1459 results about "Metering pump" patented technology

The invention relates to the technical field of metering pumps, in particular to an external meshing gear metering pump flow calculation method based on linear regression and curve fitting, which comprises the following steps: generating an integrated data set by monitoring the flow rate, pressure, temperature and viscosity in real time, setting flow rate, pressure and temperature thresholds based on the data set, judging the flow state and recording abnormity, and calculating the flow rate of the external meshing gear metering pump. Flow velocity and viscosity are selected for flow calculation, a corrected flow value is generated, whether flow is normal or not is analyzed and determined, a flow stability evaluation result is generated, and a visual interface is created to display parameters and a calculation result. According to the method, the multiple sensors are installed at the inlet and the outlet of the metering pump, the flow speed, the pressure, the temperature and the viscosity are monitored in real time, an integrated data set provides a precise basis for flow calculation, a threshold value is set, data are monitored, it is ensured that parameters exceeding the normal range can be recorded and analyzed in time, and the process improves the accuracy of flow calculation and improves the working efficiency. And flow evaluation is optimized, and the operation safety and efficiency are improved.

The invention discloses an intelligent detection and dynamic supplement regulation and control system for electroplating bath solution components, and belongs to the technical field of electroplating. The system comprises an electroplating bath body, a detection module, a data processing and control module and a regulation and control module. The detection module is used for detecting the metal ion concentration, the pH value, the temperature and the additive concentration of the bath solution on line in real time through a spectrum sensor, an electrochemical sensor and a physical parameter sensor; the data processing and control module adopts a PID and machine learning fused intelligent regulation and control model, predicts the component change trend according to the detection data and the process parameters, and generates a dynamic regulation and control instruction; the regulation and control module quantitatively supplements target components through a high-precision metering pump, and the closed-loop feedback correction module is combined to ensure that the components of the bath solution are stabilized within a preset threshold range. Multi-parameter synchronous detection and accurate regulation and control are achieved, the quality stability of the plating layer is improved, raw material consumption and labor cost are reduced, and the method can be widely applied to industrial scenes such as metal surface treatment.

The invention discloses a deep sea underwater integrated electro-hydraulic actuator system adopting pump and valve combination. The deep sea underwater integrated electro-hydraulic actuator system comprises a hydraulic cylinder, a pump control assembly and a valve control assembly. The pump control assembly comprises a metering pump, a first switch valve and a second switch valve; the valve control assembly comprises a large-flow proportional valve, a small-flow proportional valve, a deep sea compensation energy accumulator and a third switch valve. The metering pump, the first switch valve and a rod cavity of the hydraulic cylinder are sequentially connected through a pipeline, the metering pump, the second switch valve and a rodless cavity of the hydraulic cylinder are sequentially connected through a pipeline, the metering pump, the third switch valve and the deep sea compensation energy accumulator are sequentially connected through a pipeline, and the rodless cavity of the hydraulic cylinder is connected with the large-flow proportional valve and the small-flow proportional valve through pipelines. Two control modes of the actuator can be completed, large-flow control is achieved through the pump control assembly, high efficiency and energy conservation are achieved, flow needed by maintenance is supplied to a rodless cavity of the actuator through the valve control assembly via the large-flow proportional valve and the small-flow proportional valve, and posture keeping and emergency action are achieved.

The invention relates to the technical field of engineering machinery, and particularly discloses an electrically-driven metering pump load-sensitive system, a control method and engineering machinery, the electrically-driven metering pump load-sensitive system comprises a control unit, a driving motor assembly, a metering pump, a pilot hydraulic control unit, a pilot handle assembly, a load-sensitive valve assembly, an actuator assembly, a sensor assembly and a pressure difference control module; the driving motor drives the metering pump to supply oil to the load-sensitive valve assembly so as to drive the actuator assembly to operate; the control unit receives the maximum outlet pressure and the maximum load pressure of the pump collected by the pressure sensor, receives a system target pressure difference signal of the pressure difference control module at the same time, and synchronously controls the rotating speed of the motor and the valve target pressure difference output by the proportional pressure reducing valve. The system aims to solve the problems that a traditional upstream compensation load sensitive system lacks a flow saturation resisting function, and a downstream compensation load sensitive system has extra reversing energy consumption and fixed system pressure difference setting.

