CN112776182A - Complete equipment for preparing liquefied consolidated soil from waste residue soil and construction method thereof - Google Patents
Complete equipment for preparing liquefied consolidated soil from waste residue soil and construction method thereof Download PDFInfo
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- CN112776182A CN112776182A CN202110130963.3A CN202110130963A CN112776182A CN 112776182 A CN112776182 A CN 112776182A CN 202110130963 A CN202110130963 A CN 202110130963A CN 112776182 A CN112776182 A CN 112776182A
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- idler
- conveying device
- soil
- batching
- metering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C9/00—General arrangement or layout of plant
- B28C9/02—General arrangement or layout of plant for producing mixtures of clay or cement with other materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/0887—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing provided with sieves or filters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/02—Controlling the operation of the mixing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0422—Weighing predetermined amounts of ingredients, e.g. for consecutive delivery
- B28C7/0445—Weighing predetermined amounts of ingredients, e.g. for consecutive delivery using a weighing receptacle, the feeding thereof being automatically suspended after a predetermined weight has been obtained
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0481—Plant for proportioning, supplying or batching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/12—Supplying or proportioning liquid ingredients
- B28C7/126—Supply means, e.g. nozzles
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
本发明公开了一种废渣土制备液化固结土的成套设备及其施工方法，包括筛分装置、配料输送装置、物料储存装置、物料输送装置、搅拌装置、成品料暂存仓、泵送装置、成品料输送泵和控制装置，筛分装置的出料端连接配料输送装置的进料端，配料输送装置、泵送装置的出料端均连接搅拌装置的进料端，搅拌装置的出料端与成品料暂存仓进料口相连接，物料储存装置出料口连接物料输送装置进料口，物料输送装置出料口与配料输送装置相连，成品料输送泵通过管道与成品料暂存仓出料口相连接，筛分装置与配料输送装置径向偏移设置；总的，本发明具有使用方便、计量精确稳定、操作难度小、施工工期快、施工质量好的优点。
The invention discloses a complete set of equipment for preparing liquefied consolidated soil from waste residue and a construction method thereof, including a screening device, a batching conveying device, a material storage device, a material conveying device, a stirring device, a temporary storage bin for finished materials, and a pumping device , Finished material conveying pump and control device, the discharge end of the screening device is connected to the feed end of the batching conveying device, the discharging end of the batching conveying device and the pumping device are connected to the feeding end of the stirring device, and the discharging end of the stirring device The end is connected with the feed port of the temporary storage bin for finished materials, the material storage device discharge port is connected with the feed port of the material conveying device, the material conveying device discharge port is connected with the batching conveying device, and the finished material conveying pump is temporarily stored with the finished material through the pipeline. The silo discharge port is connected, and the screening device and the batching conveying device are arranged radially offset; in general, the invention has the advantages of convenient use, accurate and stable measurement, low operation difficulty, fast construction period and good construction quality.
Description
Technical Field
The invention relates to the technical field of preparation of consolidated soil, in particular to complete equipment for preparing liquefied consolidated soil from waste residue soil and a construction method thereof.
Background
In recent years, in the backfill construction process of various engineering foundation pits, fertilizer tanks, pipe culverts and tailing cavities, the problems of narrow backfill space of a foundation trench, large backfill section, large backfill depth, high quality requirement and inapplicable backfill machines are often encountered. In the current urban building construction, road base backfill engineering and building foundation reinforcement engineering, deep foundation pit supporting engineering is more and more, and accidents of water dispersion, pipeline, home entry roads and other parts of buildings are sunk and damaged due to the fact that backfill soil is not compact, and the use function is lost occur. Meanwhile, the backfill of the foundation trench is limited by factors such as backfill conditions, space and the like, and the backfill cannot be dense, so that the seismic performance of the high-rise building is damaged. The traditional backfilling process mostly adopts plain soil or lime soil to carry out construction by layers by using small tamping equipment, the construction difficulty is high, and the backfilling period is long. The quality of backfill is difficult to control, so most projects only need to backfill with plain concrete to ensure the backfill quality. The adoption of plain concrete for backfilling has high manufacturing cost and higher strength, and brings difficulty for later maintenance and secondary excavation. The liquefied concretion soil is mainly soil, cementing materials, water and the like are added into the soil to form large liquefied pumpable concretion materials through stirring, the domestic liquefied concretion soil is the whole station equipment for producing concrete or mortar at present, but the whole station equipment for preparing the concrete or the mortar of the liquefied soil is not suitable for the current backfill engineering working conditions of large, medium and small amount of square and dispersion, and leads to the repeated transportation of waste residue soil; therefore, in order to solve the above problems, a complete equipment for preparing liquefied consolidated soil from waste soil and a construction method thereof are needed.