2887results about How to "Reduce loss" patented technology

The invention relates to the technical field of drying equipment, in particular to clothing cloth drying equipment. The clothing cloth drying equipment comprises a box body, a discharging shaft for discharging cloths, a drying module, an ironing module, an air-drying module, a rolling shaft for rolling the cloths and a controller. The top of the left side of the box body is provided with a storinghole for storing the cloths, a damping piece mounted at the bottom of the box body is arranged under the storing hole, and the discharging shaft is vertically mounted on the damping piece. The dryingmodule is used for drying the cloths, the ironing module is used for ironing the cloths, and the air-drying module is used for air-drying the ironed cloths. The rolling shaft is located on the rightside of the air-drying module, a material taking hole for taking out the cloths is formed in the top of the box body over the rolling shaft, the rolling shaft is driven through a rolling motor, and the rolling motor is electrically connected with the controller. The clothing cloth drying equipment is mainly suitable for being used in a clothing manufacturing shop and has the characteristics that the size is small, the weight is small, the price is low, and energy consumption is little.

The embodiment of the invention provides an anti-blocking device and an anti-blocking method for a fuel loading and unloading system of a high-temperature gas cooled reactor, and relates to the field of high-temperature gas cooled reactors. The anti-blocking device of the high-temperature gas cooled reactor fuel loading and unloading system comprises a driving module, a transmission module, an execution module and a control module, the transmission module is connected with the driving module, the execution module is connected with the transmission module, and the transmission module is driven by the driving module to drive the execution module to do linear reciprocating motion. And the control module is connected with the driving module and the execution module at the same time. A cooperative structure of the driving module, the transmission module and the execution module is arranged, a driving signal is converted into linear reciprocating motion of the execution module, mechanical disturbance is applied to a fuel ball stack in a blocked area, the lap joint balance or a bridge junction structure of the fuel ball stack is damaged, and active bridge breaking and jam releasing are achieved. And the jam releasing efficiency and success rate are obviously improved.

The invention discloses a photovoltaic-driven IDC electric-cooling linkage method and device, and belongs to the technical field of IDC electric-cooling linkage, and the method comprises the following steps: S1, constructing a gravity energy storage structure; s2, the gravity object is lifted to the highest point of the gravity object channel through the gravity energy storage structure; s3, air at the bottom of the gravity object channel is compressed for the second time, and a thermal cracking reaction is carried out; s4, thermal cracking gas generated by the thermal cracking reaction is drained, and combustion products are discharged into a gas storage chamber; s5, the generated steam waste heat pushes a turbine in a turbine chamber to do work for power generation; and S6, domestic hot water and night heating hot water are prepared, convective heat exchange is conducted, the low-temperature reclaimed water obtained after heat exchange is heated into high-temperature steam in a cooler, the high-temperature steam enters a turbine to become high-temperature reclaimed water, and the high-temperature reclaimed water flows into a control center or a water storage pool. The organic matter compressed garbage is used as a gravity object for gravity energy storage, and heavy oil, solid fuel, adsorbents and other high-value products are produced in the gravity energy storage process.

The invention relates to the technical field of drilling parameter optimization control, and provides a petroleum drilling parameter optimization method and system and a storage medium. Comprising the steps that torque fluctuation amplitude and bit pressure response delay data are collected in real time, an original data sequence is constructed, and parameter trend data are obtained; analyzing the parameter trend data to identify a stratum change mode, extracting trend feature information, and when the trend feature information meets a preset condition, determining a corresponding abnormal mode identifier; generating a parameter adjustment direction of drilling control according to the abnormal mode identifier, and optimizing the parameter adjustment direction in combination with parameter weight analysis and a real-time feedback mechanism to obtain final optimization guidance data for guiding drilling operation; and mapping the final optimization guidance data to a control interface, and generating a dynamic adjustment instruction for drilling operation. The problems that in the existing petroleum drilling process, parameter adjustment lags behind, and stratum changes are difficult to adapt are solved, and intelligent optimization and dynamic control over drilling parameters are achieved.

