37results about How to "Feed amount is stable" patented technology

The invention discloses a small self-propelled alfalfa cradling and flattening machine, belonging to the technical field of agricultural machinery. The small self-propelled alfalfa cradling and flattening machine is mainly composed of a working device, a hydraulic lifting device, an operation system, a power and transmission system and a travelling system; the working device, the hydraulic lifting device and the operation system are arranged at the front part of the machine; the power and transmission system and the travelling system are arranged at the middle rear part of the machine; one end of the hydraulic lifting device is connected with the working device, and the other end of the hydraulic lifting device is connected with the machine frame; and the power and transmission system is connected with the operation system and the travelling system through the hydraulic device, gear transmission and a transmission part. The small self-propelled alfalfa cradling and flattening machine is designed for flattening and paving alfalfas into fluffy swathes while cradling alfalfas aiming at alfalfa obtaining works in small lands, such as hills, mountainous regions and the like; a cradling table device and a flattening device are connected by adopting a frame type structure, unparallel four-connecting-rod lifting mechanisms are adopted, and when the machine climbs, a cradling table can be lifted without influencing stability of the whole machine, so that operation is safer and more stable; stepless speed regulation can be realized by driving a front axle through a hydraulic motor; the working efficiency is increased; and simultaneously, the small self-propelled alfalfa cradling and flattening machine has wider practicability.

The invention provides a method adopting air flow grading for spherical and spheroid micro-order-particle-diameter metal powder so as to achieve the effect that particle dispersity is high, the particle diameter distribution consistency is high, and secondary pollution is avoided. The method mainly comprises the following main steps that 1, a selective high-pressure gas source is utilized to accelerate materials; and 2, air flow grading and collecting are conducted. According to the crushing and dispersing method, the dispersity and particle-diameter consistency of different metal particle products can be greatly improved, ultra-micro-fine (the average particle diameter is smaller than 0.1 [mu]m) and ultra-large irregular metal particles (the average particle diameter is larger than 10 [mu]m) are effectively removed, particularly the high-pressure gas source is utilized to serve as material conveying power and used for air flow returning in a grading system, secondary pollution of an equipment body and the environment in the treatment process to the products can be effectively avoided, and thus the metal powder products completely meet production of high-end conductive slurry and 3D printing materials.

The invention provides a gas-phase naphthalene feeder of a phthalic anhydride device. The gas-phase naphthalene feeder of the phthalic anhydride device comprises a feeding pipe (1), an outer sleeve (2) and a Venturi mixer (3); the outer sleeve (2) is fixedly connected onto the outer wall of the Venturi mixer (3); the feeding pipe (1) is sleeved in the outer sleeve (2), and one end the feeding pipe(1) stretches out of the outer sleeve (2) and enters the Venturi mixer (3); the end portion of one end, located in the Venturi mixer (3), of the feeding pipe (1) is sealed; long-strip holes (4) are formed in a part, located in the Venturi mixer (3), of the feeding pipe (1); the openings of the long-strip holes (4) face towards the low-pressure area of the Venturi mixer (3). According to the gas-phase naphthalene feeder of the phthalic anhydride device, uniform mixing of gas-phase naphthalene and air can be ensured; the reaction efficiency can be improved while the stability and safety of an oxidation reaction are improved; the product quality is improved; the oxidation yield is improved.

The invention discloses a method for producing needle coke with a combined process. The content of the method is as follows: light distillate oil and heavy distillate oil are fractionated from raw oil through a vacuum distillation device, and the heavy distillate oil goes out of the device. Hydrogen treatment device, the liquid phase product obtained after hydroprocessing passes through the fractionation device to at least separate hydrogenated light distillate oil and hydrogenated heavy distillate oil, and the hydrogenated heavy distillate oil is used as the material for forming the mesophase to be heated by the heating furnace a and then enters the coke tower , the coking gas generated by the coke tower passes through the coking fractionation tower to obtain coker wax oil, which is mixed with hydrogenated light distillate oil as a coke pulling material, heated by heating furnace b, and then enters the coke tower, and the coke tower completes the stages of mesophase formation and Needle focus is obtained after the focus pull stage. The method can continuously produce high-quality needle coke with stable performance.

