82results about How to "Reduced settling time" patented technology

The invention relates to the technical field of water treatment fluorine removal agent production, in particular to a water treatment fluorine removal agent and a preparation method and application thereof. Specific raw materials are added and reasonable treatment steps are adopted for the wastewater containing fluorine, copper and iron ions generated in the semiconductor chip manufacturing etching process, so that the fluorine ions can be effectively removed; the method can remove copper and iron ions or reduce the influence of the copper and iron ions on fluorine removal (especially wastewater simply treated by sodium sulfide which is specially used for removing copper and iron ions), and has strong pertinence and applicability to etching wastewater with specific water quality; the method is good in collaboration, has both operability and flexibility, and ensures the treatment effect.

The invention provides a Kalman filtering parameter setting method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring a variance between an angular velocity measurement value measured by the MEMS gyroscope and a real angular velocity value when the MEMS gyroscope is at different angular velocities, and establishing a first mathematical relationship for representing a mapping relationship between the real angular velocity value and the variance; and when the angular velocity data acquired by the MEMS gyroscope is filtered in real time by using the Kalman filtering algorithm, determining the measured noise variance at the current moment based on the angular velocity estimated value at the previous moment output by the Kalman filtering algorithm and the first mathematical relationship, so as to determine the angular velocity estimated value at the current moment based on the measured noise variance at the current moment. According to the method, the calculated amount in the Kalman filtering parameter setting process can be reduced, and the dynamic performance of the MEMS gyroscope can be effectively tracked.

The invention discloses a gas compressor rotor blade milling blade body clamp and a blade body milling method thereof, and belongs to the technical field of aero-engine gas compressor blade machining. The clamp comprises a connecting disc, a supporting block, a positioning assembly A, a positioning assembly B and a clamping mechanism, the supporting block is arranged on the end face of one end of the connecting disc, the positioning assembly A and the positioning assembly B are both arranged on the supporting block, and the clamping mechanism is movably connected with the positioning assembly B and the supporting block. Two profiling check blocks are symmetrically and detachably connected to the inner side of the clamping mechanism. When the shapes or sizes of the tenons of the to-be-machined compressor rotor blades are different, the to-be-machined compressor rotor blades can be positioned and clamped only by replacing the profiling check blocks, the use flexibility of the clamp is remarkably improved, the clamp does not need to be aligned again, human errors are prevented from being introduced in the clamp replacing process, and the machining efficiency is improved. The machining cost of the clamp is reduced, and the alignment time of the clamp is saved.

The invention relates to the technical field of truss positioning devices, in particular to a double-layer large-span truss integrated small unit assembling mechanism and method. Comprising vertical frames, sliding rails are arranged on the two sides and the middle of each vertical frame, and the multiple vertical frames are spliced end to end to form a supporting jig frame; the guide assemblies are arranged on the sliding rails on the two sides of the vertical frame in pairs, and the two guide assemblies can form a V-shaped limiting channel and are used for guiding the truss to be aligned; the supporting assemblies are arranged on the sliding rails in the middle of the vertical frame in pairs, and locking pieces in butt joint with the guiding assemblies are arranged below the supporting assemblies; through cooperation of the supporting assembly and the guiding assembly, in the hoisting and falling process of the truss, the truss is rapidly guided to reach the designated position through guiding correction, the alignment time is effectively shortened, and the construction difficulty is reduced.

The present invention provides a device and method for removing hardness from industrial wastewater, and relates to the technical field of removing hardness from industrial wastewater, comprising a tank body, the inner surface of the tank body is rotatably connected to a first rotating rod through a bearing, the surface of the first rotating rod is rotatably connected to a bent rod through a bearing, the surface of the bent rod is fixedly connected to a rocking plate, the surface of the rocking plate is rotatably connected to a positioning rod through a universal joint bearing, the surface of the positioning rod is slidably connected to a lifting frame, the upper surface of the bent rod is fixedly connected to a screw rod, the surface of the screw rod is threadedly connected to a threaded barrel, the lifting frame is fixedly connected to the threaded barrel, the present invention drives the rotating frame to rotate through a first gear ring, the rotating frame drives the stirring blade to rotate through a rotating rod, at this time, the internal wastewater can be stirred, and the stirring can promote sufficient contact between the industrial wastewater and the reagent, thereby accelerating the reaction rate and improving the overall treatment efficiency.

