627results about How to "Stable state" patented technology

The invention discloses a method for issuing digital collections and cancelling associated rights after verification. The method comprises the steps of binding the digital collections and rights through a digital right smart contract and confirming the right after a user purchases the digital collections. The method comprises the following steps: initializing metadata of a digital collection, determining basic information and attributes of the metadata, and endowing the metadata with a unique digital identity; creating a digital right intelligent contract, and binding the ownership and the real right of the digital collection with the digital collection; performing compliance and security auditing; deploying the digital collections and real rights and interests to a block chain network; the method comprises the following steps: the digital right platform firstly confirms the right of the behavior of purchasing the digital collection by the user; the digital right and interest platform puts rights and interests, maps the rights and interests obtained by the user through a digital right and interest smart contract and records the rights and interests on a block chain; after the user carries out rights and interests, the digital rights and interests platform cancels the rights and interests after verification; and after verification is completed, the right state is updated in real time, and meanwhile, an interface is called to synchronously update to the block chain network.

The invention discloses a bearing vibration detector pressing device and method, and relates to the technical field of bearing detection.The bearing vibration detector pressing device comprises a machining table, a lifting table is fixedly installed at the top of the machining table, and a first motor is fixedly installed on the surface of the machining table; a second motor is fixedly installed at the top of the machining table, and the clamping device comprises a sliding plate, a first telescopic elastic rod, a clamping jaw, a gear, a base, a tooth block, a lantern ring, a rotating shaft, a fixing rod, a first connecting block, a first connecting rod, a linkage rod, a second connecting rod and a second connecting block. It is ensured that the bearing is kept stable in the detection process, interference of vibration signals is reduced, and looseness during vibration detection is effectively prevented.

The invention discloses a gravel hardcore paving and compacting device for an inclined abrupt slope, relates to the field of cushion paving, and solves the problems that an existing gravel hardcore paving and compacting device for the inclined abrupt slope is low in automation degree and relatively poor in paving and compacting efficiency when in use, and the gravel hardcore paving and compacting device comprises a machine body, a paving mechanism, a cushion mechanism, a compacting mechanism and a grid belt, a plurality of sets of connecting nets are evenly arranged on the grid belt, the laying mechanism comprises a guiding piece, a conveying groove is formed in the machine body, the cushion layer mechanism comprises an input pipe, a storage cavity is formed in the machine body, and the compacting mechanism comprises a compacting plate. The gravel is conveyed into the storage cavity through the input pipe, then the gravel in the storage cavity is laid into the laid grid belt, and when the laying mechanism runs, the compaction plate is linked to ascend and descend in the device groove in a reciprocating mode, so that the gravel conveyed into the grid belt is pressed.

The invention relates to a particle detection device and method based on a planar optical waveguide microscope, and the device comprises a light source modulator which emits a visible light laser beam and a short wave infrared laser beam and reflects a coaxial combined dual-wavelength laser beam; the planar optical waveguide objective table comprises a parabolic reflector and a planar optical waveguide sheet which are arranged on the planar optical waveguide objective table, and particle samples to be detected are dispersedly placed on the planar optical waveguide sheet; the microscope objective is used for respectively collecting dark field scattered field signals of the visible light laser beam and the short wave infrared laser beam; and the beam splitting acquisition system is used for performing acquisition imaging and statistical analysis on dark field scattered field signals. Compared with the prior art, the invention has the advantages of stable sampling test environment, single particle analysis capability, nanoscale measurement resolution and the like.

The present invention discloses a polyurea-ceramic composite coating for the leading edge of a wind turbine blade and a preparation method thereof. The coating comprises aspartic acid ester polyurea and ceramics. The ceramics have good strength and hardness, and can improve the hardness and toughness of the coating as a whole, and improve the overall anti-rainwater erosion performance of the coating. Specifically, the polyaspartic acid ester polyurea is made of polyetheramine, diisocyanate, polyaspartic acid ester resin and isocyanate as raw materials, and the polyetheramine is a hydrophilic monomer, so that the system has good hydrophilicity, which is conducive to forming a water film on the leading edge surface of the wind turbine blade, and effectively buffering the impact of raindrops on the leading edge of the wind turbine blade.

