatment of heavy metal-containing wastewater. The device for photocatalytic treatment of the heavy metal-containing wastewater comprises a reactiontank, a box cover arranged at the top of the reaction tank, and a first water pump, wherein the bottom of the first water pump is fixed to the top of the box cover. The device for photocatalytic treatment of the heavy metal-containing wastewater has the following advantages: the oxygen content in the wastewater is increased, and sufficient oxygen content in the wastewater is guaranteed, so that the oxygen demand in a photocatalytic reaction is guaranteed, and reaction efficiency and purification quality are improved; uniformity of ultraviolet light irradiation and uniformity of the photocatalytic reaction are guaranteed, the reaction rate of the photocatalytic reaction is increased, uniformity of the reaction is guaranteed, the purification quality and the purification effect are improved, the content of heavy metals in the wastewater is reduced to the maximum extent, purification quality of heavy metal sewage is guaranteed, and the standard of safe emission is reached; and impuritiescan be easily collected and cleaned, so that a guarantee is provided for normal operation of equipment.

The invention provides a fluidized bed precipitation device and a sewage treatment system thereof. The fluidized bed precipitation device comprises an outer shell, a cover body, an inner shell, a water collecting tank, a stirrer and a blocking piece; the outer shell is of a hollow structure with an opening in the top, the hollow structure forms a containing cavity, and a sludge discharging deviceis arranged at the bottom of the outer shell; the cover body is connected with the outer shell and seals the opening of the outer shell; the inner shell is arranged on the lower portion of the containing cavity, the inner shell is of a hollow structure with an opening in the top, the hollow structure forms a stirring cavity, the bottom of the inner shell is connected with a water inlet pipe, and the water inlet pipe communicates with the inner shell and the outer shell; the water collecting tank is arranged on the upper portion of the containing cavity, the side wall of the water collecting tank is in sealed connection with the side wall of the outer shell, and a water outlet pipe is connected outside the water collecting tank and provided with a water outlet valve; the stirrer is providedwith a stirring rod which penetrates through the cover body and extends into the stirring cavity; the blocking piece is arranged in the containing cavity and located between the inner shell and the water collecting tank, and the blocking piece is fixedly connected with the side wall of the outer shell. The fluidized bed precipitation device provided by the invention is high in precipitation rateand high in precipitation efficiency, and can provide quality guarantee for sewage treatment.

The invention discloses a wet electrostatic lampblack purifier which comprises a protection box. A cleaning cavity is formed in the protection box, a conveying box is fixed to the bottom inside the cleaning cavity, one end of the conveying box is connected with an air inlet pipe, the other end of the conveying box is connected with a high-pressure electrostatic purifier, installation plates are fixed to the two sides of the conveying box, a rotating plate is hinged to one side of each installation plate, the lower ends of the installation plates are rotationally connected with two parallel aircylinders, the tail ends of piston rods of the air cylinders are rotationally connected to the lower ends of the rotating plates, spraying pipes are fixed to one sides of the upper ends of the installation plates, bearing plates are fixed to the rotting plates, and multiple mist spray heads are arranged at the bearing plates at equal intervals. By means of the combination of the air cylinders, the rotating plates, the mist spray heads and the high-pressure electrostatic purifier, sufficient spraying for lampblack is achieved, the purifying efficiency and quality are ensured, use is convenient, and popularization is achieved.

The invention provides a water recovery control system used for a washing machine. The water recovery control system comprises a washing barrel, a sewage tank communicated with the washing barrel, a filter membrane separator arranged in the sewage tank, a water suction pump connected with the filter membrane separator, a circulating water inlet pipe communicated with the water suction pump and the washing barrel, and a draining pipe connected with the sewage tank and extending out of the system. A first solenoid valve is arranged on the draining pipe, an inclined plane is arranged at the bottom of the sewage tank, a draining port used for being connected with the draining pipe is formed in the low position of the inclined plane, a turbidity sensor is arranged on the sewage tank, and the first solenoid valve is controlled by the turbidity sensor. By the adoption of the water recovery control system, sewage obtained after rinsing is carried out can be purified and recycled for follow-up rinsing, and therefore water used for follow-up rinsing is saved.

The invention discloses a drilling mud formula and an automatic mud circulation purification device, and relates to the technical field of drilling mud. The mud specifically comprises mud raw materials, and the mud raw materials comprise, by weight, 1000 parts of clear water, 20 parts of bentonite, 4 parts of polyacrylamide, 4 parts of vegetable gelatin, 6 parts of potassium humate, 3 parts of sodium carboxymethyl cellulose, 3 parts of ferrochrome sodium lignin sulfonate, 4 parts of sodium carbonate, 4 parts of barite fine powder, 3 parts of dry sawdust, 4 parts of asbestos and 5 parts of polyacrylamide flocculant. The high-quality bentonite is selected, so that the slurry has the advantages of low relative density, low viscosity, small sand amount, small water loss, thin mud cake, strong stability, strong wall fixing capability, small rotation resistance of a drilling tool, high drilling rate, high slurry making capability and the like; the viscosity of the slurry can be increased by using sodium carboxymethyl cellulose, so that a thin film is formed on the surface of the soil layer to prevent the hole wall from peeling off, and the effect of reducing the water loss is achieved.

The invention discloses an oil fume separation and purification apparatus, comprising an oil fume cover body, an oil fume separation device and an electrostatic field device, wherein the oil fume separation device and the electrostatic field device are arranged in the oil fume cover body; the oil fume cover body is provided with an oil fume inlet at the bottom and an oil fume outlet at the top; oil fume is introduced from the oil fume inlet, sequentially passes through the oil fume separation device and the electrostatic field device and then is discharged from the oil fume outlet; a first airoutlet channel is arranged between the oil fume separation device and the electrostatic field device, and oil fume is gathered in the first air outlet channel after being separated by the oil fume separation device and then is led to the electrostatic field device; and a UV lamp tube is arranged in the electrostatic field device. The oil fume separation device is arranged for effective separationof oily water and smoke in the oil fume; the electrostatic field device and the UV lamp tube are arranged, so peculiar smell in the oil fume is effectively removed while dust collection and purification are effectively conducted on the separated oil fume; and the oil fume separation and purification apparatus has the beneficial effects that pollution of the oil fume to the atmosphere is reduced,and the air quality of a kitchen is guaranteed.

The invention discloses a chemical wastewater filtering and purifying device, belongs to the technical field of chemical environment-friendly treatment equipment, and solves the problem of poor filtering and purifying effects of existing chemical wastewater treatment. According to the technical scheme, the chemical wastewater filtering and purifying device comprises a device box body, a liquid inlet is formed in the device box body and penetrates through the device box body, the liquid inlet is connected with a filtering roller, a water inlet pipe is arranged below the filtering roller, the end, away from the filtering roller, of the water inlet pipe is connected with a first filtering box body, the first filtering box body is connected with a water passing pipe, the end, away from the first filtering box body, of the water passing pipe penetrates through a second filtering box body, the second filtering box body is connected with a water passing pipe, the end, away from the second filtering box body, of the water passing pipe penetrates through a third filtering box body, the third filtering box body is connected with a water passing pipe, the end, away from the third filtering box body, of the water passing pipe penetrates through a fourth filtering box body, and a first connecting water pipe is arranged in the fourth filtering box body; The filtering and purifying effects are good.