3336results about How to "Increase contact area" patented technology

The invention relates to a combined truncated cone type gas-liquid redistributor. The combined truncated cone type gas-liquid redistributor comprises a conical wall and a connecting bottom plate. Theconnecting bottom plate is fixedly arranged at the bottom of the conical wall, and is provided with a plurality of strip-shaped folding plates; the strip-shaped folding plates are of inverted-V structures; a plurality of air holes are formed at equal intervals in both sides of each strip-shaped folding plate; a stop plate is fixedly arranged on the lateral side of the strip-shaped folding plate above each air hole, and an angle is formed between each stop plate and the lateral side of the corresponding strip-shaped folding plate; the angles between the stop plates and the lateral sides of thestrip-shaped folding plates are proportional to the distances from the stop plates to the center of the connecting bottom plate. The combined truncated cone type gas-liquid redistributor has the advantages that the strip-shaped folding plates and the stop plates are adopted to achieve a good distribution effect of washing liquid, and accordingly, the area and time of contact between gases and liquid can be increased and prolonged; the included angles between the stop plates and the lateral sides of the strip-shaped folding plates are proportional to the distances from the stop plates to the center of the connecting bottom plate, so that the differences among the flowing speeds of gases from each air hole are small, the gas distribution effect is good, poor gas-liquid distribution in a packing tower is reduced, and the gas-liquid mass transfer efficiency is improved.

The present application relates to the technical field of lead-acid battery electrode, aiming at the problem of thick lead paste on the existing lead-acid battery plate, large resistance during charging and poor rate discharge performance of the battery, a preparation method of lead-acid battery membrane electrode is disclosed, comprising the following steps: adding a binder to the prepared lead paste, rolling the lead paste containing the binder on the lead skin to form a lead paste film layer, immersing the lead skin and the attached lead paste film layer in a sulfuric acid solution, and solidifying and drying after taking out; the binder is polytetrafluoroethylene emulsion or a binder containing polytetrafluoroethylene emulsion. Unlike the high molecular film attached to the surface of the lead-acid battery plate in the prior art, the present application obtains a thin film electrode with thin thickness, uniform active material dispersion, large active material and current collector contact area and good conductivity, and has the advantages of large rate charge and discharge cycle.

The utility model relates to the technical field of oil casing pipe mark spraying, in particular to an automatic screwing device for a thread protector, which comprises a casing pipe base, a driving assembly and a fixing assembly, and the casing pipe base is used for placing a casing pipe in a horizontal state; the driving assembly is connected with the sleeve base so as to drive the sleeve base to rotate; the fixing assembly is arranged on one axial side of the sleeve base and comprises a fixing support, a main rod, a first clamping part and a second clamping part, the first clamping part and the second clamping part are connected to the main rod in parallel, an outer arc face is arranged on the first clamping part, an inner arc face matched with the outer arc face is arranged on the second clamping part, and the fixing support is arranged on the main rod. The outer cambered surface and the inner cambered surface are oppositely arranged, a clamping space is formed between the outer cambered surface and the inner cambered surface, and the clamping space is used for fixing the thread protector; the fixing assembly is arranged to fix the thread protector, the sleeve is automatically screwed with the thread protector when rotating, and the installation efficiency of the thread protector is improved.

The application relates to a swing granulator seven-star roller and a mounting structure thereof. The swing granulator seven-star roller and the mounting structure thereof comprise a seven-star roller body, the seven-star roller body is in a cylindrical working surface structure, seven convex granulation corners are uniformly arranged on the outer peripheral wall of the seven-star roller body, the working surfaces of the granulation corners are all arranged in arc structures, and the arc structures are matched with a screen of the swing granulator; a roller mounting mechanism, which comprises a rack, a bearing seat, a bearing arranged in the bearing seat and a rotating shaft penetrating through the bearing, the rotating shaft is connected with an end shaft of the seven-star roller body, the bearing seat is mounted on the rack, a material seepage discharge port is formed in the rack at the bottom of the bearing seat; and a sealing assembly, which is sleeved on the rotating shaft and located at the opening end of the bearing seat. The material can be more fully and uniformly extruded, the hardness of wet particles is effectively improved, the generation of fine powder after drying is reduced, the quality of granular products is improved, the dead angle residual of the material in the equipment is reduced, and the material waste is reduced.