The invention relates to the technical field of brazing furnaces, and discloses an energy-saving vacuum brazing furnace which comprises an outer cylinder, an inner cylinder arranged in the outer cylinder, sealing covers arranged at openings in the two ends of the outer cylinder, heating equipment arranged in the inner cylinder and a supporting table and further comprises a placing assembly, and the placing assembly specifically comprises a pushing sliding groove formed in the top of the supporting table; the pushing sliding block is arranged in the pushing sliding groove, the rotating inserting groove and the stand column are formed in the top of the pushing sliding block, and the containing frame is arranged on the top of the stand column. According to the energy-saving type vacuum brazing furnace, by arranging the containing assembly and the stand columns, the containing frame is lifted, the distances between the containing frame and the heating equipment are the same in the center and the periphery of the inner barrel, and therefore parts in the containing frame are evenly heated, and the situation that the brazing degrees of the different parts are inconsistent due to uneven heating is avoided; and deviation and deformation caused by uneven heating of different positions of the part are avoided, so that the brazing effect of connection is guaranteed, and the product quality is improved.

The packaging equipment for inductor production comprises a bottom table and a conveying belt, a packaging table is installed at the top of the bottom table and penetrates through the conveying belt, a sealing cover packing box is installed at the top of the packaging table, a sealing cover is pushed in the sealing cover packing box, openings are formed in the two sides of the lower end of the sealing cover packing box, and the sealing cover is arranged in the openings. A U-shaped plate is in butt joint with an opening in one side of the packaging table, a packaging sealing cover assembly is arranged on the bottom table and comprises a motor fixed to the bottom of the bottom table, an electric push rod is in butt joint with the top of the motor, and a suction cup is installed at the bottom of a transverse plate fixed to the top of the electric push rod. Through the design of the packaging cover sealing assembly, automatic cover sealing packaging and automatic feeding work are achieved, manual participation is not needed in the whole process, the efficiency is higher, the stability is good, the precision is high, and the working efficiency is improved.

The present invention provides a magnetic speed change device and a wind power generation system, wherein the magnetic speed change device comprises a first magnetic wheel and a second magnetic wheel arranged side by side, the radius of the first magnetic wheel is larger than the radius of the second magnetic wheel, the outer circumferential surface of the first magnetic wheel is covered with a plurality of magnets of the same polarity along the circumferential direction, the outer circumferential surface of the second magnetic wheel is covered with a plurality of magnets of the same polarity as the magnets on the outer circumferential surface of the first magnetic wheel along the circumferential direction, all magnets of the second magnetic wheel have the same size along the outer circumferential direction of the second magnetic wheel, and the size of a single magnet of the first magnetic wheel along the outer circumferential direction of the first magnetic wheel is the same as the size of a single magnet of the second magnetic wheel along the outer circumferential direction of the second magnetic wheel, the number of magnets of the first magnetic wheel is larger than the number of magnets of the second magnetic wheel, and the distance between the two magnets closest to each other on the two magnetic wheels is within the range of the magnetic polarity force of the two magnets. The magnetic speed change device and the wind power generation system provided by the present invention can overcome the shortcomings of the existing speed change gears being easy to wear and having a high failure rate.

The invention provides positive electrode slurry and a preparation method thereof, a positive plate, a battery and electric equipment. The positive electrode slurry comprises a positive electrode active material, a first conductive agent, a second conductive agent and a binder, the positive electrode active material, the first conductive agent and the second conductive agent meet the relational expression: 3.7 < = aX + bY + cZ < = 4.2; wherein X is the mass ratio of the positive electrode active material in the positive electrode slurry, a is the specific surface area of the positive electrode active material, Y is the mass ratio of the first conductive agent in the positive electrode slurry, b is the specific surface area of the first conductive agent, Z is the mass ratio of the second conductive agent in the positive electrode slurry, and c is the specific surface area of the second conductive agent. According to the invention, the positive electrode slurry is subjected to formula model design, so that the produced positive electrode slurry is stable, the pole piece processing performance is excellent, and the produced sodium ion battery is stable in long-term circulation.

