222results about How to "Will not be polluted" patented technology

The invention relates to a method of making a receiving channel (11) of a sensor, in particular a temperature sensor, in a cooking vessel (1) having a cap (2) comprising a bottom (3) and a perforated plate (6) fixed to the bottom (3), said receiving channel (11) being arranged between the bottom (3) and the perforated plate (6). According to the invention, it comprises the following steps: a) Preparing a groove (5) in the bottom (3) of the cap (2) or in the perforated plate (6), b) placing a strip (10) in the groove (5), c) positioning the perforated plate (6) on the bottom (3) and the crimp on the bottom (3) by striking the web (10) maintaining the geometry of the receiving channel (11) formed between the bottom (3) and the perforated plate (6) during the stamping operation, d) Remove the bar (10) to identify and train the receiving channel (11).

The invention relates to a precise thermal control mechanism of a focal plane detector, and the precise thermal control mechanism comprises a vacuum box body, a refrigerating assembly, a cold screen assembly, a heating assembly and a temperature collecting unit, and the precise thermal control mechanism also comprises a heat insulating layer which is arranged at the outer side of the vacuum box body and the outer side of the heating assembly, the refrigerating assembly comprises a refrigerator substrate, at least one detector refrigerator, at least one cold screen refrigerator, a heat tube assembly and a heat radiation plate. Due to the adoption of the precise thermal control mechanism, the technical problems that the quick variation of the temperature under the same working mode is difficult to realize because the temperature control of the traditional photoelectric detector thermal control mechanism mainly depends on the passive heat radiation way can be solved, a way combining the initiative refrigeration and the initiative heating is adopted, by the reasonable design of a thermal control system structure, not only is the quick variation of the temperature of the detector realized to meet the temperature requirement under different working modes, but also the temperature range can be precisely controlled, and the working reliability of the system is high.

The invention involves a rubber product surface vulcanizing pattern method, it includes the following steps: i) selecting the patterns needed vulcanizing on the rubber product, and formulating the printing oil containing rubber materials and sulfur; ii) printing the said patterns in step i) on the high temperature resistant paper film through printer, then getting pattern paper film; iii)injecting the rubber raw materials into the blank die of rubber product, preparing embryonic rubber product; iv) sticking said pattern paper film in step ii) on the needed position in embryonic rubber product; v) putting the embryonic rubber product with said pattern paper film prepared in step iv) in the product shaping die, heating and vulcanizing treatment; vi) taking the embryonic rubber product said in step v) out from shaping die, removing paper film and getting the rubber product which surface has patterns. The invention enables pattern stable, product external appearance good, die cost low, die is difficult to be polluted, it is suitable for various rubber surface patterns vulcanization.

The invention discloses a silicon-based heterojunction solar cell which comprises grid electrodes, a transparent conductive film, a boron-doped amorphous silicon, an intrinsic amorphous silicon, an N-type monocrystalline and a back electrode in sequence, wherein the back electrode is formed by a distributed Bragg reflector and an aluminum thin film, the distributed Bragg reflector is formed by arranging niobium-doped titanium dioxide thin films and aluminum-doped zinc oxide thin films at intervals, and the aluminum thin film is arranged on the surface layer of the aluminum-doped zinc oxide thin film on the outermost layer of the distributed Bragg reflector. The distributed Bragg reflector used as the back electrode consists of two transparent conductive films with different refraction indexes, so that the resistance of the cell device connected in series is reduced, the collection of current carriers is facilitated, and the photoelectric conversion efficiency of the cell is high; and by adopting the back-reflecting electrode formed by combining the distributed Bragg reflector and the aluminum anode, the long wave band of the near infrared part with characteristic wavelength can be reflected to the inside of the crystalline silicon wafer to be reabsorbed through the two layers of conductive films with different refractive indexes, so that both the current and the photoelectric conversion efficiency of the cell are improved.

The invention relates to an efficient preparation method for a planar miniature supercapacitor electrode with an interdigital structure, which comprises the steps of (1) obtaining a film based on a two-dimensional nanomaterial on a substrate; (2) directly scraping a part required to be removed on the film according to a pre-designed pattern by using a scraping tool with a pointed end to obtain a planar miniature supercapacitor electrode with an interdigital structure, wherein the size of the pointed end of the scraping tool is not greater than the size of a narrowest part of the part requiredto be removed. The preparation method has the advantages of simplicity, high efficiency, high universality, low cost and environmental friendliness.

