7803results about "Cement mixing apparatus" patented technology

Provided is an efficient and energy-saving building slurry stirring device. The device includes a grouting assembly, which includes a base, a storage tank, a discharge pipe, a grouting pump and a control box. The storage tank is arranged at the top of the base, the discharge pipe is located at one side of the storage tank, the grouting pump is arranged on the discharge pipe, and the control box is fixed to the top of the base. When the fluidity of a grouting material in the storage tank is reduced due to solidification, the stirring assembly can stir the grouting material in the storage tank. Then, the stirring assembly stops stirring the grouting material to save energy. After the grouting is completed, an inner wall of the storage tank can be cleaned by the stirring assembly.

The invention provides methods and compositions for treating wash water from concrete production with carbon dioxide. The treated wash water can be reused as mix water in fresh batches of concrete.

Embodied within a realm of transformative innovation, a proactive AI-powered system emerges, seamlessly and autonomously managing the addition of chemical admixtures to control and adjust the composition of concrete during production and transport. The system comprises a concrete mixer tank, reservoirs for the chemical admixtures, a mechanism to dispense them as needed, sensors, and proactive AI-based control system, embodying the pinnacle of the proactive intelligent automation. Sensors track the concrete's properties and environmental conditions, and the proactive AI-based control system analyses the sensor data in real time to discern the precise type, quantity, and timing of chemical admixtures required to maintain the optimal properties of the concrete within the mixer tank, ensuring unwavering fidelity to the desired specifications. This autonomous AI-based system aims to produce concrete with minimal water addition, ensuring consistent concrete quality and reducing reliance on manual intervention.

The invention provides a flow-state solidified soil mixing construction method based on automatic adjustment of proportioning parameters, belongs to the technical field of flow-state solidified soil, and realizes intelligent control of a flow-state solidified soil mixing process by establishing a three-section type precise screening and stirring system and a high-precision automatic control system. According to the method, firstly, target performance parameters are input, and an optimal matching scheme is automatically selected through a multi-target optimization algorithm; starting an original soil treatment unit to perform soil material dispersion treatment and measuring the physical characteristics of the soil material; adding the raw materials according to the accurate measurement, and fully mixing; when it is detected that the performance of the mixture deviates from a target value, the system automatically triggers a parameter compensation mechanism for adjustment; and meanwhile, a material ratio fluctuation early warning system is established, so that uneven mixture quality caused by starting and stopping of equipment or material conveying delay is avoided, and the technical problem that in the prior art, matching parameters are difficult to accurately regulate and control in real time in the mixing process of the flow-state solidified soil is solved.

The invention relates to the technical field of engineering construction control, in particular to a self-adaptive control method and system for a cement mixing pile, and the method comprises the steps: setting the slurry preparation ratio parameter of a slurry preparation barrel of a feeding hopper according to the working information of the cement mixing pile, and conveying the prepared slurry to a slurry storage barrel of a discharging hopper; collecting a slurry static pressure signal of a slurry storage barrel of the blanking hopper, and monitoring the load dynamic characteristics of a stirring motor of the blanking hopper in real time in the stirring process; the slurry spraying quality parameters of the slurry are analyzed, and when the slurry spraying quality parameters reach the preset feeding standard, the slurry is conveyed to a slurry spraying pipeline to be matched with a cement mixing pile for pile forming work; when the guniting quality parameter exceeds the interval of the feeding standard, a real-time matching error is obtained; and generating a ratio correction instruction to correct the pulping ratio parameters. According to the invention, the dynamic closed-loop control of the pile forming quality of the cement mixing pile under the complex geological condition is effectively realized, and the industry bottleneck that the traditional open-loop proportioning system cannot respond to the slurry state change in real time is broken through.

Embodied within a realm of transformative innovation, a proactive Al-powered system emerges, seamlessly and autonomously managing the addition of chemical admixtures to control and adjust the composition of concrete during production and transport. The system comprises a concrete mixer tank, reservoirs for the chemical admixtures, a mechanism to dispense them as needed, sensors, and proactive Al-based control system, embodying the pinnacle of the proactive intelligent automation. Sensors track the concrete's properties and environmental conditions, and the proactive Al-based control system analyses the sensor data in real time to discern the precise type, quantity, and timing of chemical admixtures required to maintain the optimal properties of the concrete within the mixer tank, ensuring unwavering fidelity to the desired specifications. This autonomous Al-based system aims to produce concrete with minimal water addition, ensuring consistent concrete quality and reducing reliance on manual intervention.