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the complete equipment for preparing the liquefied consolidated soil from the waste residue soil and the construction method thereof, which have the advantages of convenient use, accurate and stable measurement, small operation difficulty, quick construction period and good construction quality.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a complete set of equipment for preparing liquefied consolidated soil from waste residue soil comprises a screening device, a batching and conveying device, a material storage device, a material conveying device, a stirring device, a finished product material temporary storage bin, a pumping device, a finished product material conveying pump and a control device, the discharge end of the screening device is connected with the feed end of the batching and conveying device, the discharge ends of the batching and conveying device and the pumping device are both connected with the feed end of the stirring device, the discharge end of the stirring device is connected with the feed inlet of the finished product temporary storage bin, the discharge outlet of the material storage device is connected with the feed inlet of the material conveying device, the discharge hole of the material conveying device is connected with the batching conveying device, the finished material conveying pump is connected with the discharge hole of the finished material temporary storage bin through a pipeline, and the screening device is arranged in a radial offset mode relative to the batching conveying device; the screening device, the material conveying device, the batching conveying device, the stirring device, the finished product material conveying pump and the pumping device are all electrically connected with the control device.
The screening device comprises a screening rack and a drum screen, wherein a feed hopper is arranged at the upper end of the screening rack, a discharge port of the feed hopper is connected with a feeding device, and a discharge end of the feeding device is connected with a feed port of the drum screen; the discharge gate skew of feeder hopper sets up, realizes the screening plant for the radial skew setting of batching conveyor.
The drum sieve comprises a sieve body fixing frame, at least one arc-shaped sieve net, a rotating shaft, a bearing, a transmission mechanism and a driving device, wherein the arc-shaped sieve net is detachably connected with the sieve body fixing frame, the sieve body fixing frame is fixedly connected onto the rotating shaft, two ends of the rotating shaft are supported on the sieving rack through the bearing, one end of the transmission mechanism is fixedly connected onto the sieving rack, the driving device is connected with the driving device, the driving device is electrically connected with a control device, and the feeding device adopts a belt conveyor.
The material distribution and conveying device is a metering belt conveyor, the metering belt conveyor comprises a foldable frame, a metering carrier roller group and a belt, the metering carrier roller group is movably connected with the foldable frame and tightly attached to the lower surface of the upper portion of the belt, a discharge port of the material conveying device is located on one side of a weighing area where the metering carrier roller group is located, the foldable frame is divided into two sections, and the two sections are connected through a hinge.
The metering carrier roller group comprises a floating carrier roller and a first weighing sensor, connecting plates are respectively arranged at two ends of the floating carrier roller, one end of each connecting plate, far away from the floating carrier roller, is fixedly connected with a rotating shaft, and two ends of each rotating shaft are respectively in rotating connection with the foldable rack; the floating carrier roller is tightly attached to the lower surface of the upper portion of the belt, the first weighing sensor is fixedly connected with the foldable rack, the floating carrier roller is arranged on the surface of the first weighing sensor in a pressing mode, and the first weighing sensor is electrically connected with the control device.
The metering belt conveyor also comprises an upper carrier roller, and the upper carrier roller and the floating carrier roller have the same structure; the floating carrier roller comprises a carrier roller frame, side carrier roller supporting plates, a middle carrier roller supporting plate, side carrier rollers and middle carrier rollers, wherein the side carrier roller supporting plates and the middle carrier roller supporting plate are fixedly connected to two sides of the carrier roller frame respectively, the side carrier rollers are detachably connected with the side carrier roller supporting plates, the middle carrier rollers are detachably connected with the middle carrier roller supporting plate, and the side carrier rollers and the middle carrier rollers are arranged in a deviated mode.
But be close to in the folding chassis measurement bearing roller group department is connected with the bearing roller axle through the bearing, link firmly the bearing roller that tests the speed on the bearing roller axle, the cover is equipped with the encoder after bearing roller axle one end stretches out the bearing, the encoder links firmly in the folding chassis, the bearing roller that tests the speed is hugged closely the internal surface of belt.