The invention discloses a power distribution network reconstruction optimization method for improving distributed new energy bearing capacity, and relates to the technical field of intelligent power distribution network optimization. The method comprises the following steps: constructing an evolution state path diagram for describing a system operation state space-time evolution rule based on historical and real-time operation data of a target power distribution network; identifying a plurality of potential weak moments when the bearing capacity margin of the system is lower than a dynamic safety threshold value in a future prediction time domain based on the prediction operation data of time-space association; analyzing relevance and time sequence proximity of the running states corresponding to the plurality of potential weak moments in the evolution state path diagram, and clustering to generate one or more demand time periods with internal state consistency; and for each demand period, determining a unique optimal network topology and a corresponding switch operation instruction, and integrating the instructions of each period to generate a multi-period reconstruction scheduling scheme. According to the invention, unnecessary switching operation times are reduced while the new energy consumption capability is ensured, and the reconstruction optimization effect of the power distribution network is improved.

The invention provides a control method of a self-service washing machine door lock. The control method is applied to a server, and includes the following steps: the delay time of door opening sent bya client is received, wherein the delay time of door opening refers to the time after the washing process is finished; after a washing event is finished, whether the delay time of door opening expires or not is judged; if not, an unlocking instruction sent by the client is received, and a washing machine is controlled to open the door lock according to the instruction. According to the control method of the self-service washing machine door lock, washing machines in a washhouse can be efficiently utilized, and if users fail to take out clothes in time after washing is finished, the users needto reserve the delay time and pay for continued occupation of the washing machine.

The invention discloses a high-efficiency converter for adjusting the voltage of a power grid, and belongs to the technical field of power electronics. The converter comprises a first voltage regulation circuit, a second voltage regulation circuit, a filter circuit, a detection circuit and a control circuit. By detecting the amplitude difference between the power grid voltage and the load voltage, the control circuit automatically switches the Buck working mode or the Boost working mode, and stable alternating current output in a wide input voltage range is achieved. The invention has the advantages of compact structure, high efficiency, fast response, small harmonic wave and the like, and is suitable for industrial and civil occasions with large-range fluctuation and frequent power grid voltage.

The invention discloses a polarization degree and light intensity image fusion method based on bidirectional cross attention. The method belongs to the technical field of polarization imaging, computational imaging and image processing. The technical problems that in the prior art, dynamic balance between structural detail keeping and polarization saliency enhancing is generally difficult to achieve, and particularly under the condition of a complex background or a low signal-to-noise ratio, texture missing or noise artifacts are prone to occurring in a fusion result are solved. A fusion mechanism capable of establishing a two-way information interaction relationship between a light intensity image and a polarization degree image is provided, and further processing is carried out aiming at a noise problem, so that more stable and more reliable polarization fusion imaging is realized.

The invention discloses a wind and light storage cooperative control system based on source load matching. The system aligns a source load storage network and communication information and carries out credible evaluation; wind, light and load are predicted, and uncertainty levels are given; calculating a matching degree and a short plate hot spot, and combining network side hard constraints such as voltage, power flow and reverse transmission to obtain an acceptable boundary; when the matching is qualified and the complementary energy is still available, identifying the complementary energy / energy shortage and the reason, quickly checking the transferable margin and loss by the edge, generating a routing plan containing retention time and action budget, and scheduling the stored energy and the flexible load in a rolling manner; meanwhile, the risk budget and standby are written back according to feasibility, prediction uncertainty and communication quality, gray release and automatic rollback are achieved in cooperation with degradation and playback scoring, and consumption and traceability are improved.