The invention relates to a cultivation method for edible fungus, in particular to a cultivation method for organic coprinus comatus and a culture medium of the organic coprinus comatus produced by using pure natural raw materials. The cultivation method has the advantages of safety, no pollution, high yield and high-efficiency mushroom production. The culture medium of the organic coprinus comatus comprises major ingredients, auxiliary ingredients, additives and covering soil, wherein the major ingredients, the auxiliary ingredients and the additives are uniformly mixed and then fermented before production; the covering soil is used in a production process; the culture medium is characterized in that the major ingredients comprise cob and cow dung; the auxiliary materials comprise wheat bran, corn flour and meal cake; the additives comprise calcium superphosphate and a biological leavening agent; and the covering soil comprises coarse soil with diameter of 2-3 cm, medium soil with diameter of 1-2 cm and fine soil with diameter of 0.1-1 cm. The cultivation method for the organic coprinus comatus comprises the following five steps of: preparing a bed; inoculating; growing spawn; covering soil; and harvesting; and the cultivation method is characterized in that the culture medium in preparation of the bed is any culture medium.

The invention discloses a multifunctional combine pneumatic valve applied on aseptic filling machine, which comprises a valve body. The valve body is composed of a first cavity, and a second cavity, a third cavity and a fourth cavity which are respectively connected with the first cavity, and a fifth cavity connected with the fourth cavity, the other end of the second cavity is connected with a first pneumatic execution member through a second coupler, the other end of the third cavity is connected with a second pneumatic execution member through a third coupler, and the other end of the fifth cavity is connected with a third pneumatic execution member through a fourth coupler. The multifunctional combine pneumatic valve applied on aseptic filling machine has simple structure, and can realize the functions of filling, heat sterilization and the like. When a plurality of aseptic filling machines are used, the filling pipelines of the filling machines are relatively isolated, so the material can not be polluted.

The invention discloses a multi-sample immunity-detecting reaction disc capable of automatically separating serum. In use of the multi-sample immunity-detecting reaction disc, blood is added into the reaction disc, then the reaction disc is put into a special detection instrument, and the special detection instrument drives the reaction disc to carry out centrifugal movement; under the action of centrifugal force, serum is automatically separated, the serum and a diluent in a dilution cup enter reaction chambers distributed at the periphery of the reaction disc, and a dry reagent sealed up in the reaction chambers in advance reacts with the serum and the diluent; and eventually, report results of each item in corresponding reaction chambers are obtained through the detection instrument. The multi-sample immunity-detecting reaction disc can automatically carry out serum separation and detection of indexes of immunity items, so labor force is greatly reduced, samples are prevented from contamination, and errors caused by improper operation are decreased accordingly; and the multi-sample immunity-detecting reaction disc can carry out reaction detection on a plurality of samples at the same time, so the function of batch detection is realized, and efficiency is improved compared with single-sample detection.

The present invention discloses a magnetic drive high speed turbocharger, consisting of a turbo shell, a turbo rotor, a diffusing groove, a shell, an air inlet, an air outlet, a high-speed motor and a magnetic coupler. The coupler is composed of an external rotor assembly and an internal rotor assembly; the two assemblies are divided by an isolation cover which is fixed on the shell forming a sealed chamber with the shell. Besides, the external rotor assembly is connected with the high-speed motor and the internal rotor assembly is connected with the turbo rotor. The invention adopts the magnetic coupler drive, the whole pressure-improving component is arranged in a sealed shell, which eliminates sealing problems caused by dynamic sealing with no need of lubrication and cooling. The compressor is suitable for the high purity gas which has strict requirements for sealing, flammable and explosible, poisonous and baneful.

The invention discloses a pressure stabilizing type non-negative pressure water supply system which comprises a water inlet pipe, a water inlet pipe pressure stabilizing device, a water supply power combination device and a water supply pipe. The water inlet pipe pressure stabilizing device is integrally arranged on the water inlet pipe communicated with a municipal tap water pipe, and the water inlet pipe is supplied to all users after being treated and pressurized by the water supply power combination device; the water inlet pipe pressure stabilizing equipment comprises a high-level water tank, a hydraulic cylinder and a pressurizing barrel, the high-level water tank is communicated with the water inlet pipe through an L-shaped pipe, a water replenishing valve is arranged on the L-shapedpipe, the bottom of the high-level water tank is communicated with the pressurizing barrel through a folding pipe, a first electromagnetic control valve and a third check valve are arranged on the folding pipe, and a liquid level sensor is arranged in the high-level water tank; and an output shaft of the hydraulic cylinder is fixedly connected with a piston in the pressurizing barrel, the bottomend of the pressurizing barrel is communicated with the water inlet pipe through a pressurizing pipe, and a second electromagnetic control valve and a fourth check valve are arranged on the pressurizing pipe.