The material storage device comprises a bottom frame, a second weighing sensor is fixedly connected to the bottom frame, a storage portion is fixedly connected to the upper end of the second weighing sensor and comprises a first storage portion and a second storage portion, the second storage portion is detachably connected to the upper end of the first storage portion, and after disassembly, the second storage portion can be sleeved with a cover after rotating 180 degrees and is arranged in the first storage portion, a discharge port of the first storage portion is connected with the material conveying device, the material conveying device adopts a spiral conveyer, and the second weighing sensor is electrically connected with a control device.
Pumping installations includes mounting bracket, water storage storehouse, water pump, water is electromagnetic flowmeter for the measurement, additive storage storehouse, additive for the measurement electromagnetic flowmeter and additive pump, water storage storehouse, additive storage storehouse all link firmly on the mounting bracket, be connected through the pipeline between water storage storehouse, water pump, the water is measured and is used the electromagnetic flowmeter, be connected through the pipeline between additive storage storehouse, additive pump, the additive is measured and is used the electromagnetic flowmeter, water pump, water are measured and are used the equal electric connection controlling means of electromagnetic flowmeter, additive pump, additive for the measurement electromagnetic flowmeter.
The stirring device is a double-horizontal-shaft vibration stirrer, and stirring blades of the double-horizontal-shaft vibration stirrer are spaced blades arranged in a spiral belt or spiral belt shape; the upper portion of double-horizontal-shaft vibration stirrer is provided with an upper cover, a first mud guard and a second mud guard, the batching conveying device stretches into the upper cover feed port, the first mud guard is located the batching conveying device stretches into the lower portion of the upper cover feed port part and is fixed on the double-horizontal-shaft vibration stirrer, and the batching conveying device stretches into the front portion of the upper cover feed port part is provided with the second mud guard.
A construction method of complete equipment for preparing liquefied consolidated soil from waste residue soil comprises the following steps:
firstly, sampling and detecting soil property parameters of the abandoned soil excavated in the construction site according to sampling standards, and designing aggregate mixing proportion according to the measured data and construction requirements;
secondly, starting equipment, and setting parameters such as aggregate mixing proportion, aggregate feeding sequence, feeding time, stirring time and the like on a control device;
thirdly, starting equipment, namely adding waste residue soil into a screening device by an excavator or a forklift, screening the waste residue soil by the screening device to remove super-particle-size residue soil, light matters in the soil and the like, conveying the screened waste residue soil with qualified particle size into a stirring device by a batching and conveying device, and stopping the batching and conveying device and the screening device simultaneously when the waste residue soil conveyed by the batching and conveying device reaches a set value of a control device; when the waste residue soil is conveyed, the material conveying device is started to convey the materials in the material storage device to the waste residue soil on the batching and conveying device, and the material conveying device stops when the materials conveyed by the material conveying device reach a preset value of the control device; the pumping device conveys the water and the liquid additive into the stirring device through a pipeline, and the pumping device stops when the water and the liquid additive reach preset values; after all the aggregates are added into the stirring device, stirring by the stirring device, and after the stirring time set by the control device is reached, whistling by a warning lamp, opening a discharge door of the stirring device, stopping whistling by the warning lamp at the same time, and enabling the finished liquefied consolidated soil to enter a finished product material temporary storage bin; and then repeating the processes, carrying out batching and stirring production by the equipment again, and simultaneously conveying the finished product material to a working surface by the finished product material conveying pump through a pipeline for backfilling and pouring or pumping to a concrete tank truck for conveying to a working site for working surface pouring.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention can be directly used in a construction site, realizes the automatic control of the whole preparation process through the control device, and has high intelligent degree of operation and easy operation; when the rapid-curing agent is used, the finished material can be directly prepared and rapidly used, so that the construction period is short; the materials are metered and the double-horizontal-shaft vibration stirrer is adopted, so that the forced stirring effect and the vibration effect are realized on the mixture, the materials are in a flutter state, the movement speed of the materials is accelerated, the effective collision frequency is increased, the diffusion speed of hydration products on the surfaces of the materials to a liquid phase is accelerated, the interface bonding strength is enhanced, the remarkable effects on improving the microstructure, enhancing the strength and the like are realized, the finished product materials are mixed more uniformly, the quality is better, and the construction quality is improved;