The invention provides a preparation method of a two-dimensional nanobelt. The two-dimensional manganese risedronate nanobelt (RMn-NBs) is prepared from Mn < 2 + > and risedronate sodium by using a coordination self-assembly technology. The raw materials are cheap and easy to obtain, and the preparation process is simple, easy to operate and good in controllability. The two-dimensional risedronate manganese nanobelt can inhibit a hypoxia-inducible factor / vascular endothelial growth factor (HIF-1alpha / VEGF) through risedronate sodium so as to enhance the radiotherapy effect; meanwhile, Fenton-like reaction of Mn < 2 + > is utilized to amplify oxidative stress mediated by radiotherapy, a GMP-AMP synthetase stimulating factor (cGAS-STING) pathway of an interferon gene ring is synchronously activated, secretion of I-type interferon is promoted, ICD (immunogen cell death) is effectively induced, and the immunogen cell death rate is increased. And the effects of CD8 + T cell dependent systemic anti-tumor immunity and checkpoint blocking immunotherapy on primary and metastatic tumors are greatly enhanced. The RMn-NBs is used as a novel nanoscale in-situ radiotherapy vaccine, and has good biocompatibility and treatment effect.

The invention discloses a liquid crystal cream with an ice cream appearance. The liquid crystal cream is prepared from the following raw materials in percentage by weight: 5-10% of a humectant, 0.1-1% of a preservative, 0.1-3% of an emulsifier, 15-25% of an emollient, 0.3-1% of a thickener, 1-5% of a skin conditioner and the balance of water. According to the invention, the water-soluble polymer combination of the sodium carbomer and the sodium polyacrylate grafted starch is added, so that the liquid crystal cream with the appearance and texture of ice cream can be formed, the liquid crystal cream has the skin feeling experience of being light, not greasy and ice-cold water, the heavy and depressed feeling of the traditional cream is improved, and the sensory experience is better. According to the invention, the stability and transmission efficiency of active ingredients are enhanced by means of microparticle gel formed by a lamellar liquid crystal technology and a polymer, meanwhile, a lipoid structure between cuticle cells is simulated, the skin barrier function is enhanced, and the moisturizing, soothing, tightening and anti-wrinkle effects of a cream product on the skin are effectively improved.

The invention discloses a double-end display screen control method, which comprises the following steps of: in response to an operation signal for a soft button received by a first display screen or a second display screen, generating a control instruction based on the operation signal and sending the control instruction to a controller; responding to the control instruction received by the controller, and sending the control instruction to a corresponding subsystem; in response to the control instruction received by the subsystem, obtaining a running state and sending a running state feedback signal to the controller based on the running state; and in response to the operation state feedback signal received by the controller, sending the operation state feedback signal to the first display screen and the second display screen so as to update the state of the soft button based on the operation state feedback signal. The invention further discloses a rail transit vehicle, computer equipment and a readable storage medium. According to the scheme, the states of the soft buttons in the display screens at the two ends can be kept consistent all the time.

The utility model relates to a lead-acid battery pole plate lug trimming device which comprises a conveying belt, a discharging assembly is arranged above the input end of the conveying belt, a clamping assembly is arranged on the conveying belt, a trimming assembly is arranged at the output end of the conveying belt, the trimming assembly comprises a base, a pushing assembly and an unfolding assembly are arranged on the base, and the pushing assembly and the unfolding assembly are arranged on the conveying belt. A gear is arranged on the moving path of the clamping assembly, the clamping assembly clamps a pole plate when passing through the gear in the moving process, meanwhile, the pushing assembly pushes the pole plate to the position below the trimming assembly to cut a pole lug, and the unfolding assembly is used for releasing the clamping state of the clamping assembly and the cut pole plate. By arranging the clamping assembly and the unfolding assembly, automatic cutting of the pole plate and the pole lug is achieved, the cutting speed is increased, meanwhile, the problems caused by manual cutting are reduced, the cutting uniformity of the pole plate and the pole lug is improved, and damage of lead scraps and dust to workers is reduced.