The embodiment of the utility model discloses a wastewater or feed liquid deoiling device. A waste water or feed liquid oil removal device is of a hollow cavity structure and comprises a shell and an inner cavity, the inner cavity is divided into a steady flow area, a coalescence area and a separation area which are communicated, and the steady flow area is separated from the coalescence area through a pore plate; the flow stabilizing area is provided with a wastewater inlet, an elbow, a baffle plate and a sludge collecting bag; the coalescence area is provided with an egg support type corrugated plate and a mud collecting bag; open holes are respectively formed in the tops of the convex parts and the bottoms of the concave parts of the egg support type corrugated plate; and the separation area is provided with a light oil overflow port, a water outlet and a mud collecting bag. The device disclosed by the utility model has a better removal effect on heavy oil, light oil, suspended matters and the like, greatly reduces the treatment cost, is simple to operate, high in integration level and smaller in occupied area, and has a better application prospect.

The utility model relates to a kind of environment-friendly sewage sedimentation pretreatment device, it is related to sewage treatment technical field, including pre-sedimentation tank, the upper portion of the pre-sedimentation tank is provided with separation cylinder, the front end of the separation cylinder is installed with sewage inlet pipe in one side, the upper portion of the separation cylinder is installed with separation water outlet pipe, the bottom of the separation cylinder is installed with sludge discharge pipe by connecting pipe, one end of the sludge discharge pipe is equipped with first motor, the other end of the sludge discharge pipe is equipped with sludge discharge port, the inside of the pre-sedimentation tank is equipped with multiple equidistant distribution and parallel inclined plate, the bottom of the pre-sedimentation tank is conical structure, and the bottom of conical structure is equipped with sludge discharge cavity, the lower end of one side of the sludge discharge cavity is installed with second motor, the inside of the sludge discharge pipe and sludge discharge cavity is all installed with auger mechanism, and the scheme solves the problem that a large number of and complex component impurity particles in sewage are not treated directly to deposit, and the problem that the deposition effect is poor and the burden of deposition equipment is increased.

The utility model discloses an integrated high-efficiency sedimentation tank which comprises a coagulation tank, a flocculation tank, a plug flow area and a sedimentation tank which are communicated in sequence, a first stirrer is arranged in the coagulating basin, and is provided with a first dosing assembly; a second stirrer and a guide cylinder are arranged in the flocculation tank, the guide cylinder is vertically arranged, the second stirrer is arranged in the guide cylinder, and the second stirrer is provided with a second dosing assembly; a communicating pipe is arranged in the flocculation basin; one end of the communicating pipe is connected with the lower part of the side wall of the coagulating basin, and the other end of the communicating pipe extends into the guide cylinder and is arranged below the second stirrer; and the coagulating basin is communicated with the flocculating basin through a communicating pipe. According to the technical scheme, a medicament and sewage are fully mixed, the flocculation effect is good, the sludge concentration is high, the precipitation effect is improved, the precipitation time is shortened, and the effluent quality is improved.

The utility model belongs to water treatment technical field, specifically discloses a perforated folded plate for sedimentation tank and the sedimentation tank of oblique installation perforated folded plate. The perforated folded plate is the plate -like structure of undulating extension and includes at least three folded plate tops of undulating top end and three folded plate bottoms of undulating bottom end, and the folded plate top of perforated folded plate is adjacent to the folded plate bottom and is provided with a plurality of folded plate holes on or close to the folded plate top. The water inlet and the water outlet of the sedimentation tank are separately arranged in the lower part and the upper part of the pool body, a folded plate support is fixed above the water inlet in the pool body, a plurality of aforementioned perforated folded plates are obliquely arranged on the folded plate support in the pool body, the folded plate top of the perforated folded plate faces upwards and the folded plate bottom faces downwards. The perforated folded plate top of the utility model is provided with the folded plate hole, and the sewage can flow upwards through the folded plate hole, which not only can increase the sedimentation area, but also can realize automatic sludge discharge, has the characteristics of simple structure, wide application range, high sedimentation efficiency and automatic sludge discharge.