The invention discloses an engine oil seal lip grease charging device. The bottom part of an upright column is fixed on a bottom seat, a supporting beam is equipped at the upper part of the upright column, and an oil cylinder is fixed at the beam end of the supporting beam; the axle center lines of the oil cylinder and the upright column are parallel, a push rod is arranged in the inner cavity of the oil cylinder, the upper end of the push rod is stretched out the upper end opening of the oil cylinder, a piston is equipped at the lower end of the push rod, and the piston can longitudinally slide in the inner cavity of the oil cylinder; a positioning sleeve is fixed at the bottom end of the oil cylinder, the positioning sleeve with an open mouthed upper end and a sealed lower end is in a cylindrical structure, the inner cavity of the positioning sleeve is communicated with the inner cavity of the oil cylinder, a guiding hole is arranged on the peripheric surface at the lower end of the positioning sleeve, and the guiding hole is communicated with the inner cavity of the positioning sleeve. The invention has good security, and is easy to operate, the grease charging speed is high, the labor intensity of the workers is low, and the operating efficiency is high; the invention can uniformly coat the grease on the oil seal lip, the phenomenon that the grease overflows can not occur, and the erroneous indication of grease leaking is effectively eliminated.

The invention discloses a manufacturing technology of an LED bracket with good air-tightness. The manufacturing technology comprises the following steps of: (1) stamping, namely stamping and molding a metal bracket by a press machine and a mold in fit; (2) checking; (3) injection molding; (4) checking; (5) electroplating; (6) checking; (7) bending and cutting; (8) checking; (9) packaging; and (10) checking. The LED bracket is manufactured in a manner of electroplating after injection molding; and the metal bracket is coarse in surface after being stamped and molded and can be firmly combined with an insulator, so that the air-tightness of a product is ensured. Meanwhile, electroplating treatment is carried out after injection molding; and an electroplating material can carry out further sealing treatment on the combined edge of the insulator and the metal bracket, so that the air-tightness of the product is further improved. Furthermore, a clad layer is not polluted by an injection molding material, so that the usability of the product is effectively improved.

The invention discloses anti-corrosion secondary water supply non-negative pressure equipment. One end of a water conveying pipe is connected with a treatment tank; a granular activated carbon filterscreen is fixedly mounted at the top of a treatment tank; an annular fixing frame is fixedly connected to a position, which is located below the granular activated carbon filter screen, in the treatment tank; an annular fixing groove is formed in the bottom end of the annular fixing frame; an ion exchange resin filter element is mounted in the middle of the treatment tank; and the top end of the ion exchange resin filter element is fixedly connected with an upper mounting block. The structure is scientific and reasonable, the equipment is safe and convenient to use, by using the ion exchange resin filter element, free anions and cations in the water are removed, the pH value of water is reduced, corrosion of water to the equipment is reduced, water in the equipment will not be polluted bythe rusts, chlorides in the water can be absorbed by using the granular activated carbon filter screen, and the probability that the equipment is corroded is further reduced.

The invention discloses an environment-friendly ozone degerming cabinet in the field of environmental protection technology. Vertical rods are installed at the four corners of the top of the support plate. The top of the inner cavity is provided with a gas diversion plate, the top of the gas diversion plate is connected to the gas outlet of the ozone generator through a hose, the left outer wall of the cabinet is equipped with a waste gas treatment box, and the bottom of the waste gas treatment box is passed through The pipeline is connected with an air pump, and the air inlet of the air pump is communicated with the exhaust gas communication pipe through the pipeline. The top of the inner wall of the cabinet is equipped with an ozone sensor. The device has a compact structure and is easy to operate. The use of ozone disinfection and high temperature effectively improves sterilization The working efficiency is high, and the residual ozone exhaust gas in the disinfection cabinet is purified through the activated carbon plate and catalyst plate distributed in the exhaust gas treatment box, which ensures that the environment will not be polluted and also avoids the harm caused by excessive ozone to the human body. harm.

