CN112692981A - Preparation system and preparation process of pumpable pouring backfill solidified soil - Google Patents
Preparation system and preparation process of pumpable pouring backfill solidified soil Download PDFInfo
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- CN112692981A CN112692981A CN202110004645.2A CN202110004645A CN112692981A CN 112692981 A CN112692981 A CN 112692981A CN 202110004645 A CN202110004645 A CN 202110004645A CN 112692981 A CN112692981 A CN 112692981A
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- 239000002689 soil Substances 0.000 title claims abstract description 98
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000010802 sludge Substances 0.000 claims abstract description 247
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 137
- 238000005303 weighing Methods 0.000 claims description 108
- 239000000463 material Substances 0.000 claims description 87
- 238000003860 storage Methods 0.000 claims description 51
- 238000003756 stirring Methods 0.000 claims description 33
- 238000004364 calculation method Methods 0.000 claims description 23
- 238000002156 mixing Methods 0.000 claims description 18
- 238000011049 filling Methods 0.000 claims description 16
- 239000000843 powder Substances 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000001739 density measurement Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 abstract description 10
- 230000001105 regulatory effect Effects 0.000 abstract description 10
- 238000007711 solidification Methods 0.000 description 8
- 230000008023 solidification Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a preparation system and a preparation process of pumpable pouring backfill solidified soil. According to the invention, the uniform and stable quality of the regulated sludge is obtained by controlling and regulating the wet density of the undisturbed sludge, the influence of the nature of the undisturbed sludge caused by character fluctuation is reduced to the maximum extent, and the quality and the flow value of the solidified soil poured and backfilled are ensured.
Description
Technical Field
The invention relates to the field of sludge and solidified soil treatment. More specifically, 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 rivers and lakes and keep the smoothness of channels and ports, large-scale dredging and dredging projects are developed in all countries including China. According to statistics, the amount of dredged sludge produced in China only in the Zhujiang Delta zone per year reaches 8000 ten thousand meters3On the left and right, the amount of sludge thrown into the ocean every year in China is close to 2 hundred million m3And still in the hydraulic and oceanic projects a large amount of dredged sludge will be produced in the coming decade, the disposal of which has become an elusive problem.
Dredged sludge generated in 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, and the effective utilization of ocean resources is seriously influenced by throwing the dredged sludge to open sea, and the ocean environment is irreparably damaged; on the other hand, most of the dredged sludge contains pollutants such as heavy metals, organic matters and the like, and secondary pollution to the surrounding environment is inevitably caused without effective treatment.
In recent years, sludge solidification treatment technology is gradually developed, sludge is mixed with cement, lime, fly ash or a special cementing material such as a soil solidifying agent and the like, and then a series of physical and chemical reactions are carried out to improve mechanical indexes of the sludge and form a backfill material meeting engineering requirements, the method can effectively reduce pollution of heavy metals, organic matters and the like, but the quality requirements of solidified soil cannot be guaranteed due to the influence of the properties, the water content and the like of the sludge, and when the water content of the sludge is increased, the strength of the solidified soil can be obviously reduced, so that the quality is unqualified; when the water content of the sludge is reduced, the flow value of the solidified soil is obviously reduced, so that pumping is difficult; in addition, the utilization of the solidified soil at present mainly comprises paving and rolling operation, the process is complicated, the construction period is long, the cost is high, and the requirement of underwater backfill is difficult to meet.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
The invention also aims to provide a preparation system and a preparation process of the pumpable pouring backfill solidified soil, which can control and adjust the wet density of the undisturbed sludge to obtain the regulated sludge with uniform and stable quality, maximally reduce the influence of the undisturbed sludge caused by character fluctuation, and ensure the quality and the flow value of the pouring backfill solidified soil.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a pumpable, placement, backfill and solidification soil preparation system, including a raw sludge feeding device and a solidification material feeding device for feeding raw sludge and solidification material, respectively, into a forced mixer, and a backfilling device communicating with a backfill field,
undisturbed sludge conveying device includes:
the weighing feeder is fixedly arranged and used for controlling the weight of the undisturbed sludge;
the mud removing machine is fixedly arranged through a support, and a feeding hole of the mud removing machine is communicated with the weighing feeder;
a feed inlet of the first screw conveyor is communicated with a discharge outlet of the sludge remover;
the wet density measuring instrument is arranged inside the sludge decomposing machine and is used for monitoring the wet density of undisturbed sludge;
the solidified material adding device includes:
a second screw conveyor fixedly provided;
the weighing hopper is fixedly arranged right above the second spiral conveyor and is communicated with a feeding hole of the second spiral conveyor;
the first weighing sensor is clamped between the weighing hopper and the second spiral conveyor to acquire the weight of the weighing hopper;
the forced mixer comprises:
the mixing barrel is arranged on the ground, the discharge holes of the first spiral conveyor and the second spiral conveyor are communicated with the feed hole of the mixing barrel, and the bottom of the mixing barrel is provided with a discharge hole;
the stirring shaft is fixedly arranged inside the stirring barrel;
the backfill device comprises:
the tailing filling pump is arranged on the ground, and a feeding hole of the tailing filling pump is communicated with a discharging hole at the bottom of the stirring barrel;
and one end of the conveying pipeline is communicated with a discharge hole of the tailing filling pump, and the other end of the conveying pipeline is communicated with the backfill field.
