23results about How to "Achieve barrier" patented technology

The invention discloses a charcoal-based alkali-activated resistance and control material as well as a preparation method and application thereof. The biochar-based alkali-activated resistance and control material comprises the following components in percentage by mass: 50-70% of in-situ soil and 30-50% of a colloidal material, wherein the colloidal material is an ash body material and a composite alkali activator, and the composite alkali activator is obtained by ball-milling active magnesium oxide and charcoal; the biochar-based alkali-activated resistance and control material has better early compressive strength under the condition of low gel-sand ratio, and the 7d compressive strength can reach 9.33 MPa; meanwhile, the existence of the charcoal can better adsorb and intercept soil pollutants, the anti-seepage performance is better, and the permeability coefficient can reach 2.4 * 10 <-10 > m / s; when applied to rapid prevention and control of emergency pollution sites, the composite material can be rapidly laid and formed, the pollutant seepage concentration is lower, and the composite material has great application prospects.

The invention discloses a coating composition, a coating and a preparation method and application of the coating, raw materials of the coating composition comprise 30-70 wt% of film forming matter and 30-70 wt% of composite filler, the composite filler comprises a first component, a second component and a third component, the first component comprises at least one of boron nitride, graphite and silicon carbide powder, the second component comprises at least one of boron nitride, graphite and silicon carbide powder, and the third component comprises at least one of boron nitride, graphite and silicon carbide powder. The second component comprises at least one of aluminum oxide, silicon dioxide, boric oxide, titanium dioxide and magnesium oxide powder, and the third component comprises at least one of nickel oxide, cobalt oxide, manganese dioxide and zirconium oxide powder. The coating provided by the invention has high lubricity, can effectively realize barrier between polycrystalline silicon and a metal matrix, can avoid direct contact between the polycrystalline silicon and the metal matrix, and slows down corrosion of the polycrystalline silicon to the metal matrix; and in the polycrystalline silicon deposition process, the polycrystalline silicon is difficult to gather and grow on the surface of the coating, so that the deposition of the polycrystalline silicon on the metal substrate can be effectively prevented.

The invention relates to the technical field of refrigeration equipment, and discloses a control method and device for refrigeration equipment, the refrigeration equipment and a storage medium. The control method comprises the steps that when the door body is in an open state, the evaporation fan is controlled to operate, and the driving device is controlled to work according to parameter information in the refrigeration space so as to adjust the opening degree of the air door. And when the door body is in the open state, the driving device is controlled to work according to the parameter information in the refrigeration space so as to adjust the opening degree of the air door. When the opening degree of the air door is changed, the area of the area where air can be discharged from the first air outlet, namely the area of the area where the air curtain is formed, can be changed, so that the area of the air curtain is matched with the parameter information in the refrigeration space, the area of the air curtain can be controlled according to the parameter information in the refrigeration space, and the optimal state in the refrigeration space can be continuously maintained.

The utility model relates to the technical field of engineering construction equipment, in particular to a civil engineering expansion joint waterproof structure which comprises two building bodies, a waterproof assembly is arranged between the two building bodies, and grooves are formed in the opposite side surfaces of the tops of the two building bodies. The device comprises a base, a groove is formed in the base, an inclined plate is fixedly mounted at the bottom end in the groove, fixed supports are fixedly arranged on the surfaces of the opposite sides in the groove, cover plates are arranged at the tops of the fixed supports correspondingly, telescopic grooves are formed in the surfaces of the opposite sides of the cover plates correspondingly, and extension springs and telescopic plates are arranged in the telescopic grooves correspondingly; groove bodies are formed in the surfaces of the opposite sides of the cover plates, telescopic columns, L-shaped push blocks and compression springs are arranged in the groove bodies correspondingly, through the arranged civil engineering expansion joint waterproof structure, waterproof protection can be conveniently conducted on an expansion joint, and the practical effect of the structure is improved.

