CN112692981B - A preparation system and preparation process for pumpable pouring backfill solidified soil - Google Patents
A preparation system and preparation process for pumpable pouring backfill solidified soil Download PDFInfo
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- CN112692981B CN112692981B CN202110004645.2A CN202110004645A CN112692981B CN 112692981 B CN112692981 B CN 112692981B CN 202110004645 A CN202110004645 A CN 202110004645A CN 112692981 B CN112692981 B CN 112692981B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B15/00—General arrangement or layout of plant ; Industrial outlines or plant installations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
本发明公开了一种可泵送浇筑回填固化土的制备系统及制备工艺，包括分别用于向强制式搅拌机内部添加原状淤泥和固化材料的原状淤泥输送装置和固化材料添加装置，以及与回填场连通的回填装置。本发明通过对原状淤泥的湿密度进行控制并调整，得到了质量均一、稳定的调整淤泥，最大化减少了原状淤泥性由于性状波动而造成的影响保证了浇筑回填的固化土的质量和流动值。
The present invention discloses a preparation system and a preparation process for pumpable pouring backfill solidified soil, comprising an original sludge conveying device and a solidified material adding device for adding original sludge and solidified material to a forced mixer, respectively, and a backfilling device connected to a backfilling field. The present invention controls and adjusts the wet density of the original sludge to obtain a uniform and stable adjusted sludge, minimizes the influence of the original sludge properties due to property fluctuations, and ensures the quality and flow value of the solidified soil for pouring backfill.
Description
Technical Field
The invention relates to the field of sludge and solidified soil treatment. More particularly, the invention relates to a preparation system and a preparation process of pumpable pouring backfill solidified soil.
Background
In order to improve the water quality of rivers and lakes, ensure the normal flood discharge capacity of the river channels and keep the channels and ports unblocked, large-scale dredging and dredging projects are being carried out in all countries of the world including China. According to statistics, the amount of dredged silt generated in the Zhujiang delta area of China every year reaches about 8000 ten thousand m 3, the amount of silt thrown into the ocean every year of China is close to 2 hundred million m 3, a large amount of dredged silt is still generated in water conservancy and ocean engineering in the next ten years, and the treatment of the dredged silt is a problem which is difficult to avoid.
The dredging sludge generated in the dredging engineering is generally treated by adopting a stacking or discarding method, so that on one hand, a large amount of land is occupied, a large amount of land resources are wasted, the effective utilization of ocean resources can be seriously influenced by throwing the sludge into the open sea, the ocean environment can be irreparably damaged, and on the other hand, the dredging sludge mostly contains pollutants such as heavy metals, organic matters and the like, and secondary pollution can be necessarily caused to the surrounding environment without effective treatment.
In recent years, the technology of curing sludge is gradually developed, and after the sludge is mixed with cementing materials such as cement, lime, fly ash or special soil curing agents, mechanical indexes of the sludge are improved through a series of physical and chemical reactions, so that backfill materials meeting engineering requirements are formed, the method can effectively reduce pollution of heavy metals, organic matters and the like, but the quality requirements of the cured soil cannot be ensured due to the influence of the properties and the moisture content of the sludge, and when the moisture content of the sludge is increased, the strength of the cured soil is obviously reduced, so that the quality is unqualified; in addition, the utilization of the solidified soil at present mainly takes paving and rolling operation as a main part, the procedures are complicated, the construction period is long, the cost is high, and the requirement of underwater backfill is difficult to meet.
Disclosure of Invention
It is an object of the present invention to solve at least the above problems and to provide at least the advantages to be described later.
The invention also aims to provide a preparation system and a preparation process of the pumpable pouring backfill solidified soil, wherein the wet density of the original sludge is controlled and regulated to obtain regulated sludge with uniform and stable quality, the influence of the original sludge property caused by character fluctuation is reduced to the maximum extent, and the quality and the flow value of the pouring backfill solidified soil are ensured.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a pumpable backfill solidified soil preparing system comprising an original sludge conveying device and a solidified material adding device for adding original sludge and solidified material to an inside of a forced mixer, respectively, and a backfill device communicating with a backfill field, wherein,
The undisturbed sludge conveying device comprises:
the weighing feeder is fixedly arranged and used for controlling the weight of the undisturbed sludge output;
The mud decomposing machine is fixedly arranged through a bracket, and a feed inlet of the mud decomposing machine is communicated with the weighing feeder;
The feeding port of the first screw conveyor is communicated with the discharging port of the mud decomposing machine;
A wet density measuring instrument, which is arranged in the mud decomposing machine and is used for monitoring the wet density of undisturbed mud;
the solidified material adding apparatus includes:
a second screw conveyor fixedly arranged;
the weighing hopper is fixedly arranged right above the second screw conveyor and is communicated with the feed inlet of the second screw conveyor;
the first weighing sensor is clamped between the weighing hopper and the second screw conveyor to acquire the weight of the weighing hopper;
the forced mixer includes:
The stirring barrel is arranged on the ground, the discharge ports of the first screw conveyor and the second screw conveyor are communicated with the feed inlet of the stirring barrel, and the bottom of the stirring barrel is provided with a discharge port;
The stirring shaft is fixedly arranged in the stirring barrel;
The backfill device comprises:
The tailing filling pump is arranged on the ground, and a feed inlet of the tailing filling pump is communicated with a discharge opening at the bottom of the stirring barrel;
and one end of the conveying pipeline is communicated with a discharge port of the tailing filling pump, and the other end of the conveying pipeline is communicated with the backfill field.
