CN103643969B - A kind of colliery wet shot system of high strength low power consuming and wet shot method - Google Patents
A kind of colliery wet shot system of high strength low power consuming and wet shot method Download PDFInfo
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- CN103643969B CN103643969B CN201310676559.1A CN201310676559A CN103643969B CN 103643969 B CN103643969 B CN 103643969B CN 201310676559 A CN201310676559 A CN 201310676559A CN 103643969 B CN103643969 B CN 103643969B
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Abstract
The invention discloses a kind of colliery wet shot system of high strength low power consuming, comprise the proportioning machine (1) of order setting successively, mixer (2), spiral quantitative water distribution waggon (3) and wet-spraying machine, described mixer (2) is arranged on the downstream of described proportioning machine (1), described spiral quantitative water distribution waggon (3) is arranged on the discharge port end of described mixer (2), and described wet-spraying machine is arranged on the discharge port end of described spiral quantitative water distribution waggon (3).Water, cement, sand, stone and various additive are realized mechanization fixing quantity by the colliery wet shot system of high strength low power consuming of the present invention, alleviate the working strength of workman, ensure that the stability of concrete performance.
Description
Technical field
The present invention relates to a kind of mine apparatus, be specifically related to a kind of colliery wet shot system and wet shot method of the high strength low power consuming for concrete ejection.
Background technology
Conventional wet concrete-spraying machine utilizes compressed air, by the concrete material that certain level hydrous water gray scale mixes, by the nozzle of carrier pipe through spraying machine, eject with very high speed, thus forming concrete supporting by spray plane, be the capital equipment in current construction of shotcrete operation.Spray concrete shower nozzle is as concrete terminal output equipment, gas defence leakproof must be had, the uniform fundamental characteristics of high-voltage-resistant anti-corrosion spray concrete, and shower nozzle mostly in the market is elongated cast, concrete mixes not thorough with accelerating admixture, and ejection material to disperse face too small, cause rebound degree large, spray concrete face is easily caved in.
Summary of the invention
The technical problem to be solved in the present invention is that to overcome the concrete early strength of existing wet spraying process lower, and rebound degree is large, and the difficult problems such as site work environment dust is large, provide a kind of intensity high, consume energy few colliery wet shot system for concrete ejection and wet shot method.
A kind of colliery wet shot system of high strength low power consuming, comprise proportioning machine, mixer, spiral quantitative water distribution waggon and wet-spraying machine that order is successively arranged, described mixer is arranged on the downstream of described proportioning machine, described spiral quantitative water distribution waggon is arranged on the discharge port end of described mixer, and described wet-spraying machine is arranged on the discharge port end of described spiral quantitative water distribution waggon.
The colliery wet shot system of high strength low power consuming of the present invention, wherein said proportioning machine is arranged on the ground, described mixer, spiral quantitative water distribution waggon and wet-spraying machine are arranged at down-hole, and the discharge port end of described proportioning machine is connected by the feed inlet end of conveying device with described mixer; Described proportioning machine comprises screen pack and meausring apparatus, described conveying arrangement is the mining trolley comprising airtight transportation case, described wet-spraying machine comprises the main frame and shower nozzle that are connected by anti-high pressure conveying flexible pipe, and described main frame is connected with pressure fan, and described shower nozzle is connected with peristaltic pump; Described proportioning machine is PCW800 type proportioning machine, and described mixer is MTC150-2 type forced action type list horizontal axis concrete mixer, and described wet-spraying machine is the small-sized wet-spraying machine of JSB6-G.
The colliery wet shot system of high strength low power consuming of the present invention, wherein said shower nozzle is hollow tubular structure, its afterbody is connected with described anti-high pressure conveying flexible pipe, described anti-high pressure conveying flexible pipe is provided with the mixing of materials portion of rugby shape, and its minor axis length is greater than the diameter of described anti-high pressure conveying flexible pipe; The front end in described mixing of materials portion is provided with upper and lower two accelerating admixture adding tubes, and the angle between the axis of described accelerating admixture adding tube and the axis of described shower nozzle is acute angle.
The colliery wet shot system of high strength low power consuming of the present invention, wherein said shower nozzle is the cylinder increased gradually from afterbody to point diameter, the diameter of described shower nozzle afterbody and the diameter of described conveying flexible pipe adapt, nozzle cap is fixed with in the front end of described shower nozzle, described nozzle cap is the circular plate-like shape structure adapted with the diameter of the front-end cross-sectional view of described shower nozzle, the mid portion of described nozzle cap is without spray orifice district, its area accounts for 50 ~ 70% of whole nozzle cap area, is evenly being provided with multiple spray orifice except described without in the other parts of the nozzle cap except spray orifice district.
