636results about How to "Avoid direct exposure" patented technology

A suction bell assembly, and an elastomeric liner therefor, are disclosed in which the bell includes a rigid outer shell (10,310) of generally Y-shaped axial cross section with a conical top portion (101) and a cylindrical body portion (106). A thin, flexible, elastic liner (11) is disposed within the shell and has a conical and preferably corrugated upper portion (111) disposed within the conical top portion of the shell and a peripheral lip (114) for sealingly engaging a rim (19) extending about the shell's top portion. The liner also includes an elongated tubular portion 112 spaced normally inwardly from the shell's inner surface, the tubular portion including a resilient annular flange (119) that sealingly engages a shoulder at the lower end of the shell to maintain the liner in an axially stretched and tensioned state. one-way valve means (13,43) is formed integrally with the liner and is disposed at the lower end of the tubular portion below the flange (119). The valve means (13,43) includes a calotte-shaped closure portion (131) having at least one slit (28,438,439) to permit the passage of milk downwardly through the lower end of the liner. In preferred embodiments, each slit (28,438,439) has offset but communicating inner and outer portions (28a,28b,438a,438b, 439a,439b). Means are also disclosed for allowing swivel action of the shell (310) in relation to a connector (32) for detachably connecting the suction bell to a milk-collecting bottle.

The invention discloses a method for cultivating tea comprising the steps of, tea plantation sun screening, planting deciduous arbor around the tea plantation and between the tea trees, covering the tea plantation through rice straw and planting bean green manure, applying special-purpose fertilizer for organic tea, inoculating beneficial soil organisms and soil creatures including right amount of earthworm, finally carrying out irrigation through mini- sprinkling irrigation system in high temperature dry seasons.

The invention relates to a self-illumination display pixel. The self-illumination display pixel comprises a self-illumination circuit; the self-illumination circuit comprises a self-illumination device; the self-illumination display pixel further comprises an optical fingerprint sensing circuit; the optical fingerprint sensing circuit comprises a first TFT device and a photosensitive device; and a channel layer of the first TFT device is just below the photosensitive device. By means of the self-illumination display pixel, a fingerprint sensing function can be realized; and furthermore, the integral structure is optimized.

The invention relates to a negative pole of a lithium ion cell, which comprises a negative pole current collection body and a negative pole material loaded on the current collection body, wherein the negative pole material is divided into two layers, wherein one layer is a continuous layer positioned on the current collection body, while the other layer is a discontinuous layer positioned on the continuous layer. A method for manufacturing the negative pole comprises the following steps: loading slurry containing the negative pole material on the negative pole current collection body continuously, and drying the slurry; loading the slurry containing the negative pole material on the continuous layer at intervals, and drying the slurry to form the discontinuous layer on the continuous layer; and then performing calendering to obtain the negative pole. The structure not only can provide adequate space for the volume change of an active material and effectively inhibit the damage to the current collection performance in an electrode caused by the volume change in the charging and discharging processes of the active material, but also can prevent the current collection body from being exposed directly to deposit lithium dendritic crystals. A lithium ion secondary cell prepared by using the negative pole can keep high capacity, and the cycle performance thereof is greatly improved simultaneously.

The invention discloses a method for controlling weeds in a tea garden, which comprises the following steps: first, plowing is carried out on the ground between tea plant rows in winter to remove root systems of the weeds such as nutgrass flatsedge, alligator alternanthera, greenbrier, chinaroot greenbrier, cogongrass, smartweed, lygodium and the like; a high-quality organic fertilizer is applied in spring: a certain amount of rape seed cake fertilizer is broadcast; the ground is covered with rice straws in spring: after the rape seed cake fertilizer is broadcast, all tea plant rows in the garden are immediately evenly covered with a certain amount of the rice straws; the high-quality organic fertilizer is applied in summer: a proper amount of the rape seed cake fertilizer is broadcast at a certain time; and the ground is covered with the rice straws in summer: after the rape seed cake fertilizer is broadcast, all tea plant rows are immediately evenly covered with a certain amount of the rice straws. The method enriches biodiversity of the tea garden, improves the ecological condition of the tea garden, increases tea yield, improves the quality of tea leaves; in addition, the method has the advantage of simple operation, is easy to be accepted by tea growers and has great popularization and application prospect.

