112 results about "Slurry flow" patented technology

This invention belongs to the field of magnetic separation technology, and in particular to a device for the coordinated mineralization and magnetic separation of iron in red mud. The lower inner side of the sand mill shell is provided with an arc-shaped concave cavity adapted to a cylindrical grinding rotor. The cylindrical grinding rotor is set in the arc-shaped concave cavity by rotation. Its outer cylindrical surface and the inner wall of the sand mill shell form a non-equidistant grinding chamber with left and right symmetry and a larger upper and smaller lower spacing. The minimum gap between the chambers is located in the bottom area of ​​the arc-shaped concave cavity. An overflow port is opened on the side wall of the sand mill shell in the downstream direction of the slurry flow path. A belt-type iron separator is used to magnetically separate the slurry discharged from the overflow port to remove iron. The slurry after magnetic separation is returned to the inside of the sand mill shell for circulation and re-grinding. The mixture after one grinding is subjected to preliminary magnetic separation to remove iron ore that can be magnetically adsorbed. Then the remaining mixture is circulated again. By diverting the iron-containing particles during the circulation process, it is ground to the target 1μm faster.

This invention discloses a system and method for separating carbon dioxide gas using a hydrate method. The system includes: a reaction vessel with an inner and outer cavity structure, the outer surface of which is equipped with a constant temperature layer; an external circulation unit that injects a high-concentration TBAB solution into the inner cavity and forms type A TBAB hydrate crystals therein, while the hydrate slurry flows from the inner cavity into the outer cavity and is discharged from the outer cavity for reuse; an inlet unit that injects a low-temperature, high-pressure mixed gas containing CO2 into the inner cavity; and an internal circulation unit that injects a low-concentration TBAB solution into the inner cavity, converting type A TBAB hydrate into type B TBAB hydrate while simultaneously using type A TBAB hydrate crystals as inducing particles to undergo a hydration reaction with the mixed gas in the inner cavity; after the reaction, the hydrate slurry dissolves and captures CO2 while the remaining liquid phase is discharged for reuse. This invention reduces energy consumption and, by adding inducing crystal nuclei, effectively shortens the induction time, achieving a continuous process of introducing inducing crystal nuclei and generating hydrates in a closed system, effectively improving separation efficiency.

This invention discloses a device and method for detecting the flow properties of grout injected behind the tunnel wall, relating to the field of new material testing. In this invention, a tunnel boring machine (TBM) is simulated in tunnel construction using a TBM propulsion simulation system. Transparent soil grout containing tracer particles is injected into the grouting gap between a tunnel wall model and a segment model using a grouting device. Both the tunnel wall model and the segment model are made of transparent material. A laser emitter then emits a laser beam into the grouting gap. When the laser beam hits the transparent soil grout, the tracer particles within the grout scatter the laser beam. An axial visual detection unit and a radial visual detection unit respectively track the scattered laser beam from the radial and axial directions of the tunnel wall model. By coordinating the laser emitter, axial visual detection unit, and radial visual detection unit, the tracer particles are tracked, and the flow direction and flowability of the transparent soil grout are determined by the flow of the tracer particles.

This utility model relates to the technical field of starch processing equipment, specifically to an adjustable flow rate starch slurry pumping pipeline device. It includes two symmetrically arranged main pipe bodies. A connecting pipe is fixedly installed on one side of each main pipe body near the point between them. An adjusting pipe connects the two connecting pipes. Each connecting pipe contains several first connecting rods, and the adjusting pipe contains several retractable second connecting rods. This utility model achieves stepless flow rate adjustment by arranging symmetrical main pipe bodies, connecting pipes, and an adjustable-diameter silicone rubber adjusting pipe, and by utilizing the hinged first connecting rods and retractable second connecting rods to form a linkage structure. When the adjusting mechanism drives the second connecting rods to extend or retract, the diameter of the adjusting pipe changes synchronously, thereby changing the flow cross-sectional area of ​​the pipeline and achieving precise control of the starch slurry flow rate.

