54results about How to "Guaranteed release" patented technology

The invention discloses semiconductor process equipment, and relates to the field of photovoltaics and semiconductors. The semiconductor process equipment comprises a bearing boat and a radio frequency isolation device, the bearing boat comprises a plurality of heating plates which are respectively used as radio frequency electrode plates or grounding electrode plates, each heating plate is provided with a heating piece, one end of each heating piece is led out relative to the corresponding heating plate, and each heating piece comprises a metal sleeve; the radio frequency isolation device comprises a first isolation assembly, the first isolation assembly comprises an isolation ring, and the isolation ring is connected to the metal sleeve and used for preventing radio frequency signals in the heating plate from being transmitted out through the metal sleeve. The problems of radio frequency leakage and the like can be solved.

The invention provides a pressurization environment simulation experiment device and method for a metal pipe in a hydrogen-doped environment. The invention relates to a pressurization environment simulation experiment device for a metal pipe in a hydrogen-doped environment, which comprises a gas source, pressurization equipment, a high-pressure hydrogen-doped environment mixing cabin, an environment humidity control system and a test cabin, the supercharging equipment and the environment humidity control system are respectively connected with the high-pressure hydrogen-doped environment mixing cabin through pipelines, and the high-pressure hydrogen-doped environment mixing cabin is connected with the test cabin through a pipeline.

The invention discloses cefixime granules and a preparation method thereof, the granules comprise cefixime, a filler, an adhesive, a wetting agent, a flavoring agent and pharmaceutically acceptable auxiliary materials, and the filler is a calcium hydrophosphate-hydroxyethyl cellulose compound. The cefixime granules prepared by the invention are simple in preparation method, stable in quality, non-degradable, not easy to generate impurities, better in suspension performance, better in dissolution performance, qualified and stable in quality after long-term storage, simple in preparation process and suitable for industrial mass production under damp and hot conditions.

The invention discloses an ultralow-temperature liquid intrusive pressure sensor calibration system and method and a sensor. The system comprises a vacuum heat insulation cavity, a temperature control cavity assembly, a pressure control cavity assembly, a pressure control gas assembly, a standard differential pressure gauge and a test cavity assembly. Wherein the temperature control cavity assembly comprises a temperature control cavity; the pressure control cavity assembly comprises a pressure control cavity, a pressure control cavity liquid inlet pipeline and a pressure control cavity exhaust pipeline; the pressure control cavity comprises an upper cavity body, a long neck tube and a lower cavity body; two ends of the long-neck tube are respectively communicated with the upper cavity and the lower cavity; the temperature control cavity and the pressure control cavity are located in the vacuum heat insulation cavity, the temperature control cavity wraps the lower cavity, and the test cavity assembly is connected with the lower cavity; a pressure control cavity liquid inlet pipeline, a pressure control cavity exhaust pipeline and a pressure control gas assembly penetrate through the vacuum heat insulation cavity and then are communicated with the upper cavity; the standard differential pressure gauge is connected with the upper cavity, a pressure control cavity pressure sensor is arranged on the pressure control cavity liquid inlet pipeline, the gas pressure intensity and the liquid pressure intensity of the gas space in the upper cavity are respectively tested according to the standard differential pressure gauge and the pressure control cavity pressure sensor, and the sum of the gas pressure intensity and the liquid pressure intensity serves as calibration comparison pressure; according to the invention, the influence of gas-liquid mixing relative output pressure can be avoided, and different pressure calibration tests of fixed-point temperature maintenance can be realized so as to meet the research and calibration requirements of the ultralow-temperature liquid intrusive pressure sensor.