Preferably, further comprising a water adding system comprising:
A water storage tank;
the water inlet of the first water pipe is communicated with the water storage tank, and the water outlet of the first water pipe is communicated with the feed inlet of the mud decomposing machine;
And the water inlet of the second water pipe is communicated with the water storage tank, and the water outlet of the second water pipe is communicated with the feed inlet of the second screw conveyor.
Preferably, the weighing feeder comprises:
A frame;
The mud storage hopper is fixedly arranged on the frame and used for storing undisturbed mud;
The third screw conveyor is fixedly arranged on the frame and is positioned right below the mud storage hopper, a feed inlet of the third screw conveyor is communicated with a discharge outlet of the mud storage hopper, and a discharge outlet of the third screw conveyor is communicated with a feed inlet of the mud decomposing machine;
And the second weighing sensor is arranged at the bottom of the frame so as to acquire the weights of the frame, the third screw conveyor and the mud storage hopper.
Preferably, the stirring device is fixedly arranged in the mud decomposing machine and is used for stirring the undisturbed mud input into the mud decomposing machine.
Preferably, the stirring device comprises two first rotating rods which are oppositely arranged at two ends of the mud decomposing machine, one end of any first rotating rod penetrates through one side of the mud decomposing machine and is rotationally connected with one side of the support, the other end of any first rotating rod is rotationally connected with the other side of the support through a first driving device, and a plurality of first harrows are fixedly arranged on the outer side wall of any first rotating rod and are circumferentially arranged at intervals along the length direction of the first rotating rod.
Preferably, the cured material adding apparatus further includes:
the powder bin is fixedly arranged and used for storing the solidified material;
and the feed inlet of the fourth screw conveyor is communicated with the discharge outlet of the powder bin, and the discharge outlet of the fourth screw conveyor is communicated with the feed inlet of the weighing hopper.
Preferably, the mud storage hopper further comprises a grid fixedly arranged at the top of the mud storage hopper, and the aperture of the grid is smaller than 10cm.
Preferably, the mud storage hopper further comprises a stirrer, wherein the stirrer is arranged inside the mud storage hopper and comprises:
one end of the second rotating rod penetrates through one side of the mud storage hopper to be rotationally connected with one side of the frame, and the other end of the second rotating rod is rotationally connected with the other side of the frame through a second driving device;
the plurality of second harrow bars are fixedly arranged on the outer side wall of the second rotating rod and are circumferentially arranged at intervals along the length direction of the second rotating rod.
Preferably, the method further comprises an arithmetic controller, which comprises:
A storage unit for storing a wet density target value of the undisturbed sludge, a wet density target value of solidified soil, the weight of the undisturbed sludge conveyed by the weighing feeder each time, and the relationship between the liquid limit value of the undisturbed sludge and the water adding amount and the wet density of the undisturbed sludge;
a calculation unit for acquiring data measured by the wet density measuring instrument, comparing the data with a wet density target value of the original sludge, calculating water adding amount according to the relationship between the water adding amount and the wet density of the original sludge, and comparing the wet density of the original sludge with the wet density target value of the solidified soil to calculate the adding amount of the solidified material;
The control unit is used for acquiring weighing data of the second weighing sensor and controlling the output weight of the undisturbed sludge by the weighing feeder, acquiring weighing data of the first weighing sensor, controlling the output weight of the curing material by the curing material adding device and controlling the water adding system;
the storage unit, the calculation unit and the control unit mutually transmit information.