The present invention relates to the technical field of brazing furnaces, and discloses an energy-saving vacuum brazing furnace, comprising an outer cylinder, an inner cylinder arranged inside the outer cylinder, a closing cover arranged at the openings at both ends of the outer cylinder, a heating device and a support table arranged inside the inner cylinder, and a placement component, wherein the placement component specifically comprises a push chute opened at the top of the support table, a push slider arranged inside the push chute, a rotating slot and a column arranged at the top of the push slider, and a placement rack arranged at the top of the column. The energy-saving vacuum brazing furnace, by arranging the placement component, the column lifts the placement rack so that it is located at the center of the inner cylinder, and the distance from the heating device is the same on all sides, so that the parts in the placement rack are evenly heated, avoiding different parts from having inconsistent brazing degrees due to uneven heating, and avoiding uneven heating at different positions of the parts and causing offset deformation, thereby ensuring the brazing effect of the connection and improving the quality of the product.

The utility model relates to the technical field of battery packs, and provides a complementary cooling device, a liquid cooling system, a battery pack and electric equipment.The complementary cooling device comprises a first liquid cooling plate and a second liquid cooling plate, the first liquid cooling plate and the second liquid cooling plate are arranged in parallel and form a containing space, and the containing space is used for containing a to-be-cooled object; the circulation direction of a cooling medium in the first liquid cooling plate is opposite to the circulation direction of a cooling medium in the second liquid cooling plate; in the flowing direction of the cooling medium, the flow speed of the cooling medium in the first liquid cooling plate and the second liquid cooling plate is gradually increased. According to the scheme, the staggered liquid inlet temperature and liquid outlet temperature can be formed at the two ends of the two side faces of the to-be-cooled object, the heat interaction capacity of the liquid outlet area can be improved, the cooling heat exchange capacity of the to-be-cooled object is improved, and the regional temperature difference is reduced.

The invention provides a heterogeneous multi-unmanned aerial vehicle data cooperation approximate dynamic programming optimal consistency method and device, and relates to the technical field of multi-agent control. The method comprises the steps of obtaining state data of a heterogeneous multi-unmanned aerial vehicle system, constructing a recognizer with a compensation signal, approaching dynamic model information of the heterogeneous multi-unmanned aerial vehicle system, constructing a compensator with a dynamic signal, and obtaining a weight updating rule of a neural network with compensator recognition; according to a weight updating rule, constructing a Hamilton function; according to a Hamilton function, constructing a cumulative square error with a cooperative signal; a gradient descent method is adopted to obtain a weight updating rule of the cumulative execution-cooperative evaluation neural network, and two adjacent iteration constant weights are calculated; judging whether a preset threshold condition is met or not according to an error of two adjacent iteration constant weights; and if yes, iteration is stopped, and an optimal consistent solution of the heterogeneous multi-unmanned aerial vehicle system is output. According to the invention, the algorithm expansibility can be improved and the algorithm complexity can be reduced.

The utility model relates to the technical field of bearing detection, and discloses a bearing wear resistance test board which comprises a workbench, a lifting assembly is arranged at the bottom of the workbench, a first motor is fixedly connected to the front side of the workbench, a worm is fixedly connected to the output end of the first motor, and a rotating shaft is fixedly connected to the interior of the workbench. A worm gear is rotatably connected to the periphery of the rotating shaft, the worm gear is meshed with the worm, a plurality of evenly-distributed sliding rods are slidably connected to the interior of the worm gear, and a sliding plate is fixedly connected to the ends, away from the worm gear, of the sliding rods. According to the utility model, the clamping plate can be driven to move through the first motor, the clamping plate can fix bearings with different sizes through movement, stable positions and states of the bearings in the test period are ensured, the workbench can be driven to ascend and descend through rotation of the rotating handle, and the bearings can be moved to the rotating shaft through ascending and descending of the workbench to be tested.

