837results about How to "Easy to take away" patented technology

The invention discloses a die release agent. The die release agent comprises the following components in parts by weight: 5-15 parts of die release powder, 1-10 parts of an oil compound, 0.1-1 part of an emulsification agent, 70-90 parts of a solvent, 0.1-1 part of a defoaming agent and 0.1-5 parts of graphene. The invention provides a preparation method of the die release agent. The preparation method of the die release agent comprises the following steps: emulsifying the die release powder, the oil compound, the emulsification agent, the defoaming agent, the solvent and the graphene to obtain the die release agent. According to the die release agent, the graphene can be used for enabling the die release agent to form a relatively thin, hard and dense coating on the surface of a cavity, so that the direct contact between sand and a die can be effectively isolated; the die release agent is relatively good in extensibility, film formation property and adhesive force. In addition, a casting part prepared by the die release agent is relatively high in precision.

The invention designs an automatic article depositing-withdrawing machine and a use method of the automatic article depositing-withdrawing machine, to solve the technical problem that a delivery man must contact with a recipient face to face when delivering. The machine provided by the invention comprises a box body and a main computer arranged in the box body, wherein the outer surface of the box body is provided with an input device connected with the main computer through signal transmission; the box body is provided with a plurality of storage cabinets with doors; each storage cabinet is provided with an automatic door opening device electrically controlled by the main computer; and the main computer is provided with a network module. The machine provided by the invention is rational in layout, and reaches the purpose of automatically depositing and withdrawing the articles, avoids the face-to-face contact between the delivery man and the recipient, saves the time of the delivery man and improves the working efficiency; the machine provided by the invention helps the recipient to automatically schedule to take away the articles; the machine provided by the invention runs stably, mistakes are not easily made, the machine provided by the invention detects the storage cabinets and door locks of the storage cabinets in real time so as to avoid missing the articles and prevent the doors from being unlocked in time.

The invention discloses a cold-proof drought-resistant cultivation method for potatoes, and relates to the technical field of potato cultivation. The cultivation method comprises the following steps: selecting varieties, processing potato seeds, preparing soil and ridging, sowing and applying a fertilizer, laying a trickle irrigation pipeline and watering, laminating a film and covering soil, taking cold-proof measures, preventing and controlling plant diseases and insect pests, harvesting and grading. Compared with a normal no-tillage cultivation and straw covering cultivation technology, the cold-proof drought-resistant cultivation method for potatoes disclosed by the invention does not need to use straws for planting the potatoes, so that the production raw materials and the artificial operation cost are reduced, the cold-proof drought-resistant effects are good, and high-quality products are produced. Moreover, a green potato rate and morbidity are obviously reduced, the goods potato rate of the potatoes and the yield are increased, so that the economic benefits are remarkable.

The invention discloses a gate device with the functions of laminated dielectric stack and missing recovery, comprising a shell with a note inlet port passage, a gate and a gate driving mechanism, and the gate driving mechanism is electrically connected with a control system, wherein the gate device also comprises a stack recovery mechanism; the stack recovery mechanism comprises a note stack plate, a note stack plate bracket, a note stack plate driving mechanism and a detecting sensor set; the note stack plate driving mechanism is electrically connected with the control system, is arranged on the shell and is connected with the note stack plate bracket; the note stack plate bracket is pivoted on the shell; the note stack plate is connected to the note stack plate bracket and arranged on the note inlet port passage; the detecting sensor set is connected with the shell corresponding to the note stack plate and electrically connected with the control system; and a hollow recovery passage is formed in the shell below the note stack plate. The gate device can orderly stack and array bank notes, is convenient for customers to take out the bank notes and recovers bank notes missed by the customers or abnormal bank notes, thereby ensuring the security of the bank notes.

