84results about "Pretreatment control" patented technology

The invention discloses spatial free distribution micro-scale cage-shaped unit interlocking confined concrete and a preparation method thereof.The preparation method of the spatial free distribution micro-scale cage-shaped unit interlocking confined concrete comprises the steps that a concrete premix, a pouring formwork and a plurality of micro-scale cage-shaped units are prepared; the concrete premix and the multiple micro-scale cage-shaped constraint units are mixed, and pouring is completed in the formwork; and curing and hardening the concrete premix in the pouring template and a concrete reinforcing framework formed by interlocking the plurality of cage-shaped constraint units to obtain the spatial free distribution micro-scale cage-shaped unit interlocking constraint concrete. The cage-shaped constraint units with multiple concrete component scales are doped in the concrete premix, the spatial free distribution micro-scale cage-shaped unit interlocking constraint concrete is prepared, and the mechanical property of a concrete member can be improved.

The invention relates to the technical field of production of fused zirconia corundum bricks, in particular to a homogenizing and mixing device for fused zirconia corundum bricks, which comprises a mixing box, a hopper, a connecting piece and a mixing cylinder, a feed port and an opening are respectively formed in opposite sides of the outer wall of the mixing cylinder, and a filter screen is mounted on the opening. According to the homogenizing and mixing device for the fused zirconia corundum bricks, raw materials are stirred in all directions through a mixing barrel on a connecting piece, meanwhile, a second driving source drives a supporting frame to rotate around a connecting plate in the axial direction, the connecting piece slides in a center-edge-center reciprocating mode along a curve-shaped limiting sliding rail, and the raw materials are uniformly mixed; the stirring part circulates between the central area of the mixing cavity and the edge area of the inner wall, so that the mixing area of raw materials is increased, and stirring dead angles are avoided.

The invention belongs to the technical field of crushing equipment, and particularly provides a concrete crushing and screening device and a recycled asphalt concrete production process. The concrete crushing and screening device comprises a multi-stage vibrating screen, a first-stage crusher and a second-stage crusher, and the multi-stage vibrating screen can screen concrete materials into at least three types according to the particle size in advance. In the working process, powder materials which do not need to be crushed repeatedly are directly discharged through the corresponding discharging ports and do not enter the first-stage crusher and the second-stage crusher any more, energy consumption is reduced, and excessive crushing is avoided. Coarse aggregate with large particle size firstly enters the primary crusher through the corresponding discharge port, and then enters the secondary crusher through the discharge channel for secondary crushing. The graded crushing design ensures that the coarse aggregate is fully crushed, the mixing of substandard aggregate or powder materials in a final product is reduced, and the grading uniformity of the recycled aggregate and the quality stability of the product are improved.

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 intelligent manufacturing control, in particular to an air cooling control method and system for multi-aggregate pre-cooling. According to the scheme provided by the invention, classified and bin-divided independent pre-cooling is performed according to different aggregate particle sizes and pre-cooling characteristics, so that the cooling effect is good, the pre-cooling time is saved, and the working efficiency is improved. Furthermore, through periodic dynamic pre-cooling control and adjustment, in combination with real-time monitoring of the aggregate temperature of each bin and dynamic calculation of required cooling capacity distribution air cooling, synchronization of the cooling process of each aggregate is ensured, and the pre-cooled aggregates with different particle sizes and different characteristics synchronously reach the preset delivery temperature within the target time. Meanwhile, the scheme of the invention has good robustness for interference factors such as initial temperature fluctuation of the aggregate, environment temperature change and the height of the stock bin position, can automatically adjust the distribution strategy, and keeps the stability of the pre-cooling effect.

The invention belongs to the technical field of oil well cementing construction, and discloses a dry-mixed material dust removal device and stirring equipment. The dry-mixed material stirring equipment comprises a support, a stirring tank, a feeding hopper and a dry-mixed material dust removal device, the stirring tank is arranged on the support and used for stirring dry-mixed materials, and a feeding port is formed in the stirring tank; the feeding hopper penetrates through a feeding hole of the stirring tank; the dry-mixed material dust removal device comprises a vibration generator, a dust blocking piece and a dust suction assembly, the vibration generator is fixed to the outer wall of the feeding hopper, and the vibration generator can naturally vibrate and drive the dry-mixed material passing through the feeding port to vibrate so as to prevent the dry-mixed material from blocking the feeding port; the dust blocking piece encloses the feeding hopper, an opening can be formed between the dust blocking piece and the feeding hopper, and a dry-mixed material enters the stirring tank through the opening; the dust collection assembly is connected with the dust blocking piece and used for sucking dust at the opening so that dust at the feeding port can be effectively treated when the dry-mixed materials are poured into the stirring tank.

