201results about How to "Lower purchase cost" patented technology

The invention discloses a method for automatically controlling the thickness of an MABR biological membrane. The theoretical tail gas oxygen content O2out is calculated according to the oxygen transfer efficiency OTE of an MABR membrane assembly and the intake oxygen content O2in, wherein the oxygen transfer efficiency OTE of the MABR membrane assembly is equal to (O2in-FvO2out) / O2in; the oxygen reduction coefficient Fv is equal to (1-O2in) / (1-O2out); the theoretical tail gas oxygen content O2out is equal to 1 / [(1-O2in) / (1-OTE) O2in + 1]; monitoring the ammonia nitrogen concentration in the effluent treated by the MABR membrane module and the oxygen content in the tail gas; and adaptively adjusting the process according to the monitored ammonia nitrogen concentration and the oxygen content in the tail gas. According to the method and the device for automatically controlling the thickness of the MABR biological membrane, the thickness of the biological membrane can be automatically controlled, the energy consumption is reduced, and the sewage treatment efficiency is ensured.

A macrobrachium rosenbergii breeding method belongs to the technical field of shrimp breeding, and comprises the following steps: selection of parent shrimps: selecting a macrobrachium rosenbergii pseudo-female population introduced from Thailand as female shrimps, and stocking in a breeding pond A; screening domestic male groups which are robust in physique and are not carried by viruses, and stocking the male groups in the breeding pond B; thailand pseudo female shrimps and domestic male shrimps are subjected to cross breeding, and the domestic male shrimps (South Taihu No.3) are subjected to cross breeding with the Thailand pseudo female shrimps by virtue of relatively high low temperature resistance, so that the low temperature resistance of hybrid offspring is improved, and the current breeding situation of Thailand Macrobrachium macrobrachium offspring seeds in China is improved.

The invention discloses a treatment process of photovoltaic cell production wastewater, and relates to the technical field of industrial wastewater treatment. Comprising the following steps: treating dilute acid and dilute alkali through a reclaimed water recovery membrane system to obtain first produced water and reclaimed water concentrated water; treating the concentrated acid wastewater and the reclaimed concentrated water through a fluorine-calcium crystallization system to obtain defluorinated concentrated water and calcium fluoride crystals; treating the RO concentrated water and the defluorinated concentrated water by a hardness removal recycling system to obtain hardness-removed concentrated water and second produced water; treating the concentrated alkali wastewater through an alkali recovery membrane system to obtain purified alkali and alkali-removed concentrated water; hardness-removed concentrated water and alkali-removed concentrated water are treated by a comprehensive physicochemical system, and then are sequentially treated by a high-power concentration membrane system and a zero-discharge crystallization system to obtain solid wastes. The photovoltaic cell production wastewater treatment process provided by the invention achieves an economical and feasible zero-emission solution.

The utility model relates to the technical field of industrial feeding, in particular to a manipulator assembly with a double-shaft adjusting function, which comprises a base, a rotating wheel disc is mounted in the middle of the upper surface of the base, one side of the rotating wheel disc is meshed with a first rotating gear, and the top of the first rotating gear is rotatably connected with a first driving motor. The bottom of the first driving motor is sleeved with a connecting plate, a stand column is installed on the top of the connecting plate, a servo motor is installed in the top end of the stand column, and a second rotating gear is installed on one side of the servo motor. The improved mechanical arm assembly has the multi-angle machining capacity, can be flexibly adjusted in different angles and directions, achieves more complex and diversified machining operation, is provided with the clamp assembly with the flexible adjusting function, avoids the problem that different clamps need to be repeatedly replaced when components of different specifications are machined, reduces the downtime, and improves the machining efficiency. And the efficiency and the productivity of the production line are improved.