The invention discloses a small self-propelled alfalfa cradling and flattening machine, belonging to the technical field of agricultural machinery. The small self-propelled alfalfa cradling and flattening machine is mainly composed of a working device, a hydraulic lifting device, an operation system, a power and transmission system and a travelling system; the working device, the hydraulic lifting device and the operation system are arranged at the front part of the machine; the power and transmission system and the travelling system are arranged at the middle rear part of the machine; one end of the hydraulic lifting device is connected with the working device, and the other end of the hydraulic lifting device is connected with the machine frame; and the power and transmission system is connected with the operation system and the travelling system through the hydraulic device, gear transmission and a transmission part. The small self-propelled alfalfa cradling and flattening machine is designed for flattening and paving alfalfas into fluffy swathes while cradling alfalfas aiming at alfalfa obtaining works in small lands, such as hills, mountainous regions and the like; a cradling table device and a flattening device are connected by adopting a frame type structure, unparallel four-connecting-rod lifting mechanisms are adopted, and when the machine climbs, a cradling table can be lifted without influencing stability of the whole machine, so that operation is safer and more stable; stepless speed regulation can be realized by driving a front axle through a hydraulic motor; the working efficiency is increased; and simultaneously, the small self-propelled alfalfa cradling and flattening machine has wider practicability.

The invention discloses an integrated multi-parameter test platform for microbes. The integrated multi-parameter test platform is mainly applied to the qualitative and quantitative detection on the microbes in a liquid. The test platform comprises a high-accuracy plunger type trace sampling pump, a microfluidic chip, a microscopic lens, a microscopic high spectrometer, a computer, a fiber spectrometer and a dielectric spectrometer, wherein the high-accuracy plunger type trace sampling pump can be used for accurately controlling the sampling of a microbial test solution. According to the platform, information acquisition of microscopic images of the microbes in the liquid can be realized, meanwhile, spectral characteristic information and dielectric property information on the microbes can be acquired, and the synchronous acquisition of multivariate information on the microbes is realized, so that the synchronous acquisition of the multivariate information on the microbes is realized, the efficiency of detection is increased, and the accuracy of detection is improved.

The invention discloses a method for producing carbon materials. The content of the method is as follows: a raw material oil is mixed with a certain proportion of vacuum residue oil, and then light distillate oil, middle distillate oil and tower bottom tail oil are separated through a vacuum distillation device. The tail oil goes out of the device, and the decompressed middle distillate oil enters the hydrotreating device, and the liquid phase product obtained after hydrotreating passes through the fractionating device to separate at least hydrogenated light distillate oil and hydrogenated heavy distillate oil, and hydrogenated heavy distillate oil After being mixed with the vacuum distillation light distillate oil, it is used as an intermediate phase material to be heated by the heating furnace a and then enters the coke tower, and the coking gas generated by the coke tower passes through the coking fractionation tower to obtain coked wax oil, and the coked wax oil is combined with the hydrogenation The light distillate oil is mixed as the coke pulling material, heated by the heating furnace b, and then enters the coke tower, and the coke tower completes the mesophase formation stage and the coke pulling stage in turn to obtain needle coke. The method can continuously produce high-quality high-end carbon materials with stable performance.

The invention discloses a system and a method for pulverizing powder. Among them, the powder crushing system includes: a control device, a silo, a powder conveying device, a feeding steam conveying device, a pulverizing steam conveying device, an organic coating agent conveying device and an air powder machine. The system inputs the feeding amount, the mass ratio of the feeding steam to the powder feeding amount, the mass ratio of the organic coating agent to the powder feeding amount, and the quality difference between the feeding steam and the pulverizing steam through the input module. The amount of powder feeding automatically adjusts the feeding flow of feeding steam, pulverizing steam and organic coating agent, thus realizing automatic feeding of the air powder machine, the feeding amount of the air powder machine is stable, and the pressure difference of the silo is low. Therefore, the gas powder machine of the system has good feeding stability and long service life, and the fine powder material prepared has high output, good quality and low production cost.