The colliery wet shot system of high strength low power consuming of the present invention, the angle between the axis of wherein said accelerating admixture adding tube and the axis of described shower nozzle is 30 degree; The diameter of described spray orifice is 1cm.
The colliery wet shot system of high strength low power consuming of the present invention, wherein said spiral quantitative water distribution waggon comprises car body, is arranged on the wheel on described car body and is fixed on the water distribution conveyer on described car body, and described water distribution conveyer comprises:
Water distribution conveying room, its inside comprises screw rod, described screw rod is formed by the body of rod with along the helical blade that the external surface of the described body of rod is arranged, the described body of rod is hollow tubular structure, middle part forms the waterflood path of the through described body of rod, helicla flute is formed between often adjacent two helical tooths of described helical blade, described helicla flute is evenly provided with multiple through hole flowed out that supplies water, be connected the outside of described waterflood path with the described body of rod, the front end of described screw rod is connected with the main frame of wet-spraying machine by anti-high pressure conveying flexible pipe;
Drive unit, its output is connected by the rear end of aqueduct with the screw rod in described water distribution teeter chamber, the input connection control unit of described drive unit;
Water tank, is connected with described aqueduct, and a part for described aqueduct runs through the bottom of described water tank, and the aqueduct in described water tank is provided with water injection hole;
Storage bin hopper, the discharging opening bottom it is connected with the charging aperture at top, described water distribution teeter chamber.
The colliery wet shot system of high strength low power consuming of the present invention, wherein said water tank comprises the storage tank in water injecting tank and portion placed on it, a part for described aqueduct is applied in the bottom of described water injecting tank, the part of described aqueduct and described water injecting tank two side contacts adopts sealed bearing to be connected and sealed, between described water injecting tank and storage tank, be provided with filter;
In described storage tank, comprise two resistance, resistance described in one of them is connected with described drive unit by electrode wires, and resistance described in another is connected with described control unit by electrode wires; Described control unit is connected with power supply respectively with described drive unit;
Described in described resistive distance, the distance from bottom of storage tank is 2 ~ 3cm, and apart from the sidewall distance of described storage tank at more than 15cm, the distance between described two resistance is more than 15cm.
The colliery wet shot system of high strength low power consuming of the present invention, the bottom of wherein said storage bin hopper is provided with the material baffle that can extract out; Described water distribution conveyer also comprises storage bin hopper buffer board, and its one end is fixed on the top of described water distribution conveying room, and the bottom of the other end and described storage bin hopper is hinged, and described storage bin hopper can overturn to the direction of described storage bin hopper buffer board; Discharging opening side near described storage bin hopper is provided with support mechanism, contacts with described storage bin hopper.
The colliery wet shot system of high strength low power consuming of the present invention, the diameter of wherein said through hole is 1mm, and the distance between every two adjacent described through holes is 10 ~ 15mm; Described drive unit is motor, and described control unit is single-chip microcomputer.
The wet shot method adopting the colliery wet shot system of high strength low power consuming of the present invention to carry out, comprises the steps:
Step one, raw material is placed in proportioning machine, each component to raw material of the meausring apparatus in described proportioning machine carries out precise, and screen pack filters tailings, makes its particle diameter be less than or equal to 10mm, is uniformly mixed, obtain mixed dry material I; Described raw material is made up of the material of following percentage by weight: portland cement clinker 63%; Tailings 28%; Gypsum 2.6%; Saltcake 0.45%; Alunite 2.1%; Lime 0.55%, urea element 1.5%, formaldehyde 1.8%;
Step 2, described mixed dry material I is loaded in airtight transportation case, down-hole is transported to by mining trolley, described mixed dry material I is discharged in mixer, add the high efficiency water reducing agent of 2% of described mixed dry material I quality, abundant mix and blend obtains mixed dry material II, and the rotating speed of described mixer is 800Y/min ~ 1400Y/min;
Step 3, the described mixed dry material II transported out from the discharging opening of described mixer enter into spiral quantitative water distribution waggon, described spiral quantitative water distribution car is according to the rotating speed of screw rod, regulate water injection rate and rate of water injection, complete quantitative water distribution, the mass ratio of water injection rate and described mixed dry material II is 0.25 ~ 0.31:1, obtains mixing wet feed I after water distribution;
Step 4, described mixing wet feed I enter the main frame of wet-spraying machine, pressure fan is to described main frame pressure wind simultaneously, described mixing wet feed I is depressed into shower nozzle by anti-high pressure conveying flexible pipe, described anti-high pressure conveying flexible pipe is provided with the mixing of materials portion of rugby shape, upper and lower two accelerating admixture adding tubes are provided with in its front end, accelerating admixture is delivered in described mixing of materials portion by described accelerating admixture adding tube by peristaltic pump, be mixed to get mix wet feed II with the described wet feed I that mixes, by described shower nozzle, described mixing wet feed II is ejected on metope, completes wet shot process.
