159results about How to "Timely export" patented technology

The invention relates to a natural gas hydrate, and particularly to an accelerant for strengthening the generation of a gas hydrate. The accelerant for generating the gas hydrate, provided by the invention, is prepared by compounding of a novel anion gemini surfactant and solid activated carbon particles with a strong heat transmission effect at a certain mass ratio; a liquid mixture is formed after the high-speed mechanical agitation and the ultrasonic dispersion are conducted on the reagent, and the essence is that solid particles with a high heat-conducting property are wrapped in the gemini surfactant, so that nanometer solid particles cannot be agglomerated easily, and the mixing solution with uniformly dispersed solutes is formed, and the mixing solution is free of sediment; the application temperature ranges from 0 DEG C to 10 DEG C, the pressure ranges from 0 MPa to 12 MPa, and the time of hydrate generation induction period ranges from 1 min to 3 min; compared with the pure water system, the generation speed rate of the hydrate is increased by 140%-200%.

The invention discloses an efficient heat radiation device for a lithium ion power battery. The device comprises a thermal-arrest panel which can tightly fit with the battery, a U-shaped heat pipe filled with a working fluid and a radiating fin group. A bent part in the middle of the U-shaped heat pipe is embedded in the thermal-arrest panel, and overhanging parts at two ends of the U-shaped heat pipe extend out of the thermal-arrest panel. The radiating fin group is tightly secured to the overhanging parts of the U-shaped heat pipe through holes. By the device, efficient heat radiation of the lithium ion battery can be realized, and temperature uniformity between single batteries of a battery pack is raised. Thus, usability of the battery pack is raised, the thermorunaway risk is reduced, and service life of the battery pack is prolonged. A phase-change heat-transfer element heat pipe with high heat transfer coefficient is adopted. The phase-change heat-transfer element heat pip has good heat storage and heat radiation properties and has high operation reliability. Meanwhile, the device provided by the invention has advantages of simple structure and low cost, and is energy-saving and environmentally friendly.

The invention relates to a high-temperature resistant single-component epoxy structure glue, a preparation method and a using method thereof. The epoxy structure glue is prepared by raw materials based on parts by weight: 100 parts of epoxy resin, 10-25 parts of toughening agent, 20-40 parts of filler, 1-5 parts of coupling agent, 5-10 parts of curing agent and 3-8 parts of thixotropic agent. The high-temperature resistant single-component epoxy structure glue has certain properties in the aspects of metal and nonmetal, thus not only having the adhesive bonding function, but also being used for filling gaps; and due to the low coefficient of thermal expansion, the cured product can be used for a long time at higher temperature and does not crack by internal stress.

The invention discloses a collecting electrode used for a traveling wave tube and a manufacture method thereof. The collecting electrode used for the traveling wave tube comprises an oxygen-free copper inner core (1), wherein a graphite loading head (2) in a conical structure is nested inside one end of the oxygen-free copper inner core (1) near an collecting electrode opening, the contact part of the oxygen-free copper inner core (1) and the graphite loading head (2) is filled with welding flux (3), in addition, the oxygen-free copper inner core (1) and the graphite loading head (2) are connected in a brazing way, and a ring (4) which is made of ultraperm and used for preventing the pull cracks of the graphite loading head (2) caused by heat expansion of the oxygen-free copper inner core (1) is sheathed on the outer ring of one end of the oxygen-free copper inner core (1) provided with the graphite loading head (2). The oxygen-free copper inner core and the graphite loading head of the collecting electrode used for the traveling wave tube with the structure are connected in the brazing way, so good heat conductive performance of the collecting electrode is ensured, in addition, the front end of the graphite loading head is processed into a conical shape, and the invention is more favorable for the electron absorption.