The invention discloses a tea drying machine which comprises a drying box, drying chambers arranged in the drying box, and a heating device connected with the drying boxes, wherein a vertical hot air channel is arranged on the right side of the drying box, and a vertical air discharging channel is arranged on the left side of the drying box; a plurality of drying chambers are vertically distributed in the drying box; inlets communicated with the hot air channel are formed in the right sides of the drying chambers; outlets communicated with the air discharging channel are formed in the lower ends of the drying chambers; the heating device comprises a boiler and a heat exchanger; the heat exchanger is connected with the boiler through a high-temperature liquid conveying pipe and a low-temperature liquid backflow pipe; the heat exchanger comprises a heat dissipation pipe and a fan; the heat exchanger is connected with the hot air channel. Therefore, tea can be fully and uniformly dried, and cannot be polluted.

The invention discloses a disinfection machine for ozone sterilization. The disinfection machine comprises a machine body; the outer surface of the machine body is provided with an air duct filter screen; operation keys and a display screen are arranged above the outer surface of the machine body respectively; the top of the machine body is provided with a moving handle; the bottom of the machinebody is provided with supporting legs; the bottom end of each supporting leg is provided with a universal wheel; the lower side of the back part of the machine body is provided with a water tank, a water addition hole and a drainage pipe; the outer surface of the drainage pipe is provided with a drainage valve; and the interior of the machine body is provided with a disinfection chamber. For the disinfection machine for ozone sterilization, by also arranging the water tank inside, ozone can be dissolved in the water tank firstly when being discharged as being easily dissolved into water, the surrounding environment cannot be polluted, and the problem that a man and the machine cannot coexist and work at the same time is solved.

The invention discloses a small in-bore environment-sensitive mechanism. According to the invention, under falling overload, movement generated by stress of a firing pin seat 3 in a falling process isisolated through constraint of an inertia block 2 on the firing pin seat 3 when the inertia block 2 moves downwards in the falling process, and the situation that the firing pin seat 3 and a firing pin 4 on the firing pin seat 3 move downwards under the falling overload to detonate a needle-punched detonator 6 is prevented. Under a long-time low-overload launching condition, the inertia block 2 moves downwards to the end and then relieves constraint on a steel ball 8, the firing pin seat 3 continues to bear a downward overload force, the steel ball 8 embedded into a groove 31 of the firing pin seat 3 is extruded into an empty cavity in a step 21 of a heavy block 2, and therefore constraint on the firing pin seat 3 is relieved, and the firing pin seat 3 continues to bear the downward overload and impacts and detonates a needle-punched cap 6. The radial size of the mechanism is reduced through the semi-cylindrical design of the inertia block and the firing pin seat which are restrainedin sequence, and the axial size is reduced through parallel installation for the inertia block and the firing pin seat and staggered layout for the firing pin and a spring. Meanwhile, the mechanism isof a sealed structure and cannot be polluted by dust in a thermal battery.

The invention discloses an air supply pipeline for inspiration. An opening in the internal hole direction of the air supply pipeline is formed in a pipe wall of the air supply pipeline; the pipe wallis made of rigid materials; the parts, on the two sides of the opening, of the pipe wall are separated by a distance; the part, on one side of the opening, of the pipe wall is fixedly connected with asealing strip; and the other side of the sealing strip is movably connected with the part, on the other side of the opening, of the pipe wall.

The invention relates to a method and a machine tool (1) for machining and hardening metallic workpieces (2). The workpiece (2), clamped in workpiece holders (4 to 6), is first machined by means of a machining device (7, 8) and subsequently hardened by means of a hardening device (9). The machined workpiece (2) is, for hardening purposes, first heated by means of a heating unit (62) and subsequently quenched by means of a quenching unit (63). The quenching takes place using a cryogenic coolant, such as, for example, liquid or gaseous nitrogen. High machining quality and low machining and cycle times are achieved by machining and hardening the workpiece (2) in a clamp and rapidly quenching the heated workpiece (2).

