216results about How to "Create pollution" patented technology

The invention relates to a multifunctional soil conditioner for yellow sand soil and a preparation method thereof, and is characterized in that the soil conditioner is a granular fertilizer and comprises a core layer and a coating layer wrapping the core layer, and the mass ratio of the core layer to the coating layer is (3-5): (60-85); wherein the core layer is prepared from the following raw materials in parts by weight: 25 to 30 parts of ground phosphate rock, 15 to 25 parts of insoluble potassium mineral powder, 5 to 10 parts of humic acid and 15 to 20 parts of microbial agent; the component of the coating layer is modified sodium alginate. The modified sodium alginate outer envelope prepared by the invention has a uniform pore structure, and can store water, provide a microenvironment required by reproduction of beneficial microorganisms in soil, increase the content of the beneficial microorganisms in the soil and gradually decompose and release the phosphorus-potassium fertilizer.

The automatic ash removal equipment comprises a furnace body, a furnace bottom plate is arranged below the furnace body, a waste discharge port used for discharging dust or waste gas in the furnace body is formed in the furnace bottom plate, an ash removal device is arranged on one side of the waste discharge port, and an ash removal device is arranged on the other side of the waste discharge port. The ash removal device partially extends into the waste discharge port to automatically clean accumulated ash on the inner wall during ash removal, and after ash removal is completed, the ash removal device is separated from the waste discharge port, so that dust or waste gas can be discharged from the waste discharge port. When the ash cleaning device of the automatic ash cleaning equipment is used for cleaning ash, the ash cleaning device can extend into the waste discharge port to automatically clean accumulated ash on the inner wall of the waste discharge port on the furnace bottom plate, so that the influence on the growth quality of monocrystalline silicon and the environment in the furnace chamber due to blockage caused by dust accumulation on the inner wall of the waste discharge port is avoided; and after dust removal is completed, the dust can be separated from the waste discharge port, so that the dust removal effect of the dust removal device is prevented from being influenced by dust accumulation at the waste discharge port for a long time.

The invention discloses an adenosine kinase mutant with high thermal stability and application thereof, and relates to the technical field of enzyme engineering, and the adenosine kinase mutant with high thermal stability is obtained by performing point mutation on the 253rd site or the 82nd site of adenosine kinase as shown in SEQ ID NO: 1. According to the invention, an adenosine kinase mutant is used as a biocatalyst in an enzyme catalysis manner; the method is used for enzymatic synthesis of 5 '-adenylic acid, adenosine and adenosine triphosphate react to prepare adenylic acid, generation of by-products and impurities in the reaction is reduced to a certain extent, production efficiency and purity of adenylic acid are improved, reaction conditions are mild in preparation in an enzyme catalysis mode, pollution to the environment is avoided, and the method is suitable for industrial production. And the high-thermal-stability adenosine kinase mutant is applied to adenylic acid preparation, so that the preparation efficiency and yield of adenylic acid can be improved.

The present invention discloses a method for solidifying dredged sludge by using biological carbonization activated magnesium oxide technology, and belongs to the technical field of soil solidification. In the present invention, urease-producing bacteria are first used to prepare a pre-hydrolyzed urea solution, and then the pre-hydrolyzed urea solution and an activated magnesium oxide solidifying agent are separately and evenly mixed into dredged sludge with a certain water content according to a certain dosage, stirred to form a slurry, and the slurry is filled in a designated site or model and fully maintained. The present invention greatly reduces the construction cost and improves the feasibility and efficiency of solidification treatment of dredged sludge with high water content by introducing the technology of carbonization of urea solution pre-hydrolyzed by urease-producing microorganisms and activated magnesium oxide solidifying agent.