The invention also provides a preparation process of the pumpable pouring backfill solidified soil, which comprises the following steps:
Step 1, completing the assembly of the preparation system on the ground, and presetting a wet density target value of undisturbed sludge, a wet density target value of solidified soil, the weight of undisturbed sludge conveyed by a weighing feeder each time, and testing to obtain a liquid limit value of undisturbed sludge and the relationship between the water adding amount and the wet density of undisturbed sludge in a storage unit of an operation controller;
step 2, a control unit of the operation controller controls the weighing feeder to quantitatively convey the undisturbed sludge into the mud-decomposing machine each time, and simultaneously, the wet density measurement at the bottom of the mud-decomposing machine measures the wet density of the undisturbed sludge input into the mud-decomposing machine, and the measured data are fed back to a calculation unit of the operation controller;
Step 3, the calculation unit of the operation controller compares the data fed back by the wet density measuring instrument with a preset wet density target value of original sludge, when the fed back data exceeds the preset target value, water is needed to be added into the sludge decomposing machine, otherwise, water is not needed to be added, when water is needed to be added, the calculation unit calculates the water adding amount according to the relation between the water adding amount and the wet density of the original sludge, the water adding amount is obtained by calculation and is transmitted to the control unit, the control unit controls the water adding system to add the calculated water amount into the sludge decomposing machine according to the calculated water adding amount, the wet density of the original sludge is adjusted, meanwhile, the stirring device stirs the original sludge and the water to obtain adjusted sludge, and when the wet density of the adjusted sludge reaches the preset target value in the storage unit of the operation controller, water adding is stopped;
Step 4, after the water addition is completed, comparing the wet density of the adjusted sludge with a target wet density value of the solidified soil by a calculation unit of the operation controller, and calculating and analyzing the addition amount of the solidified material by the calculation unit of the operation controller if the wet density of the adjusted sludge is smaller than the target wet density value of the solidified soil;
Step 5, conveying the adjustment sludge in the sludge decomposing machine to the forced mixer through a first screw conveyor, meanwhile, adding the curing material in the powder bin into a weighing hopper through a fourth screw conveyor, dynamically weighing the weight of the added curing material by a first weighing sensor at the bottom of the weighing hopper, and transmitting a weighing result to a control unit of an operation controller in real time, wherein when the weight weighed by the first weighing sensor is consistent with the addition amount of the curing material calculated and analyzed in a calculation unit, the fourth screw conveyor stops adding the curing material into the weighing hopper, and the curing material in the weighing hopper is conveyed to the forced mixer through a second screw conveyor;
Step 6, starting a forced mixer, uniformly mixing the adjustment sludge with the curing material for a preset mixing time to obtain adjustment curing soil, comparing the humidity density of the adjustment curing soil with a humidity density target value of the curing soil, and if the humidity density of the adjustment curing soil is still smaller than the humidity density target value of the curing soil, continuously adding the curing material into the forced mixer until the humidity density of the adjustment curing soil reaches the preset target value;
and 7, unloading the solidified soil with the wet density reaching a preset target value from a discharge opening at the bottom of the forced mixer into a tailing filling pump, and conveying the solidified soil to a backfill field through a conveying pipeline for pouring and backfilling.
The invention at least comprises the following beneficial effects:
1. the wet density of the undisturbed sludge is controlled and regulated, so that regulated sludge with uniform and stable quality is obtained, the influence of the undisturbed sludge due to property fluctuation is reduced to the maximum extent, and the quality and the flow value of the solidified soil for pouring and backfilling are ensured.
2. According to the invention, the fluidity of the undisturbed sludge is improved through the stirring device, the uniformity of mixing of the undisturbed sludge and the curing material is realized, the pumping pouring backfill requirement of the curing soil is met, the large-scale backfill engineering of the curing soil is facilitated, and the construction is convenient.
3. According to the invention, the second weighing sensor is combined with the operation controller, so that the aim of accurate batching is fulfilled, the quality of the poured and backfilled solidified soil is ensured, the waste of solidified materials is reduced, and the construction cost is saved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic diagram of a frame structure of a process for preparing pumpable pouring backfill solidified soil of the present invention;
FIG. 2 is a schematic structural view of a system for preparing pumpable pouring backfill solidified soil of the present invention;
fig. 3 is a schematic structural view of the stirring device of the present invention.