Preferably, the water adding system comprises:
a water storage tank;
a water inlet of the first water pipe is communicated with the water storage tank, and a water outlet of the first water pipe is communicated with a feed inlet of the desliming machine;
and a water inlet of the second water pipe is communicated with the water storage tank, and a water outlet of the second water pipe is communicated with a feed inlet of the second screw conveyor.
Preferably, the gravimetric feeder comprises:
a frame;
the mud storage hopper is fixedly arranged on the rack and used for storing undisturbed mud;
the third screw conveyor is fixedly arranged on the rack and is positioned right below the sludge storage hopper, a feed port of the third screw conveyor is communicated with a discharge port of the sludge storage hopper, and a discharge port of the third screw conveyor is communicated with a feed port of the sludge decomposing machine;
and the second weighing sensor is arranged at the bottom of the rack so as to obtain the weight of the rack, the third screw conveyor and the mud bucket.
Preferably, the sludge treatment device further comprises a stirring device which is fixedly arranged inside the sludge decomposing machine and is used for stirring the undisturbed sludge input into the sludge decomposing machine.
Preferably, the stirring device comprises two first rotating rods which are oppositely arranged at two ends of the mud removing machine, one end of any one first rotating rod penetrates through one side of the mud removing machine to be rotatably connected with one side of the support, and the other end of the first rotating rod is rotatably connected with the other side of the support through a first driving device; a plurality of first rake rods are fixedly arranged on the outer side wall of any one first rotating rod and are circumferentially arranged at intervals along the length direction of the first rotating rod.
Preferably, the solidified material adding apparatus further includes:
a powder bin fixedly arranged and used for storing the solidified material;
and a feed inlet of the fourth screw conveyor is communicated with a discharge outlet of the powder bin, and a discharge outlet of the fourth screw conveyor is communicated with a feed inlet of the weighing hopper.
Preferably, the device further comprises a grid which is fixedly arranged at the top of the mud storage hopper, and the aperture of the grid is smaller than 10 cm.
Preferably, the sludge treatment device further comprises a stirrer arranged inside the sludge storage hopper, wherein the stirrer comprises:
one end of the second rotating rod penetrates through one side of the sludge storage hopper and is rotatably connected with one side of the rack, and the other end of the second rotating rod is rotatably connected with the other side of the rack through a second driving device;
and the plurality of second rake levers are fixedly arranged on the outer side wall of the second rotating lever and are circumferentially arranged at intervals along the length direction of the second rotating lever.
Preferably, the apparatus further comprises an arithmetic controller including:
the storage unit is used for storing a wet density target value of the undisturbed sludge, a wet density target value of the solidified soil, the weight of the undisturbed sludge conveyed by the weighing and feeding machine each time, and a relation between a liquid limit value of the undisturbed sludge and a water adding amount and wet density of the undisturbed sludge;
a calculating unit for obtaining the data measured by the wet density measuring instrument, comparing the data with the wet density target value of the undisturbed sludge, calculating the water adding amount according to the relation between the water adding amount and the wet density of the undisturbed sludge, and comparing the wet density of the undisturbed 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 the weighing data of the second weighing sensor and controlling the output weight of the undisturbed sludge by the weighing feeder, and also acquiring the weighing data of the first weighing sensor, controlling the output weight of the solidified material by the solidified 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: the preparation system is assembled on the ground, and a wet density target value of the undisturbed sludge, a wet density target value of the solidified soil, the weight of the undisturbed sludge conveyed by the weighing feeder each time, a liquid limit value of the undisturbed sludge and a relation between the water adding amount and the wet density of the undisturbed sludge are preset in a storage unit of the operation controller;
step 2: the control unit of the operation controller controls the weighing feeder to quantitatively convey the undisturbed sludge to the sludge decomposing machine every time, and meanwhile, wet density measurement at the bottom of the sludge decomposing machine measures the wet density of the undisturbed sludge input to the sludge decomposing machine and feeds measured data back to the calculation unit of the operation controller;
and 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 the undisturbed sludge, when the fed back data exceeds the preset target value, water needs to be added into the sludge disintegrating machine, otherwise, the water is not added, when the water needs to be added, the calculation unit calculates the water addition amount according to the relation between the water addition amount and the wet density of the undisturbed sludge and transmits the water addition amount to the control unit, the control unit controls the water adding system to add the calculated water amount into the sludge disintegrating machine according to the calculated water addition amount to adjust the wet density of the undisturbed sludge, meanwhile, the stirring device stirs the undisturbed sludge and the water to obtain adjusted sludge, and when the wet density of the adjusted sludge reaches the target value preset in the storage unit of the operation controller, the water adding is stopped;
and 4, step 4: after the water is added, the calculation unit of the operation controller compares the wet density of the adjusted sludge with the target wet density value of the solidified soil, and when the wet density of the adjusted sludge is smaller than the target wet density value of the solidified soil, the calculation unit of the operation controller calculates and analyzes the addition amount of the solidified material;
and 5: conveying the adjusted sludge in the sludge decomposing machine to a forced mixer through a first screw conveyor, adding a solidified material into a weighing hopper through a fourth screw conveyor by using a solidified material in a powder bin, dynamically weighing the weight of the added solidified material by using a first weighing sensor at the bottom of the weighing hopper, and transmitting a weighing result to a control unit of an arithmetic controller in real time;
step 6: starting the forced mixer, uniformly mixing the adjusted sludge and the solidified material by maintaining the preset mixing time to obtain adjusted solidified soil, comparing the wet density of the adjusted solidified soil with the target wet density value of the solidified soil, and if the wet density of the adjusted solidified soil is still smaller than the target wet density value of the solidified soil, continuously adding the solidified material into the forced mixer until the wet density of the adjusted solidified soil reaches the preset target value;
and 7: discharging the adjusted solidified soil with the wet density reaching a preset target value into a tailing filling pump from a discharge opening at the bottom of the forced mixer, and conveying the soil to a backfill yard through a conveying pipeline for pouring and backfilling.