The invention provides a ceramic / metal composite material brake lining for a high-speed train and a preparation method of the ceramic / metal composite material brake lining, and belongs to the technical field of high-speed brake. The existing high-speed train brake lining has the defects that the thermal stability is poor, the friction factor is low, the abrasion rate is high, the thermal decay resistance is poor, and the service life is short. The ceramic / metal composite material brake lining comprises friction blocks, a base plate and a heat radiation fin, wherein the friction blocks are made of ceramic block reinforced metal composite materials, the gap width among the friction blocks is 3 to 8mm, the ceramic block is obtained through sintering ceramic posts of a certain rule and connected ceramic biscuits of ceramic substrates connected with the ceramic posts, and the connected ceramic biscuits can be formed in modes of slurry filling, gel mold filling, molding pressing, isostatic pressing and the like. The preparation method provided by the invention comprises the following steps including ceramic block sintering, surface treatment, brake lining casting, precise processing and heat treatment. The ceramic / metal composite material brake lining has the characteristics that the thermal stability is good, the friction factor is high, the abrasion rate is low, the thermal decay resistance is good, the service life is long, and the like, and the effective braking can be realized on 380km / h high-speed trains.

The invention relates to a stirring cup with a vacuum-pumping function. The stirring cup comprises a stirring cup body, wherein the stirring cup body is connected with a vacuum-pumping device, the vacuum-pumping device comprises an air pumping cylinder body and a base, and the air pumping cylinder body is matched with the base and slides axially; an air pumping cavity is formed in the base, a first venting hole communicated with the interior of the stirring cup body is formed in the bottom of the air pumping cavity, and a venting plug is arranged on one side of the first exhaust hole; the interior of the air pumping cylinder body is communicated with the upper part and the lower part of the air pumping cavity in an alignment way to form a vacuum-pumping chamber, and a one-way air guide structure which can vent air under pressure in the vacuum chamber outwards is arranged between the inner wall of the air pumping cylinder body and the air pumping cavity. The invention aims at providing the stirring cup with the vacuum-pumping function which is simple in structure and convenient in use and a food processer; the air in the stirring cup is pumped by the vacuum-pumping device, so that the stirring cup is in a vacuum state, so as to be beneficial to stirring of a stirrer and fresh keeping of juice; the stirring cup is convenient to carry and has good sealing property.

The invention discloses a differential conveying security check system which comprises a security check machine and a power conveying device. The power conveying device is in butt joint with the inlet of a belt conveyor. The power conveying device and the belt conveyor are located on the same horizontal plane and identical in conveying direction. The conveying linear speed of the power conveying device is smaller than that of the belt conveyor. Luggage parcels are conveyed to the belt conveyor through the power conveying device. The belt conveyor quickly increases the distances between the adjacent luggage parcels. The differential conveying security check system can quickly increase the distances between the luggage parcels which are compactly stacked in the prior art, and the luggage parcels enter a detector as a queue at certain intervals one by one, so that the defect that in the conveying process of an existing security check machine, luggage parcels are stacked is overcome, image uniformity of luggage parcels which pass through the security check machine each time is guaranteed, the check leakage phenomenon is effectively avoided, and the abnormal luggage parcels can be conveniently checked.

The invention discloses a rotary disc type automatic stacking and loading and unloading device which comprises a main control unit, a material-carrying rotary disc and an automatic moving and carryingassembly; the material-carrying rotary disc is connected with rotary disc rotating driving units; to-be-machined product placement racks and machined product placement racks are arranged on the material-carrying rotary disc; adjustable placement bottom plates are arranged in machined product placement cavities; the automatic moving and carrying assembly comprises a loading manipulator, an unloading manipulator, a moving and carrying base frame, a horizontal guide rail, a moving and carrying horizontal driving unit and a moving and carrying lifting driving unit; the loading manipulator and theunloading manipulator are assembled on the moving and carrying base frame so as to shift along with the moving and carrying base frame; the main control unit is connected with the rotary disc rotating driving unit, the moving and carrying horizontal driving unit and the moving and carrying lifting driving unit correspondingly; and the main control unit is connected with a counting unit. Hence, automatic loading and unloading are realized, the manpower is saved, the rotary disc type automatic stacking and loading and unloading device runs stably and reliably, the counting is accurate and manual errors are avoided.