Description of the specification reference numerals:
1. The system comprises a mud remover, 101, a first screw conveyor, 102, a wet density measuring instrument, 2, a powder bin, 201, a weighing hopper, 202, a second screw conveyor, 203, a first weighing sensor, 204, a fourth screw conveyor, 3, a forced stirrer, 301, a discharge opening, 4, a tailing filling pump, 401, a conveying pipeline, 5, an operation controller, 6, a water storage tank, 601, a first water pipe, 602, a second water pipe, 7, a mud storage hopper, 701, a third screw conveyor, 702, a second weighing sensor, 703, an alarm, 704, a grid, 705, a stirrer, 8, a stirring device, 801, a first rotating rod, 802, a first harrow rod, 803 and a first driving device.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
It should be noted that, in the description of the present invention, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 1 to 3, the present invention provides a pumpable pouring backfill solidified soil preparation system comprising an original sludge conveying device and a solidified material adding device for adding original sludge and solidified material to the inside of a forced mixer 3, respectively, and a backfill device in communication with a backfill field, wherein,
The undisturbed sludge conveying device comprises:
the weighing feeder is fixedly arranged and used for controlling the weight of the undisturbed sludge output;
the mud decomposing machine 1 is fixedly arranged through a bracket, and a feed inlet of the mud decomposing machine 1 is communicated with the weighing feeder;
a first screw conveyor 101, the feed inlet of which is communicated with the discharge outlet of the mud decomposing machine 1;
a wet density measuring instrument 102 provided inside the mud remover 1 for monitoring the wet density of the raw mud;
the solidified material adding apparatus includes:
a second screw conveyor 202 fixedly provided;
A weighing hopper 201 fixedly arranged right above the second screw conveyor 202 and communicated with a feed inlet of the second screw conveyor 202;
a first load cell 203 interposed between the weigh hopper 201 and the second screw conveyor 202 to acquire the weight of the weigh hopper 201;
The forced mixer 3 includes:
The stirring barrel is arranged on the ground, the discharge ports of the first screw conveyor 101 and the second screw conveyor 202 are communicated with the feed port of the stirring barrel, and the bottom of the stirring barrel is provided with a discharge port 301;
The stirring shaft is fixedly arranged in the stirring barrel;
The backfill device comprises:
A tailing filling pump 4 which is arranged on the ground, wherein a feed inlet of the tailing filling pump 4 is communicated with a discharge opening 301 at the bottom of the stirring barrel;
and one end of the conveying pipeline 401 is communicated with a discharge port of the tailing filling pump 4, and the other end of the conveying pipeline is communicated with the backfill field.
In the technical scheme, the weighing feeder is fixedly arranged and communicated with the mud decomposing machine 1, raw mud in the weighing feeder can be conveyed into the mud decomposing machine 1 from a feed inlet of the mud decomposing machine 1, a discharge outlet of the mud decomposing machine 1 is communicated with the forced mixer 3 through the first screw conveyor 101, raw mud in the mud decomposing machine 1 can be conveyed into the forced mixer, a solidifying material can be placed in the weighing hopper 201, a discharge outlet of the weighing hopper 201 is communicated with a feed inlet of the second screw conveyor 202, a discharge outlet of the second screw conveyor 202 is communicated with a feed inlet of the forced mixer 3, namely, the solidifying material in the weighing hopper 201 can be conveyed into the forced mixer 3 through the second screw conveyor 202 to be mixed with the raw mud to obtain solidifying soil, pouring is carried out, the required solidifying soil has different wet densities and strengths due to different properties of the raw mud, the relation between the water adding amount and the wet density of the original sludge is required to be measured through a test before solidified soil is prepared, so that a wet density target value of the original sludge and a wet density target value of the solidified soil are preset according to a flowing value of the original sludge, the test shows that the water adding amount of the original sludge is inversely proportional to the wet density, after the target value is set, the original sludge is added into a weighing feeder through a digging machine on a construction site, the original sludge enters the mud machine 1 from a feeding hole of the mud machine 1, a wet density measuring instrument 102 capable of monitoring the wet density of the original sludge is also arranged inside the mud machine 1, the weight of the original sludge which is put into the mud machine 1 each time is required to be set by the weighing feeder, when the weight of the original sludge which is input into the mud machine 1 reaches a set value, a worker pauses the conveying work of the weighing feeder, judging whether water needs to be added into the mud-decomposing machine 1 according to the data measured by the wet density measuring instrument 102 and the wet density target value of the original mud, if water needs to be added, working out the water adding amount according to the relation between the water adding amount and the wet density of the original mud obtained by the test by a worker, adding the calculated water amount from the feed inlet of the mud-decomposing machine 1, mixing the original mud with the water to form adjusted mud, measuring the wet density of the adjusted mud through the wet density measuring instrument 102, comparing the wet density with the wet density target value of the original mud again, if the wet density of the original mud is smaller than the target value, continuing to add water until the wet density of the adjusted mud reaches the preset target value, comparing the wet density of the adjusted mud with the wet density target value of the solidified soil, working out the weight of the solidified material needing to be added, while adjusting the discharge