2. the screening device and the batching and conveying device are arranged in a radial offset manner, so that screened materials can fall at the center of the batching and conveying device, and the situation that the materials are accumulated to one side is avoided; the batching and conveying device adopts a metering belt conveyor, so that the belt can be effectively prevented from deviating, and the failure rate of equipment is reduced;
3. the arc-shaped screen mesh of the rotary screen is detachably connected with the screen body fixing frame, so that the replacement of the arc-shaped screen mesh and the cleaning of residues are facilitated, and the rotary screen is very convenient to use;
4. the metering carrier roller group comprises a floating carrier roller and a weighing sensor, wherein the floating carrier roller is fixedly connected with a rotating shaft through a connecting plate, two ends of the rotating shaft are rotatably connected with a foldable frame, and the floating carrier roller is contacted with the top of the weighing sensor, so that the situation that the floating carrier roller has uneven stress on the floating carrier roller and the weighing sensor due to deflection of one end in the weighing process can be avoided, and the metering accuracy and stability are ensured;
5. the side carrier roller and the middle carrier roller of the floating carrier roller are arranged in an offset manner and are not collinear, so that the overall height of the floating carrier roller can be effectively reduced, and the overall structure is more compact;
6. the speed measuring carrier roller is fixedly connected to the carrier roller shaft, the encoder is sleeved on the carrier roller shaft and is used together with the metering carrier roller group, and when the control device simultaneously detects encoder signals and weighing signals of the metering carrier roller group, the metering carrier roller group starts to meter, so that the metering accuracy and stability can be further ensured;
7. the material storage device comprises a first material storage part and a second material storage part, wherein the first material storage part and the second material storage part are detachably connected, and the second material storage part can be rotated 180 degrees and then is inversely inserted into the first material storage part after being detached, so that the material storage device is very convenient to use, and the transportation space and the transportation cost are greatly saved;
8. the discharge port of the material conveying device is connected with the batching conveying device, so that the premixing of powder and soil is realized, and the stirring efficiency and quality are improved; the discharge hole of the material conveying device is positioned on one side of the belt section where the metering carrier roller group is positioned, so that the influence on metering during discharging of the material output by the material conveying device is reduced, and the metering is more stable and accurate;
9. the construction method overcomes the defect that the traditional mode is not compact in layered backfilling, refines raw materials and improves the property of aggregate; the materials are mixed in advance, so that the production efficiency is improved; the soil particles and the multi-scale microparticles of the curing agent form a continuous interlocking structure in a liquefied state by adopting vibration stirring and utilizing directional vibration energy, so that sufficient homogenization is ensured, the water consumption is effectively reduced by cooperating with the functional components of the curing agent, and the materials are mixed more uniformly; meanwhile, the construction method of the invention is convenient for on-site preparation and on-site construction, and has short construction period and good construction quality;
10. the liquefied consolidation soil prepared by the invention has the characteristics of self-compaction and no vibration, does not need a compaction process, has adjustable strength, and is particularly suitable for filling narrow spaces such as pipe gallery foundation grooves, deep foundation pits of buildings, municipal pipelines, traffic engineering table backs and the like; the invention not only makes full use of the waste residue soil and the engineering slurry, but also has the advantages of better uniformity of the consolidated soil, reduced water consumption, obviously improved strength and volume stability, low permeability, corrosion resistance and the like under the condition of the same material cost, and can prepare the light self-hydrophobic consolidated soil material according to the engineering requirement; generally, the invention has the advantages of convenient use, accurate and stable measurement, small operation difficulty, quick construction period and good construction quality.