The invention discloses a concrete production system and a production method thereof. The concrete production system comprises a sand feeding device, a cement feeding device, a gravel feeding device,a sand-cement mixing device, a gravel screening spiral material guide groove, a sand-cement-gravel mixing device and a concrete mixer; the sand feeding device can supply raw material sand required byconcrete to the sand-cement mixing device, the cement feeding device can supply raw material cement required by the concrete to the sand-cement mixing device, and the sand-cement mixing device can mixthe supplied sand with the supplied cement; and the gravel feeding device can be used for screening raw material gravel required by the concrete through the gravel screening spiral material guide groove and then supplying the gravel to the sand-cement-gravel mixing device, the sand-cement-gravel mixing device can be used for mixing the mixed sand and cement with the gravel, and then the mixture is stirred by the concrete mixer to form the concrete. According to the concrete production system and the production method thereof, the mixing uniformity of all the raw materials required by the concrete is ensured, and the quality grade of the concrete is improved.

The invention discloses a rare earth alloy material crusher. The rare earth alloy material crusher is characterized in that two driven wheels are arranged on two sides of a driving wheel respectively, the driving wheel and the driven wheels are in transmission connection through a belt, and a left crushing rod and a right crushing rod are arranged in the two driven wheels respectively in a sleeving manner; one end of the left crushing rod penetrates through a left filter screen and a guiding plate in sequence to extend into the bottom of a left crushing box, left crushing blades are connected with the periphery of the left crushing rod, a discharge port is formed in one side of the left crushing box and located above one side of the guiding plate, and the left crushing box and a right crushing box are communicated through the discharge port; the bottom of the left crushing rod is sleeved with a first bevel gear which is meshed with a second bevel gear, and a rotating shaft is sleeved with the second bevel gear; a right filter screen is arranged in the right crushing box and located below a right stirring rod, right crushing blades are connected with the periphery of the right stirring rod, and spiral blades are connected with the periphery of the rotating shaft located in the right crushing box. The rare earth alloy material crusher is ingenious in design, and crushing efficiency and crushing effect are effectively improved.

The invention relates to an oil-immersed water-cooled high-power electric and electronic capacitor, which consists of a shell, a capacitor core set and a cover plate. A cooling device is arranged at a gap between the capacitor core set and the shell; a cover plate assembly is provided with a cooling water inlet interface and a cooling water outlet interface which are connected with an external cooling water pipe; and two ports of the external cooling device are respectively communicated with the water inlet interface and the water outlet interface on the cover plate assembly. When the capacitor works, heat produced by the capacitor is dissipated in the form of heat radiation and heat produced inside the capacitor is brought away when external cooling water flows through the capacitor through the interface on the cover plate assembly, so internal temperature rise of the capacitor can be reduced and a temperature upper limit in the working environment of the capacitor is provided. The invention has the advantages of enhancing overcurrent capability of the capacitor, prolonging the service life of the capacitor, reducing the volume of the capacitor and lowering the manufacturing cost of the capacitor.

The invention discloses a battery module, which comprises a soft package battery core structure and a housing, wherein the soft package battery core structure comprises a plurality of brackets and a plurality of battery cores arranged on the plurality of brackets; the plurality of brackets are arranged and distributed and corresponding first grooves are arranged in the edges of the plurality of brackets; the housing comprises a shell surrounded by four sides to form a space for accommodating the soft package battery core structure, a first end plate located at the front end of the housing anda second end plate located at the rear end of the housing; the inner side of the shell is provided with raised lines which extend towards two ends of the shell, and the raised lines are matched with the first grooves to limit the soft package battery core structure; the shell also comprises fins located at the outer side of the shell; a closed chamber is formed by the second end plate, the shell and the first end plate; and the raised lines on the inner wall of the shell are matched with the first grooves in the brackets in the soft package battery core structure. Through the cooling fins on the outer wall of the shell, the positions of the battery cores in the housing are stable and cooling of the plurality of battery cores can be accelerated.

The invention belongs to the technical field of nucleic acid amplification instruments, and particularly relates to a fan module of a digital nucleic acid amplification instrument. The fan module comprises a fan module frame, heat sinks and cooling fins, wherein the fan module further comprises a variable speed fan, a temperature sensor, a temperature controller and a fan speed controller. The variable speed fan, the temperature sensor, the temperature controller and the fan speed controller are electrically connected to each other. The variable speed fan speed and the chip temperature have aone-to-one correspondence relationship. The variable speed fan speed can be adjusted in real time according to the chip temperature, so that the heat dissipation is fast and the heat dissipation process is controlled. The PID algorithm can be combined to accurately control the temperature, and the temperature overshoot is not prone to occur.

