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199results about "Ingredients proportioning apparatus" patented technology

Proactive ai-driven concrete-production system

PCT designated stage expiredWO2025109588A1Data processing applicationsPretreatment controlChemical admixtureEnvironmental resource management
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.
Owner:SENSOLYZER ADVANCED SENSING SYST LTD

Methods and compositions for assessement of concrete carbonation

Provided herein are methods and compositions for determining and reporting carbon dioxide sequestered and / or carbon dioxide avoided in operations involving concrete, including concrete raw material transport, concrete production, and concrete use.
Owner:CARBONCURE TECHNOLOGIES INC

Ultra-high performance concrete intelligent preparation system and control system thereof

The invention relates to the technical field of intelligent manufacturing, and particularly provides an intelligent ultra-high performance concrete preparation system and a control system thereof.The preparation system comprises an environment adaptability adjusting subsystem used for automatically adjusting preparation operation parameters of equipment according to external environment temperature and humidity changes of an ultra-high performance concrete mixture; the dynamic optimization proportioning subsystem is used for sensing real-time states of viscosity, fluidity and the like of the ultra-high performance concrete mixture in the preparation process through a built-in sensor array; adjusting a water-cement ratio and an aggregate proportion according to real-time states of preparation operation parameters, viscosity, fluidity and the like; and the operation energy efficiency management subsystem is used for adjusting the working mode of the equipment according to the preparation operation parameters. The control system comprises an equipment layout assembly, an equipment communication assembly and a program execution assembly. While the quality of the ultra-high performance concrete is ensured, the preparation efficiency and the environmental adaptability are improved, the energy consumption is reduced, and green and intelligent production of the ultra-high performance concrete is realized.
Owner:SOUTHEAST UNIV +1

Concrete mix proportion design system based on industrial control

The invention relates to a concrete mix proportion design system based on industrial control, which belongs to the field of industrial process control, and comprises a central controller for online control of a concrete production process, and the controller integrates the following functional modules: a distributed data acquisition module, a dynamic decision module, a data processing module and a data processing module. The prediction module is used for generating a rheological parameter prediction value based on the raw material characteristic data and the environment parameter data; the closed-loop verification module is used for monitoring actual rheological property parameters in the concrete production process and comparing the actual rheological property parameters with a preset target value to generate performance error indexes; and the grading correction execution module is used for adjusting proportioning parameters and starting a compensation device, and updating the self-learning database based on a correction result so as to optimize the prediction model. According to the method, a closed loop from raw material and environment perception to proportion dynamic adjustment is realized, the concrete rheological property is locked in a target interval, and autonomous decision and accurate control of the whole production process are realized.
Owner:LINYI JINLIN CONCRETE CO LTD

Online rheology determination in additive manufacturing processes

A method for producing a three-dimensional object from a curable binder composition with an additive manufacturing process, the method including the steps of: producing the curable binder composition in the setting state, preferably by mixing the constituents of the curable binder composition in a mixing unit, conveying the curable binder composition in the setting state via a supply line to a printing head movable in at least one spatial direction, applying the curable binder composition in the setting state by means of the printing head, wherein the curable binder composition is preferably applied layer-by-layer, to form the three-dimensional object, determining a pressure drop over a length section of the supply line with at least two pressure measuring device(s), optionally, determining a flow rate of the curable binder composition in the supply line, optionally determining a temperature of the curable binder composition in the supply line.
Owner:SIKA TECH AG

Adjusting concrete mixes and mix designs using diagnostic delta data curve

The present invention allows for better control over strength in concrete mixes and mix designs, while minimizing the over-use of cement and promoting sustainability within the industry. Disclosed are novel method and system which employ a diagnostic delta data (DDD) curve, or, in other words, data that displays a curvilinear relationship when plotted on a visual graph, as obtained by considering the differences (e.g., subtractive differences or ratios) as between (i) target slump and target (or maximum) water content, and (ii) slump and water content values as determined using an automated slump monitoring system which measures slump and water content in the concrete mix during delivery. This DDD curve can then be compared to monitored delta slump and delta water content for later or other deliveries, such that adjustments can be made to the concrete mix or mix design, in a manner that encourages avoidance of cement over-dosing or over-prescription.
Owner:GCP APPLIED TECHNOLOGIES INC