The invention discloses a fluidized bed type jet milling and modifying system and application thereof. The fluidized bed type jet milling and modifying system comprises an air compressor, a heater, a jet milling and grading device, a cyclone separator, a bag collector, an induced draft fan and an atomizing nozzle. The jet milling of powder material carried by hot air is conducted; the atomizing nozzle is used for atomizing a surfactant solution and then injecting the surfactant solution into a milling cavity; the hot air is used for drying the material continuously and simultaneously providing a certain environment temperature for the coating reaction of surfactants on the surface of the material, so that the surfactants are relatively liable to crosslink and form films on the surfaces of powder particles, thereby achieving the effect of milling and modifying simultaneously. An integrated process for milling and modifying ultrafine powder is provided; the fluidized bed type jet milling and modifying system is mainly used for solving the agglomeration phenomenon caused by increase of surface energy of the powder in the ultra-fining process; the fluidity of the powder is improved, so that the high operational performance of the powder can be retained.

The invention relates to a silicon wafer fine polishing combined solution capable of inhibiting particle deposition and a preparation method thereof, belonging to the field of CMP (chemical mechanical polishing). The silicon wafer fine polishing combined solution capable of inhibiting particle deposition is prepared by using silicon dioxide / water-soluble polymer composite abrasive particles, hydroxyl-containing and / or amino-containing surface protecting agent, alkali compound, surfactant and deionized water. The pH (potential of hydrogen) of the silicon wafer fine polishing combined solution is 8-12. Compared with the prior art, the deposition of particles is effectively inhibited, and the precision and the quality of polished silicon wafer surfaces are improved. The silicon wafer fine polishing combined solution provided by the invention has the advantages that the used raw materials are easy to obtain, the silicon wafer fine polishing combined solution is pollution free, the requirements on environmental protection are satisfied and the large-scale industrial production is easy to realize.

The invention discloses a production process of a high-uniformity high-viscosity SSP polyester chip, belonging to the technical field of chemical fiber production and comprising the following steps of: (1) precrystallizing: respectively feeding polymerized and input chips the viscosity of about 0.67dl / g into two parallel precrystallizer from the upward side of the precrystallizers, and supplying hot air with the temperature of 177 DEG C from the downward side thereof, and then crystallizing for 12-15min and then outputting the chips from the crystallizers; (2) prereacting: feeding the chips output from the precrystallizers into a prereactor, wherein the upper part of the prereactor is additionally provided with a ridge-type reactor, and the viscosity of the chip output from the prereactor can reach 0.82dl / g; and (3) final polycondensation reaction: the maximum viscosity value of the chips output from a polycondensation reactor can reach 1.09dl / g. The invention optimizes the traditional SSP process flow, i.e. controls a precrystallizing process, a prereacting process and a final polycondensation process, thereby effectively ensuring the successful preparation of the high-uniformity high-viscosity polyester chip.

The invention relates to a sliding lever-type metering and control device for irrigation water quantity. The sliding lever-type metering and control device comprises a water passing tank, a gate on-off device, electromagnetic locks, a travel switch and a controller. The water passing tank is installed in a ditch revetment, two sides of which are provided with a water inlet gate and a water outlet gate. The gate on-off device comprises a sliding lever, a lever support, a balancing weight, a water leakage tank, a buoyancy drum and a support rod. The middle portion of the sliding lever is provided with a U-shaped groove and one side of the sliding lever is provided with the balancing weight. The sliding lever is fixed onto the lever support by means of a rotary shaft. Two ends of the lever are connected with two gates by means of a steel wire rope. The electromagnetic locks and the travel switch are fixed at the top of the water flowing tank. The controller is fixed at the top of the water passing tank and connected with the travel switch and the electromagnetic locks. The controller receives a triggering signal of the travel switch and is capable of controlling on-off of the electromagnetic locks.The sliding lever-type metering and control device for irrigation water quantity has following advantages: the sliding lever-type metering and control device is simple in structure and accurate in metering and used for metering and automatic control of the irrigation water capacity of a single piece of farmland in favor of improvement on utilization efficiency of water resources and automated control over irrigation water quantity.

