391results about How to "Avoid health hazards" patented technology

The invention discloses a lead-acid storage battery grid automatic conveying device which is arranged at the tail end of a grid production line. The automatic conveying device is provided with a main frame body, the main frame body is provided with a three-axis direction guide rail, a manipulator capable of moving in the direction of three axes and rotating in the Z axis direction is arranged through the guide rail, the manipulator is provided with a gripper adaptive to each grid and capable of being opened and closed, the gripper comprises a plurality of claw arms, and the lower end of each claw arm is of an L type. According to the automatic conveying device, the grids are conveyed through the adoption of a grabbing mode, the grids are conveyed away from a conveying table and then are stacked up in order, the manipulator grabs firmly and is suitable for the special structure and shape of each grid, and whole-course automation and intelligence of conveying can be achieved.

The invention discloses an intelligent voice housekeeper robot system. The system comprises an intelligent voice housekeeper robot, a cloud server and at least one smart home article, wherein the cloud server is connected with the intelligent voice housekeeper robot and the smart home articles; the intelligent voice housekeeper robot converts a voice signal into a control signal and sends the control signal to the cloud server; the cloud server receives the control signal and sends the control signal to the smart home articles; the smart home articles receive the control signal and make corresponding actions according to the control signal. By the adoption of highly integrated circuit design, numerous products are combined, one robot can control all intelligent appliances and security equipment including door locks, cameras, door bells, sensors and the like at home, all appliances with a network function can be networked as long as an intelligent product is wirelessly connected to the intelligent housekeeper robot, and therefore the system is easy, convenient and fast to use.

This application describes a method of preparation of a natural graphene cellulose blended meltblown nonwoven fabric, which comprises using a graphite powder as a raw material for preparing a graphene solution, adding the graphene solution to a slurry formed by mixing and dissolving a wood pulp with N-methylmorpholine N-oxide (NMMO), removing the water content thereof to form a spinning dope, and then directly preparing the natural graphene cellulose blended meltblown nonwoven fabric by a meltblown process. The present method does not require a highly toxic hydrazine hydrate solution. Further, by increasing the adding ratio of the graphene solution in the manufacturing process, control of the antistatic properties and thermal transferring function can be achieved, and thereby various requirements of different consumers can be satisfied. Besides, the fabric can decompose naturally after being used, and thus the product is harmless, natural, and environmentally friendly.

The invention discloses an engraving device for wood board processing. The engraving device for wood board processing comprises an engraver main body and a support, wherein the support is fixedly mounted at the bottom of the engraver main body; the engraving device for wood board processing further comprises a machine base, an engraving workbench, side guide rails, first moving sliding bases, a moving cross beam, a transverse guide rail, a second moving sliding base and a vertical column. The engraving device for wood board processing can polish wood board burrs, formed by engraving, on the surface of an engraved wood board, so that the surface smoothness of the engraved wood board is ensured; a large amount of wood dust and dust, generated in the processes of engraving the wood board by an engraving cutter bit and removing the burrs by a polishing cutter wheel, are sucked from the surface of the wood board through a dust suction fan and a dust suction hood, so that the wood dust generated in the engraving process is prevented from scattering on the surface of the wood board to influence the wood board engraving accuracy of the engraving cutter bit, and the wood dust and the dust are prevented from diffusing into air to cause the environment pollution and endanger the health of people who work in the environment for a long time; an adopted dust suction way helps to clean up thewood dust and the dust in an engraving groove.