Some embodiments of the present application provide an electrode slurry processing device and a processing method, the electrode slurry processing device comprising a first processing pipeline for flowing through the electrode slurry, and a power supply device, the power supply device comprising a power supply and an electrode structure, the power supply being electrically connected with the electrode structure, the electrode structure being arranged in the inner cavity of the first processing pipeline, and the electrode structure being used to apply voltage to the electrode slurry in the inner cavity of the first processing pipeline. In the above structure, the electrode slurry flowing through the inner cavity of the first processing pipeline is affected by the voltage applied by the electrode structure, and the metal elements in the electrode slurry can be quickly ionized to contact with oxygen to generate metal oxides or metal hydroxides, thereby reducing the content of the metal elements in the electrode slurry, improving the quality of the electrode slurry, and helping to improve the reliability of the battery cells made.

The utility model belongs to the technical field of pipe shed steel frame, concretely relates to a mine laneway fabricated pipe shed steel frame, including steel pipe and grouting expansion assembly, is equipped with overflow booster hole on the side of steel pipe located in one side of steel pipe grouting hole, grouting expansion assembly is sleeved on the steel pipe outside overflow booster hole, grouting expansion assembly is composed of rubber expansion ring, fixed ring, temperature sensing lock ring, both ends of rubber expansion ring are clamped in the inside of fixed ring, and one end of temperature sensing lock ring is clamped and connected between the outside surface of rubber expansion ring and fixed ring, the other end of temperature sensing lock ring is formed with deformation compression section. Grouting expansion assembly is added to the outer wall of steel pipe, realizes slurry pressure trigger type plugging, with the two-stage sealing mechanism of slurry pressure expansion and temperature control locking, solves the problem that slurry flows back and seeps from the gap between pipe wall and aperture.

The utility model relates to the technical field of coal mining, especially relates to a soft coal seam drilling hole wall stability reinforcing device, including the drill rod installation head, the outer surface of drill rod installation head is provided with the first outer thread, the rear end of drill rod installation head is fixedly connected with the guide assembly, the outer surface front part of guide assembly is fixedly sleeved with the grouting assembly, the outer surface middle part of guide assembly is movably sleeved with the support reinforcing assembly. The utility model discloses a soft coal seam drilling hole wall stability reinforcing device, through inflatable rubber support ring inflation, makes it swell and lets the embedding convex head embeds the hole wall, and the pre-support is formed quickly, and then the slurry is injected into the guide sleeve, and the slurry flows out from the annular array distribution slurry outlet hole and penetrates the coal seam fracture, and the inflatable rubber support ring and the solidified slurry jointly reinforce the hole wall, greatly improve the hole wall stability and the anti-deformation ability, guarantee the safety of soft coal seam drilling operation.

The application relates to the field of slurry transportation, in particular to a multi-stage pump station cooperative control method, device and equipment based on dredging productivity, which comprises the following steps: acquiring the dredging productivity parameter at the outlet of the dredging pipe of a dredger in real time; dividing the slurry flow into multiple virtual slurry lumps based on a preset transportation volume and associating corresponding density values and viscosity values; calculating the transportation difficulty index of each virtual slurry lump based on the density values and the viscosity values; acquiring the current pipeline transportation state and calculating the time information of each virtual slurry lump to each pump station; calculating the adjustment time and the required adjustment amount of each pump station to each virtual slurry lump based on the time information and the transportation difficulty index; when the maximum adjustment amount of any pump station is less than the corresponding required adjustment amount, adjusting the insufficient adjustment amount based on the upstream and / or downstream pump stations adjacent to the pump station; at each adjustment time, controlling the corresponding pump station to carry out feedforward adjustment according to the required adjustment amount, which has the advantages that the method can adapt to complex time-varying working conditions and has the multi-pump station cooperation capability.

The utility model discloses a kind of slurry flow control system for shield machine and shield machine with it, comprising: the slurry cabin of being laid in the shield body of shield machine, and the transition cabin, grouting system and slurry discharge system of being laid outside shield machine, and air pressure control system. Transition cabin is equipped with liquid level detector for detecting the liquid level in it and first pressure detector for detecting the pressure in it, and transition cabin is connected with air pressure control system to adjust the air pressure in it, and transition cabin is also connected with slurry cabin, to control slurry cabin pressure by slurry pressure and air pressure in transition cabin, and then make slurry cabin pressure match face water and soil pressure. Transition cabin and slurry cabin are also connected with grouting system to inject slurry respectively, and slurry cabin is also connected with slurry discharge system to discharge slurry outward. The new system can ensure the stability of liquid level and air pressure in transition cabin, and then control the stability of slurry cabin pressure, so that slurry cabin pressure matches face water and soil pressure.

