14results about How to "Set evenly" patented technology

The utility model discloses an out-of-focus and dot matrix composite lens for myopia control, which comprises a lens main body, a correction area, a central optical correction area, a central out-of-focus prevention and control area and a peripheral out-of-focus prevention and control area are arranged in the lens main body, and dot matrix areas are arranged in gaps of the central out-of-focus prevention and control area and the peripheral out-of-focus prevention and control area. And an out-of-focus transition area is arranged between the central optical correction area and the central out-of-focus prevention and control area. Compared with the prior art, the utility model has the advantages that the diameter of the optical correction area is reduced to 8mm, so that the defocus imaging effect is closer to the central area beside the retina macular fovea center, the prevention and control effect is enhanced, the transition area is added in the optical correction area, the initial wearing comfort is improved, the correction area and the transition area are converted more naturally, and the defocus ratio is close to 1: 1; the fusion mechanism of the visual center of the brain is fully utilized, the defocusing effect is ensured, and the definition and the contrast sensitivity required by daily life and learning are also ensured.

The invention discloses an automatic crushing and sorting device for diamond synthetic blocks. The automatic crushing and sorting device comprises a synthetic block crushing mechanism, a conveying and screening mechanism and a control module. The synthetic block crushing mechanism comprises a shell, a feeding port and a discharging port are formed in the shell, a discharging plate is arranged below the feeding port, a plurality of impact mechanisms are arranged on the periphery of the discharging plate in a surrounding mode, an inductor is arranged on one side of the discharging plate, a material channel is arranged below the discharging plate, the discharging port is formed in the tail end of the material channel, and the discharging plate is connected with an opening and closing mechanism. The impact mechanism comprises a guide groove, a guide frame is embedded in the guide groove, an impact cone is installed on the guide frame, a wobble wheel is arranged in the guide frame, the wobble wheel is connected with an output shaft of the transmission mechanism, and the wobble wheel is used for moving under driving of the transmission mechanism and driving the guide frame to move. The guide groove is used for providing a movement track and support for the guide frame when the guide frame moves. The device realizes step-by-step crushing, recovery and separation of the diamond synthetic blocks, improves the diamond recovery rate, and reduces the material loss.

The utility model relates to the technical field of electric heating tubes, in particular to a heating tube, which is used for generic semiconductor equipment and comprises a tube base body and an electric heating film layer, the tube base body is provided with a spiral tube part, at least part of the electric heating film layer is located on the outer wall of the spiral tube part, the screw pitch of the spiral tube part is Dj, the outer radius of the spiral tube part is r, and Dj is larger than 3r. The screw pitch of the spiral pipe part and the outer radius of the spiral pipe part are reasonably arranged, it can be guaranteed that the electrothermal film layer of the spiral pipe part is arranged more evenly, and the evenly-arranged electrothermal film layer can guarantee the better fluid heating effect.

This utility model discloses a compound probiotic raw material mixing device, including a mixing tank. A feed pipe is fixedly installed on the mixing tank, and a discharge pipe is fixedly connected to the bottom of the mixing tank. An electromagnetic valve is fixedly installed on the discharge pipe. An installation ring is rotatably arranged inside the mixing tank. Two sets of connecting rods are fixedly installed on the circumference of the installation ring. Each set of connecting rods is fixedly connected to a vertical rod. An arc-shaped scraper is installed on one side of each vertical rod, and one side of the arc-shaped scraper is in contact with the inner wall of the mixing tank. An installation plate is fixedly connected to the upper end of each vertical rod. In this utility model, the arc-shaped scraper scrapes off the raw material adhering to the inner wall of the mixing tank. The stirring rod and the auger blade work together to stir and mix the raw material, improving the uniformity of the mixture and ensuring a balanced distribution of probiotics, thereby improving the overall quality and efficacy of the product.

This application discloses a spatial light modulator, driving method, free-space optical antenna, device, and system, relating to the field of free-space optical communication technology. The spatial light modulator includes a first substrate, a first electrode, a liquid crystal layer, a second electrode, and a second substrate. The first electrode is a planar electrode, and the second electrode includes multiple sub-electrodes spaced apart from each other. The multiple sub-electrodes are arranged sequentially from the inside to the outside around a center. When different driving voltages are applied to the first electrode and the sub-electrodes respectively, the liquid crystal material in the liquid crystal layer flips under the action of the electric field, resulting in different equivalent dielectric constants of the liquid crystal material. This allows the spatial light modulator to adjust the intensity and phase of the incident light beam to modulate different types of light beams, achieving adaptive switching of light beam types. In particular, it can achieve adaptive switching of different types of light beams in a sharp beam, improving anti-turbulence capability and enhancing the stability of the communication link.