The invention discloses a method and equipment for preparing high-purity chlorine dioxide at high conversion rate, accurately controlling chlorine dioxide adding amount, and greatly enhancing the reliability of system operation at the same time. The invention aims to solve the main technical problems that the conversion rate and the purity of the chlorine dioxide are improved, the chlorine dioxide adding is accurately and dynamically controlled, and the reliability and the safety of the system operation are enhanced. In the invention, sulphuric acid, sodium chlorate and a hydrogen peroxide solution are heated, and are subject to gas-liquid separation after being mixed through a Venturi mixer; the adding amount and the adding proportion of a prepared chlorine dioxide gas are accurately controlled by an intelligent environmental adaptation system for multipoint adding, so as to ensure the water quality reaches the standard. The chlorine dioxide preparing and adding equipment of the invention can carry out remote real-time centralized control and management, so that the reliability and the safety of the system operation are greatly enhanced. The invention has the advantages of high conversion rate of preparing the chlorine dioxide, high purity, low disinfection cost, as well as safe and reliable system operation, thereby facilitating centralized management and large-scale promotion.

The invention discloses an anticorrosive paint for building materials. The anticorrosive paint is prepared from the following raw materials in parts by weight: 40-50 parts of modified acrylic emulsion, 0.8-1 part of modified graphene, 9-13 parts of titanium dioxide, 8-10 parts of talcum powder, 1.2-1.6 parts of an antirust additive, 5-6 parts of an assistant and 20-30 parts of deionized water. Theinvention also discloses a preparation method of the anticorrosive paint. Modified acrylic emulsion is used as a film-forming substance of the paint, so that the paint not only has a good film-forming property and adhesive force, but also has excellent water resistance and aging resistance. By adding the antirust additive, an antirust effect can be achieved, and a corrosion inhibition function isachieved. Modified graphene is added to serve as an excellent shielding layer, so that the contact between building materials and a corrosive medium is prevented, and the corrosion resistance is enhanced. The paint is better combined with a matrix, and plays corresponding effects more easily. The aqueous anticorrosive paint has an excellent comprehensive performance and is suitable for protectingmetal building materials.

The invention provides an electrochemical power-supply composite membrane and a preparation method thereof. The electrochemical power-supply composite membrane comprises a non-woven fabrics membrane layer and an organic-inorganic composite layer combining with the surface of the non-woven fabrics membrane layer; the organic-inorganic composite layer comprises an organic binder, a hollow inorganic powder, inorganic nanometer fiber and an organic solvent formula component, wherein the organic binder accounts for 1%-50% by mass of the sum of the organic binder and the organic solvent; the hollow inorganic powder and the inorganic nanometer fiber respectively accounts for 0.5%-25% by mass of the sum of the organic binder the hollow inorganic powder, the inorganic nanometer fiber and the organic solvent; the sum of the hollow inorganic powder and the inorganic nanometer fiber accounts for 25.5%-50% by mass of the sum of the organic binder, the hollow inorganic powder, the inorganic nanometer fiber and the organic solvent. The composite membrane is high in membrane rupture temperature and strength, light in weight and high in safety. The preparation method of the composite membrane is simple in technology and high in production efficiency, and is suitable for industrial production.

The invention provides an electrochemical power-supply composite membrane and a preparation method thereof. The electrochemical power-supply composite membrane comprises a polyolefin membrane layer and an organic-inorganic composite layer combining with the surface of the polyolefin membrane layer; the organic-inorganic composite layer comprises an organic binder, a hollow inorganic powder, inorganic nanometer fiber and an organic solvent formula component, wherein the organic binder accounts for 1%-50% by mass of the sum of the organic binder and the organic solvent, and the hollow inorganic powder and the inorganic nanometer fiber respectively accounts for 0.5%-25% by mass of the sum of the organic binder, the hollow inorganic powder, the inorganic nanometer fiber and the organic solvent. The electrochemical power-supply composite membrane is effectively improved in membrane rupture temperature, heat dissipation performance and strength, and reduced in weight, and thus the safety performance and the cycle service life of an electrochemical power supply are prolonged, and the energy density of the electrochemical power supply is improved. The preparation method of the composite membrane is simple in technology and high in production efficiency, and is suitable for industrial production.