The invention discloses a ball material feeding device of a ferrite pre-sintering rotary kiln. A ball material storing mechanism, a material receiving mechanism, a discharging pipeline and a feeding controller are included; the material receiving mechanism comprises a connection screw, a bottom plate and a feeding cylinder; the upper end of the discharging pipeline is connected with a discharginghole formed in the bottom plate, and the lower end of the discharging pipeline stretches into a rotary heating pipe of the rotary kiln; and the feeding controller comprises a cycle timer and an electromagnetic valve, and the feeding controller is electrically connected with the feeding cylinder. Due to the above manner, the ball material feeding device of the ferrite pre-sintering rotary kiln is reasonable and compact in overall structure; a full-automatic control manner is achieved through the feeding controller; and the feeding process is not affected by the ball diameter or the ball type, and ball materials are not extruded or broken, either.

The invention discloses a magnesium oxide neutralization system and method for the acid-making acid wastewater of smelting flue gas, and belongs to the technical field of chemical engineering. The system mainly includes an acid water buffer tank, a magnesium oxide storage tank, a charging storage tank, a vertical spiral conveyor, a horizontal spiral conveyor, a hopper, a nitrogen purging device, an ejector and an acid water reaction tank; through the boosting function of the vertical and horizontal spiral conveyors, the nitrogen purging function, and the negative pressure absorbing function ofthe ejector, magnesium oxide powder is conveyed into the ejector, is mixed with the acid wastewater fully, and then enters into the acid water reaction tank. According to the magnesium oxide neutralization system and method, magnesium oxide solid powder is separated at the front end of the ejector, and it is avoided that the acid wastewater enters into the hopper to cause the magnesium oxide powder to be damped to cause blocking; therefore, the continuous and stable operation of the acid wastewater treatment system is ensured.

The present invention provides a system and method for regulating the feeding amount of a combine harvester. The regulating system includes IMU1, IMU2, a pressure sensor, a GPS receiver and a controller. The current feeding amount is within the rated range to maintain the header height and harvest The operating speed of the machine remains unchanged. When the feeding amount is not within the rated range, the IMU detects the posture of the vehicle body and the tilting conveyor of the header, and combines it to obtain the height of the header and the corresponding current hydraulic cylinder position at this height. By presetting the expected header Height, the obtained expected header hydraulic cylinder position, based on the error between the expected header hydraulic cylinder position and the current hydraulic cylinder position, and then through the controller to adjust the proportional valve to drive the hydraulic cylinder to expand and contract, to control the header height to stabilize at the expected position; based on the speed change , the controller controls the hydraulic motor speed by adjusting the flow valve, and then stabilizes the value of the vehicle speed after the change. The height and forward speed of the combined harvesting unit of the present invention maintain a stable feeding amount and high operating efficiency.

The invention discloses a method and device for controlling feeding blocking of an ore grinding chamber in the ore grinding process. The method comprises the steps that the controlled standard vibration frequency of current feeding is determined according to the current actual feeding quantity in the ore grinding process; whether the actual feeding quantity and the standard vibration frequency in the last abnormal judging period satisfy the feeding blocking condition or not is judged, if the answer is positive, a current adjusting coefficient of each ore grinding chamber is increased according to a preset correcting value and the current adjusting coefficient of each ore grinding chamber is determined again, and if the answer is negative, the current adjusting coefficient of each ore grinding chamber remains unchanged; the arithmetic product of the current adjusting coefficient of each ore grinding chamber and the standard vibration frequency is determined to serve as the target vibrating frequency of a vibrating ore feeder of each ore grinding chamber. According to the technical scheme, the actual feeding quantity can be rapidly adjusted to the control feeding quantity, so that the feeding quantity of each ore grinding chamber is even and accurate and granularity of ground ore is indirectly made to be stable.