The utility model relates to a fly ash washing filtrate adjusting tank, which belongs to the field of filtrate adjusting tanks and comprises a liquid storage tank, a mixing structure is fixedly mounted at the upper end of the liquid storage tank and comprises a transfer pipe, a first shell is fixedly connected to the right end of the transfer pipe, and a feeding device is fixedly connected to the left end of the transfer pipe. The front end of the transfer pipe is fixedly connected with a water outlet, the lower end of the transfer pipe is fixedly connected with a reinforcing block, a linkage device is installed in the middle of the transfer pipe, and the rear end of the transfer pipe is fixedly connected with a water inlet; according to the fly ash washing wastewater treatment device, a flocculating agent and fly ash washing wastewater can be rapidly mixed through the linkage device and the feeding device, the amount of the added flocculating agent is accurately controlled, the wastewater and the flocculating agent do not need to be stirred subsequently in the liquid storage tank, the settling time of gypsum powder and heavy metal precipitates is shortened, and the working efficiency is improved.

The present invention provides a Kalman filter parameter setting method, device, electronic device and storage medium. The method comprises: obtaining the variance between the angular velocity measurement value and the true angular velocity value measured by the MEMS gyroscope when the MEMS gyroscope is at different angular velocities, and establishing a first mathematical relationship for characterizing the mapping relationship between the true angular velocity value and the variance; when the angular velocity data collected by the MEMS gyroscope is filtered in real time using the Kalman filter algorithm, the measurement noise variance at the current moment is determined based on the angular velocity estimation value at the previous moment output by the Kalman filter algorithm and the first mathematical relationship, so as to determine the angular velocity estimation value at the current moment based on the measurement noise variance at the current moment. The present invention can reduce the amount of calculation in the Kalman filter parameter setting process and effectively track the dynamic performance of the MEMS gyroscope.

The invention relates to the technical field of wireless communication, and provides a capacitor multiplexing charge pump circuit and a radio frequency switch module, which comprise a sensor circuit, a first delay circuit, a second delay circuit, an oscillator, a charge pump, a first capacitor, a second capacitor, a first switch, a first load circuit, a second load circuit and a capacitor switching circuit, the output end of the oscillator is connected with the input end of the charge pump, the charge pump is connected with the first end of the first capacitor and the control end of the first switch, the output end of the first switch is connected to a first load circuit or a second load circuit, and the second end of the first capacitor is grounded; the output end of the capacitor switching circuit is used for being connected with the second capacitor in parallel and connected to the output end of the charge pump, and the capacitor switching circuit is connected to the second capacitor in parallel or connected to the output end of the charge pump according to the delay signal output by the second delay circuit and received by the capacitor switching circuit. According to the capacitor multiplexing charge pump circuit, the area and the overall complexity of the capacitor are reduced.

The positioning tool comprises a base plate, the base plate is provided with at least two containing grooves matched with the appearance of a product, a plurality of adjustable pressing mechanisms of the same structure are arranged along the peripheries of the containing grooves, the adjustable pressing mechanisms are fixedly connected with the base plate, and the adjustable pressing mechanisms are arranged on the base plate. The left side and the right side of the base plate are respectively provided with a plurality of installation holes of a long structure. Compared with the prior art, the positioning tool has the advantages that the product alignment time is shortened, the machining efficiency is effectively improved, the displacement phenomenon in the product machining process is prevented, vibration can be effectively reduced in the machining process, the service life of a cutter and the service life of a machine tool are prolonged, and the product machining quality is improved.

