WO2012100575A1 - 连续式搅拌防渗土料掺混制备***及控制方法 - Google Patents

连续式搅拌防渗土料掺混制备***及控制方法 Download PDF

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Publication number
WO2012100575A1
WO2012100575A1 PCT/CN2011/081851 CN2011081851W WO2012100575A1 WO 2012100575 A1 WO2012100575 A1 WO 2012100575A1 CN 2011081851 W CN2011081851 W CN 2011081851W WO 2012100575 A1 WO2012100575 A1 WO 2012100575A1
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Prior art keywords
hopper
continuous
belt conveyor
discharge
gravel
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PCT/CN2011/081851
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English (en)
French (fr)
Inventor
边晓明
雷敬伟
程润喜
刘晨
谭恺炎
刘世军
吉兵
杨祎
刘小翠
李海波
陈卫烈
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葛洲坝集团试验检测有限公司
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Priority to ES201250024A priority Critical patent/ES2422929B1/es
Publication of WO2012100575A1 publication Critical patent/WO2012100575A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C9/00—General arrangement or layout of plant
    • B28C9/02—General arrangement or layout of plant for producing mixtures of clay or cement with other materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C3/00—Apparatus or methods for mixing clay with other substances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/02—Controlling the operation of the mixing

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  • the invention relates to the field of hydraulic engineering construction, in particular to a continuous stirring and anti-seepage soil material mixing preparation system and a control method thereof.
  • the material yard is laid flat and the mining method is uniformly distributed on the surface of each layer of the material yard.
  • the thickness of the material is determined according to the mixing ratio of the admixture and the height of the excavation.
  • the method has high requirements on the topographic and geological conditions of the soil material yard and the mining intensity of the material yard.
  • Blending method for blending field applied in many domestic projects, simple construction process, single construction equipment and flexible scheduling, good quality control, but the construction needs to be blended.
  • the belt conveyor is mixed; the various materials to be blended are piled into piles according to the group of particles, and a belt conveyor is installed in the corridor under the pile. According to the required mix ratio, the opening degree of different material pile funnel gates is controlled, and various materials are discharged onto the belt conveyor for preliminary blending.
  • the mixing process of the method is relatively complicated and the quality is difficult to control.
  • the mixer is mixed; the mixing machine used is basically the same as the concrete mixing building, which is intermittent production, and the admixture is similar to 'mixed clay concrete ' .
  • the technical problem to be solved by the present invention is to provide a continuous stirring and anti-seepage soil material mixing preparation system and a control method thereof, which can Improve the efficiency of preparation of anti-seepage materials and the quality of ingredients, and reduce the cost of preparation and construction.
  • the technical scheme adopted by the present invention is: a continuous mixing and anti-seepage soil material mixing preparation system, and an aggregate batching belt conveyor, an aggregate batching belt conveyor and a metering under a clay hopper and a gravel hopper
  • the hopper is connected, and a continuous mixer is arranged under the measuring hopper.
  • a lifting unloading belt conveyor is arranged under the discharge port of the continuous mixer, and the unloading belt conveyor is connected with the discharging hopper, and a water supply device is also arranged on the continuous mixer.
  • a pressure sensor is disposed in the weighing hopper.
  • the continuous mixer is a twin-shaft forced continuous mixer.
  • a dynamic metering belt scale is disposed under the discharge ports of the clay hopper and the gravel hopper.
  • a flow meter is disposed in the water supply device.
  • Vibration devices are also provided on the clay hopper and gravel hopper.
  • the vibrating device is connected to the screen of the clay hopper and the gravel hopper.
  • a weighbridge is arranged below the discharge hopper, and a pressure sensor and/or a light sensor are arranged on the discharge hopper.
  • a control method for the above system comprising the following steps:
  • the aggregate batching belt feeding machine feeds the measuring hopper, and supplies the continuous mixer according to the pressure sensor in the measuring hopper to open the valve of the measuring hopper;
  • the water supply device supplies water to the continuous mixer according to the ratio of the design of the built-in flowmeter
  • the continuous mixer is fed to the lifting and unloading belt conveyor, and is lifted to the unloading hopper by the lifting and unloading belt conveyor;
  • the discharge hopper automatically discharges or manually controls the discharge according to the signal of the light sensor and/or the weighbridge;
  • An upper limit value is set for the pressure sensor in the discharge hopper. When the value obtained by the pressure sensor is greater than the upper limit value, the control system is stopped.