The embodiment of the utility model discloses an in-phase peristaltic pump which is characterized in that a stop valve is arranged on the basis of an existing peristaltic pump, the stop valve is arranged outside a pump head, the stop valve is matched with the position of a roller in the pump head, and the stop valve is started at proper time, so that liquid is blocked in the pump head adjusting process; and the initial phases of the pump head are completely the same when the liquid is quantitatively output every time. In the liquid filling process, the release action that the hose is pressed by the rolling wheel is avoided, the influence of pulsation on quantitative transmission precision is eliminated, and the filling precision is improved. According to the scheme, the original advantages of cleanliness, easy maintenance, good controllability and the like of the peristaltic pump are reserved, meanwhile, accurate quantitative transmission of the peristaltic pump is achieved, the filling efficiency of the peristaltic pump is improved while the filling precision is improved, and the advantages of being low in cost and wide in adaptability are achieved.

The utility model discloses a microalgae culture raw water filtering device which comprises a culture pond body, a filter main body is installed on the side wall of the culture pond body, a connecting through hole is formed in the side wall of the end, close to the filter main body, of the culture pond body, the connecting through hole is communicated with the filter main body, a filter screen is arranged in the connecting through hole, and the filter screen is communicated with the filter main body. A cleaning mechanism for cleaning the filter screen is arranged in the culture pond body, the cleaning mechanism comprises a rotating rod rotationally connected to the inner wall of the culture pond body, a rotating plate is fixedly connected to the end of the rotating rod, a groove is formed in the side wall of the rotating plate, and a scraper is slidably connected to the interior of the groove; a circulating pump is mounted on the filter main body, and the water inlet end of the circulating pump is communicated with the filter main body. The water circulation filtering device is reasonable in structure, the filter screen is cleaned by arranging the cleaning mechanism, and microalgae are prevented from being adsorbed and blocked on the filter screen to cause blockage and influence the water circulation filtering effect.

The present application belongs to the technical field of ship vibration control structure or method, and particularly relates to a cantilever beam type phononic crystal for vibration isolation and a parameter optimization method. The phononic crystal comprises a power-law prism base, a cross-shaped cantilever beam and a mass block. The power-law prism base comprises a power-law prism part and a base part. The cross-shaped cantilever beam is a cross-shaped flat plate structure, and the mass block is located at the end of the cross-shaped cantilever beam. The cantilever beam type phononic crystal based on the present application can be used for vibration control of different materials and different thicknesses. In actual application, only the material parameters and thickness of the flat plate need to be substituted, and the other part sizes and materials of the cantilever beam type phononic crystal are designed according to the flat plate size and vibration source frequency, so that the band gap frequency range covers the load frequency, and the vibration of the target frequency can be blocked. The structure of the cantilever beam type phononic crystal based on the present application can use materials with different elastic moduli to prepare the cross-shaped cantilever beam and materials with different densities to prepare the mass block, so that the band gap frequency range can be adjusted conveniently and quickly.

The present invention discloses an integrated sewage utilization and disposal device based on solar energy, which belongs to the technical field of sewage treatment, and includes a mixing box, wherein the inner cavity of the mixing box is connected with a slow-motion component, and a neutralizer is added through the slow-motion component to make the sewage fully mixed in the mixing box; a plurality of graded treatment boxes are connected to the periphery of the mixing box, and a slow-flow box is connected to one side of the graded treatment box. In the present invention, the graded treatment boxes arranged in a honeycomb shape can be multi-stage expanded according to the installation area to meet the needs of integrated sewage layout of different scales, and the solar energy is stored through the solar cover to power the pumping equipment, which is conducive to the sewage treatment supplied by pure solar energy, and the connection of the connecting valves between adjacent boxes can be selected according to the needs, which is conducive to the rapid adjustment of the water liquid treatment process, and the adjustment and adaptation of the treatment process to different sewage conditions can be achieved, so as to meet the process adaptability adjustment of sewage treatment to different pollution conditions.