The invention at least comprises the following beneficial effects:
1. according to the invention, the uniform and stable quality of the regulated sludge is obtained by controlling and regulating the wet density of the undisturbed sludge, the influence of the nature of the undisturbed sludge caused by character fluctuation is reduced to the maximum extent, and the quality and the flow value of the solidified soil poured and backfilled are ensured.
2. According to the invention, the flowability of the undisturbed sludge is improved through the stirring device, the mixing uniformity of the undisturbed sludge and the solidified material is realized, the pumping pouring backfill requirement of the solidified soil is met, the large-scale backfill engineering of the solidified soil is facilitated, and the construction is convenient.
3. According to the invention, the purpose of accurate batching is realized by combining the second weighing sensor with the operation controller, the waste of curing materials is reduced while the quality of the poured and backfilled curing soil is ensured, 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 structural diagram of a frame of a process for preparing pumpable, concreting, backfilling and solidifying soil according to the invention;
FIG. 2 is a schematic structural diagram of a system for preparing pumpable concreting backfill solidified soil according to the invention;
fig. 3 is a schematic structural view of the stirring device of the present invention.
The specification reference numbers indicate:
1. the device comprises a mud removing machine, 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 mixer, 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 mixer, 8, a mixer, 801, a first rotating rod, 802, a first rake rod, 803 and a first driving device.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It should be noted that in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-3, the present invention provides a pumpable preparation system for pouring backfill solidified soil, comprising a raw sludge conveying device and a solidified material adding device for adding raw sludge and solidified material into a forced mixer 3, respectively, and a backfilling device communicated with a backfilling field,
undisturbed sludge conveying device includes:
the weighing feeder is fixedly arranged and used for controlling the weight of the undisturbed sludge;
the mud removing machine 1 is fixedly arranged through a support, and a feeding hole of the mud removing machine 1 is communicated with the weighing feeder;
a feed inlet of the first screw conveyor 101 is communicated with a discharge outlet of the sludge remover 1;
a wet density measuring instrument 102, which is arranged inside the sludge disintegrator 1 and is used for monitoring the wet density of the undisturbed sludge;
the solidified material adding device includes:
a second screw conveyor 202 fixedly provided;
the weighing hopper 201 is fixedly arranged right above the second spiral conveyor 202 and is communicated with a feeding hole of the second spiral conveyor 202;
a first weighing sensor 203 clamped between the weighing hopper 201 and the second screw conveyor 202 to obtain the weight of the weighing hopper 201;
the forced mixer 3 includes:
the mixing barrel is arranged on the ground, the discharge holes of the first spiral conveyor 101 and the second spiral conveyor 202 are communicated with the feed hole of the mixing barrel, and the bottom of the mixing barrel is provided with a discharge hole 301;
the stirring shaft is fixedly arranged inside the stirring barrel;
the backfill device comprises:
the tailing filling pump 4 is arranged on the ground, and a feeding hole of the tailing filling pump 4 is communicated with a discharging hole 301 at the bottom of the stirring barrel;
and one end of the conveying pipeline 401 is communicated with a discharge hole of the tailing filling pump 4, and the other end of the conveying pipeline is communicated with the backfill field.