This application relates to a chopper operational amplifier operation method, a chopper operational amplifier circuit, and a chopper operational amplifier. It can monitor the transient input changes of a chopper modulation circuit in real time and analyze whether a sudden input change has occurred. When a sudden input change occurs in the chopper modulation circuit, the circuit is controlled to switch from a first chopper frequency to a higher second chopper frequency. After a preset recovery condition is met, the circuit returns to the first chopper frequency. This scheme, by switching to a higher second chopper frequency when a sudden input change occurs, can shorten the output voltage settling time and accelerate the response speed. However, once no sudden input change occurs or the input stabilizes, the circuit maintains a lower first chopper frequency to avoid offset voltage degradation caused by high-frequency chopping. This approach avoids offset voltage degradation caused by prolonged high-frequency chopping and provides a timely response to sudden input changes.

This application relates to the field of machining technology, and in particular to a clamping fixture for a centrifugal compressor guide vane. The fixture includes a base plate, a drive device connected to the center of the base plate, and several equal-height blocks and displacement drive components arranged at intervals extending outwards from the drive device. The output end of the drive device simultaneously engages with the input ends of the multiple displacement drive components. Each displacement drive component includes a screw, one end of which is coaxially connected to a transmission unit, and the other end is connected to the base plate via a support unit. A slider is helically connected to the top of the screw, and its bottom is slidably connected to a slide rail. Several limiting parts are provided on the top of the slider along the screw axial direction, one of which is connected to a chuck. This application improves the versatility of the fixture by using equal-height blocks of varying lengths in conjunction with adjustable-position chucks. Furthermore, each chuck can synchronously move and clamp the workpiece under the action of the drive device, offering advantages such as compact structure, stable clamping, and high reliability.

The present invention relates to the technical field of sewage treatment, and in particular to a sewage pretreatment carbon source rapid separation device and a sewage treatment method, the method comprising: S1, mixing sewage with a flocculant for preliminary mixing to obtain a first mixture; S2, introducing the first mixture into a sedimentation tank for mixed sedimentation, setting a mixing zone filled with VF filler and a sedimentation zone for introducing micro sand from top to bottom in the sedimentation tank, and performing gas lift mixing from bottom to top at the bottom of the sedimentation tank; obtaining clean water and mud and sand sediment; S3, performing mud and sand separation on the mud and sand sediment to obtain micro sand and sludge; S4, recycling the micro sand for introduction into the sedimentation zone in S2; S5, concentrating and separating the sludge. The present invention can greatly shorten the sedimentation time and improve the treatment effect; wherein the micro sand can accelerate the flocculation and agglomeration, increase the volume of floc particles, shorten the residence time of the sedimentation tank, realize rapid solid-liquid separation, and thus realize a large amount of continuous water discharge.

The application belongs to the technical field of power system automatic control, and relates to a power equipment safety regulation system based on data analysis, which comprises a data acquisition unit, a state space analysis unit and a nonlinear adaptive regulation unit; a running state space is constructed by using a real-time output state sequence, a state offset modulus of a state point relative to a safety boundary is solved; then a control gain is dynamically mapped according to the modulus, and an integral link is constrained by using a body temperature change rate data, so as to output a safety regulation instruction; a system built-in parameter baseline back-off logic is provided; through dynamic mapping of a running state to a control parameter space, the application realizes mode conversion of power equipment from passive over-limit removal to active energy envelope regulation, effectively solves the mutual exclusion contradiction between regulation response bandwidth and steady-state accuracy, and improves the nonlinear disturbance receiving capacity of a hub node under a 50Hz fundamental frequency.

The utility model relates to the technical field of water-milled glutinous rice flour processing, and discloses a water-milled glutinous rice flour processing sewage sediment suction device which comprises a device shell, the top end of the device shell is fixedly connected with a connecting shell, the bottom end of the inner wall of the device shell is fixedly connected with a sedimentation tank, and the outer wall of the front end of the sedimentation tank is fixedly connected with a material injection pipe and penetrates through the material injection pipe. A feeding pipe is fixedly connected to the outer wall of the rear end of the sedimentation tank, a drainage pipe is fixedly connected to the outer wall of the left end of the device shell, a fixed pipe is fixedly connected to the top end of the sedimentation tank, a filter screen is fixedly connected to the inner wall of the fixed pipe, and a rotating impeller is connected to the inner wall of the fixed pipe through a water pumping assembly. According to the sewage treatment device, the stirring efficiency is improved, the precipitation time can be shortened by improving the stirring efficiency, the flow treatment capacity of the whole treatment system is improved, the sewage treatment speed is increased, and more sewage can be effectively treated in unit time.