This invention relates to the field of mine backfilling technology and discloses a process for backfilling phosphogypsum solid waste in phosphate mine goafs. The process includes: erecting a wavy backfilling pipeline along the base plate, consisting of alternating uphill and downhill pipe sections; pumping prepared phosphogypsum slurry into the pipeline for transport; as the slurry flows through the uphill pipe section, its own weight increases the axial extrusion pressure, driving free water to seep into the pipe wall to form a boundary liquid film; as it flows through the downhill pipe section, its own weight reduces the extrusion pressure, generating negative pressure to draw the boundary liquid film back into the slurry; by alternating pipe sections, a periodic seepage and backflow cycle of free water is established, transporting the slurry to the goaf for consolidation. This invention utilizes the undulation of the pipeline to induce stress alternation in the slurry, spontaneously constructing a lubricating liquid film regeneration mechanism, blocking liquid phase dissipation, eliminating the need for additional components, reducing friction along the route, and ensuring stability during long-distance transport.

This invention discloses a slurry sensing and adaptive control method for the homogenization process of lithium-ion batteries, relating to the field of lithium-ion battery production technology. The method includes the following steps: obtaining the electrolyte concentration matrix and slurry flow velocity field of the target object; performing differential fusion on the electrolyte concentration matrix and the slurry flow velocity field to generate a local coupling index; performing weighted autoregression calculation on the electrolyte concentration matrix, and correcting the weighted autoregression calculation result based on the local coupling index and the slurry flow velocity field to generate an electrolyte concentration prediction result. This scheme extracts the electrolyte element set at the most recent A time points along the time axis for each grid point and performs weighted autoregression calculation. In the time dimension, it can differentiate the weighting of data according to the importance of different time points, further performing flow field diffusion calculation on the slurry flow velocity field and concentration gradient field, and using the local coupling index to spatially correct the weighted autoregression result.

The application discloses a kind of fine-grained vanadium-titanium iron concentrate filtration pretreatment methods, comprising the following steps: fine-grained vanadium-titanium iron concentrate and water are mixed and the mass fraction of the fine-grained vanadium-titanium iron concentrate in the obtained suspension is adjusted to predetermined concentration, obtain first slurry;First slurry is passed through demagnetizer, and demagnetization is carried out, and second slurry is obtained;Second slurry is treated with ultrasonic wave, and third slurry is obtained;Third slurry is mixed with a predetermined amount of flocculating agent and then sent into a magnetic separation column after stirring, the operating parameters of the magnetic separation column are adjusted, the height difference between the mixed slurry in the magnetic separation column cylinder and the overflow surface is controlled, and the mass fraction of fine-grained vanadium-titanium iron concentrate in the fourth slurry flowing out of the magnetic separation column is controlled to be a predetermined concentration, and the flocculating agent is prepared from corn starch;Vacuum filtration is carried out on the fourth slurry.It is beneficial to increase the agglomeration diameter of fine-grained vanadium-titanium iron concentrate particles before filtration, reduce the moisture content of the product obtained after filtration of fine-grained vanadium-titanium iron concentrate, and improve the filtration efficiency.

This invention relates to the field of mining engineering technology, specifically to an environmentally friendly desliming process for bauxite beneficiation, comprising the following steps: raw ore washing and desliming, fine mud concentration and water separation, slurry filtration and wastewater return, and clean water replenishment and system circulation. During operation, the fine mud-containing slurry in the collection tank below the desliming screen is pumped to the concentration equipment. During the operation of the concentration equipment, the slurry slowly diffuses and settles within the equipment, while the fine mud particles settle downwards under gravity, forming concentrated slurry. Clear water is formed at the top and flows back into the clean water tank for recycling. During the operation of the filter press, the wastewater generated by filtration also flows into its matching collection tank. Through a return pipeline and a quantitative conveying pump, this portion of wastewater is quantitatively and continuously transported to the desliming screen collection tank in step S1. The return flow rate matches the slurry flow rate in the desliming screen collection tank, achieving internal circulation of wastewater within the system and avoiding water waste and a significant increase in load during subsequent treatment.