In the above technical scheme, the weighing feeder is fixedly arranged and communicated with the mud disintegrating machine 1, the original mud in the weighing feeder can be conveyed into the mud disintegrating machine 1 from the feeding port of the mud disintegrating machine 1, the discharging port of the mud disintegrating machine 1 is communicated with the forced mixer 3 through the first screw conveyor 101, the original mud in the mud disintegrating machine 1 can be conveyed into the forced mixer, the solidified material can be placed in the weighing hopper 201, the discharging port of the weighing hopper 201 is communicated with the feeding port of the second screw conveyor 202, the discharging port of the second screw conveyor 202 is communicated with the feeding port of the forced mixer 3, namely, the solidified 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 original mud to obtain solidified soil, and backfilling and pouring are performed, because the original mud has different properties, the required solidified soil has different wet density and strength, before the solidified soil is prepared, the relation between the water adding amount and the wet density of the undisturbed sludge needs to be measured through tests, a wet density target value of the undisturbed sludge and a wet density target value of the solidified soil are preset according to the flow value of the undisturbed sludge, the test shows that the water adding amount of the undisturbed sludge is in inverse proportion to the wet density, after the target values are set, the undisturbed sludge is added into a weighing feeder through a digging machine on a construction site, the undisturbed sludge enters a mud disintegrating machine 1 from a feed inlet of the mud disintegrating machine 1, a wet density measuring instrument 102 capable of monitoring the wet density of the undisturbed sludge is further arranged inside the mud disintegrating machine 1, in order to conveniently control the wet density of the undisturbed sludge, the weight of the undisturbed sludge which is input into the mud disintegrating machine 1 by the weighing feeder each time needs to be set, when the weight of the undisturbed sludge which is input into the mud disintegrating machine 1 by the weighing feeder reaches the set value, a worker suspends the conveying work of the, and according to the data measured by the wet density measuring instrument 102 and the wet density target value of the raw sludge, judging whether water needs to be added into the sludge disintegrating machine 1, if so, working personnel calculates the water adding amount according to the relation between the water adding amount of the raw sludge obtained by the test and the wet density, and adds the calculated water amount from the feed inlet of the sludge disintegrating machine 1, the raw sludge is mixed with the water to form an adjusted sludge, then the wet density of the adjusted sludge is measured by the wet density measuring instrument 102 and is compared with the wet density target value of the raw sludge again, if the wet density of the raw sludge is less than the target value, the water is continuously added until the wet density of the adjusted sludge reaches the preset target value, the water adding is stopped, the wet density of the adjusted sludge is compared with the wet density target value of the solidified soil, the weight of the solidified material needing to be added is calculated, the adjusted sludge passes through the discharge outlet of the sludge disintegrating machine 1 and is conveyed to the forced mixer 3, the method comprises the steps that a worker adds calculated addition amount of solidified materials into a feeding hole of a weighing hopper 201, the worker can judge whether the addition amount of the solidified materials reaches the calculated weight according to a 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 a second spiral conveyor 202, the worker can know the weight of the weighing hopper 201 without the solidified materials through the first weighing sensor 203, when the solidified materials are 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 solidified materials and the calculated addition amount of the solidified materials, the solidified materials are stopped being added, the solidified materials in the weighing hopper 201 can be conveyed into a forced mixer through the second spiral conveyor 202 to be mixed with regulated sludge to obtain regulated solidified soil, the worker samples and measures the humidity density of the regulated solidified soil and carries out target value with the humidity density of the regulated solidified soil And comparing, if the adjusted wet density of the solidified soil is smaller than the target wet density value of the solidified soil, continuously adding the solidified material into the forced mixer 3 through the second screw conveyor 202 until the adjusted wet density value of the solidified soil reaches the preset target value, inputting the solidified material into the tailing filling pump 4 through the discharge opening 301 of the forced mixer, conveying the solidified material to a backfill field through a conveying pipeline 401 for pouring and backfilling, controlling and adjusting the wet density of the original sludge to obtain the uniformly and stably-quality adjusted sludge, and maximally reducing the influence of the original sludge property caused by character fluctuation to ensure the quality and the flow value of the poured and backfilled solidified soil.
The method for testing 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 of undisturbed sludge1；
Step 2: setting the weight m of the undisturbed sludge fed into the sludge disintegrating machine 1 by the weighing feeder each time and the wet density target value rho of the undisturbed sludge2；
And step 3: calculating the soil amount m of the undisturbed sludge according to a formula1Volume of soil v1Water amount m2And a water volume v2；
m1+m2＝m
And 4, step 4: setting the addition amount m of the curing material according to the target strength of the curing soil3The volume solid v of the curing material can be known from the addition amount of the curing material3；
Comparison of rho1And ρ2If ρ1＞ρ2Calculating the mass m of water to be added according to a formula4And volume v of water added4，
In another technical scheme, the system also comprises a water adding system, which comprises:
a water storage tank 6;
a water inlet of the first water pipe 601 is communicated with the water storage tank 6, and a water outlet of the first water pipe is communicated with a feed inlet of the desliming machine 1;
and a water inlet of the second water pipe 602 is communicated with the water storage tank 6, and a water outlet thereof is communicated with the feed inlet of the second screw conveyor 202.
In the technical scheme, a water storage tank 6 is respectively communicated with feed inlets of a sludge disintegrating machine 1 and a second screw conveyor 202 through a first water pipe 601 and a second water pipe 602, when the wet density of raw sludge in the sludge disintegrating machine 1 exceeds a preset target value, water needs to be added into the sludge disintegrating machine 1, after a worker calculates the water amount needed to be added, the calculated water amount can be added into the sludge disintegrating machine 1 by opening a valve between the water storage tank 6 and the first water pipe 601, so that the wet density of regulated sludge in the sludge disintegrating machine 1 reaches the preset target value, when the wet density of the raw sludge measured by a wet density measuring instrument 102 in the sludge disintegrating machine 1, whether the raw sludge is sticky or has more sand grains can be judged through the wet density, and therefore, the basic properties of the raw sludge can be determined, when the content of the sticky grains in the raw sludge is higher, in order to enhance the contact and mixing uniformity of the raw sludge and a solidified material, can directly carry the undisturbed silt of not adding water to in forcing the mixer to the valve between the open storage water tank 6 and the second water pipe 602 adds water to second screw conveyer 202 after the addition of the solidification material who adds the calculation in the hopper 201 of weighing, obtain the adjustment material, the adjustment material is the state that is the thick liquid after solidification material and water mix, carry then and mix with the undisturbed silt in forcing the mixer 3, pour the backfill at last, the system of adding water can replace artifical adding water, improve work efficiency.
