116results about How to "Save processing cost" patented technology

The invention relates to an automatic constant-temperature high-definition dyeing device. The device comprises a shell and a dripping-dyeing module; the dripping-dyeing module comprises multiple dyeing warehouse units, and a dyeing cavity is arranged at each dyeing warehouse unit; slide guide slots are arranged at a left sidewall and a right sidewall of each dyeing cavity; the slide guide slots guide and position the slides, a liquid inlet and drainage hole is arranged at the bottom of each dyeing warehouse unit, and the liquid inlet and drainage hole is connected with a liquid inlet and drainage pipe; the dripping-dyeing module further comprises a middle cover body and an upper cover body, and the slide insertion openings with the same amount of the dyeing warehouse units are arranged on the middle cover body, and the slide insertion openings are corresponding to the dyeing cavities one by one and used for the insertion and guidance of the slides; the upper cover body is covered at an upper side of the middle cover body, and each dyeing warehouse unit is located in the shell. Through the automatic constant-temperature high-definition dyeing device provided by the invention, the simultaneous dyeing operation on the multiple slides can be accomplished by inserting multiple slides at a time, the efficiency is greatly improved; when the slides are inserted, an operation of distinguishing the positive and the negative is unnecessary, and the operation is convenient.

A method for continuously producing fuel oil from waste lubricating oil is featured as carrying out treatment of stewing, setting, dewatering and impurity removing for raw material oil to separate out water and mechanical impurities, adding absorbent, catalytic cracking catalyst, molecular weight regulator, sending raw material oil with overheated steam into tube heater after heat exchanging and separating oil gas from heater outlet with fractionating column for obtaining different fue oil.

The invention discloses a selective laser melting single-knife two-way powder laying device. A scraping knife holder body is of a hollow structure with an upper opening and a lower opening. A powder feeding unit and a scraping knife mounting frame are both located in an inner cavity of the scraping knife holder body. The powder feeding unit comprises a powder feeding plate which can move relative to the scraping knife holder body in the powder laying direction. A powder storage tank is formed among the powder feeding plate, the scraping knife holder body and the scraping knife mounting frame. A powder falling channel is formed between the scraping knife holder body and the scraping knife mounting frame. The powder laying device moves towards one side to the space between the powder feeding unit and the whole scraping knife holder body, relative displacement occurs, the powder storage tank is opened, and powder falls to one side of a scraping knife along the powder falling channel; the whole scraping knife holder body moves reversely, and the powder storage tank is closed; and finally the whole scraping knife holder body and the powder feeding unit both move to the other side, and then powder laying is started. The invention further discloses SLM equipment comprising the powder laying device. The selective laser melting single-knife two-way powder laying device achieves the functions of two-way powder laying and automatic powder falling through one scraping knife, cost is reduced, and no powder pollution is ensured.

The invention discloses a piezoelectric composite material and a preparation method thereof. The piezoelectric composite material comprises filling material and at least two layers of piezoelectric materials; based on the polarity of the piezoelectric materials in each layer, the piezoelectric materials in adjacent layers are arranged in reverse; the piezoelectric materials in each layer are arranged with three-dimensional communication; the filling material is arranged with one-dimensional communication; work face electrodes are respectively arranged on each work face of the piezoelectric composite material; in the section parallel to the work face of the piezoelectric composite material, the piezoelectric materials are communicated and arranged in the form of regular strip combination; the filling material is arranged in isolation. The product of the invention can be used for manufacturing multi-layer ultrasonic transducers and sensors, avoiding and solving the problem of inaccurate positioning of adjacent layers; besides, the process flow is simple with only two piezoelectric single-crystal cutting directions, thus saving processing time and cost.

