107results about How to "Reduce inflow" patented technology

The invention provides a coaxial connector, and relates to the technical field of electric connectors, the coaxial connector comprises a female head, a male head and a filling member, one end of the female head is provided with a plugging groove, the male head is plugged in the plugging groove, a plugging gap is arranged between the peripheral surface of the male head and the groove side wall of the plugging groove, the filling member is arranged in the plugging gap, and the filling volume is variable. The filling part is arranged in the insertion gap and has an expanded state and a contracted state, the filling volume of the filling part in the expanded state is larger than the filling volume of the filling part in the contracted state, the peripheral surface of the filling part abuts against the wall surface of the insertion gap in a sealed mode in the expanded state, and a gap exists between the peripheral surface of the filling part and the wall surface of the insertion gap in the contracted state. According to the invention, the sealing performance when the male head and the female head are plugged can be ensured, so that the signal transmission efficiency is improved.

The invention discloses a self-regulation internal mold system for a prefabricated box girder, and relates to the technical field of prefabricated box girders. A displacement trolley is displaceably arranged at the top of the sliding seat cross beam; the side edge top plate and the side edge bottom plate are assembled by arranging the combined top plate, and the situation that an existing adjusting formwork is difficult to adapt to different widths in the pouring process is avoided by adopting transverse plate overall assembly and sectional assembly; the phenomenon that concrete on the middle side below the bottom film is difficult to vibrate and exhaust is solved through segmented installation, the phenomenon that the concrete flows into the bottom film and is solidified under the cooperation of side edge connecting pieces, and consequently an adjusting joint of a formwork loses efficacy is reduced, and by arranging a sliding base cross beam and a centering support of a displacement trolley, the formwork can be stably adjusted. The load of the side edge top plate is completely transmitted to the sliding seat cross beam through the double-shaft adjusting cylinder assembly, disturbance to concrete below the bottom film is reduced in the pouring process, and cracks are prevented from being formed in the concrete pouring process.

The invention discloses a natural gas supply device for an industrial furnace, which relates to the technical field of gas supply systems for industrial furnaces, and comprises an annular guide rail which is arranged at the side end of a gas inlet flow regulation and control valve pipe in a sleeving manner and is used for driving an adjusting shaft and an ultrasonic generator to be positioned at the side end of a gas inlet pipeline to carry out ultrasonic frequency emission regulation and control, under the cooperation of the oxygen-containing regulation and control assembly, the oxygen content proportion in the natural gas in the oxygen-containing conveying pipe is rapidly corrected, the precise oxygen content needed by combustion of the industrial furnace is guaranteed, super-uniform mixing of natural gas and oxygen is integrally achieved, the incomplete combustion phenomenon caused by fluctuation of the oxygen content is reduced, and the heating effect and the product quality are improved; and under the cooperation of the ultrasonic adjusting assembly, more complex pipeline impurity conditions can be treated, so that emission parameters and reflection angles of self-adaptive automatic adjustment ultrasonic waves are formed, natural gas conveying is smoother, and therefore the combustion stability and heat efficiency of the industrial furnace are improved.

The invention discloses a breathing machine pipeline fixing device which comprises a clamp, a supporting column, a connecting plate, a fixing column, a containing cylinder, a connecting rod, a first supporting plate, a bent rod and a second supporting plate. Wherein the clamp is used for clamping the edge of a sickbed; the supporting column is vertically arranged on the upper surface of the clamp; one end of the connecting plate is hinged to the upper surface of the supporting column through a hinge, and the connecting plate can do horizontal circumferential rotation along a hinge shaft of the hinge; the fixing column is arranged on the upper plate surface at the other end of the connecting plate; the two placing barrels are of hollow barrel-shaped structures with upper ends opened and lower ends sealed, are arranged on the two sides of the fixing column with openings facing upwards and are used for placing water accumulating cups; one end of the connecting rod is connected with the fixed column, and the other end extends away from the placing cylinder; the first supporting plate is arranged at the end, away from the containing barrel, of the connecting rod. The fixing device is used for fixing the breathing pipeline and the water accumulation cup, preventing the breathing pipeline from drooping and ensuring that the water accumulation cup is in a vertically upward state.