The present invention provides a coaxial positioning welding tool for titanium alloy tubes, belonging to the technical field of welding tooling; it comprises a base, and also comprises: a positioning assembly, wherein the positioning assembly is used to clamp and position two titanium alloy tube bodies, and the positioning assembly comprises a plurality of lower support seats fixed on the base, wherein two lower support wheels are rotatably connected in the lower support seats, and the lower support wheels are used to rotatably support the two titanium alloy tube bodies, and a driving motor for driving the lower support wheels to rotate is fixed on the side of the lower support seats. The present invention places the two titanium alloy tube bodies on the corresponding lower support wheels respectively through the setting of the positioning assembly, and the multiple lower support wheels on the base are of the same height, thereby ensuring that the titanium alloy tube bodies placed on the lower support wheels are concentric, and the pressure wheel is pressed on the top of the titanium alloy tube body by a hydraulic cylinder, thereby achieving the clamping and positioning of the titanium alloy tube body, and preventing the two titanium alloy tube bodies from being misaligned, thereby ensuring the coaxiality of the two titanium alloy tube bodies.

The invention belongs to the technical field of seismic exploration, and provides a portable shallow exploration seismic source device which comprises a storage battery, a stepping motor controller, a shell, a lead screw stepping motor, a buckle and unlocking mechanism, a heavy hammer and a strong spring. The upper end of the heavy hammer is attached to the inner wall of the shell. The strong spring is arranged between the inner side of the shell bottom and the bottom of the upper end of the heavy hammer; the upper end of the buckle and unlocking mechanism is fixed with the shell through the buckle; the lead screw stepping motor is arranged on the upper side of the buckling and unlocking mechanism. The bottom of the lower end of the buckle and unlocking mechanism is connected with the top of the heavy hammer; a transmission rod of the lead screw stepping motor is connected with the center of the pincerlike mechanism at the lower end of the buckling and unlocking mechanism. A reset spring is arranged between the upper part of the pincerlike mechanism at the lower end of the buckling and unlocking mechanism and a transmission rod of the screw rod stepping motor; the lead screw stepping motor is connected with the stepping motor controller. And the stepping motor controller is connected with the storage battery. The invention realizes a flexible, safe and environment-friendly seismic source exploration device.

The utility model discloses a fault monitoring device for an electric power circuit, and belongs to the field of electric power equipment. The fault monitoring device comprises a fault monitoring device body, a retention box is installed on the side face of the fault monitoring device body, and an assembly frame is arranged at the position, opposite to an air outlet of the fault monitoring device body, of the upper portion of the retention box; a motor is installed in an inner cavity of the retention box, a rotatable transmission rod is installed at the output end of the motor, a circular positioning frame is fixed to the outer portion of the transmission rod, an inner cavity of the positioning frame is divided into two assembling areas with the same size, and filter screens are installed in inner cavities of the assembling areas. According to the utility model, the structure of the dustproof part is improved, so that the frequency of removing the dustproof part for cleaning is effectively reduced, and the equipment can be used for a long time.

The utility model discloses a low-noise and low-radiation network communication cabinet, and relates to the technical field of network communication cabinets, in the low-noise and low-radiation network communication cabinet, an anti-radiation layer is fixedly arranged between a communication cabinet body and an inner layer plate, and the same anti-radiation layer is arranged on a door leaf in a matched manner; the radiation-proof layer is made of a lead plate material, has good radiation-proof performance, and can effectively prevent radiation from harming human bodies, so that the network communication cabinet can block radiation of internal equipment, the situation that radiation in a communication cabinet workshop exceeds the standard is avoided, the use safety of the network communication cabinet is improved, and the service life of the network communication cabinet is prolonged. According to the network communication cabinet, the sound-absorbing plate is arranged on the inner layer of the communication cabinet body and has the characteristic of absorbing sound waves, so that most sound wave energy is converted into mechanical energy or heat energy in interaction force between fibers and pores in the sound-absorbing holes, noise generated by working of internal equipment can be effectively absorbed, and the noise reduction function of the network communication cabinet can be optimized.

