CN115431413A - Foamed concrete preparation device and preparation process - Google Patents

Abstract

The invention discloses a foamed concrete preparation device and a preparation process, wherein a rack is provided with a material dry-mixing stirring system, a material wet-mixing stirring system, a heating and heat-preserving system, a conveying system, an additive system, a foaming system and a control system; the mixture passing through the dry mixing and stirring system is conveyed to a material wet mixing and stirring system by a conveying system for mixing, then is conveyed by the conveying system, is uniformly sprayed with a foaming agent by a spraying device of a foaming system, and then enters a foaming device to complete a foaming process; in each step of dry mixing, wet mixing and foaming agent spraying of the materials to foaming completion, an independent heating and heat preservation device is arranged, so that the foaming temperature is constant, the foaming efficiency is high, the structural design of the foaming concrete preparation device is reasonable, the mixing uniformity of the materials to be stirred and the foaming agent is good, the overall quality of products is improved, and the production efficiency and the economic benefit are improved.

Description

Foamed concrete preparation device and preparation process

Technical Field

The invention relates to civil and architectural engineering mechanical equipment, in particular to a foamed concrete preparation device and a preparation process.

Background

The foamed concrete has good characteristics and is widely applied to energy-saving wall materials such as insulation boards, members and the like. In the existing chemical foaming concrete, a chemically foaming foam group should meet the requirement that foam concrete slurry is not broken and deformed before final setting, but the foam diameter is changed along with the difference of pressure and the amount of foaming substances and is difficult to control, the existing foam concrete manufacturing equipment is difficult to fully mix foam slurry and cement slurry uniformly, the mixing effect is poor, part of the inner part of the cement slurry is not contacted with the foam slurry, so that serious phenomena such as bubble breakage and perforation are caused, and further a large number of closed air holes do not exist in the manufactured concrete, and the product quality cannot be ensured.

Disclosure of Invention

In order to solve the problems, the invention provides a foamed concrete preparation device and a preparation process, wherein the foamed concrete preparation process comprises the following steps:

s1, starting a power supply, checking whether the state of each device is normal, and inputting the mixing proportion, the yield and the set temperature of the foamed concrete on a control system;

s2, starting a heating and heat-preserving system, heating the material dry-mixing and stirring system, the material wet-mixing and stirring system, the constant-temperature conjoined spiral mixer, the heat-preserving mold box and the hot water storage tank, stopping heating and keeping constant temperature when the temperature reaches a set temperature, and controlling the system to automatically start the heating and heat-preserving system to heat when the temperature is lower than the set temperature by 1 ℃;

s3, closing a discharge valve of a stirrer II of the material wet-mixing stirring system, starting a water pump, conveying water into a water metering bin from a hot water storage tank, automatically calculating the water consumption by a control system according to a set mixing ratio, stopping the water pump when the conveyed water reaches the required consumption, feeding the water in the water metering bin into the stirrer II to stir and moisten the kettle, stopping stirring after the stirring time is more than or equal to 3S, keeping the water in the kettle body at a constant temperature, and automatically starting a heating and heat-preserving system to heat when the temperature is lower than the set temperature by 1 DEG;

meanwhile, the control system automatically calculates the using amount of each powder according to the set mixing ratio, the conveying system conveys each powder into a stirrer I of the material dry-mixing stirring system to stir, the temperature in the stirrer I is measured during stirring, the temperature in the stirrer I is ensured to be 35-45 ℃, and the temperature adjusting precision is +/-1 ℃;

s4, conveying the mixed powder into a stirrer II by using a conveying system, automatically calculating the using amount of each additive by using a control system according to a set mixing ratio, adding each additive into the stirrer II by using the conveying system according to the calculated using amount to stir, measuring the pot body temperature of the stirrer II and the temperature of the stirred mixture during stirring, ensuring that the temperature is adjustable between 35 and 45 degrees, adjusting the temperature to +/-1 ℃ with the temperature adjusting precision, and stopping heating and preserving heat when the temperature of the mixture reaches a set temperature;

