CN114907039B - Device for spraying slurry and reducing slurry rebound of magnetic concrete and construction method - Google Patents
Device for spraying slurry and reducing slurry rebound of magnetic concrete and construction method Download PDFInfo
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- 239000002002 slurry Substances 0.000 title claims abstract description 148
- 239000004567 concrete Substances 0.000 title claims abstract description 116
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 68
- 238000005507 spraying Methods 0.000 title claims abstract description 62
- 238000010276 construction Methods 0.000 title claims abstract description 24
- 239000007921 spray Substances 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 37
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 34
- 238000003756 stirring Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000002699 waste material Substances 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 28
- 239000000843 powder Substances 0.000 claims description 24
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 21
- 239000011707 mineral Substances 0.000 claims description 21
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 239000010811 mineral waste Substances 0.000 claims description 12
- 239000004570 mortar (masonry) Substances 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 10
- 239000004568 cement Substances 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000654 additive Substances 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 claims description 4
- 230000000996 additive effect Effects 0.000 claims description 3
- 239000002518 antifoaming agent Substances 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000013530 defoamer Substances 0.000 claims description 3
- 230000002262 irrigation Effects 0.000 claims description 3
- 238000003973 irrigation Methods 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 239000002893 slag Substances 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000000696 magnetic material Substances 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
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- 230000003670 easy-to-clean Effects 0.000 description 1
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- 230000005484 gravity Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/12—Waste materials; Refuse from quarries, mining or the like
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
- C04B2111/00155—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00422—Magnetic properties
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention provides a device for spraying slurry and reducing the rebound of the slurry by magnetic concrete and a construction method, comprising a concrete sprayer, a slurry stirring tank, a hopper, a stirrer, a range-extending slurry conveying pipe and a strong electromagnetic spray head; wherein, the upper part of the concrete sprayer is provided with a speed reducer, and a transmission device is arranged above the speed reducer; the power system consists of a motor and an oil-water separator; the strong electromagnetic spray head consists of a strong electromagnetic device and a spray head, and the metering device consists of a metering pump; by utilizing ferromagnetic substances in waste slag, the magnetic materials are magnetized through the strong electromagnetic spray head, and the magnetic concrete slurry in the construction process effectively reduces the rebound of the slurry and improves the early strength of the concrete simultaneously through the magnetic force action between the magnetic concrete slurry and the strong electromagnetic spray head. The method can effectively solve the problems that the concrete setting time and pumpability cannot be dynamically controlled in real time, and parameters such as the pumpability, the fluidity, the setting time and the like of the concrete slurry cannot efficiently meet the construction process requirements.
Description
Technical Field
The invention relates to the field of concrete materials and anchor spraying support engineering, in particular to an automatic control system and method based on denitrification of sulfur autotroph.
Background
In the prior art, concrete materials are prepared by mixing cement, sand, stones and water according to a certain proportion, conventional pumping concrete is usually conveyed to a construction site by a concrete mixer truck after a finished product is prepared and mixed at a concrete mixing plant, and the concrete setting time and pumpability cannot be dynamically controlled in real time, so that the concrete must be conveyed to the construction site before initial setting, and when the concrete is sprayed, the pumpability, fluidity, setting time and other factors of concrete slurry can cause the waste of the concrete materials and pollute the air. Therefore, improving existing concrete materials and construction processes is an urgent need in the art for a solution.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a device for spraying slurry and reducing the rebound of the slurry and a construction method, which can solve the problems that in the prior art, the concrete setting time and pumpability cannot be dynamically controlled in real time, so that parameters such as the pumpability, the fluidity, the setting time and the like of the concrete slurry cannot efficiently meet the requirements of a construction process, and particularly the control of the rebound of the slurry spraying is carried out, so that the waste of concrete materials is further reduced and air is polluted.
In order to achieve the technical characteristics, the aim of the invention is realized in the following way: the magnetic concrete spraying slurry is characterized in that ferromagnetic mineral waste residues are added into the magnetic concrete spraying slurry to serve as raw materials, a ball mill is used for grinding the ferromagnetic mineral waste residues into ferromagnetic mineral waste residue powder, a strong magnetic electromagnet is used for screening the ferromagnetic mineral waste residue powder, after ferromagnetic mineral powder containing ferromagnetic substances is adsorbed, the ferromagnetic mineral powder is added into the concrete spraying slurry material according to a certain proportion, and then a magnetization material is provided for the concrete spraying slurry material.