The utility model provides a motor encoder protective cover structure with fast disassembly and assembly and high sealing performance, which comprises a flange, the middle part of the flange is provided with an encoder mounting hole extending axially, the rear end of the encoder mounting hole is detachably provided with an elastic end cover, and the elastic end cover comprises a disc and an annular clamping part. The annular clamping part is circumferentially connected to the outer edge of the disc and extends backwards, the center of the disc protrudes backwards and is provided with a motor rotating shaft mounting hole, and the annular clamping part is embedded into the encoder mounting hole in an interference fit mode. The utility model has the advantages of quick disassembly and assembly characteristic, self-adaptive sealing capability and high-reliability locking.

The utility model relates to an enclosure capable of controlling water body exchange, and belongs to the field of water ecological management engineering. The enclosure comprises an enclosure body and two one-way valves, and the enclosure body is of a water-proof surrounding structure with the periphery closed and is used for surrounding submerged plants in water; each one-way valve is fixed to the side wall of the enclosure body, the mounting directions of the two one-way valves are opposite, and one one-way valve is used for enabling water to flow from the interior of the enclosure body to the exterior of the enclosure body; and the other one-way valve is used for enabling water to flow from the exterior of the enclosure body to the interior of the enclosure body.

The utility model provides a kind of construction safety management fence, it includes: pedestal, pedestal surface is attached with bottom plate, bottom plate is fixedly connected with rail plate bottom, and the through-hole for ventilation is set in rail plate middle part, rail plate is fixedly connected with wind baffle, and every wind baffle inner wall is rotatably connected with adjusting plate;Between rail plate, vertical plate is equipped, and vertical plate is fixedly connected with pedestal and ground respectively by stable mechanism.The application installs rail plate using multiple pedestals, realizes the convenient assembly of assembled type, utilizes vertical plate to realize the connection between adjacent rail plate, and cooperates stable mechanism to realize the stable installation of vertical plate, cooperates the overall stability of fence to be ensured with counterweight function pedestal, and the blocking of construction area is realized using wind baffle, simultaneously can realize air circulation, and the rotatable adjusting plate for adjusting the size of air inlet channel is simultaneously set, can be quickly adjusted according to use needs, improve the use performance of fence.

The invention relates to the technical field of solar heat utilization, in particular to a heat collection and storage integrated solar water heater which comprises a water heater body, a plurality of heat collection pipes, a storage box, a heat conduction box, a driving mechanism, an adjusting mechanism and a rotating plate. The storage box is installed at the rear end of the water heater body, the heat conduction box is installed on the outer side of the storage box, the driving mechanism is installed at the heat conduction box, the adjusting mechanism and the rotating plate are both installed in the storage box, and the heat conduction box controls the driving mechanism according to temperature changes of the outside and the heat collection pipe. The driving mechanism drives the rotating plate to rotate through the adjusting mechanism, circulation between the heat collecting pipe and the water storage tank is opened and closed along with heat, then water in the heat collecting pipe circulates when the outside heat is high, and heat in the water storage tank is blocked when the outside heat is low.

This application discloses a distance detection module and an electronic device, belonging to the field of distance detection technology. The distance detection module includes a support component, a light-emitting component, a photosensitive component, and an encapsulation component; the support component has a triangular longitudinal cross-section and is provided with a first mounting surface, a second mounting surface, and a bottom surface. A light-shielding portion is provided between the first mounting surface and the second mounting surface, and the light-shielding portion is located on the side of the support component away from the bottom surface; the light-emitting component is disposed on the first mounting surface for emitting light; the photosensitive component is disposed on the second mounting surface for receiving light; the encapsulation component is encapsulated on the outside of the photosensitive component and the light-emitting component, and the light-shielding portion protrudes from the encapsulation component.