The invention discloses a lignin degradable insect trapping plate and a preparation method thereof. The lignin degradable insect trapping plate comprises a plant long fiber substrate, a lignin waterproof barrier layer and degradable insect sticking glue, the plant long fiber base plate is paperboard or lamination base paper made of at least one of coniferous wood plant fibers, broadleaf wood plant fibers, bamboo pulp fibers, bast fibers and seed wool fibers; the lignin waterproof barrier layer comprises the following components in parts by weight: 80-95 parts of waterproof paint and 5-20 parts of lignin. The insect trapping board prepared by the invention can be degraded in the natural environment, does not cause pollution to the environment, utilizes natural brown of lignin to trap flies and mosquitoes, has an outstanding insect trapping effect, has relatively good strength and waterproofness, and is simple in preparation process and low in cost.

The utility model discloses a turnover placing rack for noodle production in the technical field of noodle processing, which comprises a base, an electric push rod is fixedly mounted on the inner side of a mounting groove, a connecting rod is slidably connected to the inner side of the mounting groove in a penetrating manner, and the bottom end of the connecting rod is fixedly connected with the top output end of the electric push rod. The surface of the connecting rod is fixedly sleeved with a connecting block, the surface of the connecting rod is provided with a plurality of connecting blocks and hanging frame assemblies, and the connecting blocks and the hanging frame assemblies are installed on the surface of the connecting rod in a spiral rising mode. And after the length of the hanging rod is adjusted, the amount of noodles hung on the surface of the hanging rod is increased, and then the turnover efficiency is improved.

The utility model discloses a biogas pretreatment device for a biogas generator set, which comprises a bottom plate, a desulfurization tank is arranged on one side above the bottom plate, a gas inlet is arranged on one side of the desulfurization tank, a gas outlet is arranged on the other side of the desulfurization tank, a water outlet is arranged below the desulfurization tank, and a gas outlet is arranged on the other side of the desulfurization tank. A fixing ring is mounted on the inner side of the desulfurization tank, and a baffle plate is fixed below the fixing ring; according to the biogas pretreatment device for the biogas generator set, through the arrangement of the fixing ring, the baffle plate, the connecting plate, the first bolt and the spraying frame, the baffle plate is mounted above the spraying frame through the first bolt in the using process of the device, gas generated after the reaction of biogas and a sodium hydroxide solution impacts the baffle plate when passing through the baffle plate, and the gas is prevented from flowing into the spraying frame; water drops in the gas are left on the baffle plate, moisture in the gas is removed, the moisture is prevented from damaging the biogas pretreatment device and the biogas engine unit, and the heat value and the combustion efficiency of the biogas can be improved through dehydration.

The invention provides an anti-corrosion liquid film and a planting method for climate intelligent agriculture in a semi-arid windy desert area, and belongs to the technical field of desertification cultivated land control and desertification control. The anti-corrosion liquid film is prepared from humic acid, sodium alginate, carboxymethyl chitosan, polyethylene glycol, guar gum and water. The anti-corrosion liquid film has good anti-corrosion and soil moisture preservation capacity, can promote soil to form aggregates and improve the soil structure, has good film forming performance and tensile strength, is easy to degrade and does not cause pollution to the environment. After previous crops are harvested, fertilization, ridging and grass seed sowing are carried out, then the anti-corrosion liquid film is sprayed, and the crops are planted in spring according to the soil moisture content. By means of the method, the emergence rate and yield of desertification farmland crops can be increased, meanwhile, climate environment changes are effectively coped, the soil organic matter content and the soil porosity are increased, economic benefits can be increased while wind prevention and sand fixation are achieved, and the purposes of improving desertification degradation, recarburizing, fertilizing and disaster prevention and reduction are achieved.

The invention relates to the technical field of water conservancy and hydropower, and discloses a drilling device and method for water conservancy and hydropower construction.The drilling device comprises two transverse frames arranged in parallel, movement mechanisms are connected to the tail ends of the two sides of each transverse frame, and corresponding operation instructions can be input on a remote control device, so that drilling work is completed; in addition, 360-degree drilling adjustment can be achieved during drilling, drilling in multiple directions is achieved, the drilling range is wide, crawler belt movement is adopted in the moving process, movement is reliable, and movement during drilling is prevented; according to the drilling device, extraction can be achieved during drilling, dust generated in the drilling process is absorbed, and the situation that a large amount of dust is generated during drilling, and consequently environment pollution and harm to bodies of constructors are caused is prevented; adjustment of different heights can be achieved during drilling, drilling at different height positions is achieved, adjustment of the balance weight can be achieved during drilling, and tipping caused by adjustment of the drilling position is prevented.