The invention belongs to the technical field of purification stations, and particularly discloses an automatic chemical feeding control device for a purification station, which comprises a concentrated chemical tank, a PLC (programmable logic controller), a water tank and a factory, the concentrated chemical tank is provided with a concentrated chemical pipe, the concentrated chemical pipe is provided with a diluted chemical tank, the diluted chemical tank is provided with a water pipe, the water pipe is communicated with the water tank, the diluted chemical tank is provided with a diluted chemical pipe, the diluted chemical pipe is provided with a reaction tank, and the reaction tank is provided with a sewage pipe. The reaction tank is provided with a water outlet pipe, the water outlet pipe is communicated with the plant, the thick pesticide pipe is provided with a pesticide spraying pump, the thin pesticide tank is provided with a liquid level meter, the thick pesticide pipe, the thin pesticide pipe and the water pipe are all provided with electric valves, the thin pesticide pipe is provided with four metering pumps and flow meters, and the sewage pipe and the water outlet pipe are both provided with turbidity meters; through cooperation of the PLC and the electrically operated valve, the proportion of concentrated chemicals and water and the dosage of added chemicals during sewage treatment are flexibly controlled, personal errors are reduced, and the stirring speed is increased through aeration stirring of the chemical liquid through the vacuum pump, so that the problems of personal errors and low stirring speed due to manual chemical adding of an existing purification station are solved.

The invention discloses a full-automatic multi-component dispensing dynamic mixing proportion closed-loop control system, which relates to the technical field of semiconductor manufacturing, and comprises a multi-component feeding module, a dynamic proportioning execution module, an online detection module, an intelligent control module, a mixing reaction module, an anti-pollution module and a data management module, the device has the advantages that anti-sticking conveying and rapid switching of multi-form raw materials are achieved through a plurality of independent flow channels and inner wall diamond-like coatings of the multi-component feeding module in cooperation with a flow channel inlet vibrating screen and an outlet electromagnetic valve, a double-metering-pump parallel structure and a double-axial-flow type pulse damper are adopted in the dynamic matching execution module, and the dynamic matching efficiency is improved. And by combining a nonlinear model prediction controller of the intelligent control module and BP neural network adaptive compensation, the dynamic adjustment precision of the multi-component mixing ratio is remarkably improved, the mixing uniformity and purity reach the standard, the product scrapping caused by the ratio error is greatly reduced, and the photoresist production yield and stability are improved.

The application discloses a kind of micro flow high pressure hydraulic diaphragm metering pump, including pump head and pump body, diaphragm piece is equipped between the pump head and pump body, pump head, including pump head body, feed valve and discharge valve;Pump body, including pump body and plunger assembly, plunger assembly is driven to diaphragm piece by reciprocating motion, plunger assembly includes cylinder sleeve, cylinder sleeve inside is equipped with plunger cavity, plunger cavity is equipped with plunger in cooperation, at least one oil supplement cavity is equipped in plunger cavity, plunger and cylinder sleeve are also equipped with combined sealing mechanism between it.The application is optimized plunger assembly, utilizes long axis plunger, forms small capacity hydraulic oil cavity, with the rapid reciprocating motion of plunger, can realize the high frequency small scale reciprocating operation of diaphragm piece, is suitable for the transmission of small size gauge medium flow passage in pump head, realizes micro high pressure output.

The invention relates to the technical field of epoxy asphalt batching equipment, discloses an epoxy resin batching device for steel bridge deck pavement and an adding process thereof, solves the technical problems in the prior art, and comprises a storage tank, a metering and weighing system, a conveying system and a central control system, the storage tank comprises a first storage tank A and a second storage tank B; the metering and weighing system comprises a first metering pump a, a second metering pump b and a metering hopper; the conveying system is installed between the metering hopper and a mixing cylinder of a mixing plant and used for providing power to feed and add a mixture in the metering hopper into the mixing cylinder. The conveying system comprises a pneumatic control valve, a conveying pump, a gas-liquid mixer, an electromagnetic valve and a compressed air source. And the central control system is used for controlling the operation of the batching device and controlling the completion of the circulation control period. According to the technical scheme, the novel epoxy resin adding equipment is developed and used for circularly batching, the batching proportion is automatically formed, and the working efficiency is high.