The utility model relates to a good anti -slip building structure of protection effect belongs to building structure technical field, including concrete slab, the top of concrete slab is fixed with the plastic sheet, the top of plastic sheet is fixed with the anti -slip block, the inside fixed of concrete slab has the telescopic link that penetrates to the top of plastic sheet and the number is two, the top rotatory connection of telescopic link has the fixed block, the inside fixed of concrete slab has the fixed spring with telescopic link. The good anti -slip building structure of protection effect, after installing component is inserted into the inside of land through drill bit, through the rotation of the moving rod inside installing component, can make the horizontal direction of auxiliary support of support component to installing component, thereby increases the contact area with soil, makes the concrete slab whole more stable, improves the anti -slip effect, and the overall structure is simple, effectively improves the overall protection and practicality, thereby makes whole more practical.

The application relates to the technical field of flue gas waste heat recovery, and discloses a rotary kiln flue gas low-temperature waste heat recovery device, which comprises a primary recovery chamber, a secondary recovery chamber and a water storage tank, a flue gas inlet pipe is fixedly installed at the left end of the outer wall of the primary recovery chamber, a flue gas connecting pipe one is fixedly installed at the right side of the upper end of the outer wall of the primary recovery chamber, the rear end of the outer wall of the flue gas connecting pipe one is fixedly connected with the front end of the outer wall of the secondary recovery chamber, the temperature of the heat-conducting aluminum sheet one directly contacting the outer wall of the S-shaped flue pipe is increased, the hot end of the thermoelectric sheet can have a constant high temperature, the heat-conducting aluminum sheet two contacting the inner wall of the water pipe one can take away the heat at the heat-conducting aluminum sheet two under the action of the water flowing in the water pipe one, and the cold end is formed, so that a temperature difference is formed between the hot end and the cold end of the thermoelectric sheet, the thermoelectric sheet can generate electricity by utilizing the temperature difference between the high and low temperatures, and the heat energy in the flue gas can be converted into electric energy.

The wire harness comprises a main plug, a plurality of connecting holes and a plurality of conductive sleeves are arranged on the plug, each conductive sleeve comprises a vertical connecting part and a plurality of elastic sheets, the elastic sheets are annularly arranged outside the vertical connecting part at intervals and connected with the vertical connecting part, and the sides, close to orifices of the connecting holes, of the elastic sheets incline outwards. The conductive sleeve is inserted into the connecting hole, and the elastic sheet deforms under the action of the outer wall of the connecting hole and abuts against the outer wall of the wire harness core. When the conductive sleeve and the wire harness are synchronously inserted into the connecting hole, the elastic sheets deform towards the inner side of the connecting hole under the action of the hole wall of the connecting hole and are pressed on the wire harness core, so that the wire harness is locked by using the plurality of elastic sheets, the mechanical locking capability of the conductive sleeve on the wire harness is optimized, and the connection reliability is improved; and the plurality of elastic sheets enclose to form the side wall matched with the hole wall of the connecting hole under the action of the connecting hole, so that the contact area between the elastic sheets and the wire core is increased, and the electrical performance is improved.

The utility model relates to fan transmission system technical field, and disclose a kind of assembly impeller, including impeller and main shaft, the detachable connection between the impeller and main shaft, at least two symmetrical distribution's protruding tooth is processed in the main shaft end face;The recess matched with the protruding tooth is opened in the impeller body end face, and torque is transferred by the side surface contact of the protruding tooth and recess;The utility model is matched by protruding tooth and recess, and contact area is big, can effectively disperse torque, reduce local stress concentration;Symmetrical distribution's protruding tooth makes stress more balanced, avoids the local failure caused by structural deviation.

