63results about How to "Avoid clogging failure" patented technology

The invention provides an intelligent control system and a control method for a scraper conveyer, which belong to the intelligent control systems for coal mine exploitation. The intelligent control system for the scraper conveyer comprises a laser scanning ranging device, a ray ranging transmitter, an ultrasonic level sensor, a current transducer, a master controller, a variable frequency and speed regulation controller, a coal crushing controller, a conveyor gesture controller and a conveyor chain stretching controller, wherein the laser scanning ranging device, the ray ranging transmitter, the ultrasonic level sensor and the current transducer transmit detection signals to the master controller in a wireless communication manner, and the master controller sends control instructions to the variable frequency and speed regulation controller, the coal crushing controller, the conveyor gesture controller and the conveyor chain stretching controller in the wireless communication manner. The running state of the scraper conveyer is mastered at any time and corresponding devices are controlled timely through monitoring of the laser scanning ranging device, the ray ranging transmitter, the ultrasonic level sensor and the current transducer, so that the scraper conveyer can be operated in an optimum running state.

The invention relates to a precaution and alarming method for preventing a combined harvester threshing cylinder from plugging fault. In the method, two Hall sensors are used, one sensor is arranged on a belt pulley of an output power shaft, and the other sensor is arranged on an input power belt pulley of the threshing cylinder; transient impulse cycles of upper wave of the two wheels are synchronously measured to extract a first order difference, a second order difference, a relative speed ratio, a slip ratio, difference cumulative sum to as plugging fault portent characteristic quantity of transient impulse cycle; priority and weight are endowed on the characteristic quantity according to the contribution in identifying plugging fault; the three decisions of normal operation, plugging precaution and alarming are made on the premise of combining the plugging default portent characteristic standard model bank with judgment rules; sound and light are used for prompting the driver to carry out correct measurement in time. The invention has the advantages of automatically adapting to the forwarding speed and change of feeding quantity of the harvester, thus effectively preventing the combined harvester from plugging default to improve intelligent level and harvesting efficiency of the combined harvester and reduce loss caused by plugging.

The invention discloses an intelligent control system for a cotton picker. The system uses a microcomputer controller PC104 and an image-text display for monitoring and controlling the cotton picker. The human-computer interaction interface of the system is complied with LabView. The system comprises the microcomputer controller PC104 (1), an automatic row aligning subsystem (2) of the cotton picker, an online cotton yield predicting subsystem (3), an automatic control subsystem (4) for controlling travelling speed of the cotton picker, a parameter detecting and state monitoring subsystem (5) of the cotton picker, the image-text display (6) and a CAN (controller area network) bus (7). The controller (1) receives data transmitted by the automatic row aligning subsystem (2), the online cotton yield predicting subsystem (3), the automatic control subsystem (4), the parameter detecting and state monitoring subsystem (5) and the like through the CAN bus (7), and control of the cotton picker is achieved through data processing or boundary condition comparison. By the system, intelligence of the cotton picker is improved, especially control of state parameter monitoring, automatic row aligning, online yield predicting, travelling speed of the cotton picker is improved, and accordingly optimal control of the cotton picker is achieved.

The invention discloses a blood separating gel. The blood separating gel is prepared by uniformly mixing the following components in part by mass: 5-20 parts of SEBS, 20-60 parts of white oil, 15-60 parts of diethylhexyl phthalate, 1-20 parts of hydrophobic nano-silica and 0.5-5 parts of hydrophilic nano-silica, and the density of the separating gel is 1.030-1.075 g/cm<3> at 25 DEG C. The invention also provides a preparation method of the blood separating gel. The separating gel disclosed by the invention is stable, is convenient to use, has favorable thixotropy, is easy in centrifugation and good in separating effect, not only can bear irradiation sterilization of Gamma rays but also is insoluble in blood plasma or blood serum to interfere detection results, and causes less influence to the environment during medical waste incineration. The preparation method provided by the invention is simple, and is short in production period, high in efficiency, mature in process, easy to control and convenient to popularize.