The invention provides a manufacturing method of a mobile phone rear shell. The manufacturing method comprises the following steps: providing a composite film; forming a first camera mounting hole in the composite film; providing an injection mold including a front mold and a rear mold; arranging a suction groove and a suction device on the front mold; setting a locating piece, a first pitched roof and a second pitched roof on the mold core of the rear mold; arranging the composite film in the mold cavity of the front mold; adsorbing the composite film by virtue of the suction device; ejecting the composite film by virtue of the locating piece and the first pitched roof; injection-molding a required plastic main body by virtue of the injection mold; and forming a second camera mounting hole on the plastic main body. By arranging the locating piece and the first pitched roof on the mold core of the rear mold, the manufacturing method disclosed by the invention, besides locating the composite film, can be used for guaranteeing that locating holes of the locating piece and the first pitched roof formed on the plastic main body are covered by the composite film, so as to avoid the formation of through holes on the mobile phone rear shell and to effectively guarantee the exquisite appearance of the mobile phone rear shell. Furthermore, the invention also provides the mobile phone rear shell.

The invention provides artificial gemstones and a preparation method thereof. Polycrystalline transparent gemstone raw materials which are prepared by a powder preparation method are used as raw materials of the artificial gemstones. The preparation method of the artificial gemstones comprises the following steps: high-purity oxide micro powder which employs aluminum oxide, magnesium oxide, yttrium oxide, zirconium oxide, gadolinium oxide and gallium oxide as substrate raw materials is used; a proper amount of coloring metal oxides or metal salts are added, or coloring elements are not added; uniform mixing, moulding, sintering, cutting, engraving, polishing and burnishing are carried out, various monochromatic or polychromatic polycrystalline transparent colored gemstones with high refractive index and high hardness are prepared, or polycrystalline colorless transparent artificial gemstones with high refractive index and high hardness are prepared. The method has the advantages of low producing cost, relatively simple process, low production equipment investment and operation cost, easy realization of large batch production, flexible and changeable products, strong market competitiveness, etc.

The invention provides a liquid crystal display device, comprising a liquid crystal panel glass product set, a plurality of optical sheets, a rear shell and a mainboard component, wherein, the liquid crystal panel glass product set comprises liquid crystal panel glass and a driving circuit board; the invention is characterized in that: in the invention, the liquid crystal panel glass product set and the optical sheets which are used for realizing display function are sequentially superimposed and arrayed, and then are clamped and fixed by a clamping component matching the liquid crystal panel glass product set and the optical sheets or fixedly or movably buckled at the rear shell. The invention replaces a backboard and a central frame of the conventional liquid crystal panel with the rear shell to save the heavy backboard and central frame, and replaces a front frame with a clamping component; in the invention, the parts adopt a mode of separated superimposing and integrated clamping to greatly save product materials, reduce process steps and lower production cost; meanwhile, the thickness and weight of the liquid crystal display can be reduced, and requirement of thinness and lightness for the liquid crystal display can be well satisfied; furthermore, the invention overcomes optic structure positioning, shock-proof, skid-proof, radiation-proof and other problems caused by simplifying the structure.

The invention discloses a low-energy-consumption fork type four-way shuttle vehicle. The shuttle vehicle comprises a vehicle body, a telescopic fork and walking wheels, the plurality of walking wheelsare arranged on the periphery of the vehicle body, driving gears are further fixed on output shafts, the driving gears and driven gears are meshed with each other, the shaft end of the driven gears are connected with Y-direction driving shafts through universal joints, and Y-direction walking wheels are installed on the Y-direction driving shaft. The shuttle vehicle has the beneficial effects that the synchronous rotation of the X-direction walking wheels and the Y-direction walking wheels can be simultaneously driven by utilizing a single walking motor, so that energy consumption and processing cost can be saved; and in addition, the invention further discloses a corresponding jacking mechanism and a guide rail, so that the movement and the work of the four-way shuttle vehicle can be more stable.