The invention provides a preparation method of a tellurium-selenium-cadmium alloy film, which comprises the following steps: A) mixing cadmium selenide powder and cadmium telluride powder, and performing compression molding to obtain a powder source; b) pre-oxidizing the powder source in an oxygen-containing atmosphere to obtain a pre-oxidized powder source; in the oxygen-containing atmosphere, the molar percentage of oxygen is 1-40%; and C) preparing the tellurium-selenium-cadmium alloy film from the pre-oxidized powder source through a near-space sublimation method. The preparation method solves the problem that the selenium content in the tellurium-selenium-cadmium film obtained by the preparation method of pre-oxidation is low in the past. Moreover, in the preparation process of the tellurium-selenium-cadmium alloy thin film, regulation and control of the selenium content are more accurate, controllability is higher, when the tellurium-selenium-cadmium alloy thin film is applied to large-scale production, quality stability of products is better, and the tellurium-selenium-cadmium alloy thin film is of great significance to large-scale industrial production.

The invention provides a preserving fluid for preserving host and gram-negative bacterium nucleic acid in an excrement sample, and particularly discloses an excrement preserving fluid capable of effectively splitting and releasing host intestinal cast-off cell DNA and gram-negative bacterium DNA and splitting gram-positive bacterium DNA less. Therefore, the Gram-negative pathogenic bacteria can be used for screening various Gram-negative pathogenic bacteria and can also be used for primary screening and general survey of diseases such as colorectal cancer of a host, and interference of nucleic acid of Gram-positive bacteria on detection is remarkably reduced.

The utility model discloses an intelligent AGV (automatic guided vehicle), which relates to the technical field of automatic guided vehicles and comprises a side box, a groove is formed in the top end of the side box, a clamping rod is arranged in the groove, a first turning plate is fixedly connected to the middle of the clamping rod, a bracket is fixedly connected to one side wall of the side box, a flat plate is arranged at the top of the bracket, and a pressing rod is fixedly connected to the middle of the bottom end of the flat plate. The pressing rod is movably sleeved with a spring, a button switch is arranged at the bottom of the pressing rod, contact blocks are fixedly connected to the two sides of the bottom end of the flat plate, driving wheels are installed on the two sides of the bottom end of the bracket, and a rotating rod is arranged on one side of the bracket. By arranging a series of structures, an operator is prompted to unload overloaded cargoes, the probability of overload operation of the trolley is reduced, the service life of the trolley is effectively prolonged, the probability that the cargoes on the trolley fall in the carrying process of the trolley is reduced, and the working efficiency of the trolley is improved. And goods on the trolley can be kept in a stable state in the carrying process of the trolley.

The invention discloses an experimental device and method for evaluating sand washing and drilling and grinding effects of a coiled tubing of a horizontal well, and the experimental device comprises a coiled tubing sand washing unit, a coiled tubing drilling and grinding unit, a well body structure simulation unit, a liquid circulation unit, a data measuring and processing unit and a high-temperature and high-pressure simulation unit, and is used for simulating working conditions of sand washing and well washing of a long horizontal section of petroleum. And carrying out a conventional sand washing fluid settled sand removal evaluation experiment. The device has the function of visually observing, recording and removing the sand setting effect of the horizontal well, and sand washing and drilling and grinding simulation experiments under the working conditions of comparing the well body structure, the construction displacement, the sand washing fluid type, the sand washing nozzle type, the existence or absence of an oil pipe centralizer, the sand washing mode, the grinding shoe type, the drilling and grinding working fluid displacement, the drilling and grinding working fluid additive and the like are carried out. And the influence of the working conditions on the sand washing and drilling and grinding effects of the coiled tubing is evaluated, and the optimal sand washing and drilling and grinding engineering combination of the coiled tubing is optimized. The device is designed according to on-site sand washing and well washing and bridge plug drilling and grinding working conditions, and is complete in structure and convenient to operate.