The invention provides methods and compositions for treating wash water from concrete production with carbon dioxide. The treated wash water can be reused as mix water in fresh batches of concrete.

Material delivery systems as well as systems and methods relating thereto are disclosed. In an embodiment, the material delivery system includes a tank to hold water therein. In addition, the material delivery system includes a hopper to hold dry ingredients of the extrudable building material therein. Further, the material delivery system includes a mixing unit to receive water from the tank and dry ingredients from the hopper. The mixing unit includes an agitator to mix the water and the dry ingredients together to form the extrudable building material. Still further, the material delivery system includes a controller coupled to the agitator that is to: measure a load imparted to the agitator by the extrudable building material, add additional water to the mixing unit when the load is above a first threshold, and add additional dry ingredients to the mixing unit when the load is below a second threshold.

A concrete mortar mixing and stirring system belongs to the technical field of concrete production equipment. Aiming at the problems that an existing stirring system is difficult to accurately judge the mixing uniformity of concrete mortar and the quality is easily influenced due to excessive stirring or insufficient stirring, the system comprises a stirring tank, a vibration signal acquisition unit, a torque monitoring unit and a control unit, stirring blades in a stirring tank are driven by a motor, a vibration signal acquisition unit captures a tank body vibration signal, a torque monitoring unit detects the torque change of the motor, and a control unit decomposes the tank body vibration signal into a frequency domain signal and extracts a preset aggregate collision vibration frequency band energy value to generate a vibration energy sequence; and analyzing the torque change fluctuation intensity to generate a torque variation coefficient sequence, calculating a correlation coefficient sequence of the two, generating an adaptive shutdown threshold by a sliding time window, and cutting off a motor power supply when the correlation coefficient sequence is continuously lower than the threshold for a preset number of times. The device is mainly used for automatic stirring control of concrete mortar, and precise starting and stopping of the stirring process are achieved.

The invention discloses a method for preventing and controlling temperature stress cracking of a mass concrete structure. The method comprises the following steps: preparing low-heat high-toughness concrete; low-heat high-toughness concrete is adopted for pouring a mass concrete structure, and simulation calculation is conducted on a transient temperature field and time-varying temperature stress in the mass concrete construction process; and according to a simulation calculation result, in order to avoid temperature stress cracking in the mass concrete structure, the concrete mold entering temperature, the pouring procedure and the construction maintenance are adjusted in good time. The method can be used for preparing the material capable of reducing the adiabatic temperature rise peak value of the mass concrete and improving the tensile strength of the concrete, reasonably determining the pouring construction maintenance system of the mass concrete, and preventing the mass concrete structure from cracking due to the fact that the temperature stress exceeds the allowable tensile strength of the concrete in the construction process.

The invention relates to the technical field of cement prefabricated part production equipment, in particular to a cement prefabricated plate production device and method. Comprising a rack, and the rack is provided with a steel bar laying mechanism, a pouring and distributing mechanism, a precise vibrating mechanism, a forming and pressing mechanism and a conveying mechanism; the steel bar laying mechanism comprises a laying support, a moving assembly and a positioning assembly. The pouring and distributing mechanism comprises a storage bin and a grading and distributing assembly; the precise vibrating mechanism comprises a vibrating frame and a vibrating unit; the forming press-fit mechanism comprises a press-fit support, a press-fit driving assembly and a press-fit plate. According to the invention, the adjustable design of steel bar spacing is matched with the positioning assembly, so that the spacing of steel bars of different specifications is accurately adjusted, the steel bars are quickly placed at preset positions, and then the distribution amount of each area is adjusted according to the distribution of the steel bars through the grading distribution assembly to ensure sufficient slurry in the corresponding cement area; and the precise vibrating mechanism combines preset steel bar parameters to achieve differential vibrating, and the vibrating strength is enhanced in a steel bar dense area to guarantee sufficient slurry filling.