The utility model discloses a pressurized reverse circulation extraction device for active ingredients of natural products, and particularly relates to the field of natural pharmaceutical chemistry, which comprises a crushing box, a sealing plate is movably connected above the crushing box, a grip is fixedly connected above the left side of the sealing plate, and the right side of the grip is fixedly connected with the right side of the crushing box. The front end and the rear end of the smashing box are fixedly connected with driving assemblies. The driving assembly comprises a driving rod, a user can drive a transmission rod and a reciprocating lead screw to rotate through a driving motor in the driving assembly, a movable block drives a fixing assembly and a smashing roller to circularly roll in the smashing box in a reciprocating mode, plant raw materials on a filter plate are rolled and smashed, and the plant raw materials are filtered through the filter plate, so that the plant raw materials are smashed. The plant raw materials which are not completely crushed can be further crushed by the crushing rollers, and the situation that when existing equipment is used for crushing plants, the plants are not sufficiently crushed, and consequently the consumption amount of a needed dissolving agent is increased is avoided.

The invention discloses a glass fiber reinforced PVC cable protection tube extrusion molding machine head and a molding method, and relates to the technical field of extrudes.The glass fiber reinforced PVC cable protection tube extrusion molding machine head comprises a first shell, a core rod and a second shell, the core rod is installed on the inner side of the first shell, embedding rods are symmetrically installed at the top and the bottom of the first shell, and the second shell is located on the outer side of the core rod; and embedded connection mechanisms are symmetrically arranged at the top and the bottom of the shell II. When plastic in the first shell and the second shell needs to be cleaned, a connecting rod is pulled upwards to drive an inserting rod to move upwards, so that the inserting rod is pulled out of an embedding hole in an embedding rod, the embedding rod is conveniently pulled out of an embedding frame, the first shell and the second shell are separated, and the cleaning efficiency is improved. Plastic in the first shell and the second shell can be conveniently cleaned and recycled, waste caused by long-time carbonization of the plastic in the first shell and the second shell at the high temperature is avoided, and meanwhile pollution to materials heated and extruded next time due to the fact that carbonized plastic is not cleaned is also avoided.

The utility model discloses a cigarette equipment dustproof protective cover which comprises cigarette equipment (1), the back face of the cigarette equipment (1) is provided with a waste smoke outlet (2), one side of the back face of the cigarette equipment (1) is connected with a protective cover (3) in a hinged mode, the top of the protective cover (3) is provided with a receding opening (4), and the receding opening (4) is opposite to the waste smoke outlet (2) in position. A protective cover limiting assembly is arranged on the other side of the back face of the cigarette equipment (1). The dust blocking device can effectively block dust and prevent the dust from flying to pollute the surrounding environment and affect the health of people.

The utility model discloses a cooked food conveying device with cleaning and drying functions, and relates to the technical field of food processing equipment, the cooked food conveying device comprises four supporting legs, a transmission mechanism is arranged at the tops of the supporting legs, and the transmission mechanism comprises a first motor, a first roll shaft and a first rotating rod; fixing blocks are installed at the tops of the two supporting legs on the right side, a second roller shaft is installed between the two fixing blocks, a second rotating rod is rotatably installed on the outer surface of the second roller shaft, and the surface of the first rotating rod and the surface of the second rotating rod are connected with a conveying belt in a sleeved mode. Cooked food can be limited by the blocking belt and the blocking plate in the conveying process, the cooked food is prevented from moving in the conveying process, and the situation that cooking liquor carried by the conveyed cooked food pollutes the conveying belt and affects sanitation of the device can be prevented by pasting waterproof films on the surface of the conveying belt and the surface of the blocking plate.