In another aspect, the gravimetric feeder comprises:
a frame;
the sludge storage hopper 7 is fixedly arranged on the frame and used for storing undisturbed sludge;
the third screw conveyer 701 is fixedly arranged on the rack and is positioned right below the sludge storage hopper 7, a feed port of the third screw conveyer 701 is communicated with a discharge port of the sludge storage hopper 7, and a discharge port of the third screw conveyer 701 is communicated with a feed port of the sludge decomposition machine 1;
and a second weighing sensor 702, which is arranged at the bottom of the frame, for weighing the frame, the third screw conveyor 701 and the mud bucket 7.
In the technical scheme, a rack is used for fixing a sludge storage hopper 7 and a third screw conveyor 701, a feed port of the third screw conveyor 701 is communicated with a discharge port of the sludge storage hopper 7, the discharge port is communicated with a feed port of a sludge disassembling machine 1, when an excavator puts original sludge into the sludge storage hopper 7, the sludge storage hopper 7 can convey the original sludge into the sludge disassembling machine 1 through the third screw conveyor 701, the original sludge, the sludge storage hopper 7, the third screw conveyor 701 and a third support are dynamically weighed through a second weighing sensor 702, before the original sludge is put into the sludge storage hopper 7, the weight of a weighing feeder containing the original sludge to be conveyed can be calculated, the original sludge is conveyed to the sludge disassembling machine 1 through the third screw conveyor 701 while a numerical value displayed on the second weighing sensor 702 is observed, and whether the weight of the original sludge conveyed in the third screw conveyor 701 is consistent with the set weight or not is judged through a difference method, if unanimous conveying function who stops third screw conveyer 701 to reach the purpose of transporting original state silt in giving the mud machine 1 of separating of ration at every turn, realize accurate batching, still can set up alarm 703 in the frame, set up the weight of the original state silt of carrying in the alarm 703, carry out the automatic alarm suggestion when the weight that second weighing sensor 702 weighed satisfies the weight that sets up, avoid operating personnel to continue to drop into original state silt in storing up mud bucket 7, the precision of accurate batching has further been improved.
In another technical scheme, the sludge treatment device further comprises a stirring device 8 which is fixedly arranged inside the sludge disintegrating machine 1 and is used for stirring the undisturbed sludge input into the sludge disintegrating machine 1.
In this technical scheme, agitating unit 8 is used for stirring undisturbed silt and water after the watering system adds water and accomplishes, makes its intensive mixing, can improve the wet density's of the adjustment silt that wet density measuring apparatu 102 measured precision.
In another technical scheme, the stirring device 8 comprises two first rotating rods 801 which are oppositely arranged at two ends of the mud removing machine 1, one end of any one first rotating rod 801 penetrates through one side of the mud removing machine 1 to be rotatably connected with one side of the bracket, and the other end of the any one first rotating rod 801 is rotatably connected with the other side of the bracket through a first driving device 803; a plurality of first rake levers 802 are fixed on the outer side wall of any first rotating rod 801 and are circumferentially arranged along the length direction of the first rotating rod 801 at intervals.
In this technical scheme, agitating unit 8 sets up in the inside of mud machine 1 of separating, be used for adding water at every turn and accomplish after stir original-state silt and water, original-state silt is because long-term deposit, lead to the mutual reunion of original-state silt particle, if not carry out broken stirring to original-state silt, the time that can prolong original-state silt and water and mix, and then can seriously influence the mixed effect of original-state silt and solidified material under the condition that need not add water, drive arrangement is the motor preferably, can drive two first rotation poles 801 relative rotations through starting drive arrangement, with broken original-state silt, and the rake lever on first rotation pole 801 sets up around the circumference of first rotation pole 801, can further improve the crushing effect to original-state silt, the biggest granule conglomeration that makes in the original-state silt dissociates, improve the homogeneity and the mobility of original-state silt.
In another technical solution, the solidified material adding apparatus further includes:
a powder bin 2 fixedly provided and used for storing a solidified material;
and a feed inlet of the fourth screw conveyor 204 is communicated with a discharge outlet of the powder bin 2, and a discharge outlet of the fourth screw conveyor 204 is communicated with a feed inlet of the weighing hopper 201.
In this technical scheme, the fixed setting of powder storehouse is used for saving solidified material, the discharge gate of powder storehouse 2 and the feed inlet of fourth screw conveyer 204 intercommunication, the discharge gate of fourth screw conveyer 204 and the feed inlet of weighing hopper 201 communicate, after calculating the weight of the solidified material that needs to add, start powder storehouse 2, solidified material in powder storehouse 2 is through fourth screw conveyer to weighing hopper 201 in, first weighing sensor 203 carries out real-time weighing to the weight of weighing hopper 201, if the weight of calling out equals after the addition amount that solidified material calculated and the weight sum of weighing hopper 201 that does not contain solidified material, operating personnel pauses fourth screw conveyer 204 and carries solidified material, thereby realize the purpose of the accurate batching of solidified material, practice thrift construction cost.
In another technical scheme, the device also comprises a grating 704 which is fixedly arranged at the top of the mud storage hopper 7, and the aperture of the grating 704 is smaller than 10 cm.
In this technical scheme, during original state silt was given into storage hopper 7 through digging the machine, digging the machine when digging original state silt, can make and contain a large amount of building rubbish and gravel in the original state silt, grid 704 can make original state silt carry out first screening before getting into storage hopper 7, screens off great building rubbish and gravel, prevents that the jam of bold miscellaneous pair of tailing to filling pump 4 from causing the machine loss.