This invention primarily relates to the field of rotary drilling rig control technology. To address the problems of inaccurate borehole collapse risk prediction, lag, and disconnect between prediction results and construction control, which prevents dynamic adjustment of drilling parameters based on risk, this invention provides a method for predicting borehole collapse risk and improving stability in rotary drilled cast-in-place piles. First, an LSTM network is used to learn the evolutionary pattern of borehole collapse risk from historical construction data. Using real-time collected multi-source drilling parameter time-series data as input, the probability of borehole collapse risk is predicted over multiple future time steps. Then, using the predicted risk sequence as feedforward information, a model predictive control optimization problem is constructed. Under the premise of satisfying equipment physical limits and operational smoothness constraints, a multi-objective optimization function is solved to dynamically adjust the drilling rate and mud flow rate, achieving proactive risk avoidance. This ensures borehole stability while maintaining construction efficiency, achieving precise adaptive control of pile foundation construction quality.

The utility model provides a kind of mud and automatic mixing device of medicament, the mixing device includes mud flow channel and medicament adding box, the mud flow channel is the long slot of two ends open, mud flow channel is sequentially provided with medicament delivery area, medicament mixing area and out pulp area from import towards export, the medicament adding box is set in the medicament delivery area above of mud flow channel, medicament delivery port is equipped in the bottom of medicament adding box;The medicament mixing area of the mud flow channel is equipped with mixing baffle, slurry mixing rod and slurry surge wing plate, the medicament mixing area export end of the mud flow channel and discharge area import end are equipped with a section of variable diameter area, and variable diameter area width is less than medicament mixing area and out pulp area.The utility model can realize natural flow dosing, does not need any pumping equipment and pipeline in dosing process, to avoid the various defects of pumping dosing, simple operation, and reduce equipment maintenance, reduce early investment cost and operating energy consumption.

This application discloses a multi-parameter real-time monitoring and intelligent batching system for gangue-filled slurry, comprising: a sensing and monitoring module for real-time acquisition of slurry physical property parameters and pipeline operating parameters during the preparation and transportation of gangue-filled slurry; the parameters include at least slurry density, slurry viscosity, slurry flow rate, and pipeline pressure; an intelligent decision-making module, communicatively connected to the sensing and monitoring module, which has a built-in intelligent decision-making model based on deep reinforcement learning, for dynamically outputting instructions for adjusting the slurry ratio based on the received real-time parameters, the instructions including the adjustment amount of the mass ratio of fine-particle gangue to coarse-particle gangue and the adjustment amount of slurry mass concentration; and a batching execution module, communicatively connected to the intelligent decision-making module, for real-time control of the fine-particle gangue feeding device, the coarse-particle gangue feeding device, and the water supply device according to the instructions, so as to dynamically adjust the particle size distribution and concentration of the slurry. This achieves adaptive optimization of the gangue-filled slurry ratio.

This invention relates to the field of mineral processing technology. The invention discloses a multi-stage gradient magnetic separation device for magnetic separation of slurry, characterized by comprising: a sluice for conveying slurry; a magnetic separation unit comprising a plurality of magnetic separation components arranged along the slurry flow direction, each magnetic separation component comprising a plurality of magnetic separation rods arranged at intervals, the magnetic separation rods being adapted to magnetically attract ferromagnetic substances in the slurry, the magnetic properties of the plurality of magnetic separation components increasing sequentially in the slurry flow direction; and a driving component adapted to drive the magnetic separation components respectively, causing the magnetic separation components to insert into or leave the sluice. The multi-stage gradient magnetic separation device provided by this invention improves the grade and recovery rate of the separated ferromagnetic substances.

This utility model relates to the field of coating die manufacturing technology, and in particular to a corrosion-resistant slot coating die, comprising a substrate layer, a transition layer, a discharge slot, a rounded chamfer, and a functional layer; the rounded chamfer is provided at the discharge end of the discharge slot, and the chamfer radius is 0.1-0.5mm; the functional layer covers both sides of the discharge slot; one side of the transition layer is metallurgically bonded to the functional layer, and the other side of the transition layer is tightly connected to the substrate layer; the substrate layer of this utility model is a rigid support structure, and the interface structure of the transition layer buffers thermal stress; the functional layer is a dense surface layer covering the inner wall of the slot, and its surface forms a continuous passivation film structure. Through the multi-layer structure, the penetration of corrosive media is blocked, and the rounded chamfer design effectively eliminates the dead zone of slurry flow, which can ensure mechanical strength while significantly improving corrosion resistance, and has the advantages of long service life, high precision, and reduced use of precious metals.