The invention discloses a self-healing concrete intelligent preparation method and system based on a dynamic optimization algorithm. The method comprises the following steps: S1, feeding: feeding materials to a premixing module by a raw material bin and a repairing agent carrier storage bin; s2, premixing: monitoring the water content of the aggregate fed into the raw material bin in real time by a premixing module, and dynamically adjusting the rotating speed of the premixing module through the water content; s3, gradient stirring: after premixing, feeding the materials into a gradient stirring module, and sequentially stirring; s31, firstly entering a low-speed paddle for stirring, monitoring the stirring resistance moment and the slurry viscosity distribution in real time, and dynamically adjusting the rotating speed of the paddle according to the torque-viscosity relationship; s32, performing ultrasonic homogenization on the materials subjected to low-speed stirring, monitoring the dispersity of each substance in low-speed stirring in real time through an identification camera, calculating the concentration gradient, monitoring the particle size distribution of a carrier at a discharge port of an ultrasonic homogenizer to obtain the particle size of a target aggregate, and dynamically adjusting the ultrasonic frequency according to the particle size of the target aggregate to obtain the target aggregate. And dynamically adjusting ultrasonic power and action time according to the concentration gradient.

The invention provides alkaline residue-based fluidized stabilized soil and a preparation method thereof, and belongs to the technical field of comprehensive utilization of solid wastes. The alkaline residue-based fluid solidified soil comprises the following components: alkaline residue, a curing agent, an admixture, water and an additive, wherein the mass ratio of the water to a dry basis is (0.85-1.45): 1; the mass ratio of the additive to the curing agent is (0.001-0.01): 1. The preparation device comprises an alkaline residue slurrying system, a fluid-state solidified soil slurry preparation system, a pumping pouring system and an intelligent control platform, and the operation control problem caused by high water content and large water content fluctuation of alkaline residues can be effectively solved by optimizing the slurrying mode and the technological process.

The utility model belongs to the technical field of concrete stirring equipment, and discloses a concrete stirring and mixing device with an automatic additive adding function, which comprises a rack and a stirring assembly arranged on the rack, the stirring assembly comprises a material storage barrel arranged on the rack; one end of the driving shaft is rotationally connected with the storage barrel, and the free end of the driving shaft penetrates through the top of the storage barrel; the crushing blade is arranged in the storage barrel, and the crushing blade is coaxially and fixedly connected with the driving shaft; the output end of the driving motor is fixedly connected with the driving shaft; according to the scheme, the driving motor drives the driving shaft and the crushing blades to rotate in the material storage barrel, and the shearing force generated by the blades of the crushing blades is utilized to crush and scatter agglomerated dry powder additives, so that the situation that a part of areas are not coagulated for a long time or the overall strength deviation is too large due to uneven dispersion of the retarders agglomerated with damp is avoided; the utility model solves the problem that the concrete additive is affected with damp and agglomerated.

The invention discloses early-strength, low-resilience and high-durability sprayed concrete and a preparation method thereof. The sprayed concrete is prepared from the following components: cement, an early-strength hardening auxiliary cementing material, coarse aggregate, fine aggregate, water, an additive, a fluoride-free alkali-free high-concentration accelerator, a rheology modifier, fibers and the like. The preparation method of the sprayed concrete mainly comprises two aspects. The method comprises the following steps: (1) proportioning optimization; and (2) functional materials are applied. By optimizing the glue material amount, the water-glue ratio and the sand ratio and adopting the small-particle-size coarse aggregate, the concrete has good workability and homogeneity, the risk of pipe blocking in the pumping and spraying process is reduced, aggregate rebound in the jet flow process is reduced, and the spraying operation effect is optimized. By applying the high-concentration fluoride-free alkali-free accelerator and the early-strength hardening auxiliary cementing material, the early strength of the concrete can be effectively improved, the volume deformation is reduced, and the long-term mechanical property and durability are improved. The fiber and the rheological modifier are added, so that the rheological property of the sprayed concrete can be further effectively improved, and the rebound rate is reduced. Rapid setting of the sprayed concrete and cooperative improvement of mechanical properties and long-term performance are achieved by optimizing the mixing ratio and applying novel functional materials.