In another technical solution, the sludge treatment device further comprises a stirrer 705 arranged inside the sludge storage bucket 7, wherein the stirrer 705 comprises:
one end of the second rotating rod penetrates through one side of the sludge storage hopper 7 to be rotatably connected with one side of the rack, and the other end of the second rotating rod is rotatably connected with the other side of the rack through a second driving device;
and the plurality of second rake levers are fixedly arranged on the outer side wall of the second rotating lever and are circumferentially arranged at intervals along the length direction of the second rotating lever.
In this technical scheme, set up second dwang and second rake in storing up mud bucket 7, can make original state silt enter into after the first stirring in storing up mud bucket 7 and separate mud machine 1 and carry out the secondary stirring, further improve the crushing effect of original state silt.
In another technical solution, the system further includes an arithmetic controller 5, which includes:
the storage unit is used for storing a wet density target value of the undisturbed sludge, a wet density target value of the solidified soil, the weight of the undisturbed sludge conveyed by the weighing and feeding machine each time, and a relation between a liquid limit value of the undisturbed sludge and a water adding amount and 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 target wet density value of the raw sludge, calculates an added water amount according to a relation between the added water amount and the wet density of the raw sludge, and calculates an added amount of the solidification material by comparing the wet density of the raw sludge with the target wet density value of the solidification soil;
the control unit 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 solidified material by the solidified 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 different properties of original sludge, a wet density target value of the original sludge, a wet density target value of solidified soil, the weight of the original sludge conveyed by a weighing feeder each time, a liquid limit value of the original sludge, and a relation between the water adding amount and the wet density of the original sludge are stored in a storage unit of an operation controller 5, the original sludge is discharged into the weighing feeder through a digging machine, the control unit controls the weight of the original sludge input into a desliming machine 1 by the weighing feeder to realize the purpose of quantitatively conveying the original sludge by the weighing feeder each time, a wet density measuring instrument 102 in the desliming machine 1 measures the wet density of the original sludge in real time and feeds the wet density back to a calculating unit of the operation controller 5 to be compared with the wet density target value of the original sludge, and if the fed-back wet density is smaller than the wet density target value, the calculating unit calculates the water adding amount according to the relation between the wet density and the water adding amount, feeding the water adding amount back to a control unit, controlling a water adding system to add the calculated water amount into the mud disintegrating machine 1 by the control unit, stirring the original sludge and the water by a stirring device 8 after the water adding is finished to obtain adjusted sludge, measuring the wet density of the adjusted sludge again by a wet density measuring instrument 102, comparing the measured wet density with a target wet density value of the original sludge again, if the wet density of the original sludge is still smaller than the target wet density value, continuing controlling the water adding system by the control unit to add water until the wet density of the adjusted sludge measured by the wet density measuring instrument 102 reaches a preset target wet density value, stopping adding the water, comparing the wet density of the adjusted sludge with the target wet density value of solidified soil by the calculation unit, calculating the weight of the solidified material to be added, adjusting the adding amount of the solidified material to be added, conveying the sludge to a forced mixer 3 through a first screw conveyor 101 at the bottom of the mud disintegrating machine 1, starting a powder bin 2 by a worker to add the, and the calculating unit calculates 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 in real time to judge whether the addition amount of the solidified material reaches the calculated weight, if the difference is zero, the solidified material is stopped to be added, the solidified material is conveyed into the forced mixer through the second screw conveyor 202 to be mixed with the adjusted sludge to obtain adjusted solidified soil, a worker samples the adjusted solidified soil to measure the wet density of the adjusted solidified soil and compares the measured wet density with a target value of the wet density of the adjusted solidified soil, if the wet density of the adjusted solidified soil is smaller than the target value of the wet density of the solidified soil, the solidified material is continuously added into the forced mixer 3 through the second screw conveyor 202 until the wet density value of the adjusted solidified soil reaches a preset target value and then is input into the tailing filling pump 4 through the forced mixer, and the sludge is conveyed to a backfill field through a conveying pipeline 401 for pouring and backfilling, the wet density of the undisturbed sludge is controlled and adjusted through the operation controller 5, the adjusted sludge with uniform and stable quality is obtained, the influence of the undisturbed sludge property caused by character fluctuation is reduced to the maximum extent, and 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: the preparation system is assembled on the ground, and a target value of the wet density of the undisturbed sludge and solidified soil A are preset in a storage unit of the operation controller 51The target value of the wet density, the weight of the undisturbed sludge conveyed by the weighing feeder each time, the liquid limit value of the undisturbed sludge and the relation between the water adding amount of the undisturbed sludge and the wet density;
step 2: the control unit of the operation controller 5 controls the weighing feeder to quantitatively convey the undisturbed sludge to the sludge decomposition machine 1 every time, and meanwhile, the wet density measurement at the bottom of the sludge decomposition machine 1 measures the wet density of the undisturbed sludge input to the sludge decomposition machine 1 and feeds measured data back to the calculation unit of the operation controller 5;