s5, opening a discharging valve of the stirring machine II, discharging the stirred mixture from the stirring machine II, and allowing the stirred mixture to enter a feeding hole of the constant-temperature conjoined spiral mixer, wherein the control system controls the foaming system to spray the foaming agent, the spraying pressure of the foaming agent can be adjusted as required, the control system automatically controls and ensures the spraying time of the foaming agent, the instantaneous spraying flow and the discharging slurry state of the stirring machine to be consistent according to the total amount of the materials in the stirring machine II and the discharging speed, namely the mixing proportion of the slurry and the foaming agent is kept to be the same, and the synchronous control system controls the constant-temperature conjoined spiral mixer to operate, so that the materials and the foaming agent are uniformly mixed; meanwhile, according to the action time of a discharge valve of the stirrer II, the control system controls the spraying opening of the foaming agent and the opening of the constant-temperature conjoined spiral mixer, so that all materials are output simultaneously, the flush and tail alignment are ensured, and the linear proportional relation between the spraying flow of the foaming agent and the flow of the mixture is ensured;

and S6, uniformly mixing the slurry with a foaming agent, dropping the slurry into a heat-preservation mold box, and statically foaming for 10-45S to obtain a finished product.

A preparation device for a foaming concrete preparation process comprises a rack, wherein a material dry-mixing stirring system, a material wet-mixing stirring system, a heating and heat-insulating system, a conveying system, an additive system, a foaming system and a control system are arranged on the rack;

the heating and heat-preserving system comprises all heating and heat-preserving devices and components in all the systems, and the heating and heat-preserving devices comprise heaters, heating layers and heat-preserving layers;

the conveying system comprises all conveying devices and components in all the systems;

the additive system comprises all additive devices and components in all the systems, wherein each additive device comprises an additive storage tank, an additive pump and an additive metering bin;

the foaming system comprises a spraying device and a foaming device;

the control system is connected with all other systems and controls the action execution of the devices;

the mixture of the material dry mixing and stirring system is conveyed to the material wet mixing and stirring system by the conveying system for mixing, then is conveyed by the conveying system, is uniformly sprayed by the spraying device while being sprayed with the foaming agent, and then enters the foaming device to complete the foaming process.

Further, the stirring system is mixed futilely to material includes mixer I, powder storehouse and powder measurement storehouse, conveying system includes screw conveyer and elevator bucket, screw conveyer one end with the powder storehouse links to each other, the other end with the powder measurement storehouse links to each other, the discharge gate in powder measurement storehouse with the feed inlet of mixer I links to each other, the discharge gate of mixer I with the elevator bucket links to each other, the agitator kettle outside of mixer I sets up heating heat preservation device, the zone of heating with heater I links to each other, be provided with the detection on the mixer I the temperature sensor I of heating in situ temperature.

Further, material wet mixing system includes mixer II, be provided with on the mixer II with the liquid material feed inlet that additive measurement storehouse and water measurement storehouse correspond, still be provided with baffle box and discharge opening on the mixer II, the lift bucket with the baffle box links to each other, the discharge opening department of mixer II is provided with the butterfly valve, the agitator kettle outside of mixer II sets up heating heat preservation device, the temperature control device who is used for detecting material temperature in the agitator kettle and being used for detecting the temperature sensor II of heating layer internal temperature, the zone of heating links to each other with heater II.

Further, mixer II is vertical mixer, the agitated kettle upper portion of mixer II is cylindrical, and the lower part is conical, set up two (mixing) shafts in the agitated kettle of mixer II, the (mixing) shaft sets up to high-speed shaft and low-speed axle, the rotational speed of high-speed shaft is not less than 900r/min, the low-speed shaft with a plurality of paddles are established to the epaxial cover respectively of high-speed, the low-speed shaft with the high-speed shaft is lower portion paddle angle opposite with upper portion paddle angle, evenly be provided with spoiler and spoiler bar in the agitated kettle of mixer II, the spoiler sets up on the agitated kettle cylindrical portion's of mixer II lateral wall, the spoiler is trapezium structure and is equipped with the vortex hole, the spoiler bar sets up on the agitated kettle conical portion's of mixer II lateral wall, the spoiler with spoiler bar dislocation set.