The invention belongs to the technical field of plate machining, and particularly relates to a punching device for cutting and punching a plate. The device comprises an upper die holder and a lower die holder, wherein a guide column is fixedly arranged on the lower die holder; a guide sleeve for inserting the guide column is fixedly arranged on the upper die holder; the lower end face of the upper die holder is fixedly provided with a cutting-off male die; a punching male die is fixedly arranged on the upper die holder on one side of the cutting-off male die; the lower die holder just below the punching male die is fixedly provided with a female die with a horizontal supporting plane and a punching die cavity; the punching die cavity is used for inserting the punching male die; the cutting-off edge of the cutting-off male die is matched with the outer side wall of the female die to form a cutting-off surface. The punching device has the advantages that the structure is simple, the design is rational, cutting-off and punching of the plate can be performed at one time, the investment cost of equipment is reduced, and the machining efficiency can also be improved.

The invention relates to a method for processing an exhaust pipe flange and a special die thereof. The method utilizes a die to stamp, and dose not need lathe machining allowance. An insert which is sleeved at the periphery of an extruded punch is embedded in a stripper plate of the special die; and an insert end surface which is contacted with a workpiece is inwards concave to form a groove which is matched with a hole flanging of the workpiece. According to the method, lath machining is omitted, the die is directly used to stamp and form, through adjusting the technological parameters of a hole drawing process and the special die, the manner adopting a similar trimming structure to form is creatively proposed, so the working hours and processing cost are saved, and the production efficiency is improved. The special die has a simple structure, and solves the problem that the external diameter becomes larger during the reverse extruding process, and accordingly, the method of the invention is ensured to be realized.

The present invention provides solid state fermentation feed technology and a related high-efficiency safe biological fermentation feed. The technology includes the following steps: rapeseed meal, cottonseed meal and miscellaneous meal are pulverized, supplemented with wheat bran to be blended, and inoculated with a compound fermentation broth containing Saccharomyces cerevisiae, Bacillus subtilis, Aspergillus oryzae and Lactobacillus plantarum to be evenly mixed, the mixture is packed in a packaging bag with an antimicrobial safety film, and the packaging bag is sealed; and finally, the packaged mixture is transferred to a constant temperature fermentation room to be stacked, with the temperature of the constant temperature fermentation room maintained at 25-30 DEG C and the stacking fermentation time of 48-72 hours. The present invention is simple in production process, makes full use of the rapeseed meal, the cottonseed meal and the miscellaneous meal to perform biological fermentation, and the fermentation feed can reduce anti-nutritional factors, and is rich in nutrition.

The invention discloses a double-cylinder magnetorheological vibration reducer adopting coaction of an external coil and a permanent magnet. The double-cylinder magnetorheological vibration reducer comprises a magnetorheological vibration reducer body and a lifting lug; the magnetorheological vibration reducer body comprises a working cylinder, a liquid storage cylinder and a dustproof shell concentrically sleeved; a piston with a piston rod is matched in the working cylinder at intervals, and the working cylinder is fully filled with magnetorheological fluid; the liquid storage cylinder is filled with the magnetorheological fluid and compensation gas, and a liquid storage cylinder sealing mechanism and a base for sealing are fixedly arranged at the upper and lower ends; the top end of thepiston rod penetrates through the guide base and the liquid storage cylinder sealing mechanism in sequence, and extends out of the working cylinder to fixedly connect with the upper end of the dustproof shell; a magnetic exciting device is embedded in the dustproof shell; and an end cover is arranged at the lower end of the dustproof shell. The double-cylinder magnetorheological vibration reducerreduces the machining and assembly difficulty, saves the machining time and cost, prevents pollution of the magnetorheological fluid in the maintenance process, facilitates dissipation of coil heat,and prevents performance reduction caused by overheat of the magnetorheological fluid.

The invention discloses a multipoint needle valve. The multipoint needle valve solves the prior art problems of complex installation and dismounting, easy leakage of a valve needle sleeve, and difficult cooperation of a valve needle and a cast gate. Through a change of a valve needle structure, installation and dismounting are simplified and mold modification time is reduced. Through an integrated gas circuit of a system, processing of gas circuit holes in a mold plate is avoided; mold processing difficulty is simplified; and processing time and a cost are reduced. The multipoint needle valve effectively resolves the problem of leakage caused by a hot runner system, avoids production stopping caused by material leakage, improves operation stability of the whole hot runner system, controls raw material waste, effectively controls a precision of cooperation between a valve needle and a cast gate, and realizes beautification of a cast gate mark on the surface of a plastic product.