The invention provides an assembly type foundation pit awning system and method, relates to the field of foundation pit construction protection, and aims to solve the problems that an existing foundation pit dustproof awning is difficult to open according to needs and the flexibility is poor when a foundation pit is protected, a retaining wall mechanism and an awning mechanism are adopted to form an awning module, and the retaining wall mechanism is arranged on the edge of a foundation pit to serve as a supporting structure of the awning mechanism; according to the sky curtain mechanism, the telescopic support is used for driving the multiple movable fan blades to act, the movable fan blades are unfolded or folded, the unfolded movable fan blades can completely or partially shield a foundation pit opening where the movable fan blades are located, the folded movable fan blades can return to one side to open a foundation pit, and the purposes of flexibly opening and protecting the foundation pit are achieved. And the field work requirements of dust prevention, sound insulation, sun protection, heat preservation, rain shielding, shading and the like of the foundation pit are met.

The invention discloses a sealing structure for helium detection, detection equipment and a detection method. The sealing structure for helium detection comprises a first connecting body and a second connecting body, the first connecting body is provided with a first connecting surface; the second connecting body is provided with a second connecting surface; a first sealing assembly and a second sealing assembly are arranged on the first connecting surface; the first sealing assembly makes contact with the second connecting face to form a first sealing face, and the contact position of the second sealing assembly and the second connecting face forms a second sealing face. An isolation area is formed between the first sealing surface and the second sealing surface; the first connector is provided with an isolation assembly, and the isolation assembly is arranged between the first sealing assembly and the second sealing assembly; the isolation assembly comprises an isolation hole, one end of the isolation hole communicates with the isolation area, and the other end of the isolation hole is connected with a first evacuator; and continuously evacuating the isolation area through the first evacuating device. Interference of gas leakage on a test result can be reduced, and the test reliability is improved.

The invention provides a wafer testing method and system and a testing machine, belongs to the technical field of semiconductors, and can improve the accuracy and efficiency of wafer testing. The method comprises the steps that a test machine receives a calibration starting signal from a test board, the calibration starting signal is used for indicating that a wafer is placed at a designated position, and the designated position is a position where the wafer does not make contact with the test board and the distance between the wafer and the test board is smaller than or equal to a distance threshold value; the test machine sends an open circuit calibration instruction to the test board, wherein the open circuit calibration instruction is used for eliminating adverse effects of stray capacitance between the wafer and the test board on wafer test; the test machine receives the capacity value of the stray capacitor from the test board; and the test machine sends an open circuit calibration success signal to the test board, and the open circuit calibration success signal is determined according to the capacity value of the stray capacitance and is used for indicating that the open circuit calibration of the wafer is successful and indicating a probe of the test board to contact the wafer so as to test the wafer.

The invention discloses a titanium and titanium alloy cutting tool coating and a preparation method thereof, the titanium and titanium alloy cutting tool coating comprises a coating substrate and a double-layer coating deposited on the substrate, and the double-layer coating sequentially comprises a base layer and a functional layer from the substrate side to the surface side of the double-layer coating. The base layer is composed of a metal compound TiBx, and the functional layer is composed of a metal compound TaSiy. The titanium and titanium alloy cutting tool coating provided by the invention has relatively high wear resistance, high temperature resistance, oxidation resistance and bonding resistance, the bonding strength between the coating and a matrix is good, the production process is simple, the production cost is low, and the titanium alloy cutting efficiency can be effectively improved.

The invention discloses a polyethylene glycol complexing agent as well as a preparation method and application thereof and belongs to the technical field of medicines. The polyethylene glycol complexing agent comprises the following components in percentage by mass: 1-2% of mesenchymal stem cell source exosome modified by miRNA-138-5p, 1-2% of mesenchymal stem cell source exosome modified by miRNA-21, 1-2% of mesenchymal stem cell source exosome modified by lncGm36569, 1-2% of mesenchymal stem cell source exosome modified by mRNA of SNARE family protein, 1-2% of mesenchymal stem cell source exosome modified by mRNA of SNARE family protein and the balance of water. 1-2% of mesenchymal stem cell source exosome modified by mRNA (messenger Ribonucleic Acid) of syntachilin, and the balance of polyethylene glycol. The polyethylene glycol complexing agent disclosed by the invention can reconstruct spinal cord continuity and improve a spinal cord injury microenvironment, so that a neurological function is recovered.

