54results about How to "No external force" patented technology

The invention discloses a multistage-series stepped natural-type artificial wetland. The multistage-series stepped natural-type artificial wetland comprises N-stage wetlands, wherein water distribution channels having depths which are sequentially increased along a water flow direction are arranged between every two adjacent wetlands; and the wetland of each stage is sequentially composed of aquatic plants, a soil layer and a matrix layer from top to bottom, and artificial porous permeation tubes are arranged in the matrix layer along the water flow direction. A construction method for the wetland comprises the following steps of: a) excavating a wetland bed body; b) performing anti-seepage treatment; c) filling a matrix and the permeation tubes; d) covering the coil layer; e) building the channels; f) cultivating aquatic plants; and g) purifying a water body. Via the wetland and the construction method for the same, the automatic flowing of sewage is realized, and energy is saved; the water distribution channels and the permeation tubes with different depths are beneficial to the survival of aerobic micro-organisms and anaerobic micro-organisms, thus realizing rapid and efficient purification for sewage; and by distributing the artificial porous permeation tubes, the free permeation of the water body is ensured, the contact surface area is increased, the purification capacity is improved, the blockage of the matrix layer and the eutrophication of the water body are avoided, and the service life of the wetland is prolonged.

The invention relates to a magnetic trigger mechanism at least comprising a yoke having an armature opening, in which yoke an armature is placed, which armature is coaxially surrounded by at least one section of the coil body having at least one excitation coil and which is acted on by the force of a preloaded spring element and which remains in a first end position due to the magnetic retaining force of a permanent magnet when current is not flowing through the excitation coil, the permanent magnet being arranged in the area of the first end of the armature together with a base extending between the armature and the permanent magnet, and the second end position of the armature being achieved by means of a brief flow of current through the excitation coil together with the accompanying lowering of the magnetic retaining force and the spring force, which is effective then. The invention is characterized in that the first end of the armature, which first end faces away from the armature opening, is guided in the coil body in a centered manner, and the second of the armature, which second end faces the armature opening, is likewise guided in a centered manner by means of a centering ring centered in the coil body, the highly permeable centering ring lies against the yoke at the armature opening and can move radially relative to the yoke, the base is centered in the coil body, the centering ring together with the coil body ensuring that the armature lies flat in the area of the first end without tipping and always guaranteeing maximum retaining forces due to the armature lying flat, the spring element having a larger diameter than the armature, and the magnetic flux commutating upon triggering from a series connection to a parallel connection.

The invention provides a resin insulation dry type transformer with a three-dimensional reel iron core. The dry type transformer comprises a transformer body, the transformer body comprises a three-dimensional reel iron core, the three-dimensional reel iron core comprises single frames of a rounded rectangle structure, the three single frames are arrayed and spliced into a three-dimensional equilateral triangle body, the splicing portion of every two adjacent single frames is wound and connected through a coil to form three windings, and each winding is cured and formed by integrally pouring a curing agent; the upper end and the lower end of the three-dimensional reel iron core are clamped by an upper clamping part and a lower clamping part respectively, the three-dimensional reel iron core is fixed to a transformer base, an upper blowing cooling fan is arranged in the lower clamping part, the upper surface of the lower clamping part is hollow, and an air port of the upper blowing cooling fan faces upward and blows air in the axis direction of the windings. According to the resin insulation dry type transformer with the three-dimensional reel iron core, the upper blowing fan is located below the windings and blows air from the underneath of the windings in the axis direction of the windings to cool the windings in a forced mode, so that heat dissipation of the transformer is uniform, the phenomenon of nest wind is prevented, and the service life of the transformer is prolonged.

The invention discloses a rotating platform for a tire conveying line, which comprises a base, a support frame and a conveying assembly, wherein the conveying assembly is fixed on the support frame; a driving device for driving the support frame to rotate is arranged between the base and the support frame; a balancing device for keeping the rotation of the support frame balanced is further arranged between the support frame and the base; a movable stopper is arranged at the front end of the conveying assembly; the middle lower part of the movable stopper is vertically connected onto the support frame through a moving shaft; a stopping block is fixed on the base below the movable stopper. According to the invention, when the bottom of the movable stopper collides the stopping block, the movable stopper can rotate automatically and is lower than a conveying surface; when the bottom of the movable stopper is separated from the stopping block, the movable stopper can rotate and return to the original position by gravity, and at the moment the upper end of the movable stopper is higher than the conveying line, so that tires are prevented from slipping backwards, the movable stopper is reliable, and needs no external force, besides, the structure is simple and the cost is low.