The magnetic concrete spraying slurry comprises cement, water, ferromagnetic mineral powder, an iron powder dispersing agent, a water reducing agent, an accelerator, a flocculant and a defoaming agent; wherein the volume ratio of the water to the ash is 0.3-0.5; the residual additive content accounts for the volume content of the cement paste as follows: 3-5% of flocculant, 0.8-1.2% of water reducer, 0.1-0.3% of defoamer, 30-55% of ferromagnetic mineral powder, 1.3-1.6% of iron powder dispersant and 2-3% of accelerator.
The accelerator is alkali-free liquid accelerator, so that the early strength of concrete is improved, and the impermeability is improved.
The spraying device for spraying the magnetic concrete spraying slurry and reducing the rebound of the slurry comprises a concrete sprayer, wherein a slurry stirring tank is arranged on the top support of the concrete sprayer, a stirrer is rotatably arranged in the slurry stirring tank, a hopper for adding raw materials is arranged on the side edge of the slurry stirring tank, a range-extending slurry conveying pipe is connected to the slurry stirring tank, and a strong electromagnetic spray head is arranged at the tail end of the range-extending slurry conveying pipe; the extended-range slurry conveying pipe is connected with a power system for providing power.
The top of the slurry stirring tank is provided with a water reducer adding device for adding a water reducer, the water reducer adding device is connected with a control console, and the flow rate of the water reducer can be regulated by regulating the water reducer adding device in real time on the control console, so that the fluidity and pumpability parameters of the concrete injection slurry are controlled;
after the magnetic concrete spraying slurry is prepared, a certain amount of water reducer is added according to the transportation time and engineering requirements to prevent the slurry from solidifying and hardening, meanwhile, the tank truck is prevented from being stirred in a large amount during transportation, the transportation cost is saved, and the service life of the tank truck is prolonged.
The stirrer material cavity adopts anti-adhesion high-elasticity rubber as a lining plate and adopts wear-resistant rubber material as a bonding plate.
The power system comprises a motor and an oil-water separator;
the middle position of the extended-range slurry conveying pipe is provided with an accelerator adding device, the accelerator adding device consists of a tank body and an accelerator metering pump, a rotary push rod is arranged in the accelerator adding device, and the accelerator and the slurry are stirred, and meanwhile, the flow speed of the mortar is increased, and the blockage in the pipe is reduced.
The strong electromagnetic spray head is supported at the top of the concrete sprayer through the spherical hinge, and the direction of the strong electromagnetic spray head can be rotated within the range of 360 degrees according to the construction requirement, so that multidirectional mortar spray irrigation is performed.
The strong electromagnetic spray head consists of a strong electromagnetic device and a spray head, wherein the strong electromagnetic device is used as a voltage converter through a large capacitor, enameled wires with certain thickness are wound on the strong electromagnetic spray head, a contactor is also arranged for switching and a direct current power supply with a current limiting function, the strong electromagnetic spray head can magnetize ferromagnetic mineral powder in the magnetic concrete slurry, and the magnetic interaction traction among ferromagnetic mineral powder particles in the magnetic concrete sprayed slurry material is utilized to reduce the rebound of the slurry;
the nozzle is connected with the extended-range type slurry conveying pipe joint through threads, the front end of the nozzle is provided with a flow converter, and the purpose of switching output flow is achieved by rotating the flow converter according to different angles and different types of slopes.
The method for performing magnetic concrete slurry spraying construction by adopting the spraying device comprises the following steps of:
step one: firstly, preparing magnetic concrete spraying slurry by taking ore waste as a raw material according to engineering requirements according to a set proportion;
step two: the prepared magnetic concrete injection slurry is transported by adopting a pumping transport vehicle, and in the transportation process, the flow rate and the flow rate of the water reducer are regulated by regulating the water reducer adding device in real time on a control console according to the transportation time and the related construction process requirements, so that the fluidity and the pumpability related parameters of the concrete slurry are controlled;
step three: when the pumping transport vehicle arrives at a construction site, checking whether the fluidity and pumpability parameters of the magnetic concrete in the slurry stirring tank meet the requirements of the sprayed concrete, and starting the power system to work after checking without errors, wherein the slurry is transported in a flowing way through a prolonged-span slurry transport pipe;
step four: the magnetic concrete spraying slurry flows through the accelerator adding device to add accelerator into the pipe, the rotating push rod is used for stirring the accelerator and the slurry, the flowing speed of the slurry is increased, the blockage in the pipe is reduced, and the adding dosage of the accelerator depends on the slurry conveying speed, the slurry flow and related technological parameters;
step five: under the action of a strong magnetic field of the strong electromagnetic spray head, the magnetic concrete slurry is magnetized by the strong electromagnetic spray head, so that ferromagnetic minerals in the magnetic concrete slurry have certain magnetism; setting the spray head to a certain flow and meeting the requirement of spray parameters;
step six: and controlling the spraying direction of the concrete through the spherical hinge to perform operation.