The colliery wet shot system difference from prior art of high strength low power consuming of the present invention is:
Proportioning machine in the colliery wet shot system of high strength low power consuming of the present invention comprises meausring apparatus and filter, and ensure quantitatively the adding of raw material, also ensure that the particle diameter of the tailings added in the reasonable scope, material quality is excellent, does not get stuck, not blocking sprayer; Water, cement, sand, stone and various additive are realized mechanization fixing quantity by system of the present invention, alleviate the working strength of workman, ensure that the stability of concrete performance; The type shower nozzle of extending out makes wet shot concrete jet velocity fast, per hourly spray 6m3, operating efficiency improves, and concrete compactness is high, and even intensity is stablized, decreasing rebound rate, the mixing unit of elliposoidal and two accelerating admixture entrance liquidate, and ensure that fully mixing of concrete and accelerating admixture, early strength is high, temporary lining can be played, close the effect of country rock, ensure that construction safety.
The internal diameter of the conveying flexible pipe near shower nozzle afterbody expands by system of the present invention, and make it in rugby shape spheroid, accelerating admixture adding tube is connected to the front end of described rugby shape spheroid, and the axis of accelerating admixture adding tube and the axis of shower nozzle are acute angle; This design is to increase blending space, abundant mix concrete and accelerating admixture, and after the axis of accelerating admixture adding tube and shower nozzle axis be designed to acute angle, accelerating admixture is more easily by swiftly flowing concrete fluid inhalation spray head pipeline, and resilience is few; Peristaltic pump can ensure the quantitative interpolation of accelerating admixture; Described shower nozzle has multiple spray orifice, makes the mixed earth (being equal to concrete) of ejection more even; Shower nozzle in system of the present invention is provided with upper and lower two accelerating admixture entrances, and mixed earth enters Mixed Zone with accelerating admixture with contrary direction, and formation liquidates, and can fully mix, and ensure that uniformity and the stability of concrete performance, rapid solidification.
Shower nozzle of the present invention extends out the nozzle cap of type, and spray nozzle is in the outside of rounded face, middle part be without spray orifice district part, does not have jet orifice structure, makes mixed earth have the certain angle shape that falls apart to spray with tunnel by spray plane under the spray regime of high speed, jet velocity can be made larger, dispersed spraying of material can make injection rebound degree lower, and just spray intensity is larger, and intensity is higher, the two combines can reduce mixed earth springback capacity, reduces the dust content of operating space; The described area without spray orifice district part accounts for 50 ~ 70% of whole nozzle cap area, and too large shared by ratio, easily block pipeline, ratio is too little, and spray concrete speed is little, does not reach technological requirement.
Described in system of the present invention, spiral quantitative water distribution waggon employs special screw rod, and its rod member is made the tubulose of hollow shape by the basis of original screw rod, screw rod rear portion water receiving feeding mechanism, waterflood path and body of rod ft connection; Water enters the waterflood path of body of rod inside, and by the gravity pressure of water tank water body, the water inside waterflood path sprays from through hole, mixes with siccative, and screw rod rotates simultaneously, mixes cement; Described screw rod tool has the following advantages: (1) water is added by screw rod inside, avoids top to add water, concrete from entirety stir be divided into fraction to stir, therefore stir evenly; (2) greatly reduce the volume of top spice bucket, make volume less, center of gravity reduces, and structure is compacter; (3) the narrow and small construction of the work planes such as mine laneway is suitable for.