The invention discloses a combined firework automatic assembling system. The combined firework automatic assembling system comprises a propellant powder charging subsystem, a bottom paper piece punching and filling subsystem, an effect piece filling subsystem and a surface paper piece filling subsystem which are connected by a combined firework outer cylinder transmitting mechanism sequentially, and also comprises a control and operating subsystem and a safety monitoring subsystem. Mechanical equipment is adopted during production of fireworks and crackers, and an automatic flow line production system comprising combined firework production main processes, especially dangerous processes, is established, so accidents are prevented to the greatest extent; and in case of the accident, personal casualties are avoided. As a whole, the automatic flow line production system has the advantages that the safety is improved, the enterprise production cost is greatly reduced, the product quality is obviously improved, the working efficiency is improved and the like.

The invention relates to the field of home textile articles, in particular to a processing method and special equipment for silks. The invention mainly aims to solve the technical problems that: in the prior art, the silk has poor elasticity and is broken after being stretched by an external force, thus short fibers are produced; and when the silk is in daily use, adhesion is caused owning to moisture absorption of silk glue, thus the bulkiness, warm effect and flexibility of the silk quilt are poor. The method provided by the invention comprises the following steps of: pouring correct end cocoon into a silk reeling slot, then winding cocoon silk on the correct end cocoon onto a reeling frame around a silk guiding roller, manufacturing a warp-wise layer and a weft-wise layer of the silk quilt, taking the silk beams with the length and width to be consistent with those of the silk quilt from the reeling frame, baking and airing, thus the finished product silk is obtained. The equipment provided by the invention comprises the silk reeling slot, the silk guiding roller is arranged above the silk reeling slot, one side of the silk guiding roller is provided with the reeling frame, the circumference of the reeling frame is consistent with the length or width of the silk quilt to be manufactured, and the width of the reeling frame is more than the width or length of the silk quilt to be manufactured.

The invention relates to an intelligent cable connector. The intelligent cable connector has functions of a cable extending connector and an insulated connector. Besides, the intelligent cable connector is provided with a photoelectric extending connector which comprises semiconductive photoelectric separation fingerstalls, optical fiber protective jackets, an optical fiber connector, and heat-insulation binding belts, wherein the semiconductive photoelectric separation fingerstalls are both cylindrical heat shrinking tubes which are prefabricated with selective semiconductive material and are of one-in and two-out structure or one-in and multi-out structure, and are fastened to a metal shielding layer through the heat-insulation binding belts, the optical fiber protective jackets are metal jackets replacing a temperature measuring unit, and are matched with the photoelectric separation fingerstalls to protect temperature measuring fibers from being damaged, the number of the photoelectric separation fingerstalls is two, and the photoelectric separation fingerstalls ensure photoelectric separation. According to the intelligent cable connector, an original insulator structure and an original electric field structure are not damaged, photoelectric performance of an original product is not reduced, and meanwhile a function of on-line accurate monitoring of cable temperature is achieved.

The invention discloses a factory breeding lotus grass jump straight chest flea beetle facilities construction which comprises a greenhouse, a culture pond, a small plastic greenhouse and ancillary facilities, wherein the greenhouse is a basic framework composed of an arch bar, stand columns, draw bars, suspenders, diagonal draw bars and card slots, a door and a film rolling device are arranged on the basic framework, an insect proof net and sunshade net are arranged, the greenhouse is stable, safe and practical. The culture pond is arranged in the greenhouse, suitable environment is established for planting alternanthera philoxeroides is beneficial to the jump straight chest flea beetle breeding of the alternanthera philoxeroides. The small plastic greenhouse is arranged above the culture pond for increasing the temperature for the second time in winter and ensuring smooth jump straight chest flea beetle breeding of the alternanthera philoxeroides. Water and electricity lines, drainage ditch, country roads, protective fence and advertising boards are established for ensuring insect source breeding and base safety. Suitable growth environment is offered for the breeding of the alternanthera philoxeroides straight chest flea beetle without influence of external environment and seasonal change; the thermophily insects in Yangtze river basin can be ensured to overwinter and oversummer normally and to grow and breed all the year round.