port of the sludge decomposing machine 1 and conveying the sludge to the forced mixer 3 through the first screw conveyor 101, a worker adds the calculated addition amount of the curing material to the feed port of the weighing hopper 201, and the worker can judge whether the addition amount of the curing material reaches the calculated weight according to the first weighing sensor 203 at the bottom of the weighing hopper 201, the first weighing sensor 203 is clamped between the weighing hopper 201 and the second screw conveyor 202, the worker can know the weight of the weighing hopper 201 without the curing material through the first weighing sensor 203 at first, and when the curing material is added into the weighing hopper 201, if the weight displayed by the first weighing sensor 203 is the sum of the weight of the weighing hopper 201 without the curing material and the calculated addition amount of the curing material, the worker stops adding the curing material, the solidified material in the weighing hopper 201 can be conveyed into the forced mixer through the second screw conveyor 202 to be mixed with the adjustment sludge to obtain adjustment solidified soil, a worker samples the adjustment solidified soil to measure the wet density of the adjustment solidified soil and compares the adjustment solidified soil with a target wet density value of the solidified soil, if the adjusted wet density of the adjustment solidified soil is smaller than the target wet density value of the solidified soil, the solidified material can be continuously added into the forced mixer 3 through the second screw conveyor 202 until the adjusted wet density value of the adjustment solidified soil reaches the preset target value, and then the adjustment solidified soil is conveyed into the tailing filling pump 4 through the discharge opening 301 of the forced mixer and conveyed to a backfill field through the conveying pipeline 401 to be poured and backfilled, and the wet density of the original sludge is controlled and adjusted to obtain the solid-state material with uniform quality, the silt is stably regulated, the influence of the original silt property caused by property fluctuation is reduced to the maximum extent, and the quality and the flow value of the solidified soil for pouring and backfilling are ensured.
The test method of the relation between the water adding amount and the wet density of the undisturbed sludge comprises the following steps:
Step 1, measuring wet density rho 1 of undisturbed sludge;
Step 2, setting the weight m of the undisturbed sludge and a wet density target value rho 2 of the undisturbed sludge, which are input into the mud-decomposing machine 1 each time by a weighing feeder;
Step 3, calculating the soil volume m 1, the soil volume v 1, the water volume m 2 and the water volume v 2 of the undisturbed sludge according to a formula;
m1+m2=m
Setting the addition amount m 3 of the curing material according to the target strength of the curing soil, and knowing the volume solid v 3 of the curing material according to the addition amount of the curing material;
Comparing ρ 1 with ρ 2, if ρ 1＞ρ2, calculating the mass of water to be added m 4 and the volume of water to be added v 4 according to the formula,
In another aspect, the system further comprises a water adding system, comprising:
A water storage tank 6;
a first water pipe 601, a water inlet of which is communicated with the water storage tank 6, and a water outlet of which is communicated with a feed inlet of the mud decomposing machine 1;
a second water pipe 602, the water inlet of which is communicated with the water storage tank 6, and the water outlet of which is communicated with the feed inlet of the second screw conveyor 202.
In this technical scheme, storage water tank 6 communicates with the feed inlet of mud-dissolving machine 1 and second screw conveyer 202 through first water pipe 601 and second water pipe 602 respectively, when the wet density of the raw mud in mud-dissolving machine 1 exceeds the target value that presets, need add water to mud-dissolving machine 1, after the staff calculates the water quantity that needs to add, can add the calculated water quantity to mud-dissolving machine 1 through opening the valve between storage water tank 6 and first water pipe 601, make the wet density of the adjustment mud in mud-dissolving machine 1 reach the target value that presets, and when the wet density of the raw mud measured by wet density measuring instrument 102 in mud-dissolving machine 1 also can judge whether the sticky grain is many or sand grain is many through the wet density, and confirm the basic property of raw mud from this, if the sticky grain content is higher in the raw mud, in order to strengthen the contact and mixed homogeneity of raw mud and solidifying material, can directly carry out the raw mud-adding to the forced mixer, and add calculated water quantity to fill hopper 201, can add the water to the screw conveyer 202 through the second screw conveyer and mix the water to the second screw conveyer 202 after the water-adding to the second screw conveyer 202 and the system is the mixed state, finally, can be adjusted to the water-adding system is added to the water to the cement-adding system to the water of the cement-adding machine, and the system is the mixed system is replaced by the second screw conveyer to the water-adding the water to the solidifying material is the water-adding the water to the solidifying system to be mixed into the water-like material to the water-like 3 after the water-like material is the solidification.
In another aspect, the weighing feeder includes:
A frame;
A sludge storage hopper 7 fixedly arranged on the frame and used for storing undisturbed sludge;
A third screw conveyor 701, which is fixedly arranged on the frame and is positioned right below the mud storage hopper 7, wherein a feed inlet of the third screw conveyor 701 is communicated with a discharge outlet of the mud storage hopper 7, and a discharge outlet of the third screw conveyor 701 is communicated with a feed inlet of the mud decomposing machine 1;
A second load cell 702 is disposed at the bottom of the frame for weighing the frame, the third screw conveyor 701 and the mud bucket 7.