A container sealing device installed on the neck of a container, a component of the container sealing device and a packaging container are composed of a cover component and a release component, the cover component is provided with a cover surrounding structure and a cavity cylinder structure, and the cover component is provided with a first buckle, a first positioning stop blocking buckle, a sealing piece, a supporting and pressing structure and an L-shaped concave chamber structure. The releasing component is provided with a thread or a clamping and blocking structure, a second buckle, a second positioning and stopping blocking buckle and a cutting structure. The cover component and the release component rotate mutually, so that the cutting structure of the release component starts to slide from the concave chamber structure, the transverse cutting effect is generated on the thinning connecting structure of the cavity cylinder structure to a preset position, the notch of the sealing piece is pushed to the outside of the cavity cylinder structure, and materials in the container sealing device are released into a container. The invention further provides a packaging container of the container sealing device, a packaging composition, an assembling method of the container sealing device and application of the container sealing device.

The invention provides a preparation method of a nano microemulsion loaded with rare saponin in red ginseng extract and American ginseng extract, which comprises the following specific steps: extracting the rare saponin in the red ginseng extract and American ginseng extract, preparing a nano liposome loaded with the rare saponin, modifying with modified sesbania gum and preparing the nano microemulsion loaded with the rare saponin. Hydrophilic and hydrophobic rare ginsenoside are simultaneously embedded in the nano-liposome, in addition, the nano-liposome is modified by adopting modified sesbania gum, and the nano-liposome is endowed with an outer membrane structure by adopting the sesbania gum modified by genipin and feruloyl oligosaccharide, so that the stability of the nano-liposome can be improved, the biological activity of the rare ginsenoside is ensured, and the bioavailability of the rare ginsenoside is improved. In addition, the rare ginsenoside can be released in an organism in a targeted mode, genipin and feruloyl in the modified sesbania gum interact with phospholipid molecules in the nano-liposome in the intestinal environment, decomposition of the nano-liposome is further accelerated, rapid release of the rare ginsenoside is achieved, and a new method is provided for research and utilization of the rare ginsenoside.

According to the oral care solution composition disclosed by the invention, glucanase is encapsulated by using a pH sensitive microcapsule, so that the stability and activity of enzyme in a complex oral environment are maintained. The pH-sensitive microcapsule is prepared from boric acid modified poly (2-hydroxyethyl methacrylate) (PHEMA), a boric acid group serves as a lactic acid specific ligand and is covalently bound and polymerized with a monomer of HEMA to form a pH-sensitive polymer, and in an oral acidic environment, disintegration of the polymer promotes release of glucanase, it is ensured that enzyme is released at a needed place and time, and the pH-sensitive microcapsule has the advantages that the pH-sensitive microcapsule can be used for preparing the oral cavity. Therefore, glucan in the oral cavity is accurately decomposed, bacterial adhesion and biofilm formation are reduced, and improvement of oral cavity microorganism balance and improvement of user experience are facilitated.

The invention discloses a miniature bending-resistant low-loss high-temperature-resistant optical fiber and a preparation method thereof. The optical fiber comprises a fiber core, an inner cladding layer, a sunken layer, a first outer cladding layer, a second outer cladding layer, an inner coating layer and an outer coating layer, the relative refractive index difference delta 1 of the fiber core ranges from 0.30% to 0.89%, the relative refractive index difference delta 2 of the inner cladding ranges from-0.002% to-0.08%, the relative refractive index difference delta 3 of the sunken layer ranges from-0.3% to-0.015%, the relative refractive index difference delta 4 of the first outer cladding ranges from-0.1% to 0.02%, and the second outer cladding is a pure silicon dioxide glass layer. The optical fiber has high bending resistance, high temperature resistance and hydrogen loss resistance, and can solve the problems of narrow wiring space, stress concentration after aging and hydrogen loss increase of the traditional optical fiber in high temperature and other environments.

The application discloses a multifunctional injectable hydrogel and a preparation method and application thereof, and relates to the technical field of multifunctional hydrogel preparation and application. In the preparation, CMC-AGE and OD-SH are prepared respectively, and DSPE-se-se-PEG@AC NPs nanoparticles are prepared, then the multifunctional injectable hydrogel is prepared by forming a hydrogel through CMC-AGE and OD-SH and adding DSPE-se-se-PEG@AC NPs nanoparticles and / or beta nerve growth factor. The application also includes the multifunctional injectable hydrogel prepared by the above method and the application thereof. The application constructs an in-situ hydrogel delivery platform with good biocompatibility, is used for co-delivery of DSPE-se-se-PEG@AC NPs and NGF, is used in ischemic stroke treatment, and reshapes the pathological microenvironment of a cerebral infarction area, so that cerebral ischemic injury is reduced.