The invention discloses a carp robot brain electrode waterproof adapter and carrying device and a using method thereof, and belongs to the field of biological control, and the carp robot brain electrode waterproof adapter comprises a plastic tube cavity, a brain electrode cap, a wire connecting cap, a connector, a clamping device, a supporting plate and a needle tube; the brain electrode cap, the plastic tube cavity, the wire connecting cap and the connector are sequentially connected through a thread structure and finally connected into the waterproof bag. The brain electrode is connected with a lead in the lead connecting cap in a plastic tube cavity through a rubber plug of the brain electrode cap by adopting an auxiliary device needle tube, so that waterproof switching between the brain electrode and the microprocessor is realized; and the clamping device and the supporting plate are used for fixing the device on the skull of the carp. The invention provides a waterproof treatment and carrying device for joints of brain electrodes and wires for underwater motion control of aquatic organism robots such as carps and the like. The device can be combined according to the number of the brain electrodes and can be detached for repeated use.

The utility model provides a rainfall drainage structure for building construction. The building construction rainfall drainage structure comprises a drainage pipe; the two mounting plates are fixedly connected to the top of the drainage pipe, mounting blocks are fixedly connected to the positions, located at one ends, of the tops of the two mounting plates through bolts, a fixing ring is fixedly connected to the adjacent faces of the two mounting blocks, and a filtering disc is fixedly connected to the position, located at one end, of the inner surface of the fixing ring; a rotating disc is mounted at one end of the inner wall of the filtering disc through a rotating structure, a partition plate is fixedly connected to the middle of one end of the inner wall of the rotating disc, and a butt joint bolt is arranged at the other end of the rotating structure. According to the rainfall drainage structure for building construction, the filtering structure is installed at the water inlet end of the drainage pipe, later cleaning is facilitated, silt or sundries are prevented from flowing into the drainage pipe and the butt-joint pipe, and the problem that the silt or the sundries are accumulated on the drainage pipe or the butt-joint pipe to cause blockage is solved.

The invention relates to the technical field of cutting, and provides a broken bridge aluminum door and window assembling and processing machine which comprises a base, a first motor is fixedly installed on the front portion of the base, a first threaded rod is fixedly installed at the output end of the first motor, a first sleeve is installed on the surface of the first threaded rod in a threaded mode, and a connecting rod is fixedly installed on the circumferential face of the first sleeve. A support is fixedly installed at the top of the connecting rod, a second motor is fixedly installed at the top of the support, a second threaded rod is fixedly installed at the output end of the second motor and is in threaded connection with a second sleeve, an electric push rod is fixedly installed on the circumferential face of the second sleeve, and laser cutting equipment is fixedly installed at the output end of the electric push rod. And a protection device is arranged at the top of the base. According to the technical scheme, the problem that in the prior art, when equipment works, workers are accidentally injured or other objects interfere with the equipment is solved.

The invention discloses fire preventing and extinguishing adhesive gel for the top of a coal mine goaf, a preparation method and application, and relates to the technical field of mine fire preventing and extinguishing. The method comprises the following steps: firstly, preparing a sodium alginate solution, then preparing a nano-clay-polydopamine composite material, and mixing and stirring the nano-clay-polydopamine composite material and the sodium alginate solution to obtain a mixed solution I; adding a sodium hydroxide aqueous solution into acrylic acid for partial neutralization, and adding the mixed solution I into the neutralized solution to obtain a mixed solution II; adding an initiator and a cross-linking agent into the mixed solution II, and uniformly stirring to obtain a mixed solution III; and finally, stirring the mixed solution III at a certain temperature to form gel, thereby obtaining the product. The prepared fire preventing and extinguishing gel is especially suitable for the top of a coal mine goaf, and shows excellent leakage stoppage performance, inhibition performance, adhesion and water-retaining performance.