This utility model discloses a centralized transfer bracket for anti-displacement cast steel parts after production. It includes a base plate, with lifting plates fixedly connected to both sides of the base plate surface. A buffer assembly is installed on one side of the base plate's interior, and a support assembly is installed on the other side. The buffer assembly prevents the box containing the cast steel parts from bumping or knocking, while the support assembly supports the device. Through the design of the base plate, lifting plates, buffer assembly, and support assembly, when the surface of the support assembly is subjected to pressure during use, the support structure within the support assembly automatically opens to support the device. When not in use, it automatically retracts. Simultaneously, the buffer assembly also cushions the box containing the cast steel parts, preventing the box from slipping and damaging the cast steel parts during transport. This achieves the effect of reducing the space occupied by the bracket and preventing damage to the cast steel parts.

This utility model relates to the field of chemical cooling technology, and provides a production device for cooling chemical mixtures, including a reaction vessel. A cooling chamber is provided on the outside of the reaction vessel, and a cooling pipe is provided inside the cooling chamber. The cooling pipe is wound around the outer wall of the reaction vessel. A stirring mechanism is provided inside the reaction vessel. Heat dissipation mechanisms are provided on both sides of the cooling chamber on the outside of the reaction vessel. By providing a stirring mechanism and a heat dissipation mechanism, this utility model can provide forced air cooling for the cooling pipe and cooling medium, accelerating the diffusion of heat to the environment. While improving the cooling effect, only one drive motor is needed to drive the stirring blades and the cooling fan at the same time, reducing the number of power devices, simplifying the equipment structure, and reducing energy consumption and maintenance costs.

This utility model provides a corneal foreign body removal device, relating to the field of ophthalmic medical devices. It includes a handle, a working part, a connecting part, and a neck. The working part is fitted onto the middle of the outer wall of the handle, and the connecting part is located at one end of the handle. The neck is detachably connected to the handle via the connecting part. The device also includes a head, the tip of which is tilted at a certain angle to one side, forming a crescent-shaped curved surface. This crescent-shaped curved surface extends laterally along the inclined side to form a single-sided cutting edge. Through the cooperation of these structures, compared with existing technologies, it has the following advantages: First, the bidirectional inclined cutting edge structure significantly reduces the risk of corneal stroma tearing. The blunted rounded corners increase the contact area during device retraction, effectively avoiding secondary trauma caused by micro-movements of the eyeball and reducing the risk of corneal perforation. Second, different sizes of cutting edges can be replaced through the connecting part to adapt to differences in foreign body size, reducing the probability of misoperation due to repeated device adjustments.

The utility model discloses a kind of corrosion-resistant long-life stainless steel pipes applied to boiler, it is related to stainless steel pipe technical field, including first steel pipe, one end of the first steel pipe is provided with second steel pipe, the side of the first steel pipe is provided with fixed component, the inside of the first steel pipe is provided with corrosion-resistant component, the fixed component includes fixed ring, and fixed ring is fixedly connected in the outer wall of first steel pipe, the outer wall of the fixed ring is provided with outer thread, the outer wall thread of the outer thread is connected with mounting ring. The corrosion-resistant long-life stainless steel pipe applied to boiler, first by rotating first steel pipe drive fixed ring and mounting ring thread connection, realize preliminary fixation, subsequently hoop is pasted in the outer wall of both, screw nut extrusion hoop, further strengthen connection, the design of this double fixation, effectively improve the stability of first steel pipe and second steel pipe connection, reduce the risk of loosening, falling, guarantee use safety and reliable.

The utility model relates to a kind of bearing end cover face processing milling device, comprising: main body;Station switching component, it is set in the top of main body for the bearing end cover is fixed and make bearing end cover enter to milling station;Milling component, it is set in the top of main body and is set in the back of station switching component for the face of bearing end cover is milled;The station switching component includes the turntable that can be rotatably set on main body, and several fixed clamping components for the bearing end cover is fixed and is uniformly set on the turntable, the fixed clamping component includes the support ring that can be fixed on the turntable and is supported with to the bearing end cover is supported.The utility model is supported by setting support ring to bearing end cover, by the inner wall contact of clamping block and bearing end cover is fixed, so that bearing end cover clamping is stable.