The invention relates to a door frame structure. The door frame structure comprises a door frame component, wherein the door frame component comprises a door frame body and a door shield line; the door shield line is arranged on one side of the door frame body; an anticollision groove is formed between the door shield line and the door frame body; and an anticollision strip is arranged in the anticollision groove, so that construction convenience is enhanced, high structural stability is achieved, the attractive effect is increased, the collision force of a door plate on the door shield line is reduced, the collision sound is reduced, and the environment-friendly and energy-saving effect is achieved.

The invention provides a method for improving the stability of a fuel cell catalyst and the utilization rate of the catalyst, which belongs to the technical field of fuel cells. A layer of conductive polyaniline with conjugated large pai bond structure is modified on the carbon surface of a Pt / C (platinum / carbon) catalyst through the in-situ chemical oxidation polymerization method, on the one hand, migration, aggregation and growth of Pt nano-particles on the surface of a carbon carrier can be prevented by utilizing strong interaction between polyaniline and the Pt nano-particles, and the stability of the catalyst can be further improved; on the other hand, the polyaniline is an excellent proton-electron conductor and simultaneously has excellent oxygen permeability, by covering the polyaniline on the carbon carrier, the probability of exposing the Pt nano-particles on a three-phase reaction interface of the fuel cell can be increased, and the utilization rate of the catalyst can be further improved. The method is simple and easy for operation, the production cost is low, and the catalyst prepared by adopting the invention can be applied in the fuel cells taking proton exchange membranes as electrolytes. The fuel cells manufactured by using the invention can be widely applied in electric vehicles, various spacecrafts, portable electronic equipment such as cameras, notebook computers, electric toys and the like.

The invention relates to a heating welding method for thermoplastic pipes. The method comprises the steps of Step 1, forming a metal mesh layer (12) on the inner wall of a plastic connecting piece (10); Step 2, performing inserting connection on the two thermoplastic pipes and the plastic connecting piece, and performing centering and positioning through positioning pins (14) in the plastic connecting piece; Step 3, sleeving an electromagnetic induction heating coil on the plastic connecting piece (10), and performing energization for heating; Step 4, performing heating till the two thermoplastic pipes and the plastic connecting piece are welded fully, and then performing deenergization; Step 5, performing cooling shaping. According to the method, the thermoplastic pipes or steel-plastic composites pipes are connected through the plastic connecting piece in advance and then fixed through electromagnetic heating hot melting, so that the traditional mode of heating before inserting connection is changed, the connection efficiency is improved, and meanwhile, the labor cost is reduced.

The invention provides a multi-light position multi-dimensional tunnel lighting mode which is composed of a plurality of dimensional lighting components, which are respectively the low-light position reverse lighting component, the homodromous lighting component, the transverse lighting component and the high-light position reverse lighting component. All the lighting components are independent on lighting functions, light color scope, lighting direction and lighting space, and can be individually adjusted. Each component is provided with a special light source and a light which are installed at low position and independently run based on the task characteristics, and the special demands on pavement lighting, space lighting and tunnel lighting can be met. The efficiency can be maximized in each task, so that the total lighting can be comprehensively optimized. With the adoption of the multi-light position multi-dimensional tunnel lighting mode, the shortcomings of the traditional tunnel lighting mode can be overcome; the light source and the light which have different functions perform relevant functions, so that a series of problems of tunnel lighting can be effectively solved, and the lighting efficiency can be greatly improved. The multi-light position multi-dimensional tunnel lighting mode is independently applied and developed based on the property of the low power and high light efficiency light source; the lighting mode of traditional tunnel light is completely removed; and the mode of simply replacing HPS (High Pressure Sodium) and MH (Metal Halide) lights with the LED lights can be changed.