The invention discloses a power distribution network line state analysis method and system, and relates to the technical field of power distribution network analysis, and the method comprises the following steps: S1, calculating the distribution value of each region, S2, setting a power grid partitioning mode, S3, analyzing an intelligent partition, S4, adjusting the sensitivity, and S5, generating an optimal scheme. The appropriate target is selected by setting the seasonal factor and the daytime and night factor, due to the fact that different new energy sources have seasonal differences and are different in daytime and night, difference division and targeted control are necessary to be carried out on the new energy sources so as to adapt to different scenes, meanwhile, the power grid partitioning modes are set to be multiple, and the power grid partitioning efficiency is improved. According to the method, different control nodes can flexibly select a partition method according to needs, effective adjustment of regional power grid voltage is realized, safe use of a line is ensured, different strategy schemes are cyclically verified, an optimal strategy scheme is formed, the coordination capability for different types of distributed power supplies in power distribution network planning is improved, and stable line state is ensured.

The invention relates to the technical field of sewage multi-stage treatment, and discloses sewage treatment equipment and a sewage treatment system for esterification reaction, the sewage treatment equipment comprises a main body, the main body is internally provided with an adjusting tank, a flocculation tank and a sedimentation tank, the interior of the adjusting tank is fixedly connected with partition plates, and the partition plates divide the adjusting tank into a plurality of chambers. According to the invention, the regulating tank is divided into a plurality of chambers connected in series, and the charging barrels and stirrers matched with the chambers are arranged, so that decentralized gradual neutralization operation can be realized, compared with a manner of centrally putting medicaments for neutralization, the probability of generating medicament blocks is small, and the screen drum, the inclined paddle, the driving assembly and the transmission assembly are arranged, so that the efficiency of neutralization is improved. The device is simple in structure and convenient to operate, can collect agglomerates which are difficult to disperse, then grinds the agglomerates above the liquid level of the sewage and then disperses the agglomerates in the sewage again, so that the problem that a small amount of agglomerates are difficult to disperse is further solved, the neutralization effect is further improved, the sludge amount in the sewage is reduced, and the sludge treatment pressure of a subsequent sedimentation tank is reduced.

The utility model discloses a wind turbine generator blade repairing device which comprises a supporting frame, a fixing frame and a first threaded rod. Rollers are arranged at the bottom of the support frame; the fixing frame is arranged at the top of the supporting frame, and a clamping plate is slidably connected to the inner side of the fixing frame; the output end of the linear executing mechanism drives the supporting rod, the positioning block, the clamping plate and the flexible plate to move in the groove of the fixing frame, and after the flexible plate makes contact with the surface of the wind turbine generator blade, the clamping plate and the flexible plate can be used in cooperation to fix the wind turbine generator blade. When the blade of the wind turbine generator is repaired, the blade of the wind turbine generator can be better fixed; a third threaded rod is driven to rotate through a rotating disc, and due to the fact that an external thread on the surface of the third threaded rod is matched and screwed with an internal thread in the rotating disc, the third threaded rod can drive a positioning disc to move downwards, the positioning disc descends to be supported on the ground, and a supporting frame is kept in a stable state.

The invention relates to the technical field of automobile covering part machining, and discloses a stamping die for an engineering vehicle control cabin body covering part, which comprises a working frame, a fixed lower die block and a dynamic upper die block are arranged in the working frame, and a downward pressing sliding frame is arranged on one side, facing the upper die block and the lower die block, of the working frame. When a jacking block moves upwards, protruding parts on the two sides of an anti-blocking plate can be extruded towards the middle of the anti-blocking plate through two pushing blocks and a movable column, so that the protruding parts on the two sides of the anti-blocking plate are separated from the inner wall of an exhaust channel, and the anti-blocking plate is prevented from being blocked; in this way, extruded air in the stamping cavity at the bottom end of the stamping part can flow out through the air leakage holes in the exhaust channel, air pressure on the upper side and the lower side of the stamping part is the same when the stamping part is demoulded, the stamping part is prevented from being adhered to the inner wall of the stamping cavity during demoulding, and the stamping part is prevented from being damaged during demoulding.