A quality control system of the invention allows controlling, image analysis and continuous visual monitoring of aggregates and sand processing, and physical properties and workability of fresh concrete and concrete mixes, which are manufactured from the aggregates and sand, and then transported to construction sites and used there for construction purposes. The system of the invention comprises visual monitoring devices (100), stationary or mobile, installed or remotely used at quarries, concrete plants, in concrete trucks and at the construction sites. The method for continuous visual monitoring of the aggregates, sand and concrete is based on image or video processing and analysis of the aggregates and sand, fresh concrete, concrete mixes or precast concrete, the concrete slump levels, segregation and bleeding, homogeneity of the mixture and consistency.

The invention discloses an all-component coal gangue concrete preparation system which comprises a screening machine, the screening machine is connected with a first fine material gangue bin, and the screening machine is further sequentially connected with a mineral separation system, a crusher, an activating and calcining system, a grinding and material forming system and an intelligent batching system. The mineral separation system is further sequentially connected with another crusher and a third-level screening machine, the third-level screening machine is connected with a first fine material gangue bin, the third-level screening machine is further connected with a second medium material gangue bin and a third coarse material gangue bin, and the first fine material gangue bin, the second medium material gangue bin and the third coarse material gangue bin are all connected with the intelligent batching system. The intelligent batching system is connected with a mixing and stirring system. The invention further discloses a preparation method of the all-component coal gangue concrete. According to the all-component coal gangue concrete preparation system and method, the comprehensive utilization rate of coal gangue is increased, the using amount of a cement cementing material is reduced, and the mine production cost and the gangue disposal cost are reduced.

The invention relates to the technical field of blast hole blocking devices, and discloses a novel blasting blast hole blocking device which comprises a bottom plate, a plurality of hydraulic rods are fixed to the upper surface of the bottom plate, and stirring assemblies are arranged at the driving ends of the hydraulic rods; the stirring assembly comprises a stirring bin, and the lower surface of the stirring bin is fixed to the driving end of a hydraulic rod; and the feeding assembly is arranged on the stirring bin and comprises a feeding pipe, the bottom end of the feeding pipe penetrates through the stirring bin, a first hopper is fixed to the upper surface of the feeding pipe, a first baffle is slidably connected to the interior of the first hopper, and a second baffle is slidably connected to the interior of the first hopper. Through cooperation of internal structures of the feeding assembly, the cooperative control effect of automatic lifting and timing sequence-based precise feeding of a material distributing hopper and double baffles is achieved, meanwhile, a motor drives a lifting rope to drive an arc-shaped plate and a protruding block to move, and the effect that raw materials can be preliminarily dispersed while the feeding speed is controlled is achieved.

A mobile batch plant comprises a vehicle chassis, a powerplant supported by the vehicle chassis, a hopper for storing a premix that is a preblended mixture of aggregate material and cement, a water tank for storing water, a water replenishment hose connectable to the water tank for replenishing the water in the water tank, a mix auger for mixing the premix and water to form shotcrete or concrete and a swivel chute connected to the mix auger to deliver the shotcrete or concrete.

The application discloses a kind of high-strength epoxy polymer modified cement mortar preparation equipment and preparation method thereof, including mixing tank main body, detachable installation is installed on the top surface of mixing tank main body, the center of top surface of top cover is fixedly installed with stirring assembly, top cover top surface right side is fixedly installed with material adding assembly, the left side of mixing tank main body is fixedly installed with drying assembly.The application is provided with material adding assembly, first, the cover is turned around second rotation axis, at this time, the modified raw materials are placed in the two cavities of material adding box, the modified raw materials enter the hard connecting pipe inside through the feed slot on the surface of hard connecting pipe, and finally fall into the second material hopper, and in the process of hard connecting pipe rotation, the modified raw materials can be scattered from the first discharge pipe to the surrounding, so as to fall on the surface of mortar raw materials, so as to ensure that the modified raw materials can be fully mixed with existing raw materials, shorten the mixing time, so as to improve the practicability of the device.

