82results about How to "Long-term repeated use" patented technology

The invention belongs to a thermoelectric conversion technology field, specificly relating to a thermoelectric conversion battery, which solves the problem of a low converting rate of the thermoelectric conversion technical and a poor application effect in the existing technology. The thermoelectric conversion battery comprises heating poles for receiving electron, electron emitters and thermoelectric conversion materials between the heating poles and the electron emitters, wherein the emitters and heating poles are metallicl substance, and the thermoelectric conversion materials are made from pyrite. The said thermoelectric conversion battery of the invention can convert various heat energy into electric energy; it has an excellent sensitivity, even changes in the air temperature can make the thermal battery to generate current changes; it is a collection converter of ordinary thermal, so that the heating within 60-100 DEG C can get a very good thermoelectric conversion effect; and iy may use for a long period again and again.

The surface modification process of silicon carbide includes: soaking silicon carbide powder in mixed solution of concentrated sulfuric acid and hydrogen peroxide solution; taking out, flushing with deionized water and stoving; reacting with coupling agent for 1-4 hr; setting silicon carbide inside acetone solution for supersonic cleaning and centrifuging for 2-5 times to obtain processed silicon carbide; adding cross-linking agent to acrylic acid aqua and regulating pH to 5-9 with sodium hydroxide, sodium carbonate or sodium bicarbonate; adding initiator to form the polymerizing precursor solution; mixing processed silicon carbide and the polymerizing precursor solution to obtain surface modified silicon carbide. The product has grafting rate of 0.6-16.2 % and water absorbing rate of 3.0-30 g/g.

The invention discloses a 7beta-hydroxysterol dehydrogenase mutant with increased activity and stability which is obtained through molecular evolution, recombinant expression plasmid containing the 7beta-hydroxysterol dehydrogenase mutant gene and a recombinant expression transformant and a preparation method of a recombinant mutant enzyme preparation, and the invention also provides an application of the recombinant mutant enzyme preparation in ursodeoxycholic acid synthesis. The 7beta-hydroxysterol dehydrogenase has excellent activity and heat stability, can efficiently catalyze asymmetric reduction of 7-carbonyl lithocholic acid to prepare the ursodeoxycholic acid; the 7beta-hydroxysterol dehydrogenase is subjected to immobilization and then is subjected to couple by an enzyme method with the immobilized 7beta-hydroxysterol dehydrogenase, epimerization of a substrate chenodeoxycholic acid with low cost can be directly catalyzed, ursodeoxycholic acid can be prepared through continuous conversion, and the operation is simple. Compared with the prior art reported currently, ursodeoxycholic acid prepared by hydroxysterol dehydrogenase through catalysis has the advantages of high substrate concentration, short reaction time, complete reaction, and high product purity, and has strong industrial application prospect.

The invention discloses a room-temperature liquid-phase Claus process taking ionic liquid as media. The room-temperature liquid-phase Claus process includes pumping ionic liquid absorbing H2S and another ionic liquid absorbing SO2 into a reaction tower with baffles and stirring blades inside for action, pumping out the reacted ionic liquid containing solid sulphur via a pump, enabling the ionic liquid containing the solid sulphur to sequentially pass a filtering, washing and drying all-in-one machine and a flash tank, dividing the ionic liquid into two streams to enter two absorption towers for respectively absorbing H2S and SO2, and enabling the ionic liquid after absorbing the H2S and SO2 to return to the reaction tower so as to form circulation. The H2S is sourced from to-be-treated gas, and the SO2 is obtained from part of sulphur by burning. The filtered ionic liquid has good H2S and SO2 dissolution characteristics, and can be recycled for a long time; the developed room-temperature liquid-phase Claus process is low in operating temperature, small in energy consumption, free of VOCs (volatile organic compounds) emission and needless of subsequent tail gas treatment, can be used for producing high-purity sulphur, and is a green and environment-friendly liquid-phase Claus reaction innovation process.