System and method for preparing synchronous grouting material by using shield muck

The invention discloses a system for preparing a synchronous grouting material by utilizing shield muck, and relates to the technical field of shield muck recycling. The system for preparing the synchronous grouting material by utilizing the shield muck comprises a stirring bin, a plurality of material bins and a plurality of additive bins, wherein the material bins and the additive bins are connected with the stirring bin through pipelines; different types of raw materials are stored in the material bins respectively, different types of additives are stored in the additive bins respectively, and the material bins and the additive bins convey the raw materials and the additives into the stirring bin through pipelines; an electric stirring assembly is arranged in the stirring bin, raw materials and additives are stirred and mixed through the electric stirring assembly to form a grouting material, and the grouting material is discharged from one side of the bottom of the stirring bin. Shield muck resources can be efficiently utilized, and environmental pollution is reduced; in addition, the whole preparation process is automatically controlled by the system, the prepared synchronous grouting material has good engineering performance, and the grouting requirement of underground engineering can be met.
Owner:SINOHYDRO BUREAU 14 CO LTD

Gravel aggregate mixing and stirring device

The invention discloses a gravel aggregate mixing and stirring device. The gravel aggregate mixing and stirring device comprises a horizontal stirring barrel, a stirring regulation and control system, a feeding system and a quality detection and feedback system. Wherein a plurality of layers of stirring blade groups are arranged in the horizontal stirring barrel, a cooling spraying assembly is installed, the stirring regulation and control system controls the rotating speed of a driving motor and starting and stopping of the spraying assembly through a central controller in combination with data of a temperature sensor and a pressure sensor, and the feeding system controls feeding of each storage bin through an electric feeding valve according to a preset proportion. The quality detection and feedback system analyzes and judges the mixing uniformity degree through a discharge port image and feeds back the mixing uniformity degree to the central controller so as to adjust the opening degree of the feeding valve and the rotating speed of the motor, and closed-loop control is formed. The device is mainly used for efficiently mixing and stirring gravel aggregate in constructional engineering, and the aggregate mixing uniformity and the intelligent regulation and control level in the stirring process can be improved.
Owner:CHINA ROAD & BRIDGE

Device and method for automatically proportioning grinding agent for cement production and cement raw materials

The invention discloses a cement production abrasive and cement raw material automatic proportioning device and method, and relates to the field of cement premixes. The cement production abrasive and cement raw material automatic proportioning device comprises a mixing unit, a first feeding unit, a second feeding unit, a discharging unit and a control unit. According to the cement production abrasive and cement raw material automatic proportioning device and method, an abrasive additive amount relation function is designed based on load current, finished product granularity and water content during grinding, water content, finished product granularity and load current data acquisition is performed through an infrared sensor, a laser sensor and a current sensor, and according to the relation function, cement raw material proportioning is performed according to the water content, finished product granularity and load current data acquisition. An industrial computer is used for analysis and calculation, the grinding agent adding amount proportion is obtained, and a control signal is generated to act on an electromagnetic valve, so that the discharging speed of the grinding agent is controlled, dynamic adjustment of the proportion of cement raw materials and the grinding agent is achieved, and it is guaranteed that the grinding agent adding amount meets the requirement.
Owner:淄博鲁中水泥有限公司

Method for layer-by-layer deposition of concrete using rapidly hydrating cementitious material and bicomponent cementitious binder composition therefor

The invention relates to a method for layer-by-layer deposition of concrete, in particular of concrete using a rapidly hydrating cementitious binder.A first flow and a second flow are supplied to a mixer to obtain extrudable concrete. The pH of the second flow is larger than the pH of the first flow. The first flow comprises a retarded cementitious binder obtainable by mixing a cementitious binder with a retarder comprising boron and sodium. The retarder allows to increase the setting time of the cementitious binder and allows to influence the pH of the first flow in such a way that the pH of the first flow is lower than the pH of a flow equal to the first flow but comprising the cementitious binder instead of the retarded cementitious binder. The second flow comprises a carrier material. The volume fraction of the carrier material is at least 20 vol % of the second flow.The present invention also relates to a bicomponent cementitious binder composition comprising a first component comprising rapidly hydrating cementitious material.
Owner:UNIV GENT