The invention discloses a bulk acoustic wave resonator with a heat dissipation structure and a manufacturing process. The bulk acoustic wave resonator comprises a substrate, a metal heat dissipation layer formed on the substrate and provided with an insulating layer on the surface, and a resonance function layer formed on the insulating layer. The metal heat dissipation layer and the insulating layer surround the substrate to form a cavity, and a bottom electrode layer in the resonance function layer covers the cavity. The metal heat dissipation layer and metal columns are arranged around thecavity, so that heat can be conducted out in time in the use process of the device, and the service life of the device is prolonged. According to the bulk acoustic wave resonator, the metal heat dissipation layer, the bottom electrode layer and a top electrode layer are prevented from forming capacitance as much as possible structurally, parasitic capacitance of the resonator is reduced, and performance of the resonator is effectively improved. Moreover, the device can also have an electromagnetic shielding structure, so that the device has good heat dissipation and anti-electromagnetic shielding effects in the use process on the premise of reducing parasitic capacitance of the resonator, and the device has good reliability while working normally and stably.

The invention relates to the technical field of charging piles, and discloses an environment-friendly new energy charging pile which comprises a fixed base, and a charging pile column is fixedly mounted at the top of the fixed base. The invention discloses an environment-friendly new energy charging pile. Winding wheel, the charging wire is connected with the charging interface and the charging gun; the charging wire is wound on the reel; the pull rod is pulled to move forwards, so that the reset spring is compressed to drive the locking column to be separated from the locking hole; the contact is used for fixing the reel; then clockwise or counterclockwise rotation, the length of the charging wire on the outer side of the reel is shortened or increased; loosening the pull rod, the reset spring resets to enable the locking column and the locking hole to be clamped, the reel is fixed, the length of the charging wire on the outer side of the reel can be limited, different wheels can be charged conveniently. Meanwhile, the charging wire is prevented from being scattered and is not prone to being stumbled by pedestrians or children, it is guaranteed that the charging gun cannot fall out, and the charging gun is more convenient to use.

The invention discloses a microwave pretreatment desulfurization coking device, and particularly provides a device for coking coal. The device comprises a coal blending process, a coal charging process and a coking process; and the method further comprises a microwave pretreatment process between the coal blending process and the coal charging process. The microwave pretreatment process adopts a microwave pretreatment device with the microwave frequency ranged from 300MHz to 300GHz for irradiating, dewatering and desulfurizing the blended coal; and the temperature of the pretreated coal sample is controlled between 150 and 250 DEG C; and then coal is prepared to be charged into a stove and coked. The microwave pretreatment device comprises a microwave reaction chamber body, a connecting device, a conveyor, an exhaust duct and a detection control system, wherein the connecting device, the conveyor, the exhaust duct and the detection control system are arranged among the microwave reaction chamber body, a coke stove coal tower and a coal charging trolley or a material bin. The device is simple; after being quickly preheated, dewatered and desulfurized, the blended coal can be coked so as to improve the bulk density, shorten the coking time and promote the yield of a single furnace as well as the coal quality; and clean and effective utilization of energy can be realized.

The invention relates to a portable adsorption type natural gas recovery device and method. The device consists of a gas collecting module, a machine pump module, an adsorption module and a control module, wherein each of the modules comprises a natural gas bottle or an LNG bottle, a gasifier, a buffer tank, a vacuum pump, a natural gas compressor, an ANG bottle, a control cabinet, a pressure, temperature and oxygen detecting probe and various valves; main body equipment of the device is mounted on a gasifier prying block, a buffer tank prying block, a vacuum pump prying block and a compressor prying block; the prying blocks are in bolt connection, so that in-site assembled prying can be convenient to perform, and a vehicle-mounted natural gas recovery device can be made, so that the movement and the operation are convenient. The ANG bottles can be demounted, and replaced, and system operation is not influenced. The device is provided with a vacuum system for vacuumizing the system. According to the portable adsorption type natural gas recovery device and the method disclosed by the invention, natural gas exhausted from the natural gas bottles or the LNG bottles is collected to the gasifier and the buffer tank; a compressor is used for compressing the natural gas through medium pressure into the ANG bottles to be stored, so that recovery is realized. When being required by outside, gas in the bottles can realize desorption for use of energy resources.