The invention relates to a smoking device with a heat storage component. The smoking device is characterized by comprising a shell (1) and the heat storage component (2) arranged inside the shell (1). The heat storage component (2) comprises a heat storage material container (5) and a heat conducting element (7). One or more tobacco containing cavities (10) are defined by the heat storage material container (5) or defined by the heat storage material container (5) and external components jointly. Heat storage materials are placed into the heat storage material container (5). The heat conducting element (7) comprises a first heat conducting section (7a) and a second heat conducting section (7b), wherein the first heat conducting section (7a) is contained in the heat storage material container (5), and the second heat conducting section (7b) extends out of the heat storage material container (5). The smoking device and an external heat supply device can be connected in a pluggable mode to form a smoking system, heat storage and emission are achieved through phage change materials, and tobaccos are heated in the heat emission process. In this way, the smoking device can be provided with no battery or a small battery, the size of the smoking device is more approximate to a traditional spark ignition type cigarette, and the smoking device is convenient to use.

The invention belongs to a mechanical control device for preventing and treating termites of industries of agriculture and forestry and buildings. A pressure spring is arranged in a perforated external box body; a drug tube used for containing termite trapping drug is arranged on the pressure spring; a vertical rod indicating ball and a reflector are arranged at the upper end of the external box body; power is stored in the box body for the termite trapping agent by the gravity pressure spring; after the termites eats the trapping agent, the down-pressing gravity is reduced, and the pressure spring pushes the drug tube and a push rod upwards so as to push the reflector or a signal pipe to display the signals of change of the interior of the box body. The termite trapping control device is easy and convenient to arrange and check, and is easy to manage scientifically and popularize; and the termite trapping drug is arranged in a tubular tool so that the drug is not easy to lose or leak and further not to cause pollution or harm human body, and can be recycled. The termite trapping control device disclosed by the invention is applicable to killing and prevention of termites of various places such as new or old buildings, gardens, medicinal fungus fields, farming fields, dams and the like.

The invention relates to the technical field of surgery department medical instruments, and discloses a combined acetabulum file. The combined acetabulum file comprises a hemisphere tool rest and detachable blades, the axis of a hemisphere is adopted as the rotating axis of the acetabulum file, 2-5 pairs of cutting blades are mounted on the hemisphere face of the hemisphere, each pair of cutting blades are symmetrically arranged relative to the rotating axis, each cutting edge is divided into 3-6 sections by small gaps on the cutting edge, and the adjacent blades are spirally distributed along the hemisphere face. The cutting edges of the acetabulum file are not likely to be abraded and can be repeatedly used, after the blades are abraded, the blades can be replaced, and the cutting effect is good.

The invention discloses a three-direction-adjustable combined rod type inner supporting tool which comprises an X-direction sleeve, a Y-direction sleeve, a Z-direction sleeve, an X-direction nut buckle, an X-direction screw, an X-direction supporting plate, a Y-direction nut buckle, a Y-direction screw, a Y-direction supporting plate, a Z-direction nut buckle, a Z-direction screw and a Z-direction supporting plate. The invention further discloses a construction method of the tool. The construction method includes the steps of assembling, placing and adjusting of the tool. The invention further discloses application of the tool. Supporting strength of the tool can be adjusted freely, the tool is convenient to control, firm, less prone to wearing, high in practicability, good in using effect and convenient for popularization and use, construction efficiency and quality are improved, and comprehensive cost is lowered greatly.

The invention belongs to the technical field of photocatalytic environmental protection and particularly provides a multifunctional air purification lighting system for household use. The multifunctional air purification lighting system comprises an LED lighting system body for lighting, a function system body for air purification and a detection control system body. The LED lighting system body and the air purification function system body are controlled by the detection control system body so that the operation time and the corresponding power of the LED lighting system body as well as the operation time and the corresponding power of the air purification function system body can be determined. According to the multifunctional air purification lighting system, a 365 nm-400 nm ultraviolet LED light source is used for destroying the structure of DNA in bacteria, virus and other microorganisms, and a sterilization function is achieved; meanwhile, the ultraviolet LED light source is used for irradiating a nano photocatalytic filling layer to promote degradation of organic matters and elimination of peculiar smells, and a catalyst can be used repeatedly for a long time; the cleanliness and the comfort degree of the home environment can be effectively improved; and in addition, environmental protection, energy saving and low cost are achieved.