The invention has the following beneficial effects:
1. compared with common concrete, the magnetic concrete spraying slurry greatly improves the solidification speed of the concrete, reduces the concrete which slides downwards due to the action of gravity, greatly improves the early strength and impermeability of the concrete, greatly reduces the rebound quantity and dust of the concrete in the spraying process, and reduces the air pollution caused by the rebound quantity and dust.
2. Compared with common concrete, the fluidity and pumpability of the concrete are enhanced by dynamically adding additives such as a water reducing agent and the like in real time, the stirring rate of the mortar tank truck in the transportation process is reduced, the fuel is saved, and the service life of the mortar tank truck is prolonged.
3. The magnetic concrete injection slurry mainly uses industrial waste slag as a raw material, realizes the reutilization of wastes, and saves the economic cost.
4. According to the invention, the strong electromagnetic spray head is connected with the vehicle body through the spherical hinge, so that the flexibility of the spray head is greatly improved, and mortar can be sprayed in multiple directions and multiple angles according to operation requirements.
5. The rotating push rod arranged in the extended-range slurry conveying pipe can greatly reduce the blocking of the mortar and increase the conveying speed of the mortar.
6. The stirrer material cavity adopts anti-adhesion high-elasticity rubber as a lining plate and adopts wear-resistant rubber material as a bonding plate. The sealing and air compressing device is convenient to clean, has certain toughness, good abrasion resistance, sealed air compression and reduced dust concentration.
7. The middle position of the extended-range slurry conveying pipe is provided with an accelerator adding device, the accelerator adding device consists of a tank body and an accelerator metering pump, and a rotary push rod is arranged in the accelerator adding device, so that the flow speed of the slurry can be increased while the accelerator and the slurry are stirred, and the slurry is less blocked; meanwhile, the dripping rate of the accelerator can be regulated according to engineering requirements, so that the effect of controlling the concrete setting time in real time is achieved.
Drawings
The invention is further described below with reference to the drawings and examples.
Fig. 1 is a front view of a strong electromagnetic spray head of the present invention.
Fig. 2 is a side view of the strong electromagnetic spray head of the present invention.
Fig. 3 is an overall configuration diagram of the injection device of the present invention.
In the figure: the concrete sprayer 1, the water reducer adding device 2, the strong electromagnetic device 3, the accelerator metering pump 4, the motor 5, the oil-water separator 6, the slurry stirring tank 7, the extended range slurry conveying pipe 8, the hopper 9, the stirrer 10, the strong electromagnetic spray head 11, the spray head 12 and the spherical hinge 13.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1:
referring to fig. 1-3, a magnetic concrete spraying slurry is provided, wherein ferromagnetic mineral waste residues are added into the magnetic concrete spraying slurry to serve as raw materials, a ball mill is used for grinding the ferromagnetic mineral waste residues into ferromagnetic mineral waste residue powder, a strong magnetic electromagnet is used for screening the ferromagnetic mineral waste residue powder, after ferromagnetic mineral powder containing ferromagnetic substances is adsorbed, the ferromagnetic mineral powder is added into the concrete spraying slurry material according to a certain proportion, and then a magnetization material is provided for the concrete spraying slurry material. By adopting the magnetic concrete injection slurry, not only can waste be utilized, but also magnetized materials are provided for the magnetized slurry, and the material cost is saved.
Further, the magnetic concrete spraying slurry comprises cement, water, ferromagnetic mineral powder, an iron powder dispersing agent, a water reducing agent, an accelerator, a flocculating agent and a defoaming agent; wherein the volume ratio of the water to the ash is 0.3-0.5; the residual additive content accounts for the volume content of the cement paste as follows: 3-5% of flocculant, 0.8-1.2% of water reducer, 0.1-0.3% of defoamer, 30-55% of ferromagnetic mineral powder, 1.3-1.6% of iron powder dispersant and 2-3% of accelerator. Through adopting foretell cooperation proportion, guaranteed the performance of best magnetic concrete injection thick liquid, in addition concrete work progress, can adjust the ratio of magnetic concrete injection thick liquid according to the construction requirement.