The invention discloses a fabricated building frame column pouring structure which comprises a lower fabricated column and an upper fabricated column. A floor is supported on the outer side of the lower fabricated column, and the top face of the lower fabricated column is higher than the plane where the floor is located in the vertical direction. The lower fabricated column is provided with a plurality of lower column steel bars, the upper fabricated column is provided with a plurality of grouting sleeves, and the grouting sleeves and the lower column steel bars are mounted in a matched mode.Each grouting sleeve is provided with a grouting inlet and a grouting outlet, and the grouting outlets and the grouting inlets of the adjacent grouting sleeves are connected through series connectionpipes. By changing the joint position of the upper column and the lower column, the grouting sealing problem is solved; through unidirectional pressure diaphragms, grout can only flow uni-directionally, and thus bubbles are prevented; and by arranging a rubber neck ring, the sealing performance of a joint can be further improved.

The invention discloses a clamping mechanism for a circular electroplating part. The clamping mechanism comprises a supporting plate, a fixing block, a first lead screw, a first coupling, a first stepping motor, a mounting plate, a bearing block, a second lead screw, a second coupling, a second stepping motor, a connecting rod, V-shaped clamping plates, rolling wheels and the like. According to the clamping mechanism for the circular electroplating part, the V-shaped clamping plates are arranged on the two sides of the lower end of the supporting plate correspondingly, clamping of the circularelectroplating part is realized through the rolling wheels on the V-shaped clamping plates, and the rotation of the electroplating part can be realized through the rotation of the rolling wheels so that the whole circular electroplating part can be conveniently electroplated; the first stepping motor is arranged at the upper end of the supporting plate, and the supporting plate and the electroplating part clamped by the rolling wheels can be driven to move up and down so that the electroplating part can be conveniently put into an electroplating tank for electroplating; and a rotating motor is arranged above one rolling wheel, and is used for driving a first stopping block to rotate so that the roling wheels can be rotated to drive the electroplating part to rotate, and electroplating ofthe clamping part can be realized without the action of external force.

The invention relates to a method for removing cap layer in a SiC nanostructure prepared by anodization, which belongs to the technical field of a material. The method comprises a step of pre-etchingwith a saturated NH4HF solution before etching by an etching solution taking a SiC wafer as an anode. The method can effectively remove the cap layer produced in the process of preparing the SiC nanostructure prepared by anodization, has simple and controllable process, and has good repeatability, the method is simple, the cap layer automatically falls off, no external force is required, and the removal efficiency is high. The method for removing the cap layer also reduces the morphology of a top surface of the SiC nanostructure obtained by anodization, openness is improved, and the performance of SiC nanostructure is increased. In addition, the method of removing the cap layer requires no additional equipment, and shortens the etching time and reduces the cost.

The invention discloses an agricultural product pesticide residue detection device, and belongs to the technical field of pesticide residue detection. The agricultural product pesticide residue detection device comprises a crushing box, a mixing box, a transmission structure and a crushing structure. The crushing box is fixedly connected with the mixing box. The crushing box is positioned on the upper side of the mixing box. A first electromagnetic valve is arranged at a bottom opening of the crushing box. A water inlet is formed in the side end part, close to the upper side, of the mixing box. The crushing box is used for containing agricultural products to be detected and crushing the agricultural products. Through arranging the crushing piece, agricultural products to be detected is crushed, pesticide residues on the outer surface of the agricultural product and in the agricultural product can be detected. The detection efficiency is improved, and the crushing part can also play a role in cleaning crushed agricultural products. Meanwhile, through arrangement of the crushing box and the mixing box, crushing, dilution and detection of to-be-detected agricultural products are integrated, the occupied area required in the detection process is reduced, and the operation is simple and convenient.