The invention discloses an inner geotextile bag sleeve valve pipe grouting construction method. On the basis of a conventional sleeve valve pipe grouting technology, a geotextile bag which can be filled with water and made by sewing impermeable geotextile is applied. After a sleeve valve pipe is inserted or first-time grouting is ended, the geotextile bag slightly longer than the sleeve valve pipe is guided to the bottom of the sleeve valve pipe through a cavity in the sleeve valve pipe, and clean water is poured into the geotextile bag till the whole cavity of the sleeve valve pipe is filled with clean water; when first-time grouting on holes to be injected with slurry starts or before repeated second-time grouting on the holes to be injected with slurry starts, the geotextile bag is taken out, and the remaining steps are the same as a conventional sleeve valve pipe grouting construction method. With the method, not only are the advantages of the conventional sleeve valve pipe grouting kept, but also the problem that slurry enters the sleeve valve pipe because of slurry mixing in the grouting process and the problem that the sleeve valve pipe is blocked because of deformation are solved, and meanwhile remaining slurry in the sleeve valve pipe can be removed effectively. The applied geotextile bag is easy to manufacture, low in cost, convenient to construct and capable of being repeatedly used and thus has very good application prospects.

The invention relates to a medical nursing article, in particular to a pair of waistband type urine collecting trousers for nursing of patients suffering from urinary incontinence. The pair of waistband type urine collecting trousers comprises a separable trouser body and a urine collecting combination device, wherein the urine collecting combination device comprises a waistband (1), buttons (2), a Velcro strap (3), rear fixing bands (4), front fixing bands (5), a urine collector (6), a urine collecting fixing piece (7), a urine collector connector (8), a flexible tube (9) and a connector (10); the separable trouser body comprises a detachable zipper puller (14), a separable zipper (15), a waistband locking band buckle (16), a waistband locking band (17) and trouser legs (18), the urine collector connector (8) and the urine collector (6) are communicated in a sealed manner and in inserted or threaded connection. The pair of urine collecting trousers can be repeatedly used for both the male and the female, is separable and is a combined trouser type urinary incontinence nursing device. The device is made of a cotton material, medical silica gel and a plastic material, all parts are in movable and combined connection, the positions of the combined parts are adjustable, the size adjustment range of the parts of the urine collecting trousers is large, and accordingly, the pair of waistband type urine collecting trousers is suitable for various human figures.

The invention relates to a device for measuring pipe thermal displacement. The device includes a light-gun pointer fixedly connected with a tested pipe. The light spot projection direction of the light-gun pointer is vertical to the direction of the pipe thermal displacement. A piece of coordinate paper is arranged on a light-spot projection position of the light-gun pointer. The measurement device does not include precision electronic elements such as sensors so that the device is simple in design, low in manufacturing cost, and convenient to install and use; and the measurement precision (1mm) of the device is capable of meeting thermal displacement measurement demands of the CEFR. The measurement device is long in service life and capable of being used repeatedly for a long term as long as attention is paid to protection of the device in an operation process.

The invention provides a building template release agent and a building template. The building template release agent comprises a component A and a component B, in percentage by weight, the componentA comprises 20-80% of resin, 20-80% of a solvent and 0-30% of a first auxiliary agent, and the component B comprises 70-100% of cyanoacrylate and 0-30% of a second auxiliary agent. The building template comprises a base board, a primer layer and a demolding layer, the primer layer and the demolding layer are sequentially arranged on the surface of the base board and are respectively formed by drying the component A and the component B in a building template demolding agent. The building template release agent comprises the two components, the two components can be used as release agents to supplement each other in effect, the component A and the component B can be bonded into a whole strongly while resisting acid and alkali, the component A is resistant to acid and alkali, the defect thata demolding layer formed by drying the component B is pulverized due to the fact that the demolding layer is not resistant to acid and alkali can be effectively overcome, the building template and concrete can be effectively separated, and the component A can be repeatedly used for a long time.