The present application relates to a laundry treating apparatus comprising: a cabinet having a front panel provided with an insertion opening, a back panel forming a rear surface, an upper panel forming an upper surface, and first and second side panels forming both side surfaces; an outer tub having an outer tub main body provided inside the tank and storing water, and an outer tub insertion opening provided in the outer tub main body and communicating with the insertion opening; a drum rotatably provided inside the outer tub and storing clothes; an air supply part, the chamber main body is positioned between the upper panel and the outer barrel main body; the filtering chamber and the heat exchange chamber are arranged in the chamber main body and are connected with each other; a chamber supply flow path for guiding air inside the outer tub main body to the filter chamber and an outer tub supply flow path for guiding air discharged from the heat exchange chamber to the outer tub main body; the filtering part is arranged in the filtering chamber and is used for filtering air; and a heat exchange unit which is provided in the heat exchange chamber and sequentially dehumidifies and heats the air supplied from the filter chamber. And at least two surfaces of the chamber main body are fixed on the box body and are positioned between the outer barrel main body and the upper panel.

The invention discloses a salt and fresh water mixing irrigation device and method, and belongs to the technical field of agricultural instruments.The salt and fresh water mixing irrigation device comprises a pedestal, a mounting seat is fixedly connected to the upper surface of the pedestal, a connecting pump is fixedly connected to the mounting seat, and an input port and an output port of the connecting pump are connected with a middle pipe and a drainage pipe correspondingly. A swing rod, a first floating plate, teeth, a first gear and a control valve are adopted, when the fresh water level is high and the salt water level is low, the device can automatically reduce the inflow amount of fresh water and increase the mixing proportion of salt water, and vice versa, and the automatic adjusting mechanism ensures that under the condition that the water source condition fluctuates, the salt water can be continuously mixed. The device can automatically adjust the proportion of fresh water and saline water, the appropriate salinity concentration of irrigation water is kept, and no electric drive or manual intervention is needed. The system has the remarkable advantages that the system has the characteristics of automation and passive adjustment, so that the intelligence and efficiency of the irrigation system are improved, and the operation cost and the maintenance requirement are reduced.

The present invention relates to the field of punch press transmission technology, and specifically discloses a punch press transmission device, which includes a feeding mechanism and a dividing mechanism. The feeding mechanism can support and convey materials, and the feeding mechanism includes a first feeding area, a dividing area, and a second feeding area arranged in sequence perpendicular to its conveying direction. The dividing mechanism includes a guide component, an auxiliary dividing component and a sensing component, the sensing component is connected to the feeding mechanism, and is used to detect the distance between two adjacent materials in the first feeding area along the conveying direction. The auxiliary dividing component is connected to the feeding mechanism, and the sensing component is electrically connected to the auxiliary dividing component. When the distance is less than a preset value, the auxiliary dividing component is configured to drive the material to move to the dividing area. The guide component is arranged at the downstream end of the dividing area, and the front end of the guide component can abut against the material located in the dividing area to make the material flow to the first feeding area or the second feeding area. The punch press transmission device is used to divide the continuously processed materials and avoid material accumulation.

The invention discloses a new energy automobile energy chain diagnosis method and system based on cloud big data. Determining a plurality of use scenes according to the vehicle driving environment and the vehicle condition; screening out energy consumption data of key components in each use scene from the cloud big data; obtaining an energy consumption distribution probability density feature set of each key component in each use scene according to the energy consumption data of the key component; obtaining an energy consumption distribution characteristic value of each key part of the vehicle according to the energy consumption data of each key part of the vehicle to be subjected to energy chain diagnosis, the use scene and the energy consumption distribution probability density characteristic set corresponding to the use scene during the driving period; and when the energy consumption distribution characteristic value of a certain key component is lower than a set threshold value, considering that the energy consumption of the key component is abnormal. According to the invention, the vehicle with abnormal energy consumption can be checked at the vehicle offline detection stage, so that fault vehicles are prevented from flowing into the terminal; faults and positions of the faults can be quickly and accurately determined in a user use stage, and enterprises are assisted to monitor the faults.

