Temperature and humidity self-control cigar tobacco circulating chain type upper and lower frame uniform air-curing device and air-curing method thereof

The invention discloses a temperature and humidity self-control cigar tobacco circulating chain type upper and lower frame uniform airing device which is characterized in that a driving chain assembly is arranged in the middle of the bottom end of a rack, and the driving chain assembly comprises a motor, a speed reducer and a driving chain wheel mounted on the speed reducer; transmission chain assemblies are arranged on the left side and the right side of the bottom end of the rack and connected with the driving chain assemblies through transmission chains. The circulating chain assembly comprises a main tensioning mechanism, idle wheels, a circulating chain and a hook piece, the tensioning mechanisms are symmetrically distributed on the lower portion of the rack front and back, the idle wheels are symmetrically distributed on the upper portion of the rack front and back, the circulating chain is hung on the idle wheels, and the hook piece is hinged to the circulating chain; the temperature ...

Urban inland inundation forecasting method based on network forecasting

The invention provides an urban inland inundation forecasting method based on network forecasting. Comprising the steps that rainfall station distribution of a target research area and historical rainfall data and a typicality rainfall process of rainfall stations are acquired; obtaining a rainstorm ponding point and ponding depth measured by a rainfall station within the current effective time to obtain rainfall spatial distribution, and performing grid division to obtain subspace distribution of each grid region; establishing an urban inland inundation prediction model based on historical rainfall data and a typicality rainfall process; performing waterlogging prediction based on an urban waterlogging prediction model in combination with the subspace distribution; and the real-time scene forecasting difficulty of each grid region is judged, a corresponding forecasting result is adjusted, and then the urban waterlogging condition is forecasted. The urban inland inundation prediction model ...

IRON-BASED AMMONIA SYNTHESIS CATALYST AND METHOD FOR PREPARING THE SAME

An iron-based ammonia synthesis catalyst consisting of the following components, by weight: 89 to 96% of iron oxides; 1.5 to 3.0% of alumina; 0.3 to 1.0% of potassium oxide; 1.0 to 2.0% of calcium oxide; 0.1 to 1.0% of magnesium oxide; 0.1 to 2.0% of molybdenum oxide; 0.1 to 0.5% of tungsten oxide; 0.2 to 1.0% of mixed rare earth metal oxides; wherein the sum of the above percentages equals to 100%, the weight ratio of molybdenum oxide to tungsten oxide is in the range of 1-4:1, and the Fe2+/Fe3+ ratio is in the range of 0.4-0.6. The catalyst is prepared by fusion method. The catalyst has high catalytic activity at low temperature under low pressure, e.g. the ammonia concentration at reactor exit is 20.2% by volume, and has good heat resistance and poisoning resistance.

膨胀水壶

Disc-type organic fertilizer preparation equipment with conveniently adjusted inclination angle

The utility model provides disc-type organic fertilizer preparation equipment with a conveniently adjusted inclination angle, which comprises a bottom frame, a rotating frame is hinged to one side of the top of the bottom frame, and an inclination angle adjusting device for adjusting the inclination angle of the rotating frame is arranged between the rotating frame and a middle cross beam of the bottom frame. A speed reducer is fixedly installed on the top of the rotating frame and connected with a power device used for driving the speed reducer to transmit, and an output shaft of the speed reducer is connected with a main shaft at the bottom of the rotating disc through a coupler. The organic fertilizer pelleting equipment can be used for pelleting organic fertilizers, a traditional extrusion pelleting mode is replaced, the pelleting effect is guaranteed, the inclination angle of the organic fertilizer pelleting equipment can be conveniently adjusted, then granular materials with different ...