The utility model provides an air purification filter, relates to the air purifier field, including purifier body and box door, inside the purifier body is provided with filter element, the periphery of filter element is provided with dust screen, one side of dust screen is provided with drum, the other side of dust screen is provided with hair brush through mounting rack, the box door is provided with the box door. Impurities on the surface of the dustproof net can be brushed off through the cooperation of the brush rotary drum, the fallen impurities can be sucked into the collecting box to be stored through the cooperation of the fan, the air pipe and the suction head, and therefore the self-cleaning effect is achieved. Through the design, the time for manual cleaning can be saved, the device is worry-saving and convenient, the service life of the filter element is prolonged, the purchase cost of a user is reduced, the good purification effect is guaranteed, and the practicability of the device is improved.

The invention relates to the field of artificial intelligence shopping, in particular to a shopping mall system of an intelligent search interest recommendation algorithm, which comprises a registration and login module used for selecting a login identity and a login mode and inputting login information; the factory cloud supply module is used for updating and deploying the commodity supply information in real time; the merchant service module is used for managing commodity orders, counting service of buyers and analyzing sold commodities; the promotion and distribution module is used for carrying out advertisement putting and promotion activity promotion based on a digital transmission channel, and is also used for helping merchants to carry out management setting on distributors and formulate distribution levels, regional distribution and shareholder bonuses; the financial module is used for providing balance and points of shop members for merchant users and providing commission calculation and commission withdrawal; according to the invention, the enterprise operation efficiency is improved, the cost is reduced, the brand influence and market competitiveness are improved, and an efficient, intelligent and integrated business management system is realized.

The utility model discloses test equipment for research and development of a numerical control machine tool cutter, which is applied to the field of research and development of cutters and comprises a base, and supports are fixedly mounted at two ends of the top of the base. When the service life of the cutter needs to be tested or the performance of the cutter needs to be tested, an object to be tested is placed between the two fixing blocks, then the two rotary knobs I are rotated in sequence, so that the object to be tested is clamped and fixed, then the air cylinder II is operated, and the hardness testing head is driven to move longitudinally by the air cylinder II to test the hardness of the cutter. Meanwhile, the rotating motor is operated, rotation of the cutter is achieved, the cutter grinds and cuts the tested object, performance testing of the cutter is achieved, the service life of the cutter can be calculated through multiple times of grinding and cutting of the cutter and the tested object, and convenience is brought to research, development and testing of the cutter.

The utility model relates to the technical field of oil cylinders, and particularly discloses an oil cylinder sealing performance testing device which comprises a rack, a detection pool is arranged on the upper surface of the rack, two hydraulic motors are fixedly connected to the inner wall of the rack, two sliding grooves are formed in the inner wall of the rack, the inner wall of each sliding groove is connected with a sliding block in a sliding mode, and the sliding blocks are arranged on the upper surface of the rack. The front faces of the sliding blocks are jointly and fixedly connected with a movable supporting plate, the back face of the machine frame is fixedly connected with an oil conveying pump, the back face of the machine frame is fixedly connected with an output pump, the oil cylinder to be detected is immersed in detection liquid, the leakage condition of the oil cylinder can be observed more accurately, and due to the fact that the detection liquid can permeate into tiny cracks or holes, the detection accuracy is improved. Therefore, potential leakage points can be found more easily, whether the oil cylinder leaks or not can be judged more visually by observing bubbles in the detection liquid, the misjudgment situation caused by visual errors or misjudgment can be reduced through the method, the oil cylinder is immersed in the detection liquid for detection, and the detection time can be shortened.

The utility model relates to the technical field of printing machinery, and discloses a printing machinery rapid cleaning device which comprises a workbench, a control panel is installed on the right side of the workbench, a printing plate is arranged on the top of the workbench, a pull rod is fixedly connected to the right side of the printing plate, and fixing frames are fixedly connected to the two sides of the top of the workbench. The device comprises a fixing frame, guide blocks are slidably connected to the interior of the fixing frame, transverse rods are fixedly connected to the opposite faces of the guide blocks, a handle is fixedly connected to the ends, away from the fixing frame, of the guide blocks, a scraper is fixedly connected to the surface of the transverse rods, and L-shaped plates are fixedly connected to the front end and the rear end of the top of the fixing frame. According to the rapid cleaning device for the printing machine, through the arrangement of the guide block, the cross rod, the handle, the sliding rod and other structures, the cleaning device can conduct cleaning in the printing process, the time for halting to replace a plate is shortened, the production efficiency is improved, the purchase and maintenance cost is low, and the use cost is reduced.

