7results about How to "Overcome disadvantages" patented technology

The present invention relates a mechanical structure (also known as mounting structure) for installing cover plates of the pasta machine, a method for installing cover plates of the pasta making machine, and a pasta machine with brackets and cover plates.

The invention provides a D-pantothenic acid fermentation multi-target dynamic optimization method based on biological-digital twinning, which comprises the following steps: constructing a biological soft sensor through multiple machine learning model algorithms, and combining the constructed biological soft sensor with a neural network. Meanwhile, fermentation process conditions are optimized by applying a particle swarm algorithm and a genetic algorithm, so that the whole fermentation process simulation monitoring under data driving is realized, the problems of insufficient accuracy and poor robustness when a traditional prediction technology is used for processing complex fermentation data are effectively solved, and the predictability and controllability of the fermentation process are improved.

This disclosure relates to a polishing composition that includes at least one abrasive; at least one nitride removal rate reducing agent, an acid or a base; and water. The at least one nitride removal rate reduce agent can include a hydrophobic portion containing a C4 to C40 hydrocarbon group; and a hydrophilic portion containing at least one group selected from the group consisting of a sulfinite group, a sulfate group, a sulfonate group, a carboxylate group, a phosphate group, and a phosphonate group; in which the hydrophobic portion and the hydrophilic portion are separated by zero to ten alkylene oxide groups. The polishing composition can have a pH of from about 2 to about 6.5.

The utility model relates to land management technical field especially relates to a land sampling device for land management, is provided with screw sleeve through the rotation of the limiting ring, is equipped with driven gear on screw sleeve, is provided with lifting screw in screw sleeve internal thread, is connected sampling cylinder through the fixed piece that is composed of two fixed nuts and fixed screw below lifting screw, the conical surface that has below sampling cylinder extends to the inside of installation cylinder, sets up installation box above installation cylinder, is rotatably arranged with the driving gear that meshes with driven gear in installation box, driving gear rotates through the rotating disc. This manual operation mode avoids using motor and battery, will not make the device overall weight because motor and battery and substantially increase, also will not cause motor and battery short circuit fault because of rainy season rainwater infiltration, the whole structure guarantees sampling function at the same time, effectively overcomes the drawbacks of motor drive mode in outdoor use.

A short circuit current-resistant and arc-extinguishing DC relay comprises two stationary contact lead-out ends, a movable spring plate in the form of a flat plate, a push rod assembly, an upper fixed yoke, an upper follower yoke, and a lower armature. The upper fixed yoke is fixed to the push rod assembly and positioned above the movable spring plate in a location corresponding to a location between two movable contacts. The upper follower yoke is fixed to the push rod assembly and positioned above the movable spring plate in a location corresponding to the location between the two movable contacts. The lower armature is fixed to a bottom end surface of the movable spring plate. The upper fixed yoke, the upper follower yoke and the lower armature are respectively arranged in a width direction of the movable spring plate, and form two magnetic conductive loops in the width direction of the movable spring plate. The above arrangement can enhance electromagnetic attraction, thereby achieving a short-circuit current resistance up to the 16kA level for a product.

This application proposes a thermal storage and heat exchange system and method. The thermal storage and heat exchange system includes a thermal storage and release medium in the form of solid particles; a heater for heating the thermal storage and release medium passing through the heater; a first storage tank located downstream of the heater for receiving and storing the heated thermal storage and release medium; a heat exchanger located downstream of the first storage tank for receiving the thermal storage and release medium, allowing the thermal storage and release medium to exchange heat with a first medium delivered to the heat exchanger; and a second storage tank located downstream of the heat exchanger for receiving the thermal storage and release medium. The discharge port of the second storage tank is connected to the heater. The thermal storage and heat exchange system uses solid particles as the thermal storage and release medium. Through the coordinated operation of the heater, the two storage tanks, and the heat exchanger, the thermal storage efficiency of coal-fired power plant coupling is improved, adapting to the needs of flexible retrofitting of coal-fired power plants.

A magnetic clutch comprises a driving shaft, a driven shaft, a clutch center body, a shell and a plurality of clutch mechanisms, the shell is fixedly connected with the driven shaft, the clutch center body is arranged in the shell, the middle of the clutch center body is fixedly connected with the driving shaft, inner holes are evenly formed in the clutch center body, and the clutch mechanisms are arranged in the inner holes. Each group of clutch mechanism comprises a clutch core rod, a movable magnet, a fixed magnet, a limiting nut and a clutch chip, the limiting nut is in threaded connection with the inner orifice, the movable magnet and the fixed magnet repel each other, and the clutch core rod sequentially penetrates through the movable magnet, the fixed magnet and the limiting nut from the middle and then is connected with the clutch chip. The clutch chip is separated from or tightly attached to the shell through the interaction of magnetic force and centrifugal force, so that the driven shaft is driven, rotation kinetic energy is transmitted to the driven shaft from the driving shaft, the clutch function is achieved, the higher the rotation speed is, the tighter the abutting force of the clutch chip and the shell is, the tighter the transmission force is, the structure is simple and direct, efficiency is high, manufacturing is easy, and cost is low. And the cost is low.