Described spiral quantitative water distribution waggon is by the cooperation of water tank, motor, single-chip microcomputer, storage bin hopper and screw rod, quantitatively can stably complete water distribution process, described water tank comprises storage tank and water injecting tank, therebetween filter can filtering granule foreign, resistance in described storage tank and motor, single-chip microcomputer, water, power supply form a loop, water tank higher than screw rod, water under Gravitative Loads toward with given pace toward water filling in screw rod; The height of the water surface determines the size being connected to resistance value in circuit, and the size of single-chip microcomputer foundation electric current according to the programme-control rotating speed set, thus changes the haulage time of concrete at screw rod, accurately ensures all concrete water yield that all proportioning is identical; In water tank during lack of water, automatically can quit work simultaneously, ensure that the safety of equipment, and the qualification rate of product, because what transport out under exsiccosis is siccative, be substandard product.
Be provided with the material baffle that can extract out bottom described storage bin hopper, close under the emergency case such as plugging, protective device, close when equipment is no meanwhile, keep screw rod clean; Also comprise discharging opening buffer board, described storage bin hopper with described jointed shaft for axle rotates, can when not needing storage bin hopper mechanical loading to described water distribution conveying room hand stock; Also be provided with support mechanism, described storage bin hopper and weight of material are wherein conducted and disperse, prevent the gravity of described storage bin hopper excessive, cause the destruction of equipment or the minimizing in application life.
Wet shot method of the present invention ensure that water, cement, sand, stone and various additive fixing quantity, and guarantee that water/binder ratio is stablized, compound homogenieity is good, there is not concrete strength and to fluctuate large defect, can better complete construction by designing requirement; Improve wet shot concrete jet velocity and wet shot concrete quality simultaneously, alleviate labor strength, improve working conditions, reduce rebound rate, the basic high dust phenomenon eliminating spray concrete scene, goes back site operation personnel with the working environment of cleaning, reduces the pollution etc. to environment.
Be described further below in conjunction with the colliery wet shot system of accompanying drawing to high strength low power consuming of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of the colliery wet shot system of high strength low power consuming of the present invention;
Fig. 2 is the structural representation in wet-spraying machine mixing of materials portion of the present invention;
Fig. 3 is the structural representation of shower nozzle of the present invention;
Fig. 4 is the structural representation of spiral quantitative water distribution waggon of the present invention;
Fig. 5 is the partial structurtes schematic diagram of screw rod of the present invention;
Fig. 6 is the lateral view of Fig. 5.
Detailed description of the invention
Embodiment 1
As shown in Figure 1, a kind of colliery wet shot system of high strength low power consuming, comprise proportioning machine 1, mixer 2, spiral quantitative water distribution waggon 3 and wet-spraying machine that order is successively arranged, described mixer 2 is arranged on the downstream of described proportioning machine 1, described spiral quantitative water distribution waggon 3 is arranged on the discharge port end of described mixer 2, and described wet-spraying machine is arranged on the discharge port end of described spiral quantitative water distribution waggon 3.
Embodiment 2
As shown in Figure 1, a kind of colliery wet shot system of high strength low power consuming, comprise proportioning machine 1, mixer 2, spiral quantitative water distribution waggon 3 and wet-spraying machine that order is successively arranged, described mixer 2 is arranged on the downstream of described proportioning machine 1, described spiral quantitative water distribution waggon 3 is arranged on the discharge port end of described mixer 2, and described wet-spraying machine is arranged on the discharge port end of described spiral quantitative water distribution waggon 3.
Described proportioning machine 1 is arranged on the ground, and described mixer 2, spiral quantitative water distribution waggon 3 and wet-spraying machine are arranged at down-hole, and the discharge port end of described proportioning machine 1 is connected by the feed inlet end of conveying device with described mixer 2; Described proportioning machine 1 comprises filter and meausring apparatus, described conveying arrangement is the mining trolley comprising airtight transportation case, described wet-spraying machine comprises the main frame 4 and shower nozzle 5 that are connected by anti-high pressure conveying flexible pipe 8, and described main frame 4 is connected with pressure fan 6, and described shower nozzle 5 is connected with peristaltic pump 7; Described proportioning machine 1 is PCW800 type proportioning machine, and described mixer 2 is MTC150-2 type forced action type list horizontal axis concrete mixer, and described wet-spraying machine is the small-sized wet-spraying machine of JSB6-G.
As shown in Figures 2 and 3, described shower nozzle 5 is hollow tubular structure, its afterbody is connected with described anti-high pressure conveying flexible pipe 8, and described anti-high pressure conveying flexible pipe 8 is provided with the mixing of materials portion 9 of rugby shape, and its minor axis length is greater than the diameter of described anti-high pressure conveying flexible pipe 8; The front end in described mixing of materials portion 9 is provided with upper and lower two accelerating admixture adding tubes 10, and the angle between the axis of described accelerating admixture adding tube 10 and the axis of described shower nozzle 5 is acute angle.