Solid-liquid batching equipment for autoclaved aerated concrete brick production

The invention discloses autoclaved aerated concrete brick production solid-liquid batching equipment, and relates to the technical field of building production, the autoclaved aerated concrete brick production solid-liquid batching equipment comprises a mixing cavity, a sealing cover is arranged above the mixing cavity, a plurality of conveying pipes are connected to the mixing cavity, and a solid-liquid blanking proportioning mechanism is arranged at the top in the mixing cavity; a forward and reverse rotation mixing mechanism is arranged below the solid-liquid blanking proportioning mechanism; through the design of the incomplete gear of the half gear in the driving gear set, when the incomplete gear is meshed with the overall gear, rotation pause alternate circulation of the discharging port can be achieved, the requirements of different technologies for the batching rhythm are met by adjusting the tooth number and the rotating speed of the half gear and accurately controlling the single-time discharging duration and the intermittent period, and the batching efficiency is improved. And the rotating guide pipe can enable the materials to be spirally thrown out under the action of centrifugal force, so that material accumulation or segregation caused by traditional direct falling type blanking is avoided, and particularly, a strengthening effect is achieved on premixing of solid particles and liquid.
Owner:HUZHOU HUINENG NEW MATERIAL TECH CO LTD

Concrete ingredient conveying device

The invention belongs to the technical field of concrete ingredient conveying, and relates to a concrete ingredient conveying device which comprises a barrel, an auger shaft, an end cap, an end plate, a spring and a plurality of studs. The downstream end of the cylinder is an open end, and a plurality of edge arms are formed on the outer wall of the cylinder. The end cap is arranged at the open end of the barrel and provided with an annular groove capable of being matched with the barrel in an inserted mode and a shaft hole correspondingly matched with the auger shaft, and the end cap can move in the axial direction relative to the barrel. The inner bottom surface of the end cap forms an arc surface, and a plurality of strip-shaped protruding teeth are distributed on the inner side wall of the end cap. The end plate and the spring are both arranged on the auger shaft in a sleeving mode, and the two ends of the spring make contact with the end plate and the end cap respectively. Through holes matched with the two ends of the stud are formed in the radial flange on the end plate and the edge arms, and the stud can limit the distance between the barrel and the end plate. According to the invention, the extrusion condition of materials at the end part of the barrel can be improved, so that the materials bear elastic extrusion force and are continuously segmented and dispersed, the phenomenon of excessive material caking can be inhibited, and the cleaning period is prolonged.
Owner:SHANDONG HANZE NEW MATERIAL CO LTD

Apparatus and method for manufacturing cement slurry comprising foam

According to the invention there is provided an apparatus (100) for manufacturing a cement slurry containing foam, the apparatus comprising: a mixing chamber (101) for mixing a cement material and water to form a cement slurry; a channel (103) fluidly connected to the mixing chamber (101) at a first end (111), the channel (103) for receiving the cement slurry from the mixing chamber (101). In the device (100), a channel (103) extends from a first end (111) and terminates in at least one second end (112); the channel (103) comprises a first foam inlet (106) for introducing foam into the channel (103); and the channel (103) further comprises a second foam inlet for introducing foam into the channel (103). The first foam inlet (106) and the second foam inlet are offset along the length of the channel (103). Methods of using the apparatus are also described.
Owner:SAINT GOBAIN PLACO SAS

Ecological recycled coarse aggregate pervious concrete mix proportion design method

The invention relates to an ecological recycled coarse aggregate pervious concrete mix proportion design method. The method comprises the following steps: S1, recycled coarse aggregate preparation and performance test; s2, determining the void ratio of the mixed coarse aggregate under the compaction condition; s3, determining the volume ratio of the mixed coarse aggregate in 1 m < 3 > of the pervious concrete through the regulatory factor; s4, determining the use amount of a cementing material; s5, determining the use amount of the cement and the mineral admixture; s6, determining the use amount of the recycled coarse aggregate and the natural coarse aggregate; s7, determining the total water consumption; and S8, checking the performance of the ecological recycled coarse aggregate pervious concrete, and adjusting the mix proportion of the ecological recycled coarse aggregate pervious concrete according to a test result. The design method is clear in overall thought, the design steps are simple and easy to follow, waste of materials, time, manpower and the like caused by repeated fitting is avoided, and good practicability and operability are achieved.
Owner:CHINA CONSTRUCTION SIXTH ENGINEERING DIVISION CO LTD +2