The invention provides a stirring structure and a fluidized stabilized soil pulping station. The stirring structure comprises a stirring frame, a stirring cavity fixedly arranged on the stirring frame, a stirring assembly rotationally arranged in the stirring cavity, a first driving mechanism for driving the stirring assembly to rotate, and a second driving mechanism for driving the stirring assembly to be separated from the stirring cavity; the stirring assembly comprises a stirring cavity and a stirring assembly, the stirring cavity is provided with a hemispherical bottom surface, the stirring assembly comprises a stirring shaft and a hollow hemispherical stirring part which is concentrically and fixedly connected with the stirring shaft and matched with the hemispherical bottom surface, and a plurality of filtering holes are formed in the stirring part. And the grinding action is realized in the pulping process by matching the spherical surface, so that the particle size is smaller, and mud and water are more uniformly mixed.

A premixing method of expandable polystyrene particles and sodium silicate solution, characterized in that a premixing device is provided above a drying stirrer and is connected with an expandable polystyrene particle bin and a sodium silicate solution bin respectively, when it is needed to premix expandable polystyrene particles and sodium silicate solution, expandable polystyrene particles are provided, and according to the volume ratio, 0.3-0.4 times of the volume of the expandable polystyrene particles of sodium silicate solution, while spraying industrial sodium silicate solution in the cylinder by starting the atomizing nozzle, the expandable polystyrene particles are carried by the pressurized gas and sprayed to the sprayed sodium silicate solution, and the premixing of the expandable polystyrene particles and the sodium silicate solution is completed in the cylinder of the premixing device. The method provided by the application can greatly reduce the input amount of sodium silicate solution.

The present application relates to the field of solidifying agent and solidifying soil stirring technology, multi-source waste mud solidifying agent and mobile temperature control stirring device, the multi-source waste mud solidifying agent includes industrial solid waste, cement-based material, fiber, composite activator, active material and auxiliary agent. Industrial solid waste is made by mixing one or more of steel slag, fly ash, slag, desulfurization gypsum and alkali residue, the composite activator includes one or more combinations of sodium sulfate, sodium silicate, sodium hydroxide and calcium hydroxide. The mobile temperature control stirring device includes a mobile car, a soil stirring chamber, a solidified soil stirring chamber, a solidifying agent stirring chamber, a fiber treatment chamber, a temperature control water tank, a pumping pipeline and a PLC control system. The solidified soil in the application has the advantages of high strength, strong crack resistance and stable performance. The invented mixer is more fully stirred and has more complete functions, is mobile, covers all portable application scenarios, can mix different requirements of flow state solidified soil, and has the advantages of convenient construction and mobility.

The invention discloses a civil engineering concrete mixer feeding device convenient to clean, and particularly relates to the technical field related to concrete.The civil engineering concrete mixer feeding device comprises a base, a steel structure frame is fixedly installed in the middle of the upper end of the base, a pouring funnel is fixedly installed on the upper portion of the steel structure frame, and a conveying mechanism is arranged on the lower portion of the steel structure frame; a screening mechanism is arranged between the conveying mechanism and the pouring funnel, and a cleaning mechanism is further arranged on the upper side of the conveying mechanism on the front portion of the steel structure frame. According to the convenient-to-clean concrete mixer feeding device for civil engineering, concrete raw materials fall on the surface of a screening grid, stone blocks which do not conform to specifications can be screened out, and due to the synchronous rotation of a pushing roller and a spiral stirring roller, caked sand or concrete can be scattered while the caked sand or concrete is scattered; and the screened stones are pushed backwards into the receiving box and are treated in a centralized manner, so that the quality of concrete produced by the concrete mixer is improved, and the practicability of the device is also improved.

The application belongs to the technical field of concrete feeding, and particularly relates to a solid waste cementitious material concrete feeding device which solves the problems of poor environmental protection and insufficient functionality. The device comprises a main body, a feeding assembly for feeding assistance movably connected to one end of the main body, a dust falling assembly installed on the top of the main body for dust falling, and a uniform distribution assembly installed at the bottom of the dust falling assembly for material distribution. The dust source is treated through the dust falling assembly, a dust outlet and other structures. The dust falling baffle is provided with a built-in double straight shaft air inlet system. A servo motor drives a gear set to rotate the straight shaft, so that the air inlet block generates a negative pressure airflow field. The air inlet block cooperates with an atomizing nozzle to form a gas-liquid mixing adsorption effect, so that dust is intercepted at the material inlet. A venturi structure dust outlet utilizes fluid negative pressure effect to direct the unadsorbed particles into a bag-type dust collector, thereby constructing a double environmental protection barrier and completely solving the problem of dust overflow pollution of the traditional device.