The invention discloses a large-discharge-interval normal temperature glow discharge low-temperature plasma material processing device. The large-discharge-interval normal temperature glow discharge low-temperature plasma material processing device comprises a vacuum cavity, an upper electrode, a lower electrode, an outer air adding connector, an air exhaust and leakage connector and a vacuum cavity door, and further comprises a driving power source, wherein the upper electrode and the lower electrode are arranged inside the vacuum cavity, the outer air adding connector is arranged at the upper end of the vacuum cavity, the air exhaust and leakage connector is arranged at the lower end of the vacuum cavity, the vacuum cavity door is arranged on one side of the vacuum cavity, the driving power source penetrates through the vacuum cavity and are connected with the upper and lower electrodes, and the driving power source is a modulation pulse driving power source. Meanwhile, the lower surface of the upper electrode and the upper surface, opposite to the lower surface of the upper electrode, of the lower electrode are each provided with a rare earth element oxide coating. In order to solve the problem that a large amount of heat energy is generated during discharging of an existing low-temperature plasma material processing device, the normal temperature glow discharge low-temperature plasma material processing device is provided for generating uniform glow discharge and being close to the normal temperature on the condition of air pressure being 500-5000 pa.

The invention is a light-emitting diode (LED) for improving light pickup efficiency, comprising: thickened P electrode, high reflecting metallic mirror, P electrode Ohm contact layer, P-type semiconductor, multi-quantum trap active region, thickened N electrode, N electrode Ohm contact layer, N-type semiconductor, and substrate, where the P-type semiconductor, multi-quantum trap active region, N-type semiconductor compose a table of the LED from the top down, and the substrate is a light outgoing side; and it is characterized by alternatively growing high and low refractivity materials on the LED side wall to form a high reflecting multilayer dielectric film. And the preparing method of the LED is characterized by preparing the high reflecting multilayer dielectric film after preparing the high reflecting metallic mirror. And the invention makes one-time growth of the high reflecting multilayer dielectric film while passivating the side wall. And the process is simple and the light output is improved at least by 20%.

The invention discloses a movable sterile cage replacement work station. The work station comprises an air conditioning device, an air pressure regulating device and an operation space provided with a door. A support is arranged in the operation space, a connection device is arranged on the outer side face of the operation space, and a soft curtain door is arranged on the side, not provided with the door, of the operation space. The movable sterile cage change work station and an IVC cage frame form a sealed combination, the outside pressure of the work station is in a positive pressure state, the inside of the work station is in a high-cleanliness sterile state by means of a storage power source and an adjustable air pressure controller, and when a cage is replaced, experiment animals in a cage box cannot be contaminated by other surrounding experiment animals or air.

The invention relates to a high-temperature disinfection dish washing machine. The dish washing machine comprises a dish washing cavity, a cover plate, a rotary dish rack, a spraying arm assembly, a water path system, a steam generation device and a high-pressure hot air assembly. The rotary dish rack and the spraying arm assembly are mounted in the dish washing cavity; the rotary dish rack is used for fixedly placing dishes and tableware; the water path system is used for supplying water to the spraying arm assembly and collecting sewage after dish washing; the spraying arm assembly sprays clean water to clean tableware and drives the rotary dish rack to rotate at the same time; steam generated by the steam generation device is conveyed into the dish washing cavity; steam can kill virusesand bacteria to ensure tableware to be clean; meanwhile, the steam also heats the liquid cleaning water to clean tableware; the high-pressure hot air assembly generates high-pressure hot air to dry tableware, the high-pressure hot air drives the dish rack to rotate at the same time, the purpose of enhancing the dish washing and cleaning effect is achieved, the water path system is reasonable in structural design, clear water and sewage are not mixed, secondary pollution is avoided, no sewage is left, a pump and a cavity are kept ventilated, and bacteria are prevented from infecting tableware.

A PDP panel turnover car comprises a portal square steel mount (2), which is characterized in that two straight sides of the portal square steel mount (2) are symmetrically equipped with guide rails (1) on which slide blocks (4) are mounted on, the slide blocks (4) are connected with lead screw nuts (5) which are mounted on lead screws (3), the lead screws (3) are mounted inside the square steel mount (2), and the slide blocks (4) mounted on the guide rails (1) are connected with a mounting plate of panel bracket (14), on which multi-layered panel brackets (13) are symmetrically inserted. The outer sides of the panel brackets (13) are respectively equipped with a group of manipulators (10) of a grab panel (11), one ends of the manipulators are respectively hinged with two parallel drive rods, the other ends of the manipulators are respectively hinged on a base of the turnover car for one end and connected with the input shaft of a meshed gear set (8) for the other one end, and the meshed gear set (8) is connected with a driving motor (9). The PDP panel turnover car has the advantage of simple structure, can increase efficiency of panel turnover, and prevents pollution and damage in the process of panel turnover.