The utility model belongs to cigarette production equipment technical field discloses a kind of tipping paper curling device.The tipping paper curling device includes rack, guide plate component, paper scraping component and adjusting roller component, guide plate component is fixedly installed on rack, for guiding tipping paper;Paper scraping component is set in the downstream of guide plate component, and paper scraping component includes cutter shaft and doctor blade, cutter shaft is fixedly arranged on rack, and doctor blade is arranged along the axial direction of cutter shaft, and doctor blade is used to scrape tipping paper;Adjusting roller component includes fastening ring, connecting shaft and first paper guide roller, fastening ring is rotatably arranged on cutter shaft and is fixedly connected with connecting shaft, first paper guide roller is sleeved on connecting shaft and is rotatably connected with connecting shaft, and first paper guide roller is located between guide plate component and paper scraping component, and it can make the included angle between tipping paper and cutter shaft be acute, to solve the roughness of tipping paper surface processing effect, enhance the bonding firmness of tipping paper and glue.

This utility model relates to the field of building engineering technology and discloses a wall drilling device for building engineering. It includes an electric hammer body, a drill bit for drilling is provided at the left end of the electric hammer body, and a sleeve is provided on the outside of the right end of the electric hammer body. Connecting rods are fixedly connected to both the front and rear ends of the sleeve. A U-shaped plate is fixedly connected to the upper left side of the connecting rods. The lower side of the U-shaped plate fits tightly against the upper left side of the electric hammer body. An elastic component is provided in the middle of the U-shaped plate, and a movable rod is movably provided inside the left end of the connecting rods. In this utility model, during drilling, the protective cover and support strip can be pushed tightly against the wall by a spring. The protective cover covers the drilling area, and the support strip increases the contact area with the wall, making it easier for operators to determine whether the drill bit is perpendicular to the wall, thus ensuring consistent verticality. Simultaneously, it can block most of the flying dust during drilling, avoiding dust pollution.

The present application relates to green flower vegetable fresh-keeping paper and preparation method and application, including paper-like carrier, and further including powder-like Pickering emulsion freeze-dried sprayed on the carrier, components of the Pickering emulsion freeze-dried include 1-MCP, mustard essential oil, emulsifier and stabilizer.The green flower vegetable fresh-keeping paper has the effects of antibacterial, green protection, insecticidal and antioxidant on green flower vegetable, can realize long-acting fresh-keeping of green flower vegetable during storage, is suitable for large-scale popularization and application, is convenient for packaging and storage of large quantities of postharvest green flower vegetable, and raw materials are widely sourced, low in price, suitable for large-scale production and use, and the related raw materials are non-toxic and harmless to human body and environment, safe and reliable.

This utility model discloses a low-resistance, sound-absorbing, enhanced composite fiberglass duct, comprising a duct body and a sound-absorbing inner tube. The duct body includes, from the inside out, a porous aluminum plate layer, a first fiberglass cloth layer, a glass fiber layer, a second fiberglass cloth layer, and an outer protective color steel layer. The surface of the porous aluminum plate layer has multiple equidistantly distributed strip-shaped grooves, and ventilation holes are provided on the inner walls of both sides of the strip-shaped grooves. The sound-absorbing inner tube includes two pairs of upper supports, two pairs of lower supports, a first sound-absorbing aluminum tube, a fiberglass ring, and a second sound-absorbing aluminum tube. By setting the strip-shaped grooves and ventilation holes, the contact area between the airflow and the porous aluminum plate layer can be increased, allowing the glass fiber layer to better absorb sound waves. By setting the sound-absorbing inner tube, sound waves will contact the second and first sound-absorbing aluminum tubes from both the inside and outside sides respectively. Finally, the fiberglass ring can further reduce noise. This utility model effectively improves the sound absorption and noise reduction effect when the wind speed is high or the noise level is high.