The invention provides an efficient synthesis method of biomass calcium formate. Biological calcium carbonate is ground into powder, the powder and formic acid are subjected to a chemical reaction, under the action of organic matter, generation of a large amount of regular orthogonal-beta calcium formate is induced, the crystal form is P41212, and the yield of calcium formate is greatly increased. The method for synthesizing calcium formate provided by the invention has the advantages of simple and easily available raw materials, low production cost, high synthesis yield, catalyst induction of the raw materials and the like, the synthesis process is efficient and environment-friendly, no pollutant is generated, and the economic profit and sustainability of the process are further improved. The synthesis process does not pollute the environment, a by-product carbon dioxide is generated in the reaction process, and the carbon dioxide can be reused. The generated calcium formate is of a very regular octahedral structure, and has important reference significance for efficiently synthesizing the calcium formate in industry.

The utility model relates to the technical field of gravure printing machines, and discloses an impressing device of a gravure printing machine, which comprises a mounting frame and impressing roller bodies arranged on the upper side and the lower side in the mounting frame, and further comprises transposition structures arranged on the left side and the right side of the mounting frame and used for adjusting the impressing roller bodies on the upper side and the lower side, fixing grooves are formed in the surfaces of the left side and the right side of the mounting frame correspondingly, and connecting shafts are fixed to the left side and the right side of the impressing roller body correspondingly. According to the utility model, the double impressing rollers are arranged, so that the device has a transposition function, the positions of the impressing rollers can be exchanged when the impressing roller positioned below needs to be cleaned, the impressing work can be directly and continuously carried out on a printed product after the exchange, the working efficiency is improved, and the device also has a receiving function; and when a worker cleans the impressing roller, generated dust and other dirt are received and collected, so that a printed product below is prevented from being polluted, and the practicability of the device is effectively improved.

The fresh milk filtering device comprises a fresh milk barrel, a mounting frame is placed in the fresh milk barrel, a supporting net is fixedly connected to the bottom of the inner wall of the mounting frame, a filtering pad is placed on the upper surface of the supporting net and located in the mounting frame, and a viewing opening penetrating through the fresh milk barrel is formed in the side wall of the fresh milk barrel; the viewing opening is located below the mounting frame, and a transparent protection plate is arranged in the viewing opening. According to the scheme, when the fresh milk barrel is used, fresh milk squeezed into the fresh milk barrel can be filtered in time through the filtering pad, when foreign matter such as hair enters the fresh milk barrel, the foreign matter such as the hair can be filtered in time through the filtering pad, meanwhile, people can conveniently find the falling foreign matter such as the hair, the people can replace the filtering pad in time, and the working efficiency is improved. The fresh milk in the fresh milk barrel is prevented from being polluted by foreign matters such as hair, so that the quality and sanitary condition of the fresh milk can be improved, and the fresh milk barrel is more beneficial to actual use.

The utility model provides a waste heat boiler tail gas recycling device, and relates to the technical field of boiler tail gas treatment. The waste heat boiler tail gas recycling device comprises a waste heat boiler, a preheater and a pre-cooling tank, the waste heat boiler is connected with the preheater through a steam pipeline, the preheater is connected with the pre-cooling tank through a first condensate water pipeline, the pre-cooling tank is connected with the waste heat boiler through a second condensate water pipeline, and the waste heat boiler is connected with the pre-cooling tank through a steam pipeline. The waste heat boiler is further connected with a tail gas inlet pipe and a first tail gas outlet pipe, the other end of the first tail gas outlet pipe is connected with the pre-cooling tank, the pre-cooling tank is further connected with a second tail gas outlet pipe, and a filter is arranged between the first tail gas outlet pipe and the pre-cooling tank. The waste heat recovery rate can be increased, and the steam generation amount is increased.