The invention provides a negative electrode piece, a preparation method thereof, a pouch lithium ion battery and a preparation method thereof. The negative electrode piece comprises at least one composite negative electrode piece. The composite negative electrode piece comprises a silicon-carbon negative electrode piece and a porous lithium foil. The porous lithium foil is press-bonded to at leastone surface of the silicon-carbon negative electrode piece. The negative electrode piece uses the lithium foil with a porous structure for pre-lithiation, can accurately control the use of the lithium foil according to the required pre-lithiation capacity, and greatly reduces the probability of lithium deposition caused by the excessive lithiation of the silicon-carbon negative electrode.

The invention discloses a method for designing the spatial arrangement of a foldable space-borne antenna multi-joint pointing mechanism. The method includes the following steps: determining known conditions, setting constraint conditions, determining a designing target, carrying out spatial arrangement design calculation, and obtaining the design result. According to the method, the design target is provided, spatial arrangement calculation is carried out in cooperation with extra constraint existing in the antenna practical folding process, and the design result can meet the requirements of pointing constraint and the requirements of position constraint in the spatial arrangement design of the large foldable space-borne antenna multi-joint pointing mechanism at the same time. By means of the method, while the requirements of the antenna pointing constraint and the requirements of antenna focal length constraint in the pointing mechanism are met, extra constraint conditions in the folding and unfolding processes of the pointing mechanism are additionally provided, length limitation of supporting arms is considered, and the design target that materials for the supporting arms are saved to the maximum degree while the constraint conditions are met is provided, so that the design result of the spatial arrangement meets the engineering practice requirements, and the materials and the processing cost can be saved.

The invention provides elastic knitted fabric, and solves problems in existing elastic knitted fabric that spandex is easily aged after multiple times of stretching because the spandex is added, so that fabric elasticity is greatly lost, and a plush structure can be obtained only through napping raising treatment, fabric processing procedures and processing cost are increased. A fabric rough blankof the fabric is formed by interweaving a high F-number yarn and an elastic shrinking yarn, or formed by co-interweaving the high F-number yarn, a common yarn and the elastic shrinking yarn. The highF-number yarn is a yarn of which a D/F range is within 0.5-1.6. The elastic shrinking yarn is a PTT/PET blending filament or a PBT/PET blending filament. The fabric rough blank is shrunk on the surface of an inner layer after dyed so as to form naps. In addition, the invention further provides a preparation method for the fabric.

The invention discloses a double-section high-strength bolt anti-loosening connecting joint for a space grid structure and a construction and installation method thereof. The double-section high-strength bolt anti-loosening connecting joint comprises a joint body, a double-section high-strength bolt, an inner nut, an outer nut, an anti-loosening washer and a rod piece end connecting piece; a screwrod of the double-section high-strength bolt is divided into a large thread section and a small thread section; the inner nut and the outer nut are matched with the large thread section of the double-section high-strength bolt, and a bolt hole of the joint body is matched with the small thread section of the double-section high-strength bolt; and the anti-loosening washer is composed of two identical washers, and the two faces of each washer are sawtooth-shaped. According to the joint, the bolts are screwed into the joint body through the locking effect of the bolts when the double nuts abutagainst each other, construction and installation are convenient, and the construction quality is easily guaranteed; the combination of the nut and the anti-loosening washer can effectively resist loosening of the joint during vibration caused by wind or earthquakes and the like, and the joint is high in reliability; and when the joint body is a bolt ball, the bolt ball body does not need to be cut, thereby reducing the diameter of the bolt ball and saving steel consumption.