The invention relates to an automobile brake pad adopting carbon fiber reinforced composite material. The automobile brake pad adopting carbon fiber reinforced composite material comprises a brake padbase material and a friction plate, wherein a heat dissipation and noise reduction cavity is formed in the rear portion of the brake pad base material; a hard enclosure is arranged on the periphery of the friction plate on the brake pad base material; the hard enclosure is connected to a center friction plate arranged in the middle of the brake pad base material by means of a heat transfer plate;hinge connecting pieces are installed in the heat dissipation and noise reduction cavity, and heat dissipation and noise reduction elastic pieces are arranged between the hinge connecting pieces; anda fixed connection spring is arranged in the middle of each heat dissipation and noise reduction elastic sheet, and is fixedly connected with the back surface of the brake pad base material. According to the automobile brake pad, the carbon fiber modified resin and carbon fibers are mixed and other high-strength, high-hardness and high-toughness materials are added, thus the rigidity, the toughness and the thermal conductivity of the brake pad are improved; and the whole brake pad is ingeniously divided into four friction plates, the four friction plates have the braking effect on wheels at the same time, and the friction plates are integrally dispersed and connected with one another, therefore the abrasion resistance and the practicability of the brake pad are improved.

The invention relates to a program-controlled lamp source, in particular to a program-controlled lamp source and a control method thereof. The invention provides a program-controlled lamp source, which is capable of selecting lamp illuminating angle and is capable of focusing on a particular feature of an object for clear observation, and a control method thereof. The technical proposal of the invention is that the program-controlled lamp source comprises an illuminant, a lamp holder and a control circuit board, wherein, the illuminant is an LED lamp; the lamp holder has a bowl-shaped rubber structure, the exterior of the bowl-shaped structure is provided with a convection hole communicated with the interior; at least one layer of circular circuit board capable of controlling different areas via independent programs is embedded in a given angle in a groove inside the bowl-shaped rubber structure; the LED light and the circuit board are fixed and connected electrically; a USB interface communicating with a PC is connected electrically with the circuit board. The invention is capable of selecting lamp illuminating angle, is capable of focusing on a particular feature of an object for clear observation, and provides clear observation of plastic and metallic objects, and the like, thus enhancing measurement accuracy.

The invention provides a biomass particle combustor. The biomass particle combustor comprises feeding equipment, combustion equipment and blast air supply equipment, wherein the feeding equipment comprises a material pipe; the combustion equipment comprises an inner fire outlet pipe and an outlet fire guide pipe; the blast air supply equipment comprises a blast pipe, an outer air box and an inner air box; the inner air box is arranged inside the outer air box, and the blast pipe is communicated with the outer air box and the inner air box; the material pipe penetrates through the inner air box to be communicated with the inner fire outlet pipe; the inner fire outlet pipe is arranged on the outer wall of the inner air box and penetrates through the outer air box, and vent holes are formed in the inner fire outlet pipe; the outlet fire guide pipe is fixed to the outside of the outer air box to sleeve the part, outside the outer air box, of the inner fire outlet pipe, and a gap is reserved between the outlet fire guide pipe and the inner fire outlet pipe and communicated with the outer air box. The biomass particle combustor is reasonable in structural design, low in cost and high in combustion efficiency.

The invention provides a solar thermal power generation device based on double pulsating heat pipes. The device comprises a solar heat collector (1), a phase change thermal storage cavity (2), a high-temperature section pulsating heat pipe (3), a low-temperature section pulsating heat pipe (4) and a thermal power generation piece (5). The phase change thermal storage cavity (2) is filled with a phase change thermal storage material. An evaporation end of the high-temperature section pulsating heat pipe (3) extends into the phase change thermal storage material, and a condensation end of the high-temperature section pulsating heat pipe (3) is embedded in a channel of a high-temperature heat-conducting plate. An evaporation end of the low-temperature section pulsating heat pipe (4) extends into a channel of a low-temperature heat-conducting plate, and a condensation end of the low-temperature section pulsating heat pipe (4) is placed in an external environment. The thermal power generation piece (5) is placed between the low-temperature heat-conducting plate and the high-temperature heat-conducting plate. The double pulsating heat pipes are used, a high-temperature difference betweentwo sides of the thermal power generation piece all the time can be ensured, the thermal response is fast, the heat transfer efficiency is high, the phase change thermal storage material is used to store the heat energy absorbed by the solar heat collector, and problems of uneven temperature distribution and a small contact area in heat export are avoided while heat is stored.