Described shower nozzle 5 is the cylinder increased gradually from afterbody to point diameter, the diameter of described shower nozzle 5 afterbody and the diameter of described conveying flexible pipe 8 adapt, nozzle cap 11 is fixed with in the front end of described shower nozzle 5, described nozzle cap 11 is the circular plate-like shape structure adapted with the diameter of the front-end cross-sectional view of described shower nozzle 5, the mid portion of described nozzle cap 11 is without spray orifice district 31, its area accounts for 50 ~ 70% of whole nozzle cap 11 area, preferably 60%, too large shared by ratio, easily block pipeline, ratio is too little, and spray concrete speed is little, does not reach technological requirement.Described without spray orifice district 31 there is no spray orifice 12 structure, in the other parts without the nozzle cap 11 outside spray orifice district 31 described in removing mid portion, (namely around described nozzle cap 11) is evenly provided with multiple spray orifice 12, mixed earth is made to have the certain angle shape that falls apart to spray with tunnel by spray plane under spray regime at a high speed, reduce spray concrete rebound degree, the two combines can reduce mixed earth springback capacity, reduces the dust content of operating space.Angle between the axis of described accelerating admixture adding tube 10 and the axis of described shower nozzle 5 is 30 degree; The diameter of described spray orifice 12 is 1cm.Shower nozzle 5 of the present invention can make concrete mix earth better to spread out, more uniformly be ejected on metope, rebound rate can be reduced, also the thickness that spray concrete is formed on the inwall of tunnel can be held better, the mixing of materials portion 9 of described rugby shape expands the blending space of material, abundant mix concrete and accelerating admixture, and after the axis of accelerating admixture adding tube 10 and shower nozzle 5 axis designs acutangulate, accelerating admixture is more easily by swiftly flowing concrete fluid inhalation spray head pipeline.
As shown in Fig. 4 ~ Fig. 6, the water distribution conveyer that described spiral quantitative water distribution waggon comprises car body 13, is arranged on the wheel 14 on described car body 13 and is fixed on described car body 13, described water distribution conveyer comprises:
Water distribution conveying room, its inside comprises screw rod 15, described screw rod 15 is formed by the body of rod 16 with along the helical blade 18 that the external surface of the described body of rod 16 is arranged, the described body of rod 16 is hollow tubular structure, middle part forms the waterflood path 17 of the through described body of rod 16, helicla flute is formed between often adjacent two helical tooths of described helical blade 18, described helicla flute is evenly provided with multiple through hole 19 flowed out that supplies water, the outside of described waterflood path 17 with the described body of rod 16 is connected, the front end of described screw rod 15 is connected with the main frame 4 of wet-spraying machine by anti-high pressure conveying flexible pipe 8,
Drive unit 20, its output is connected with the rear end of the screw rod 15 in described water distribution teeter chamber by aqueduct 21, the input connection control unit of described drive unit 20; Water tank, is connected with described aqueduct 21, and a part for described aqueduct 21 runs through the bottom of described water tank, and the aqueduct 21 in described water tank is provided with water injection hole 22; Storage bin hopper 23, the discharging opening bottom it is connected with the charging aperture at top, described water distribution teeter chamber.Described drive unit 20 is the powered rotation of described hydraulic pipeline 21 and described screw rod 15, described drive unit 20 is connected with described screw rod 15 by described hydraulic pipeline 21, during work, described drive unit 20 drives described hydraulic pipeline 21 to rotate, simultaneously, described hydraulic pipeline 21 drives described screw rod 15 to rotate, and the rotational of described screw rod 15 plays the effect of stirring and transporting.