The invention discloses a laser cladding powder which is prepared from the components in percentage by mass: 20.0 to 30.0 percent of WC reinforced particles, 9.0 to 13.0 percent of Cr, 7 to 9 percent of Fe, 1.0 to 2.0 percent of Si, 0.5 to 0.7 percent of C, 1.0 to 2.0 percent of B, and the balance Ni, wherein the sum of the mass percent of the components is 100 percent. The method for repairing the combination valve by adopting the laser cladding powder and an ultra-high-speed laser cladding technology is concretely implemented according to the following steps of (1) preparing the cladding powder; and vacuum sealing for standby use; (2) carrying out preprocessing on the surface of an ineffective oilfield water injection combination valve; and (3) determining a laser cladding technique and technological parameters according to the geometric dimension of the surface of the ineffective oilfield water injection combination valve.

The invention relates to an anchoring device for a taper sleeve-locking reinforcements and an anchoring method thereof, and belongs to the technical field of reinforced concrete anchoring. The anchoring device comprises a plurality of clamping sheets and taper sleeve anchoring plates at the outer sides of the clamping sheets, wherein each clamping sheet is provided with a tooth-shaped inner surface and a single-conical-surface outer surface, and reinforcements to be anchored are wrapped and clamped through the tooth-shaped inner surfaces; each taper sleeve anchoring plate is in a head-shoulder integrated shape and provided with a conical hole at the centre, and the clamping sheets and the reinforcements to be anchored sequentially sleeve the inner centres of the conical holes and locked simultaneously through the taper sleeve anchoring plates; the tooth-shaped inner surface of each clamping sheet is provided with a plurality of spaced trapezoidal teeth, and threads for anchoring are not needed at the end parts of the reinforcements to be anchored. The anchoring device disclosed by the invention omits the prefabrication link of reinforcement thread machining, saves the machining structure and the machining cost of the prefabrication link, and is fast, convenient and reliable to install, and easy for control quality.

The invention relates to a plant growth lysimeter capable of bidirectionally controlling the temperature of undisturbed soil. A protective barrel, a container barrel, a leakage water metering sensor,a weighing sensor, a soil temperature sensor, a bidirectional temperature control exchange pipeline, a refrigeration ventilation network pipe and a heating ventilation network pipe are used for detecting an evaporation change signal voltage value by a multi-path data acquisition and storage system, determining the evaporation of plant moisture and the transpiration of plants in the container by asoil leakage acquisition instrument, and dividing the signal value by a voltage-force value sensitivity coefficient of a sensor to obtain the weight of the container. The total weight of the containeris weighed, and the weight difference at different moments is the moisture evapotranspiration amount in the period of time. The device is simple in structure and convenient to use, and can be widelyapplied to research on forestry, ecology, reservoirs, industrial and mining engineering observation and the like.

The invention provides a machine tool spindle trial run platform capable of simulating working conditions. A front spindle fixing support and a rear spindle fixing support are arranged on a working table and used for supporting the front portion and the rear portion of a spindle to be tested correspondingly. A displacement information acquisition mechanism used for acquiring displacement information of a check rod and an angle/speed measurement information acquisition mechanism used for acquiring rotation information of a spindle holder are arranged on the working table and correspond to the check rod at the front end of the spindle to be tested and the spindle holder. The front end and the rear end of the spindle to be tested are both provided with acceleration sensors and temperature sensors, and the acceleration sensors and the temperature sensors are used for acquiring vibration information and temperature information of the spindle to be tested in the running process. A driving motor used for driving the spindle to be tested to rotate, a motor position adjustment mechanism used for adjusting the horizontal position of the driving motor and a force sensor module used for acquiring the magnitude of tensile force of the driving motor during movement are arranged below the working table. A motor sheave of the driving motor is connected with a spindle sheave at the rear end ofthe spindle to be tested through a transmission belt. The machine tool spindle trial run platform capable of simulating the working conditions is a machine tool spindle dynamic performance test platform capable of realizing omni-directional system integration.