The invention relates, inter alia, to a dosing device (10) for dosing and supplying media (11a, 11b) via fluid lines (12a, 12b, 12c, 14, 12e, 12f, 12g, 12l, 12m, 12n) to at least one target device (13a, 13b, 13c), in particular to a commercial textile washing machine, wherein the dosing device has a switching device (14a, 14b, 14c) which is connected on the input side to a dosing pump (15) and to a rinsing pump (16) or to a rinsing device (90) and on the output side to a target device (13a, 13b, 13c), and which can be addressed by a control (17) of the dosing device (10) to change its switching state, wherein the switching device (14a, 14b, 14c) in a first switching state (18) a communicative connection between the metering pump (15) and the target device (13a, 13b,13c) and in a second switching state (19) provides a communicative connection between the flushing pump (16) or the flushing device (90) and the target device (13a, 13b, 13c).

The invention discloses a swimming pool water quality management system and method based on intelligent regulation and control of residual chlorine concentration, and belongs to the technical field of swimming pool water quality management. According to the system, water quality parameters are monitored in real time at the frequency of one second through residual chlorine, pH, turbidity and water temperature sensors, after filtering processing is conducted through a data acquisition module, the adding amount is dynamically calculated through an intelligent adding algorithm in combination with a preset residual chlorine target range, and then accurate adding is conducted through a high-precision metering pump. Meanwhile, the water quality comprehensive management unit automatically adjusts the pH value to a preset range, and a flocculating agent is regularly added to reduce the content of organic matters. When the residual chlorine concentration is lower than 0.3 mg / L or higher than 1.0 mg / L, early warning is triggered, and all monitoring data, adding records and early warning information are synchronously stored in a local server and a cloud database; water quality real-time monitoring and dynamic accurate regulation can be realized, and safety and stability of water quality of the swimming pool are guaranteed.

The utility model relates to the technical field of filling machines, and particularly discloses a quantitative blanking device for filling, which comprises a case, a quantitative component arranged on the case and used for quantitative blanking, and a positioning component arranged on the case and used for positioning a filled bottle body, the quantifying assembly comprises a quantifying cylinder fixedly installed on the machine box, a metering pump fixedly connected to the quantifying cylinder and a liquid storage box fixedly installed at the liquid inlet end of the metering pump. According to the quantitative blanking device for filling, when liquid is quantitatively filled into a filling bottle by a filling machine, the filled bottle body is automatically clamped and positioned through the positioning assembly, so that the stability of the filling bottle in the filling process is improved, and when the bottle body is clamped, the quantitative blanking device is arranged through the discharging assembly at the lower end of the quantitative cylinder, so that the quantitative blanking effect is improved. And after filling, the blocking piece automatically moves downwards to block the discharging opening in the bottom of the quantitative cylinder, and the filling liquid can be conveniently added into the quantitative cylinder in the follow-up process.

The utility model belongs to the technical field of agricultural unmanned aerial vehicles, and particularly relates to a bionic agricultural pesticide spraying aircraft. Comprising a fuselage and n supporting legs evenly distributed around the fuselage, n is an even number larger than or equal to 4, and each supporting leg is provided with a set of propellers driven by a motor; a plurality of independent pesticide bins are arranged in the machine body, an outlet of each pesticide bin is connected with a mixing box in the machine body through a water path, a metering pump is connected into the water path, a stirring device is arranged in the mixing box, a plurality of nozzles are evenly distributed on the periphery of the machine body, an outlet pipeline of the mixing box is divided into branches with the same number as the nozzles, and the branches are connected with the nozzles in a one-to-one mode. A booster pump is mounted on the branch; depth cameras are distributed outside the fuselage and used for acquiring environment images, and the aircraft controls a flight path according to the environment images; the unmanned aerial vehicle adopts a partitioned pesticide bin and octopus bionic eight-rotor design, and has high pesticide mixing capacity and stable flight control performance.

The invention relates to the technical field of methanol cracking hydrogen production, in particular to a process and a system for methanol cracking hydrogen production. Raw material methanol liquid is conveyed to a heat exchanger from a methanol storage tank through a metering pump and is heated and preheated through heat exchange of the heat exchanger, and the preheated raw material methanol liquid is conveyed into a methanol vaporizer to be vaporized into methanol steam; methanol steam enters a reactor and is catalyzed by a catalyst, a cracking reaction is carried out, high-temperature converted gas of hydrogen and carbon monoxide is generated, the high-temperature converted gas is conveyed to a product end after being subjected to heat exchange and cooling by a heat exchanger, the high-temperature converted gas is used as a heat source to exchange heat with fed methanol, and the converted gas is cooled while the methanol is preheated, so that energy complementation is realized; and the process ensures that methanol is fully vaporized, the temperature of the reactor is controlled at the optimal temperature for direct methanol cracking, and the direct methanol cracking reaction is sufficient and less in side reaction under the catalysis of a copper-based catalyst with high activity and good selectivity.