Furthermore, the accelerator is alkali-free liquid accelerator, so that the early strength of concrete is improved, and the impermeability is improved. Simple operation, and reduced dust and rebound.
Example 2:
the spraying device for spraying the magnetic concrete spraying slurry and reducing the rebound of the slurry comprises a concrete sprayer 1, wherein a slurry stirring tank 7 is arranged on the top support of the concrete sprayer 1, a stirrer 10 is rotatably arranged in the slurry stirring tank 7, a hopper 9 for adding raw materials is arranged on the side edge of the slurry stirring tank 7, a range-extending type slurry conveying pipe 8 is connected to the slurry stirring tank 7, and a strong electromagnetic spray head 11 is arranged at the tail end of the range-extending type slurry conveying pipe 8; the extended reach slurry delivery pipe 8 is connected to a power system for providing power. By adopting the spraying device, the special spraying device can be used for spraying the magnetic concrete slurry, so that the strong electromagnetic valve spray head can magnetize the ferromagnetic material in the magnetic concrete slurry in the spraying process, and the magnetic force interaction traction effect among the magnetic particles in the magnetic concrete slurry is utilized to reduce the slurry rebound.
Further, a water reducer adding device 2 for adding a water reducer is arranged at the top of the slurry stirring tank 7, the water reducer adding device 2 is connected with a control console, and the flow rate of the water reducer can be regulated by regulating the water reducer adding device 2 in real time on the control console, so that the fluidity and pumpability parameters of the concrete injection slurry are controlled; after the magnetic concrete spraying slurry is prepared, a certain amount of water reducer is added according to the transportation time and engineering requirements to prevent the slurry from solidifying and hardening, meanwhile, the tank truck is prevented from being stirred in a large amount during transportation, the transportation cost is saved, and the service life of the tank truck is prolonged.
Furthermore, the material cavity of the stirrer 10 adopts anti-adhesion high-elasticity rubber as a lining plate and adopts wear-resistant rubber material as a bonding plate. The advantages are that it is easy to clean and has certain toughness, the abrasion resistance is good, the sealing compressed air is adopted, and the dust concentration is reduced.
Further, the power system comprises an electric motor 5 and an oil-water separator 6; the middle position of the extended-range slurry conveying pipe 8 is provided with an accelerator adding device, the accelerator adding device consists of a tank body and an accelerator metering pump 4, a rotary push rod is arranged in the accelerator adding device, and the flow speed of mortar is accelerated while the accelerator and the slurry are stirred, so that the blockage in the pipe is reduced. The power system can be used for providing power in the injection construction process. The addition and supply of the accelerator are controlled by an accelerator metering pump 4.
Further, the strong electromagnetic spray head 11 is supported at the top of the concrete sprayer 1 through the spherical hinge 13, and the direction of the strong electromagnetic spray head 11 can be rotated within the range of 360 degrees according to the construction requirement, so that multidirectional mortar spray irrigation is performed. The direction of the strong electromagnetic spray head 11 can be conveniently adjusted by adopting the spherical hinge 13, so that the spray angle and the spray direction are changed.
Further, the strong electromagnetic spray head 11 is composed of a strong electromagnetic device 3 and a spray head 12, the strong electromagnetic device 3 is used as a voltage converter through a large capacitor, enamelled wires with certain thickness are wound on the strong electromagnetic spray head, a contactor is further arranged to serve as a switch and a direct current power supply with a current limiting function, the strong electromagnetic spray head 11 can magnetize ferromagnetic mineral powder in magnetic concrete slurry, and the magnetic force interaction traction effect among ferromagnetic mineral powder particles in the magnetic concrete sprayed slurry material is utilized to reduce the rebound of slurry.
Furthermore, the nozzle 12 is connected with the joint of the extended-range slurry conveying pipe 8 through threads, the disassembly is convenient, the front end is provided with a flow converter, and the aim of switching output flow is fulfilled by rotating the flow converter according to different angles and different types of slopes. Compared with the traditional spray head type, the spray head type is convenient to control the spray flow, reduces material waste, and achieves the effect of reducing concrete rebound and dust.