The invention provides a biomass powder feeder. A conveying device drives a screw auger through a speed reducing motor in a direct connection mode. The biomass powder feeder is characterized in that: a round hole is formed at the center of the bottom of a material cylinder; a connecting cylinder is vertical to the screw auger, and the bottom of the connecting cylinder is communicated with the screw auger; a bearing sleeve is arranged at the center of a support disc which is fixedly mounted at the top end of the connecting cylinder; the support disc is located on the baring sleeve, and blanking holes are uniformly distributed around the bearing sleeve; the upper end of a rotary shaft is fixedly connected with the output end of a speed regulating motor, and the lower end of the rotary shaftpasses through the round hole to be inserted into the bearing sleeve; the rotary shaft is provided with a conical material blocking cylinder above the round hole; the diameter of the bottom surface of the conical material blocking cylinder is greater than the diameter of the round hole; multiple scraping plates are fixedly mounted on the rotary shaft below the conical material blocking cylinder; the rotation diameter of each scraping plate is slightly less than the diameter of the material cylinder, and a certain clearance is reserved between the bottom side and the cylinder bottom; and the rated output of the screw auger is greater than the quantity of feed entering the connecting cylinder from the blanking holes. The biomass powder feeder provided by the invention takes biomass as a feeding object, realizes uniform and stable feeding, and has the advantages of simple structure, small volume and excellent working performance.

The invention discloses a uniform feeding device, which comprises a feed pipe, a casing, a discharge pipe, a feeder, a driving mechanism, and a support plate. A proximity sensor is arranged on the upper part of the inner wall of the feed pipe, and the side of the casing is provided with Support, the lower part of the support is equipped with a pressure sensor, the discharge pipe and the inside of the shell are connected through a plurality of shunt pipes, the feeder includes a pusher arc plate, a bottom plate, an inner seal ring, and an outer seal ring. The drive mechanism includes a deceleration A motor, a bearing assembly, and a drive shaft. The geared motor is installed on the inner lower part of the fixed sleeve, and the geared motor is connected to drive the drive shaft to rotate. The middle part of the transmission shaft is connected with the bearing inner hole of the bearing assembly, the bearing assembly is installed in the fixed sleeve, the top of the transmission shaft is fixedly connected with the feeder and drives the feeder to rotate; the speed of the geared motor is controlled by the controller, and the The support plate is ring-shaped, and the vertical support is internally connected with the fixed sleeve and externally connected with the housing. The invention can not only realize the wind-locking effect of materials, but also can evenly feed materials.

The invention discloses a combined process method for producing high-end graphite materials. Light distillate oil, middle distillate oil and heavy distillate oil are fractionated from raw oil through a raw material oil fractionation tower, and the middle distillate oil enters a hydrotreating device for hydrogenation treatment. The obtained liquid phase product is used as the material for forming the mesophase to be heated by the heating furnace a and then enters the coke tower. The coking gas generated by the coke tower passes through the coking fractionation tower to obtain coker wax oil, which is the light distillate separated from the coke gas oil and the raw oil fractionation tower Mixed as the coke pulling material, it is heated by the heating furnace b and then enters the coke tower, and the coke tower completes the mesophase formation stage and the coke pulling stage in turn to obtain high-end graphite materials. The high-end graphite material produced continuously by the method has the advantages of stable streamlined texture, low thermal expansion coefficient, etc., and is suitable for producing ultra-high power graphite electrodes.

The invention discloses a straw chopper. The straw chopper is characterized by comprising a frame (4), a crushing motor (5) is arranged below the frame (4) and drives a movable cutter (7) to rotate through a belt pulley (6), movable cutter heads (8) are arranged on the movable cutter (7), a rotating speed reducer (10) is arranged on the frame (4) and drives a rotary hopper (1) to rotate through a sprocket (9) and a rack (2), an inner port of the rotary hopper (1) serves as a feed inlet (13), rollers (3) are arranged at the outer bottom end of the rotary hopper (1) and rotate on a round rail (12) on the frame (4), and a shifting shaft (11) is arranged on the rotary hopper (1) and corresponds to the feed inlet (13) which corresponds to the movable cutter heads (8) in position. Crushed straw fibers are separated by the aid of a hammering crushing technology and are uniform in particle size and more beneficial to growth of funguses, straw crushing efficiency is improved greatly, and the straw chopper is applicable and efficient.