Drawings
FIGS. 1 and 2 are schematic views of the general structure of the present invention;
FIG. 3 is a schematic diagram of the construction of the screening device of the present invention;
FIG. 4 is a schematic view of the offset feed hopper configuration of the present invention;
FIG. 5 is a schematic structural view of a trommel according to the present invention;
FIG. 6 is a schematic view of the dispensing transport device of the present invention;
FIG. 7 is a schematic view of a weighing area of the present invention;
FIG. 8 is a schematic diagram of the construction of the metering idler set of the present invention;
fig. 9 is a schematic structural view of the floating idler of the present invention;
fig. 10 is a schematic structural view of a tachometer idler and an encoder in accordance with the present invention;
FIG. 11 is a schematic structural view of a material storage device and a material conveying device according to the present invention;
FIG. 12 is a schematic view of the second stock storing part after being inserted upside down according to the present invention;
FIG. 13 is a schematic view of the installation of the first and second fenders of the present invention;
FIG. 14 is a flow chart of a construction method of the present invention;
in the figure: 1. a screening device; 11. a screening frame; 12. a drum screen; 121. a screen body fixing frame; 122. an arc-shaped screen; 123. a rotating shaft; 124. a bearing; 125. a transmission mechanism; 126. a drive device; 127. a drum screen; 13. a feed hopper; 14. a feeding device; 2. a batching and conveying device; 21. a foldable frame; 22. a belt; 23. a metering carrier roller set; 231. a floating carrier roller; 2311. a carrier roller frame; 2312. a side idler support plate; 2313. a middle carrier roller supporting plate; 2314. side supporting rollers; 2315. a middle carrier roller; 232. a weighing sensor; 233. a connecting plate; 234 a rotating shaft; 24, an upper supporting roller; 25, carrying roller shaft; 26 speed measuring carrier rollers; 27 an encoder; 3. a material storage device; 31. a chassis; 32. a material weighing sensor; 33. a material storage part; 331. a first material storage part; 332. a second material storage section; 4. a material conveying device; 5. a stirring device; 51. an upper cover; 52. a first fender; 53. a second mudguard; 6. temporarily storing finished product materials in a bin; 7. a pumping device; 8. a finished product material delivery pump; 9. and a control device.
Detailed Description
The following detailed description of the preferred embodiments will be made with reference to the accompanying drawings.
Example 1:
as shown in fig. 1 or fig. 2, in order to achieve the above purpose, the technical solution adopted by the present invention is as follows: a complete set of equipment for preparing liquefied consolidated soil from waste residue soil comprises a screening device 1, a batching and conveying device 2, a material storage device 3, a material conveying device 4, a stirring device 5, a finished material temporary storage bin 6, a pumping device 7, a finished material conveying pump 8 and a control device 9, wherein the screening device 1 is a rotary screening device, the discharge end of the screening device 1 is connected with the feed end of the batching and conveying device 2, the discharge ends of the batching and conveying device 2 and the pumping device 7 are both connected with the feed end of the stirring device 5, the discharge end of the stirring device 5 is connected with the feed inlet of the finished material temporary storage bin 6, the discharge outlet of the material storage device 3 is connected with the feed inlet of the material conveying device 4, the discharge outlet of the material conveying device 4 is connected with the batching and conveying device 2, and the finished material conveying pump 8 is connected with the discharge outlet of the; the screening device 1 and the batching conveying device 2 are arranged in a radial offset mode, and the screening device 1 and the batching conveying device 2 can be arranged in a radial offset mode by offsetting for a certain distance during installation, so that screened materials are guaranteed to fall in the center of the batching conveying device 2, the situation that the materials are accumulated on one side is avoided, and the equipment failure rate is reduced; the screening device 1, the batching and conveying device 2, the material conveying device 4, the stirring device 5, the pumping device 7 and the finished product material conveying pump 8 are all electrically connected with the control device 9; for the construction working condition that the finished product material delivery pump 8 can pump the construction working face within the range and the pumping pipeline is laid without obstacles, the finished product material delivery pump 8 is adopted to directly pump the liquefied consolidated soil to the construction working face through a pipeline, or the liquefied consolidated soil is pumped to the construction working face by adopting a pipeline and a chute; for other working conditions, the pouring of the working surface can be carried out by adopting a finished product material delivery pump 8+ a concrete tank car or a finished product material delivery pump 8+ a concrete tank car + a chute.
As shown in fig. 3 and 4, the screening device 1 comprises a screening rack 11 and a drum screen 12, wherein a feed hopper 13 is arranged at the upper end of the screening rack 11, a discharge port of the feed hopper 13 is connected with a feeding device 14, and a discharge end of the feeding device 14 is connected with a feed port of the drum screen 12; the discharge port of the feed hopper 13 is arranged in an offset manner relative to the center line of the feed hopper in the direction of the feeding device 14, so that the radial offset arrangement of the screening device 1 and the ingredient conveying device 2 is realized, at the moment, the material discharged from the discharge port of the feed hopper 13 is offset by a certain distance relative to the feeding device 14 and the rotary screen 12, and when the rotary screen 12 rotates to discharge, the discharging rotation direction of the rotary screen 12 can ensure that the screened material falls on the center of the ingredient conveying device 2 according to actual requirements; the batching and conveying device 2 is a metering belt conveyor, so that the deviation of the belt 22 can be effectively prevented, and the failure rate of equipment is reduced.