A sunshade apparatus configured to inhibit the sun's rays, constructed with a plurality of flexible panels, having the ability to form a three-dimensional shape that provides a compact collapsible structure, and minimum assembly. The sunshade three-dimensional structure has the capability to easily adapt to an object or stand on its own.

The invention relates to a spring plug comprising an insulating handle and metal inserting sheets which are installed on the insulating handle. The front end surface of the insulating handle is provided with a settlement groove. The metal inserting sheets are fixedly installed on the bottom wall of the settlement groove. The external part of the metal inserting sheets is provided with a first insulating cylinder. The external wall of the bottom end of the first insulating cylinder is fixedly provided with a slide block. The internal wall of the settlement groove is provided with a slide groove which slides with the aforementioned slide block in a matching way, and the slide block is limited in the slide groove. The internal wall of the first insulating cylinder is fixedly connected with a transverse beam, and a compression spring is connected between the transverse beam and the bottom wall of the settlement groove. Electric shock can be effectively avoided, and the spring plug is simple in whole structure and convenient to use.

The invention belongs to the technical field of hydrogel and provides injected supermolecule hydrogel and a preparing method thereof. The injected supermolecule hydrogel comprises beta-cyclodextrin, gelatin and a coupling agent. Beta-cyclodextrin and a benzene ring in gelatin are combined in a subject and object mode by means of the hydrophobicity effect. The coupling agent is a silane coupling agent containing amino and / or epoxy bonds. Gelatin and the end, containing amino or epoxy bonds, of the coupling agent form covalent cross linking. The other end of the coupling agent is subjected to self-crosslinking to form a silicon dioxide network.

The invention discloses a packaging technology for a novel fingerprint lock device. The novel fingerprint lock device comprises a fingerprint recognition chip, a ceramic cover plate, a flexible PCB and a data processing chip. The packaging technology comprises the following steps: filling the surfaces of aluminum welding pads in blind holes of the fingerprint recognition chip with nickel metal layers to extend out of the upper surface and form bulges so as to form bonding pad thickening parts; coating the upper surface, having the bonding pad thickening parts, of the fingerprint recognition chip with a temporary bonding adhesive layer; bonding a glass supporting plate with the surface, having the bonding pad thickening parts, of the fingerprint recognition chip through the temporary bonding adhesive layer; thinning the lower surface opposite to the upper surface of the fingerprint recognition chip so as to reduce the thickness of the fingerprint recognition chip to about 150-300 microns; sequentially forming a first tapered blind hole, a second tapered blind hole and third tapered blind holes in the lower surface of the fingerprint recognition chip by etching gradually. After wafer-level chip packaging technology and a silicon through hole technology are integrated, a set of novel process is formed, so that the thickness is reduced, the total thickness of a product is greatly reduced and the reliability of the product is greatly improved.

The invention discloses a shielding-free laser -path-coaxial powder conveying method and a shielding-free laser-path-coaxial powder conveying device. The shielding-free laser-path-coaxial powder conveying method includes the steps of (1) forming a non-laser area and a laser area in an optical path formed by the fact that a laser beam is focused on a base material focus point via an annular reflecting and focusing mirror; (2) arranging a powder conveying pipe, which is used for conveying powder materials to the base material focus point, in the non-laser area to be kept away from laser radiation, and enabling a spraying nozzle of the powder conveying pipe to be coaxial with the center of the laser beam. The shielding-free laser-path-coaxial powder conveying method and the shielding-free laser-path-coaxial powder conveying device have the advantages that the powder conveying pipe is kept away from direct radiation of high-power laser and prevented from being damaged, and complete coaxiality of the laser and powder conveying is achieved.

A sunshade apparatus configured to inhibit the sun's rays, constructed with a plurality of flexible panels, having the ability to form a three-dimensional shape that provides a compact collapsible structure, and minimum assembly. The sunshade three-dimensional structure has the capability to easily adapt to an object or stand on its own.