The invention discloses a Fluent-based numerical simulation and experimental design method for shaking of liquid in a tank of a tank truck, and belongs to the technical field of numerical simulation of fluid dynamics (CFD). The method includes the steps that the hole opening position of the wave-proof plate serves as an independent variable, multiple hole opening position schemes are designed, liquid shaking related indexes are determined to serve as dependent variables, a geometric model is established according to the actual structure of a tank truck tank body, a fluid mechanics model and boundary conditions are set, a solver is configured, output parameters and numerical simulation initial values are set, and an experiment is executed. The liquid shaking process of a certain swash plate trepanning scheme is simulated, acting force data, namely shaking index data, between liquid shaking and the inner wall of the tank body is recorded, the advantages and disadvantages of each trepanning position scheme are evaluated based on the shaking index data, and the optimal scheme is determined. According to the method, a real object experiment is replaced by CFD numerical simulation, parameter setting is carried out, the experiment cost and the experiment risk are remarkably reduced, the experiment efficiency is improved, and data support can be provided for industry design.

The invention relates to the technical field of electronic transformers, and discloses a passive wireless high-reliability electronic transformer data reporting method, system and device and a medium, and the method comprises the steps: employing different reporting strategies for different types of transformer nodes when the residual electric quantity is lower than a threshold value; and the timeliness of data reporting and the power consumption are effectively balanced. For a mutual inductor node undertaking a core parameter monitoring task, basic report data is sent at the lowest report frequency, stable transmission of core data is ensured, and excessive power consumption is avoided at the same time; and for non-core parameter monitoring task nodes, temperature, voltage and current data are sent at a preset reporting frequency, so that the electric quantity loss is further reduced while important data are reported. And through a mode of temporarily storing other collected data, unnecessary data transmission is avoided, and the use efficiency of the electric quantity is improved. The reliability and the stability of the system are improved.

The invention relates to the technical field of riverway desilting, in particular to a riverway self-adaptive desilting system and method based on intelligent water level perception, and the method is executed by a central control unit and comprises the four steps of model construction and benchmark calibration, real-time monitoring and siltation diagnosis, precise survey and operation planning and closed-loop execution and model synchronization. The system comprises a central control unit, a water level intelligent sensing array, terrain scanning equipment and dredging machinery, according to the method, the three-dimensional digital riverbed model is constructed, the sedimentation state is dynamically judged in combination with the water level sensing data, an accurate desilting operation scheme is generated, and operation closed-loop control is achieved. According to the method, navigation and ecological riverway dredging requirements are considered, the dredging precision and automation level are improved, the operation cost is reduced, intelligent transformation of riverway management is promoted, and an efficient solution is provided for long-acting treatment of the riverway.

The invention discloses a low-dielectric low-loss high-strength borosilicate glass ceramic composite material and a preparation method thereof, and belongs to the technical field of borosilicate glass ceramic composites.The low-dielectric low-loss high-strength borosilicate glass ceramic composite material is prepared from, by weight, 70% of low-alkali borosilicate glass ceramics with the low borosilicate ratio, 29% of Al2O3 and 1% of Bi2O3. The preparation method comprises the following steps: preparing low-alkali borosilicate glass ceramics with a high borosilicate ratio, melting the low-alkali borosilicate glass ceramics with the high borosilicate ratio and amorphous SiO2 at a set temperature to obtain the required low-alkali borosilicate glass ceramics with the low borosilicate ratio, and finally mixing and ball-milling the crushed and ground low-alkali borosilicate glass ceramics with Al2O3 and Bi2O3 to obtain the low-alkali borosilicate glass ceramics with the low borosilicate ratio. And finally, the borosilicate glass ceramic composite material is sintered at the temperature of 880-900 DEG C. The borosilicate microcrystalline glass ceramic composite material is low in dielectric, low in loss and high in strength.