The utility model belongs to the technical field of garden landscapes, and discloses a vertical ecological environment-friendly garden landscape frame which comprises a bottom plate, a supporting rod is fixedly arranged on the upper surface of the bottom plate, a plurality of placing plates are distributed on the side wall of the supporting rod in an array mode, and the multiple placing plates are arranged on the side wall of the supporting rod in a sleeving mode; the multiple placement plates are slidably connected with the supporting rod, placement grooves are formed in the upper surfaces of the multiple placement plates, multiple water leakage holes are formed in the inner bottom walls of the multiple placement grooves in a penetrating mode, and an adjusting assembly used for adjusting the placement plates is arranged on the supporting rod. The method has the effect of reducing the cost.

The present invention discloses a feeding device for aquaculture, comprising: a feeding tank; a first rotating shaft, the upper part of which is located in the feeding tank, a spiral is arranged at the lower part, a first gear is arranged at the bottom, and a stirring blade is arranged on the part located in the feeding tank; a material guide tank, the bottom of the first rotating shaft passes through the bottom of the material guide tank, the spiral on the first rotating shaft is located in the material guide tank, and the first gear is located below the material guide tank; a second rotating shaft, the middle part of which is provided with a second gear, and both ends are respectively provided with spirals; two material guide cylinders, the two ends of the second rotating shaft are respectively located in the two material guide cylinders, the two material guide cylinders are respectively connected to the material guide tank, and the other end is respectively provided with a second discharge port; a frame, which is U-shaped and a floating bag is arranged at the bottom; a third rotating shaft, which is rotatably connected with the frame, a third gear is arranged in the middle part of the third rotating shaft, and a propeller is arranged at both ends of the third rotating shaft. The present invention can drive multiple rotating shafts to rotate through a driving device, so that the cost is reduced.

The present invention relates to the technical field of ring grinding processing, and specifically to a rolling bearing ring processing device and method; the device comprises a machine body, wherein an installation groove is provided at the upper end of the machine body; a feed port connected to the installation groove is provided at one side of the machine body; a mounting disk is rotatably connected in the mounting groove; a mounting plate fixedly connected to the machine body is provided above the mounting disk; a U-shaped groove is provided on the outer ring wall of the mounting disk; the present invention provides a grinding groove at the lower end of the mounting plate, so that when the mounting disk pushes the ring to the first grinding groove and the second grinding groove, the transmission rod in the first grinding groove can grind the end face of the ring through the grinding disk, and then the inner ring grinding unit in the second grinding groove can grind the inner ring wall of the ring. On the one hand, there is no need to clamp and switch the ring, thereby reducing the influence of positioning errors and improving the accuracy and matching accuracy of the ring processing. On the other hand, the time consumed by clamping and switching is reduced, thereby improving the production efficiency of the ring grinding processing.

The utility model discloses a lathe automatic feeding device which comprises a base, a stock bin mechanism and a clamping mechanism, a limiting seat is installed on the base, a through groove is formed in the limiting seat, the stock bin mechanism is arranged on the limiting seat, the through groove is close to the stock bin mechanism, a feeding air cylinder is installed on the base, and an output shaft of the feeding air cylinder is fixedly connected with a connecting plate. The clamping mechanism comprises a lead screw assembly and two opposite and symmetrical sliding seats, the lead screw assembly is located at one end of the base, the sliding seats are in sliding connection with the lead screw assembly, a clamping area is formed between the two sliding seats, and the lead screw assembly is located at the other end of the base. One end of the through groove is close to the clamping area, one side of the sliding base is rotationally connected with a set of idler wheels, and the idler wheels are located in the clamping area. The automatic feeding device of the lathe is simple in structure and low in purchase and installation cost.