In this technical scheme, the frame is arranged in fixed storage mud fill 7 and third screw conveyer 701, and the feed inlet of third screw conveyer 701 communicates with the discharge gate of storage mud fill 7, the discharge gate communicates with the feed inlet of mud dissolving machine 1, when the mud storage fill 7 is thrown into to the mud storage mud fill with former state silt, storage mud fill 7 accessible third screw conveyer 701 carries former state silt to mud dissolving machine 1, and carry out dynamic weighing to former state silt through second weighing sensor 702, mud storage fill 7, third screw conveyer 701 and third support, before throwing into the mud storage fill 7 with former state silt, can calculate the weight of the weighing feeder that contains former state silt that needs to carry, observe the numerical value that shows on second weighing sensor 702 when carrying former state silt to mud dissolving machine 1 through third screw conveyer 701, and judge whether the weight of former state silt that carries in judging the third screw conveyer is consistent with the weight of setting, if unanimously stop the ration transport function of third screw conveyer 701 carries out the dynamic weighing to former state silt, the weight of the former state silt is realized in order to reach the accurate setting up in mud storage mud fill 1, the accurate alarm weight of the alarm is realized in the frame when setting up the accurate alarm device 703 in the mud dissolving machine 1, the accurate alarm device is realized, the alarm is further carried out in the setting up of the automatic alarm device for the mud is realized.
In another technical scheme, the device further comprises a stirring device 8 which is fixedly arranged inside the mud decomposing machine 1 and is used for stirring raw mud input into the mud decomposing machine 1.
In this technical scheme, agitating unit 8 is used for stirring undisturbed silt and water after the water adding system water addition is accomplished, makes its intensive mixing, can improve the wet density's of the adjustment silt precision of wet density measuring apparatu 102 measurement.
In another technical scheme, the stirring device 8 comprises two first rotating rods 801, which are oppositely arranged at two ends of the mud decomposing machine 1, one end of any one first rotating rod 801 passes through one side of the mud decomposing machine 1 to be rotationally connected with one side of the bracket, the other end of the first rotating rod 801 is rotationally connected with the other side of the bracket through a first driving device 803, and a plurality of first rake rods 802 are fixedly arranged on the outer side wall of any one first rotating rod 801 and are circumferentially arranged at intervals along the length direction of the first rotating rod 801.
In this technical scheme, agitating unit 8 sets up in the inside of mud machine 1 for accomplish the back to original form silt and water at every turn adding water, original form silt is because long-term deposit leads to original form silt granule to agglomerate each other, if not carry out broken stirring to original form silt, can prolong original form silt and water mixing's time, and can seriously influence original form silt and solidification material's mixed effect under the condition that does not need adding water, drive arrangement is preferably the motor, can drive two first dwang 801 relative rotation through starting drive arrangement, in order to break original form silt, and the harrow pole on the first dwang 801 sets up around the circumference of first dwang 801, can further improve the crushing effect to original form silt, the particle agglomeration thing in the maximize messenger original form silt is dissociated, improve original form silt's homogeneity and mobility.
In another aspect, the curing material adding device further includes:
A powder bin 2 fixedly arranged and used for storing the solidified material;
And a feeding port of the fourth screw conveyor 204 is communicated with a discharging port of the powder bin 2, and a discharging port of the fourth screw conveyor 204 is communicated with a feeding port of the weighing hopper 201.
In this technical scheme, the fixed setting of powder granary is used for storing the solidified material, the discharge gate of powder storehouse 2 communicates with the feed inlet of fourth screw conveyer 204, the discharge gate of fourth screw conveyer 204 communicates with the feed inlet of weighing hopper 201, after calculating the weight of the solidified material that needs to add, start powder storehouse 2, the solidified material in powder storehouse 2 carries in weighing hopper 201 through the fourth screw, first weighing sensor 203 weighs the weight of weighing hopper 201 in real time, after the weight that the weight of weighing is equal to the additive amount that the solidified material calculated and the weight of weighing hopper 201 that does not contain the solidified material, operating personnel pause fourth screw conveyer 204 and carry the solidified material, thereby realize the accurate batching of solidified material's purpose, practice thrift construction cost.
In another technical solution, the mud storage hopper further comprises a grid 704 fixedly arranged at the top of the mud storage hopper 7, wherein the aperture of the grid 704 is smaller than 10cm.
In this technical scheme, the original form silt is through dig the machine and give into in the storage mud bucket 7, dig the machine when getting the original form silt, can make to contain a large amount of construction waste and gravel in the original form silt, grid 704 can make the original form silt carry out primary screening before getting into storage mud bucket 7, screens out bigger construction waste and gravel, prevents that the massive impurity from causing the machine loss to the jam of tailing filling pump 4.