Example 3:
the method for performing magnetic concrete slurry spraying construction by adopting the spraying device comprises the following steps of:
step one: firstly, preparing magnetic concrete spraying slurry by taking ore waste as a raw material according to engineering requirements according to a set proportion;
step two: the prepared magnetic concrete injection slurry is transported by adopting a pumping transport vehicle, and in the transportation process, the flow rate and the flow rate of the water reducer are regulated by regulating the water reducer adding device in real time on a control console according to the transportation time and the related construction process requirements, so that the fluidity and the pumpability related parameters of the concrete slurry are controlled;
step three: after the pumping transport vehicle arrives at the construction site, checking whether the fluidity and pumpability parameters of the magnetic concrete injection slurry in the slurry stirring tank 7 meet the requirements of the injection concrete, and starting the power system to work after checking without errors, wherein the slurry is transported in a flowing way through the extended-range slurry transport pipe 8;
step four: the magnetic concrete spraying slurry flows through the accelerator adding device to add accelerator into the pipe, the rotating push rod is used for stirring the accelerator and the slurry, the flowing speed of the slurry is increased, the blockage in the pipe is reduced, and the adding dosage of the accelerator depends on the slurry conveying speed, the slurry flow and related technological parameters;
step five: under the action of the strong magnetic field of the strong electromagnetic spray head 11, the magnetic concrete slurry is magnetized by the strong electromagnetic spray head, so that ferromagnetic minerals in the magnetic concrete slurry have certain magnetism; setting the spray head to a certain flow and meeting the requirement of spray parameters;
step six: the direction of the concrete spray is controlled by the ball joint 13, and the operation is performed.
Claims (5)
1. The spraying device for spraying the magnetic concrete spraying slurry is characterized in that ferromagnetic mineral waste residues are added into the magnetic concrete spraying slurry to serve as raw materials, the ferromagnetic mineral waste residues are ground into ferromagnetic mineral waste residue powder by a ball mill, then ferromagnetic mineral waste residue powder is screened by a strong magnetic electromagnet, after ferromagnetic mineral powder containing ferromagnetic substances is adsorbed, the ferromagnetic mineral powder is added into the concrete spraying slurry material according to a certain proportion, and further magnetized materials are provided for the concrete spraying slurry material;
the magnetic concrete spraying slurry comprises cement, water, ferromagnetic mineral powder, an iron powder dispersing agent, a water reducing agent, an accelerator, a flocculant and a defoaming agent; wherein the volume ratio of the water to the ash is 0.3-0.5; the residual additive content accounts for the volume content of the cement paste as follows: 3-5% of flocculant, 0.8-1.2% of water reducer, 0.1-0.3% of defoamer, 30-55% of ferromagnetic mineral powder, 1.3-1.6% of iron powder dispersant and 2-3% of accelerator;
the accelerator is alkali-free liquid accelerator, so that the early strength of concrete is improved, and the impermeability is improved;
the spraying device comprises a concrete sprayer (1), wherein a slurry stirring tank (7) is supported and installed at the top of the concrete sprayer (1), a stirrer (10) is rotatably installed in the slurry stirring tank (7), a hopper (9) for adding raw materials is installed at the side edge of the slurry stirring tank (7), a range-extending slurry conveying pipe (8) is connected to the slurry stirring tank (7), and a strong electromagnetic spray head (11) is installed at the tail end of the range-extending slurry conveying pipe (8); the extended-range slurry conveying pipe (8) is connected with a power system for providing power;
the strong electromagnetic spray head (11) is supported at the top of the concrete sprayer (1) through a spherical hinge (13), and can rotate the direction of the strong electromagnetic spray head (11) within the range of 360 degrees in construction requirements to carry out multidirectional mortar spray irrigation;
the strong electromagnetic spray head (11) consists of a strong electromagnetic device (3) and a spray head (12), wherein the strong electromagnetic device (3) is used as a voltage converter through a large capacitor, enameled wires with certain thickness are wound on the strong electromagnetic spray head, a contactor is further arranged to serve as a switch and a direct current power supply with a current limiting function, the strong electromagnetic spray head (11) can magnetize ferromagnetic mineral powder in magnetic concrete slurry, and the magnetic force interaction traction effect among ferromagnetic mineral powder particles in the magnetic concrete spray slurry material is utilized to reduce slurry rebound;
the nozzle (12) is connected with the joint of the extended-range slurry conveying pipe (8) through threads, the disassembly is convenient, the front end is provided with a flow converter, and the aim of switching output flow is fulfilled by rotating the flow converter aiming at slopes with different angles and different types;
the top of the slurry stirring tank (7) is provided with a water reducer adding device (2) for adding a water reducer, the water reducer adding device (2) is connected with a control console, and the flow speed and the flow quantity of the water reducer can be regulated by regulating the water reducer adding device (2) in real time on the control console, so that the fluidity and pumpability parameters of the concrete sprayed slurry are controlled;
the middle position of the extended-range slurry conveying pipe (8) is provided with an accelerator adding device, the accelerator adding device consists of a tank body and an accelerator metering pump (4), a rotary push rod is arranged in the accelerator adding device, and the flow speed of mortar is accelerated while the accelerator and the slurry are stirred, so that the blockage in the pipe is reduced.