The invention discloses an ultra-wideband multi-system combining platform containing an NR4.9 G frequency band. The combining platform comprises a front-stage combining module, a higher harmonic suppression filtering module and a final-stage combining module, wherein the pre-stage combining module is a common multi-system combining platform and covers 2G, 3G and 4G system signals of mobile communication, and the frequency band is 698-2400HMz; the higher harmonic suppression filtering module is used for frequency selection of the working frequency band of 698-2400MHz of the preceding-stage combining system and suppression of higher harmonics and clutters within the frequency band bandwidth of 2500-5000MHz; the final-stage combining module adopts a hierarchical combining design, NR2.6 G, NR3.5 G and a higher harmonic suppression filtering unit are used as a first stage, NR4.9 G is used as a second stage, the working frequency of the final-stage combining module covers 2515-2515-4960 MHz, and the final-stage combining module comprises a mobile NR4.9 G system. The system has the advantages that existing 2G, 3G, 4G and 5G system frequency bands and an NR4.9G system are integrated and applied to wireless public network coverage, and co-construction and sharing of existing resources within the working frequency band of 698-4960 MHz are achieved.

The invention relates to the technical field of power system frequency control, and particularly discloses a power optimization distribution control method based on a wind storage combined frequency modulation system, which comprises the following steps of: synchronously acquiring a power grid frequency modulation instruction, wind power output, an energy storage charge state and adjustable power capacity data; extracting wind power fluctuation frequency and amplitude characteristics and energy storage charge and discharge depth and response rate characteristics; by taking the features as state constraints, constructing a multi-objective optimization model taking the highest frequency modulation tracking precision and the minimum energy storage life loss as objectives, and solving the multi-objective optimization model to obtain a power optimal distribution coefficient; generating a wind power smoothing instruction and an energy storage amplitude limiting instruction according to the coefficient, and issuing and executing; collecting actual response data to calculate deviation, and dynamically correcting a weight coefficient and a constraint boundary of the optimization model; according to the invention, dynamic collaborative optimization of wind storage power is realized, and energy storage cycle loss and response deviation can be reduced.

The application relates to a soft-shelled turtle clean breeding technology field, and discloses an automatic water-changing soft-shelled turtle clean breeding device, which comprises a storage pond, a fixed frame is fixedly installed on the inner wall of the storage pond, two bearings are fixedly installed on the inner wall of the fixed frame, filter cartridges are embeddedly installed on the inner ring walls of the two bearings, a positioning plate is fixedly installed at the upper end of the storage pond in the filter cartridges, two limiting sliding grooves are formed in the upper side of the positioning plate, sewage in the filter cartridges can be continuously transported through a water conveying mechanism, the filter cartridges can be driven to rotate under the cooperation of bearings, the filter cartridges can filter water, the filtered water falls back into the storage pond, the nozzles below the water storage shell can periodically spray water to clean the filter cartridges, impurities cleaned can fall into a collecting filter shell, and the cleaning water can fall into the storage pond, the collecting filter shell can be conveniently cleaned under the cooperation of a sliding block, the automatic replacement of filtered clean water is realized, and the loss of water resources is reduced.

This application discloses an intelligent reflective surface and a covert communication system, belonging to the field of wireless communication technology. The intelligent reflective surface includes multiple intelligent reflective surface units arranged in an array; each intelligent reflective surface unit includes: a first substrate, a second substrate, and a third substrate; a metal patch and a varactor diode, located on the side of the third substrate opposite to the second substrate; the metal patch includes a first patch and a second patch, and the varactor diode is located between the first patch and the second patch, with its negative and positive terminals electrically connected to the first patch and the second patch, respectively; a metal ground plane, located between the first substrate and the second substrate; a first bias line and a second bias line, located on the side of the first substrate opposite to the second substrate; the first bias line is electrically connected to the metal ground plane and the first patch, respectively, and the second bias line is electrically connected to the second patch. This application can achieve precise control of electromagnetic waves, reduce electromagnetic energy loss, improve energy transmission efficiency, suppress electromagnetic wave leakage, and improve communication covertness.