The invention discloses a valve remote fault diagnosis system based on the IOT (Internet of Things) technology. An intelligent valve terminal communicates with main control equipment through a zigbee network, and the main control equipment communicates with a remote monitoring platform through the Internet. The intelligent valve terminal comprises a sensor module, a data collection module for collecting a sensor signal, and a zigbee module for sending the signal. The main control equipment comprises a zigbee module for receiving a zigbee network signal, and a GPRS module for transmitting the signal. The remote monitoring platform comprises a database module, a real-time display module for the real-time display of the data, and an alarm module. The sensor module comprises a pressure transmitter, a valve rod position sensor, a temperature transmitter, a VOCs sensor, and a valve rod torque sensor. The system is low in cost, is high in practicality, and is high in efficiency.

A pneumatic brake actuator has a spring brake actuator with spring and spring brake pressure chambers, and a service brake actuator with service brake pressure and pushrod chambers. A control valve has a seal that is moveable between an open position and a closed position for regulating fluid flow between the spring chamber and service brake pressure chamber. A first surface of the seal is in fluid communication with the service brake pressure chamber and a second surface of the seal is in fluid communication with a valve chamber that is not in fluid communication with the service brake pressure chamber or spring chamber. The seal moves between its open and closed positions based on a pressure in the service brake pressure chamber. Movement of the seal is not dependent on the rate of flow of fluid between the spring chamber and the service brake pressure chamber.

The invention discloses a two-dimension code generation method used in access control environment, and an apparatus thereof, and a two-dimension code verification method used in access control environment, and an apparatus thereof. The two-dimension code generation method comprises the following steps: determining user's key information corresponding to a two-dimension code; operating the key information and a user cipher according to a preconfigured algorithm to generate digital signature information; combining the digital signature information with the key information to generate false-proof information; and coding the false-proof information through a two-dimension code coding technology to generate a two-dimension code. The user cipher and the user's key information are processed to generate the digital signature information, and the digital signature information is integrated in the two-dimension cod, so the two-dimension code carries user's identity verifying information, and direct exposure of an access control cipher (the user cipher) is avoided, thereby the security of the user cipher is improved.

The invention discloses a big data platform security access system and method, electronic equipment and computer storage medium. The system comprises an authority authentication module, a data encryption and decryption module, an audit module and a gateway module, wherein the authority authentication module is suitable for managing authority information of a user role to data resources; the data encryption and decryption module is suitable for encrypting written data and decrypting the read data; the audit module is suitable for collecting a data operation log in a real time, matching the data operation log with alarm rules and performing real-time warning on data operation corresponding to the data operation log if the data operation log is matched with the alarm rules; the gateway module is suitable for performing rule detection on the data flowing into / flowing out of a gateway by utilizing preset rules and performing warning or blocking-up on data access conforming to the preset rules; therefore, the data security is improved, and the security of big data platform access is improved.

The invention provides a blind insertion fluid connector. After a plug and a socket are matched, the front end of the plug extends into a second shell and pushes a valve sleeve to forwards move, and at the same time, the back end of a valve element extends into a first guide cavity and pushes a sealing head to backwards move; and after a flow separating hole and a flow gathering hole are both positioned in a middle-section cavity, the socket and the plug are internally conducted. The blind insertion fluid connector achieves dual functions of pressure insertion and radial floating, reduces sealing rings, springs and other parts, prevents the sealing rings from exposing in a fluid, and is simple in structure and high in reliability. The sealing rings are stressed nonuniformly.

The invention discloses a safe and ventilated medical protective garment with a cooling function, which comprises a protective garment body. A ventilation device is arranged in the protective garmentbody, a cooling device is arranged on the ventilation device, and a filtering device is connected to the ventilation device. According to the invention, the ventilation device and a pipe for conveyingair are worn in the protective garment, the ventilation device and the pipe for conveying air are prevented from being directly exposed in a dangerous environment, and the possibility that the protection equipment is polluted is reduced; the filtering device is arranged on the protective garment, meanwhile, the filter element in the filtering device is arranged to be replaceable, and the filter element is convenient to replace; all hardware in the scheme is detachably connected with the protective garment, so that when the protective garment needs to be discarded, the hardware can be reused after being detached and disinfected, and resource waste is avoided; and the temperature in the protective garment is reduced by arranging a refrigerating device, and the wearing comfort of personnel is improved.