A smoke detection and suppression system for concrete production

The present invention discloses a smoke detection and suppression system for concrete production, which relates to the technical field of smoke detection and suppression, and is used for detecting and suppressing smoke in at least one batching bin, comprising a dust suction pipe, a dust removal bin, a first air suction pump and a second air suction pump, wherein the batching bin is connected to the dust removal bin by a dust suction pipe, and the dust removal bin is provided with a first air suction pump and a second air suction pump which are symmetrically distributed on the left and right, the first air suction pump and the second air suction pump are alternately sucked, and the suction ends of the first air suction pump and the second air suction pump are provided with a filter screen, and the first air suction pump and the second air suction pump can also pump air into the dust removal bin; a stirring auger is also rotatably provided in the dust removal bin.
Owner:TAICANG SHENKUN CONCRETE CO LTD

Press-formed biocement processes, compositions, and equipment

Described herein are novel construction materials and construction material compositions, processes, and equipment for manufacturing press-formed biocement and bioconcrete products and construction materials. In some embodiments, the methods include combining aggregate particles with a first measured dose of at least one biological organism or enzyme and a first measured dose of cementation reagents in a first mixer, mixing the contents of the first mixer and reacting the first measured dose of the cementation reagents in the presence of the first measured dose of the at least one biological organism or enzyme to form a biocement which binds to the surfaces of the aggregate particles, thereby increasing the size of the particles to yield a biocement coated aggregate.
Owner:BIOMASON INC

Apparatus and method for manufacturing cementitious slurry comprising foam

According to the present invention, there is provided an apparatus (100) for manufacturing a cementitious slurry comprising foam, the apparatus comprising: a mixing chamber (101) for mixing a cementitious material and water to form a cementitious slurry, a channel (103) fluidly connected to the mixing chamber (101) at a first end (111), the channel (103) for receiving a cementitious slurry from the mixing chamber (101). In the apparatus (100), the channel (103) extends from the first end (111) and terminates at at least one second end (112). The channel (103) comprises a first foam inlet (106) for introducing foam into the channel (103). The channel (103) further comprises a second foam inlet for introducing foam into the channel (103). The first foam inlet (106) and the second foam inlet are offset along the length of the channel (103). A method using the apparatus (100) is also described.
Owner:SAINT GOBAIN PLACO SAS

A process for adjusting production of a gypsum board

Provided is a process for adjusting production of a gypsum board, comprising the following steps: Step 100, formulating a mixture of foaming agents; Step 200, conducting foaming with the mixture of foaming agents to give a soap solution and forming a gypsum board core with the soap solution; Step 300, detecting air hole sizes in the gypsum board core; and Step 400, adjusting a proportion of a foam stabilizer in the mixture of foaming agents according to the air hole sizes. The process according to the present disclosure can adjust size distribution of air holes in the gypsum board core to make it more uniform and can also adjust size of the air holes.
Owner:SAINT GOBAIN PLACO SAS

Early warning and adjusting method for mixing material ratio fluctuation of flow-state solidified soil

The invention provides a flow-state solidified soil mixing material ratio fluctuation early warning adjustment method, and belongs to the technical field of flow-state solidified soil construction.The method includes the steps that the input amount of each component is monitored in real time by building a material ratio fluctuation curve model, a material ratio stable interval is set to form an early warning value, material ratio abnormal points are recorded, and the material ratio fluctuation trend is calculated; applying a material ratio dynamic prediction equation set to analyze a historical change rule and predict a future trend, analyzing material ratio abnormal point relevance to carry out time sequence clustering, constructing a material ratio abnormal point and equipment start-stop relation model to reveal a fluctuation mechanism, calculating a material ratio fluctuation influence area to determine an influenced material range, and calculating the material ratio fluctuation influence area. And executing a material ratio fluctuation compensation program to automatically adjust the input amount of each component and guide fluctuating materials into a temporary storage area for treatment, and finally implementing material ratio recovery adjustment to gradually recover the input amount of each component to a standard value, so that the technical problem that the material ratio fluctuation is difficult to predict in real time and accurately regulate and control in the mixing process of the flow-state solidified soil in the prior art is solved.
Owner:CHINA CONSTR EIGHT ENG DIV CORP LTD