The tail end driving clamp comprises a flange, a transmission rod, a transmission block, a driving ring and a plurality of springs, the two ends of the transmission rod are fixedly connected with the flange and the transmission block respectively, the driving ring is fixedly connected with the transmission block, the driving ring and the flange are coaxially arranged, an opening is formed in the driving ring, and the springs are arranged in the opening. A first through hole and a first threaded hole are vertically formed in the two sides of the opening respectively, the locking screw penetrates through the first through hole to be in threaded connection with the first threaded hole, the driving ring is used for tightly holding the tail end of the shaft workpiece, the springs are arranged in the circumferential direction of the driving ring at equal intervals, and the two ends of each spring are connected with the flange and the driving ring respectively. The clamp is used in combination with an existing high-precision center and an existing center frame, can replace a chuck, fix the tail end of a shaft workpiece and drive the shaft workpiece to do rotary motion, can achieve high-precision and high-efficiency clamping of the shaft workpiece, can be widely applied to a grinding machine with a headstock provided with the center, and enables the average grinding machining efficiency of the shaft workpiece to be improved by about 10%.

The invention discloses a relaxation fluctuation suppression method influenced by temperature change of an optical pump atom magnetometer, and the method comprises the following steps: constructing a relaxation noise model influenced by temperature based on the optical pump atom magnetometer, the relaxation noise model comprising a mapping relation between a measurement error of the optical pump atom magnetometer and a gas chamber temperature of an environment where the relaxation noise model is located; based on the mapping relation and the heat transfer principle, an air chamber heating thermal model is constructed, and the air chamber heating thermal model describes the dynamic relation between the heating film input voltage and the air chamber temperature; updating parameters of the air chamber heating thermal model in real time by applying a self-adaptive model predictive control algorithm; on the basis of the updated thermal model parameters, model predictive control algorithm control is executed so as to restrain air chamber temperature fluctuation, and then relaxation fluctuation of atoms in the optical pump atom magnetometer is restrained; the establishment time and overshoot of air chamber heating are effectively reduced, the low-frequency noise level of the optical pump atom magnetometer is reduced, and the measurement sensitivity is improved.

The invention discloses a temporary plugging steering and large-particle-size sand adding fracturing method for a deep coal and rock reservoir. The method comprises the measures of viscosity control, fracture forming and sand increasing, shielding temporary plugging steering, steering sand temporary plugging, large-particle-size filling supporting and the like. Comprising the following steps that high-viscosity liquid is adopted for making a main crack, and cleaving is started; medium-low mucus is switched, 40 / 70-mesh proppant is continuously added, near-wellbore zone filling and cleaving are conducted, and a shielding zone is formed; the first steering of the fracturing crack is realized by stopping and starting the pump; a far-end cleat is opened through high-viscosity liquid, and more main seams are formed; secondary cracks and micro cracks are expanded by adopting medium-high mucilage liquid carrying 40 / 70-mesh proppant; medium mucilage liquid is adopted for carrying steering sand for temporary plugging in the fracture, secondary steering of the fracturing fracture is achieved, and the fracture net is more complicated; middle-high mucus is adopted to carry a 30 / 50-mesh proppant to realize multi-scale effective support of the complex seam net. According to the method, the coal rock fracturing transformation volume and the crack complexity can be remarkably improved, the flow conductivity of the support crack is improved, the measure yield is improved, and the stable production period is prolonged.