This invention relates to a zero-residue multi-stage deflagration fracturing method and system, addressing the problems of existing deflagration fracturing devices, such as well-water pollution, failure to achieve the expected fracturing effect, and low efficiency. The multi-stage deflagration fracturing method includes: Step 1: Preparing the deflagration fracturing charge, central tube, and guide plug in the deflagration fracturing system using a combustible material that is soluble in chloride ions; Step 2: During operation of the deflagration fracturing system, a detonator ignites the central tube and the deflagration fracturing charge; Step 3: The central tube burns, the deflagration fracturing charge deflagrates, and the guide plug burns simultaneously, thus performing multi-stage deflagration fracturing; Step 4: After deflagration fracturing is completed, the residue from the central tube, deflagration fracturing charge, and guide plug falls into the well water, where it dissolves completely, achieving zero residue. To achieve the above method, this invention also proposes two zero-residue multi-stage deflagration fracturing systems.

The invention discloses a vacant area filling planting method for long Wuhua beans, and belongs to the technical field of planting, the method comprises the following steps: (1) sowing: deeply plowing the land by using a deep plowing machine, selecting pest-free and damage-free long Wuhua bean seeds, and sowing by using a drill sowing mode; (2) root system management: performing root cutting treatment on lateral roots 15-20 days after seedlings of the long Wuhua beans emerge, applying secretion-promoting particles to the surface of the soil after the root cutting treatment, and then ploughing the secretion-promoting particles into the soil; (3) later-period management: watering the long Wu beans, managing diseases and insect pests, and harvesting or returning the long Wu beans to the field after the long Wu beans are planted for 3 months, so that the problem that harmful carboxylic acid is accumulated due to promotion of root secretion of the long Wu beans is solved.

The utility model discloses a sewage treatment device for producing an environment-friendly cosmetic brush, which belongs to the technical field of sewage treatment and comprises a device box, the side surface of the device box is connected with a fixed seat, a lifting mechanism is connected in the fixed seat and comprises an electric push rod, the electric push rod is connected in the fixed seat, and the electric push rod is connected in the fixed seat. The top end of the electric push rod is connected with a supporting plate, and a moving groove is formed in the supporting plate. According to the sewage treatment device for production of the environment-friendly cosmetic brush, through the arrangement of the device box and the collection box, when an electric push rod pushes a supporting plate and a movable clamping rod to rise, the movable clamping rod can continue to move upwards and drive a filter plate to turn over, so that the device can automatically discharge sundries on the filter plate, and the situation that when the device is used for filtering, the sundries are damaged is avoided. The situation that a worker needs to use a cleaning tool to clean the filter plate when the filter plate is blocked by suspended matters is avoided, so that the cleaning difficulty is reduced, and the hand fatigue of the worker is reduced.

The present invention provides a method for processing printed circuit boards, comprising: preparing an acidic oxidizing agent solution, wherein the acidic oxidizing agent solution comprises ferrous oxide, nitric acid, and hydrochloric acid; placing the printed circuit board in the acidic oxidizing agent solution and controlling the immersion temperature and immersion time; and removing the printed circuit board and cleaning it. This processing method is highly efficient and effective, reducing surface corrosion and environmental pollution.

The utility model discloses liquid medicine filling equipment which comprises a filling equipment main body, the bottom end of the filling equipment main body is fixedly connected with a filling nozzle, the top end of the filling equipment main body is fixedly connected with a liquid storage tank, the top end of the filling equipment main body is fixedly connected with hydraulic equipment, and the hydraulic equipment is fixedly connected with a liquid storage tank. A quantitative discharging device is arranged at the top end of the interior of the filling equipment body, liquid medicine in a liquid storage box enters a discharging groove through a liquid inlet, hydraulic equipment is started and drives a movable rod to move downwards, and when the movable rod moves downwards, a soft rod is driven to move downwards; the universal shaft rotates to drive the soft rod to move in the limiting rail, then the soft rod drives the discharging wheel to rotate, the discharging wheel rotates in the fixed pipeline, liquid medicine located in the discharging groove is conveyed to the filling nozzle for filling, the quality of the filled liquid medicine can be kept the same every time filling is conducted, and the using effect of the device is improved.