The utility model relates to a post-cast strip sealing device capable of preventing garbage from entering, and relates to the technical field of constructional engineering. The post-cast strip sealing device capable of preventing garbage from entering comprises a shielding metal frame and a plurality of connecting metal frames, the connecting metal frames are used for being located on two wall bodies correspondingly and connected with the corresponding wall bodies, and the top end of each connecting metal frame extends in the direction away from the corresponding wall body; the two opposite sides of the shielding metal frame are connected with the corresponding connecting metal frames respectively. The post-cast strip shielding device has the following effects that related personnel can install the shielding metal frame on the wall body by arranging the connecting metal frame, so that the shielding metal frame shields the post-cast strip between the wall bodies, and meanwhile, the shielding metal frame and the connecting metal frame are made of metal materials; and the probability that the shielding metal frame and the connecting metal frame are damaged can be effectively reduced, so that the probability that external garbage enters the post-cast strip is reduced, and then the subsequent cleaning difficulty of the post-cast strip is reduced.

The invention discloses a pipeline protecting and repairing device suitable for soft geological conditions and a construction method thereof, and relates to the technical field of foundation reinforcement. The pipeline protecting and repairing device suitable for the soft geological conditions is characterized by comprising air compression equipment, a finished product vortex tube, a refrigeration tube, a heat dissipation tube, an exhaust tube, a one-way valve, a valve, a water collection tank, a floral tube, geotechnical cloth and crushed gravels. The device can be installed according to the paragraph length selected on site. According to the pipeline protecting and repairing device suitable for the weak geological conditions and the construction method of the pipeline protecting and repairing device, the vortex tube freezing device is arranged, soil around a current pipeline is frozen and used for stabilizing the soil around the current pipeline, and the purposes of protecting the current pipeline, reducing the possibility of river pollution and protecting the environment are achieved; soil around the current pipeline is frozen, and the current pipeline can be guaranteed not to be affected when a blind ditch groove is excavated.

The utility model discloses belong to rice processing technical field, concretely is a kind of rice grain screening device for rice processing, including screening box, the inner chamber of screening box is equipped with spherical filter box by rotating assembly, and several filter holes are equipped on spherical filter box, and the hard tube with valve is fixedly installed on the top of spherical filter box. The utility model is equipped with spherical filter box in screening box by rotating assembly, when rice grain is screened after completing rice processing, rice grain can be rolled in spherical filter box, vibration motor is not needed to be set, and the generation of noise is reduced to a certain extent.

The utility model discloses a system for preventing crystallization and blockage of a heat exchanger pipeline in phenol ammonia recovery, which is characterized in that the outlet end of a product gas water tank is communicated with the inlet end of a deacidification and deamination tower through a hot feeding pipeline, and the outlet end of the deacidification and deamination tower is communicated with the inlet end of an ammonia condensate tank through a pipeline; the liquid outlet end of the ammonia condensate tank is communicated with the middle of the hot feeding pipeline through a backflow pipeline, a first adjusting valve set is installed between the middle of the hot feeding pipeline and the inlet end of the deacidification and deamination tower, and the backflow pipeline is sequentially provided with a pump, a second adjusting valve set and a flow valve set in the flowing direction. The outlet end of the product gas water tank is connected with the inlet end of the heat exchanger through a pump; compared with an existing structure, liquid in the ammonia condensate tank directly flows back into the deacidification and deamination tower through the backflow pipeline to be subjected to deacidification and deamination treatment, the liquid does not flow into the product gas water tank any more, inflow of ammonia in the product gas water tank is reduced, water gas directly flows into the heat exchanger to be washed, and the heat exchange efficiency is improved. And the problem of heat exchanger pipeline blockage is avoided.

The utility model discloses an integrated water tank dehumidification mechanism which comprises a cabinet body, a counter is arranged at the top end of the cabinet body, water tank basins are arranged at the top end of the counter at equal intervals, water tank filter screens are installed at the center positions of the bottoms of the water tank basins, and connectors are arranged at the bottom ends of the water tank basins on the outer sides of the water tank filter screens. A side plate is arranged on the outer wall of one side of the lower end of the cabinet body; a dehumidifier body is mounted on the outer wall of the side plate; a fan is mounted at the lower end in the dehumidifier body; an air guide plate is mounted on the inner wall of the side plate; a part containing box is arranged on the outer wall of the cabinet body above the side plates, and a storage battery is installed in the part containing box. According to the utility model, the breeding rate of bacteria in the cabinet body is reduced so as to ensure the cleanliness in the cabinet body, the energy-saving property of the dehumidification mechanism in use is improved, and the dehumidification effect of the dehumidification mechanism on the interior of the cabinet body in use is ensured.