The invention discloses a preparation method of a balanced polyunsaturated fatty acid pumpkin seed oil-multi-element probiotic composite microcapsule, and relates to the technical field of biological materials. Comprising a composite microcapsule, and the composite microcapsule takes mixed pressed oil and probiotics as a core material and takes a whey protein and Arabic gum mixture as a wall material; the core material is embedded in the wall material; the mixed pressed oil comprises pumpkin seed oil and linseed oil; the preparation method comprises the following steps: S1, preparing balanced polyunsaturated fatty acid mixed pressed oil; s2, preparing a microcapsule wall material; s3, activating and preparing the probiotics; and S4, preparing the microcapsule. According to the preparation method of the microcapsule, probiotics are delivered to a target position, and the microcapsule is helpful for establishing a stable bacterial colony of an intestinal tract.

The utility model provides a fixed pressure head simultaneously suitable for packaged and non-packaged products, as the fixed pressure head is provided with a plurality of sheets which are arranged and attached on the top cover, the strip-shaped pressure heads on the plurality of sheets are utilized to independently press and fix different parts of the products, and each sheet is independently provided with a release part, so that the fixed pressure head is convenient to use. All the strip-shaped pressure heads compress the release part to different degrees according to the product contact sequence, so that when an unpackaged product with components of different heights is fixed, pressure can be uniformly applied to the components of different heights of the product, the highest component is prevented from bearing all the pressure and being damaged, and therefore, the production efficiency is improved, and the production cost is reduced. The fixed pressure head can fix the packaged products with the same surface height, so that the application range and the universality of the fixed pressure head are improved; the utility model belongs to the technical field of automation equipment.

The utility model relates to a precast concrete member mold, and belongs to the technical field of concrete molds, the precast concrete member mold comprises three side molds with openings and a closed side mold which are fixed on a mold table, the surface of the mold table is coated with a release agent, the number of the side molds with the openings is three, two side molds with the openings are parallel to each other, and the other two side molds with the openings are parallel to each other. One side mold with the opening is parallel to the closed side mold, the other side mold with the opening is parallel to the closed side mold, the three side molds with the openings and the closed side mold are mutually spliced to form a rectangular frame, the side faces, close to each other, of the side molds with the openings and the closed side mold are coated with retarders, and each side mold with the opening comprises a side plate; the side faces, away from the mold table, of the side plates are each provided with an opening used for installing an outwards-extending steel bar in a penetrating mode, and the upper surfaces of the side molds with the openings are each detachably provided with a top plate. The demolding device has the effects of improving the demolding efficiency and reducing component damage.

The utility model relates to a novel tobacco product field, concretely is a kind of heating cigarette tobacco core section structure, its characterized in that: including from inside to outside arrangement's cylindrical hollow support, tobacco sheet and cigarette paper composition, tobacco sheet is wound several rounds around cylindrical hollow support, forms a tobacco core with hollow, and cigarette paper is wrapped outside tobacco core.The utility model has the beneficial effect that:1, use hollow support to support the hole produced in the process of sheet rolling, prevent collapse in the process of cutting.2, support adopts large-area hollow design, while supporting the hole, maximum limit guarantees the release of smoke.3, support can be sprayed or impregnated essence spice, and different flavors are added to cigarette.