The invention provides a resin insulation dry type transformer with a three-dimensional reel iron core. The dry type transformer comprises a transformer body, the transformer body comprises a three-dimensional reel iron core, the three-dimensional reel iron core comprises single frames of a rounded rectangle structure, the three single frames are arrayed and spliced into a three-dimensional equilateral triangle body, the splicing portion of every two adjacent single frames is wound and connected through a coil to form three windings, and each winding is cured and formed by integrally pouring a curing agent; the upper end and the lower end of the three-dimensional reel iron core are clamped by an upper clamping part and a lower clamping part respectively, the three-dimensional reel iron core is fixed to a transformer base, an upper blowing cooling fan is arranged in the lower clamping part, the upper surface of the lower clamping part is hollow, and an air port of the upper blowing cooling fan faces upward and blows air in the axis direction of the windings. According to the resin insulation dry type transformer with the three-dimensional reel iron core, the upper blowing fan is located below the windings and blows air from the underneath of the windings in the axis direction of the windings to cool the windings in a forced mode, so that heat dissipation of the transformer is uniform, the phenomenon of nest wind is prevented, and the service life of the transformer is prolonged.

The invention relates to the field of a stirrer, and in particular relates to an emptying bin gate. The emptying bin gate is arranged at the bottom of an emptying bin of a stirrer. The emptying bin gate comprises a movable gate valve plate, a connecting rod, an operating handle and a limiting fulcrum, wherein a discharge hole is arranged at the bottom of an emptying bin; the limiting fulcrum is arranged on one side of the discharge hole; the movable gate valve plate is fixedly connected with one end of the connecting rod, and a board of the movable gate valve plate faces to the discharge hole; the other end of the connecting rod is articulated with one end of the operating handle to form a hinge point; the hinge point is in contact connection with the limiting fulcrum; the middle part of the operating handle is articulated with the external bottom of the emptying bin; and one end at the hinge point on the central line of the connecting rod is higher than one corresponding end of the movable gate valve plate. The emptying bin gate disclosed by the invention realizes emptying without an existing valve, a rotation step has no contact with slurry, and thus no jamming is caused; the operating handle saves force in operation according to a lever principle; and the movable gate valve plate, the connecting rod, the operating handle and the limiting fulcrum form self locking when the emptying bin gate is closed, and no external force is needed.

The invention discloses a method for preparing a cladding coating on the surface of a carbon fiber reinforced thermoplastic composite material by using a laser-assisted SHS process, which relates to a method for preparing a cladding coating. The purpose of the present invention is to solve the existing problems of complex process, low joint strength, easy deformation of resin and high cost in the existing method for preparing metal coating on the surface of carbon fiber reinforced thermoplastic composite material. Method: pre-treat the carbon fiber reinforced thermoplastic composite material; 2. spread the cladding powder on the surface of the treated carbon fiber reinforced thermoplastic composite material, then compact the cladding powder, and then irradiate in a vacuum chamber to obtain The carbon fiber reinforced thermoplastic composite material with a cladding coating formed on the surface is to complete a method of preparing a cladding coating on the surface of a carbon fiber reinforced thermoplastic composite material using a laser-assisted SHS process. The invention can obtain a method for preparing a cladding coating on the surface of a carbon fiber reinforced thermoplastic composite material by using a laser-assisted SHS process.

The invention belongs to the technical field of dental implant mechanical testing, and discloses an improved dental implant fatigue test fixture which comprises a compression system, a fixing system and a water bath system, the compression system comprises an upper pressure head, a connecting rod, a sliding pressure plate, a compression plate, a thrust ball bearing core and a replaceable pressure plate; the fixing system comprises an embedding cylinder, an arc-shaped fixing platform upper assembly, a fixing baffle, an arc-shaped fixing platform lower assembly, a platform positioning plate and a T-shaped groove positioning plate. The water bath system comprises a lengthened shaft, a connecting bottom plate, a dry heating rod, a waterproof gasket, a water inlet connector, a water outlet connector, a waterproof thermocouple, a water bath cover, a positioning ring and a connecting cover. The device can better fix a dental implant sample and prevent the dental implant sample from being interfered by extrusion external force during fixing and horizontal external force during loading, and meanwhile, the environment temperature and the total liquid amount of external bionic liquid can be controlled to be kept stable.