  • 1 is a schematic view showing the structure of the system of the present invention.
  • FIG. 2 is a top plan view of the system of the present invention.
  • Figure 3 is a front elevational view of the clay hopper of the present invention.
  • Figure 4 is a right side view of the clay hopper of the present invention.
  • a continuous mixing anti-seepage soil material mixing preparation system is provided.
  • the clay hopper 1 and the gravel hopper 2 are provided with an aggregate batching belt conveyor 3, and the aggregate batching belt conveyor 3 is connected with the weighing hopper 6.
  • a continuous mixer 8 is arranged under the measuring hopper 6, and a lifting and unloading belt conveyor 4 is arranged under the discharge port of the continuous mixer 8, and the lifting and unloading belt conveyor 4 is connected with the discharging hopper 5, and the continuous mixer 8 is further provided.
  • a pressure sensor is disposed in the weighing hopper 6.
  • the pressure sensor can provide a signal to a master device, such as a PLC or a computer, to obtain the weight of the material in the metering hopper 6, thereby supplying water according to the weight.
  • the continuous mixer 8 is a twin-shaft forced continuous mixer.
  • each of the clay hopper 1 and the gravel hopper 2 is provided with a discharge port.
  • Dynamic metering belt scale As shown in FIG. 3 and FIG. 4, each of the clay hopper 1 and the gravel hopper 2 is provided with a discharge port.
  • Dynamic metering belt scale The accuracy of the dynamic metering aggregate belt scale is 0.5%, which can greatly improve the precision of aggregate ingredients.
  • Data control with dynamic metering belt scale The valve on the hopper is opened and closed to achieve automatic control of the batch ratio.
  • the water supply device 7 is provided with a flow meter for acquiring water supply quantity data in the automatic control.
  • the clay hopper 1 and the gravel hopper 2 are further provided with a vibration device 9 in which the aggregate vibration motor and the vibration device 9
  • the vibrating device 9 is connected to the clay hopper 1 and the screen 11 of the gravel hopper 2, so that the problem that the aggregate is bonded to the screen and cannot fall freely into the hopper can be solved.
  • a floor scale is disposed below the discharge hopper 5, and a pressure sensor and/or a light sensor is disposed on the discharge hopper 5.
  • the data obtained by the weighbridge is used as the basis for opening the discharge hopper 5. Only when the set weight value is reached, the discharge hopper 5 will be opened to avoid misoperation.
  • the set light sensor such as the infrared sensor, can be used as a supplementary monitoring point. Avoid construction workers under the discharge hopper 5, causing casualties.
  • the pressure sensor is set as the basis for the shutdown to cope with the temporary interruption of transportation.
  • a control method for the above system comprising the following steps:
  • the dynamic measuring belt scale 10 can be placed on the aggregate batching belt machine 3 and the dynamic metering belt scale 10' in the aggregate batching belt conveyor.
  • the falling point of 3 is set to a distance, that is, the time of the solenoid valve control buffer on the gravel hopper 2 is given to ensure the reliability of the automatic control and reduce the difficulty of the automatic control.
  • the aggregate batching belt conveyor 3 supplies the weighing hopper 6 and supplies the continuous mixer 8 according to the pressure sensor in the measuring hopper 6 to open the valve of the measuring hopper 6; as an alternative technical solution, dynamic metering can also be used, but Taking into account the situation of frequent shutdowns and the convenience of installation, the use of pressure sensors, after the accumulation of a certain amount of valve supply is a more optimized technical solution, which can achieve higher water supply accuracy, and help ensure the automatic control of the ratio of precision.
  • the water supply device 7 supplies water to the continuous mixer 8 according to the ratio of the design of the built-in flowmeter, and the system avoids the aggregate because the system acquires the data amount of the ingredients from the weighing hopper 6.
  • the cumulative error in the delivery of the batching belt conveyor 3, especially the cumulative error caused by the start-stop, the water supply accuracy of the system is high, ensuring the final product The quality of the anti-seepage material.