Described water tank comprises the storage tank 25 in water injecting tank 24 and portion placed on it, a part for described aqueduct 21 is applied in the bottom of described water injecting tank 24, described aqueduct 21 adopts sealed bearing 26 to be connected and sealed with the part of described water injecting tank 24 liang of side contacts, prevent from leaking, between described water injecting tank 24 and storage tank 25, be provided with filter; In described storage tank 25, comprise two resistance 27, resistance 27 described in one of them is connected with described drive unit 20 by electrode wires, and described in another, resistance 27 is connected with described control unit by electrode wires; Described control unit is connected with power supply respectively with described drive unit 20; Described resistance 27 is 2 ~ 3cm apart from the distance from bottom of described storage tank 25, and apart from the sidewall distance of described storage tank 25 at more than 15cm, the distance between described two resistance 27 is more than 15cm.Described drive unit 20 is preferably motor, described control unit is preferably single-chip microcomputer, wherein a kind of connected mode is specially: two resistance 27, one of them resistance 27 is connected with motor by electrode wires, described motor is also connected with the live wire of power supply, another one resistance 27 is connected with described single-chip microcomputer by electrode wires, described single-chip microcomputer is also connected with the zero line of power supply, when having water to exist, power supply, motor, single-chip microcomputer and two resistance form a loop, whole system is started working, when discharge reduction is in exsiccosis, when water can not contact with described resistance 27, because without the medium (water) of link circuit, loop is cut off, the work of automatic arrestment, the safety that the equipment that ensure that runs, it also avoid the generation of substandard product (in lack of water situation simultaneously, what terminal exported is water-free siccative, for substandard product).
The bottom of described storage bin hopper 23 is provided with the material baffle 28 that can extract out; Described water distribution conveyer also comprises storage bin hopper buffer board 29, and its one end is fixed on the top of described water distribution conveying room, and the bottom of the other end and described storage bin hopper 23 is hinged, and described storage bin hopper 23 can overturn to the direction of described storage bin hopper buffer board 29; Discharging opening side near described storage bin hopper 23 is provided with support mechanism 30, contacts with described storage bin hopper 23; The diameter of described through hole 19 is 1mm, and the distance between every two adjacent described through holes 19 is 10 ~ 15mm.
The course of work of described spiral quantitative water distribution waggon 3 is specially: water filling in described water tank, mixed dry material is discharged in described storage bin hopper 23, extract described material baffle 28 out, described siccative is allowed to enter water distribution conveying room, start power supply and motor, screw rod 15 starts to rotate, water filling simultaneously, water enters aqueduct 21 by water injection hole 22 due to pressure from described water tank, water flows out from through hole 19, be mixed with wet feed with described siccative, screw rod 15 rotates the described wet feed prepared to transport out to be delivered to conveying flexible pipe and is for further processing.
Embodiment 3
The wet shot method adopting the colliery wet shot system of high strength low power consuming of the present invention to carry out, comprises the steps:
Step one, raw material is placed in proportioning machine 1, each component to raw material of the meausring apparatus in described proportioning machine 1 carries out precise, and filter filters tailings, makes its particle diameter be less than or equal to 10mm, is uniformly mixed, obtain mixed dry material I; Described raw material is made up of the material of following percentage by weight: portland cement clinker 63%; Tailings 28%; Gypsum 2.6%; Saltcake 0.45%; Alunite 2.1%; Lime 0.55%, urea element 1.5%, formaldehyde 1.8%;
Step 2, described mixed dry material I is loaded in airtight transportation case, down-hole is transported to by mining trolley, described mixed dry material I is discharged in mixer 2, add the high efficiency water reducing agent of 2% of described mixed dry material I quality, abundant mix and blend obtains mixed dry material II, and the rotating speed of described mixer 2 is 800Y/min ~ 1400Y/min; The effect adopting the transport of airtight transportation case prevents from making moist and prevent material to be subject to the impact of the external factors such as air;
Step 3, the described mixed dry material II transported out from the discharging opening of described mixer 2 enter into spiral quantitative water distribution waggon 3, described spiral quantitative water distribution car 3 is according to the rotating speed of screw rod 15, regulate water injection rate and rate of water injection, complete quantitative water distribution, the mass ratio of water injection rate and described mixed dry material II is 0.25 ~ 0.31:1, obtains mixing wet feed I after water distribution;