The invention discloses an intelligent preparation system and process for a composite antibacterial material with synergistic interaction of nanoparticles, and relates to the field of preparation of composite antibacterial materials. The raw material pretreatment module integrates a nano particle purification unit, a base material modification unit and an antibacterial agent dispersion unit, so that the purity and the dispersity are improved; the intelligent proportioning and mixing module consists of a five-channel metering pump, a dynamic mixer and a concentration monitoring device and is used for accurately controlling the component proportion; the reaction synthesis module comprises a constant-temperature reaction kettle, a pressure control system and an inert gas protection unit, and stable reaction is guaranteed; the performance online detection module is used for testing the antibacterial property, the mechanical property and the microstructure; the intelligent regulation and control module optimizes process parameters through an algorithm; the product post-processing module comprises a filtering unit, a drying unit and a sterile packaging unit to ensure the product quality. The antibacterial performance and stability are improved, the antibacterial aging is prolonged, energy consumption is reduced, efficient, green and intelligent preparation of the composite antibacterial material is achieved, and industrial technology upgrading is promoted.

The invention provides a filter stick perfuming device and a perfuming mode. The perfuming device is composed of a heating and heat preservation box, a metering pump, a heat preservation pipe and a perfuming module. The perfuming device can be used for heating and uniformly mixing flavors and fragrances, keeping the flavors and fragrances in a liquid state and certain viscosity, and outputting the flavors and fragrances outwards through micropores in the upper part and the lower part of the perfuming module; when the tows pass through the upper surface and the lower surface of the heating module in a clinging manner, the flavors and fragrances output from the micropores are taken away; blowing the tows to be disordered by compressed air through a high-pressure tow feeder, further uniformly dispersing the flavors and fragrances on the surfaces of the tows, and feeding the tows into a forming smoke gun; and wrapping the tows with forming paper, and slitting to obtain the perfumed filter stick. The perfuming device and the perfuming method can be used for adding flavors and fragrances to the surfaces of tows, and are particularly suitable for adding gel flavors and fragrances and adding flavors and fragrances when hollow pipe filter sticks are produced. A new solution is provided for development of perfumed tobacco products.

A technical solution for monitoring operation of a medical delivery device such as a wearable patch pump for occlusion is provided that employs sensing pump motor current during at least one of a dispense stroke and an aspirate in a pump cycle. The solution can be implemented alone or in combination with other occlusion sensing methods that use one or more of pump measurement data such as pump stroke duration (e.g., duration of aspirate stroke or dispense stroke in a rotational metering-type pump or a reciprocating-type pump), end-stop or limit switch activation, and duration difference between aspirate and dispense strokes to detect occlusion. Accuracy of occlusion detection based on measured data in a fluid delivery device is improved by using dead band normalization of loaded measured data to unloaded measured data.

The invention provides an energy-saving type energy storage power generation device based on methanol fuel, belongs to the technical field of methanol fuel power generation, and solves the technical problems that an existing methanol fuel power generation device is slow in ignition, energy cannot be efficiently utilized, the module integration efficiency is low and the like. Comprising a container, a heat exchange gasifier, a heat exchange heater, a methanol reforming fuel cell module, a methanol storage tank, a gasoline storage tank, a methanol fuel generator assembly, two cell modules and two attenuators are arranged in the container, and a water tank is arranged at the upper end of the methanol storage tank; material conveying metering pumps are arranged between the gasoline storage tank and the methanol fuel generator assembly and between the water tank and the heat exchange vaporizer, a material conveying metering pump is arranged between the methanol storage tank and the heat exchange heater, and a silencer, an engine heat dissipation system and a tail gas treatment assembly are arranged at the upper end of the container. The modular container design facilitates transportation and rapid deployment, is efficient, flexible, energy-saving and environment-friendly, and is provided with a multi-stage tail gas treatment and noise reduction system to ensure environment-friendly and low-noise operation.