The invention provides urban landscape water eutrophication monitoring and purifying equipment, and belongs to the technical field of water purification. Comprising a mounting main rod, a mounting floating plate, a water body purification assembly and an intelligent monitoring assembly, wherein the center of the mounting floating plate is arranged outside the mounting main rod in a sleeving manner through a through mounting opening; when the water body purification assembly treats a water body to be repaired, the light reaction tank is utilized, and the light reaction tank can decompose eutrophication related substances such as organic pollutants and algae in the water body through a photocatalytic reaction; the drug release mechanism can release chemical agents in a targeted manner, adjust the pH value of the water body and kill harmful microorganisms; the submerged plant main body can absorb nutrient elements such as nitrogen, phosphorus and the like in the water body, meanwhile, a habitat is provided for aquatic animals, the ecological environment of the water body is improved, the problem of eutrophication of the water body can be solved from multiple angles through the multi-mode combination, and the purification effect is more thorough.

The invention discloses an aerosol generating product with a segmented aerosol generating matrix rod, characterized in that it comprises a smoking core material segment (1), a breathable hollow segment (2) and a filter segment (3); the smoking core material segment (1) comprises a segmented aerosol generating matrix rod and an anti-seepage / heat-conducting cigarette paper wrapping the segmented aerosol generating matrix rod, the two ends of the segmented aerosol generating matrix rod are short rod segments (11) formed by gluing tobacco particles, and the middle is a scattered particle segment (12) formed by unglued tobacco particles; the breathable hollow segment (2) and the filter segment (3) are wrapped by forming paper (5) to form a mouthpiece, and the smoking core material segment (1) and the mouthpiece are connected by a plugging paper (4). The short rod segments (11) at the two ends of the invention can ensure that the unglued tobacco particles in the middle do not fall and scatter, and there is no adhesive on the surface and gap of the unglued tobacco particles in the middle, and the axial ventilation volume, porosity and smoke release of the aerosol generating matrix rod are guaranteed. A cigarette core with high porosity can not only increase the amount of smoke generated, but also simplify the structure of aerosol generating products.

The invention discloses soup capable of benefiting qi, nourishing blood and raising testis and a preparation method of the soup. The soup is prepared from 3-10 parts of American ginseng, 30-90 parts of astragalus membranaceus, 10-20 parts of colla corii asini, 10-20 parts of angelica sinensis in Min county, 1-5 parts of cornu cervi pantotrichum, 5-15 parts of schisandra chinensis, 30-50 parts of radix ophiopogonis in Sichuan, 10-20 parts of fructus lycii, 5-15 parts of polygonum multiflorum and 5-15 parts of pericarpium citri reticulatae. The qi-tonifying, blood-nourishing and testis-raising decoction is reasonable in compatibility, all the medicines have a synergistic effect, qi, blood, yin and yang are simultaneously regulated, and the qi-tonifying, blood-nourishing, yang-raising, blood-enriching, blood-activating, bleeding-stopping, liver and kidney-tonifying, essence and blood-replenishing, Chong and Ren meridians regulating and the like have the effects of tonifying yang and tonifying deficiency when being used for treating qi failure to control blood, qi and blood deficiency, tiredness caused by qi and yin injury and kidney-yang deficiency.

The invention relates to the technical field of parking space fireproof curtains, in particular to an automatic fireproof curtain device special for a new energy parking space, which comprises support columns and an application parking space, the application parking space is designed to be a standard parking space, and the support columns are arranged at four corners of the application parking space; the device further comprises an isolation mechanism, a fire extinguishing mechanism, a water inlet pipe, a switch assembly and a rotating assembly. The isolation mechanism is fixedly installed between the supporting columns, and when a fire breaks out, the isolation mechanism is powered on through an electromagnetic block to open a control block, so that a rotating assembly is quickly released; the fire extinguishing mechanism is installed in the middle of the isolation mechanism, the two ends of the water inlet pipe are installed on the supporting column and the fire extinguishing mechanism correspondingly, and the water inlet pipe introduces water flow into the fire extinguishing mechanism from the supporting column; the switch assembly is mounted below the fire extinguishing assembly, and the switch assembly can be driven by water flow to rotate by a certain angle so as to release fire-fighting sand; the rotating assembly is installed in the isolation mechanism.