As shown in fig. 5, the trommel 12 includes a screen body fixing frame 121, at least one sieve bend 122, a rotating shaft 123, a bearing 124, a transmission mechanism 125 and a driving device 126, the sieve bend 122 is detachably connected with the screen body fixing frame 121, the screen body fixing frame 121 is fixedly connected on the rotating shaft 123, two ends of the rotating shaft 123 are supported on the sieving rack 11 through the bearing 124, and one end of the rotating shaft is connected with the driving device 126 fixedly connected on the sieving rack 11 through the transmission mechanism 125, the driving device 126 is driven by a motor, the driving device 126 is electrically connected with the control device 9, the feeding device 14 adopts a belt conveyor, the transmission mechanism 125 adopts chain transmission, the sieve bend 122 can be detached from the screen body fixing frame 121, so that maintenance and replacement are convenient, and meanwhile, sundries remaining on the sieve bend 122 are convenient to.
As shown in fig. 6 and 7, the ingredient conveying device 2 is a metering belt conveyor, the metering belt conveyor includes a foldable frame 21, a belt 22 and a metering idler group 23, the metering idler group 23 is movably connected with the foldable frame 21 and tightly attached to the lower surface of the upper part of the belt 22, the upper part of the belt of the metering belt conveyor is supported by upper idlers 24 and is divided into a plurality of belt sections by two adjacent upper idlers 24, a discharge port of the material conveying device 4 is located at one side of the belt section where the metering idler group 23 is located, the belt section between the two upper idlers 24 where the metering idler group 23 is located is a weighing area, that is, the discharge port of the material conveying device 4 cannot be located in the weighing area where the metering idler group 23 is located, so as to reduce influence on metering when the material output by the material conveying device 4 is discharged; the foldable frame 21 is divided into two sections, and the two sections are connected through a hinge, so that the foldable function is realized, and the transportation of the metering belt conveyor is facilitated.
As shown in fig. 8, the metering roller group 23 includes a floating roller 231 and a first weighing sensor 232, two ends of the floating roller 231 are respectively provided with a connecting plate 233, one end of the connecting plate 233 far away from the floating roller 231 is fixedly connected with a rotating shaft 234, and two ends of the rotating shaft 234 are respectively rotatably connected with the foldable frame 21; the floating carrier roller 231 is tightly attached to the lower surface of the upper portion of the belt 22, the first weighing sensor 232 is fixedly connected with the foldable frame 21, the floating carrier roller 231 is pressed on the upper surface of the first weighing sensor 232, and the first weighing sensor 232 is electrically connected with the control device.
As shown in fig. 9, the metering belt conveyor further includes an upper idler 24, the upper idler 24 and the floating idler 231 being of the same construction; the floating carrier rollers 231 are groove-shaped carrier roller groups and comprise carrier roller frames 2311, side carrier roller supporting plates 2312, middle carrier roller supporting plates 2313, side carrier rollers 2314 and middle carrier rollers 2315, the side carrier roller supporting plates 2312 and the middle carrier roller supporting plates 2313 are fixedly connected to two sides of the carrier roller frames 2311 respectively, the side carrier rollers 2314 are detachably connected with the side carrier roller supporting plates 2312, and the middle carrier rollers 2315 are detachably connected with the middle carrier roller supporting plates 2313; the side carrier roller 2314 and the middle carrier roller 2315 are arranged in an offset mode and are not collinear, the overall height of the floating carrier roller 231 can be effectively reduced, and the structure is more compact.
As shown in fig. 10, a position, close to the metering carrier roller group 23, of the foldable frame 21 is connected with a carrier roller shaft 25 through a bearing, the carrier roller shaft 25 is fixedly connected with a speed measuring carrier roller 26, one end of the carrier roller shaft 25 extends out of the bearing and then is sleeved with an encoder 27, the encoder 27 is fixedly connected to the foldable frame 21, the speed measuring carrier roller 26 is tightly attached to the inner surface of the belt 22, the encoder 27 is matched with the metering carrier roller group 23 for use, when the control device 9 simultaneously detects a signal of the encoder 27 and a weighing signal of a first weighing sensor 232 in the metering carrier roller group 23, the metering carrier roller group 23 measures, namely, the metering is carried out during the work of the metering belt conveyor, the first weighing sensor 232 is prevented from being interfered to measure when the metering belt conveyor does.