The invention discloses a heavy-current high-frequency plane inductor and a making method thereof. The heavy-current high-frequency plane inductor comprises a coil and a magnetic core arranged at the outer part of the coil, wherein an insulation sheet is arranged between the coil and the magnetic core. According to the heavy-current high-frequency plane inductor and the making method thereof, by adopting a plane magnetic core with an E type section, and no conventional winding framework exists, the magnetic core and the coil are directly insulated and fixed through plugging the insulation sheet; the coil is formed by welding a single-turn coil through silver welding, thus the mechanical strength of the coil is ensured, and the impaction of a heavy current is met; each turn of coil can be processed into a thinner and larger plane, thus the flattening of the coil is ensured, the heat radiation area of the magnetic core and the surface of the coil is increased, and the efficiency of the inductor is increased; the inductor is capable of meeting the miniaturization demand.

The invention discloses a mildew and insect proof agent, which is prepared by the following method: firstly, selecting 30 to 40 weight percent of dithiocyano-methane and 60 to 70 weight percent of sodium fluosilicate as raw materials; crushing the dithiocyano-methane and the sodium fluosilicate by a crusher respectively; sieving the crushed dithiocyano-methane and sodium fluosilicate respectively; fully mixing the sieved dithiocyano-methane and sodium fluosilicate evenly in a mixer; and finally, performing sealed packaging to obtain a finished product. The mildew and insect proof agent has low cost, simple operation and obvious effects.

The invention discloses a micro-differential pressure measuring device for detecting airflow of a pipeline, which comprises a U-shaped pipe carrying magnetic liquid. One end of the U-shaped pipe is wound with a first inner coil; the first inner coil is externally wound with a coaxial and equilong first outer coil; the other end of the U-shaped pipe is wound with a second inner coil; the second inner coil is externally wound with a coaxial and equilong second outer coil; the first inner coil and the second inner coil are serially connected with an AC input end; and the first outer coil and the second outer coil are in series-opposing connection and then serve as a data output end. Micro-differential pressure measurement in the pipeline can be realized by using a simple structure, the measurement precision and sensitivity are high, and the device can be used repeatedly for a long time.

Disclosed is a portable toothpick. The portable toothpick is for personal use; a toothpick part can be stored in a toothpick box after turnover, so that the toothpick is convenient to carry; meanwhile, the toothpick can be isolated from other objects, so that the toothpick is clean and safe; the toothpick part can be disinfected at any time; compared with a wood (bamboo) toothpick which is transferred by many people and carries much bacteria before use, the portable toothpick disclosed by the invention is more sanitary; the portable toothpick can be repeatedly used for a long time, so that a large amount of wood (bamboo) materials can be reduced, and green and environment protection benefits are achieved; and therefore, the portable toothpick is widely popularized and has a promotional value.

The invention discloses a modularized integrated square cabin based on negative pressure systems, and relates to the technical field of medical equipment. The modularized integrated square cabin comprises a plurality of isolation square cabin bodies and equipment square cabin bodies, the negative pressure systems are arranged in the isolation square cabin bodies, each negative pressure system comprises a negative pressure generating device, an inlet air filtering device and an exhaust air filtering device, the negative pressure generating devices are arranged at the bottoms of the isolation square cabin bodies, the inlet air filtering devices are arranged at air inlets of the isolation square cabin bodies, and the exhaust air filtering devices are arranged at air exhaust ports of the isolation square cabin bodies; and each equipment square cabin body comprises a power supply system and a water supply system, and main bodies of the isolation square cabin bodies and the equipment square cabin bodies are each of a modular structure defined by a bottom frame, side walls, a front end, a rear end and a top. The square cabin provided by the invention is high in strength, complete in function and simple to assemble, only the isolation square cabin bodies and the equipment square cabin bodies need to be placed at specified positions, the square cabin structure and equipment pipelines are spliced, a small-scale isolation hospital is formed, and the bed requirement is met.