The invention relates to the technical field of metal prostheses, in particular to a composite porous biological ceramic metal prosthesis and a preparation method thereof.The composite porous biological ceramic metal prosthesis comprises a metal matrix, the metal matrix is made of Ti6Al4V alloy and has a 30-70% gradient porosity structure, and the aperture range is 200-600 micrometers; the surface of the metal matrix is covered with the biological ceramic coating, and the biological ceramic coating is composed of the following components in parts by weight: 60-80 parts of hydroxyapatite HA; according to the present invention, the excellent mechanical property and the biocompatibility of the Ti6Al4V alloy are utilized, and the structural characteristics of the natural bone tissue are simulated through the design of the gradient porous structure; on the nanoscale, the synergistic effect of the HA and the beta-TCP crystals creates a dynamically changing biological activity interface. The stable structure of the HA provides a good adhesion matrix for cells, and the moderate degradation of the beta-TCP continuously releases calcium and phosphorus ions.

The utility model relates to the technical field of plastic moulds, and discloses a plastic mould capable of quickly demoulding, which comprises a bottom mould and a top mould, a mounting plate I is arranged on one side of the bottom mould, a mounting plate II is arranged on one side of the top mould, a demoulding rod is fixed on the mounting plate I, a demoulding groove matched with the demoulding rod is arranged on the bottom mould, and the demoulding groove is arranged on the top mould. An air supply assembly is arranged on the second mounting plate, and an air injection assembly is arranged on the demolding rod. According to the design of the utility model, an additional gas source is not required to be provided, and the gas is generated by utilizing the cooperative work of the gas supply component and the movement of the top die, so that the use cost of the die is reduced, and the design of saving the cost of the gas source has positive significance on the economy and sustainability of the die.

This application discloses a soluble microneedle composition of a GLP-1R agonist and its preparation method, belonging to the field of biomedical technology. It includes a needle body material and a base material. The needle body material contains a small molecule GLP-1R agonist, a penetration enhancer, and a soluble polymeric backbone material, and may further include pH adjusters, humectants, and stabilizers. The base material is composed of polylactic acid, polylactic acid-glycolic acid copolymer, cross-linked polyhyaluronic acid, cross-linked gelatin, polyvinyl alcohol, polyvinylpyrrolidone, polyvinylpyrrolidone-vinyl acetate copolymer, N-(2-hydroxypropyl)methacrylamide polymer, or combinations thereof. Through injection, centrifugation, and drying, an integrated microneedle structure with mechanical strength and rapid dissolution is formed. It can pierce the stratum corneum of the skin to form microchannels and rapidly dissolve and release oxaliplatin subcutaneously, achieving transdermal delivery, effectively reducing gastrointestinal exposure and first-pass metabolism, and improving drug utilization and medication adherence.

A pneumatic landing gear retraction and extension system with mechanical sequence control and rapid unloading capability includes: a gas supply mechanism, an unloading valve, and a retraction and extension mechanism; the unloading valve has a left-position functional state and a right-position functional state; when the unloading valve is in the left-position functional state, the outlet of the unloading valve is connected to the inlet; when the unloading valve is in the right-position functional state, the outlet of the unloading valve is connected to the exhaust port; when the retraction and extension mechanism needs to be deployed, the unloading valve is in the left-position functional state; the gas supply mechanism supplies gas to the unloading valve, which enters the hatch retraction and extension mechanism and the positioning trigger valve of each retraction and extension mechanism; when the gas drives the hatch retraction and extension mechanism to deploy to the position, the positioning trigger valve switches to the conducting state, delivering gas to the landing gear retraction and extension mechanism to drive it to deploy to the position; when the retraction and extension mechanism is deployed to the position, the unloading valve is in the right-position functional state; the residual gas in the retraction and extension mechanism is discharged to the atmosphere through the exhaust port of the unloading valve, realizing rapid pneumatic unloading.