The invention discloses an intelligent lineation vehicle guided by an unmanned aerial vehicle. The intelligent lineation vehicle comprises an AGV cart, a servo driving motor provided with an optical-electricity encoder is arranged on each wheel of the AGV cart, a diaphragm pump, a material box, an ultrasonic distance measuring meter and a flash alarm are arranged at the upper end of the vehicle body, and a frame is fixedly installed at the front end of the vehicle body. According to the intelligent lineation vehicle guided by the unmanned aerial vehicle, the cart is driven in an unmanned-aerial-vehicle guiding mode to do longitudinal uniform linear motion, a nozzle achieves transverse front-and-back moving operation on guiding rails through the frame, and the nozzle can do accurate curvilinear motion along with a preset track. The intelligent lineation vehicle guided by an unmanned aerial vehicle is small and exquisite, visual, intelligent, efficient, easy to operate, high in lineationquality and capable of guaranteeing safety of constructors.

The invention relates to a five-axle couple parallel-serial digit-control furnishing machine, wherein the fixed platform (3) is above the moveable platform (4), while they are connected via four flexible connecting rods (8); the upper ends of connecting rods (8) are geared to the first servo motor (2); the abrasive wheel (5) is mounted on the movable platform (4) to gear the movable platform (4); the fixed work bench (1) is under the abrasive wheel (5); the fixed work bench (1) is mounted with digit-control rotation table driven by the second servo motor (7). The invention can realize spatial three-dimension movement and one-dimension movement. The turbine blades mounted on the digit-control rotation table can realize one-dimension rotation. Therefore, the invention can furnish complex element.

The invention discloses an environmental-friendly bi-component elastomer polyurethane adhesive which comprises a polyurethane prepolymer component A and a curing agent component B, wherein the component A is the polyurethane prepolymer which is obtained by polymerization reaction of methyl diphenylene diisocyanate and polyester polyol with molecular weight of 300-3000 according to the weight ratio of 100:30-80; and the component B is the curing agent which at least comprises the following components by weight part: 40-300 parts of polylol, 5-20 parts of glycol and / or 5-10 parts of trimethylolpropane, and 0.0001-0.01 parts of reactive catalyst. The polyurethane adhesive can be applied to concrete road caulk compound.

This application describes a method of preparation of a natural graphene cellulose blended spunbond nonwoven fabric, which comprises using a graphite powder as a raw material for preparing a graphene solution, adding the graphene solution to a slurry formed by mixing and dissolving a wood pulp with N-methylmorpholine N-oxide (NMMO), removing the water content thereof to form a spinning dope, and then directly preparing the natural graphene cellulose blended spunbond nonwoven fabric by a spunbond process. The present method does not require a highly toxic hydrazine hydrate solution. Further, by increasing the adding ratio of the graphene solution in the manufacturing process, control of the antistatic properties and thermal transferring function can be achieved, and thereby various requirements of different consumers can be satisfied. Besides, the fabric can decompose naturally after being used, and thus the product is harmless, natural, and environmentally friendly.

The invention discloses a color temperature adjustable LED mixed lighting light modulation method comprising the following steps: S1, setting the color temperature and lightness level of the lighting system, and entering the next step; S2, searching various LED driving current values according to a searching table when a micro-processing system receives a set signal, forming a current control signal, and entering the next step; S3, allowing all DC drivers to form corresponding driving currents after receiving the current control signal, driving all LEDs to illuminate, and entering the next step; S4, allowing all LEDs to light up so as to form the mixed lighting effect, and reaching corresponding illumination demands. The system uses more than two LEDs of different color temperatures to mix the lights, thus providing color temperature adjustable effect and the relative constant color temperatures in the LED light intensity adjusting scope, and dividing the light intensity adjusting grades according to the human eye perception (lightness) on the light intensity.

The invention discloses a preparation method of an imino disuccinate chelator. The reaction raw materials comprise a raw material A, a raw material B, alkali metal hydroxide and water, and the pH value of the reaction system is 6-12. The preparation method comprises the following steps: reacting at 65 DEG C under normal pressure until the raw materials are boiled to the reflux temperature; and after the reaction finishes, obtaining a mixed solution containing the imino disuccinate chelator, wherein the raw material A is a butene diacid radical compound prepared by alkaline hydrolysis, and the raw material B is an aspartate radical compound prepared by alkaline hydrolysis. The preparation method has the advantages of mild reaction conditions, short reaction time and high reaction yield, shortens the production process, enhances the production efficiency, lowers the production cost, and is an efficient and environment-friendly preparation method which is very suitable for industrialized mass production.