A preparation method of the outdoor high-strength polyester fiber with the radiation refrigeration function comprises the following steps that titanium dioxide, silicon dioxide, silicon carbide and zirconium phosphate are blended and ground in proportion and then dispersed in an acetone solution, a dispersing agent is added, and nano-particle dispersion liquid is formed through ultrasonic treatment; mixing the nano-particle dispersion liquid with the polyester chips; feeding the mixed composite material into a screw extruder for melt blending to form a spinning solution; after being accurately metered by a metering pump, the spinning solution is extruded by a spinneret plate to form fiber tows, and the spinneret plate is provided with a slow cooling and heating device; and performing post-treatment on the fiber tows to obtain the high-strength polyester fibers. According to the invention, a specific combination of titanium dioxide, silicon dioxide, silicon carbide and zirconium phosphate is selected, and a specific slow cooling technology and high-power stretching shaping are matched, so that the fiber has excellent radiation refrigeration performance and mechanical strength, and can be widely applied to the fields of outdoor clothing, awning cloth, car clothing and the like.

The invention belongs to the technical field of petroleum and natural gas development, and particularly relates to a visual reservoir core relative permeability high-precision measuring device and method based on an unsteady state method. The device comprises a clamp holder, three glass tubes, a flow drum, a water metering pump, a gas-liquid separation tube, an annular pressure pump, a gas cylinder, an annular pressure sensor, a pressure regulating valve and an injection pressure sensor. The holder comprises a support, a barrel, a pull rod nut assembly, an adjusting screw rod, a restraint frame, an inlet plug, two pressing caps, a baffle ring, a sealing ring, a rock core cone, a transparent rubber sleeve and an outlet plug. The method comprises the following steps: 1, core pretreatment; 2, carrying out liquid measurement on the permeability; 3, displacement pressure is determined; 4, calculating the pore volume of the rock core; and 5, gas-driven water test and dynamic permeability calculation. The problems that reservoir rock core relative permeability measuring equipment is complex, inaccurate and difficult to use, and the stress state of the rock core is not comprehensively simulated are solved.

The utility model relates to a compact thermal insulation liquid metering weightlessness scale. Comprising a base, a support arranged on the base, a material supplementing barrel with an interlayer for supplementing materials, a metering barrel with an interlayer for metering the materials, a weighing platform component for weighing the materials, a heat preservation metering pump for conveying the materials and a mold temperature controller installed on the base. The weighing platform component is mounted on the base; the metering barrel with the interlayer is arranged on the weighing platform component; the interlayer supplementing barrel is mounted at the top end of the bracket; the heat-preservation metering pump is installed on one side of the support. The problems that in the prior art, a common heat preservation liquid metering weightlessness scale is too simple in structure and inaccurate in metering; the technical problems that the structure is too complex, too many connecting pieces exist, the number of leakage points is large, and metering is not accurate are solved.

The present invention discloses a silent electromagnetic plunger metering pump, comprising a pump body, a plunger assembly, and an electromagnetic control device; the electromagnetic control device fixes a positioning ring in a first mounting groove, the electromagnetic control device comprising a moving iron core, a fixed iron core, and an elastic member; the moving iron core is connected to a buffer heat insulation ring; an annular placement groove is provided at one end of the fixed iron core near the moving iron core, a buffer washer protruding from the annular placement groove is provided in the annular placement groove; the elastic member is provided on the outer periphery of the buffer heat insulation ring, and the two ends of the elastic member respectively abut against one end of the buffer heat insulation ring near the plunger movable groove and one end of the electromagnetic control device near the positioning ring. The provision of the annular placement groove can avoid excessively reducing the area of ​​magnetic flux; the buffer washer acts as a buffer and absorbs vibrations when the moving iron core and the fixed iron core are in operation, thereby reducing noise; the position of the elastic member is separated from between the fixed iron core and the moving iron core, thereby ensuring that the magnetic force between the fixed iron core and the moving iron core meets the requirements for overall normal operation; and the structural design is ingenious.