The invention discloses a lockable reversing valve. A valve sleeve with a bore is mounted in at least one working oil port of a valve body, one end, which is close to a slide valve, of the valve sleeve is provided with a guide sleeve, a push rod is arranged in the guide sleeve, and the slide valve is provided with a conical surface between the push rod and an oil inlet; a spool is arranged in the valve sleeve over the push rod, a limit seat is arranged in the valve sleeve over the spool, a pilot spool is arranged in the bore of the lower part of the spool, a pilot valve restoring spring is arranged between the pilot spool and the upper end of the spool, and a restoring spring is arranged between the spool and the limit eat; the valve sleeve is provided with an axial hole, an oil cavity is arranged in the valve sleeve outside the spool, an annular cavity is arranged between the middle section of the valve sleeve and the valve body, a lower radial hole and an upper radial hole are arranged in the valve sleeve, and a radial damping hole is arranged in the spool. When the slide valve needs to be restored, control force does not need to be increased, and thereby controlling comfort and no leakage are ensured; moreover, the lockable reversing valve is convenient to machine, demount and mount, and is highly universal.

The invention relates to a laser fiber speed measuring sensor, a switching value sensor and a measuring method. The laser fiber speed measuring sensor comprises a shell body having an accommodating space, wherein a rotating disk is arranged inside the shell body, a plurality of through holes in the same shape are evenly formed in the surface of the rotating disk along the circumferential direction, the through holes are formed at a fixed interval, the sector size of the same diameter part entity and that of the interval are completely identical at an open hole sector length part, a rotating shaft is arranged at the center of the rotating disk, and the rotating shaft extends out of the shell body and is connected with a first structure to be measured; one side of the rotating disk is provided with an optical fiber connected to a light emitting unit, an emitting end of the optical fiber and the through holes are in the same horizontal position, so that pulsed laser can completely pass through the through holes, and the tail end of the optical fiber is connected with a laser demodulator; and the other side of the rotating disk is provided with a reflection unit, and the reflection unit receives and reflects the pulsed laser passing through the through holes, so that the pulsed laser returns to the optical fiber via an original path and enters the laser demodulator.

The invention discloses an environmental concrete purifying system for a eutrophic water body. The system comprises an environmental concrete purifying unit, wherein the environmental concrete purifying unit comprises a box body, an environmental concrete permeable layer, a plant and an environmental concrete adsorption matrix; the environmental concrete permeable layer is arranged at the top of the box body and communicated with the inside of the box body; the environmental concrete permeable layer is composed of environmental concrete; the plant is grown in the environmental concrete permeable layer, and the root system goes through the environmental concrete permeable layer and reaches the inside of the box body; the environmental concrete adsorption matrix is composed of environmental concrete and arranged in the box body; the environmental concrete is prepared from gravel, cement, silicon dioxide micro powder, a water reducing agent and water in a weight ratio of (1500-1700):(250-300):(30-40):4:(50-80); and the permeability coefficient of the environmental concrete is greater than or equal to 1cm / s, the compressive strength is higher than or equal to 15MPa, the communication porosity is 20-30%, and the communication porosity means that the pores are communicated up and down in the environmental concrete permeable layer. The system disclosed by the invention can be used for effectively purifying the eutrophic water body while the energy consumption is low and the system is easy to operate and durable in use.

The invention discloses a combined firework automatic assembling system. The combined firework automatic assembling system comprises a propellant powder charging subsystem, a bottom paper piece punching and filling subsystem, an effect piece filling subsystem and a surface paper piece filling subsystem which are connected by a combined firework outer cylinder transmitting mechanism sequentially, and also comprises a control and operating subsystem and a safety monitoring subsystem. Mechanical equipment is adopted during production of fireworks and crackers, and an automatic flow line production system comprising combined firework production main processes, especially dangerous processes, is established, so accidents are prevented to the greatest extent; and in case of the accident, personal casualties are avoided. As a whole, the automatic flow line production system has the advantages that the safety is improved, the enterprise production cost is greatly reduced, the product quality is obviously improved, the working efficiency is improved and the like.