This invention relates to a tunnel lining inspection device, comprising a connecting base, a multi-axis drive bracket connected to the connecting base, and a detection module mounted on the multi-axis drive bracket. The detection module includes a connecting plate, a mounting plate disposed on the connecting plate, an adaptive mechanism disposed between the connecting plate and the mounting plate for facilitating the device to adapt to uneven surfaces, a caster wheel fixedly connected to the side wall of the mounting plate away from the connecting plate, and a detection radar fixedly connected to the side wall of the mounting plate away from the connecting plate. This invention features a simple structure, convenient operation, and facilitates tunnel lining inspection by construction personnel. The equipment has a simple structure and low cost, reducing the purchase cost for construction parties.

The present invention relates to a method, device, system, equipment and medium for simultaneously transmitting different types of audio, the method comprising collecting original audio data; processing the original audio data to obtain a first audio signal and a second audio signal of different types; transmitting the first audio signal to a first signal processing device, transmitting the second audio signal to a second signal processing device, the first signal processing device is different from the second signal processing device, and the first signal processing device transmits the first audio signal to the second signal processing device. The advantages are that dual signals are sent to a mixing device through a single device, which reduces equipment stacking, improves stability, reduces failure rate, reduces maintenance and operation difficulty, and reduces purchase cost and use cost; the dual signals do not affect each other, achieving the effect of efficient transmission; on-site wiring is simple, with fewer types of cables, making the site more concise.

The utility model discloses a repair bar setting device, which comprises an MCU (Microprogrammed Control Unit) main control circuit used as a main processing center of equipment; the display circuit is used for displaying key information generated by man-machine interaction or interaction between equipment; the repair bar equipment interface circuit is used for communicating and connecting with external repair bar equipment; the data storage circuit is used for storing related setting parameter data; the key and buzzer circuit is used for realizing man-machine interaction operation and providing operation feedback; and the power management circuit is used for managing power supply and battery charging of the equipment. According to the repair bar setting device, by simulating a battery form and enhancing a setting interface, the operation convenience and practicability are remarkably improved, the maintenance cost of a mobile phone is reduced, man-machine interaction is optimized by integrating a display screen and functional keys, the setting efficiency is improved, the programmability of the MCU main control circuit provides flexibility for equipment customization, and the repair bar setting device is suitable for popularization and application. Therefore, the mobile phone maintenance tool is economical and efficient.

The utility model relates to a soybean double-seedling belt precision seeding unit and a seeder, the seeding unit comprises a unit frame, a seeding disc, a seed sowing device and a press wheel, the seeding disc is arranged on the unit frame and is used for single-row ditching or double-row ditching; the seed-metering device is mounted on the single-body frame, is positioned above the seeding disc and is used for performing single-row or double-row seeding in a groove formed in the seeding disc; and the press wheel is mounted on the single body frame, is positioned on the rear side of the seeding disc and is used for covering soil on the sown groove. The air-suction type double-seedling-belt seeding monomer has the beneficial effects that the structure is simple, the design is reasonable, two planting modes of corn single-row planting and soybean double-row planting are realized by replacing parts, so that the purchase cost of a machine is reduced, the use efficiency of the machine is improved, and the defect that the conventional monomer cannot meet the requirements of two planting agriculture at the same time is overcome.

The utility model provides a telescopic ditching and cleaning machine, which comprises a rack assembly, a transmission assembly and a soil digging assembly, the soil digging assembly is fixedly connected on the rack assembly, the transmission assembly is connected between the soil digging assembly and the rack assembly, the rack assembly comprises a telescopic cylinder, a suspension bracket, an inner rack, an outer rack and land wheels, the suspension bracket is fixedly connected on the outer rack, and the inner rack is connected with the outer rack through the transmission assembly. The inner rack is nested in the outer rack, one end of the telescopic cylinder is connected with the outer rack, the other end of the telescopic cylinder is connected with the inner rack, and the land wheel is detachably connected with the outer rack; the soil digging assembly comprises a gear box, a chain, a chain wheel and a soil digging cutter head, the power output shaft is connected with the chain wheel, and the soil digging cutter head is detachably connected with the gear box. The furrow cleaning machine is clean and tidy in furrow cleaning, high in efficiency and capable of cleaning furrows, ditching and fertilizing, the soil digging cutter head with narrow axial width and large radial diameter is installed for ditching operation, the soil digging cutter head with wide axial width and small radial diameter is installed for furrow cleaning operation, and the machine purchasing cost of farmers is reduced.