Further, temperature control device includes guide rail, guide ring, elastic rubber sleeve, power device and is used for detecting temperature sensor III of material temperature in the mixer II, the guide rail with mixer II links to each other, the guide ring run through and link firmly in the jar wall in the mixer II, temperature sensor III's probe runs through elastic rubber sleeve and with the hole cooperation of guide ring, temperature sensor III is in power device's drive is followed down the guide rail comes and goes to slide.

Furthermore, a temperature sensor IV is arranged outside the water metering bin, at least one electric heating pipe is arranged on the side part and the bottom of an inner cavity of the water metering bin, and the control system ensures that the temperature error of water entering the material wet mixing and stirring system is not more than 1 ℃ according to the set temperature.

Further, conveying system still includes constant temperature disjunctor spiral mixer, constant temperature disjunctor spiral mixer includes casing, spiral rotation axis, the axle of mixing, feed inlet and discharge gate, the spiral rotation axis with the axle of mixing sets up in the casing, the axle of mixing sets up the below of two-way spiral rotation axis just the epaxial dislocation equipartition of mixing is provided with the mix blade, be provided with helical blade on the spiral rotation axis, helical blade is two-way spiral and sets up to both ends in succession from the intermediate position, the feed inlet sets up casing top intermediate position, the discharge gate sets up casing bottom and uncovered setting, spiral rotation axis one end is stretched out the casing links to each other with driving motor, and the other end stretches out the casing links to each other with the sprocket, the axle of mixing with the sprocket links to each other, the lateral wall of casing is provided with heating and heat preservation device is provided with temperature sensor V on the heating and heat preservation device, the zone of heating with heater III links to each other, feed inlet department be provided with the nozzle on the casing.

Furthermore, helical blade is followed helical rotation axle intermediate position is provided with helical blade I, helical blade II, helical blade III, helical blade IV to both ends in succession, wherein helical blade I, helical blade IV's the direction of rotation is the levogyration, helical blade II, helical blade III's the direction of rotation is the dextrorotation, just helical blade I, helical blade III sets up in same one side, helical blade II, helical blade IV sets up in the opposite side.

Further, the foaming device is the mould case that keeps warm, the mould case that keeps warm sets up constant temperature disjunctor spiral mixer the discharge gate below, the mould case that keeps warm sets up on the track, the mould case that keeps warm be provided with track complex wheel can slide on the track, the mould case outside that keeps warm is provided with heating heat preservation device, the zone of heating with heater IV links to each other, the last temperature sensor VI that is provided with of heating device.

Furthermore, the heating and heat-insulating system further comprises a heat-insulating chamber, the constant-temperature conjoined spiral mixer and the heat-insulating mold box are arranged in the heat-insulating chamber, and the heat-insulating chamber is provided with a door through which the heat-insulating mold box slides.

Furthermore, sprinkler includes foamer holding vessel, pipeline, pump, foamer measurement storehouse and gas package, the foamer holding vessel is connected the pump, the pump passes through the pipe connection foamer measurement storehouse, the foamer measurement storehouse is connected the gas package, the nozzle with the gas package links to each other.