The invention discloses a process for manufacturing a Wolter-I reflector by means of copying. The process includes the following steps that: a precision mandrel used for copying is manufactured; a DLCfilm is applied by means of the PVD (Physical Vapor Deposition) process; a gold film reflective layer is applied by means of the PVD process; a reflector shell is obtained through electroforming; thesurface of the reflector shell is trimmed; a reflector is released from the mandrel in a low-temperature refrigeration room by using a mold release device; and the surface of the reflector is washed.According to the process of the invention, DLC is applied between the copying gold film and the surface of the mandrel so as to be adopted as a release layer, and therefore, the gold film can be effectively prevented being damaged, and the smooth release of the gold film from the mandrel can be facilitated; the gold film is plated at the rotation surface and two end surfaces of the mandrel simultaneously, and therefore, electroforming nickel can be prevented from infiltrating between the gold film at the end surfaces of the mandrel and the surface of the mandrel during an electroforming process; electroforming time can be prolonged, the strength of the reflector shell is increased, the deformation of the reflector shell is prevented, and the reflector shell is easy to shell, transport andinstall; and the mandrel is made to be separated from the reflector shell through an auxiliary shelling device in the low-temperature room, and therefore, the manufacturing cost increase of the reflector and health hazards can be avoided.

A system is provided for causing audible sounds, and / or visible actions, and / or motion to occur by a vehicle's mark emblem. The system may cause such actions to be initiated manually or automatically as a result of vehicle operation or operator action. Controls are provided to prevent the audible sound, visible action, or motion to occur if the vehicle speed is above a legal speed limit. Such may be controls set by the vehicle operator. In addition, when operated from a position remote from the vehicle, the audible sound associated with the mark emblem will be limited to a volume that will prevent persons from becoming startled when they are in proximity to the vehicle.

The invention relates to a method for detecting Jingfang granules. The method comprises the steps of character identifying, checking and measuring content, wherein the step of identifying comprises identification of schizonepeta, radix angelicae pubescentis, ligusticum wallichii, fructus aurantii and bupleurum longiradiatum; the step of measuring content refers to a step of measuring content of ephedrine hydrochloride. Aiming at the problem that the condition that fewer raw materials are added or corresponding raw materials are not added by illegal manufacturer or a counterfeit drug bupleurum longiradiatum is mixed cannot be monitored because active ingredients of the granules cannot be correspondingly detected by a set of perfect detection method at present, a scientific, reasonable, practical and feasible component identification and content measurement method is formulated, the clinical effects of the Jingfang granules are guaranteed, quality indexes of several medicinal materials are clear, and application of various medicinal materials in the Jingfang granules is ensured, so that the curative effect of the drug is guaranteed. Moreover, the counterfeit drug bupleurum longiradiatum in radix bupleuri can be effectively detected, and a phenomenon that health of patients is endangered by two toxic ingredients, including bupleurotoxin and acetylbupleurotoxin, contained in bupleurum longiradiatum is avoided.

The invention discloses a tungsten carbide composite material containing aluminum oxide particles and silicon nitride whiskers, and a preparation method thereof. The tungsten carbide composite material contains components of, by mass: 0.5 to 3% of aluminum oxide particles, 0.4 to 10% of silicon nitride whiskers, and balance of tungsten carbide and inevitable impurity phases. The silicon nitride whiskers are in-situ synthesized beta-Si3N4 whiskers. The WC composite material provided by the invention contains no metallic binding phase, and has excellent hardness, excellent wear resistance, excellent high-temperature mechanical properties, and medium toughness. With the material and the method provided by the invention, preparation cost of the WC composite material can be reduced, and the application range of the material is widened. The material is suitable to be produced into cutting tools such as indexable inserts, plastic working tools such as wire drawing dies, and shearing tools such as punching shear dies.