The present invention is one electrolytic process of reducing Yb, enriching Tu and Lu, and oxidizing Ce simultaneously. The electrolytic process reduces Yb into bivalent Yb ion in the cathode chamber so as to separate out Yb from the enriched Yb, Tu and Lu; oxidizes Ce into four-valent ion so as to separate out Ce. The electrolytic equipment has cathode of metal mercury or amalgam, anode of inert metal, anion exchange membrane to separate the anode chamber from the cathode chamber, cathode solution of sulfuric acid solution of pH 0.1-4.0 with enriched Yb, Tu and Lu, and anode solution of sulfuric acid solution of acidity 0.01-3.0 mol / L with enriched Ce. The present invention has low production cost, best utilization of electrolytic current and other advantages.

The invention provides a soil-squeezing hole expanding pile and a construction method and drilling tool thereof. The soil-squeezing hole expanding pile comprises a soil-squeezing part and a hole expanding part located at the bottom of the soil-squeezing part. The soil-squeezing part comprises a pile foundation and a concrete pile body arranged in the pile foundation in a filled mode. The pile foundation comprises a soil-squeezing layer located at the inner periphery of the pile foundation, and an inner thread formed in the inner wall of the soil-squeezing layer. The concrete pile body comprises an outer thread formed in the outer wall of the concrete pile body. The inner thread is in screw confection with the outer thread. A blocking ring structure of the soil-squeezing hole expanding pile conducts secondary squeezing on the hole wall of the squeezing-expanding-formed pile, soil is prevented from being screwed out in the pile forming process, and thus the pile is formed directly through squeezing and expanding. In addition, an expanding head is of a double-layer structure with an inner barrel and an outer barrel, and an expanding tooth is arranged on the inner barrel. Besides, through rotation of the expanding head, out stretching and retracting of the expanding tooth are controlled, and expanding of different soil textures is completed.

The invention discloses an air conditioning type range hood. The air conditioning type range hood comprises an air conditioning assembly and a lampblack suction assembly, wherein the air conditioningassembly comprises a compressor, a first heat exchanger and a second heat exchanger; the lampblack suction assembly comprises a fan frame and a lampblack inlet cavity formed below the fan frame, and the lampblack inlet cavity is in fluid communication with an air inlet of a fan; the air conditioning assembly further comprises a first cover shell, a second cover shell and an air outlet device, thefirst heat exchanger is arranged in the first cover shell, the second heat exchanger is arranged in the second cover shell, and the first cover shell and the second cover shell are each provided withan independent air inlet channel; and an air outlet of the first cover shell is in fluid communication with an air inlet of the fan, an air outlet of the second cover shell is in fluid communication with an air inlet of the air outlet device, and an air outlet of the air outlet device is in fluid communication with a kitchen room. When the air conditioning type range hood works, the fan can take away heat of the first heat exchanger, and air subjected to heat exchange by the second heat exchanger can be conveyed into the kitchen room from the air outlet device; and the range hood is compact instructure, the heat exchanger cannot be polluted by lampblack, and the service life is long.

The invention discloses a displacement pile and a construction method and drilling tool thereof. The drilling tool comprises a linear cylinder structure, a concrete blocking ring, a spiral column structure and a drill bit. The cylinder structure, the concrete blocking ring and the spiral column structure are connected fixedly and sequentially to form the integrated drilling tool. The spiral column structure comprises a cylinder pipe core and a spiral blade clockwise arranged at the outer edge of the cylinder pipe core. The cylinder pipe core is connected with the drill bit through a drill bit connector arranged at the lower end of the cylinder pipe core. The height ratio of the concrete blocking ring to the spiral column structure is 7:25, and the edge of the outer wall of the concrete blocking ring is flush with the edge of the outer wall of the spiral blade. The drilling tool is novel in structure, the pile forming quality is good, bit bouncing is not liable to occur, and environmental protection is achieved. In addition, according to the construction method of the displacement pile, in the pile forming process, a concrete blocking ring structure blocks soil from being screwed out, and the pile is formed directly through extruding and expanding. The formed pile is high in bearing capacity, good in pile forming quality, and the work efficiency is further improved.