The invention belongs to a wet material granulation principle and an equipment combination process, and particularly relates to a combined-type granulator. The combined-type granulator comprises a plurality of layers of combined box bodies, a temporary storage feed bin and a plurality of layers and groups of roller mills. Each group of roller mills is equipped with a rotary joint, a cleaning blade, an elastic stripping frame, a material baffle and a guide plate; a waste gas emptying interface is also arranged on each of the box bodies, and an air inlet at a lowest layer of the granulator is arranged on a bracket. The linear velocity of a tooth surface and the flow rate of volume of a rotary drum of each of the roller mills at a second layer are higher than those of a rotary drum of each of the roller mills at a first layer, and the linear velocity of a tooth surface and the flow rate of volume of a rotary drum with a reticular tooth socket or a single radial tooth socket of each of the roller mills at an adjacent lower layer are designed according to the volume properties of materials in the area. According to the granulator disclosed by the invention, hard foreign matters can be stripped, and simple granulation of soft materials in a cream state, a paste state, a slurry state and the like can be realized; meanwhile, caky and blocky materials can be pulled into monomer granules, soft and hard materials can simultaneously enter into the granulator, and granules at an outlet have a plurality of pores and are in an irregular shape.

The invention discloses a selective catalytic reduction (SCR) metering injection pump urea crystal dissolving device which comprises a pump body and a mixing cavity installed inside the pump body, the side wall of the mixing cavity is provided with an orifice, the pump body is further provided with a flow guide pipeline, at least one chamber is formed inside the pump body, the chamber is communicated with the orifice, one end of the flow guide pipeline is communicated with fluid, and the other end of the flow guide pipeline is communicated with the chamber. The SCR metering injection pump urea crystal dissolving device is simple in structure and ingenious in design, and only purified water is required to be injected into the flow guide pipeline to dissolve reducing agent crystal inside the pump body. Meanwhile, dirt inside the SCR metering injection pump urea crystal dissolving device can be washed away, atomized reducing agents are prevented from diffusing into an air cylinder cavity to cause blocking faults of the pump body, and maintenance is convenient.

The invention discloses an air filter with a dust exhaust hole. The air filter comprises a shell and an upper cover, wherein one end of the shell is provided with an opening used for placing a filter element; the outer wall of the end provided with the opening is provided with two symmetrical air inlets; the other end of the shell is provided with a mounting hole connected with a diesel air inlet pipe, and the dust exhaust hole; a mounting groove used for containing the filter element is arranged in the end provided with the opening; the upper cover covers the end, which is provided with the opening, of the shell, and is locked by a locking mechanism; the inner side of the upper cover is provided with an air guide screen which enables air entering the air filter to form spiral airflow; a space jointly formed by the upper cover and the shell performs a filter element fixing function. Air which enters the air filter of the single cylinder diesel is preliminarily filtered to reduce fine particles contained in air entering an air cylinder and avoid the blockage and the failure of the filter element of the air filter of the diesel as much as possible.

The invention relates to a waste-free environment-friendly recovery method for copper-containing difficult-to-treat materials, which comprises the following steps of: crushing the materials, grinding into ore pulp, and filtering to obtain ore grinding filter residues and ore grinding filtrate; carrying out low-acid iron leaching on the ore grinding filter residues, filtering to obtain low-acid leaching filter residues and low-acid leaching filtrate, recycling the ore grinding filtrate, neutralizing to be neutral by using acid waste liquid when the alkali concentration and impurities rise, and filtering to return to ore grinding for use; carrying out oxidation iron precipitation on the low-leaching filtrate, neutralizing until the pH value is 3-5, blowing compressed air at the temperature of 80-85 DEG C to oxidize low-valent iron ions so as to form iron colloidal precipitate, filtering to obtain neutralized purified liquid and neutralized iron precipitation slag, returning the neutralized purified liquid to low-acid iron leaching operation, and returning the neutralized iron precipitation slag to lead smelting and slagging; carrying out high-temperature high-acid oxygen pressure leaching on the low-leaching filter residues, and filtering to obtain high-leaching filtrate and high-leaching filter residues; cooling and saturating the high-leaching filtrate to separate out a copper sulfate crystal product, and feeding high-leaching filter residues to lead for smelting to recover lead and silver. The method is easy to operate, treats waste with waste, is low in cost, and efficiently recycles valuable metal in an environment-friendly manner without three wastes.

The invention discloses a connecting rod-ball valve type hydraulic damping device for a vehicle, which belongs to the technical field of hydraulic damping devices for vehicles. The technical problem to be solved is to provide the connecting rod-ball valve type hydraulic damping device in which a throttle valve is arranged on a connecting rod. The technical scheme for solving the technical problem is that: the device comprises an outer cylinder, an inner cylinder, a piston connecting rod, an end cover of the outer cylinder and the throttle valve, wherein a left end of the outer cylinder is closed, while a right end is provided with the end cover of the outer cylinder which can be detached from the outer cylinder; a left end of the inner cylinder is open, the inner cylinder is arranged in the outer cylinder, a right end of the inner cylinder is arranged on the end cover of the outer cylinder, and a damping fluid is contained between the outer cylinder and the inner cylinder; the throttle valve comprises a valve body, a piston ring, a ball valve core, a spring and a spring seat, wherein the outside diameter of the valve body is slightly less than the inside diameter of the inner cylinder, the valve body is provided with a two-step hole, a left section hole of the two-step hole is a main oil hole, while a right section hole is the ball valve core hole; and the ball valve core, the spring and the spring seat are arranged in the ball valve core hole. The connecting rod-ball valve hydraulic damping device for the vehicle is used for the damping of the vehicle. The device has the advantages of avoiding the blockage fault of the main oil hole caused by the deformation of a valve plate, improving the working reliability of the damping device, and prolonging the service life of the damping device.