The present invention provides a method for manufacturing a bamboo-wood multilayer flame-retardant fireproof board, which belongs to the technical field of fireproof boards and solves the existing technical problems of poor anti-falling performance and inconvenience in taking and placing. A method for manufacturing a bamboo-wood multilayer flame-retardant fireproof board comprises a fireproof board body, wherein the fireproof board body comprises a bottom plate and a bamboo-wood panel, a base plate is pasted on the upper side of the bottom plate, a trapezoidal groove is provided on the base plate, a trapezoidal block is integrally formed on the bamboo-wood panel, the trapezoidal groove is slidably connected to the trapezoidal block, and the trapezoidal groove and the trapezoidal block are pasted by glue, a mounting block is fixed at the center of the bottom plate, and a mounting hole is provided on the mounting block that penetrates the fireproof board body. The present invention has the advantages of simplifying the process steps, improving the quality of the flame-retardant board and facilitating taking and placing.

The invention discloses a method for building a golf course by using a rice field, and belongs to the technical field of golf course construction, and the method comprises the following steps: S1, after rice is harvested, planning the golf course by using a non-planting period of a rice field, S2, laying sleepers above a pipe network and a pipe channel of a rice field irrigation system, S3, laying golf blankets on the sleepers, and S4, building a golf course. S4, setting exercise target points at different distances in the area where the blanket is laid, S5, setting a putting green, a sandpit and other obstacle areas conforming to golf rules on the planned arena, and S6, setting facilities for users to use around the arena. The idle time and space of the rice field in the non-planting period are fully utilized, the rice field is converted into a golf field, the utilization rate of land resources is increased, idle waste of the land in the non-planting period is avoided, the land can play the value in different time periods, and the utilization rate of the land is increased. Effective combination of idle rice field land and sports land is realized.

The invention belongs to the technical field of glove manufacturing and discloses glove manufacturing equipment which comprises a glue box, the glue box is a part of the interior of a glue bearing mechanism, a moving mechanism is arranged on one side of the exterior of the glue bearing mechanism, and a hand mask is arranged on the side, close to the glue bearing mechanism, of the moving mechanism. A rotating mechanism is arranged between the hand film and the moving mechanism, a drying mechanism is arranged above the outer portion of the glue bearing mechanism, a turnover mechanism is arranged in the moving mechanism and the glue bearing mechanism, and a sleeve removing mechanism is arranged on one side of the outer portion of the glue bearing mechanism. Through the arrangement of the glue bearing mechanism and the rotating mechanism, gloves can be subjected to glue dipping, redundant glue liquid is spin-dried after glue dipping, the redundant glue liquid is collected in a unified mode, pollution to a production line is avoided, a hand mask can be rotated to a proper angle through the overturning mechanism, the hand mask is prevented from rotating by a bearing, and finally the glove removing mechanism is arranged, so that the production efficiency is improved. And a worker can take down and collect the glove more conveniently and quickly.

The present invention discloses a film laminating device for magnetic material processing and transmission, and relates to the technical field of magnetic material processing. The present invention comprises a conveying assembly; the conveying assembly comprises a base, a moving assembly is fixedly matched on the top of the base, and a reinforcing assembly is hingedly matched on the moving assembly; the reinforcing assembly comprises a vertical plate hingedly matched on the moving assembly, a U-shaped plate is fixedly connected to the bottom of the vertical plate, a cleaning roller is rotatably connected between the two opposite inner sides of the U-shaped plate, and an extension plate is symmetrically fixedly connected to one side of the U-shaped plate. The present invention cleans the magnetic block material through the reinforcing assembly, making the top of the magnetic block material cleaner, avoiding dust on the top of the magnetic block material that affects the firmness of the film laminating, and effectively improving the film laminating efficiency, and by controlling the movement of the rolling roller, the film on the top of the magnetic block material is pressed, so that the film is more firmly adhered to the top of the magnetic block material, and the film is prevented from falling off.