Dynamic compensation concrete batching plant and control method thereof

The invention relates to the technical field of concrete batching machines, in particular to a dynamic compensation concrete batching machine and a control method thereof.The dynamic compensation concrete batching machine comprises a machine base, a fixed column is fixedly connected to the machine base, the fixed column is rotationally connected with a rotating frame, and one end of the rotating frame is rotationally connected with a sand base; the other two ends of the rotating frame are fixedly connected with a stone base, a cement base and a sand base respectively, the stone base, the cement base and the sand base are internally and fixedly connected with discharging anti-blocking mechanisms respectively, the machine base is provided with a batching base, and the batching base is internally and fixedly connected with a flushing and water adding mechanism in a penetrating mode. And the sand with overhigh water content is dehydrated through the water filtering cylinder by utilizing centrifugal force. Meanwhile, a humidity sensor in the sand base detects the water content in real time, the adding amount of water is automatically adjusted according to data fluctuation, and accurate water control and automatic adjustment are achieved. Compared with a traditional batching mode, manual intervention and raw material waste are reduced, and the concrete quality stability and production efficiency are remarkably improved.
Owner:扬州科捷机械有限公司

System and method for determining minimal slurry addition

The present disclosure relates to a system, a non-transitory computer readable medium and a method for determining a minimum amount of slurry to be added to a concrete mixture. This comprises measuring a plurality of n particles and determining, for each particle i: a particle volume (I), a particle surface area (II), a particle maximum size (III), a spherical volume (IV) and a spherical surface area (V) associated with a sphere having a diameter equal to the particle maximum size (III), and a remaining free surface. Then, for the plurality of particles, the shape irregularity factor is determined based on the remaining free surfaces of all n particles and the particle volume (I). The shape irregularity factor is used to determine a minimum amount of slurry for binding with a plurality of n particles to create a constructable concrete mixture, and a control signal is sent to a concrete preparation system.
Owner:X DEVELOPMENT LLC

Device and method for foaming building materials with CO²

The invention relates to a device and a method for foaming building materials with CO₂ 2 for the production of a building component and / or building insulation. The device comprises a conveying device (2) and, downstream, a construction material line (3) in which one or more injection nozzles (4) are arranged to inject liquid CO into the stream of construction material. 2 to inject. The pressure level in the building material line (3) is maintained such that the injected CO₂ 2 remains in its liquid state. The building material as well as the CO 2 downstream they enter a mixing device (9) and then at least one or more decompression pumps (11), which ensure controlled decompression of building material and liquid CO₂ 2without significant cooling and segregation. Downstream, a dispensing device (19) is arranged, which is configured to dispense the material for the production of a component and / or building insulation. Depending on the addition of CO 2 This allows the layers within a component to be modified with respect to their density and thus their properties in terms of load-bearing capacity, heat transfer, and mass. If the amount of CQ is kept constant during the process, 2 injected, which the building material in gaseous CO 2 The material that can be absorbed in the suspension forms a building material foam, for example, in the form of building insulation. The invention further comprises a corresponding method for manufacturing components using such a method.
Owner:WINTER VON ADLERSFLÜGEL, HUBERTUS DIETRICH

Apparatus and method for producing foamed cementitious slurries

According to the present invention, there is provided an apparatus (100) for producing a foamed cementitious slurry, the apparatus comprising: a mixing chamber (101) for mixing a cementitious material with water to form a cementitious slurry; and a channel (103) fluidly connected to the mixing chamber (101) at a first end (111) for receiving the cementitious slurry from the mixing chamber (101). In the apparatus, the channel (103) extends from the first end (111) and terminates at least one second end (112). The channel (103) comprises a first foam inlet (106) for introducing foam into the channel (103), and the apparatus (100) is configured, during use, to introduce foam through the first foam inlet (106) at a velocity no greater than 5.4 times the velocity of the cementitious slurry in the channel (103). Methods of using the apparatus are also described.
Owner:SAINT GOBAIN PLACO SAS