The utility model discloses a kind of full support damage acoustic signal monitoring systems, it is related to bridge field, including construction ground, building wall is fixed above construction ground, full support is fixedly installed in building wall side, damage acoustic signal monitoring unit is installed in the end of full support away from building wall, the end of damage acoustic signal monitoring unit is electrically connected with display unit, display unit is located on construction ground;The utility model can know that the influence of the connecting mode between waveguide rod and steel pipe to acoustic emission signal by research, the acoustic emission signal waveform form of double-cell black hole coupling agent connecting device is more in line with bridge construction case actual, compared with no black hole direct connection, with the increase of propagation distance, double-cell black hole can reach more than 2.6 times of original, and signal enhancement effect of double-cell black hole is best, smearing 0.02mm coupling agent between waveguide rod and steel pipe in the inside of throat clamp can increase contact area, promote signal transmission, reduce signal loss.

The present application relates to the technical field of clothes processing, and particularly provides a drying system and clothes processing equipment, aiming to solve the problem of poor stability of the compressor caused by the existing installation mode of the compressor. To this end, the drying system of the present application comprises a base, a heat pump module and a metal bracket, the base is formed with a drying air duct, the evaporator and the condenser of the heat pump module are both installed inside the drying air duct, and the metal bracket is located between the compressor of the heat pump module and the base and is fixedly connected with the compressor and the base. By additionally arranging the metal bracket between the compressor and the base, the contact area with the base is increased, so that the compressor is more stable, the compressor is more stably operated, and the metal bracket has high structural strength, which is more conducive to improving the stability of the compressor. In addition, the metal bracket can also play a certain buffering role, which is conducive to reducing the vibration of the base, thereby reducing the noise during equipment operation and improving the user experience.

The present application relates to a kind of essential oil composition with whitening and freckle lightening effect and its preparation method, belong to the technical field of cosmetics.The essential oil composition with whitening and freckle lightening effect provided by the present application includes Italian helichrysum oil, rice germ oil, sandalwood oil, white spring chamomile flower oil, rust red rose seed oil and pink passion fruit seed oil treated by specific fermentation process, all ingredients are derived from natural plants, no chemical synthetic substance is added, irritability is low, safety is high, has good whitening, freckle lightening effect, also has anti-inflammatory, antioxidant and barrier repair effect, suitable for various skin.

The utility model provides a kind of spray dust removal desulfurization tower, including desulfurization tower body, disc-shaped shunt pipe is fixed in the inside of desulfurization tower body by connecting rod, serpentine shunt pipe is installed below the disc-shaped shunt pipe, the disc-shaped shunt pipe is connected through communicating pipe with serpentine shunt pipe, first nozzle is installed in disc-shaped shunt pipe bottom end surface, second nozzle is installed in serpentine shunt pipe circumferential surface, pump body is installed in the outside surface of desulfurization tower body, pump body output end is connected through pipeline with disc-shaped shunt pipe, pump body input end is connected through pipeline with treatment liquid.The utility model desulfurization tower body is fixed with disc-shaped shunt pipe and serpentine shunt pipe by unique design inside, and is equipped with first nozzle and second nozzle respectively.This structure makes treatment liquid be able to spray from different direction, different position, compared with traditional single spray structure, greatly increase the contact area of treatment liquid and waste gas.

The invention discloses a method for deeply recovering phosphorus and vanadium from molten iron containing phosphorus and vanadium, which comprises the following steps: treating the molten iron containing phosphorus and vanadium by adopting an oxygen blowing method, in the oxygen blowing method, directly blowing mixed gas into the molten iron by utilizing a spray gun, the volume concentration of the oxidizing gas is 18%-50%. The method has the advantages of improving the recovery rate of phosphorus and vanadium, reducing the smoke amount and the like, and also has the characteristics of low cost, short process, environmental friendliness, less carbon emission, high heat utilization rate, full utilization of resources and the like.