Step 4, described mixing wet feed I enters the main frame 4 of wet-spraying machine, pressure fan 6 presses wind to described main frame 4 simultaneously, described mixing wet feed I is depressed into shower nozzle 5 by anti-high pressure conveying flexible pipe 8, described anti-high pressure conveying flexible pipe 8 is provided with the mixing of materials portion 9 of rugby shape, upper and lower two accelerating admixture adding tubes 10 are provided with in its front end, accelerating admixture is delivered in described mixing of materials portion 9 by described accelerating admixture adding tube 10 by peristaltic pump 7, be mixed to get mix wet feed II with the described wet feed I that mixes, by described shower nozzle 5, described mixing wet feed II is ejected on metope, complete wet shot process.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (7)
1. the colliery wet shot system of a high strength low power consuming, it is characterized in that: comprise the proportioning machine (1) of order setting successively, mixer (2), spiral quantitative water distribution waggon (3) and wet-spraying machine, described mixer (2) is arranged on the downstream of described proportioning machine (1), described spiral quantitative water distribution waggon (3) is arranged on the discharge port end of described mixer (2), and described wet-spraying machine is arranged on the discharge port end of described spiral quantitative water distribution waggon (3);
Described proportioning machine (1) is arranged on the ground, described mixer (2), spiral quantitative water distribution waggon (3) and wet-spraying machine are arranged at down-hole, and the discharge port end of described proportioning machine (1) is connected by the feed inlet end of conveying device with described mixer (2); Described proportioning machine (1) comprises filter and meausring apparatus, described conveying device is the mining trolley comprising airtight transportation case, described wet-spraying machine comprises the main frame (4) and shower nozzle (5) that are connected by anti-high pressure conveying flexible pipe (8), described main frame (4) is connected with pressure fan (6), and described shower nozzle (5) is connected with peristaltic pump (7);
Described shower nozzle (5) is hollow tubular structure, its afterbody is connected with described anti-high pressure conveying flexible pipe (8), described anti-high pressure conveying flexible pipe (8) is provided with the mixing of materials portion (9) of rugby shape, and its minor axis length is greater than the diameter of described anti-high pressure conveying flexible pipe (8); The front end of described mixing of materials portion (9) is provided with upper and lower two accelerating admixture adding tubes (10), and the angle between the axis of described accelerating admixture adding tube (10) and the axis of described shower nozzle (5) is acute angle;
Described shower nozzle (5) is the cylinder increased gradually from afterbody to point diameter, the diameter of described shower nozzle (5) afterbody and the diameter of described anti-high pressure conveying flexible pipe (8) adapt, nozzle cap (11) is fixed with in the front end of described shower nozzle (5), described nozzle cap (11) is the circular plate-like shape structure adapted with the diameter of the front-end cross-sectional view of described shower nozzle (5), the mid portion of described nozzle cap (11) is without spray orifice district (31), its area accounts for 50% ~ 70% of whole nozzle cap (11) area, multiple spray orifice (12) is evenly being provided with without on the nozzle cap (11) except spray orifice district (31) except described,
The water distribution conveyer that described spiral quantitative water distribution waggon (3) comprises car body (13), is arranged on the wheel (14) on described car body (13) and is fixed on described car body (13), described water distribution conveyer comprises:
Water distribution conveying room, its inside comprises screw rod (15), described screw rod (15) is formed by the body of rod (16) with along the helical blade (18) that the external surface of the described body of rod (16) is arranged, the described body of rod (16) is hollow tubular structure, middle part forms the waterflood path (17) of the through described body of rod (16), helicla flute is formed between often adjacent two helical tooths of described helical blade (18), described helicla flute is evenly provided with multiple through hole (19) flowed out that supplies water, the outside of described waterflood path (17) with the described body of rod (16) is connected, the front end of described screw rod (15) is connected with the main frame (4) of wet-spraying machine by anti-high pressure conveying flexible pipe (8),
Drive unit (20), its output is connected with the rear end of the screw rod (15) in water distribution teeter chamber by aqueduct (21), the input connection control unit of described drive unit (20); Water tank is connected with described aqueduct (21), and a part for described aqueduct (21) runs through the bottom of described water tank, and the aqueduct (21) in described water tank is provided with water injection hole (22);
Storage bin hopper (23), the discharging opening bottom it is connected with the charging aperture at top, described water distribution teeter chamber.
2. the colliery wet shot system of high strength low power consuming according to claim 1, it is characterized in that: described proportioning machine (1) is PCW800 type proportioning machine, described mixer (2) is MTC150-2 type forced action type list horizontal axis concrete mixer, and described wet-spraying machine is the small-sized wet-spraying machine of JSB6-G.
3. the colliery wet shot system of high strength low power consuming according to claim 2, is characterized in that: the angle between the axis of described accelerating admixture adding tube (10) and the axis of described shower nozzle (5) is 30 degree; The diameter of described spray orifice (12) is 1cm.