The invention relates to a detection method of common goldenrop particles. The detection method comprises inspection items of identifying characters and measuring content. The identification item comprises identification of scutellaria baicalensis, identification of liquorice, identification of radix bupleuri and identification of bupleurum longiradiatum; the item of measuring content is used for measuring the content of baicalin. In order to solve the problem of incapability of monitoring insufficiency or absence of corresponding raw materials of illegal manufacturers and monitoring the interfusion of bupleurum longiradiatum caused by the lack of one set of complete detection method for detecting active ingredients of common goldenrop particles at present, the method disclosed by the invention can be used for identifying components and measuring content scientifically, reasonably and feasibly; the method is capable of guaranteeing the clinical efficacy of common goldenrop particles, making clear quality indexes of several medicine materials and guaranteeing the use of all medicine materials in the common goldenrop particles, thereby guaranteeing the curative effect of the common goldenrop particles; in addition, bupleurum longiradiatum serving as a counterfeit drug of radix bupleuri can also be effectively detected, thereby avoiding the damage to the health of patients caused by two toxic ingredients comprising radix bupleuri toxin and acetyl radix bupleuri toxin in bupleurum longiradiatum.

The invention relates to an organotin lead-free proximate matter which consists of the following matters (counted in weight portions): 100 portions of polyvinyl chloride, 1.3 to 1.5 portions of organotin stabilizing agents; 8 to 10 portions of titanium pigment, 8 to 10 portions of Haloflex, 1.3 to 1.5 portions of ACR processing modifiers; 2.0 to 29 portions of compound wax-hard calcium lubricating systems. After being counted according to a prescription, the matters are firstly processed into a mixture, and then the mixture is extruded to be the proximate matters by a double screw extruder. The proximate matter has the advantages of uniform and mild color, good impacting performance and high fillet intensity after a door and a window are assembled; besides, the output rate is high and completely accords with or exceeds the standard demands of GB / T8814-2004. The organotin stabilizing agent which is corresponding to the drinking water quality policy paper of the world health organization in particular completely abandons a lead salt stabilizing agent and thoroughly realizes free of lead.

The invention relates to a method for metal surface treatment through femtosecond laser. The method for metal surface treatment through the femtosecond laser comprises the following steps that polishing treatment is carried out on the surface of a metal piece; the femtosecond laser is used for machining the polished metal piece surface so that a surface with a micro-nano composite structure can beobtained; the surface with the micro-nano composite structure is washed and blow-dried; and the blow-dried metal piece is put at the room-temperature environment for a period of time. According to the method, complex following surface machining treatment procedures are not needed, the metal piece only needs to be kept at the room temperature for a period of time, an excellent surface hydrophobiceffect can be achieved, the process is simple, the machining efficiency is high, and the surface hydrophobic performance of the workpiece is good.

The invention relates to a production method of a dried blueberry tea fruit. The production method is characterized by taking fresh blueberry fruits or frozen blueberry fruits as main materials and including the working procedures of selection, cleaning, blanching, color protection, sugar making, tea soaking, drying and the like, wherein the combined actions of citric acid and ascorbic acid are adopted in color protection, once cooking is adopted in sugar making, then using infused tea for soaking and finally conducting successive temperature rising for drying, thus obtaining the finished product of the dried blueberry tea fruit. The finished product is characterized by being sweet and sour and tender in pulp, and integrating tea flavor with blueberry flavor. The production method of a dried blueberry tea fruit is applicable to not only fresh blueberries but also frozen blueberries; and a sulfur-free technology is adopted in the production process, therefore the nutrients and the natural flavor of the blueberry fruits are kept to the maximum, in addition, the dried blueberry tea fruit integrates the nutrients and the health care function of tea.