The invention relates to a walking stirring device, and relates to the technical field of stirring machinery, the walking stirring device comprises a stirring vehicle body, the lower end of the stirring vehicle body is provided with a transmission shaft, two ends of the transmission shaft are provided with wheels, the transmission shaft is fixedly connected with a first chain wheel, and the lower end of the stirring vehicle body is provided with a flywheel; a first chain is arranged between the flywheel and the first chain wheel in a sleeving mode, a stirring shaft is rotationally connected to the stirring vehicle body, an auger is installed on the stirring shaft, a second chain wheel is fixedly connected to the stirring shaft, and a third chain wheel and a driving part used for driving the third chain wheel to rotate are installed at one end of the stirring vehicle body. A second chain is arranged between the second chain wheel and the third chain wheel in a sleeved mode, and a transmission assembly used for connecting the second chain wheel with the flywheel is arranged between the second chain wheel and the flywheel. The method has the effects of reducing the concrete transportation cost and improving the energy utilization efficiency.

The invention belongs to the technical field of concrete, and particularly relates to cement concrete mixing equipment which comprises a mixing barrel, the mixing barrel comprises two circular hollow cylinders, blocking covers are fixedly connected to the front portions and the rear portions of the two circular hollow cylinders, two feeding pipes are jointly arranged at the upper ends of the two circular hollow cylinders, and two driving gears meshed with each other are rotationally connected into the blocking cover on the front side; the rotating mechanism comprises a rotating column, a plurality of rotating plates are fixedly connected to the peripheral side of the rotating column, an extension plate is slidably connected to the interior of the first mounting groove, a plurality of springs are mounted on the extension plate, an abutting strip is fixedly connected to the rear end of the front side blocking cover, a mounting circular plate is fixedly connected to the rotating column, and a plurality of stirring assemblies are mounted on the mounting circular plate. An electrically-controlled discharging pipe is mounted on the lower side of the rear side blocking cover, and an anti-blocking assembly is mounted in the discharging pipe; concrete raw materials can be circularly mixed through the two stirring mechanisms rotating in a staggered mode and the multiple stirring assemblies, the stirring effect is improved, and meanwhile stockpile blockage of the discharging pipe is avoided in cooperation with the anti-blocking assembly.

A method and apparatus for producing building aggregate comprising the steps of: feeding a first material and a second material to a processing device, where the first material is a native material and the second material is a recycled material; and cleaning the first material together with the second material in at least one cleaning machine of the processing apparatus.

The invention relates to a concrete processing production line which comprises a stirring tank, a stirring shaft, a feeding channel, a material collecting box, a filter plate and a push plate, the stirring shaft is rotationally connected to the inner wall of the stirring tank, the stirring tank is provided with a feeding port, the lower end of the feeding channel communicates with the feeding port, the material collecting box is provided with a material collecting port, the material collecting port penetrates through the material collecting box, and the filter plate is arranged in the material collecting box. The upper end of the feeding channel is communicated with the material collecting opening, the filter plate is fixedly connected to the inner wall of the material collecting opening, the height of the filter plate is larger than that of the feeding channel, the filter plate is provided with a material leaking opening, and the push plate slides in the material leaking opening. The material leakage opening filters large-particle raw materials onto the filter plate, and the push plate slides in the material leakage opening to dredge the material leakage opening, so that small-particle raw materials stacked on the filter plate enter the stirring tank, the large-particle raw materials move to the two ends of the filter plate, the probability of blockage of the material leakage opening is reduced, follow-up cleaning of the large-particle raw materials is facilitated, and the cleaning efficiency is improved.

The invention discloses a three-dimensional integrated double-liquid slurry A liquid pulping system and method, the system comprises a lower-layer frame and an upper-layer frame which are distributed in the vertical direction, the lower-layer frame and the upper-layer frame jointly form a three-dimensional integrated carrier, and the lower-layer frame is integrated with a storage container and a conveying pump assembly; the storage container is used for temporarily storing raw materials and intermediate slurry in the pulping process of the liquid A, and the conveying pump assembly is communicated with the storage container to realize material conveying; a pulping assembly, a water supply assembly and an operation assisting assembly are integrated on the upper-layer frame, the pulping assembly is used for completing mixed pulping of all components of the liquid A, the water supply assembly is communicated with the pulping assembly and the storage container to provide a water source needed by pulping and cleaning, and the operation assisting assembly is used for assisting personnel in operating and maintaining the upper-layer frame; the problems that traditional split type pulping equipment is large in occupied area, complex in installation, long in debugging period and high in power consumption are solved.