The invention provides a method and a system for accurately controlling liquid flow in a radioactive separation device, and relates to the technical field of liquid flow control, the method comprises the following steps: acquiring instantaneous flow data of a column inlet, pressure data of an infusion pipeline and rotating speed data of a metering pump, and carrying out sliding time window processing to obtain an average flow value and a flow change slope; calculating an equivalent flow resistance coefficient in combination with a pressure change relation and theoretical conveying capacity of a metering pump, and determining liquid flow transmission delay time according to pipeline volume parameters, so as to predict column inlet flow corresponding to the delay time; and the rotating speed of the metering pump is adjusted according to the deviation between the predicted flow and the target flow, the effective buffering volume of the buffering flow stabilizing cavity is adjusted to restrain flow pulsation, meanwhile, control parameters are continuously corrected through rolling updating data, and the column inlet flow is kept within the preset target flow range.

The utility model discloses an ultraviolet light curing lining hose vacuum glue pouring device which comprises a bottom plate, the right side of the top of the bottom plate is fixedly connected with a glue box, the left side of the glue box is fixedly connected with a positioning plate, the left side of the positioning plate is fixedly connected with a concave frame, the top of an inner cavity of the concave frame is fixedly connected with a supporting plate, and the supporting plate is fixedly connected with the bottom plate. According to the glue filling device, the concave frame, the supporting plate, the electric air cylinder and the arc-shaped clamping plate are arranged, the ultraviolet curing lining hose can be clamped and sealed, glue filling can be carried out on the ultraviolet curing lining hose through the sliding barrel, the sliding rod, the guide pipe, the metering pump, the liquid discharging hose, the liquid pumping pipe, the vacuum pump and the air pumping pipe, and meanwhile the vacuum pump and the air pumping pipe are arranged, so that the glue filling efficiency is improved. By means of the structure, the vacuum glue filling equipment has the advantage that vacuum glue filling is convenient when the vacuum glue filling equipment is used, so that the use requirements of customers cannot be met, and the influence on the product quality is avoided.

The invention belongs to the technical field of sodium hypochlorite production, and particularly relates to a method for producing sodium hypochlorite. A method for producing sodium hypochlorite comprises the following steps: adding a compound additive into a sodium hydroxide aqueous solution, and uniformly stirring to obtain a compound alkali-containing raw material solution; respectively introducing the composite alkali-containing raw material solution and chlorine into the micro-channel reactor through a metering pump, and controlling reaction conditions to generate a reaction solution containing sodium hypochlorite; introducing the reaction liquid into a ceramic membrane separation device, separating and removing unreacted solid impurities and by-product salts, and collecting permeate; unreacted sodium hydroxide is recycled and reused; and detecting the permeate liquid to be qualified to obtain a sodium hypochlorite finished product. According to the invention, four key links of compound additive addition, microchannel reaction, ceramic membrane separation and resin recovery are organically linked to form a systematic solution. Aiming at the core pain points of insufficient reaction, more byproducts, raw material waste, equipment corrosion and the like in the traditional process, the product purity is improved through the synergistic effect of all links.

The utility model belongs to the technical field of hot melt adhesive production, and particularly relates to an atomization device and an EVA hot melt adhesive production system with the atomization device.The atomization device comprises an auxiliary solution storage tank, a metering pump, a valve FV and an atomization nozzle; a discharging pipe is arranged in an auxiliary solution storage tank in the atomizing device, the distance between an inlet of the discharging pipe and the bottom of the auxiliary solution storage tank is 5-8 mm, and an outlet of the discharging pipe is sequentially connected with a metering pump, a valve FV and an atomizing nozzle. The EVA hot melt adhesive production system with the atomizing device further comprises a dehydrator and a vibrating screen, and the atomizing nozzle is mounted on a pipeline I between the dehydrator and the vibrating screen. Compared with the EVA hot melt adhesive production system without the atomization device, the EVA hot melt adhesive production system with the atomization device has the advantages that the cleaning time of scale deposit of the pipeline I is relatively prolonged by 0.67-1.00 times, and the time from bagging to hardening of EVA hot melt adhesive particles is relatively prolonged by 3.00-4.90 times.

The invention relates to a low-stress chemical mechanical etching process suitable for fragile materials, which belongs to the technical field of etching processing of fragile materials and comprises a precise chemical mechanical polishing machine, a polishing pad, a polishing solution conveying and managing system and end point detection equipment. The precise chemical mechanical polishing machine comprises a multi-zone pressure controllable polishing head, a high-precision rotating speed control system and a real-time thickness measuring system, a polishing pad is a polishing disc made of porous polyurethane materials, and the polishing liquid conveying and managing system comprises a multi-channel metering pump system and a stirring and temperature control unit. And the end point detection equipment comprises a surface profilometer, an atomic force microscope and a transmission electron microscope. According to the method, through fine cooperation of chemical reaction and mechanical grinding, microcrack initiation and propagation in the polishing process are effectively inhibited, surface and subsurface damage of the fragile material is remarkably reduced, the machined surface which is ultrahigh in smoothness and free of damage is obtained, and meanwhile the high material removal rate is kept.