The application discloses an automatic cleaning device for ship anchor chain, which comprises a main frame and a self-collection cleaning mechanism. A clamping assembly for positioning and fixing is fixedly installed on the lower section of the longitudinal guide rod in the auxiliary frame, and a clamping assembly for positioning and fixing is slidably connected to the upper section of the longitudinal guide rod, and the two clamping assemblies are driven to move on the anchor chain in a peristaltic mode. Angle-adjustable screw propulsion assemblies are installed on the left and right frame bodies of the annular carrier in the clamping assembly, and are driven to move underwater. The self-collection cleaning mechanism is movably arranged in the frame of the main frame, and is rotated to clean the anchor chain. The automatic cleaning device for ship anchor chain is provided in a closed mode, so that the cleaning objects are prevented from being dispersed in seawater, the cleaning objects are concentrated and collected, the cleaned anchor chain is prevented from being newly polluted, and the cleaning device itself is prevented from being interfered.

The medical alcohol bottle comprises a storage bottle body, a bottle bottom is arranged at the bottom of the storage bottle body, an opening is formed in the top of the storage bottle body, and an annular side wall is arranged between the opening and the bottle bottom; a bottle cap is arranged at the position of the opening, a filtering device is arranged below the opening, the filtering device is a filtering net, filtering holes are formed in the filtering net, the diameter of the filtering holes is 0.2 micrometer, the number of the filtering holes is multiple, and the multiple filtering holes are evenly distributed in the filtering net. The material of the device is PET, and the material of the bottle cap is PE, so that the filtered sterile alcohol can be obtained only by opening the bottle cap and forcibly extruding the bottle body during use. The material is low in cost, can be recycled and reused, does not pollute the environment, and is convenient to use.

A negative pressure urine protein collector includes a barrel, a negative pressure suction device, and a rotary stirring device. A top wall is provided on one side of the top of the barrel, and a receiving cavity is provided on the upper side of the top wall. The negative pressure suction device includes a suction tube, a needle, and a vacuum tube. The upper end of the suction tube is located on the lower side of the top wall within the receiving cavity. The needle is connected to the upper end of the suction tube via a flexible tube. When aspirating urine, the needle pierces the rubber stopper of the vacuum tube. The rotary stirring device includes a stirring shaft and blades. The upper end of the stirring shaft extends into the bottom inner side of the receiving cavity of the barrel, and the blades are installed on the upper end of the stirring shaft. A stirring drive device is provided at the lower end of the stirring shaft. This invention, by placing a rotary stirring device at the bottom of the barrel, can fully stir the urine from the bottom. After stirring, the needle is inserted into the rubber stopper of the vacuum tube to draw the urine into the vacuum tube, improving detection accuracy, facilitating operation, and preventing pollution of the operating environment.

A purification water cup belongs to the technical field of drinking water filtration. The ultrafiltration assembly is arranged, the ultrafiltration assembly comprises a plurality of ultrafiltration filters, and each ultrafiltration filter is composed of a plurality of hollow fiber filter membranes, so that harmful substances such as heavy metals, pesticides and organic matters in water can be effectively removed; the ultrafiltration assembly is designed to be of a detachable structure, a plurality of ultrafiltration filters can be detached after use, the ultrafiltration filters can be cleaned due to the characteristics of the ultrafiltration filters, reuse is facilitated, and the use cost is effectively reduced; due to the structure that the ultrafiltration filter can be independently detached, the ultrafiltration filter can be washed and dried in the sun or dried at low temperature after being used, and bacteria are prevented from breeding in an internal humid environment; the ultra-filtration filter can be replaced independently through the structure that the ultra-filtration filter can be detached independently, a new ultra-filtration filter element is installed in the installation shell, sealed through the upper cover and then integrally installed at the bottom of the water storage shell, filtering can be conducted again, the whole filtering assembly does not need to be replaced, and the use cost is reduced.