As shown in fig. 11 and 12, the material storage device 3 includes a bottom frame 31, a second weighing sensor 32 is fixedly connected to the bottom frame 31, a material storage portion 33 is fixedly connected to the upper end of the second weighing sensor 32, the material storage portion 33 includes a first material storage portion 331 and a second material storage portion 332, the second material storage portion 332 is detachably connected to the upper end of the first material storage portion 331, the second material storage portion 332 is connected to the first material storage portion 331 through bolts, the detached second material storage portion 332 can be sleeved in the first material storage portion 331 after rotating 180 degrees, a discharge port of the first material storage portion 331 is connected to the material conveying device 4, the material conveying device 4 adopts a screw conveyor, and the second weighing sensor 32 is electrically connected to a control device to measure the material of the material storage device 3; the second storage part 332 can be rotated by 180 degrees and then inserted into the first storage part 331 after being disassembled, so that the transportation space and the transportation cost are greatly saved, and the second storage part 332 can be used as the storage space during transportation, and is very convenient.
The pumping device 7 comprises a mounting rack, a water storage bin, a water pump, an electromagnetic flowmeter for water metering, an additive storage bin, an electromagnetic flowmeter for additive metering and an additive pump, wherein the water storage bin and the additive storage bin are fixedly connected to the mounting rack; when the additive and the water are added, the water and the additive can be respectively pumped into the stirring device 5 by a water pump and an additive pump, and the water and the additive can also be pumped into the same pipeline by the water pump and the additive pump to be premixed and then enter the stirring device 5.
As shown in fig. 13, the stirring device 5 is a double horizontal shaft vibration stirrer, and the stirring blades of the double horizontal shaft vibration stirrer are spaced blades arranged in a spiral belt or spiral belt shape, so that the stirring device is more suitable for stirring liquefied consolidated soil and has higher stirring efficiency; the double-horizontal-shaft vibration stirrer is adopted, so that the forced stirring effect and the vibration effect are realized on the mixture, each material is in a flutter state, the movement speed of each material is accelerated, the effective collision frequency is increased, the diffusion speed of hydration products on the surface of each material to a liquid phase is accelerated, the aggregate surface is purified, the interface bonding strength is enhanced, the remarkable effects on the improvement of a microstructure, the enhancement of strength and the like are realized, the stirred material can be more uniform, the consolidation effect is better, and the quality of finished products is better; upper portion of double-horizontal-shaft vibration mixer is equipped with upper cover 51, first fender 52, second fender 53, batching conveyor 2 stretches into in the upper cover 51 feed inlet, the anterior of batching conveyor 2 stretching into upper cover 51 feed inlet part is equipped with first fender 52, second fender 53 is located the lower part that batching conveyor 2 stretches into upper cover 51 feed inlet part and is fixed in on the double-horizontal-shaft vibration mixer, the first fender 52 and the second fender 53 that set up can effectively avoid 5 during operations of agitating unit to spatter the stirring material on batching conveyor 2, reduce the influence to batching conveyor 2.
As shown in fig. 14, a construction method of a complete set of equipment for preparing liquefied consolidated soil from waste soil comprises the following steps:
firstly, sampling and detecting soil property parameters of the abandoned soil excavated in the construction site according to sampling standards, and designing aggregate mixing proportion according to the measured data and construction requirements;
secondly, starting equipment, and setting parameters such as aggregate mixing proportion, aggregate feeding sequence, feeding time, stirring time and the like on a control device;
thirdly, driving power sources of the whole set of equipment are sequentially started according to a set sequence, an excavator or a forklift is used for adding waste residue soil into a feed hopper 13 of a screening device 1, the waste residue soil reaches a feeding device 14 through a feed opening of the feed hopper 13, the feeding device 14 is used for conveying the waste residue soil into a drum screen 12 for screening, removing light matters and the like in the waste residue soil with ultra-particle size, the waste residue soil with qualified particle size after screening is conveyed into a double-horizontal-shaft vibration stirrer after being measured by a measuring carrier roller group 23 on a measuring belt conveyor, meanwhile, a material conveying device 4 is started for conveying a powder curing agent in a material storage device 3 to the waste residue soil on an annular conveying belt of the measuring belt conveyor, the powder curing agent is uniformly paved and premixed on the waste residue soil along with the movement of the annular conveying belt, a pumping device 7 is used for conveying water and liquid additives into the double-horizontal-shaft vibration stirrer after being measured, when the weighing sensors 232 on the metering carrier roller group 23 are accumulated and metered to a set value of the control device 9, the metering belt conveyor and the feeding device 14 are stopped simultaneously, the material conveying device 4 is stopped after the material weighing sensors 32 on the material storage device 3 are reduced and metered to a preset value of the control device 9, and the pumping device 7 is stopped when electromagnetic flow meters in the water and liquid additive device reach the preset values; after each aggregate is added into the double-horizontal-shaft vibration stirrer, the double-horizontal-shaft vibration stirrer stirs, after the stirring time set by the control device 9 is reached, the warning lamp whistles, the discharge door of the double-horizontal-shaft vibration stirrer is opened, the warning lamp whistles are stopped at the same time, and the finished product liquefied consolidated soil enters the finished product temporary storage bin 6; and then repeating the processes, carrying out batching and stirring production again by the equipment, simultaneously conveying the finished product material to a working surface through a pipeline by the finished product material conveying pump 8 for backfilling pouring or pumping to a concrete tank truck for conveying to a working place for pouring of the working surface, wherein the effective pumping time of the finished product material conveying pump 8 is less than the sum of the batching and stirring production time of the liquefied consolidated soil raw material in the equipment.