This utility model discloses a disc-lock type scaffolding, relating to the field of scaffolding. The utility model includes four bases and multiple crossbars. Each of the four bases has a stud welded to its top, and the outer wall of the stud is threaded with an adjusting nut. A vertical pole is fitted onto the top of the stud. This utility model incorporates a pin, anti-slip plate, slot, locking plate, slide block, spring, and push block. After the hook is hung on the corresponding crossbar, the worker first pushes the push block, which moves the slide block. The slide block then compresses the spring and moves the locking plate. Next, the anti-slip plate is rotated, causing its inner wall to fit against the outer wall of the crossbar, and the locking plate rotates into the slot. Then, the push block is pushed in the opposite direction, and the spring stretches, causing the slide block to return to its original position. When the locking plate is fully engaged in the slot, the anti-slip plate is locked in place. The anti-slip plate and hook form a ring-shaped engagement on the crossbar, increasing friction and improving the stability of the hook and footboard.

The utility model relates to the technical field of civil air defense engineering, in particular to a civil air defense filtering absorber with a ventilation conversion function, which comprises a shell, a cooling cavity is arranged in the shell, cooling water is stored in the cooling cavity, a water replenishing pipe is arranged on the outer side of the shell, and an air cooling mechanism is arranged in the shell. The air cooling mechanism comprises an air guiding pipe fixedly connected to the top end of the shell, a plurality of sets of cooling coiled pipes are arranged on the two sides of the cooling cavity, the bottom end of the shell is fixedly connected with a coolant storage box, the coolant storage box is communicated with the cooling coiled pipes, and a circulating pump is installed at the bottom end of the coolant storage box. The shell is matched with the air cooling mechanism, filtered clean air is guided into the snakelike passing pipe through the air guiding pipe, heat exchange is conducted between the snakelike passing pipe and cooling water in the cooling cavity, and therefore the heat exchange efficiency of the cooling water in the cooling cavity is guaranteed, and damage caused by high-temperature air is avoided.

This utility model provides a feeding device for a bright steel bar grinding machine. The feeding device includes a rectangular base and a conveying assembly. A rectangular cavity is formed inside the rectangular base, and a sliding groove is formed on the left side of the rectangular base, communicating with the rectangular cavity. A lifting assembly is installed between the sliding groove and the inner wall of the rectangular cavity. In this feeding device for bright steel bar grinding, when the threaded block drives the connecting plate upwards, the connecting plate, through a push plate, drives the steel bar near the rectangular opening upwards. After the steel bar leaves the conveying pipe, it automatically rolls to the left side of the rectangular base, closely adhering to the rectangular base until the steel bar moves to the top of the rectangular base, and finally rolls into the grinding groove. When continuing to pick up material, the threaded block drives the connecting plate downwards. When the push block contacts the steel bar, it squeezes the steel bar into the conveying pipe until the push block moves below the steel bar. The steel bar closest to the rectangular opening then automatically rolls to the baffle, facilitating the conveying of the next set of steel bars.

The utility model discloses a CVD coating frock suitable for arc top blind pipe class product outer wall surface, including cloth gas board, install a plurality of support pegs on cloth gas board, and arc top blind pipe adopts the mode of arc top downward, flat mouth upward and deposits, be equipped with the gas hole on the cover, and the support post one side is equipped with the thimble, and the support peg body and the support post lower part all are equipped with the support ring board, and the support ring board's lower part all are equipped with the assembly guide rod, and the assembly guide rod both sides are equipped with the first plane, and the neck-in portion outside is equipped with the buckle, and the buckle middle part is equipped with the assembly hole that cooperates with the assembly guide rod, and the assembly hole both sides are equipped with the second plane corresponding with the first plane, the utility model discloses arc top blind pipe adopts the mode of arc top downward, flat mouth upward and deposits, and the technological gas goes in and goes out, and arc top downward is favorable to dispersing airflow, guarantees the deposition effect of arc top, from outside, and the support peg and the support post lower part are connected with cloth gas board through the buckle, avoids the problem that traditional screw connection is difficult to separate because of CVD product coating adhesion, and is convenient to dismount.