Globally our environment comprises structures built to perform a meet different requirements including residential, commercial, retail, recreational and service infrastructure. Whilst, millions of tons of construction materials are deployed annually the quality control procedures in many instances have not changed to reflect today's demands. Accordingly, it would be beneficial to provide construction companies, engineering companies, infrastructure owners, regulators, etc. with means to automated testing / characterization of construction materials during at least one of its manufacture, deployment in construction and subsequent infrastructure life. It would be further beneficial for such automated methods to exploit self-contained data acquisition / logging modules allowing them to be employed with ease at the different points in the life cycle of a construction material and / or construction project.

The invention relates to the technical field of building thermal insulation material preparation and discloses a building thermal insulation material preparation device and method.The building thermal insulation material preparation device comprises a portal frame, a mixing barrel is fixed to the inner side of the portal frame through bolts, a middle filter plate is fixed to the inner wall of the mixing barrel through bolts, and an air cylinder is fixed to the top of the portal frame; according to the preparation device and the preparation method of the building thermal insulation material, after mortar raw materials are fed into the mixing barrel through the hopper, the air cylinder and the motor are started, and then the mortar raw materials are fed into the mixing barrel through the hopper; according to the mortar raw material mixing device, by arranging the air cylinder and the motor, the air cylinder and the motor are in linkage with the mixing assembly to conduct lifting movement and rotation in the mixing barrel, mortar raw materials are mixed and stirred in the process, meanwhile, under cooperation of the middle filter plate, blocks in the raw materials are extruded and crushed through the mixing assembly, and then the mixing uniformity of the mortar raw materials is comprehensively improved.

Apparatus for real time water content and water cement monitoring on a ready-mix concrete truck includes at least one real time moisture measurement module or sensor configured tosense continuous real time moisture measurements of a batch of wet cement loaded into a rotating drum of a ready-mix concrete truck; andprovide signaling containing information about the continuous real time moisture measurements sensed.The apparatus may include either a hatch door of the rotating drum of the ready-mix concrete truck, or the rotating drum of the ready-mix concrete truck, or the ready-mix concrete truck itself.

The invention provides grouting and filling equipment for water-preserved mining of a coal mine, and relates to the technical field of mining equipment, and the grouting and filling equipment comprises a base frame piece, a grouting guide pipe piece, a slurry post-processing assembly and a plugging driving assembly. A plurality of groups of outer ring parts with hole wall pressure sensors are arranged on the outer wall of the grouting guide pipe piece, and a pipe end micro sensor is arranged at the grout outlet end; the inserting and pulling driving assembly drives the stirring assembly to push the outer ring part through the motor, and inserting and pulling of the grouting guide pipe piece are controlled. During working, the guide pipe piece is inserted into a grouting hole to a goaf, the sensor monitors rock mass pressure, temperature and sound wave signals in real time, the grouting pressure is dynamically adjusted in combination with formation resistance, and grout fluid channeling or insufficient filling is avoided. Through precise pressure regulation and automatic insertion and extraction, the problems of material waste, underground water pollution and insufficient goaf filling in traditional grouting are solved, and the environmental protection property and the engineering efficiency of water-preserved mining are remarkably improved.

The invention provides methods and compositions for treating wash water from concrete production with carbon dioxide. The treated wash water can be reused as mix water in fresh batches of concrete.

The invention relates to a low-carbon phase change energy storage UHPC (Ultra High Performance Concrete) and a preparation method thereof. The low-carbon phase change energy storage UHPC comprises the following components in parts by weight: 1400 parts of cement, 320-400 parts of fly ash, 200-280 parts of silica fume, 400-480 parts of water, 1200 parts of machine-made sand, 1700 parts of phase change aggregate, 2 parts of modified carbon fiber, 20 parts of a polycarboxylic acid high-performance water reducing agent, 2 parts of a composite thickening time control agent and 1 part of sodium polyacrylate. The preparation method comprises the following steps: weighing materials; preparing concrete 1: preparing a mixed solution 1; stirring the concrete 1; preparing concrete (2); preparing mixed liquid (2); stirring the concrete (2); and pouring concrete, vibrating and curing. According to the method, UHPC shrinkage control is carried out by adopting a multi-dimensional crack control method, and penetrating cracks and deep cracks are prevented from being generated in a concrete structure; the provided phase change energy storage UHPC has the heat storage and release capacity, the indoor temperature can be adjusted, and resource energy consumption is reduced.