The invention provides a continuous stirring and feeding machine for preparing modified pyrolytic carbon environment-friendly concrete, and relates to the technical field of concrete processing, the continuous stirring and feeding machine comprises a first rack, a second rack, a pyrolytic carbon feeding and pre-dispersing assembly, a multi-material premixing assembly and a continuous forced stirring assembly, the pyrolytic carbon feeding pre-dispersing assembly comprises a pyrolytic carbon storage bin, a spiral feeding pipe and a pretreatment box, and the pyrolytic carbon storage bin is fixed to the top of the first rack. By arranging the pyrolytic carbon feeding pre-dispersing assembly and the multi-material premixing assembly, materials can be fully dispersed, the mixing quality is improved, pyrolytic carbon is screened and filtered through a metal screening and filtering screen plate in the pretreatment box, the pretreatment box is matched with left-right reciprocating shaking, efficient dispersion is achieved, and it is avoided that caking affects the concrete performance; a plurality of materials are sheared and crushed by a shearing sheet in the high-speed shearing premixing tank, and are forcibly stirred by a wear-resistant blade of the horizontal stirring barrel subsequently, so that the materials such as pyrolytic carbon, cement and gravel are mixed more uniformly.

The invention relates to the technical field of intelligent manufacturing, in particular to a concrete mixing system based on aggregate precooling and a control method thereof. According to the scheme provided by the invention, the pre-cooling storage is arranged into the plurality of isolated aggregate bins, and cooperative control is carried out through various different refrigeration equipment, so that the pre-cooling storage can carry out targeted and independent pre-cooling and cooling on various aggregates such as sand, large stones and small stones according to the characteristics of the aggregates, the cooling effect is good, the pre-cooling time is saved, and the working efficiency is improved. Meanwhile, the aggregate conveying system, the pre-cooling system and the stirring system are integrally arranged, system function modularization is highly integrated, transfer equipment is omitted, and the occupied area is reduced. According to the scheme, the aggregate pre-cooling and batching integrated function is achieved through the pre-cooling storage, the pre-cooling storage can directly replace batching equipment of a mixing plant, secondary heat absorption in the conveying, lifting and temporary storage process after aggregate cooling in a traditional technology is also avoided, the loss of cooling capacity is greatly reduced, and energy consumption is effectively reduced.

The invention relates to the field of material stirring and treatment, and provides road phosphogypsum homogenizing and mixing equipment and a mixture homogenizing and mixing method. The road phosphogypsum homogenizing and mixing equipment comprises: a phosphogypsum feeding bin for adding phosphogypsum as a main material into a production line; the additional material bin is positioned at the upstream of the phosphogypsum feeding bin or is arranged close to a discharge port of the phosphogypsum feeding bin, and is used for adding an additional auxiliary material into the production line to form a mixed material with the main material; the crushing assembly is positioned at the downstream of the ardealite feeding bin and is used for reducing the particle diameter of the mixed material; and the homogenizing assembly is positioned at the downstream of the phosphogypsum feeding bin and is used for improving the mixing uniformity of the mixed materials. The road phosphogypsum homogenizing and mixing equipment provided by the invention can solve the problems that in the prior art, phosphogypsum, a modifier, a cementing material and other additives are not uniformly mixed, the reaction is insufficient, the blanking is easy to block, the water content of phosphogypsum is too high, the phosphogypsum cannot be compacted, the harmful substance treatment effect is poor, and the secondary environment pollution risk is high.

The application discloses a dust-free preparation method of waste recycling concrete, relates to the technical field of waste recycling concrete, and solves the problem of much dust when a transmission device transports waste, and comprises a conveying belt, a dust collection device and a turnover device, a control cabinet and a crushing box with a top inlet and a bottom outlet are arranged at the inlet of the conveying belt, the dust collection device is arranged at the inlet of the conveying belt and used for absorbing dust and reducing the dust content in the waste, and the turnover device is arranged in the dust collection device and used for turning over the waste on the conveying belt, dust is collected at the inlet of the conveying belt through the dust collection device, and the waste is turned over through the turnover device, so that the dust mixed in the waste can be cleaned out, and the dust removal efficiency of the dust collection device is improved.