  • the unloading hopper 5 automatically discharges or manually controls the unloading according to the signal of the light sensor and/or the weighbridge;
  • the pressure sensor in the discharge hopper 5 sets an upper limit value, and when the value obtained by the pressure sensor is greater than the upper limit value, the control system is stopped.
  • the system is also equipped with functions such as manual and forced operation.
  • the system In order to strengthen the safety performance of the equipment, the system also has a variety of safety protection functions, such as motor over-current over-temperature protection, alarm automatic stop batching, emergency shutdown and other protection functions, the production capacity of the equipment can reach 300t / h.
  • safety protection functions such as motor over-current over-temperature protection, alarm automatic stop batching, emergency shutdown and other protection functions
  • a kind provided by the invention Continuous mixing anti-seepage soil material mixing preparation system and control method can be realized by means of quantitative feeding, metering conveying and forced mixing Control functions such as automatic dosing, automatic metering and watering, continuous agitation and automatic or manual unloading.
  • the equipment and the site cost of the invention are saved by 50%, and the efficiency is the traditional blending method. 150%.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Description

连续式搅拌防渗土料掺混制备***及控制方法 技术领域
本发明涉及一种水利工程施工领域，特别是一种 连续式搅拌防渗土料掺混制备***及控制方法。
背景技术
根据国、内外资料，目前土石坝心墙防渗土料掺合方法主要有5种：
1 、料场平铺立采法；在料场的每层开挖表面均匀铺一层掺砾料，铺料厚度根据掺合料配合比及挖掘高度而定。该方法对工程所在地土料场的地形地质条件以及料场开采强度有较高要求。
2 、掺合场平铺立采法；应用在国内很多工程，施工工艺简单，施工设备单一且调度灵活，质量控制较好，但施工需较大掺合场地。
3 、填筑面堆放掺合法；在填筑面将两种料相间堆放，用推土机推料掺合，这种方法不易保证掺合质量，且影响填筑施工强度。
4 、带式输送机掺合法；将拟掺和的各种材料按粒组分别堆成料堆，料堆下的廊道里安装有带式输送机。按照要求的配合比控制不同料堆漏斗闸门的开度，使各种材料卸到带式输送机上进行初步掺和，该方法混掺工艺相对复杂，质量较难控制。