The invention relates to a positive-negative pressure ventilation drying cylindrical silo. Currently, a dryer is widely used for drying. However, according to the drying method of the dryer, the energy consumption is large, cost is high, the mechanical damage to rice after drying is large, the breaking rate is increased, the quality is poor, the head rice rate is reduced, the taste is poor, and the processing quality and the edible quality of rice are effectively influenced. A main body silo and a matched applicable device which are capable of drying a grain layer through the natural wind and the low temperature in a ventilating mode are designed to solve the problems. The positive-negative pressure ventilation drying cylindrical silo comprises a silo ceiling (1), a silo body (2) connected with the silo ceiling (1), a base (3) connected with the silo body, externally looped ventilation cages (4) fixed on the inner wall of the cylindrical silo, a central ventilation cage (5) installed in the cylindrical silo, wherein the external annular ventilation cages are evenly distributed in an annular shape. The ventilation cages comprise the externally looped ventilation cages and the central ventilation cage, wherein the externally looped ventilation cages and the central ventilation cage are respectively connected with a fan (6). A positive-pressure drying mode or a negative-pressure drying mode is used for achieving mechanical ventilation drying of grain.

The invention relates to waterborne glass nano-paint containing composite nanometer nuclear particles and preparation. The paint is prepared from composite metal nanometer nuclear particles, nano-silicon dioxide modified by fluorinated alkyl silane, nano-silicon dioxide coated by nano-titania, organic silicon molecules modified by acrylic ester, modified nano-titania, waterborne polyurethane resin / polysiloxane resin composite resin, an additionally adsorbed adjuvant and other auxiliary ingredients. By certain modification and combination of composite nanometer nuclear particle ingredients andother ingredients, the performance of the paint is expanded, by mutual synergy between the ingredients, the coating material shows excellent properties, has excellent effects of high light transmitting performance, heat insulation performance, ultraviolet isolation / absorption performance, high adhesiveness, anti-aging stability, water dredging, dust prevention and self cleaning, and further has anintelligent energy-saving effect specific to environmental temperature.

The invention relates to a refrigerating appliance comprising a housing (2, 3) that encloses an interior space. According to the invention, a shelf (1) can be mounted at different heights on walls (2) of the housing by means of brackets (8) that are each joined to one of the walls (2) in a manner that enables them to pivot about a first axis (A1) and joined to the shelf (1) in a manner that enables them to pivot about a second axis (A2) that is offset with regard to the first axis (A1).

The invention relates to pesticide stirring equipment and particularly relates to stirring equipment of a plant protecting unmanned aerial vehicle for spraying a pesticide, which has time- and labor-saving effects, stirs the pesticide sufficiently and thoroughly, and prevents people from inhaling toxic gas in the stirring process. In order to solve the technical problems, the stirring equipment comprises a bottom plate, a bracket, a connecting plate, a stirring box and the like; the left side of the top of the bottom plate is connected to the bracket by way of bolt connection, and the right side of the upper portion of the bracket is connected to the connecting plate by way of bolt connection. A first stirring device is driven by the driving device to stir the pesticide and clean water. The stirring equipment is also provided with an air stirring device, so that the pesticide and clean water stirring effect is further improved, and the effects that the stirring equipment has time- and labor-saving effects and stirs the pesticide sufficiently and thoroughly, and people are unlikely to inhale toxic gas in the stirring process are achieved.

The invention discloses and provides return line type self-calibration camera assembly equipment which is simple in structure, can achieve modularization and has the stable, efficient and precise camera calibrating function. The return line type self-calibration camera assembly equipment comprises a belt production line, and a loading module, a plasma cleaning module, a glue dispensing module, a camera automatic calibrating module and an unloading return module which are arranged beside the belt production line in sequence; a carrier is arranged on the belt production line; the camera automatic calibrating module comprises a six-axle platform manipulator; a jaw of the six-jaw platform manipulator is positioned above the carrier; a turn-back mirror module is arranged above the jaw; the turn-back mirror module comprises a turn-back mirror fixed plate and multiple turn-back mirrors; a through groove is formed in the middle part of the turn-back mirror fixed plate; and the multiple turn-back mirrors are uniformly arranged at the lower part of the side wall of the through groove. The return line type self-calibration camera assembly equipment can be applied to the technical field of thecamera assembly industry.