The invention belongs to the technical field of civil engineering material preparation, and particularly relates to a premixed flow state solidified soil dust suppression vertical stirring device which comprises a support, the inner side wall of the support is fixedly connected with a box body, the upper surface of the box body is fixedly provided with a regulation and control mechanism, and the side face of the box body is fixedly connected with a stirring bin through a connecting frame. An inner cylinder is fixedly mounted in the stirring bin, a dust suppression mechanism is embedded in an interlayer between the stirring bin and the inner cylinder, and a sliding groove in sliding connection with the stirring mechanism is formed in the inner side wall of the inner cylinder; through the arranged regulation and control mechanism, a large amount of dust can be generated in the process of stirring the flow-state solidified soil, the health of operators and the surrounding environment are influenced, water spraying during stirring is a main dust suppression means, and through the regulation and control mechanism, the water spraying flow speed can be increased in the initial stage of feeding or the stage of large dust generation amount, and powerful dust suppression is carried out; after the materials are fully wetted, the flow speed is reduced, excessive water adding is avoided, and accurate dust suppression can be achieved by spraying water according to needs.

The invention discloses a soft clay stirring device, and belongs to the technical field of soft clay stirring, the soft clay stirring device comprises a stirring barrel, a feeding bin is fixedly arranged on the top of the stirring barrel, a first motor is fixedly arranged on one side of the feeding bin on the top of the stirring barrel, and a material shaking mechanism is arranged in the feeding bin; a first motor is fixedly arranged on one side of the stirring barrel and is in transmission connection with the material shaking mechanism, a second motor is fixedly arranged on one side of the stirring barrel, a stirring mechanism is rotationally arranged in the stirring barrel and is in transmission connection with the second motor, and a discharging bin is fixedly arranged at the bottom of the stirring barrel; through optimal design of a feeding mechanism, a stirring mechanism, a sealing mechanism, a discharging mechanism and the like and in combination with precise regulation and control of an intelligent control system, the problems that when a traditional stirring device treats soft clay, stirring is insufficient, blocking is prone to occurring, efficiency is low, and operation is tedious are effectively solved, and the quality, efficiency and intelligent level of soft clay stirring operation are remarkably improved.

The application discloses a kind of solid waste-based cementitious material concrete production device and production method thereof, belong to concrete production technical field, by the first screen hole, second screen hole and third screen hole on sieve plate, can be classified screening to aggregate, different particle size aggregate can respectively fall into three collection bins in collection box, when concrete is proportioned, open the weighing bin of the corresponding three collection bin positions at the bottom of collection box, so that the weighing bin can weigh different particle size aggregate, open the material valve at the bottom of weighing bin after weighing, so that aggregate is concentrated in turnover box, driven gear is rotated by fixed shaft with multiple stirring rods, so that the stirring rod mixes and processes aggregate, realizes the purpose of aggregate premixing, so it can be according to the particle size of aggregate classification screening to concrete quantitative proportioning, improve the density of aggregate and overall concrete, prevent the formation of internal pore defects, greatly improve the durability of concrete.

The invention relates to the field of stirring equipment, in particular to a polyformaldehyde fiber concrete anti-agglomeration device based on fiber pretreatment and gradient stirring, which comprises a pre-stirring device and a stirring device, the pre-stirring device comprises a stirring box, a stirring device is arranged in the stirring box, the top of the stirring box is provided with a first feed port for feeding POM fiber, and the stirring device is provided with a second feed port for feeding POM fiber. The top of the stirring box is further provided with a second feeding port used for feeding dry concrete, the bottom of the stirring box is provided with a discharging pipe, and the discharging end of the discharging pipe is connected with the stirring device. A pretreatment liquid spraying device is further arranged above the first feeding port, the surface characteristics of the fibers are fundamentally changed through the pretreatment liquid spraying device, and the problem of agglomeration of the fibers caused by hydrophobic and electrostatic effects is thoroughly solved.

A premixing device includes a cylinder, a bottom plate, and a cover plate. The top diameter of the cylinder is larger than its bottom diameter, and the bottom surface is inclined to the axis. The interior of the cylinder has multiple sets of annular protrusions. The cover plate has a hole at its axis through which a conduit for connecting an atomizing nozzle for spraying industrial sodium silicate solution passes. The atomizing nozzle can be detachably connected to the conduit at the axis of the cover plate. The cover plate has a hole on one side for connecting a conduit for an L-shaped nozzle for spraying expandable polystyrene particles. The conduit of the L-shaped nozzle can be welded to the cover plate. The outlet of the L-shaped nozzle faces the axis of the cover plate. A reflector plate coaxial with the cylinder is located at the axis of the bottom plate. A feed pipe extending into the inner cavity of a drying mixer is detachably installed at a lower position on the bottom plate. The premixing device provided by this invention can significantly reduce the amount of sodium silicate solution required.