The invention belongs to the technical field of tunnel engineering, and discloses a concrete mixing and spraying device for tunnel construction and a using method of the concrete mixing and spraying device for tunnel construction. The stirring rod part is positioned in the middle of the stirring tank; the scissor lift part is mounted above the stirring rod part; the circumferential surface displacement part is mounted above the scissor lift part and comprises a rail groove rotating disc and a screw rod sliding rail; the concrete spraying pipe grabbing height and angle adjusting part is mounted on a bearing block of the lead screw sliding rail and comprises a rotary arm, a first telescopic mechanism and a concrete spraying pipe grabbing clamp which are sequentially connected from bottom to top; the concrete nozzle grabbing part is installed above the first telescopic mechanism and used for adjusting the angle of a concrete nozzle so as to be aligned with the tunnel slope to conduct concrete spraying. The problems that in tunnel construction, the concrete spraying precision is not high, the concrete stirring efficiency is low, the requirement for labor force of construction operation is large, and the flexibility is low can be solved.

The invention relates to the technical field of self-thermal-insulation mortar, in particular to self-thermal-insulation mortar and a preparation method thereof. Comprising the following components: Portland cement, a gradient graphene aerogel skeleton, metal organic framework nanoparticles, photo-thermal-phase change coupling microcapsules, magnetic field orientation Fe3O4 nanosheets, self-repairing microcapsules, silicon carbide nanowire aerogel, a water reducing agent and a fiber reinforced material. The gradient graphene aerogel skeleton, the photo-thermal-phase change coupling microcapsules and other materials with excellent thermal insulation performance are introduced, and a multi-layer thermal insulation structure is constructed. The gradient graphene aerogel skeleton has extremely low heat conductivity coefficient and high porosity, and can effectively prevent heat transfer; the photo-thermal-phase change coupling microcapsules can absorb and release a large amount of heat in the phase change process, and the heat preservation effect of the mortar is further improved.

The invention provides multi-proportion adjustable cement soil production and manufacturing equipment and a manufacturing method, and relates to the technical field of cement soil production, the multi-proportion adjustable cement soil production and manufacturing equipment comprises a mixer, the top of the mixer is integrally connected with a rotary bearing table, and the bottom of the mixer is integrally connected with a discharging pipe; wherein the rotary bearing table is provided with a rotary ring, the top of the rotary ring is integrally connected with a ring plate, the outer edge of the ring plate is provided with a tooth block, the tooth block is meshed with a gear arranged on a motor, and the motor is arranged on the rotary bearing table so as to drive the rotary ring to rotate through the meshing effect between the gear and the tooth block. Compared with the prior art, the invention has the following beneficial effects: 1, the unique combined design of the stirring plates and the stirring blades is adopted, so that the space occupation of the stirring structure in the mixer is obviously reduced; 2, the production process is greatly simplified, and a plurality of intermediate links are omitted; and thirdly, in combination with the training, tuning and testing of the XGBoost model, the optimal raw material proportioning scheme under different engineering conditions can be accurately predicted.

A concrete mixer vehicle includes a chassis, a cab, a drum system, and a control system. The drum system includes a mixer drum coupled to the chassis and a drum driver configured to rotate the mixer drum. The control system includes an operator interface disposed within the cab and one or more processing circuits. The operator interface includes a display and a joystick. The one or more processing circuits have programed instructions to control the display to provide a graphical user interface. The graphical user interface provides a graphical representation of the mixer drum, a settings button, a temperature output, a pressure output, a slump output regarding a slump of contents within the mixer drum, a speed output regarding a rotational speed of the mixer drum, a revolution counter regarding a number of revolutions of the mixer drum, and a mode indicator regarding an operational mode of the drum system.