Quality control for raw materials used in concrete production

This invention presents a system and method for the real-time, autonomous quality control of raw materials used in concrete production. The system can detect changes in material properties, issue alerts, and autonomously adjust the concrete mixture to compensate for those changes. The system comprises a network of sensors, including cameras, ultrasonic sensors, spectrometers, and temperature sensors, strategically positioned at various points in the concrete production process. An Al-based control system analyzes real-time data from these sensors to determine properties of the raw materials, such as water content, density, particle size distribution, impurities, temperature, and color. The Al system autonomously generates alerts and adjusts the concrete mixture in response to detected deviations from desired specifications, ensuring consistent concrete quality and reducing reliance on manual intervention. This proactive approach optimizes concrete production by improving consistency, reducing the risk of failures due to substandard raw materials, and increasing efficiency.
Owner:SENSOLYZER ADVANCED SENSING SYST LTD

A multi-phase composite ceramic material gradient hybrid feed device and method of use thereof

The application discloses a kind of multi-phase composite ceramic material gradient mixed feed device and its use method, the device includes barrel, premixing bowl and stirring assembly are arranged in the barrel, the premixing bowl is arranged in the upper of barrel, and multiple through holes are opened in premixing bowl, and slurry after preliminary mixing by premixing bowl enters stirring assembly by through hole;The stirring assembly includes rotating shaft and stirrer, and the stirrer is used for stirring and mixing slurry and makes slurry move downward;The stirrer with through hole is arranged in the application, and different proportion slurry can be continuously configured without disassembling barrel, and composite material continuous gradient printing is realized;By the rotor of stirrer, pressure is applied to the remaining slurry, so that the remaining slurry flows upward through the through hole of the rotor, and continuously mixes with the newly added slurry under the stirring action of the stirrer, to realize the full mixing of each proportion slurry.
Owner:SHANDONG UNIV

Lightweight aggregate concrete production volume weight control method, device, equipment and medium

The invention relates to the technical field of concrete production, in particular to a lightweight aggregate concrete production volume-weight control method, device and equipment and a medium, and the method comprises the following steps: collecting a volume-weight value of concrete in a concrete stirring process; comparing the collected volume-weight value with a target volume-weight value, and calculating the weight of the lightweight aggregate needing to be supplemented according to the difference value between the collected volume-weight value and the target volume-weight value; inputting the light-weight aggregate with the calculated weight into a stirrer for stirring, and repeating the steps of collecting the volume weight value and calculating the weight of the light-weight aggregate needing to be supplemented until the collected volume weight value reaches an error range of a target volume weight value after stirring reaches a set time length; and calculating the final proportion according to the original proportion and the accumulated weight of the added lightweight aggregate. According to the method, through continuous iterative adjustment and final mix proportion accounting, it is ensured that the produced concrete meets the design requirement, meanwhile, the use amount of the lightweight aggregate is optimized, and resource waste is reduced.
Owner:LIAOCHENG TRANSPORTATION DEV CO LTD +2

Sandstone quantitative batching device

The application relates to the field of concrete raw material quantitative batching, and discloses a sandstone quantitative batching device which comprises a batching tank, a connecting shaft is coaxially arranged in the batching tank, the connecting shaft is connected with a motor arranged on the outer surface of the batching tank, the outer circumferential surface of the connecting shaft is provided with a batching component, the batching component is arranged in an array along the circumferential direction of the connecting shaft, the batching component comprises a connecting frame connected with the connecting shaft, a measuring cylinder is arranged on the connecting frame, a material hole is arranged on the upper end surface of the batching tank, the measuring cylinder can be coaxial with the material hole during the rotation of the batching component along with the connecting shaft, the upper hole of the material hole is extended with a hopper, the opening ends of the measuring cylinders of all the batching components are connected through a ring plate, the ring plate is provided with avoiding holes for avoiding the measuring cylinders, and the upper end surface of the ring plate is attached to the upper cavity wall of the batching tank.
Owner:HUIZHOU SHENGYE CONSTR ENG PAVEMENT ENG CO LTD