The invention discloses a pipeline butt joint tensioning device and an application method thereof in pipeline valve replacement. The pipeline butt joint tensioning device comprises a first fixed connecting piece and a second fixed connecting piece which are symmetrically arranged on the two sides of a dust removal pipeline respectively; the first fixed connecting piece comprises a first connecting part and a second connecting part in butt joint with the first connecting part, the second fixed connecting piece comprises a third connecting part and a fourth connecting part in butt joint with the third connecting part, and the first connecting part and the second connecting part form a through pipeline containing space A; the third connecting part and the fourth connecting part form a through pipeline containing space B. The through pipeline containing space A and the through pipeline containing space B are coaxially arranged. A fixing base is fixed to the bottom of the third connecting part and the bottom of the fourth connecting part and arranged on a positioning platform, and the bottom of the fixing base is in an inverted-T shape. And the fixed seat is embedded in the groove of the positioning platform.

The present invention provides a decision feedback equalizer and a PAM‑4 receiver. On the one hand, the parasitic capacitance is reduced by reducing the number of interfaces of the equalization taps, thereby reducing the summer settling time. On the other hand, the delay caused by the sampling decision device is reduced by increasing the bandwidth of the sampling stage and the input amplitude of the latch. Furthermore, the loop delay of the DFE is reduced comprehensively from two aspects, thereby solving the problem of tight timing margin.

The invention is suitable for the technical field of conveying devices, and provides a packaging container printing machine limiting conveying device which comprises a device base, a side frame, horizontal guide columns, a movable frame, lifting lugs, a threaded sleeve, an equal-distance regulation and control mechanism, a circulation mechanism, a pressure control mechanism and a limiting guide mechanism, and the threaded sleeve is meshed with threaded teeth arranged at one end of one horizontal guide column. According to the limiting conveying device of the packaging container printing machine, the limiting guide mechanism can effectively guide and limit special-shaped side walls of packaging plates with different thicknesses or non-standard packaging plates through self-adjustment, the phenomena such as deviation of the packaging plates in the conveying process are avoided, and the conveying efficiency is improved. The circulating mechanism can stably and efficiently convey the packaging plates with different thicknesses through the pressure control mechanism, the equidistant regulation and control mechanism can drive the limiting guide mechanisms and the pressure control mechanisms on the multiple movable frames to move at equal intervals, the packaging plates with different specifications are effectively limited and conveyed, and the conveying requirements of the device for diversified packaging plates are met.

The utility model belongs to the technical field of sewage treatment, and particularly relates to a precipitation device for sewage treatment, which comprises a fixing plate, a precipitation tank is fixedly mounted at the top of the fixing plate, small electric push rods are fixedly mounted at four corners of the upper surface of the fixing plate, and one end of each small electric push rod is fixedly connected with a connecting block. A connecting rod is fixedly mounted at the top of the connecting block, and one end of the connecting rod is fixedly connected with a precipitation plate. The electric hydraulic push rod is started to drive the servo motor and the stirring rods to perform lifting motion adjustment, so that the stirring rods are lifted into the settling tank, the servo motor is started to drive the stirring rods to rotate, and the plurality of rotating stirring rods can stir sewage and a flocculating agent in the settling tank, so that the sewage and the flocculating agent can be fully mixed; a large amount of suspended matters in the sewage are removed, so that the sewage treatment effect is achieved, the sewage and a flocculating agent can be stirred and mixed in time, the sewage precipitation time is saved, and the sewage treatment effect is improved.

This invention provides a signal detection circuit, device, chip, and electronic device. The signal detection circuit provided by this invention includes a reference voltage module, a gain amplifier, an analog-to-digital converter (ADC), and a digital module: the reference voltage module provides a reference voltage for the gain amplifier and the ADC; the gain amplifier amplifies the signal to be detected and outputs an amplified signal; the ADC converts the amplified signal into a digital signal; the digital module obtains the magnitude of the signal to be detected based on the digital signal, and also simultaneously sends an enable signal to the gain amplifier, the ADC, and the reference voltage module, so that the gain amplifier, the ADC, and the reference voltage module are simultaneously enabled. This signal detection circuit reduces the detection time for oscillating signals.