The invention provides a method and a system for autonomously and intelligently adjusting the pH value of a desulfurization device of a thermal power plant. The method comprises the following steps: collecting inlet flue gas parameters, pH values of multiple points in an absorption tower and slurry physical property parameters in real time; transmitting the data to a control system, and dynamically predicting the optimal pH value range required by the current working condition by using a built-in desulfurization reaction model; comparing the actual pH value with a prediction range, generating a desulfurizing agent adding basic instruction, and performing dynamic correction by combining the liquid level and density of the slurry to obtain a final instruction; a high-precision metering pump and a regulating valve are controlled to execute precise adding; meanwhile, the model is self-optimized according to performance index feedback such as desulfurization efficiency and outlet SO2 concentration. Through combination of multi-parameter perception, model prediction feedforward and physical property parameter dynamic correction, the pH value is converted from passive and lagged adjustment to active and accurate intelligent adjustment, the desulfurization efficiency and the system stability are effectively improved, the operation cost is reduced, and environment-friendly up-to-standard emission is ensured.

The utility model discloses composite simulated fur fiber spinning equipment, and relates to the field of polyester filament yarn production.According to the composite simulated fur fiber spinning equipment, a first raw material is metered into a first raw material and a second raw material with different deniers through two metering pumps in a feeding mechanism, the first raw material enters a first cavity through a pipeline and then is sprayed out through a first spinning part at the bottom of the first cavity, and the second raw material enters a second cavity through a pipeline; a second raw material enters a second cavity through the other pipeline and then is sprayed out through a second spinning part at the bottom of the second cavity, meanwhile, a second raw material is sprayed out through the other feeding mechanism, and due to the fact that the component sections of the first spinning part and the second spinning part are different, the denier sections of the sprayed first raw material and the second raw material are different. According to the utility model, two different denier cross sections can be sprayed in one material distributing assembly, so that the technical problem that the existing fiber manufacturing equipment cannot manufacture various different denier cross section fibers in the production process at the same time is solved, and the technical effect that the various different denier cross section fibers can be manufactured in the production process at the same time is achieved.

The invention relates to the technical field of polyester slub yarns, and discloses a preparation method and device of a gradually-changed section shrinkage polyester slub yarn, and the device comprises a metering pump, a spinneret plate, an oiling device, a first hot roller, a second hot roller, a winding device, a hot roller motor, a programmable controller and a motor frequency converter; the metering pump is installed on the upper portion of the spinneret plate, the spinneret plate, the oiling device, the first hot roller, the second hot roller and the winding device are sequentially arranged along a filament conveying path, the first hot roller and the second hot roller are driven by a hot roller motor to rotate, the first hot roller is provided with a heating module used for adjusting the temperature, and the second hot roller is provided with a heating module used for adjusting the temperature. A hot roller motor of one hot roller is electrically connected with the motor frequency converter; and the motor frequency converter is in signal connection with the programmable controller. The method and the device for preparing the gradually-changed section-shrunk polyester slub yarn have the advantages that the production continuity and stability can be ensured through variable temperature and variable speed of the first hot roller and constant speed of the second hot roller and the winding head, and the like.

The utility model discloses a plunger rod with a guide structure and a plunger pump, and belongs to the technical field of plunger pumps, the plunger rod comprises a plunger rod main body and a multi-petal-shaped guide structure, the plunger rod main body is a multi-section cylindrical structure, the multi-petal-shaped guide structure is arranged on the outer side wall of the plunger rod main body, the multi-petal-shaped guide structure comprises a guide section and a plurality of notches which are formed in the axial direction of the guide section and have arc transition. The plunger pump solves the problems that in the prior art, when a traditional plunger pump conducts function switching, a plunger rod can collide when entering a pump sleeve, so that the plunger rod is prone to being blocked in the station switching process, and abnormal sound and abrasion are generated. The station switching device is high in universality, can be suitable for various precise filling metering pumps needing station switching, and is wide in application prospect.