The present invention discloses a high-precision, low-cost, equal-wall-thickness single-screw pump hollow rotor forming device and process, comprising a forming mold, a pressure mechanism, a seamless steel pipe and a feeding mechanism, wherein the forming mold comprises an upper mold and a lower mold, a lower slide seat and an upper slide seat are installed on the upper side of the pressure mechanism, and the upper slide seat is located on the upper side of the lower slide seat, the lower mold and the upper mold are respectively fixed on one end of the lower slide seat and the upper slide seat close to each other, a rack arranged along its transverse length direction is fixed on one side of the feeding mechanism, a clamping mechanism is slidably connected to the upper end of the feeding mechanism, a second servo motor is fixed to the upper end of the base of the clamping mechanism, a gear is fixed to the output shaft end of the second servo motor, the gear and the rack are meshed for transmission, and a clamping claw for clamping the seamless steel pipe is rotatably connected to one side of the clamping mechanism. The raw materials of the present invention are widely available and low in price, the equipment requirements are simple, and the process links are few, which can greatly reduce the processing cost of the hollow rotors with thick walls such as single-screw pumps.

The invention relates to the related technical field of material testing, in particular to a tensile machine for screw production, which comprises a supporting strip, a base is fixedly connected to the upper surface of the supporting strip, an operation table is fixedly connected to the upper surface of the base, and a protection box mechanism is arranged on the upper surface of the operation table. And a self-adaptive fixing mechanism is arranged on the surface of one side of the protection box mechanism. According to the tensile machine for screw production, through the arrangement of the self-adaptive fixing mechanism, when a screw needs to be detected, clamping connection is conducted on a clamping groove in the self-adaptive fixing mechanism, and a rotating groove is rotated to move up and down, so that a first rotating column, a second rotating column and a fixing block are driven to fix the screw for a subsequent tensile test; through the arrangement, the self-adaptive fixing mechanism can fix screws of different specifications in a self-adaptive manner, and an operator can quickly fix the screws on the tensile machine, so that the preparation work time is shortened, and the efficiency of the whole test process is improved.

The novel toy comprises a racket and a ball tool, the racket comprises a handle and a racket face, and one end of the handle is detachably connected with the racket face; the number of the ball tools is at least one, one or more protrusions are arranged on the surface of each ball tool, and the ball tools and the racket are used in a combined mode or in a separated mode. Wherein the handle comprises a holding barrel and a U-shaped spring, the U-shaped spring is arranged in the holding barrel, and an opening of the U-shaped spring is arranged towards the axial direction of the holding barrel. By means of structural innovation, ball hitting, grip strength training and massage functions are integrated, convenience is brought to parent-child interaction, diversity and interestingness of parent-child interaction are increased, ball hitting can be performed by combining ancestral force and grandchild force, grip strength competition can be performed by means of the detached handle, massage can be performed by means of the protrusions of the ball tool, and the ball tool is convenient to use. Therefore, the effects of exercising the fine actions of children, enhancing the grip strength of the old and saving the purchase cost and the storage space of the user are achieved, and the device is extremely competitive in the market.

The utility model discloses a kind of multi-functional underground internal combustion shovel carrier, comprising: quick mounting mechanism, respectively set on shovel and pallet, for with the connecting piece of the front end lifting mechanism of shovel carrier body connection;Manned lifting mechanism, set in the tail of shovel carrier body.The utility model underground mine operation process, shovel is used for sandstone material shovel loading handling, pallet is used for goods handling, manned lifting mechanism is used for underground high-altitude maintenance and repair etc. Work, realize a kind of equipment compatible multiple working mode, improve the utilization of equipment, reduce its purchase cost.