The invention discloses a water plugging seepage-proofing method for a recharge well. The method includes the steps that firstly, a steel disc ring is premade, and a clamping groove is welded on a well casing in advance; a rubber balloon is placed in the clamping groove and pressurized, so that the clamping groove is filled with the rubber balloon, a sediment tube of the recharge well, a filter and the well casing are connected in a butt joint mode, fixed and then submerged in a well hole, and a gravel filter layer and a clay ball water resisting layer are constructed; the well casing is sleeved with the steel disc ring, the steel disc ring is submerged to the well hole, when the reading number of a pressure measuring instrument is synchronously increased along with the submergence of the steel disc ring, deflation and pressure reduction are conducted on the rubber balloon, the steel disc ring is quickly submerged until the steel disc ring can not continue submerging, the lower portion of the steel disc ring is pressed in the clamping groove, the rubber balloon is extruded in the gap between the clamping groove and the steel disc ring, and eventually a concrete water plugging layer is constructed. According to the method, plugging failure of the filter layer caused by inevitable well casing disturbance in the well completion construction process and recharge water upwelling in the running process of the recharge well can be effectively avoided, even inclination of the well casing can be reduced or avoided, and by the cooperation of other recharge water preprocessing measures, eventually normal working of the recharge well can be guaranteed.

The invention discloses an undersea drilling rig mud circulation system and method, and relates to the technical field of deep-water drilling equipment. The undersea drilling rig mud circulation system comprises an auxiliary ship, an umbilical cord cable, a coiled tubing tensioning section, a coiled tubing mud input pipeline, an undersea mud treatment device, a wellhead mud recovery pipeline, coiled tubing, a wellhead device, an undersea drilling rig base, an injection head and a derrick; one end of the umbilical cord cable is connected with the auxiliary ship, and the other end of the umbilical cord cable is connected with the undersea mud treatment device for providing a channel for injecting mud into the seafloor and returning the mud to the auxiliary ship; and the undersea mud treatment device is used for outputting the mud injected from the umbilical cord cable to the coiled tubing mud input pipeline, filtering the mud returned from the wellhead mud recovery pipeline, and then outputting the mud to the auxiliary ship through the umbilical cord cable. The undersea drilling rig mud circulation system and method have the advantages that the conveying distance is long, and the service life is long.

The invention provides a diesel vehicle DPF pre-diagnosis system and method, and relates to the technical field of DPF pre-diagnosis. The diesel vehicle DPF pre-diagnosis system comprises a remote vehicle-mounted terminal, a vehicle networking cloud platform, a mobile terminal, an ECU and a WEB terminal, the vehicle networking cloud platform communicates with the mobile terminal through TCP/IP, the WEB terminal communicates with the vehicle networking cloud platform through TCP/IP, the vehicle networking cloud platform communicates with the remote vehicle-mounted terminal through 4G/5G, and the ECU communicates with the remote vehicle-mounted terminal through CAN. According to the diesel vehicle DPF pre-diagnosis system and the method, oil consumption and emission deterioration caused by large-degree blockage of the DPF can be avoided, DPF burnout or corresponding serious faults caused by DPF blockage and OBD fault missing report can be avoided, the consistency of the DPF can be evaluated, DPF batch accidents can be avoided, early warning and driver guidance can be performed in advance, and DPF blockage faults can be avoided.

The invention discloses a positive and reverse rotation control system of a green fodder feeding roller, belonging to the technical field of agricultural machinery control. The positive and reverse rotation control system of the green fodder feeding roller is characterized by comprising an ARM controller (1), a signal conditioning module B (2), a signal conditioning module A (3), a display module (4), a failure warning module (5), a driving module A (6), a driving module B (7), a clutch control switch (8), a feeding roller control handle (9), a signal conditioning module C (10), a clutch output rotational speed sensor (11), an engine rotational speed sensor (12), a feeding roller rotational speed sensor (13), a driving motor (14), a feeding roller (15), an electromagnetic valve (16) and a clutch (17). Compared with the prior art, the inventive system has the advantages of simple structure, convenient installation and debugging, high reliability, high measurement accuracy, low power consumption, easy popularization and promotion, and convenient maintenance.