This application describes a method of preparation of a natural graphene cellulose blended fiber, which comprises using a graphite powder as a raw material for preparing a graphene solution, adding the graphene solution to a slurry formed by mixing and dissolving a wood pulp with N-methylmorpholine N-oxide (NMMO), removing the water content thereof to form a spinning dope, and then spinning the spinning dope by a Dry-Jet Wet method to manufacture a natural graphene cellulose blended fiber. The present method does not require a highly toxic hydrazine hydrate solution. Further, by increasing the adding ratio of the graphene solution in the manufacturing process, control of the antistatic properties and thermal transferring functions can be achieved, and thereby various requirements of different consumers can be satisfied. Besides, the fibers can decompose naturally after being used, and thus the product is harmless, natural, and environmentally friendly.

The invention provides an oil-water-gas three-phase mixing nozzle which is characterized by comprising a nozzle body and a nesting ring, wherein the nozzle body comprises a head part, a middle part and a bottom part; the head part of the nozzle body is a cone, a jet hole is formed in the top end of the cone, and at least two water spray holes are uniformly distributed in the cone; the middle part of the nozzle body is a cylinder, and at least two gas holes are uniformly formed in the cylinder; the bottom part of the nozzle body is of a thread structure; the nesting ring and the middle part of the nozzle body form a clearance structure in a matching manner. The oil-water-gas three-phase mixing nozzle is simple in design and is suitable for a variety of oils and used in trace lubrication devices for metal processing.

The invention discloses a concrete mixing device with an automatic cement feeding function. The concrete mixing device comprises a mixing box, a mixing cavity with a leftward opening and a rightward opening is formed in the mixing box, a concrete mixing device body is arranged in the mixing cavity, the concrete mixing device body is used for stirring and mixing a concrete raw material, a turnoverconveying device is arranged at the opening in the right side of the mixing cavity, the turnover conveying device conveys cement bags into the mixing cavity through rotary motion and can convey the cement bags from which cement is thoroughly discharged to the outside for storage, a cement bag clamping device located on the left side of the concrete mixing device body is arranged in the mixing cavity, the cement bag clamping device is used for clamping and fixing the cement bags, and a vibration screening device located on the left lower side of the turnover conveying device is arranged in themixing cavity. According to the concrete mixing device with the automatic cement feeding function, automatic feeding of cement powder can be achieved, dust generated in the feeding process is greatlyreduced, and harm to the health of workers is avoided.

A building wall grinding device with a dust-absorbing function, comprising a main body, a main bracket is arranged in the main body, a driving motor is fixedly installed on the main bracket, the motor shaft of the driving motor is fixedly connected with the driving shaft through a coupling, and the main bracket is Two auxiliary brackets are welded and fixed on the bracket, and one end of the first transmission shaft is coaxially fixed with a first transmission bevel gear; the left side wall of the main body is rotatably provided with a first driven shaft and a second driven shaft; The front grinding disc is fixedly installed on the left end of the driven shaft, and the first secondary-stage driven bevel gear is fixedly installed on the right end of the first driven shaft. The first secondary-stage driven bevel gear is meshed with the first secondary-stage driving bevel gear. A conveying fan is installed on it, and an air outlet pipe is arranged on the side of the filter box away from the conveying pipe; in the present invention, the front grinding disc, the active grinding disc and the rear grinding disc rotate and grind the wall body, which makes the grinding range wider and effectively improves the Efficiency of wall grinding.