According to the automatic locking driving device for lithium battery foil production, automatic wind-up roller replacement is achieved, the wind-up roller can automatically enter a positioning block through a bearing seat under the action of the gravity of the wind-up roller, and use is convenient and efficient. The pressing assembly is installed on the supporting base and controlled through the push-pull air cylinder, and locking and releasing of the wind-up roller are effectively guaranteed. The rotating motor controls the shifting fork to move, meshing driving and disengaging of the wind-up roller are effectively guaranteed, automatic wind-up roller replacing is achieved, manpower and capital are saved, potential safety hazards are avoided, meanwhile, roller replacing efficiency is improved, and the device is suitable for industrial large-scale use and popularization.

The invention relates to the technical field of packaging containers of products, and provides a container sealing device capable of releasing materials in an internally transverse cutting mode, the container sealing device is formed by assembling an inner cover and a control cover together, the inner cover is provided with a first buckle, a first positioning stop blocking buckle, a sealing piece, a supporting and pressing structure and a convex chamber structure, and the inner wall of a surrounding structure of the inner cover is provided with a thread or a clamping and blocking structure; a sharp structure which is in a protruding shape and points to the inner wall of the side wall of the control moving cover is arranged in the control moving cover, and the control moving cover is provided with a second clamping buckle and a second positioning stopping blocking buckle; the container sealing device is mounted at the neck of a container, the sharp structure starts to slide from the convex chamber structure by controlling the mutual rotation between the moving cover and the inner cover, the thinning connecting structure is transversely cut from the interior of the cylindrical enclosure structure of the inner cover to a preset position, and the notch of the sealing piece is pushed to the exterior of the cylindrical enclosure structure, so that the container is sealed. And the materials in the container sealing device are released into the container. In addition, the invention further provides a component of the container sealing device and a packaging container.

The application discloses a kind of functionalized magnetic beads, which are magnetic microspheres formed by wrapping magnetic beads with bifunctional nucleic acid, and can specifically bind mRNA.A fungal mRNA extraction kit composed of functionalized magnetic beads includes grinding material, lysing solution I, lysing solution II, magnetic bead binding solution, washing solution I, washing solution II and eluent.A mRNA extraction method includes sequentially adding grinding material, lysing solution I, lysing solution II, magnetic bead binding solution, washing solution I, washing solution II and eluent after sample pretreatment to obtain mRNA product.The application breaks through the traditional mRNA extraction method, obtains high-quality mRNA, and has the advantages of simple operation, safety, high sensitivity, good reproducibility and low cost.The mRNA obtained by the application can provide high-quality templates for RT-PCR detection, improve the specificity and sensitivity of detection, and has wide application prospects in the fields of clinical diagnosis of diseases, judicial identification, food safety detection, microbial detection and molecular biology.

The utility model provides a steam heater, and relates to the technical field of heaters. The steam heater comprises a shell and a heat exchange assembly arranged in the shell, and the heat exchange assembly is installed in the shell through a buffer assembly; the buffering assembly comprises a supporting column, one end of the supporting column is connected with the shell, and the other end of the supporting column faces the heat exchange assembly. The buffer spring is arranged between the supporting column and the heat exchange assembly; when a medium needing heat exchange enters the shell, the heat exchange medium makes contact with the medium needing heat exchange through the heat exchange assembly, and in the contact process, the heat exchange assembly eliminates thermal stress in the heat exchange process through the buffer spring. In order to ensure the stable operation of the heat exchange assembly, the lower end of the heat exchange assembly is supported by the buffer spring, so that the stress of the heat exchange assembly is released in the use process, and the deformation is eliminated.

The invention relates to the field of stainless steel processing equipment, and in particular to a 304 hot-rolled stainless steel coil processing device with good stability; the device comprises a bracket, wherein stainless steel coils axially along the front-to-back direction are respectively installed on the front and rear sides of the bracket through telescopic support components, a conveying component protruding from the surface of the bracket is installed on the side of the top surface of the bracket away from the stainless steel coil, a cutting component is arranged between the stainless steel coil and the conveying component, a clamping device is arranged above the bracket, the clamping device is installed above the bracket through a mobile support component, and the clamping device moves horizontally relative to the bracket through the mobile support component; the invention automatically separates the free end of the stainless steel coil through the movement of the clamping device, does not require additional equipment or manual operation, and simplifies the processing flow; the free end of the stainless steel plate is clamped by the clamping device, that is, the conveying roller and the clamping roller are clamped synchronously, so that the stainless steel plate is more stable during cutting and the cutting efficiency is higher.