The utility model relates to the technical field of engine oil pan, especially a leakage-proof structure of in-line piston engine, an engine and an aircraft, including setting in the oil pan of engine crankcase body subassembly lower part, the oil pan forms a basin -like structure of one inner bottom surface basically level, the inner bottom surface of oil pan is concave downward and forms the oil storage groove that the structure is further outward protruding relative to the outer bottom surface of oil pan, the outer bottom surface of oil pan and the outside wall between oil storage groove smooth transition, the sealing edge contact surface of oil pan and engine crankcase body subassembly connection is wide side design, and is installed on the sealing edge contact surface with wide -side sealing pad, and the width of wide -side sealing pad is greater than the width of sealing edge contact surface, the utility model simplifies the structure, makes can adapt to the large inclination angle of aircraft ±45 DEG movement, greatly reduces the oil leakage risk simultaneously.

This utility model discloses a liquid crystal panel moving testing fixture, belonging to the field of liquid crystal panel testing technology. The fixture includes a mounting platform, a guide rail fixed to the mounting platform, a probe holder slidably mounted on the guide rail, a removable elastic probe inserted into the probe holder, a clamping block that elastically presses a flexible circuit board against the rear end of the probe, and a mounting platform for supporting and fixing the liquid crystal panel. The front end of the probe is pressed against the detection point of the liquid crystal panel, and the other end of the flexible circuit board is connected to an external testing circuit via a piano cover, forming a quickly replaceable testing path. This utility model utilizes the cooperation between the elastic probe and the clamping block to achieve a highly reliable, low-contact-resistance electrical connection; the probe holder as a whole can move along the guide rail to adapt to different testing positions; the pluggable probe structure facilitates maintenance, significantly improving testing efficiency and reducing testing costs.

This utility model discloses a magnetic drive motor and an air supply device, including a motor body, an inner rotor, an outer rotor, and a magnetic adjustment ring. The motor body includes a housing and a motor shaft, with the motor shaft extending out of the housing. The inner and outer rotors are coaxially arranged. The inner rotor is provided with at least one first magnetic element, and the outer rotor is provided with at least one second magnetic element. One of the inner and outer rotors is fixed relative to the motor shaft. When the motor shaft rotates, the other of the inner and outer rotors can rotate together through the force between the first and second magnetic elements. The magnetic adjustment ring includes a mounting bracket and multiple magnetic plates. The mounting bracket is made of non-magnetic material and includes a fixing part and a mounting part. The fixing part is connected to the housing, and the mounting part is located between the inner and outer rotors and surrounds the inner rotor. The multiple magnetic plates are mounted on the mounting part and arranged at intervals along the circumference of the mounting part. This application can improve the stability of the magnetic drive motor operation.

The utility model relates to wafer line sugar material processing technical field, and disclose a kind of wafer line sugar material stirring anti-caking device, including stirring drum, the feeding port is established in the one side of stirring drum top, the discharge port is established in the one side of stirring drum bottom.The utility model is by setting integrated anti-caking assembly and stirring assembly, and utilize the unique transmission design to make it form reverse rotation, realize the efficient collaborative anti-caking and mixing function, specifically, driving motor is engaged first bevel gear and second bevel gear by driving bevel gear simultaneously, drive wall scraping plate frame and central stirring rod are made opposite direction rotation, wall scraping plate responsible for scraping the material adhered to cylinder wall is fixed on right-angle frame, and its inboard shear fence and high-speed reverse stirring rod on sawtooth dispersion disc cooperate with each other, form extremely high relative speed and shear force between the two, can tear, break any sugar material caking instantly.