The invention discloses a flame-retardant, heat-insulating, burn-through-resistant and metal-droplet-resistant multifunctional composite fabric and a preparation method thereof. The composite fabric sequentially comprises a flame-retardant heat reflection outer layer, a first heat insulation layer, a second heat insulation layer and a comfortable layer from top to bottom, the flame-retardant heatreflection outer layer is formed by compounding a base cloth layer and a functional film layer, the functional film layer is a high-temperature-resistant polymer film hybridized with heat reflection nanoparticles, the base cloth layer is a blended woven fabric of organic high-temperature-resistant fibers and common flame-retardant fibers or a common flame-retardant woven fabric, the first heat insulation layer is a blended fabric layer of intrinsic flame-retardant fibers and high-heat-shrinkage fibers, the second thermal insulation layer is a phase-change flame-retardant fabric layer, and thecomfortable layer is a viscose-covering polyester wet-permeable woven fabric layer. The composite fabric has multiple functions of flame retardance, metal molten drop resistance, burn-through resistance and heat insulation, and can be directly used for preparing protective clothing for high-temperature operation. The preparation method comprises the following steps: preparing each layer of fabric,and carrying out quilting to obtain the integral composite fabric.

The invention discloses a glass fiber cloth heat-conducting double-faced adhesive tape which is characterized by comprising a substrate (3) and heat-conducting adhesive layers (2), wherein the substrate (3) adopts a tabby glass fiber cloth layer; each heat-conducting adhesive layer (2) is formed by spreading a heat-conducting adhesive layer on one surface of the substrate by a scraper in a transfer coating mode; and the heat-conducting adhesive is a mixture of an acrylic pressure-sensitive adhesive, aluminum oxide powder, boron nitride powder, nano metal powder, nano graphite powder and a coupling agent. The adhesive tape disclosed by the invention has the advantages of favorable heat-conducting property, simple manufacturing technique and low cost.

The invention discloses a natural gas hydrate synthesis reaction kettle, which is mainly formed by a cylinder body 8, an upper flat cover head 9, a lower flat cover head 10, a temperature sensor 12, apressure sensor 13 and a stirring rod 6. The cylinder body 8 as well as the upper flat cover head 9 and the lower flat cover head 10 are fixedly combined into a reaction kettle body, and the upper flat cover head is provided with a gas inlet and outlet 2, the temperature sensor 12 and the pressure sensor 13; the lower flat cover head 10 is provided with a liquid outlet 5, and the side wall of thecylinder body 8 is provided with a liquid inlet 4; the stirring rod 6 and blades 7 are arranged in the kettle body, and a hollow channel 14 is arranged inside the stirring rod; four to eight air inlets 20 are horizontally distributed in the middle upper part of the stirring rod, and the blades 7 are also of hollow structures, and are communicated with the hollow channel of the stirring rod; air holes 18 with different diameters are distributed in the liquid backing surfaces of the blades. The natural gas hydrate synthesis reaction kettle provided by the invention has the advantages of reliable principle and simple operation, can effectively improve the gas-liquid contact area of the hydration reaction process and improve the hydration reaction efficiency, and can also be widely used in the related fields of the chemical industry, the petroleum and natural gas industries and the like.