The utility model belongs to the technical field of scalp and hair care appliances, and relates to a multifunctional hair care comb, which comprises a comb body, at least two functional heads and an identity recognition module arranged in the comb body, and one comb body can be combined with a plurality of functional heads for use in a manner that more than two functional heads are detachably mounted with one comb body. The functional heads are arranged on the comb body, the identity recognizable pieces are arranged on the functional heads, the identity recognition module is arranged on the comb body, and the working states of the functional heads can be correspondingly controlled after the identity recognition module recognizes the identity information of the functional heads, so that the functions of the hair care comb are rich, the purchase cost of consumers is reduced, the storage space of the hair care comb is reduced, and the hair care comb is convenient to carry.

The utility model discloses a fan-shaped exhalation valve of a respiratory protection article, which relates to the technical field of respirator protection articles and comprises a connecting cylinder, an annular groove is arranged at the upper end of the connecting cylinder, four groups of clamping grooves distributed at equal intervals are arranged on the inner side of the connecting cylinder, an air inlet cylinder is clamped in the annular groove, and a plurality of groups of air inlet holes are arranged at the upper end of the air inlet cylinder in a penetrating manner. And an O-shaped rubber ring is mounted at the lower end of the air inlet cylinder. According to the breather valve, the fixing frame, the connecting frame, the air filtering net and the fixing rod are arranged, when parts in the connecting barrel are damaged, the air inlet barrel is opened to replace the damaged parts in the connecting barrel, the service life of the breather valve is prolonged, the connecting frame is fixed through the fixing frame and the fixing rod, the connecting frame is more convenient and rapid to install and replace, and the practicability is high. Due to the fact that the air filter screen is clamped on the connecting frame, when the air filter screen is damaged, the air filter screen can be replaced, and the breather valve has the advantages that the service life of the breather valve can be prolonged, materials are saved, and purchase cost is reduced.

The utility model relates to the technical field of detachable cabinets, and discloses a storage device of a movable semiconductor storage, which comprises a top cover plate, a rear plate and side plates, the side plates comprise a right partition plate, a left partition plate, a door frame and a base, the rear plate comprises reinforcing ribs and heat dissipation holes, the door frame comprises a rotating shaft and a door plate, the base comprises a bottom groove and a bolt hole, and the bolt hole is formed in the bottom groove. The left partition plate comprises a clamping groove, the front partition plate, the rear partition plate, the left partition plate and the right partition plate are connected through the clamping grooves and clamping tenons, and the left partition plate and the right partition plate are connected with the base through bolts. The cabinet is simple in structure and convenient to disassemble and assemble, the connection modes are clamping connection and inserting connection, a specific installation tool is not needed, the cost and time during disassembly and assembly are saved, a traditional frame structure is replaced by the reinforcing ribs and the clamping grooves on the partition plates, the internal space is saved, and the space utilization rate is improved.

The utility model discloses a luggage case capable of being provided with a tracking module, which comprises a case body, a mounting groove is arranged on the outer wall of the case body, a mounting module is arranged in the mounting groove, the mounting module comprises a mounting plate fixedly arranged in the mounting groove, a turnover plate is hinged on the mounting plate, and the turnover plate is arranged on the mounting groove. The overturning plate is provided with a containing cavity with an opening in one end, a tracking module can be inserted into the containing cavity, and a detachable connecting structure is arranged between the overturning plate and the mounting plate. The installation module is used for independently installing the GPS tracking module and can be combined with the existing GPS tracking module in the market for use, so that the luggage case has a positioning function, the purchase cost of consumers can be reduced, and the problem that the tracking module is easy to lose due to the fact that the existing ordinary luggage case does not have an independent installation position can be solved.