The application discloses a semiconductor process equipment, and relates to the photovoltaic and semiconductor fields. The semiconductor process equipment comprises a bearing boat and a radio frequency isolation device. The bearing boat comprises a plurality of heating plates serving as radio frequency electrode plates or ground electrode plates respectively. The heating plates are provided with heating pieces. One end of the heating pieces is led out relative to the heating plates. The heating pieces comprise metal sleeves. The radio frequency isolation device comprises a first isolation component. The first isolation component comprises an isolation ring. The isolation ring is connected to the metal sleeves and is used for blocking radio frequency signals in the heating plates from being transmitted out through the metal sleeves. The application can solve the problems of radio frequency leakage and the like.

The utility model provides an auxiliary support for template processing, and relates to the technical field of template processing. According to the utility model, the auxiliary bracket assembly is arranged at the top of the bottom plate, the bracket is used for supporting a template or a workpiece, a plurality of insert cores and demolding insert cores are arranged on the bracket, the design of the insert cores and the demolding insert cores is mainly used for providing flexible adjusting and fixing functions, and the template or the workpiece is placed on the bracket; close combination of the template and the support is ensured through the insert cores, movement or deviation of the template in the machining process is prevented, the template can be conveniently separated from the support after machining is completed due to the arrangement of the demolding insert cores, the difficulty in manual demolding and the possible precision problem are avoided, and the machining efficiency is improved. The first demoulding insert core is used for preliminary loosening when the template is separated, and the second demoulding insert core and the third demoulding insert core provide a more accurate and stable demoulding function, so that demoulding is completed on the premise that the template is not damaged.

The invention relates to an aroma producing device for tobacco low-temperature aroma and a preparing method thereof.The aroma producing device comprises an external heat source, a heating appliance, a trap and a cold trap, and the method comprises the steps that after tobacco leaf raw materials are dried to the target water content, the tobacco leaf raw materials are smashed to obtain tobacco particles; homogenizing the moisture of the tobacco particles, and continuously heating at a preset temperature to obtain tobacco fragrance; purifying tobacco aroma through the trapping liquid, condensing, and trapping through a fixative to obtain the low-temperature aroma spice. Based on the preparation device, tobaccos are in a low-temperature state to continuously release low-temperature aroma, a water solution is supplemented to realize moisture homogenization of tobacco particles, release of the low-temperature aroma is ensured, aroma components are selectively adsorbed, some impurities and other gases are discharged, and better separation and purification effects are realized; the cold trap device is adopted to condense the gas captured by the solution so as to ensure that the low-temperature aroma is completely captured, and the preparation of the low-temperature aroma-producing substance of the tobacco is realized, so that the variety and flavor of the tobacco flavor are expanded.

The invention belongs to the technical field of engine lubrication, and particularly relates to an assembly for replacing an engine oil filter element without shutdown of an engine, which comprises a filter element, an engine oil supply oil duct and an engine main oil duct, and is provided with an energy storage oil duct, a waste oil discharge oil duct and an exhaust oil duct. A reconfigurable oil way system is constructed, the reversing valves are all controlled by a filter PLC in a centralized mode according to signals of an engine ECU, and therefore the system can be automatically switched among the four modes of normal work, energy storage intervention, filter element replacement and system exhaust. Before the filter element is replaced, the energy storage oil way temporarily supplies oil to the main oil way of the engine through switching of the valve group, meanwhile, an old filter element oil way is isolated and emptied, pressure fluctuation of an engine oil way is reduced, it is guaranteed that the oil way of the main oil way is smooth, the filter element is replaced without shutdown of the engine, and the continuous operation capacity and maintenance efficiency of equipment are remarkably improved.