According to the laser diode modulation driving circuit provided by the utility model, after a power supply is switched on, the laser diode LD can emit modulation laser with specified frequency. According to the scheme, only one laser diode is used for emitting modulated laser, matching of light path elements is not needed, and use is convenient. According to the technical scheme, the Q2, the Q3, the C1 and the C2 form positive feedback connection, so that the Q1 can maintain stable on and off states, and the switching time of the on and off states is extremely short; and because the R3, the C1, the R4 and the C2 form two charging circuits for timing, the Q1 can maintain the current on or off state for a time determined by the resistance values and the capacitance values of the R3, the C1, the R4 and the C2 and then switch to the other state. Therefore, after the power supply is switched on, the Q1 continuously performs switching between the on state and the off state, and the laser diode LD can emit the modulation laser with the specified frequency, so that the technical problems mentioned in the background technology are solved.

The present invention relates to the technical field of stone crushing equipment, and specifically discloses a stone crushing equipment with a separation function. The equipment comprises a frame, the frame is fixedly connected to a first fixed frame, the first fixed frame is fixedly connected to a first motor, the upper side of the frame is rotatably connected to a rotating shaft through a mounting frame, the output shaft of the first motor and the rotating shaft are driven by a pulley and a belt, the side of the frame close to the breaker is fixedly connected to a feeder frame, the side of the feeder frame away from the frame is fixedly connected to a first fixed shell, the first fixed shell is slidably connected to a rotating shell, a through hole is provided on the rotating shell, and a screen is provided in the through hole. The present invention screens out stones that meet the specifications through the cooperation of the rotating shell screen and the first fixed shell to prevent the stones from being over-crushed, and the stones will not be crushed again due to excessive impact force during screening, thereby ensuring the quality of the stone output.

The invention discloses a dielectric constant calibration substance mixed oil liquid and a preparation method thereof, and relates to the technical field of oil liquid dielectric constant calibration, and the dielectric constant calibration substance mixed oil liquid comprises a mixed liquid of a target oil product additive and lubricating oil; wherein the target oil product additive comprises at least one of the following components: PIBSA1000 polyisobutylene succinic anhydride, T-109 alkyl calcium salicylate, T-405 sulfurized olefin cottonseed oil, T-403 oleic acid glycol ester, T308 acidic phosphatide ester amine salt, span 80, chlorinated paraffin and triethanolamine. The lubricating oil comprises at least one of 25 # transformer oil, 68 # gear oil, 220 # gear oil and 320 # gear oil. The dielectric constant calibration substance provided by the invention is stable in mixed oil dielectric constant, the dielectric constant value is easy to regulate and control, and the oil dielectric constant monitoring requirement is met.

The present invention discloses an oil refining tank which is easy to observe, and relates to the technical field of bio-industry, comprising a refining tank, wherein a supporting leg is fixedly connected to the bottom of the refining tank, a fixing column is fixedly connected to the top of the refining tank, a motor is fixedly connected to the top of the fixing column, and a stirring visualization mechanism is arranged inside the refining tank; by arranging the stirring visualization mechanism, when a rotating shaft drives a connecting rod A and a connecting rod B to stir faster, the connecting rod B is thrown out farther, and then the slider is pushed to slide on the inner wall of a retaining ring farther, and the staff only needs to observe the distance that the slider is pushed out on the inner wall of the retaining ring during stirring to intuitively judge the stirring speed and situation of the connecting rod A and the connecting rod B on the liquid in the refining tank at this time.