The invention relates to the field of chamfering detection, in particular to a neodymium iron boron magnetic ring chamfering detection mechanism which comprises a conveying rail, a side face pressingmechanism, an upper pressing mechanism, a chamfering detection mechanism and a blocking mechanism. The conveying rail is obliquely arranged, the discharging end is arranged below the conveying rail, the side face of the feeding end of the conveying rail is provided with a side face pressing mechanism and the chamfering detection mechanism, and the upper portion of the feeding end of the conveyingrail is provided with the upper pressing mechanism. The blocking mechanism is arranged at the discharging end of the conveying rail. By arranging the upper second sliding rail, the lower second sliding rail and the first sliding plate, the second sliding plate and the first sliding plate can move respectively, meanwhile, under the action of the reset spring, it is guaranteed that the detection block on the second sliding plate can be tightly attached to the chamfer, the chamfer detection reliability is improved, and the detection error is reduced.

The invention discloses an oxide shell treatment device for a reverse extrusion machine, and relates to the field of machining. The oxide shell treatment device comprises a cleaning shaft and a cleaning ring, wherein a screw rod is arranged on the end part of the cleaning shaft, one end of the screw rod is fixed to the tail part of the cleaning shaft through an anti-rotation mechanism, and the screw rod and the cleaning shaft are coaxial; a press ring is arranged at the other end of the screw rod, the cleaning ring is arranged on the outer wall of the press ring, a location key axially extending is arranged between the press ring and the cleaning ring, and an annular projected step is arranged at the front end of the press ring; a gap is formed in the cleaning ring; and a fixed sleeve is arranged outside the cleaning shaft, the cleaning shaft is slidably connected in the fixed sleeve, a guide groove penetrating through the gap in the cleaning ring and forming smooth transition is formed in the periphery of the cleaning shaft, a notch penetrating through the gap is formed in the annular step, a scraping block is arranged at the inner side of the fixed sleeve, and one end of the scraping block is embedded into the guide groove. The device timely cleans up oxide shells accumulated in the gap, so that the cleaning ring normally shrinks and deforms in an extrusion barrel.

The invention relates to a device and method for preparing a copper-clad aluminum wire through laser welding. The device comprises a first straightening assembly, a water cooling assembly, a cladding assembly, a welding assembly, a polishing assembly, a second straightening assembly, an aluminum rod, a surface polishing and brushing assembly, a wiping assembly, a cleaning assembly, rollers, a copper plate, a continuous pulling assembly and a flaw detection assembly; the rollers are rotatably arranged on the two sides of the copper plate; the cleaning assembly, the wiping assembly and the surface polishing and brushing assembly are sequentially arranged on one sides of the rollers; the second straightening assembly and the polishing assembly are arranged on the aluminum rod; the coating assembly is arranged on the same side of the surface polishing and brushing assembly and the polishing assembly; and the welding assembly is arranged on the other side of the cladding assembly. The device is high in automation degree, and the problem of surface damage of copper-clad aluminum can be effectively solved; the welding process is stable, the weld surface and internal quality are good, and the performance is high; and the device is green, environment-friendly, pollution-free, free of interference of electric and magnetic fields and free of vacuum protection.

The invention discloses an oxide shell treatment device for a reverse extrusion machine, and relates to the field of machining. The oxide shell treatment device comprises a cleaning shaft and a cleaning ring, wherein a screw rod is arranged on the end part of the cleaning shaft, one end of the screw rod is fixed to the tail part of the cleaning shaft through an anti-rotation mechanism, and the screw rod and the cleaning shaft are coaxial; a press ring is arranged at the other end of the screw rod, the cleaning ring is arranged on the outer wall of the press ring, a location key axially extending is arranged between the press ring and the cleaning ring, and an annular projected step is arranged at the front end of the press ring; a gap is formed in the cleaning ring; and a fixed sleeve is arranged outside the cleaning shaft, the cleaning shaft is slidably connected in the fixed sleeve, a guide groove penetrating through the gap in the cleaning ring and forming smooth transition is formed in the periphery of the cleaning shaft, a notch penetrating through the gap is formed in the annular step, a scraping block is arranged at the inner side of the fixed sleeve, and one end of the scraping block is embedded into the guide groove. The device timely cleans up oxide shells accumulated in the gap, so that the cleaning ring normally shrinks and deforms in an extrusion barrel.