LED ENERGY-SAVING LAMP LIGHT-SOURCE MODULE, AND LED ENERGY-SAVING LAMP

Provided is an LED energy-saving lamp light-source module, comprising: a sealed translucent tube (1), a lamp core base (2) arranged on the translucent tube (1), an LED light-emitting strip (3) fixed to the lamp core base (2) located inside the translucent tube (1), and a heat-transferring protective gas filling the interior of the translucent tube (1); the lamp core base (2) is provided with a connecting filament (21); the electrode (34) of the LED light-emitting strip (3) is provided with at least one connection hole (4); the connecting filament (21) passes through the connection hole (4) and electrically connects the lamp core base (2) to the LED light-emitting strip (3). During manufacture, a connection hole (4) is first provided on both the positive electrode and the negative electrode of the LED light-emitting strip (3); then, the connecting filament (21) is passed through the connection hole (4) and wound around and bonded to the LED light-emitting strip (3), connecting the LED light-emitting ...

Street determination method and device, electronic equipment and storage medium

The invention provides a street determination method and device, electronic equipment and a storage medium, and relates to the field of architectural design, and the method comprises the steps: obtaining street data corresponding to a street data index in a to-be-detected street; the street data indexes comprise traffic data, environment data, block quality data and block vitality data; obtaining a street health degree result of the street to be detected according to a preset street health degree algorithm and the street data; wherein the street health degree algorithm is generated according to the weight of the street data index; the weight of the street data index is obtained by using a factor analysis method to obtain a latent variable, constructing a structural equation model based on the latent variable and obtaining through the structural equation model; and determining a target street based on the street health degree result. The interaction between the street data indexes and the ...

Steel beam hoisting connection structure

The utility model relates to the field of steel structures, in particular to a steel beam hoisting connecting structure which comprises two mounting frames arranged in a spaced mode, clamping grooves are formed in the two opposite sides of the two mounting frames, a connecting assembly is arranged between the two mounting frames, and the connecting assembly is detachably and fixedly connected with the two mounting frames. The hoisting device has the effects that the hoisting device is convenient to use when hoisting the steel beam, and the adaptability to wing plates with different widths or thicknesses is good.

Mechanical vibration measuring device for electrical engineering

The invention provides an electrical engineering mechanical vibration measuring device which comprises a bottom plate, a measuring device body is arranged at the top of the bottom plate, an iron core is arranged in a sealing plate, a fixing plate is arranged at the bottom of a mounting column, a groove body is formed in the bottom of a connecting column, a permanent magnet block is arranged on the side edge of a first connecting plate, and the connecting column is arranged at the bottom of a piezoelectric rod. A dielectric block is arranged at the bottom of the electrode plate, a guide rail plate is arranged on the side edge of the second connecting plate, and a positioning plate is arranged at the bottom of the fixing pin. According to the mechanical vibration measuring device for the electrical engineering, through installation of the permanent magnet blocks, the situation that the device cannot be used due to the fact that the device is easily interfered by a surrounding magnetic field ...

Method and system for calibrating phase error of control loop of hemispherical resonator gyroscope on line

The invention discloses a method and system for online calibration of a phase error of a control loop of a hemispherical resonator gyro, and the method comprises the following steps: constructing a driving mode transfer function of the hemispherical resonator gyro, and drawing an amplitude-frequency characteristic curve and a phase-frequency characteristic curve based on the driving mode transfer function; performing frequency domain analysis on the driving mode transfer function of the hemispherical resonator gyroscope based on the amplitude-frequency characteristic curve and the phase-frequency characteristic curve to obtain an analysis result; on the basis of the analysis result, phase error parameters are calibrated online, and compensation of the phase error of the control loop is completed. The method is easy to operate, external instruments and equipment are not needed, only the hemispherical resonator gyroscope needs to operate normally, and other solutions are completed through ...

Hand -held type hydraulic crushing pick switching -over valve case

... 本实用新型公开了一种手持式液压破碎镐换向阀阀芯，包括有上筒体、中筒体、下筒体，所述的上筒体、中筒体、下筒体，从上到下依次分布为一个整体，其整体加工成型，所述中筒体的外径分别大于所述上、下筒体的外径，所述的中筒体上、下端分别与所述的上筒体的下端、下筒体的上端连接处外围形成环形边沿。本实用新型克服了现有技术的不足，设计结构合理，上、下筒体的四周分别具有环形边沿，分别形成不同的液压受力面积，提高了液压破碎镐执行器件的运动速度，从而提高了液压破碎镐的工作效率。 ...