The utility model discloses an emulsifier tail gas adsorption processing device, including the box, the feed inlet of box is provided with the filter bin, and the top of filter bin is provided with the air inlet pipe, be provided with the filter screen in the box, filter screen side is provided with adsorption cover, adsorption cover side is provided with the exhaust fan, the other end of exhaust fan is connected with the gas collecting pipe, the other end of gas collecting pipe is inserted in the liquid in the inner cylinder body, and is provided with the check valve on the gas collecting pipe, be provided with the stirring mechanism in the inner cylinder body, the inner cylinder body top is inserted with the exhaust pipe, and the exhaust pipe is connected with the purification ball, the outer portion of inner cylinder body is provided with tail gas cooling mechanism. The utility model discloses scientific and reasonable structure design, through motor drive pivot and stirring paddle rotation to agitate neutral liquid, make neutral liquid and tail gas contact area increase, and the neutral efficiency improves greatly, and the gas through processing is filtered after discharging to the collection device in the purification ball, improves tail gas absorption efficiency.

The utility model relates to the technical field of acid gas treatment, in particular to a multi-stage treatment system for acid gas, which comprises a first-stage alkaline tower, a second-stage alkaline tower, a dehydration facility and an activated carbon adsorption facility which are connected in sequence, the device disclosed by the utility model has the beneficial effects that the two stages of alkaline washing towers are connected in series, so that the total gas-liquid contact area is increased, and the removal efficiency of acid gas is improved; through the dense design of nozzles on the periphery of the tower body, the liquid film coverage rate of the tower wall area is increased, gas escape is avoided, and the alkali washing efficiency is further improved; the Pall ring packing is made of CPVC materials, the corrosion resistance is better than that of traditional PP materials, the service life is prolonged, meanwhile, the packing layer is high in anti-blocking capacity, and the shutdown cleaning frequency is reduced.

The invention discloses a wafer-level test probe station environment temperature calibration method, system and device and a medium. The method comprises the steps that a heat conduction block is controlled to be placed at any test point position on the surface of a probe station tray; the detection part of the control temperature sensor is inserted into the hollow hole channel of the heat-conducting block; the probe station is controlled to be heated to a target temperature value, and temperature time sequence data are collected through a temperature sensor; when a temperature stable state is reached, calculating a temperature calibration difference value based on the temperature time sequence data; controlling each test point of the heat conduction block and the temperature sensor on the surface of the tray to obtain a temperature calibration difference value of each test point; and according to the temperature calibration difference value of each test point, determining an overall temperature calibration value and carrying out temperature calibration. According to the invention, the problems that errors are caused by small contact area in traditional contact measurement, and temperature stable nodes cannot be judged and the uniformity of a tray temperature field cannot be evaluated are solved, the temperature quantification precision and calibration accuracy of a wafer-level test environment are improved, and the reliability of a chip test result is guaranteed.

The utility model discloses a kind of dielectric fiber driven grippers, including mounting base and the assembly on the mounting base of several clamping jaw mechanisms, all the clamping jaw mechanisms are distributed along circumference, to realize the automatic centring of object and catch;Each the clamping jaw mechanism includes hingedly connected first clamping jaw and second clamping jaw, and the first dielectric fiber driver for controlling the centripetal or centrifugal motion of the first clamping jaw is connected between the first clamping jaw and the second clamping jaw;The second clamping jaw is assembled on the mounting base.The utility model successfully provides a kind of gripper solution with low driving voltage, simple structure, light weight, high reliability and good grasping adaptability by combining low-voltage dielectric fiber driver with optimized design rigid clamping jaw mechanism, and it has excellent comprehensive performance and good application value.