2. The spraying device for spraying the magnetic concrete spraying slurry according to claim 1, wherein after the magnetic concrete spraying slurry is prepared, a certain amount of water reducing agent is added according to the transportation time and engineering requirements to prevent the solidification and hardening of the mortar, and meanwhile, the tank truck is prevented from being stirred in a large amount during transportation, so that the transportation cost is saved, and the service life of the tank truck is prolonged.
3. The spraying device for spraying magnetic concrete spraying slurry according to claim 1, wherein the material cavity of the stirrer (10) adopts anti-adhesion high-elasticity rubber as a lining plate and adopts wear-resistant rubber material as a bonding plate.
4. The spraying device for spraying a magnetic concrete spraying slurry according to claim 1, characterized in that the power system comprises an electric motor (5) and an oil-water separator (6).
5. A method for performing magnetic concrete slurry spraying construction by using the spraying device according to any one of claims 1 to 4, comprising the steps of:
step one: firstly, preparing magnetic concrete spraying slurry by taking ore waste as a raw material according to engineering requirements according to a set proportion;
step two: the prepared magnetic concrete injection slurry is transported by adopting a pumping transport vehicle, and in the transportation process, the flow rate and the flow rate of the water reducer are regulated by regulating the water reducer adding device in real time on a control console according to the transportation time and the related construction process requirements, so that the fluidity and the pumpability related parameters of the concrete slurry are controlled;
step three: after the pumping transport vehicle arrives at a construction site, checking whether the fluidity and pumpability parameters of the magnetic concrete injection slurry in the slurry stirring tank (7) meet the requirements of the injection concrete, and starting the power system to work after checking without errors, wherein the slurry is transported in a flowing way through a length-increasing slurry transport pipe (8);
step four: the magnetic concrete spraying slurry flows through the accelerator adding device to add accelerator into the pipe, the rotating push rod is used for stirring the accelerator and the slurry, the flowing speed of the slurry is increased, the blockage in the pipe is reduced, and the adding dosage of the accelerator depends on the slurry conveying speed, the slurry flow and related technological parameters;
step five: under the action of a strong magnetic field of the strong electromagnetic spray head (11), the magnetic concrete slurry is magnetized by the strong electromagnetic spray head, so that ferromagnetic minerals in the magnetic concrete slurry have certain magnetism; setting the spray head to a certain flow and meeting the requirement of spray parameters;
step six: the spraying direction of the concrete is controlled by the spherical hinge (13) to perform the operation.
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| CN110042834A (en) * | 2019-04-22 | 2019-07-23 | 三峡大学 | The construction method of magnetic mortar anchoring body |
| CN112459495A (en) * | 2020-11-27 | 2021-03-09 | 崇仁县明生混凝土搅拌有限公司 | Reduce shower nozzle device for injection concrete of dust |
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| JP4253379B2 (en) * | 1998-11-20 | 2009-04-08 | 電気化学工業株式会社 | Cement concrete and spraying method using the same |
| CN102464466B (en) * | 2010-11-02 | 2013-08-21 | 淮南矿业(集团)有限责任公司 | Shotcrete additive and spraying technology of shotcrete |
| CN203383834U (en) * | 2013-08-06 | 2014-01-08 | 安徽佳乐建设机械有限公司 | Intelligent integrated wet shotcreting trolley |
| CN110043038A (en) * | 2019-05-29 | 2019-07-23 | 河南省中智重型机械设备有限公司 | Vehicle-mounted wet shot arm-and-hand system and its application method |
| CN217106198U (en) * | 2022-01-10 | 2022-08-02 | 齐河县城乾建材有限公司 | Jetting machine for fine stone concrete |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110042834A (en) * | 2019-04-22 | 2019-07-23 | 三峡大学 | The construction method of magnetic mortar anchoring body |
| CN112459495A (en) * | 2020-11-27 | 2021-03-09 | 崇仁县明生混凝土搅拌有限公司 | Reduce shower nozzle device for injection concrete of dust |
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