5 、搅拌机掺合法； 采用的拌和机械与混凝土拌和楼基本一致，属间歇式生产，掺合料类似于 ' 拌制的黏土混凝土 ' 。
发明内容
本发明 所要解决的技术问题是提供 一种连续式搅拌防渗土料掺混制备***及控制方法，可以 提高防渗料制备的效率和配料质量，降低制备及施工成本。
为解决上述技术问题，本发明所采用的技术方案是：一种连续式搅拌防渗土料掺混制备***，粘土料斗和砾石料斗下设有集料配料皮带机，集料配料皮带机与计量料斗连接，计量料斗下设有连续式搅拌机，连续式搅拌机的出料口下设有提升卸料皮带机，提升卸料皮带机与卸料斗连接，连续式搅拌机上还设有供水装置。
所述的计量料斗内设有压力传感器。
所述的连续式搅拌机为 双卧轴强制连续式搅拌机。
所述的粘土料斗和砾石料斗的出料口下各设有一 动态计量皮带秤。
所述的供水装置内设有流量计。
粘土料斗和砾石料斗上还设有振动装置。
所述的振动装置与粘土料斗和砾石料斗的挡筛连接。
卸料斗下方设有地磅，卸料斗上设有压力传感器和/或光线传感器。
一种用于上述***的控制方法，包括以下步骤：
1 ）首先开启粘土料斗的电磁阀，给其下的动态计量皮带秤供料，同时或一个时段后，根据动态计量皮带秤供料量，开启砾石料斗的电磁阀，按照设计要求的比例给砾石料斗下的动态计量皮带秤供料；
2 ）集料配料皮带机给计量料斗供料，根据计量料斗内的压力传感器开启计量料斗的阀门给连续式搅拌机供料；
3 ）根据计量料斗的供料量，供水装置根据内设的流量计按照设计要求的比例给连续式搅拌机供水；
4 ）搅拌完成后，连续式搅拌机下料至提升卸料皮带机，由提升卸料皮带机提升至卸料斗；
5 ）卸料斗根据光线传感器和/或地磅的信号自动卸料或人工手动控制卸料；
通过上述步骤实现 防渗土料的自动 掺混。
给 卸料斗内的压力传感器设定一上限值，当压力传感器获取的数值大于该上限值，则控制***停机。
附图概述
图 1 是本发明的***结构示意图。
图 2 是本发明的***俯视图。
图 3 是本发明中粘土料斗的主视图。
图 4 是本发明中粘土料斗的右视图。
实施方式
如图1、图2中，一种连续式搅拌防渗土料掺混制备***，粘土料斗1和砾石料斗2下设有集料配料皮带机3，集料配料皮带机3与计量料斗6连接，计量料斗6下设有连续式搅拌机8，连续式搅拌机8的出料口下设有提升卸料皮带机4，提升卸料皮带机4与卸料斗5连接，连续式搅拌机8上还设有供水装置7。
所述的计量料斗6内设有压力传感器。此压力传感器可以给主控装置，例如PLC或工控机提供信号，以获得计量料斗6内的物料重量，从而根据该重量供水。
所述的连续式搅拌机8为 双卧轴强制连续式搅拌机。
如图3、图4中，所述的粘土料斗1和砾石料斗2的出料口下各设有一 动态计量皮带秤。动态计量集料配料皮带秤的精度为 0.5% ，可以大大提高集料配料的精度。以动态计量皮带秤获取的数据控制 料斗上的阀门启闭，从而实现自动控制配料比。
所述的供水装置7内设有流量计，用于获取自动控制中供水量数据。
粘土料斗1和砾石料斗2上还设有振动装置9，振动装置9中 骨料震动电机与 所述的振动装置9与粘土料斗1和砾石料斗2的挡筛11连接 ，可以解决集料粘结在挡筛上无法自由落入料斗的问题。
卸料斗5下方设有地磅，卸料斗5上设有压力传感器和/或光线传感器。以地磅获取的数据作为卸料斗5开启的依据，只有达到设定的重量值，卸料斗5才会开启，以避免出现误操作，设置的光线传感器，例如红外传感器，作为补充的监控点，可以避免卸料斗5下出现施工人员，造成伤亡。设置的压力传感器作为停机的依据，以应对运输临时中断的情况。
一种用于上述***的控制方法，包括以下步骤：
1 ）在PLC或工控机中设定相关的控制参数，开启***中的设备。
2）首先开启粘土料斗1的电磁阀，给其下的动态计量皮带秤10供料，同时或一个时段后，根据动态计量皮带秤10供料量，开启砾石料斗2的电磁阀，按照设计要求的比例给砾石料斗2下的动态计量皮带秤10'供料；在本例中采用粘土料斗1下的动态计量皮带秤10作为配料的依据，但是采用砾石料斗2的数据作为依据也是可行的，不过由于粘土料易受到环境因素的影响，例如湿度，而砾石料则不易受环境因素影响，供料较为可靠，所以根据粘土料的供料量调整砾石料的供料量是较为优化的技术方案。为避免出现自动控制中的振荡，确保粘土料和砾石料的配比，可以把动态计量皮带秤10在集料配料皮带机3上的落点与动态计量皮带秤10'在集料配料皮带机3的落点设置一段距离，即给出砾石料斗2上的电磁阀控制缓冲的时间，以确保自动控制的可靠性，降低自动控制的难度。