The invention provides a lighting device and a display system. The lighting device is applied to the display device and is arranged at the upper end of the display device, the lighting device emits light to form a lighting area to light the light emitting side of the display surface of the display device; the lighting area is provided with a first upper edge and a first lower edge, the display device is located outside the lighting area, a first included angle A is formed between the first upper edge and the horizontal plane, wherein A is larger than or equal to 30 degrees and less than 90 degrees, so that the lighting range of a light source structure is concentrated in an area right in front of the light outlet side of the display surface of the display device, namely on the position ofa keyboard and a mouse. The light does not irradiate the lighting device and human eyes so that the situations that the light irradiates the display device and is reflected to be dazzling and the light directly irradiate the human eyes to be dazzling can be avoided, the user can feel comfortable, and user experience can be improved.

The invention provides a continuous casting tundish and a manufacturing method thereof. The continuous casting tundish comprises a cup-shaped tundish body and a molten metal outlet, wherein, the tundish body comprises a tundish shell, a permanent lining and a working lining from outside to inside; and the molten metal outlet comprises a nozzle pocket brick, an upper nozzle, a refractory seal ring and a refractory ramming material, wherein, the middle part of the nozzle pocket brick is equipped with an upper nozzle mounting hole with a big end down inner diameter, the upper nozzle is matched with the nozzle pocket brick so as to ensure that the upper surface of the upper nozzle is leveled with that of the nozzle pocket brick or the upper surface of the nozzle pocket brick is slightly higher than that of the upper nozzle when the upper nozzle is installed in the nozzle pocket brick, the refractory seal ring is filled between the upper nozzle and the tundish shell, and the refractory ramming material is arranged above the refractory seal ring and / or the tundish shell and is filled in clearance between the nozzle pocket brick and the tundish body. The continuous casting tundish and the manufacturing method thereof have the beneficial effects that problems such as steel penetration in the upper nozzle pocket brick and the like are solved, the service life of the upper nozzle is prolonged, and the continuous casting heats per tundish of the continuous casting tundish are increased from 8-14 to 20-26, thus improving the qualification rate of a continuous casting billet, and lowering the continuous casting production cost.

The invention provides a deep ultraviolet light emitting diode package structure. The deep ultraviolet light emitting diode package structure comprises an insulating substrate, a light emitting diodechip, a soldering pad and a light transmissive component; wherein a groove is formed on the edge of the insulating substrate; the bottom end of the light transmissive component is bonded in the groove, and the light transmissive component and the insulating substrate together form a closed accommodating space; the light emitting diode chip and the soldering pad are located in the accommodating space; the soldering pad is disposed on the insulating substrate; and the light emitting diode chip is electrically connected to the soldering pad. The package structure provided by the invention binds the light transmissive component to the groove formed on the insulating substrate, so that the bonding material is not directly exposed to the deep ultraviolet light; therefore, the performance degradation of the bonding material is avoided, the sealing performance of the packaging structure is ensured, the shear resistance of the packaging structure is improved, and the service life of the packaging structure is prolonged.

The invention relates to a solar heat collecting, heating and heat insulating curtain wall and roof and solar air conditioner system which comprises a solar heat collecting, heating and heat insulating curtain wall and an air conditioner equipment pipeline system. The solar heat collecting, heating and heat insulating curtain wall is composed of a heat insulating mortar leveling layer 11, a fireproof heat insulating plate 12, a cavity layer 13, a solar heat absorption water tank 14, a panel solar heat absorbing water tank 14', a water tank connecting pipe 14L, a heat insulating frame 15, a sun shielding roller blind 1A, a lighting glass panel 16, a clamping and fixing bar 17 and a ventilation air conditioner system 4-1. In winter, an air conditioner ground is directly heated through a heat exchange water tank 44; and in summer, the sun shielding roller blind is put down for preventing direct irradiation of sunlight, refrigerant water is provided for the air conditioner ground and the solar heat absorption water tank for refrigerating through a water source heat pump or an air source hat pump. In addition, the ventilation air conditioner system can be used for directly conveying cool air of summer in the curtain wall and warm air of winter in the curtain wall into a room, the cool air forms convection with hot air in the room and the warm air forms convection with cold air in the room, and the purpose of greatly reducing energy consumption of an air conditioner is achieved.