The utility model discloses an automatic feeding and metering device for BMC (bulk molding compound) liquid components, which relates to the technical field of BMC liquid and comprises a separation tank, a buffer tank is arranged on one side of the separation tank, a meter is arranged on one side of the buffer tank, a through pipe is arranged on one side of the separation tank, a limiting plug is arranged in the through pipe, a connecting rod is arranged at the bottom of the limiting plug, and the connecting rod is connected with the buffer tank. According to the BMC liquid feeding device, after the BMC liquid is separated in the separation tank, the separated BMC liquid is fed into the buffer tank through the through pipe, when the feeding amount is small, the BMC liquid can be accumulated and stored and then flows through the meter to be metered, the metered feeding is stable, when the feeding amount is too large, the BMC liquid is fed into the buffer tank through the connecting rod, and the floating block is arranged at the bottom of the connecting rod. The internal storage amount of the separation tank is too large, BMC liquid enables the floating block to float and drives the plug to float upwards, in the upward floating process, the plug can be limited to a certain degree through the limiting plug, the plug can block the through pipe so that feeding can be stopped, feeding can be slowed down so that buffering can be achieved, and metering of the meter is stable.

The invention relates to a rearview mirror metal piece automatic welding machine which comprises a workbench, a first feeding mechanism, a second feeding mechanism, a discharging mechanism and a welding assembly for welding a ball head and a mirror rod, the workbench is provided with an explorator and a positioning clamp, the positioning clamp comprises an upper tool, a lower tool and a third driving piece, the upper tool is slidably connected to the workbench, and the lower tool is slidably connected to the workbench. The lower tool is rotationally connected to the workbench, the third driving piece drives the upper tool to slide, when the upper tool slides towards the lower tool, the lower tool rotates towards the upper tool to be matched with the upper tool, when the upper tool slides towards the side away from the lower tool, the lower tool rotates towards the discharging mechanism, and the first feeding mechanism is used for conveying the ball head to the explorator. The second feeding mechanism is used for conveying the mirror rod to the lower tool. Automatic feeding of mirror rods and ball heads and automatic discharging of welded metal pieces are achieved; automation and safety are improved, and the possibility of potential safety hazards is reduced; and the possibility that the welded ball head is stressed to fall off is reduced, and the production quality of metal parts is improved.

The present application relates to the technical field of engineering construction, and in particular to a foundation pit support structure for civil air defense engineering and a construction method thereof, which includes: a foundation, which is laid at the bottom of the foundation pit and is used to form a construction surface; a plurality of foundation piles, which are formed at the bottom of the foundation pit and connected to the foundation, and are used to support the foundation; a seepage and drainage mechanism, which includes a plurality of seepage and drainage piles arranged at the bottom of the foundation pit, a plurality of the seepage and drainage piles corresponding to a plurality of the foundation piles are staggered and extended to the aquifer, the seepage and drainage piles penetrate the foundation and form a water storage cavity, and the seepage and drainage piles form a seepage and drainage mesh connected to the water storage cavity; a waterproof layer, a hydrophobic layer and a cushion layer are laid in sequence on the lower layer of the foundation; a water-stop curtain is formed in the soil layer and is arranged around the foundation; a side retaining wall is arranged on the foundation and is used to protect the side of the foundation pit. The present application has the effect of reducing water seepage in the foundation pit and reducing the impact on the quality of the building.

This invention provides a test tube storage device, belonging to the field of test tube storage technology. It includes a storage box, with a storage cover rotatably connected to one side of the upper surface of the storage box. A storage base plate, test tube rack, fixing components, a cooling plate, and a cooling fan are inserted into the lower surface of the storage box. This invention utilizes a design where a desiccant packet is placed inside the heat dissipation base after the heat dissipation cover is opened. The desiccant packet absorbs water, reducing condensation from the cooling element flowing into the heat dissipation base and outwards. The heat dissipation element dissipates heat from the cooling element, and the cooling fan draws heat from the cooling element into the heat dissipation base and expels it outside. The cooling element cools one end, and the cooling fan draws air from the storage box into the top of the cooling element for further cooling. The cold air is then expelled from the outlet into the storage box, further cooling it. This method preserves samples stored in test tubes within the storage box, slowing down sample metabolism and degradation, effectively inhibiting microbial growth and reproduction, and extending sample preservation time.