The invention discloses a self-operated enclosure structure energy storage system based on gas-liquid-solid-liquid coupling phase change. The self-operated enclosure structure energy storage system comprises a wall body and an energy storage ring pipe system installed in the wall body, wherein the wall body comprises an outer side wall base body layer, a heat preservation layer and an inner side wall base body layer which are sequentially arranged from outside to inside; the energy storage ring pipe system comprises an outdoor side temperature wrap installed in the outer side wall base body layer; an indoor side temperature wrap is installed in the inner side wall base body layer; and the outdoor side temperature wrap and the indoor side temperature wrap are filled with gas-liquid phase change materials and communicate through a summer energy storage pipe and a winter energy storage pipe. According to the self-operated enclosure structure energy storage system, the positions of the phase change materials can be automatically adjusted according to the season and the indoor and outdoor temperature difference, and therefore the problem that in the prior art, the energy saving benefits of the phase change materials cannot be obtained to the maximum degree is solved.

The invention discloses an environmental concrete purifying system for a eutrophic water body. The system comprises an environmental concrete purifying unit, wherein the environmental concrete purifying unit comprises a box body, an environmental concrete permeable layer, a plant and an environmental concrete adsorption matrix; the environmental concrete permeable layer is arranged at the top of the box body and communicated with the inside of the box body; the environmental concrete permeable layer is composed of environmental concrete; the plant is grown in the environmental concrete permeable layer, and the root system goes through the environmental concrete permeable layer and reaches the inside of the box body; the environmental concrete adsorption matrix is composed of environmental concrete and arranged in the box body; the environmental concrete is prepared from gravel, cement, silicon dioxide micro powder, a water reducing agent and water in a weight ratio of (1500-1700):(250-300):(30-40):4:(50-80); and the permeability coefficient of the environmental concrete is greater than or equal to 1cm / s, the compressive strength is higher than or equal to 15MPa, the communication porosity is 20-30%, and the communication porosity means that the pores are communicated up and down in the environmental concrete permeable layer. The system disclosed by the invention can be used for effectively purifying the eutrophic water body while the energy consumption is low and the system is easy to operate and durable in use.

The invention relates to a method for removing cap layer in a SiC nanostructure prepared by anodization, which belongs to the technical field of a material. The method comprises a step of pre-etchingwith a saturated NH4HF solution before etching by an etching solution taking a SiC wafer as an anode. The method can effectively remove the cap layer produced in the process of preparing the SiC nanostructure prepared by anodization, has simple and controllable process, and has good repeatability, the method is simple, the cap layer automatically falls off, no external force is required, and the removal efficiency is high. The method for removing the cap layer also reduces the morphology of a top surface of the SiC nanostructure obtained by anodization, openness is improved, and the performance of SiC nanostructure is increased. In addition, the method of removing the cap layer requires no additional equipment, and shortens the etching time and reduces the cost.

The invention provides a method for preparing civilian use magnetic fluid. The method comprises the following steps: (1) Adding Fe2+, Fe3+ salt to a flask with three necks, and diluting the total iron concentration to 0.5-2 mol / L; (2) Heating to 40 DEG C under the condition of the mechanical agitation speed for 700-1500r / min; (3) Adding the dense alkali liquid of 20-50 ml after stirring for 10-40 min at 40 DEG C, and stirring for 20-90 min; (4) Heating to 60-95 DEG C and adding the surface-activeagent of 1-5 ml, and stirring; (5) Stirring continues after adding the base fluid soluting with the organic antioxidants , and stirring after adding the separating agent, and cooling down to ambient temperature after adding organic metal salt solution, by mass or weight, accounting for 5-20% of the base fluid, and separating with a magnet. The method has the advantages of: (1) Being high in security and stability; (2) Being environment-friendly and reliable; (3) Being safe and controllable in production process.

The invention involves the field of chamfering detection, especially a kind of iron boron magnetic circle chamfer detection agency, including transport rails, side pressure mechanisms, upper pressure tight mechanisms, chamfering detection agencies, and blocking mechanisms;The discharge end is under the side of the feeding end of the transmitting track, respectively, and the tightness mechanism and chamfering detection mechanism are provided, and the upper part of the feed end of the transmitting rail is provided with an upper pressure mechanism; the transmitting rail material end has a blocking mechanism.By setting up the two secondary slides and the first skateboard, the second skateboard and the first skateboard can move separately. At the same time, under the action of the reset spring, the detection block on the second skateboard can be closely fitted in the backward angle.In the same way, improve the reliability of chamfering detection and reduce the error of detection.