In another embodiment, the device further comprises a stirrer 705, which is disposed inside the sludge hopper 7, and the stirrer 705 comprises:
One end of the second rotating rod penetrates through one side of the mud storage hopper 7 to be rotationally connected with one side of the frame, and the other end of the second rotating rod is rotationally connected with the other side of the frame through a second driving device;
the plurality of second harrow bars are fixedly arranged on the outer side wall of the second rotating rod and are circumferentially arranged at intervals along the length direction of the second rotating rod.
In this technical scheme, set up second dwang and second harrow pole in storing up mud bucket 7, can make former form silt enter into in mud machine 1 and carry out the secondary stirring after carrying out primary stirring in storing up mud bucket 7, further improve the crushing effect of former form silt.
In another embodiment, the method further includes an arithmetic controller 5, which includes:
A storage unit for storing a wet density target value of the undisturbed sludge, a wet density target value of solidified soil, the weight of the undisturbed sludge conveyed by the weighing feeder each time, and the relationship between the liquid limit value of the undisturbed sludge and the water adding amount and the wet density of the undisturbed sludge;
A calculation unit which acquires data measured by the wet density measuring instrument 102, compares the data with a wet density target value of the undisturbed sludge, calculates the water adding amount according to the relationship between the water adding amount and the wet density of the undisturbed sludge, and compares the wet density of the undisturbed sludge with the wet density target value of the solidified soil to calculate the addition amount of the solidified material;
a control unit which acquires the weighing data of the second weighing sensor 702 and controls the output weight of the undisturbed sludge by the weighing feeder, and also acquires the weighing data of the first weighing sensor 203 and controls the output weight of the curing material by the curing material adding device and the water adding system;
the storage unit, the calculation unit and the control unit mutually transmit information.
In the technical scheme, for the properties of different original sludge, a wet density target value of solidified soil, the weight of original sludge conveyed by a weighing feeder each time, a relation between a liquid limit value of original sludge and the water adding amount and wet density of original sludge are stored in a storage unit of an operation controller 5, original sludge is discharged into the weighing feeder through a digger, the weight of original sludge input into a mud decomposing machine 1 by the weighing feeder is controlled by a control unit, so that the purpose of quantitatively conveying original sludge each time by the weighing feeder is realized, a wet density measuring instrument 102 in the mud decomposing machine 1 measures the wet density of original sludge in real time and feeds back to a calculation unit of the operation controller 5 to be compared with the wet density target value of original sludge, and if the fed-back wet density is smaller than the wet density target value, the calculation unit calculates the water adding amount according to the relation between the wet density and the water adding amount, and feeds the water adding amount back to the control unit, the control unit controls the water adding system to add the calculated water amount into the mud dissolving machine 1, the stirring device 8 stirs the original mud and the water to obtain the adjusted mud after the water adding is completed, the wet density measuring instrument 102 measures the wet density of the adjusted mud again and compares the wet density with the wet density target value of the original mud again, if the wet density of the original mud is still smaller than the wet density target value, the control unit continues to control the water adding system to add water until the wet density of the adjusted mud measured by the wet density measuring instrument 102 reaches the preset target value, the calculation unit compares the wet density of the adjusted mud with the wet density target value of the solidified soil, and calculates the weight of the solidified material to be added, while adjusting the sludge to be conveyed to the forced mixer 3 through the first screw conveyor 101 at the bottom of the sludge decomposing machine 1, a worker starts the powder silo 2 to add the calculated addition amount of the solidified material into the weighing hopper 201, and the calculation unit calculates in real time the difference between the weight displayed by the first weighing sensor 203 and the weight of the weighing hopper 201 without the solidified material and the calculated addition amount of the solidified material to judge whether the addition amount of the solidified material reaches the calculated weight, if the difference is zero, the addition of the solidified material is stopped, the solidified material is conveyed to the forced mixer through the second screw conveyor 202 to be mixed with the adjusted sludge to obtain adjusted solidified soil, the worker samples the adjusted solidified soil to measure the wet density thereof and compares the sampled and adjusted solidified soil with a target wet density value, if the wet density of the adjusted solidified soil is smaller than the target wet density value of the solidified soil, the second screw conveyor 202 is used for continuously adding the solidified material into the forced mixer 3 until the wet density value of the adjusted solidified soil reaches the preset target value, the solidified material is input into the tailing filling pump 4 through the forced mixer and is conveyed to a backfill field through the conveying pipeline 401 to be poured and backfilled, the wet density of the original sludge is controlled and adjusted through the operation controller 5, the adjusted sludge with uniform and stable quality is obtained, and the influence of the original sludge property caused by property fluctuation is reduced to the greatest extent, so that the quality and the flow value of the poured and backfilled solidified soil are ensured. The invention also provides a preparation process of the pumpable pouring backfill solidified soil, which comprises the following steps:
Step 1, completing the assembly of the preparation system on the ground, and presetting a wet density target value of undisturbed sludge, a wet density target value of solidified soil A 1, the weight of undisturbed sludge conveyed by a weighing feeder each time, a liquid limit value of undisturbed sludge and the relationship between the water adding amount and the wet density of undisturbed sludge in a storage unit of an operation controller 5;
Step 2, a control unit of the operation controller 5 controls the weighing feeder to quantitatively convey undisturbed sludge into the mud-decomposing machine 1 each time, and simultaneously, the wet density measurement at the bottom of the mud-decomposing machine 1 measures the wet density of the undisturbed sludge input into the mud-decomposing machine 1 and feeds back measured data to a calculation unit of the operation controller 5;
Step 3, the calculation unit of the operation controller 5 compares the data fed back by the wet density measuring instrument 102 with a preset wet density target value of original sludge, when the fed back data exceeds the preset target value, water needs to be added into the sludge decomposing machine 1, otherwise, water does not need to be added, when water needs to be added, the calculation unit calculates the water adding amount according to the relation between the water adding amount and the wet density of the original sludge, the calculated water amount is calculated by the calculation unit and is transmitted to the control unit, the control unit controls the water adding system to add the calculated water amount into the sludge decomposing machine 1, the wet density of the original sludge is adjusted, the stirring device 8 stirs the original sludge and the water to obtain adjusted sludge, and when the wet density of the adjusted sludge reaches the preset target value in the operation controller 5, the water adding is stopped;
After the water addition is completed, the calculation unit of the operation controller 5 compares the wet density of the adjusted sludge with the wet density target value of the solidified soil, and if the wet density of the adjusted sludge is smaller than the wet density target value of the solidified soil, the calculation unit of the operation controller 5 calculates and analyzes the addition amount of the solidified material, so that the wet density and the strength of the solidified soil are controlled to be kept in a reasonable range, and the quality of the solidified soil is kept stable;
Step 5, conveying the adjustment sludge in the sludge decomposing machine 1 to the forced mixer 3 through the first screw conveyor 101, meanwhile, adding the curing material in the powder bin 2 into the weighing hopper 201 through the fourth screw conveyor 204, dynamically weighing the weight of the added curing material through the first weighing sensor 203 at the bottom of the weighing hopper 201, transmitting the weighing result to a control unit of the operation controller 5 in real time, and stopping adding the curing material into the weighing hopper 201 through the fourth screw conveyor 204 when the weight weighed by the first weighing sensor 203 is consistent with the addition amount of the curing material calculated and analyzed in the calculation unit of the operation controller 5, and conveying the curing material in the weighing hopper 201 to the forced mixer 3 through the second screw conveyor 202;
Step 6, starting the forced mixer 3, uniformly mixing the adjustment sludge and the curing material for a preset stirring time to obtain adjustment curing soil, comparing the wet density of the adjustment curing soil with a target wet density value of the curing soil, and if the wet density of the adjustment curing soil is still smaller than the target wet density value of the curing soil, continuously adding the curing material into the forced mixer 3 until the wet density value of the adjustment curing soil reaches the preset target value;
and 7, unloading the solidified soil with the wet density reaching the preset target value from the discharge opening 301 at the bottom of the forced mixer 3 into the tailing filling pump 4, and conveying the solidified soil to a backfill field through the conveying pipeline 401 for pouring and backfilling.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
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| CN110616762A (en) * | 2019-10-11 | 2019-12-27 | 中交天津航道局有限公司 | Marine dredging sludge solidification integrated treatment equipment |
| CN214520965U (en) * | 2021-01-04 | 2021-10-29 | 武汉二航路桥特种工程有限责任公司 | Preparation system capable of pumping, pouring, backfilling and solidifying soil |
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| CN104016626B (en) * | 2014-06-10 | 2015-06-17 | 广州市水电建设工程有限公司 | Sludge curing agent and sludge curing process employing sludge curing agent |
| US10920390B2 (en) * | 2017-11-24 | 2021-02-16 | Southeast University | Treatment system and method for ex-situ carbonization and solidification of silt soil using active magnesium oxide |
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| CN110616762A (en) * | 2019-10-11 | 2019-12-27 | 中交天津航道局有限公司 | Marine dredging sludge solidification integrated treatment equipment |
| CN214520965U (en) * | 2021-01-04 | 2021-10-29 | 武汉二航路桥特种工程有限责任公司 | Preparation system capable of pumping, pouring, backfilling and solidifying soil |
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