The invention relates to an internal expansion groove type solar vacuum heat collection tube, which belongs to the technical field of solar heat collection facilities. The vacuum heat collecting tube includes an outer glass tube, the glass tube is set on the metal tube in the middle, and the metal tube is coated with a heat-absorbing coating. The middle of the metal tube is broken and connected by a wave expansion joint. The alloy transition pieces are respectively sealed with the extended ends of the two sections of metal tubes, the glass tube, the metal tube and the corrugated expansion joint are vacuumed to form a vacuum layer, and the middle part of the metal tube and the glass tube are respectively equipped with self-centering supports . The invention internally digests the expansion of the metal tube larger than the glass tube, simplifies the installation and connection structure; at the same time, it has sufficient strength and rigidity, and is convenient for system installation and integration, and is especially suitable for high-temperature and high-power solar thermal power generation and other occasions.

The invention relates to a fruit and vegetable washing machine using ultraviolet radiation for sterilizing and disinfecting, which comprises a washing drum for holding fruit and vegetable, and is characterized in that a disinfecting water pipe is internally provided with an ultraviolet radiation sterilizing lamp; the outlet of the disinfecting water pipe is communicated with the washing drum; the water after undergoing sterilization and disinfection by ultraviolet radiation enters the washing drum from the outlet of the disinfecting water pipe. The ultraviolet radiation sterilizing lamp conducts even and efficient sterilization and disinfection to the water for washing in the disinfecting water pipe, thereby preventing devices such as the washing drum and the like and objects to be washed from being directly radiated by the ultraviolet light, prolonging the service life of the vegetable washing machine and being not easy to destroy the nutritional ingredients of fruit and vegetable and being applied to washing machines of various structures.

The invention provides a nanostructured solid lipid carrier coating vitamin A palmitate and a preparation method. The nanostructured solid lipid carrier coating vitamin A palmitate comprises 1-15% of vitamin A palmitate, 0.5-5% of phospholipid, 3-30% of solid emulsifier, 2-15% of solid lipid, 2-10% of liquid lipid, 0.02-1% of inorganic salt, 0.01-0.8% of preservative and the balance of deionized water by weight. The preparation method comprises the following steps: melting and uniformly dispersing vitamin A palmitate, phospholipid, the solid emulsifier, solid lipid and liquid lipid to obtain an oil phase, mixing and heating the inorganic salt and the deionized water to obtain a water phase, adding the oil phase under stirring and adding the preservative after ultrasonic treatment and cooling in sequence, thus obtaining the nanostructured solid lipid carrier coating vitamin A palmitate. The stability and dispersibility of vitamin A palmitate are improved and permeation of vitamin A palmitate on skins is promoted by adopting the nanostructured solid lipid carrier.

The invention relates to a sealing rod laser liquid level meter, wherein the upper surface inside the long hollow testing rod whose one end is sealed, is arranged with magnetic float with reflective film, while it is sheathed with annular magnetic float, and two magnetic float have inversed polarities; the sealing head at the open is connected to the tester with laser and detector; the tester is formed by single chip, display and time expanding circuit; the laser and detector are packed in the end connected to the sealing head; the sealing head has relative connecting hole; the tester also can be arranged remotely with the testing rod; the laser, detector and connecting hole are connected via optical fiber. The invention uses sealing rod structure, to avoid the laser radiation on the mixing gas, with high safety; and the light resource is remote from the tested medium, to make the lighting surface and receiving surface of tester clean, and the invention has long service time; in addition, it uses time expanding circuit to improve the testing accuracy.