The invention relates to the field of numerical control machining equipment, in particular to numerical control machine tool equipment capable of improving equipment reliability by improving environmental friendliness. The numerical control machine tool equipment comprises a vertically arranged support mounting cover, a support mounting cylinder is vertically arranged in the middle of the bottom of the support mounting cover, a translation mounting platform is horizontally arranged at the upper end of the support mounting cylinder, a guide supporting column is horizontally arranged on the upper half section of the interior of the support mounting cover, guide moving grooves are horizontally formed in the two sides of the middle area of the guide supporting column, and a moving mounting cylinder is vertically arranged in the middle of the guide supporting column. Chippings generated during machining of the device can be guided out and collected in time through a machining structure withair blowing, the machining face is ensured to be clean and neat, and the machining accuracy is improved; and through a porous air draft structure and a variable operation space structure, the devicecan complete non-toxic machining in a certain space, and is environmentally friendly, efficient, safe, stable and suitable for machining of machined parts of various sizes.

The invention discloses a punching scrap outputting device, and relates to the technical field of punching equipment. The device comprises a material holding plate which is arranged above a worktable and positioned under a lower die holder, wherein one end of the material holding plate extends out of the edge of the worktable and is used as a discharging end; the other end of the material holding plate is connected with a positioning pin sleeve; a pin shaft is mounted in the positioning pin sleeve in an inserting manner; the pin shaft is hinged to a vertically-arranged lifting rod; the lifting rod penetrates through a lower die and is connected with a guide sleeve fixed on an upper template; and limiting structures are respectively arranged on the lifting rod and the guide sleeve. According to the punching scrap outputting device disclosed by the invention, the problem that existing punching scraps cannot be output in time is solved.

The invention discloses a marker post convenient for detecting and positioning a gas leakage point, and relates to the field of gas pipeline marker posts. The marker post aims at solving the problemsthat an existing gas pipeline is inconvenient to carry out leakage alignment, the positioning is troublesome and not accurate enough, meanwhile, the detection operation is low in efficiency, the coverage range is small, the self-protection performance of a detection device is poor, and gas guide is inconvenient. According to the scheme, the marker post comprises a gas pipeline, a semicircular hollow pipe is arranged on the upper side of the gas pipeline, the upper end of the semicircular hollow pipe is fixedly connected with an eduction tube, the upper end of the eduction tube is connected with a first marker post and a second marker post, and the left side and the right side of the second marker post are connected with gas guide openings. The marker post has the advantages that the detection coverage range is greatly improved, the leakage point section can be effectively and timely detected, the positioning accuracy is greatly improved, meanwhile, the marker posts arranged at intervals are effectively utilized, and the leakage gas can be exported in time.

The invention provides a turbine molecular pump bearing block which is applied to the field of high-speed rotating machinery such as small turbine molecular pumps. The turbine molecular pump bearing block comprises a wave spring, a rotor shaft, a rolling ball bearing, a friction plate type radial spring, a bearing block body, a bearing end cover and a damping rubber ring, the friction plate type radial spring is mounted between an outer ring of the rolling ball bearing and an inner hole of the bearing block body, made of metal materials and has elasticity by the aid of friction lugs, vibration energy is dissipated through mutual friction between the friction lugs, so that radial vibration of a bearing is reduced, thermal conductivity is high by the aid of the metal materials, heat on the bearing can be timely dissipated, radial damping and heat transfer are realized by the aid of the friction plate type radial spring, axial and radial loads of the rolling bearing are reduced, and abrasion of the bearing is decreased, so that the service life of the molecular pump is prolonged.

The invention discloses a combined type milling cutter. The combined type milling cutter comprises a spindle, a clamping groove, a rotator, a connecting barrel, a connecting unit, a milling edge, scrap guide grooves, a hairbrush, a drilling bit, stoppers, cutting blocks, a fixing bolt, liquid outlets, a channel and branch pipes. The combined type milling cutter has the advantages that one end of the spindle is provided with threads, and the spindle is connected with the rotator through the connecting nut; the rotator is provided with a plurality of the scrap guide grooves uniformly distributed, which can timely guide out material scraps; the rotator is also provided with the hairbrush which can eliminate burrs produced during a milling process to improve the cleanliness of milled surfaces;the drilling bit is provided with a plurality of the stoppers which are connected with a plurality of the high-hardness cutting blocks, which can mill and drill high-hardness materials; the inside ofthe combined type milling cutter is provided with the channel allowing cooling liquid to flow in, which then flow out via the liquid outlets at the tops of the branch pipes to cool down the combinedtype milling cutter and further to avoid excessive wearing.