The quincunx ground heat exchanger comprises an inner pipe, outer pipes and a bottom sealing section, the multiple outer pipes are arranged on the outer wall of the inner pipe at intervals, every two adjacent outer pipes are not in contact, the contact area of the outer pipes and the stratum is effectively increased, and the heat exchange amount and the heat exchange efficiency of the outer pipes are remarkably improved; the outer wall surface of the inner pipe is tangent to the contour line of the outer wall surface of the outer pipe, and the contact area is obviously reduced through point contact between the outer pipe and the inner pipe, so that heat loss caused by heat exchange of high-temperature fluid in the inner pipe to the outer pipe is reduced; in the construction process, the backfill material with low heat conductivity coefficient is filled between the outer part of the inner pipe and the adjacent outer pipe, so that the outward heat loss of the thermal fluid in the inner pipe is further reduced, the single well heat extraction efficiency of the buried pipe is greatly improved, and the construction cost of utilizing the geothermal energy in the middle-deep layer is saved.

The utility model belongs to the technical field of underwater rescue, and particularly relates to an indoor swimming pool emergency life-saving system which comprises a swimming pool, a plurality of grid meshes are evenly distributed at the bottom of the swimming pool, the grid meshes are installed at the tops of hydraulic lifting piles, cylinder bodies of the hydraulic lifting piles are not higher than the pool bottom of the swimming pool, and a separation net is laid on the edge, adjacent to the other grid mesh, of each grid mesh. The upper end of the separation net is hung on a pull rope, one end of the pull rope is tied and hung on one stand column, the other end of the pull rope bypasses a pulley assembly installed on the other stand column and is connected with the inner wall of the swimming pool, the stand columns are installed on grid meshes, and each grid mesh is provided with a signal processor capable of being wirelessly connected with a bracelet. The hydraulic lifting pile is electrically connected with a shoreside switch and a signal processor. The grid mesh is arranged in a partitioned manner and can automatically sense the position of a person to carry out corresponding lifting rescue, so that drowning is avoided; and the separation net is lifted while the hydraulic lifting pile is lifted, so that the rescued person is prevented from falling off from the grid net.

The utility model discloses a coke oven gas low-nitrogen combustor which comprises a combustor body, a hearth is arranged in the combustor body, an air inducing assembly is correspondingly arranged on the left side of the combustor body, and a combustor assembly communicated with the air inducing assembly is correspondingly arranged on the left side of the air inducing assembly. A tertiary air inducing pipe and a secondary air inducing pipe are arranged on the air inducing assembly; an igniter is arranged in the combustor assembly, a fuel gas leading-in pipe is correspondingly arranged on the shell, and a primary air leading-in pipe is further arranged on the combustor assembly. According to the device, primary inlet air, secondary inlet air and tertiary inlet air are arranged in the gas inlet and ignition stages, and are fully mixed and ignited in the air inducing assembly, so that the combustion efficiency and quality are improved; according to the device, the over-fire air ring and the over-fire air pipe for air inlet are arranged in the hearth, over-fire air can be introduced for air supplementation in the combustion stage in the hearth, the uniformity of combustion air and fuel distribution is guaranteed, and fuel gas and main combustion air are fully mixed and fully combusted.

The utility model discloses a protection board is used to wire harness welding, including lower protection shell, the upper protection shell is installed to lower protection shell top, and the lower protection shell and upper protection shell are connected with the inconstant length fixed bolt between, the inside of lower protection shell and upper protection shell all evenly is provided with the sliding slot. The utility model discloses through rotating the rotary disc, drives the rotation of rotating shaft, makes bevel gear set operation, in order to drive screw rod to do the rotary motion, even make movable adjusting plate up and down movement to drive the synchronous movement of the jib, magnetic block, in order to when using, need different specification lithium battery main part use, can promote the rising of jib, push magnetic block into the butt joint groove, make it with adsorption block mutual adsorption, can promote upper protection shell to move upward, to satisfy the protection use of different specification lithium battery main part, and cooperate with the use of different specification inconstant length fixed bolt, convenient operation.