The anti-blocking grinding cylinder comprises a cylinder body, an upper cover, a lower cover and a one-way switch assembly, the upper cover is arranged on one side of the cylinder body, and a mounting opening is formed in the center of the upper cover; the lower cover, the cylinder body and the upper cover are encircled to form an accommodating space, and the lower cover is provided with a feeding hole; the one-way switch assembly is arranged at the feeding port and used for controlling the grinding materials to be injected into the containing space in a one-way mode. According to the anti-blocking grinding cylinder, the one-way switch assembly is arranged, so that the anti-blocking grinding cylinder is connected with an external pipeline to inject grinding materials, meanwhile, a grinding medium can be effectively prevented from entering the external pipeline, machining is easy and convenient, and the cost is low. Meanwhile, the invention further provides a sand mill adopting the anti-blocking grinding cylinder. Due to the fact that the external pipeline is not prone to being blocked, feeding and processing stages are smoother, and feeding and processing efficiency of grinding materials is improved.

The utility model discloses a water supply and drainage pipeline protection structure, which relates to the technical field of water supply and drainage pipelines, is sleeved on the outer side of the circumference of a water supply and drainage pipe, and comprises a sound insulation and heat preservation layer arranged on the outer side of the water supply and drainage pipe, a buffer layer sleeved on the outer side of the sound insulation and heat preservation layer, and a protection shell sleeved on the outer side of the buffer layer. Ends are arranged at the two ends of the protective shell, and the inner sides of the ends are connected with the sound insulation and heat preservation layer and the buffer layer. The sound insulation and heat preservation of the water supply and drainage pipeline are achieved through the arrangement of the sound insulation and heat preservation layer, the water supply and drainage pipeline is evenly supported and prevented from being damaged due to external force through the matched arrangement of the buffer layer and the protective shell, and therefore the water supply and drainage pipeline can adapt to the complex stress environment; by arranging the buffer layer, under the action that the air bags are communicated through the communicating air pipes, all the air bags can form an integral buffer network, then pressure borne by the pipeline is distributed in the whole buffer network in a balanced mode, and pressure concentration at a single position on the pipeline is avoided.

The utility model discloses a large background light-emitting diode (LED) display screen, which belongs to the technical field of display devices and comprises a rubber frame fixed on a circuit board and a light guide plate arranged on the rubber frame and matched with the rubber frame, and the matching of the rubber frame and the light guide plate realizes that part of background light penetrates into a current touch display area. According to the utility model, the rubber frame is matched with the light guide plate, so that part of background light can penetrate into the current touch display area. The clamping groove is formed in the back face of the light guide plate, the rib lines of the rubber frame are embedded into the clamping groove, and therefore light of the background light source is partially blocked and partially penetrates into the current touch display area. The single-layer light guide plate is clamped on the rubber frame in a matched mode, so that the semi-bright background and the full-bright and semi-bright alternate flickering of the selected icon area can be achieved, the large background display effect of a simulated TFT screen can also be achieved, cost is low, assembly is convenient, the overall thickness is smaller, and more space is saved.

The application provides an alternator, which comprises a motor shell, a stator assembly arranged in the motor shell, a rotor assembly arranged in the stator assembly and connected with the motor shell, a rectification assembly arranged on one side of the motor shell, a heat dissipation fan arranged on the other side of the motor shell, and a middle shaft for connecting the rectification assembly, the rotor assembly and the heat dissipation fan, characterized in that the motor shell is symmetrically provided with a rear end cover and a front end cover on both sides, respectively, and a belt transmission wheel is fixedly arranged at one end of the middle shaft and extends to the outside of the front end cover. The filter mechanism is arranged, so that the particulate matter is blocked on the surface of the annular blocking net when the heat dissipation fan rotates to send the external air into the motor shell, and the particulate matter blocked on the annular blocking net does not completely cover and accumulate on the surface due to the annular structure of the annular blocking net, so that the heat dissipation fan can interact with the external air to the maximum extent.