The invention provides an animal room IVC automatic taking / placing system and method. The system achieves the IVC taking / placing functions through an automatic taking / placing robot. The robot moves under navigation of a navigation magnetic track, completes positioning of cages and completes taking / placing of the cages through a manipulator. The animal room IVC automatic taking / placing system achieves IVC automatic taking / placing and carrying through combination of a real-time operation system uC / OS and the robot. The animal room IVC automatic taking / placing system has the advantages of automation, intelligence and high accuracy, can be used for replacing an existing manual cage taking / placing and carrying method and prevent cross contamination of animals and the environment and hazards tothe health of the animals and working staff, the labor force is greatly saved, and the working efficiency is improved. The animal room IVC automatic taking / placing system records and distinguish serial numbers in the program through rfid tags at the bottoms of the cages, the management workload of animal rooms is reduced. The animal room IVC automatic taking / placing system provides better preparations for processing and treatment of a rear-end automatic assembly line and achieves accurate high-efficiency management on the experimental animal rooms.

The invention relates to the technical field of coating spraying and discloses spraying equipment for a nano coating of a lamp. The spraying equipment comprises a frame. A motor, a processing table and a spraying box are arranged on the frame; the spraying box is connected to a spray head which comprises a rotary barrel rotatably connected to the frame; a fan is arranged on the rotary barrel; an inner thread is arranged on the inner wall of the rotary barrel; an axle rod is arranged in the rotary barrel; a blowing pipe is arranged on the axle rod and communicates to the fan, and the blowing pipe extends spirally to form an outer threaded matched with the inner thread on the axle rod; the axle rod is connected to the motor through a belt; a track is arranged at the lower end of the rotary barrel; a sliding head is slidably connected in the track; the lower end of the blowing pipe is parallel to the track, and the lower end of the blowing pipe is close to and faces the sliding head; thesliding head is connected to a feeding head; a gap is reserved between the feeding head and the rotary barrel; a material cavity is formed in the feeding head; and a spray pipe communicating to the material cavity is formed in an eccentric part of the lower end surface of the feeding head. The spray head can rotate automatically through the spraying equipment, so that a coating is prevented from being sprayed to a human hand.

The invention discloses a method for manufacturing seamlessly spliced leather wear. The method comprises the following steps of 1) designing a product, namely designing a fashion style according to characteristics of a seamless splicing process; 2) producing a sample, namely producing the sample in a given size according to a fashion style design; 3) marking off, namely matching required leather according to luster and texture of leather; 4) tailoring, namely tailoring the leather after marking off according to the provided sample; 5) performing hot melt adhesion, namely setting parameters such as temperature, speed and pressure of hot melting equipment according to a requirement, and performing hot melt adhesion operation on the leather according to an operational process; 6) sewing accessories and attachments, namely sewing the accessories and the attachments such as zippers, decoration and buttons, or installing the accessories and the attachments on the spliced leather wear by using other equipment; 7) inspecting, namely performing quality inspection on the spliced finished product. According to the method, parts of the wear are spliced through a hot melt adhesion process, the firmness of the leather wear is improved, potential safety hazards brought by needle breakage and glue water are avoided, and the leather wear is more tidy and smooth in overall appearance.

The invention discloses a special locker for medical care personnel. The special locker for the medical care personnel comprises a cabinet body, wherein a clapboard is arranged in the cabinet body and divides the inner part of the cabinet body into an upper chamber and a lower chamber; a clothes rail is arranged in the upper chamber; a pair of liquid storage tanks are arranged on the upper surface of a shell; a three-way pipe communicated with the inner parts of the pair of liquid storage tanks is arranged in the upper chamber respectively, and is communicated with a sprayer through a liquid guiding pipe; solenoid valves are respectively arranged on two branch pipes of the three-way pipe; a linear motor is arranged on the upper surface in the upper chamber; the telescopic end of the linear motor is fixedly connected with the sprayer; a drying unit communicated with the upper chamber is arranged in the lower chamber; a control panel is arranged on a door of the cabinet body and is respectively electrically connected with a plurality of solenoid valves, the linear motor and the drying unit. The special locker for the medical care personnel has the beneficial effects of simple structure and strong practicability.