Provided herein are various embodiments of a downhole motor milling assembly having a tubular string, a flow-by anchor positioned on the tubular string, a stroking device positioned on the tubular string and downhole from the flow-by anchor, a downhole motor positioned on the tubular string and downhole from the stroking device, and a milling assembly positioned on an end of the tubular string. Further milling assemblies provide where the flow-by anchor temporarily attaches to a casing while permitting mud to flow past the flow-by anchor.

The present disclosure provides a digital-twin-based yuba production line slurry adding optimization control method and system, which comprises obtaining slurry flow data, temperature distribution data and equipment operation data of the yuba production line during the slurry adding operation process, and constructing a real-time production data set according to the slurry flow data, the temperature distribution data and the equipment operation data; inputting the real-time production data set into a yuba production line digital twin model for virtual-real synchronous mapping processing to generate virtual-real synchronous mapping data; performing slurry adding process optimization analysis based on the virtual-real synchronous mapping data to generate a slurry adding optimization strategy; generating a slurry adding control instruction according to the slurry adding optimization strategy, and sending the slurry adding control instruction to a slurry adding execution system of the yuba production line to trigger process adjustment operation. The intelligent and dynamic control of the slurry adding in the yuba production process is realized, and the production efficiency and the yuba product quality are improved.

The utility model discloses a flow distribution device, flow distribution device is equipped with accommodating cavity, feed channel and a plurality of discharge channels, and the feed channel is connected through the accommodating cavity and discharges the channel, and a plurality of discharge channels are arranged at intervals around the axis of accommodating cavity, and the minimum distance between the discharge port of each discharge channel and the axis of feed channel is equal, so that the flow and pressure of slurry flowing out from each discharge channel are equal, the flow and pressure of slurry can be accurately controlled, thereby improving the coating quality of base material.

The application discloses a novel upper suspension pulse generator, which comprises a shell, a large mushroom head, a small mushroom head, a floating piston and a driving assembly. The inner side of the shell is provided with the floating piston, the floating piston divides the inner side of the shell into an upper space and a lower space, the large mushroom head is arranged in the upper space of the shell, and the driving assembly and the small mushroom head are arranged in the lower space of the shell. The inner cavity of the shell is provided with a mud flow channel extending in the axial direction, the inner side of the upper space of the shell is fixedly installed with a flow limiting ring, the flow limiting ring is arranged at the bottom of the large mushroom head, and the inner side of the lower space of the shell is provided with a piston cavity in communication with the floating piston. The application is provided with a taper surface matching structure formed by the large mushroom head and the flow limiting ring, the large mushroom head is assembled above the flow limiting ring, the impact force of the drilling fluid from top to bottom is used to push the large mushroom head to move downward to reduce the flow gap, the quick adjustment of the area of the mud flow channel is realized, and the effect that stable pressure pulses can be generated without hydraulic transmission or rotating blades is achieved.

This utility model belongs to the field of lithium battery technology and discloses a slurry buffer chamber and a coating die head, including a cavity. The cavity contains a buffer chamber and an output chamber that are connected to each other. The buffer chamber is connected to a feeding structure, and the output chamber is connected to a discharging structure. The output chamber is narrow at both ends and wide in the middle. The buffer chamber can temporarily store a certain amount of slurry, playing a role in buffering and stabilizing the slurry supply for subsequent processing. The output chamber's narrow-at-both-ends and wide-in-the-middle shape allows the slurry to form a specific distribution within the secondary cavity during slurry flow, which may help with the rational distribution of slurry at different positions during subsequent processing. The slurry flows into the discharging structure through the output chamber.

The application provides an arrangement structure of anti-fluidization medium pieces, which comprises a medium piece array in a magnetic medium box; one end of the magnetic medium box is a slurry input end, and the other end is a slurry output end; the medium piece array is arranged by three or more medium pieces; in the upward view of the slurry flow direction of the magnetic medium box, the three adjacent medium pieces are arranged in a non-isosceles triangle layout which can destroy the fluidization movement rule of the slurry, so as to increase the collision probability of the magnetic particles in the slurry and the medium pieces; the arrangement method of the application can effectively increase the adsorption area, destroy the slurry flow rule, and significantly improve the separation efficiency of the high-gradient magnetic separator.