The invention discloses a seed discharging device allowing clay to be conveniently removed and used for a seeder. The seed discharging device comprises a seeder seed storage box, a seeder seed discharging structure, a mixing structure, a clay removing adjusting structure, a first protective plate, a second protective plate and a clay removing structure, the seeder seed storage box is installed onthe seeder, an inclined guiding plate is integrally arranged at the bottom of the seeder seed storage box, the first protective plate is integrally arranged on the part, on one side of the seeder seedstorage box, of the inclined guiding plate, and the second protective plate is integrally arranged on the part, on the other side of the seeder seed storage box, of the inclined guiding plate. The seed discharging device is reasonable and simple in structure and convenient to use; the labor intensity of a seeding worker is effectively lowered, farming efficiency is improved, during seeding, clayremoving treatment is conducted on a seeder seed discharging rotary disc, cleanliness of the seeder seed discharging rotary disc is guaranteed, it is avoided that soil adheres to the seeder seed discharging rotary disc, a seed discharging device is blocked, and the effect of removing clay is guaranteed.

The invention discloses a floor drain with anti-plugging, anti-backflow, water seal and an insert-and-pull installation structure. The floor drain mainly includes a water collecting tank and a drainage pipe installed in a middle hole of the water collecting tank; the bottom of the drainage pipe is fixedly connected with a water storage cap with an opening upwards, and the water storage cap communicates with the lower part of the drainage pipe; an annular cover plate is connected with the drainage pipe located at the upper end port of the water storage cap in a sleeving mode; the annular coverplate can cover the upper end port of the water storage space precisely under the actions of no water pressure and self-weight or self-elasticity; and under the action of the water pressure, the jointpart of the annular cover plate and the water storage space is opened to enable water to flow out. The floor drain with anti-plugging, anti-backflow, water seal and an insert-and-pull installation structure has the advantages of plugging and back-irrigation proofing, good water sealing effect, simple structure, and easy installation and maintenance.

The invention discloses an active high-flow drainage device. The active high-flow drainage device comprises a water collecting tank, a filter screen in the water collecting tank, and a control circuit. A high-water-level contact switch and a low-water-level contact switch are arranged at the upper end and the lower end of the side wall of the water collecting tank respectively; a water outlet of the water collecting tank is communicated with a water inlet of a pneumatic-and-hydraulic mixing cylinder through a pipeline; the air-and-hydraulic mixing cylinder is divided into a pneumatic cylinder on the left side and a hydraulic cylinder on the right side, and a pneumatic piston and a hydraulic piston are connected to the same piston rod; a drainage outlet is formed in the lower side of the right end of the hydraulic cylinder. Pneumatic power is fed into the pneumatic cylinder, and the pneumatic piston drives the hydraulic piston to carry out reciprocating motion so that water suction and drainage operation can be carried out. According to the active high-flow drainage device, slag can be efficiently filtered out, stable high-flow drainage operation can be carried out, automatic drainage operation can be actively carried out, drainage efficiency is improved, the slag is effectively filtered out, blocking failures are avoided, small waste slag can be drained in a forced mode, and the maintenance and cleaning frequency is reduced.

The invention discloses a method for preparing disodium hydrogen phosphate from a glyphosate mother liquor by using an ECO technology, and belongs to the field of chemical engineering production. Themethod comprises the following steps: (1) adjusting the pH value of the glyphosate mother liquor, and adding the adjusted mother liquor into an MVR evaporator; (2) completely transferring the obtainedmaterial into a crystallization kettle, and carrying out normal pressure crystallization; (3) carrying out solid-liquid separation after the material is crystallized; (4) carrying out normal pressuredegradation in a catalytic degradation tower; (5) carrying out heat exchange on the degraded wastewater to cool the wastewater to room temperature, transferring the cooled wastewater into an extraction tank, carrying out cooling and crystallization, pumping the obtained crystallized extract into a two-in-one filter press, and filtering the crystallized extract; and (6) washing the filtered solidwith water two times, discharging the washed solid, and packaging the solid for sale. The MVR evaporator is used to carry out concentration, so the purity of the product is ensured; and the electrocatalytic oxidation technology is used to catalytically degrade the glyphosate wastewater, so the disodium hydrogen phosphate can be obtained, the phosphorus resource and the salt resource can be recovered, and the cost is saved.