The invention relates to an automatic cleaning device of a measuring instrument. The device comprises a base and a measuring plate, a first support column and a second support column are fixedly connected to the bottom of the measuring plate, a first air bag is arranged between the first support column and the second support column which are sleeved with support springs, and the support springs are located between the base and the measuring plate; a stand column is fixedly connected to the side of the measuring plate, a first support platform and a second support platform are fixedly connectedto the two sides of the stand column respectively, a second air bag is fixedly connected to the first support platform, a gas-guide tube is communicated between the second air bag and the first air bag, the second support platform is provided with a disinfection tank and a liquid storage tank, a piston is slidably connected into the disinfection box, the piston divides the interior of the liquidstorage tank into a liquid chamber and a gas chamber, a piston rod is fixedly connected to the piston, the free end of the piston rod is movably connected to the second air bag, a sprinkler pipe is arranged at the bottom of the liquid chamber, a gas ejector pipe is communicated with the bottom of the gas chamber, and a U-shaped pipe is communicated between the liquid chamber and the liquid storagetank. By means of the device, the measuring instrument can be cleaned.

The present invention discloses an adjustable clamp for processing jewels, which is a clamping tool consisting of a metal rod, a fixed pin, a tail slot, a cone collet, a fastening sleeve nut and a clamping jaw. The present invention replaces the traditional mucilage glue process that rubber is used for sticking jewel bosses for grinding so as to avoid 5 to 10 percent of the shedding stone rate when the rubber is used for sticking the jewel bosses for producing and grinding and increases the A-class goods rate of the product over 95 percent. The present invention not only saves a plurality of auxiliary materials such as rubber, shellac, alcohol, liquefied gas, and the like, but also prevents the materials from polluting the environment and harming the health of operating workers.

The invention relates to the technical field of reuse of waste fungus chaff after edible fungi cultivation and particularly relates to flammulina velutipes fungus chaff feed and a production method and an application thereof. The flammulina velutipes fungus chaff feed comprises a mixture a and a mixture b, wherein the mass ratio of the mixture a to the mixture b is (1000:1)-(1000:10); the mixture a consists of the following raw materials: flammulina velutipes fungus chaff powder, sweet potato dreg powder, rice bran, wheat flour, soya bean meal, fish meal or meat and bone meal and table salt; and the mixture b consists of the following raw materials: cellulase, hemicellulase, aspergillus niger, ligninase, cutinase, feruloyl esterase and brown sugar. The production method of the flammulina velutipes fungus chaff feed is simple. The flammulina velutipes fungus chaff feed is used for culturing barley pests, the time required by culturing the barley pests is short, the weights of the barley pests are heavy, and a plurality of eggs can be laid by the barley pests. The cultured barley pests are added into the conventional feed and are used for feeding beasts and birds, crabs, fishes, turtles, eels, finless eels or batrachia, the growth of a fed animal is obviously accelerated, the increase production is remarkable, and the effect is good.

The invention provides a rust removing machine special for a petroleum pipeline. The rust removing machine special for the petroleum pipeline comprises an annular rotating plate arranged on the outer diameter of a petroleum drill stem in a sleeving mode, annular cavities are formed in the inner wall of the annular rotating plate, and the rust removing machine special for the petroleum pipeline further comprises clamping devices which are arranged in the corresponding annular cavities evenly around the center of the annular rotating plate and rust removing devices fixed on the lower surface of the annular rotating plate; each clamping device comprises a support rod, a spring and a universal ball, wherein each support rod is arranged in the corresponding annular cavity in a sliding mode, the two ends of each spring are connected with the inner wall of the corresponding annular cavity and the rear end of the corresponding support rod respectively, the front end of each support rod penetrates through an opening of the corresponding annular cavity and is arranged outside the corresponding annular cavity, and the universal balls are arranged at the front ends of the support rods. Accordingly, due to the fact that the springs and the universal balls are arranged, the rust removing machine special for the petroleum pipeline can be suitable for petroleum drill steams with different sizes.