This utility model discloses a device for detecting the density of slurry in a pipeline, comprising a main pipeline, a detection pipeline, a cleaning water pipeline, a cleaning steam pipeline, a density meter, and a waste liquid tank. Slurry flows through the main pipeline. The inlet and outlet of the detection pipeline are connected to the side of the main pipeline and the waste liquid tank, respectively. The diameter of the main pipeline is larger than that of the detection pipeline. The inlet and outlet of the detection pipeline are respectively equipped with a feed solenoid valve and a discharge solenoid valve. The cleaning water pipeline and the cleaning steam pipeline are both connected to the detection pipeline. The density meters are located on both sides of the detection pipeline. By connecting the small-diameter detection pipeline to the main pipeline and utilizing the principle of communicating vessels, the density of the slurry in the main pipeline can be obtained by measuring the density of the slurry in the detection pipeline using a low-dose isotope radiation density meter. This reduces the amount of radiation source used, improving economic efficiency and safety.

A flow battery relies on slurry-type electrode in which particles may be selectively and temporarily plated (relative to a solid / standard electrode). Owing to the comparatively viscous nature of the slurry, specific accommodations for the electrolyte flowpaths must be made, thereby eliminating problematic reaction areas across certain facings of the solid electrode that might otherwise impede slurry flow and / or degrade performance of the battery. Methods of operating such a battery, storing electrical energy, and other related processes are also contemplated.

The application provides a device and method for testing viscosity of slurry under high temperature and high pressure. The device comprises a slurry heating and pressurizing kettle, a slurry testing pipeline and a slurry receiving tank which are sequentially communicated in the direction of slurry flow; a first buffer tank for maintaining constant pressure of the slurry heating and pressurizing kettle; the first buffer tank is in gas phase space communication with the slurry heating and pressurizing kettle; a second buffer tank for maintaining constant pressure of the slurry receiving tank; the second buffer tank is in gas phase space communication with the slurry receiving tank. The application solves the problem of lacking of testing viscosity of slurry under high temperature and high pressure in the prior art.

A kind of washing silica residue water separation hopper, including hopper, filter screen, flush pipe, drain pipe, slag outlet, half ball valve etc., filter screen is detachably connected in hopper, flush pipe and drain pipe are fixed on the outside of hopper, slag outlet is fixedly connected at the bottom of hopper, half ball valve is connected at the lower part of slag outlet.Filter screen is made of four filter screens, and each side is pressed on the inner wall of hopper using clamps.Filter screen is detachably connected in hopper, which can be easily disassembled for maintenance.At least two rows of flush pipe holes and at least two rows of drain pipe holes are provided on the side wall of hopper;flush pipe holes are arranged at the upper part of drain pipe holes.After washing with water, slag slurry flows through the filter hopper, and is filtered, separated and discharged through the filter screen.The above structure can effectively solve the problems in the prior art, and the problems of difficult residue storage, difficult separation of residue and water, and easy wear of discharge valve during the cleaning process of silica.

This utility model discloses a casting molding machine for preparing ceramic substrates, belonging to the field of ceramic casting molding technology. It includes a conveying assembly and a leveling assembly. The conveying assembly is used to convey ceramic slurry. The leveling assembly includes a scraper, a lifting frame, and a heating unit. The scraper is connected to the conveying assembly via the lifting frame, and the lifting frame can adjust the depth to which the scraper cuts into the ceramic slurry. The heating unit includes an electromagnetic heating plate connected to the scraper for uniformly heating and solidifying the ceramic slurry flowing through the scraper. This utility model can perform preliminary thermal solidification of the surface of the ceramic slurry, ensuring the uniformity of the ceramic substrate structure.

This invention provides a cement slurry rheological testing device and method, belonging to the field of oil and gas cementing. The device includes: a sample container for holding the fluid to be tested; a rotating inner shaft disposed inside the sample container; a drive shaft, the lower end of which is connected to the axis of the rotating inner shaft, and the upper end connected to a motor; a motor that drives the rotating inner shaft to rotate at a preset speed; a detection component, including a first detection structure or a second detection structure, wherein the first detection structure is used to detect the torque of the outer edge of the rotating inner shaft, and the second detection structure is used to detect the output power of the motor; and a controller connected to the detection component, used to calculate the rheological parameters of the fluid to be tested based on the detection results of the first or second detection structure and the speed of the motor. This device improves the accuracy of cement slurry rheological parameter measurement.