The invention discloses a composite anti-salt agent, which mainly comprises a ferrocyanide solubilizer A and a complexone B, and can further comprise a polymer lattice modifier C and / or water. According to the present invention, the composite anti-salt agent has a synergistic effect, wherein the ferrocyanide solubilizer A in the composite anti-salt agent can substantially increase the solubility of the salt, and provides the main effect of the composite anti-salt agent, the complexone B in the composite anti-salt agent has good complexation effects on metal ions and can change the metal ion concentration of the salt crystal so as to reduce the solubility product of the salt crystal, and the polymer lattice modifier C can change the compact structure of the salt into the loose structure soas to make the salt be easily carried away by the flowing of the solution. According to the present invention, the composite anti-salt agent can provide excellent salt crystallization prevention effect on salt solutions with highly mineralized sodium chloride, and further can provide good salt release effects on salt solutions with highly mineralized sodium chloride, calcium chloride and magnesiumchloride.

The invention discloses a settling artificial releasing device. Through the provided settling artificial releasing device, on the one hand, the problem that since shellfish seeds can be carried away by ocean currents easily before attachment of the shellfish seeds is achieved, the shellfish seeds are distributed to a seabed area unsuitable for the attachment and growth of the shellfish seeds, andthe survival rate of the shellfish seeds is reduced can be effectively solved; on the other hand, the problem that a net-shaped tank cover can not be opened or be opened prematurely due to poor sealing can be effectively solved. The settling artificial releasing device includes a floating ball, a balancing weight, a shellfish temporary-keeping tank and a plurality of trigger mechanisms, wherein the shellfish temporary-keeping tank is defined by a bottom plate, a top plate and four surrounding side plates, and the lower edges of the four surrounding side plates are connected with the bottom plate through articulated shafts in a hinged mode respectively; the top plate comprises connecting frames, which are arranged between every two of the four surrounding side plates, and a cover plate which is arranged above the connecting frames and connected with the connecting frames, the balancing weight is connected with the bottom plate through a lower connecting rope, and the floating ball is connected with the cover plate through an upper connecting rope; a one-to-one correspondence exists between the trigger mechanisms and the four surrounding side plates.

The invention provides a method for manufacturing a liquid crystal panel. The method comprises: two mother boards are provided; the two mother boards are jointed with each other; the two jointed mother boards are irradiated by laser; and the area irradiated by laser is cooled by a refrigerant which contains supercritical fluid. The invention also provides a method for cutting a base plate.

The invention provides an epoxy resin composition for a prepreg, a preparation method thereof, and the prepreg. The epoxy resin composition includes a component A and a component B, wherein the component A comprises solid epoxy resin and a toughening agent, and the component B includes liquid epoxy resin, a dicyandiamide curing agent, an imidazole curing agent, and a urea-type accelerant. The weight ratio of the dicyandiamide curing agent, the imidazole curing agent to the urea-type accelerant is 1:2:1.5-1:7.5:1.5. The epoxy resin composition effectively increases minium viscosity retention time and improves gelatinization time, so that process time window is greatly prolonged. The prepreg is free of glue starvation and has perfect performances and excellent mechanical performances. The preparation method has simple processes and is easy to carry out.

The invention relates to a preparation device. The preparation device comprises a bottom plate, a left frame, a first fixed plate, a first motor, a mounting platform, a rotating plate, a first connecting rod, a second connecting rod, a material pushing cylinder, a piston, a second motor, a first belt wheel and the like; the second motor and the first fixed plate are arranged on the right side of the left frame; the second motor is positioned above the first fixed plate; a first ratchet wheel and the first belt wheel are arranged in front of the second motor; the first ratchet wheel is positioned behind the first belt wheel. The preparation device achieves the effects of high uniform mixing precision, simple structure and high preparation speed, can start a third motor to rotate positively and negatively and can move left and right when driving a spring and a steel bead to rotate.