The present invention discloses a portable shoe brushing device, comprising a shoe oil storage pipe, a cleaning liquid pipe connected to the outside of a shell and arranged side by side horizontally, and a control mechanism located inside the shell, a shoe brushing mechanism is arranged below the shoe oil storage pipe, liquid inlet holes are arranged on the tube bodies of the shoe oil storage pipe and the cleaning liquid pipe, liquid outlet nozzles are arranged at one end of the shoe oil storage pipe and the cleaning liquid pipe away from the shell, the control mechanism comprises a displacement amplification mechanism and a transmission mechanism for controlling the left and right displacement of the displacement amplification mechanism, the displacement amplification mechanism is horizontally arranged in the inner cavity of the shell, a boosting uncoupling mechanism for oil-water pipeline conversion is connected to one end of the displacement amplification mechanism close to the shoe oil storage pipe or the cleaning liquid pipe; the shoe brushing mechanism comprises a shoe brush handle sleeved on a horizontally arranged transmission rod, bristles are evenly arranged on the circumference and top of the shoe brush handle, and a driving motor for controlling the transmission rod is arranged on the shell. The shoe oil storage pipe, the shoe brushing mechanism and the cleaning liquid pipe are designed as an integrated whole, which is easy to carry and convenient to use.

The present invention relates to the technical field of concentrated solution preparation, and in particular to a concentrated solution preparation process after the extraction of mogrosides, a concentrated solution, and an application. The concentrated solution preparation process after the extraction of mogrosides comprises the following steps: S1. The mogroside aqueous solution passes through an adsorption resin column, and the chromatographic solution discharged from the adsorption resin column is collected; S2. The chromatographic solution is concentrated by vacuum decompression to obtain a semi-finished concentrated solution with a specific gravity of 1.12-1.39; S3. The semi-finished concentrated solution is sterilized and cooled to obtain the concentrated solution. The eluate discharged from the mogroside adsorption resin column is used as a raw material, and one fruit is used for multiple purposes, which increases the added value of monk fruit, reduces the raw material purchase cost at the breeding end, and is beneficial to the investment in the breeding industry; the preparation process is simple, and the discharged concentrated steam has no impact on the environment, saving process equipment investment and production costs; the above-mentioned concentrated solution has an outstanding use effect in breeding, and when the addition amount is only 0.1%-0.5%, it has a good improvement on the breeding effect.

The invention discloses a preparation method of a graphene / LDH hybrid composite material, which comprises the following steps: respectively adding waste incineration fly ash and aluminum ash into fermentation waste liquid, fully mixing and extracting, and filtering to obtain filtrate; mixing the obtained fly ash filtrate and aluminum ash filtrate according to the molar ratio of Ca < 2 + > to Al < 3 + > being greater than 1.5: 1, adjusting the pH value to 10-12, and fully stirring to obtain a mixed suspension; transferring the mixed suspension into a ball milling tank, adding graphene oxide, steel slag, fly ash and deionized water, carrying out mechanical ball milling, centrifugation and suction filtration, and washing and drying to obtain the graphene / LDH hybrid composite material. The GLDH with graphene oxide and montmorillonite as a substrate is directly synthesized by virtue of a mechanochemical method through co-treatment of various hazardous wastes such as waste incineration fly ash, aluminum ash, steel slag and fermentation waste liquid, and the GLDH has relatively large adsorption capacity on heavy metals Cd and Cu and can be widely applied to adsorption of heavy metals in wastewater and soil improvement.

The utility model discloses a paint pen, include: pen tube, pen tube is provided with the accommodation cavity, be provided with ink and stirring part in the accommodation cavity, stirring part is used for the ink is stirred, two pen components, two pen components respectively with the both ends of pen tube are connected, every pen component all includes pen head, and the pen head is used for writing, two ink control components, every ink control component one end with corresponding pen head is connected, and every ink control component other end all sets up in the accommodation cavity, and every pen head's outside all sets up with filter piece, and every filter piece all with corresponding ink control component abuts, and the filter piece is used for filtering ink. The utility model discloses a paint pen can realize single paint pen has two pen heads, and the specification of pen head can set up according to actual need, need not that user prepares many pen head specifications different paint pen, and can reduce ink coagulation, guarantees the even ink.