The utility model belongs to the technical field of soy sauce production, and particularly relates to a soy sauce production sterilization device which comprises a container, a feeding hole is formed in the top end of the container; the top end of the container is fixedly connected with a motor; the output end of the motor is fixedly connected with stirring blades; a groove is formed in the side wall of the container; a plurality of groups of heating rods are fixedly connected to the bottom end of the groove; the side wall of the container is fixedly connected with a water injection pump; the side wall of the container is fixedly connected with a water suction pump; the water injection pump and the water suction pump are connected into the groove; a discharge hole is formed in the bottom end of the container; by means of the structure, liquid in the groove can be rapidly heated, after sterilization of raw materials in the container is completed, the water injection pump and the water suction pump are matched, the liquid with high heat in the groove can be rapidly discharged, cooling liquid is injected again, and accelerated circulation liquid is matched with the raw materials in the container, so that cooling can be rapidly conducted.

The present application belongs to the technical field of cosmetic production, and discloses an acid-free acne-removing composition, comprising 10-20% of dipeptide-15, 1-5% of olive leaf extract, 5-10% of acetyl glucosamine, 0.1-1% of 10-hydroxydecanoic acid, 5-10% of yeast / zinc fermentation product, 1-5% of bisabolol, 5-10% of tetrahydromethylpyrimidine carboxylic acid, 1-10% of capryloyl glycine, 0.01-1% of polylysine, 28-32% of polyol and the balance of deionized water. Through the synergistic effect among the above multiple components, the antibacterial ability of the composition and the inhibitory effect on inflammatory factors 1L-1α and 5α-reductase are further improved. Moreover, the composition disclosed in the present application also has good anti-allergic ability. In addition, the present application also discloses the application of the acid-free acne-removing composition and a daily chemical product.

The invention provides a hydrogen fuel cell convenient for power supply, and relates to the technical field of cells, the hydrogen fuel cell comprises a cell fixing plate and a cell fixing cover, and the cell fixing cover is installed above the cell fixing plate; a protective cover is mounted between the battery fixing plate and the battery fixing cover; a guide sliding rail is mounted on the outer side of the protective cover; the side face of the guide sliding rail is provided with an open groove, and a metal conduction piece is installed in the open groove. A heating temperature control module and a catalyst detection module are mounted between the battery fixing plate and the battery fixing cover. The catalyst on the catalyst layer is heated by using the heating wire, the number, distribution and adsorption capacity of active sites on the surface of the catalyst are known by using an ascending-sequence heating adsorption and desorption curve method, the activity of the catalyst is evaluated, the detection efficiency is greatly improved, and the service life of the hydrogen fuel cell is ensured. The problem that the operation process is tedious and complex in the mode that a catalyst layer is directly detached from a battery for sampling detection is solved.

The utility model discloses a multi-stage treatment device for landfill leachate, which particularly relates to the technical field of landfill leachate treatment and comprises a landfill leachate treatment box, and the outer wall of the top of the landfill leachate treatment box is communicated with a leachate input square pipe. A drainage pipe is arranged on the side, away from the leachate input square pipe, of the bottom of the landfill leachate treatment box, a valve is installed on the drainage pipe, and a plurality of cleaning net racks are inserted into the leachate input square pipe at equal intervals. According to the utility model, the plurality of detachable cleaning net racks are arranged to carry out multi-time layered filtration on the percolate, part of impurities can remain in the cleaning net racks by utilizing the obstruction of the filter screens with different pore diameters, and the arranged cleaning net racks are convenient to take out from the interior of the percolate input square pipe, so that the filtered impurities are convenient to clean, and the filtering efficiency is improved. And the subsequent multi-stage purification treatment on the leachate can be realized.