6results about How to "Increase sieving rate" patented technology

The invention provides a cleaning device with an adjustable screening behavior suitable for densely-planted corn, and belongs to the field of corn harvesting machinery. Comprising an upper screen box, a shaking plate, a centrifugal fan, a crank connecting rod mechanism and a lower screen box, the centrifugal fan is fixedly connected with a harvester, the shaking plate is arranged above the centrifugal fan, one end of the shaking plate corresponds to a discharging port of a threshing device, the other end of the shaking plate is provided with the upper screen box, and the lower screen box is arranged below the upper screen box. The ends, close to the centrifugal fan, of the upper screen box and the lower screen box are connected through crank connecting rod mechanisms, the crank connecting rod mechanisms are symmetrically arranged on the two sides of the upper screen box and the two sides of the lower screen box, and a structural unit of the vibrating screen with the adjustable screen penetrating behavior is composed of an upper-section screen plate, a middle-section screen plate, a lower-section screen plate and an inclination-angle-adjustable screen plate. The throwing force of the front end area of the vibrating screen on mixture particles and the vertical speed of air flow on the screen are increased, the separation effect of impurities and grains is promoted, the grain penetrating through the screen is improved, and the low-loss and high-cleanliness purposes of corn grain cleaning are achieved.

This utility model relates to the technical field of powder vibrating sieving, and more particularly to a multi-stage powder vibrating sieving device. The utility model provides a multi-stage powder vibrating sieving device, including a dustproof shell, a feed plate, a discharge plate, a guide plate, a vibrating motor, and connecting blocks. The feed plate is slidably fitted onto the top of the dustproof shell, and a feed inlet is opened on the top of the feed plate. The discharge plate is fixedly connected to the front side of the dustproof shell, and the guide plate is fixedly connected to the bottom of the dustproof shell. Two vibrating motors are fixedly connected to the bottom of the guide plate. Four connecting blocks are fixedly connected in a rectangular array at the lower part of the dustproof shell. This utility model, by setting a multi-layer screen structure, can sieve materials into three different particle size grades in one go, meeting various particle size requirements. Under the linear reciprocating vibration generated by the vibrating motor, the material jumps along the screen surface, fully contacting the screen surface and improving sieving efficiency.

This invention relates to the field of screening equipment technology, specifically a vibrating screen for hot-drilling equipment with negative pressure dust collection. It includes a support frame, to which circumferentially distributed first elastic elements are fixedly connected. These first elastic elements are collectively fixed to a screening cylinder. A screen cylinder cover is fixedly connected to the support frame. The screening cylinder is fixedly connected to a first screen, a second screen, and a bottom baffle. Both the first and second screens have an array of circumferentially distributed screen holes. A third screen is rotatably connected to the screening cylinder. An air supply module is installed on the support frame. This invention uses the screening cylinder, second screen, third screen, and bottom baffle to form a sealed cavity. The air supply module continuously supplies air into the sealed cavity, increasing the pressure within the cavity. When the screen holes on the second and third screens connect, the lower airflow impacts the blocking particles upwards, achieving the purpose of clearing the blockage caused by hot-drilling particles.

The invention provides a grading material distribution sieve plate, a thermal vibration sieve, a grate type heat removal device and a slag material distribution method, and relates to the technical field of steel slag treatment equipment.The grading material distribution sieve plate comprises a sieve plate frame structure, a sieve bar assembly and a leakage-proof structure, the sieve bar assembly is arranged on the sieve plate frame structure and can form a plurality of non-linear sieve holes, and the leakage-proof structure is arranged on the sieve plate frame structure; the multiple non-linear sieve holes are distributed in a radial mode, and the hole diameters of the non-linear sieve holes are gradually increased in the direction from the feeding end to the discharging end of the sieve plate frame structure; the leakage-proof structures are arranged on the sieve plate frame structure and arranged at the two ends of the sieve strip assembly, and the leakage-proof structures are used for preventing material leakage. Nonlinear efficient grading is achieved, the service life is prolonged, the technical requirement for efficient, stable and economical recovery of the molten steel slag can be better met, the method is particularly suitable for extremely severe working conditions such as waste heat recovery of the molten steel slag, and the technical requirement for efficient, stable and economical recovery is met.

This invention relates to the field of underground coal and gangue sorting technology, and in particular to an underground coal and gangue multi-layer feeding and screening device based on layered vibration adaptive technology. The device includes a multi-layer screening assembly, a drive assembly, and a control assembly. The multi-layer screening assembly is fixedly mounted on a frame and includes screening modules arranged longitudinally on the frame. Each screening module operates independently, and the screening particle size of the modules decreases progressively from top to bottom. The drive assembly is fixedly mounted on the frame and is connected to the screening modules via a transmission connection, providing screening power to the modules. The control assembly includes an electrically connected control module and a detection module. The control module is electrically connected to the drive assembly, and the detection module is used to detect the screening parameters of the coal and gangue. This application achieves efficient and stable screening under complex working conditions by decomposing thick material layers through multi-layer feeding, differentially configuring the vibration parameters of each layer, and introducing a real-time sensing and feedback adjustment mechanism, thereby promoting the clean utilization of coal.

The present application relates to the technical field of flip-flop screen, in particular to a combined mine flip-flop screen, which comprises a flip-flop screen body, a screen mesh, a cover body fixed above the screen mesh, and a feeding hopper installed above the cover body, the bottom end of the feeding hopper is communicated with the inside of the cover body through a distribution box, a plurality of screening channels are arranged in the cover body, an adjusting assembly is used to adjust the path length of the screening channels, a uniform material assembly is arranged in the distribution box, and the uniform material assembly is used to make the material fall uniformly onto the screen mesh; the present application can make the material of the feeding port fall uniformly in front of the screen surface, improve the utilization rate of the screen surface, avoid the non-uniform wear of the screen plate, prolong the service life of the screen plate, adjust the movement path length of the material on the screen surface when the feeding amount increases, adjust the residence time of the material on the screen surface, increase the number of times that the unit particle contacts the screen hole, provide more opportunities for the fine particle material to pass through the screen hole, improve the screen passing rate of the material, and ensure the grading accuracy of the material.