12results about How to "Improve unevenness" patented technology

This invention discloses an acid cleaning fixture for a 166MHz quarter-wavelength superconducting cavity. The acid cleaning fixture comprises a large-tube side fixture, a small-tube side combined fixture, and an acid flow guiding fixture. The large-tube side fixture serves as the acid inlet or outlet of the superconducting cavity system. One end of the fixture is sealed to the large-tube flange of the superconducting cavity system, and the other end is connected to the acid cleaning equipment via a first connecting flange and a connecting pipe. The small-tube side combined fixture also serves as the acid inlet or outlet of the superconducting cavity system. One end of the fixture is sealed to the small-tube flange, the coupler flange, and the flanges of each rinsing port of the superconducting cavity system. The other end is connected to the acid cleaning equipment via a second connecting flange and a pipeline. The acid flow guiding fixture is located inside the superconducting cavity system and communicates with the large-tube side fixture. It guides the flow of acid entering the superconducting cavity system through the large-tube side fixture and balances the acid flow rate. This invention significantly improves the acid cleaning effect of the superconducting cavity and ensures smooth bubble removal.

The present application provides a vertical roller mill in which unevenness in flow velocity of inward airflow in a classification rotor of a separator is improved. The vertical roller mill has a rotating table, a pulverizing roller disposed on an upper surface of the rotating table, a separator that classifies pulverized material conveyed by flow of gas, and a mill housing having an exhaust port disposed above the separator. The separator includes a classification rotor and guide vanes disposed around the classification rotor. The guide vanes have a plurality of layers of guide vane rows in the up-down direction. The plurality of layers of guide vane rows include a first layer of guide vane rows having first layer guide vanes arranged in a ring shape around the classification rotor with a rotor shaft as a center, and a second layer of guide vane rows having second layer guide vanes arranged in a ring shape around the classification rotor with the rotor shaft as a center, the passage cross-sectional area of gas in the first layer of guide vane rows being smaller than the passage cross-sectional area of gas in the second layer of guide vane rows.

The utility model discloses a battery cell liquid cooling restraining tray, the battery cell liquid cooling restraining tray comprises a battery cell tray and a plurality of liquid cooling assemblies, the battery cell tray is used for bearing a plurality of battery cells; each liquid cooling assembly comprises a capsule piece and a water cooling plate, the water cooling plate is concaved inwards to form a groove, the periphery of the capsule piece is connected to the periphery of the groove of the water cooling plate in a sealing manner so as to define a deformable closed cavity, and the water cooling plate is arranged on the battery cell tray; the water cooling plate is provided with a liquid inlet connector and a liquid outlet connector, the liquid inlet connector and the liquid outlet connector are respectively communicated with the closed cavity, and temperature control liquid can be introduced into the liquid inlet connector, so that the capsule piece expands to extrude the battery cell and perform heat exchange. According to the technical scheme, the heat dissipation efficiency of the battery cell can be improved, the temperature uniformity of the battery cell is ensured, and energy consumption is reduced.

This utility model relates to the field of battery manufacturing technology, and in particular to a winding needle and winding device for lithium-ion batteries. The device includes a fixed platform, a support shaft, and a needle body. The needle body comprises a first section and a second section. The first section is connected to the support shaft. A plurality of first protrusions are formed at equal intervals along the axial direction on the outer wall of the first section. A plurality of second protrusions are formed at equal intervals along the axial direction on the outer wall of the second section. The distance between two adjacent first protrusions is smaller than the distance between two adjacent second protrusions, and the major axis radius of the first protrusion is smaller than the major axis radius of the second protrusion. The winding needle of this utility model can reduce the spiral phenomenon during winding of cylindrical lithium-ion batteries, improve the consistency of positive and negative electrode coating, and improve the unevenness of the upper and lower end faces caused by spiraling during winding of cylindrical lithium-ion batteries, significantly improving the production yield and appearance of cylindrical lithium-ion batteries.

The application relates to the technical field of semiconductors, and particularly relates to a high-brightness red LED chip for display and a manufacturing method thereof. The high-brightness red LED chip for display comprises, from bottom to top, an AlN substrate, an Au bonding layer, an In bonding layer, a barrier layer, a silver mirror layer, a transparent conductive layer, a silicon dioxide pattern layer, a magnesium fluoride pattern layer, a P-type window layer, a P-type transition layer, a P-type confinement layer, an MQW light-emitting layer, an N-type confinement layer, an N-type current expansion layer, an N-type electrode protection layer and an N-type ohmic contact layer; the chip sidewall has a step cutting path etched from the chip upper surface to the P-type window layer, the step cutting path is locally widened on the opposite side of the N electrode to form a step surface, the step surface is used for arranging the P electrode, and the P electrode expansion pad is embedded in the transparent conductive layer; the above LED chip structure provided by the application has good current expansion uniformity, luminous brightness, heat dissipation and reliability.

The present application belongs to the technical field of forging of high-temperature alloy conical disc forgings, and particularly relates to a process method for preforming of a large high-temperature alloy conical disc die blank. The present application realizes uniform deformation by means of the "die blank", distributes deformation of each part by means of "die preforming", removes the deformation dead zone through local cold die layer processing in the subsequent process, realizes die forging deformation distribution, realizes uniformity of the structure by means of "die forging", and uses small equipment to do big things, and completes the hot working process of the structure and the performance under the controllable deformation condition.