The extension degree of the liquefied consolidation soil poured on the working face is controlled to be 160-350mm, when the narrow working face is poured and backfilled, symmetrical layered pouring is carried out according to the lateral pressure of the bearing side of the building, and pouring can be continued again after the solidification strength of the liquefied consolidation soil reaches the secondary pouring standard. When the backfilling working face is wide, the layered pouring thickness is more than or equal to 200mm, after the last layer of the working face is poured no matter what kind of working face, when the surface of the liquefied consolidation soil is anhydrous, a plastic film is adopted for covering and maintaining, cracks are prevented, and other subsequent constructions can be carried out after the formed strength is reached.
In a certain backfilling project, the excavated spoil of the pipe gallery is placed on one side of a foundation pit of the pipe gallery, the backfilling depth of the pipe gallery is about 16m, the width of a left working surface and a right working surface is about 1.7-1.9m, the unconfined compressive strength of 7d is not less than 0.6MPa, the unconfined compressive strength of 28d is not less than 0.8MPa, the layered pouring depth is 1m, and 50-100m of partition is adopted, and the extension degree of the liquefied consolidation soil which is transported to a construction surface for pouring is kept at 280 +/-20 mm. Firstly, sampling and detecting excavation waste soil, and designing the mixing proportion of original soil, a curing agent A, a curing agent B, water and a liquid curing agent by taking the quality of the original soil as a reference according to a detection result and engineering construction requirements; the device and the construction method are adopted for preparation, the pouring is carried out for 12 hours after pouring, the manual standing on the solidified liquefied consolidated soil without foot prints is taken as the pouring standard again, and the quality of the thin film is subjected to sampling inspection for 1 time every 1000m, wherein a group of data is shown in the following table:
as can be seen from the data in the table, the engineering design requirements are all met.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
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| CN113418738A (en) * | 2021-07-22 | 2021-09-21 | 海南大学 | Sampling device for calcareous sand test |
| CN114133166A (en) * | 2021-10-13 | 2022-03-04 | 上海志昌建设工程有限公司 | Large-scale resource utilization method for engineering muck |
| CN114311310A (en) * | 2021-12-27 | 2022-04-12 | 众智机械(临沂)有限公司 | Municipal construction is with consolidating native agitator tank |
| CN114603707A (en) * | 2021-12-16 | 2022-06-10 | 中国建筑一局(集团)有限公司 | Building solid waste mixed cement soil on-site stirring system and preparation method |
| CN115026946A (en) * | 2022-06-17 | 2022-09-09 | 中建三局四川建筑装备有限公司 | Fast solidified soil metering and blanking production line for high-water-content cohesive soil material |
| CN119057940A (en) * | 2024-10-11 | 2024-12-03 | 中建八局天津建设工程有限公司 | A fully automatic premixed liquid solidified soil continuous screening, mixing and pumping integrated equipment |
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| CN119057940A (en) * | 2024-10-11 | 2024-12-03 | 中建八局天津建设工程有限公司 | A fully automatic premixed liquid solidified soil continuous screening, mixing and pumping integrated equipment |
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| CN112776182B (en) | 2025-01-17 |
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