The invention provides compositions and methods directed to carbonation of a cement mix during mixing. The carbonation may be controlled by one or more feedback mechanisms to adjust carbon dioxide delivery based on one or more characteristics of the mix or other aspects of the mixing operation.

The invention provides a concrete production system which comprises a feeding device, a material distributing device, a concrete stirring device and a control device and is characterized in that the concrete stirring device comprises three stirring assemblies, the material distributing device is used for sequentially conveying materials conveyed by the feeding device to each stirring assembly, and the control device is used for controlling the material distributing device to control the stirring assemblies. The control device comprises a concrete process control terminal, a data transceiving network, a server, a remote control terminal and a monitoring device, and the monitoring device is used for detecting the working states of the feeding device and the concrete stirring device; the data transmit-receive network, the server, the remote control terminal and the monitoring device are respectively in information connection with the process control terminal. By arranging the three stirring assemblies, concrete can be stirred in a time-sharing mode, the problem that a system is shut down during discharging and cleaning of a traditional single stirring tank is solved, and the production efficiency of the concrete is greatly improved.

The invention belongs to the technical field of workability detection, regulation and control of fresh concrete, and discloses a workability detection, regulation and control method and system for concrete in a mixer truck, and the method comprises the following steps: installing a rheological shearing device and a temperature testing device in a barrel of the mixer truck, and driving a shearing rod piece to shear in the concrete by utilizing the rotation of the barrel, the rheological property of the concrete can be directly tested, and the working property is obtained through the relationship between the rheological property and the working property. The test is started before the concrete mixer leaves the factory, the concrete rheological property is continuously measured in the transportation process, the change degree and trend of the concrete rheological property are evaluated, an evaluation result is compared with a preset limit value, and when the evaluation result reaches and exceeds the limit value, an alarm is immediately given and an admixture is automatically supplemented for regulation and control. The rheological property of the concrete can be continuously monitored, finely adjusted and pre-adjusted in real time in the whole transportation process, so that the concrete can be kept in a required set interval range. According to the invention, the directness, real-time performance and accurate regulation and control of workability detection of concrete during transportation can be realized.

The present invention relates to the technical field of mortar conveying, and in particular to a mortar conveying system, which includes a feed hopper, a feeding pipe connected to the bottom of the feed hopper, and a bracket fixed on the surface of the feed hopper. The system further includes: a auger rotatably connected to the inner wall of the feeding pipe, a support block fixed to the top of the bracket and a support mechanism installed thereon, and a servo motor fixed to the top of the support block. The present invention facilitates the disassembly and cleaning of the conveying pipe by the staff. In addition, this conveying system can not only break and stir the agglomerated mortar, but also reduce the blockage inside the discharge pipe, solving the problem that after the use of some current mortar conveyors, it is inconvenient for the staff to clean the conveying pipe and the auger, thus easily affecting the subsequent conveying efficiency, and solving the problem that when some current mortar conveyors are in use, the agglomerated mortar in the feed hopper that is not transported away in time easily affects the smoothness of the subsequent conveying operation.

The utility model discloses a telescopic concrete pouring auxiliary device for a squat silo top plate, which comprises a rotary driving mechanism, a telescopic mechanism moving in the radial direction is arranged on the rotary driving mechanism, and a pouring silo main body is arranged on the telescopic mechanism; the telescopic mechanism comprises a fixing frame and a sliding plate, the fixing frame is connected with the rotary driving mechanism, the sliding plate is in sliding fit with the fixing frame in the radial direction, a telescopic driving assembly and a sliding limiting assembly are arranged between the fixing frame and the sliding plate, and the sliding plate is connected with the pouring bin body through a first frame. A synchronous stirring assembly is arranged between the fixing frame and the pouring bin body. The utility model has the beneficial effects that the range of pouring operation can be effectively expanded, and accurate positioning pouring can be carried out according to on-site pouring conditions or requirements; and the stirring rods can be synchronously driven to rotate, concrete in the bin is stirred, and the uniformity of the concrete is kept.