The present invention discloses a valve seat, wherein a vacuum groove is formed on the cavity wall of the first sealing cavity near the nozzle hole. By setting the vacuum groove, when a high-speed fluid medium rotates along the cavity wall of the first sealing cavity and flows toward the nozzle hole, the high-speed fluid medium drives the air in the vacuum groove to form a cyclone, thereby forming a negative pressure state. In the process of forming the cyclone, the air enters the nozzle hole together with the fluid medium, and finally forms a mist-like spray. In this process, the cyclonic turbulence of the air in the vacuum groove can carry away the residual part of the fluid medium on the inverted cone surface or spherical arc surface structure below the sphere after the sphere contacts and seals with the inverted cone surface or spherical arc surface structure, thereby avoiding residual fluid medium, and further reducing the blockage of the nozzle hole by impurities after hardening and drying, thereby affecting the atomization effect.

This utility model discloses a lighting fixture, comprising a lighting module, a mounting base, and a bearing assembly arranged vertically. The lighting module is rotatably connected to the mounting base via the bearing assembly. At least three rolling ball bearings are provided between the lighting module and the mounting base, arranged around the rotation axis of the lighting module. The lighting module abuts against the mounting base via the ball bearings. This structure, on the one hand, provides a stable multi-point support structure by distributing at least three ball bearings around the rotation axis, significantly improving the overall stability and structural reliability of the lighting module during rotation. On the other hand, the rolling support of the ball bearings ensures multi-point rolling contact between the lighting module and the mounting base, reducing rotational friction resistance, making angle adjustment of the lighting module easier and more flexible, avoiding localized stress concentration, and extending the service life of the bearing assembly and the overall lighting fixture.

The utility model relates to the technical field of welding monitoring, in particular to a welding monitoring structure. The device comprises a monitoring part, a laser part, a reflecting part, a fixed seat and a laser table top, a first through hole and a second through hole are formed in the fixed seat, one end of the monitoring part is inserted into the first through hole, one end of the laser part is inserted into the second through hole, the reflecting part is located on the inner side of the fixed seat, and the laser part is located on the laser table top. The laser table top is located at the end, away from the monitoring piece, of the fixing base. Wherein during monitoring, the monitoring piece can monitor a welding workpiece placed on the laser table top through the reflecting piece; and a laser beam emitted by the laser part is reflected by the reflecting part to irradiate the welding workpiece. The monitoring precision in the welding process can be improved, and meanwhile the input cost of the lens is reduced.

This application discloses a tire and a cleaning robot. The tire includes at least two treads, each tread comprising teeth and grooves, with a groove formed between adjacent teeth. Each tooth has a tooth contact surface. On a projection plane perpendicular to the tire's axial direction, the projections of the tooth contact surfaces of at least two treads are discontinuous along the tire's circumference. This design, where the projections of the tooth contact surfaces of at least two treads are discontinuous along the tire's circumference on a projection plane perpendicular to the tire's axial direction, allows for the formation of gaps between adjacent treads at the discontinuities. These gaps provide the frictional resistance needed for climbing, facilitating the crossing of obstacles and preventing tire slippage. Specifically, when crossing obstacles, these gaps can accommodate at least part of the obstacle, allowing the teeth to grip and climb over it, resulting in smoother movement. Furthermore, the discontinuous tooth contact surfaces allow each tooth contact surface to deform independently, providing better cushioning and shock absorption.

The present invention discloses a variable cross-section pipe segment sinking positioning system and method, comprising a total transmission wheel, an intelligent gyroscope, a driving wheel installed on the variable cross-section immersed pipe segment, an underwater driven wheel installed on an underwater base trench, and a mooring transmission device between the driven wheel and the underwater driven wheel; the total transmission wheel is arranged on an adjacent shore or on a ship; the intelligent gyroscope is arranged on the upper part of the variable cross-section immersed pipe segment to monitor the floating state of the variable cross-section pipe segment in real time; at the same time, water is poured into the ballast water tank inside the variable cross-section immersed pipe segment to sink it, and during the sinking process, the inclination posture of the variable cross-section immersed pipe segment is measured by the intelligent gyroscope, and the stress on each mooring cable is measured, and the mooring cable force for adjusting the inclination posture balance is obtained through the calculation terminal, and the total transmission wheel is driven to rotate, so that the vertical displacement at each position of the variable cross-section immersed pipe segment is consistent, and the sinking balance of the variable cross-section immersed pipe segment is achieved. The present invention makes intelligent adjustment to the inclination of the pipe segment.