3）集料配料皮带机3给计量料斗6供料，根据计量料斗6内的压力传感器开启计量料斗6的阀门给连续式搅拌机8供料；作为替代的技术方案，也可以采用动态计量，不过考虑到频繁停机的状况，以及安装的便利，采用压力传感器，在积累一定量后开启阀门供料是较为优化的技术方案，这样可以达到较高的供水精度，有利于确保自动控制配料比精度。
4）根据计量料斗6的供料量，供水装置7根据内设的流量计按照设计要求的比例给连续式搅拌机8供水，由于***从计量料斗6获取了集配料的数据量，避免了集料配料皮带机3输送中的累积误差，特别是由启停造成的累积误差，本***的供水精度高，确保了最终成品 防渗料 的质量。
5） 将双卧轴强制连续式搅拌机中的叶片尺寸加大2cm， 以增加其拌合推力，使拌合好的防渗料顺利出仓， 搅拌完成后，连续式搅拌机8下料至提升卸料皮带机4，由提升卸料皮带机4提升至卸料斗5；
6 ）卸料斗5根据光线传感器和/或地磅的信号自动卸料或人工手动控制卸料；
通过上述步骤实现 防渗土料的自动 掺混。
应该考虑到，在施工过程中，由于各种因素可能出现运输跟不上生产的情况，可以通过给 卸料斗5内的压力传感器设定一上限值，当压力传感器获取的数值大于该上限值，则控制***停机。
***还设置有手动及强制操作等功能，
为加强设备的安全性能，***还设置了多种安全保护功能，如电机过流过热保护、报警自动停止配料、紧急停机等保护功能，设备的生产能力可以达到300t/h。
工业实用性
本发明提供的一种 连续式搅拌防渗土料掺混制备***及控制方法,通过定量给料、计量输送和强制拌合的方法，可以实现 自动配料、自动计量加水、连续搅拌和自动或手动卸料装车等控制功能。相比 采用传统掺合方法制备防渗料，本发明的设备及场地费用节省 50% ，效率是传统掺合方法的 150% 。

Claims (10)

  1. 一种连续式搅拌防渗土料掺混制备***，其特征在于：粘土料斗（1）和砾石料斗（2）下设有集料配料皮带机（3），集料配料皮带机（3）与计量料斗（6）连接，计量料斗（6）下设有连续式搅拌机（8），连续式搅拌机（8）的出料口下设有提升卸料皮带机（4），提升卸料皮带机（4）与卸料斗（5）连接，连续式搅拌机（8）上还设有供水装置（7）。
  2. 根据权利要求1所述的一种连续式搅拌防渗土料掺混制备***，其特征在于：所述的计量料斗（6）内设有压力传感器。
  3. 根据权利要求1所述的一种连续式搅拌防渗土料掺混制备***，其特征在于：所述的连续式搅拌机（8）为双卧轴强制连续式搅拌机。
  4. 根据权利要求1所述的一种连续式搅拌防渗土料掺混制备***，其特征在于：所述的粘土料斗（1）和砾石料斗（2）的出料口下各设有一动态计量皮带秤。
  5. 根据权利要求1所述的一种连续式搅拌防渗土料掺混制备***，其特征在于：所述的供水装置（7）内设有流量计。
  6. 根据权利要求1所述的一种连续式搅拌防渗土料掺混制备***，其特征在于：粘土料斗（1）和砾石料斗（2）上还设有振动装置（9）。
  7. 根据权利要求6所述的一种连续式搅拌防渗土料掺混制备***，其特征在于：所述的振动装置（9）与粘土料斗（1）和砾石料斗（2）的挡筛（11）连接。
  8. 根据权利要求1所述的一种连续式搅拌防渗土料掺混制备***，其特征在于：卸料斗（5）下方设有地磅，卸料斗（5）上设有压力传感器和/或光线传感器。
  9. 一种用于权利要求1-7任一项所述***的控制方法，其特征在于包括以下步骤：
    1）首先开启粘土料斗（1）的电磁阀，给其下的动态计量皮带秤（10）供料，同时或一个时段后，根据动态计量皮带秤（10）供料量，开启砾石料斗（2）的电磁阀，按照设计要求的比例给砾石料斗（2）下的动态计量皮带秤（10’）供料；
    2）集料配料皮带机（3）给计量料斗（6）供料，根据计量料斗（6）内的压力传感器开启计量料斗（6）的阀门给连续式搅拌机（8）供料；
    3）根据计量料斗（6）的供料量，供水装置（7）根据内设的流量计按照设计要求的比例给连续式搅拌机（8）供水；
    4）搅拌完成后，连续式搅拌机（8）下料至提升卸料皮带机（4），由提升卸料皮带机（4）提升至卸料斗（5）；
    5）卸料斗（5）根据光线传感器和/或地磅的信号自动卸料或人工手动控制卸料；
    通过上述步骤实现防渗土料的自动掺混。
  10. 根据权利要求9所述的方法，其特征在于：给卸料斗（5）内的压力传感器设定一上限值，当压力传感器获取的数值大于该上限值，则控制***停机。
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