The utility model discloses a kind of explosion-proof heaters of uniform heating, including junction box, heating pipe and heating cylinder, the upper side of the outer wall of heating cylinder is respectively provided with water inlet pipe and water outlet pipe, the inside of heating cylinder is horizontally provided with shunt plate below water inlet pipe, shunt plate is provided with multiple shunt holes, shunt plate below is provided with drainage plate, the inside of shunt plate and drainage plate is provided with uniform flow plate in the inside of heating cylinder, and shunt plate is provided with multiple uniform flow holes.The shunt plate provided by the utility model passes through evenly distributed shunt hole, and the medium flowing is initially evenly divided to different areas of the front end of heating cylinder, to avoid that local flow rate difference is too large;Drainage plate further guides medium flow, promotes mixing and reduces stagnation area;After shunting and drainage, the medium finally passes through uniform flow plate to the medium final homogenization, eliminate local flow rate difference, so that the medium enters heating area with more stable state, to effectively realize the uniform, efficient heating of medium.

The utility model discloses a kind of hydrogen-cooled generator set hydrogen deoxidation drying devices, belong to drying device technical field, including mounting bracket, drying tower is installed on the mounting bracket, annular cavity is opened in the tower wall inside of drying tower;Cooling mechanism, the cooling mechanism is communicated with annular cavity;Drying mechanism, the drying mechanism includes drying module, the drying module includes multiple drying frame sealingly slidably connected in drying tower inside, drying block is installed in the drying frame inside.The utility model is by being arranged drying mechanism, drying module is split into multiple drying frame, which is sequentially clamped along vertical direction, only need to reserve one to two drying frame height and operating clearance in bottom, tower body barycenter is more close to ground, reduce support cost, avoid the risk of shaking brought by high suspension simultaneously;By receiving frame and telescopic platform, drying block can be replaced by single person, and high platform is not needed to be built, shorten single maintenance time.

The invention relates to the field of material surface treatment and machining, in particular to a method and device for directly preparing a copper alloy coating on the surface of a titanium alloy sealing rod. The process comprises the steps that firstly, cleaning and metal powder drying treatment are conducted on a sealing rod base material, and the base material is clamped on a rotary bearing mechanism in an adjusting box body; sealing the adjusting box body and filling inert gas to replace air until the oxygen content reaches the standard; the laser cladding mechanism is controlled to conduct scanning preheating on the surface of the base material in a non-powder-feeding state; then a powder feeding function is started, spiral high-speed laser cladding is carried out in cooperation with rotation of the base material and axial feeding of the cladding assembly, and closed-loop adjustment of the protective gas flow is carried out in the cladding process; and after cladding is completed, the base material is transferred into the heating furnace body in the box body to be subjected to post-treatment slow cooling, laser scanning preheating and in-furnace slow cooling are combined, atmosphere closed-loop control in a closed environment is matched, and the effect of restraining cracking and oxidation of a titanium alloy cladding layer is achieved.

The invention discloses a vibration monitoring system and method for the cutting state of a casing pipe under a mud line, and the system comprises a vibration sensor which is disposed at the top end of the casing pipe, is tightly attached to the outer wall of the casing pipe, and is used for obtaining a vibration signal of the casing pipe; the vibration monitoring unit is used for determining time domain data and frequency domain data corresponding to each signal extraction time period based on the vibration signals; the vibration signal evaluation unit is used for determining the cutting state of each signal extraction time period based on the time domain data, the frequency domain data and a preset vibration signal library; and the upper computer is used for displaying the vibration signal images of all the vibration sensors and the current cutting state of the sleeve in real time. The current cutting state of the sleeve can be judged without trial lifting, and the current cutting position is fed back in real time; the vibration sensor is arranged near the top end of the casing pipe and above the sea level, installation and measurement are more convenient, and adjustment can be conducted at any time according to wellhead conditions. The cutting efficiency of the multi-layer casing pipe is improved, the cutting time is shortened, and the cost is reduced.

A discrete manufacturing pipeline quality prediction method based on mechanism and data joint driving belongs to the field of intelligent manufacturing and industrial artificial intelligence, and the method comprises the following steps: first, data acquisition and preprocessing under the industrial scene of the discrete manufacturing pipeline; second, state space deduction and single variable nonlinear analysis of the sparse time sequence characteristics of the discrete manufacturing pipeline; third, mechanism joint training and real-time closed-loop intervention of the discrete manufacturing pipeline quality prediction model. The present application significantly improves the physical consistency of the discrete manufacturing pipeline quality prediction, realizes continuous inference of the hidden state under irregular sampling gaps, and enhances the safety decision-making ability and engineering application value of the automatic control of the discrete manufacturing pipeline.