The invention discloses a remote control and manual dual-purpose electrical high-voltage safety switch which comprises an insulating column, an upper and a lower conductive plates, a switch alloy contact, a magnetic and electrical conductive bar, a piston sheath, a short circuit current coil, an overcurrent coil and a control box but does not comprise a fuse, wherein one end of the upper conductive plate is connected with a wiring threaded rod on the upper end of the insulating column; the other end of the upper conductive plate is fixedly connected with the switch alloy contact; one end of the magnetic and electrical conductive bar comes into contact with the switch alloy contact; the other end of the magnetic and electrical conductive bar is inserted into the piston sheath and is connected with a central tap of the short circuit current coil through the piston sheath; one eduction end of the short circuit current coil is connected to a sheet copper connecting point of a wiring threaded rod on the lower end of the insulating column; one end of an insulating board on the lower end of the insulating column is connected with the wiring threaded rod on the lower end of the insulating column; the other end of the insulating board is connected with one end of the lower conductive plate; the other end of the lower conductive plate is connected with the piston sheath; one eduction end of the short circuit current coil and one end of the overcurrent coil are mutually connected into the central tap for connecting with the piston sheath; and the control end of the control box is respectively connected with the eduction ends of the short circuit current coil and the overcurrent coil.

The invention discloses a child fishing gear, and belongs to the field of sports supplies. The child fishing gear comprises a fishing rod, a line take-up unit, a fishing line, a fishhook, a buoy and a lead block, and further comprises an ejecting device, the ejecting device is installed on a holding end of the fishing rod, the ejecting device comprises a housing, an ejecting block, a limiting rod and a wrench, the housing is internally provided with a circular slideway, one end of the slideway is communicated with the outside, the other end of the slideway is closed, the ejecting block is located in the slideway, and a spring is arranged between the ejecting block and the closed end of the slideway; the limiting rod is located at the lower portion of the slideway, the limiting rod is connected with the housing through a hinge, a spring is arranged between the lower left end of the limiting rod and the housing, the bottom of the slideway is provided with a groove opening corresponding to the limiting rod, the left end of the limiting rod tilts upwards, and the upper end of the limiting rod extends into the slideway through the groove opening. The invention aims at providing a child fishing gear for safe casting and fishing.

The invention relates to a split cycloid disc numerical-control milling and positioning clamp which comprises a mold, an inner expansion sleeve, an outer expansion sleeve and bolts. The center of the mold is provided with a circular-ring-shaped groove and a cylindrical boss, wherein the circular-ring-shaped groove and the cylindrical boss share the same axis. The outer circumferential face of the cylindrical boss is coaxially connected with the inner expansion sleeve in a sleeved mode, and the inner circumferential face of the circular-ring-shaped groove is coaxially connected with the outer expansion sleeve. The outer edge of the mold is provided with two or more sets of bolt holes, and the bolts connected with T-shaped tables of a numerical-control milling machine are arranged in the bolt holes. The features that the expansion sleeves are good in centering performance and large in expanding force are utilized, the inner expansion sleeve and the outer expansion sleeve are used for being matched with the cylindrical boss and the circular-ring-shaped groove respectively to position an inner split disc and an outer split disc, the positioning manner is simple, accurate and reliable, after a cylindrical pin is used for being matched with a mold cylindrical pin hole to circumferentially position the inner split disc and the outer split disc, the same numerical-control program can be used for milling cycloidal tooth faces of the inner split disc and the outer split disc, and the positioning manner is simple and reliable.