The invention provides a moving-magnetic type linear motor which mainly comprises a stator and a rotor, wherein the stator comprises two yoke supporting rings in the shape of a circular ring, and at least four strip-shaped stator yokes which are uniformly distributed along the circular ring are arranged between the two yoke supporting rings; the inner surface of each stator yoke is in a tooth socket structure which comprises N stator teeth; a coil is coiled on the tooth socket structure; after the coil is electrified, adjacent stator teeth form opposite magnetic poles; the rotor is positioned in a cylindrical cavity surrounded by the stator yokes; for each stator yoke, the rotor has N-1 magnetic poles which are axially arranged in parallel, the magnetic lines of the magnetic poles are distributed in the radial direction, and the polarities of adjacent magnetic poles which are arranged at intervals are opposite; and the rotor is connected with a plate spring through a connection shaft. The moving-magnetic type linear motor reduces the magnetic leakage loss, improves the permanent magnet efficacy, has good radiating effect and simple and compact structure, and is convenient in installation and maintenance.

The invention belongs to the field of coatings and discloses fluorine-containing titanium sol, an inorganic silicate coating and a preparation method thereof. The fluorine-containing titanium sol hasa structure shown in the formula I, wherein Rf represents a fluorine-containing alkyl group with a C1-8 carbon atom chain and -O represents a -Si-O or -Ti-O repeating structural unit. The inorganic silicate coating comprises, by weight, 100 parts of an inorganic silicate solution, 2 to 30 parts of fluorine-containing titanium sol, 5 to 50 parts of silica sol, 0.5 to 5 parts of small molecule organosiloxane, 10 to 100 parts of water, 15 to 65 parts of a filler, 5 to 40 parts of a pigment, 0.5 to 3 parts of a defoamer, 0.5 to 3 parts of a dispersant and 0.5 to 3 parts of a wetting agent. The coating can be used through roll-coating, spray-coating and brush-coating technologies, has the surface contact angle of 110-145 degrees, has good water resistance and alkali resistance, prevents alkaliresistance abnormity in 48h, has excellent washability (for preventing bottom exposure after washing by 1200 times) and can be widely used in the field of high anti-fouling and self-cleaning buildingmaterial surface coatings.

The invention provides a press-fitting device of a battery cover cap. The device comprises an operation table, a conveyor belt is arranged on the operation table, a pressing and fitting table frame which extends along the direction of the conveyor belt is arranged above the conveyor belt, a clamping block is arranged on the inner wall of the press and fitting table frame, the clamping block is provided with at least one clamping hole allowing a spiral screw rod to penetrate through, and the spiral screw rod is connected with a press fitting head; and a supporting column is arranged on one side, of the conveyor belt, behind the press fitting head in the direction of the conveyor belt, a sucking head which is capable of being telescopic is arranged on the supporting column, and a plurality of battery fixing devices are further arranged on the conveyor belt. By adopting of the design, the automation degree is more accurate and efficient on the basis that automation electric appliance elements are reduced as much as possible, so that manufacturing cost and maintenance cost are indirectly reduced.

The invention relates to a positioning device which comprises a box body, a lifting plate arranged in the box body and a sliding block slidably arranged in the box body. A plurality of through holes are formed in the box body. Pins penetrating through the through holes are arranged on a first surface of the lifting plate in a protruding mode. A linkage block is arranged on a second surface of the lifting plate in a protruding mode. Guide columns and elastic pieces used for being connected with the lifting plate are arranged in the box body. The lifting plate is slidably arranged along the guide columns. Oblique faces which slide in a matched mode are arranged on the sliding block and the linkage block respectively. According to the positioning device, the oblique faces which slide in the matched mode are arranged on the sliding block and the linkage block respectively, so that when the sliding block moves towards the linkage block, the lifting plate is driven to overcome the resistance of the elastic pieces so that the pins can be driven to retract towards the interior of the box body, a mobile phone middle frame positioned on the box body can be separated from the pins through the pins, the mobile phone middle frame can be taken away easily, and the situation that the positioning accuracy of the mobile phone middle frame is affected due to the fact that the mobile phone middle frame and the pins are matched loosely is avoided.