Embodiments of this disclosure relate to multilayer power topologies and inductor devices. According to one configuration, an inductor device includes a core and one or more conductive paths. The core is magnetically conductive and surrounds (encapsulates) the one or more conductive paths. Each conductive path extends from a first end of the inductor device through the core of the inductor device to a second end of the inductor device. The magnetically conductive core is operable to limit (guide, carry, deliver, position, etc.) a corresponding magnetic flux generated from a current flowing through the corresponding conductive path. The core stores the magnetic flux energy (i.e., the first magnetic flux) generated by the current flowing through the first conductive path. One configuration herein includes a power converter assembly comprising a component stack including the inductor device as described above, a first power interface, a second power interface, and one or more switches.

The invention belongs to the technical field of aluminum melt refining, and particularly relates to an aluminum melt refining modification treatment device which comprises a degassing box, the degassing box comprises a box body, a liquid inlet pipe and a liquid outlet pipe, a partition plate is rotationally connected into the box body, and the partition plate divides the box body into two cavities used for controlling the flowing path of molten aluminum; the inner cavity of the box body is dynamically divided into two independent cavities through the partition plate capable of rotating in the box body, and the generator in any cavity is isolated and overhauled by combining valve control of the liquid inlet pipe and the liquid outlet pipe; when the generator in any cavity needs to be overhauled, molten aluminum in the cavity where the faulted generator is located can be emptied, and the other cavity continues to conduct refining operation; the whole-line shutdown maintenance is changed into local and online maintenance, the shutdown time and energy waste caused by maintenance are reduced, oxidation and residual loss of molten aluminum are remarkably reduced, and the equipment utilization rate and the production economy are improved.

The utility model discloses a kind of elbow production mould of magnetic connection and elbow with inner liner, belong to pipeline production technical field, mould includes mould shell, first mould cover and second mould cover, mould cover is placed in pipe body, first mould cover and second mould cover are fixed at the both ends of pipe body.Mould shell includes first module, second module, third module, fourth module and fifth module, first module and second module are respectively located at the both ends of pipe body, first module extends pipe body, second module and second mould cover sealing connection, third module, fourth module and fifth module are located at the intermediate position of pipe body, fifth module is between third module and fourth module, third module, fourth module and fifth module are magnetically attracted and connected, third module, fourth module and fifth module are magnetically attracted and connected with first module and second module.The utility model provides a kind of elbow production mould of magnetic connection, dismounting is convenient, the manufacturing process of mould is simple, and moulding is more accurate.

This utility model discloses a material feeding device for the modification of nano-calcium carbonate, including a storage tank. A cover plate is fixedly installed on the upper surface of the storage tank by multiple first bolts. A sealing gasket is fixedly installed on the bottom wall of the cover plate. A rotating shaft is rotatably installed on the bottom wall of the cover plate. A motor connected to the rotating shaft is fixedly installed on the upper surface of the cover plate. Multiple stirring blades are fixedly installed on the outer wall of the rotating shaft by a mounting sleeve. Each stirring blade is inclined. By setting up components such as a rotating shaft, stirring blades, connecting rods, and scrapers, this utility model allows the stirring blades to rotate when the rotating shaft drives them to rotate. The adjacent stirring blades with opposite inclination directions can form a bidirectional shearing force on the nano-calcium carbonate, effectively breaking up agglomerates and avoiding conveying blockages caused by agglomeration, thus improving the continuity of feeding. At the same time, the scraper rotates with the rotating shaft against the inner wall of the storage tank, which can promptly scrape off the material adhering to the wall, reducing material loss and cleaning difficulty.