The utility model provides a kind of temperature control mould of multi-sensing perception, for glass hot bending forming device, temperature control mould includes: mould body, sub-mould, first heating part, second heating part and temperature sensing part, mould body is cuboid, the outer edge of sub-mould is circular arc, sub-mould is detachably installed on mould body, first heating part is installed on mould body and carries out heating to glass piece, second heating part and temperature sensing part are installed on sub-mould, temperature sensing part detects the temperature of glass piece located on sub-mould, second heating part adjusts and local heat preservation according to the data of temperature sensing part, the local temperature of glass piece located on sub-mould;The utility model is detachably installed different appearance sub-mould on mould body, satisfy the hot bending forming of different shape glass piece, improve the non-uniformity of heating using first heating part alone, realize high-precision heating, improve forming quality, improve finished product yield.

The application discloses a slitting device with dust removal function, which comprises a machine body, a water spraying module, a slitting module and a dust removal module. The machine body is divided into upper and lower shells, and four guide wheels are arranged under the shells. The water spraying module is arranged at the front end of the machine body, a water tank is connected with a water guide pipe through a water pump, the slitting module is connected with a spring suspension at the middle part of the machine body, an oil return system is fixed on the outer wall of the suspension through a platform, an oil pump is connected with an oil tank and a reversing valve, the reversing valve is arranged at the bottom of the platform, the reversing valve is connected with an oil return cylinder and fixed on the side of the platform, the oil return cylinder is connected with the spring suspension, the two oil return cylinders of the oil return system are connected with each other, the oil return cylinder is connected with a clutch, the clutch is connected with an input and output shaft, centrifugal blocks are arranged on the output shaft, the input and output shafts are connected through bevel gears, and a belt drive is arranged between the engine and the bevel gears. The dust removal module is arranged at the end of the machine body, the engine is connected with dust removal blades of the dust removal module through a belt drive, the dust removal blades are fixed in a dust removal tank, and a filter screen is arranged on the dust removal port.

The utility model provides a lens array structure, and aims to solve the problems of unstable connection between a lens array and an optical fiber, low optical transmission efficiency, high assembly difficulty and the like in the prior art. The structure is characterized in that a lens array can efficiently couple laser emitted by a laser into an optical fiber through optical design; the optical fiber patch cord is matched with the limiting groove of the lens array through a cylindrical anchor point, so that high-precision positioning is realized; the optical fiber glue injection bin can inject UV glue or matching liquid with the same refractive index as the optical fiber, the unevenness of the fracture surface of the optical fiber is optimized, and the optical transmission effect is improved; a tight package positioning point and a loose package positioning point between the lens array and the laser or photodiode substrate realize rapid positioning and preliminary fixation of the lens array. According to the utility model, through multi-dimensional innovative design, the optical transmission efficiency, the assembly precision and the structural stability are obviously improved, and the device is suitable for the fields of optical communication, laser processing and the like.

This invention provides an evaporation boat, its preparation method, and its application in the preparation of current collectors. The evaporation boat comprises modified boron nitride (BN), which includes boron nitride (BN) and Y-Al-O compounds distributed at its grain boundaries. This evaporation boat can reduce the number and / or particle size of boron particles sputtered onto the surface of current collectors, such as composite aluminum current collector films, during the evaporation process, thereby improving the surface unevenness of the current collector and thus mitigating the problem of strip breakage that occurs during subsequent coating and rolling of the current collector at the cell end.

This utility model relates to a planar magnetic headphone magnet unit with a magnetically conductive structure. It includes a diaphragm, a permanent magnet array, and a support frame. The permanent magnet array consists of multiple strip-shaped permanent magnets symmetrically distributed on both sides of the diaphragm. A magnetically conductive alloy with a permeability μ≥10 is fixedly disposed on the outer side of the non-working surface of each strip-shaped permanent magnet. 4 A soft magnetic material with resistivity ρ≥50μΩ·cm has a U-shaped semi-enclosed cross-section that matches the magnet profile; the magnetic alloy is 0.1-0.5mm thick and has a 0.05-0.2mm gap with the magnet. Optionally, a hollow design is adopted. By constraining the magnetic field diffusion, the magnetic flux density is increased by 18% and the uniformity by 40%. At the same time, the alloy coating reduces the magnet breakage rate by 80%, achieving a synergistic breakthrough in acoustic performance and mechanical reliability.

The invention discloses a production method for improving tempering efficiency of steel plates. The production method comprises the following steps: stacking the steel plates in a furnace at intervals for tempering treatment. The roller hearth type tempering furnace for medium plate heat treatment is utilized, under the condition that the original single steel plate tempering heat treatment process temperature and the in-furnace time are not changed, simultaneous tempering heat treatment of two steel plates is achieved, all properties of the steel plates meet corresponding standard requirements, the unevenness is good, the production efficiency is improved by 70%-75%, energy consumption is greatly saved, and the production cost is reduced. And the productivity is effectively released.