and 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 target value of the wet density of the undisturbed sludge, when the fed back data exceeds the preset target value, water needs to be added into the sludge disintegrating machine 1, otherwise, the water is not added, when the water needs to be added, the calculation unit calculates the added water quantity according to the relation between the added water quantity and the wet density of the undisturbed sludge and transmits the added water quantity to the control unit, the control unit controls the water adding system to add the calculated water quantity into the sludge disintegrating machine 1 to adjust the wet density of the undisturbed sludge, the stirring device 8 stirs the undisturbed sludge and the water to obtain the 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;
and 4, step 4: after the water is added, the calculation unit of the operation controller 5 compares the adjusted sludge wet density with the solidified soil wet density target value, and if the adjusted sludge wet density is smaller than the solidified soil wet density target value, the calculation unit of the operation controller 5 calculates and analyzes the addition amount of the solidified material, so that the solidified soil wet density and strength are controlled to be kept in a reasonable range, and the solidified soil quality is kept stable;
and 5: conveying the adjusted sludge in the sludge decomposing machine 1 to a forced mixer 3 through a first screw conveyor 101, adding a solidified material into a weighing hopper 201 through a fourth screw conveyor 204 by using the solidified material in a powder bin 2, dynamically weighing the weight of the added solidified material by using a first weighing sensor 203 at the bottom of the weighing hopper 201, and transmitting the weighing result to a control unit of an arithmetic controller 5 in real time, when the weight weighed by the first weighing sensor 203 is consistent with the addition amount of the solidified material calculated and analyzed in a calculation unit of the arithmetic controller 5, stopping adding the solidified material into the weighing hopper 201 by using the fourth screw conveyor 204, and conveying the solidified material in the weighing hopper 201 to the forced mixer 3 through a second screw conveyor 202;
step 6: starting the forced mixer 3, uniformly mixing the adjusted sludge and the solidified material for a preset mixing time to obtain adjusted solidified soil, comparing the wet density of the adjusted solidified soil with the target wet density value of the solidified soil, and if the wet density of the adjusted solidified soil is still smaller than the target wet density value of the solidified soil, 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;
and 7: and discharging the adjusted solidified soil with the wet density reaching a preset target value into the tailing filling pump 4 from a discharge opening 301 at the bottom of the forced mixer 3, and conveying the soil to a backfill field through a conveying pipeline 401 for pouring and backfilling.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. A preparation system of pumpable pouring backfill solidified soil is characterized by comprising a raw sludge conveying device and a solidified material adding device which are respectively used for adding raw sludge and solidified material into a forced mixer, and a backfilling device communicated with a backfilling field,
undisturbed sludge conveying device includes:
the weighing feeder is fixedly arranged and used for controlling the weight of the undisturbed sludge;
the mud removing machine is fixedly arranged through a support, and a feeding hole of the mud removing machine is communicated with the weighing feeder;
a feed inlet of the first screw conveyor is communicated with a discharge outlet of the sludge remover;
the wet density measuring instrument is arranged inside the sludge decomposing machine and is used for monitoring the wet density of undisturbed sludge;
the solidified material adding device includes:
a second screw conveyor fixedly provided;
the weighing hopper is fixedly arranged right above the second spiral conveyor and is communicated with a feeding hole of the second spiral conveyor;
the first weighing sensor is clamped between the weighing hopper and the second spiral conveyor to acquire the weight of the weighing hopper;
the forced mixer comprises:
the mixing barrel is arranged on the ground, the discharge holes of the first spiral conveyor and the second spiral conveyor are communicated with the feed hole of the mixing barrel, and the bottom of the mixing barrel is provided with a discharge hole;
the stirring shaft is fixedly arranged inside the stirring barrel;
the backfill device comprises:
the tailing filling pump is arranged on the ground, and a feeding hole of the tailing filling pump is communicated with a discharging hole at the bottom of the stirring barrel;
and one end of the conveying pipeline is communicated with a discharge hole of the tailing filling pump, and the other end of the conveying pipeline is communicated with the backfill field.
2. The system for preparing pumpable concreting backfill solidified soil according to claim 1, further comprising a watering system comprising:
a water storage tank;
a water inlet of the first water pipe is communicated with the water storage tank, and a water outlet of the first water pipe is communicated with a feed inlet of the desliming machine;
and a water inlet of the second water pipe is communicated with the water storage tank, and a water outlet of the second water pipe is communicated with a feed inlet of the second screw conveyor.
3. The system of claim 1, wherein the weigh feeder comprises:
a frame;
the mud storage hopper is fixedly arranged on the rack and used for storing undisturbed mud;
the third screw conveyor is fixedly arranged on the rack and is positioned right below the sludge storage hopper, a feed port of the third screw conveyor is communicated with a discharge port of the sludge storage hopper, and a discharge port of the third screw conveyor is communicated with a feed port of the sludge decomposing machine;
and the second weighing sensor is arranged at the bottom of the rack so as to obtain the weight of the rack, the third screw conveyor and the mud bucket.
4. The system for preparing pumpable concreting, backfilling and solidifying soil according to claim 1, further comprising a stirring device fixedly arranged inside the mud-disintegrating machine for stirring the undisturbed sludge input into the mud-disintegrating machine.
5. The system for preparing pumpable pouring backfill solidified soil according to claim 4, wherein the stirring device comprises two first rotating rods which are oppositely arranged at two ends of the mud removing machine, one end of each first rotating rod penetrates through one side of the mud removing machine to be rotatably connected with one side of the support, and the other end of each first rotating rod is rotatably connected with the other side of the support through a first driving device; a plurality of first rake rods are fixedly arranged on the outer side wall of any one first rotating rod and are circumferentially arranged at intervals along the length direction of the first rotating rod.