The invention relates to a charger assembly machine. The charger assembly machine comprises a rotation disc, a main body feeding station, a circuit board feeding station, a cover plate feeding station, a cover plate pressing mechanism, a testing mechanism, an ultrasonic welding mechanism, a laser marking machine, a discharging station, clamping mechanisms, a divider, a division motor and the like.According to the charger assembly machine, the clamping mechanisms are arranged below jigs in all the feeding stations and discharging stations respectively so that movable clamps in all the stationscan be opened under driving of the clamping mechanisms, convenience is provided for feeding, the overall structural design of the charger assembly machine can be adopted for automatically completinga series of operation such as assembly, testing, welding, marking and character carving on a charger on one device, and the charger assembly machine has the advantages of being high in assembly efficiency and assembly precision and capable of achieving a good assembly effect. The charger assembly machine effectively solves the problems that since a traditional manual operation mode is adopted forassembling the charger, the charger is low in assembly efficiency and assembly precision and has a poor assembly effect, and the labor intensity of workers and the labor cost of enterprises are high.

The invention relates to laser welding equipment with high safety. The laser welding equipment comprises a worktable, a base, a top plate, a lifting device, a lifting plate, a welding head and two struts, and further comprises a protection mechanism and two cleaning mechanisms, wherein the protection mechanism comprises a moving plate, a first spring, two connection assemblies, two drive assemblies and four protective plates, each cleaning mechanism comprises a fixed box, an airbag, a pressing plate, a second spring, an air inlet pipe, a connecting pipe, a connecting box, a fixing rod and tworeciprocating assemblies. According to the laser welding equipment with high safety, the protection mechanism is arranged, so that the protective plates can protect the worktable and the welding headfrom the four sides of the worktable during welding, and the sparks generated during welding are prevented from splashing onto users, thus improving the safety of the equipment; and a dust removal mechanism is arranged, dust impurities on workpieces can be blown away, so that the cleaning function is realized, and the impurities on the workpieces is prevented from affecting the welding effect.

The invention discloses a grid plate type water metering and control device applicable to field irrigation. The device is characterized by comprising a water passing box (3), a water inlet gate (4), a water-permeable grid plate (8), an electromagnetic lock (5), a controller (6) and a linear displacement sensor (7). The water passing box (3) is installed in a ditch slope (1), the water inlet gate (4) is installed on the water inlet side, the water-permeable grid plate (8) is installed on the water outlet side, the linear displacement sensor (7) is installed on the top of the water outlet side of the water passing box (3), the controller (6) is fixed to the top of the water passing box (3) and is connected with the linear displacement sensor (7) and the electromagnetic lock (5), and the controller (6) receives the signals of the linear displacement sensor (7), and can also control the electromagnetic lock (5) to be opened and closed. The grid plate type water metering and control device applicable to field irrigation has the advantages of being simple in structure, accurate in metering, wide in measuring range, capable of achieving remote automatic control easily and the like, and is particularly applicable to accurate metering of and control over the water consumption of field irrigation.

The invention discloses a rotary releasing device for protecting young shellfishes and aims to effectively prevent young shellfishes from being easily carried away by ocean current before attachment and from being distributed to sea-bed areas not suitable for young shellfish attachment and growth, and reduce the survival rate of the young shellfishes. In addition, the rotary releasing device for protecting young shellfishes is simple in structure, can effectively avoid the problem that a cover plate cannot be opened or be opened in advance and comprises a base, a culture net cylinder rotatably arranged on the base through a horizontal shaft rod, a first partition plate arranged in the culture net cylinder and dividing the inner cavity of the culture net cylinder into a first cavity and a second cavity, a second partition plate arranged in the first cavity and dividing the first cavity into a culture cavity and an empty cavity, a release opening formed in the outer side face of the culture net cylinder and communicated with the culture cavity, a seal cover plate arranged on the outer side face of the culture net cylinder and used for sealing the release opening and a net cylinder limiting structure arranged on the base.