4. the colliery wet shot system of high strength low power consuming according to claim 1, is characterized in that:
Described water tank comprises the storage tank (25) in water injecting tank (24) and portion placed on it, a part for described aqueduct (21) is applied in the bottom of described water injecting tank (24), described aqueduct (21) adopts sealed bearing (26) to be connected and sealed with the part of described water injecting tank (24) two side contacts, between described water injecting tank (24) and storage tank (25), be provided with filter;
Two resistance (27) are comprised in described storage tank (25), resistance described in one of them (27) is connected with described drive unit (20) by electrode wires, and resistance described in another (27) is connected with described control unit by electrode wires; Described control unit is connected with power supply respectively with described drive unit (20);
Described resistance (27) is 2 ~ 3cm apart from the distance from bottom of described storage tank (25), apart from the sidewall distance of described storage tank (25) at more than 15cm, the distance between described two resistance (27) is more than 15cm.
5. the colliery wet shot system of high strength low power consuming according to claim 4, is characterized in that: the bottom of described storage bin hopper (23) is provided with the material baffle (28) that can extract out; Described water distribution conveyer also comprises storage bin hopper buffer board (29), its one end is fixed on the top of described water distribution conveying room, the bottom of the other end and described storage bin hopper (23) is hinged, and described storage bin hopper (23) can overturn to the direction of described storage bin hopper buffer board (29); Discharging opening side near described storage bin hopper (23) is provided with support mechanism (30), contacts with described storage bin hopper (23).
6. the colliery wet shot system of high strength low power consuming according to claim 5, is characterized in that: the diameter of described through hole (19) is 1mm, and the distance between every two adjacent described through holes (19) is 10 ~ 15mm; Described drive unit (20) is motor, and described control unit is single-chip microcomputer.
7. the wet shot method adopting the colliery wet shot system of high strength low power consuming described in any one in claim 1-6 to carry out, is characterized in that: comprise the steps:
Step one, raw material is placed in proportioning machine (1), meausring apparatus in described proportioning machine (1) each component to raw material carries out precise, and filter filters tailings, makes its particle diameter be less than or equal to 10mm, be uniformly mixed, obtain mixed dry material I; Described raw material is made up of the material of following percentage by weight: portland cement clinker 63%; Tailings 28%; Gypsum 2.6%; Saltcake 0.45%; Alunite 2.1%; Lime 0.55%, urea element 1.5%, formaldehyde 1.8%;
Step 2, described mixed dry material I is loaded in airtight transportation case, down-hole is transported to by mining trolley, described mixed dry material I is discharged in mixer (2), add the high efficiency water reducing agent of 2% of described mixed dry material I quality, abundant mix and blend obtains mixed dry material II, and the rotating speed of described mixer (2) is 800Y/min ~ 1400Y/min;
Step 3, the described mixed dry material II transported out from the discharging opening of described mixer (2) enter into spiral quantitative water distribution waggon (3), described spiral quantitative water distribution waggon (3) is according to the rotating speed of screw rod (15), regulate water injection rate and rate of water injection, complete quantitative water distribution, the mass ratio of water injection rate and described mixed dry material II is 0.25 ~ 0.31:1, obtains mixing wet feed I after water distribution;
Step 4, described mixing wet feed I enters the main frame (4) of wet-spraying machine, pressure fan (6) is to described main frame (4) pressure wind simultaneously, described mixing wet feed I is depressed into shower nozzle (5) by anti-high pressure conveying flexible pipe (8), described anti-high pressure conveying flexible pipe (8) is provided with the mixing of materials portion (9) of rugby shape, upper and lower two accelerating admixture adding tubes (10) are provided with in its front end, accelerating admixture is delivered in described mixing of materials portion (9) by described accelerating admixture adding tube (10) by peristaltic pump (7), be mixed to get mix wet feed II with the described wet feed I that mixes, by described shower nozzle (5), described mixing wet feed II is ejected on metope, complete wet shot process.
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| CN201310676559.1A CN103643969B (en) | 2013-12-12 | 2013-12-12 | A kind of colliery wet shot system of high strength low power consuming and wet shot method |
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| CN104314586A (en) * | 2014-10-21 | 2015-01-28 | 山西潞安矿业(集团)有限责任公司 | Long-distance guniting material delivery system |
| CN108049889A (en) * | 2018-01-24 | 2018-05-18 | 兖州煤业股份有限公司 | A kind of Fully-mechanized remote shotcreting process in colliery |
| CN109236329A (en) * | 2018-11-13 | 2019-01-18 | 湖南黄金洞矿业有限责任公司 | A kind of underground tailings wet shotcrete method for protecting support |
| CN111195989B (en) * | 2018-11-19 | 2021-08-06 | 故城北新建材有限公司 | Energy-saving control system |
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