The invention relates to workpiece painting processing equipment which comprises a control mechanism and an execution mechanism, wherein the control mechanism is positioned above the execution mechanism and comprises a cross beam, two fixed pulleys, a fan, a rotation motor, a chain, a vent hood and a vent hose; the two fixed pulleys and the rotation motor are fixed on the cross beam; the rotationmotor is arranged between the two fixed pulleys; the chain is wound on the two fixed pulleys; a chain wheel meshed with the chain is fixed on a rotation shaft of the rotation motor; the rotation shaftof the rotation motor is coaxially connected with the fan; the vent hood is arranged outside the two fixed pulleys and the rotation motor; two ends of the vent hood are connected with the vent hose respectively; a free end of the vent hose is level with the chain; a working mechanism comprises two working grooves and a balance hose; the two working grooves are fixedly connected with two ends of the chain respectively and are communicated through the balance hose. By adopting the technical scheme of the invention, the two working grooves can work circularly while a workpiece can be dried. Therefore, the workpiece painting processing equipment provided by the invention can be widely applied to the processing technologies for workpiece painting.

The continuously casting process of thin magnesium alloy strip plate includes the following steps: preheating and smelting alloy blank in melting furnace with flux; preheating the side sealing system to 400-450 deg c before casting, transferring the melt at 650-680 deg c to pouring basket and maintaining for 15-30 min under the action of flux, feeding via melt distributor to equal diameter double roller vertical continuous casting machine under the action of protective gas, casting in immersion mode and casting speed of 20-100m/min for casting-rolling, and feeding the strip plate from the casting rollers to the pinch rollers under protecting gas action. The cast thin magnesium alloy strip plate has thickness of 1.0-3.5mm. The present invention produces thin magnesium alloy strip plate directly with molten magnesium alloy, and has the advantages of high product quality, homogeneous inner structure, being favorable to subsequent processing, short technological process and low cost.

The invention relates to a method of using carbonated water for preserving raw milk. The method is performed in a system and includes the specific steps of (1) carbonation of water by mixing CO2 gas subjected to purification treatment with water subjected to sterile cooling, so that carbonated water saturated solution is obtained; (2) raw milk pretreatment by means of raw milk degasification, centrifugal raw milk purification and pre-pasteurization; and (3) spraying of the carbonated water to raw milk by spraying the carbonated water in the step (1) into the raw milk in the step (2), and uniformly mixing so that the raw milk prepared by the carbonated water preserving method is obtained. By the method of using the carbonated water for preserving the raw milk, the used carbonated water which is liquid is extremely easily mixed with the raw milk and can be well and uniformly mixed with the raw milk, and the addition quantity of the carbonated water can be flexibly adjusted according to different processing products, so that waste caused by escape of the CO2 gas can be avoided. The method is simple and easy to operate, preserving and processing costs are saved, and production efficiency of enterprises is improved. Additionally, the method is not high in requirements on cooling pressurization and spraying equipment and suitable for popularization of large-scale production of the enterprises.

The invention provides an automobile front axle assembly, and relates to automobile accessories. The automobile front axle assembly comprises a front axle, a brake assembly and a hub assembly which are respectively arranged at two ends of the front axle, wherein the hub assembly comprises a hub body, an outer bearing and an inner bearing which are arranged in the hub body; a brake boss is arranged on the hub body instead of a brake disc; friction plates are connected with left and right end faces of the brake boss, and thermal baffles are arranged between the friction plates and the brake boss; the outer bearing and the inner bearing are connected into a whole to form an integral unit bearing; and one or a plurality of through holes are formed in the front axle to realize light weight. According to the automobile front axle assembly, the brake disc is canceled in the hub assembly, and the friction plates and thermal baffles which are connected together with the hub body are adopted to replace the brake disc, so that the aims of production cost conservation, facilitated after-sale replacement and low maintenance cost can be achieved; and the whole axle has the characteristics of light weight, long service life, front axle bearing capacity guarantee, and is easy for popularization and application.