6. The system for preparing pumpable placing backfill solidified soil according to claim 2, wherein the solidified material adding device further comprises:
a powder bin fixedly arranged and used for storing the solidified material;
and a feed inlet of the fourth screw conveyor is communicated with a discharge outlet of the powder bin, and a discharge outlet of the fourth screw conveyor is communicated with a feed inlet of the weighing hopper.
7. The system for preparing pumpable placement backfill solidified soil according to claim 3, further comprising a grid fixedly arranged on top of the mud storage hopper, wherein the aperture of the grid is less than 10 cm.
8. The system for preparing pumpable concreting, backfilling and solidifying soil according to claim 3, further comprising an agitator disposed inside the hopper, wherein the agitator comprises:
one end of the second rotating rod penetrates through one side of the sludge storage hopper and is rotatably connected with one side of the rack, and the other end of the second rotating rod is rotatably connected with the other side of the rack through a second driving device;
and the plurality of second rake levers are fixedly arranged on the outer side wall of the second rotating lever and are circumferentially arranged at intervals along the length direction of the second rotating lever.
9. The system for preparing pumpable placement backfill solidified soil according to claim 2, further comprising a calculation controller comprising:
the storage unit is used for storing a wet density target value of the undisturbed sludge, a wet density target value of the solidified soil, the weight of the undisturbed sludge conveyed by the weighing and feeding machine each time, and a relation between a liquid limit value of the undisturbed sludge and a water adding amount and wet density of the undisturbed sludge;
a calculating unit for obtaining the data measured by the wet density measuring instrument, comparing the data with the wet density target value of the undisturbed sludge, calculating the water adding amount according to the relation between the water adding amount and the wet density of the undisturbed sludge, and comparing the wet density of the undisturbed 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 the weighing data of the second weighing sensor and controlling the output weight of the undisturbed sludge by the weighing feeder, and also acquiring the weighing data of the first weighing sensor, controlling the output weight of the solidified material by the solidified material adding device and controlling the water adding system;
the storage unit, the calculation unit and the control unit mutually transmit information.
10. The process for preparing the pumpable pouring backfill solidified soil according to claim 9, characterized by comprising the following steps:
step 1: the preparation system is assembled on the ground, and a wet density target value of the undisturbed sludge, a wet density target value of the solidified soil, the weight of the undisturbed sludge conveyed by the weighing feeder each time, a liquid limit value of the undisturbed sludge and a relation between the water adding amount and the wet density of the undisturbed sludge are preset in a storage unit of the operation controller;
step 2: the control unit of the operation controller controls the weighing feeder to quantitatively convey the undisturbed sludge to the sludge decomposing machine every time, and meanwhile, wet density measurement at the bottom of the sludge decomposing machine measures the wet density of the undisturbed sludge input to the sludge decomposing machine and feeds measured data back to the calculation unit of the operation controller;
and 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 the undisturbed sludge, when the fed back data exceeds the preset target value, water needs to be added into the sludge disintegrating machine, otherwise, the water is not added, when the water needs to be added, the calculation unit calculates the water addition amount according to the relation between the water addition amount and the wet density of the undisturbed sludge and transmits the water addition amount to the control unit, the control unit controls the water adding system to add the calculated water amount into the sludge disintegrating machine according to the calculated water addition amount to adjust the wet density of the undisturbed sludge, meanwhile, the stirring device stirs the undisturbed sludge and the water to obtain adjusted sludge, and when the wet density of the adjusted sludge reaches the target value preset in the storage unit of the operation controller, the water adding is stopped;
and 4, step 4: after the water is added, the calculation unit of the operation controller compares the wet density of the adjusted sludge with the target wet density value of the solidified soil, and when the wet density of the adjusted sludge is smaller than the target wet density value of the solidified soil, the calculation unit of the operation controller calculates and analyzes the addition amount of the solidified material;
and 5: conveying the adjusted sludge in the sludge decomposing machine to a forced mixer through a first screw conveyor, adding a solidified material into a weighing hopper through a fourth screw conveyor by using a solidified material in a powder bin, dynamically weighing the weight of the added solidified material by using a first weighing sensor at the bottom of the weighing hopper, and transmitting a weighing result to a control unit of an arithmetic controller in real time;
step 6: starting the forced mixer, uniformly mixing the adjusted sludge and the solidified material by maintaining the preset mixing time to obtain adjusted solidified soil, comparing the wet density of the adjusted solidified soil with the target wet density value of the solidified soil, and if the wet density of the adjusted solidified soil is still smaller than the target wet density value of the solidified soil, continuously adding the solidified material into the forced mixer until the wet density of the adjusted solidified soil reaches the preset target value;
and 7: discharging the adjusted solidified soil with the wet density reaching a preset target value into a tailing filling pump from a discharge opening at the bottom of the forced mixer, and conveying the soil to a backfill yard through a conveying pipeline for pouring and backfilling.
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| CN115383893A (en) * | 2022-08-22 | 2022-11-25 | 上海建工建材科技集团股份有限公司 | Silica gel mold concrete mortar pouring auxiliary device and using method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115383893A (en) * | 2022-08-22 | 2022-11-25 | 上海建工建材科技集团股份有限公司 | Silica gel mold concrete mortar pouring auxiliary device and using method thereof |
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