The invention discloses a preparation and trimming method of a laser near-net forming structured diamond excircle grinding wheel. The preparation and trimming method comprises the following steps thatdiamond and metal bonding agent powder are mixed in a material mixing bottle according to a certain mass fraction ratio, are subjected to ball grinding, are screened by a screening mesh, and are putinto a drying box for drying; a segment with a bright and clean to-be-machined metal matrix is obtained; diamond grinding material mixed powder obtained after drying is added into a powder feeding device; the segment with the bright and clean to-be-machined metal matrix is subjected to laser near-neat forming machining of a diamond grinding tool according to certain laser technology parameters andscanning paths, and the obtained segment is reinstalled in the excircle grinding wheel; the excircle grinding wheel is subjected to sharpening treatment; and the excircle grinding wheel after the sharpening treatment is trimmed by combination of a steel block and an oilstone. The machining time is saved, the machining cost is reduced, a required grinding wheel structure can be flexibly machined out, relative distribution positions of diamond grinding particles are effectively controlled, the flowability of cutting scraps is improved, cutting force is reduced, and the cutting temperature is lowered.

The invention discloses a network filter. The network filter comprises a shell, PINs and induction coils, a grooves is formed in the shell, the induction coils are arranged in the groove, multiple wire clamping grooves communicated with the groove are formed in the parts, at the two sides of the groove, of the shell, and coil lead wires of the induction coils are arranged in the wire clamping grooves. Multiple installation through holes are formed in the edge of each wire clamping groove, and the PINs are fixedly connected in the installation through holes. The ends of the coil lead wires are pressed tightly and fixed through the PINs and the inner walls of the wire clamping grooves, and the PINs and the coil lead wires are connected by way of soldering. A wire cutting step used for cutting away unnecessary coil lead wires is arranged at the edge of the shell. According to the network filter, the connection mode that the ends of the coil lead wires are pressed tightly and fixed through the PINs and the inner walls of the wire clamping grooves is adopted, the conventional wire winding connection mode is substituted, the process becomes simple, manpower and processing cost are saved, problems that originally, tweezers are used, so that surface paint on coil lead wires is prone to being damaged, and the coil lead wires are prone to being broken due to clamping are avoided, the electrical performance is improved, and the product qualified rate is raised.

The invention relates to an automatic stirring non-clogging sludge pump, and solves the problem that a water inlet is easy to clog in the prior art. According to the technical scheme, a hub of an impeller is conical, the small end of the hub passes through the water inlet, an extension section is arranged outside a shell, blades of the impeller are spiral centrifugal blades, the blades spirally wind and extend from one end of the hub to the other end of the hub, and each blade is provided with the extension section outside the shell. The automatic stirring non-clogging sludge pump has the effects that the special structure of the impeller (the impeller has functions of the impeller of the sludge pump, and the extension sections of the impeller extending from the water inlet have a functionof stirring sludge and silt) can form the extension sections outside the water inlet of a pump body, and the extension sections have effects of a stirring impeller, so that the purpose of stirring the sludge and the silt is achieved, and the sludge and the silt are prevented from clogging the water inlet; and the spiral centrifugal blades are adopted, so that the sludge and silt stirring effect can be improved, and the working efficiency of the sludge pump is improved.

The invention discloses an environment-friendly transformer with a housing for potting epoxy resin employing a lost-wax process and a method for preparing the environment-friendly transformer; and the environment-friendly transformer is simple in structure, good in sealing effect and high in insulating protection capability and does not pollute the environment. The environment-friendly transformer comprises a transformer body, wherein the transformer body comprises a skeleton (1), a finished coil wound on the skeleton (1) and a silicon steel sheet (2) sleeving the skeleton (1); a plurality of connection pins (3) are arranged on the upper end surface of the skeleton (1); an integrally molded epoxy resin layer (4) coats the periphery of the overall transformer body; and the connection pins (3) are exposed on the epoxy resin layer (4) at the upper part of the skeleton (1). The preparation method comprises the following steps of (a) prefabricating a wax mold; (b) potting the epoxy resin; (c) putting the wax mold into the transformer body; and (d) removing wax and forming the transformer a demolding manner. The environment-friendly transformer can be used for the field of electronic devices.