Has the advantages that:

1. the fine powder is dry-mixed, so that the uniform mixing of the powder is facilitated, and the uniformly mixed powder is mixed with the additive and water, so that the uniformity of the cement concrete slurry is good;

2. the dry mixing, the wet mixing and the water of the powder are heated, insulated and detected, so that the temperature consistency of the cement concrete grout is good, and the temperature of the concrete grout is directly detected, thereby ensuring the product quality;

3. cement concrete slurry is discharged from a stirrer of a material wet mixing stirring system and enters a feed inlet of a constant-temperature conjoined spiral mixer, foaming agent is sprayed simultaneously, the total discharging time automatically controls the opening degree of a discharging valve of the foaming agent to ensure that the discharging time of the foaming agent is consistent with the discharging time of the stirrer, and the constant-temperature conjoined spiral mixer is synchronously controlled to operate to ensure that the materials are uniformly mixed with hydrogen peroxide; meanwhile, the opening of the foaming agent spraying and the opening of the discharging screw are controlled according to the action time of the discharging door opening mechanical valve of the mixer, so that all materials are output simultaneously, the flush and tail alignment are ensured, the instantaneous flow of the foaming agent spraying is ensured to be in proportion to the instantaneous flow of the slurry, and the mixing quality of the foaming agent when the concrete slurry is less at the initial stage and the end of discharging is ensured;

4. two stirring shafts are arranged in a stirrer II of the material wet mixing stirring system and are arranged as a high-speed shaft and a low-speed shaft, so that the stirred concrete slurry generates a speed gradient, the stirring materials can be effectively subjected to high shearing, extrusion and diffusion by the spoilers and the spoiler rods which are uniformly staggered, the integral homogeneity of the mixing is improved, and meanwhile, the angle of the lowermost blades of the first stirring shaft and the second stirring shaft is opposite to that of the upper blades, so that the materials at the bottom of the cylinder body can be thrown upwards, and the stirring convection is quicker and more sufficient;

5. the constant-temperature conjoined spiral mixer is provided with a spiral rotating shaft and a mixing shaft in a shell, so that materials are mixed in different modes, a foaming agent and concrete are mixed more uniformly, and the materials can be uniformly conveyed from the middle position to two sides of the spiral rotating shaft while falling to the spiral rotating shaft by arranging spiral blades in two rotation directions from the middle to two ends, so that the accumulation at a feed inlet is avoided, and slurry is dispersed and falls; the mixture is discharged into the foaming device in time through the discharge port in an open state to carry out the foaming process, so that the problem that the equipment is blocked and cannot be discharged to influence the production due to the fact that the discharging speed is low to cause the mixture to carry out the foaming process in the conveying equipment is solved;

6. the constant-temperature conjoined spiral mixer and the heat-insulation mould box are arranged in the heat-insulation chamber, so that the temperature of the foaming process of the concrete is constant, the foaming rate is ensured, the foam breaking rate is reduced, and the foaming quality is ensured.

Drawings

FIG. 1 is a schematic view of a manufacturing apparatus according to the present invention;

FIG. 2 is a schematic structural view of a stirrer II according to the present invention;

FIG. 3 is a schematic diagram of the components of blender II according to the present invention;

FIG. 4 is a schematic view of the structure of the constant temperature conjoined spiral mixer of the present invention;

FIG. 5 isbase:Sub>A view A-A of FIG. 4 in accordance with the present invention;

in the figure: 1. a frame; 2. a dry material mixing system; 21. a stirrer I; 22. a powder bin; 23. a powder metering bin; 24. a temperature sensor I; 25. a heater I; 3. a material wet mixing system; 31. a stirrer II; 311. a stirred pot; 32. a high speed shaft; 33. a low speed shaft; 34. a drive device; 35. a liquid material feeding hole; 36. a gate valve; 37. a material guide chute; 38. a discharge opening; 39. a butterfly valve; 312. a temperature control device; 3121. a guide rail; 3122. a power plant; 3123. a temperature sensor III; 3124. an elastic rubber sleeve; 3125. a guide ring; 313. a temperature sensor II; 314. a spoiler; 315. a spoiler bar 3; 4. a heating and heat-preserving system; 41. a heating and heat-preserving device; 411. a heating layer; 412. a heat-insulating layer; 42. a heat preservation chamber; 43. a door; 44. a heater II; 45. heaters III and 46 and a heater IV; 5. a delivery system; 51. a screw conveyor; 52. an elevator bucket; 53. a constant temperature conjoined spiral mixer; 531. a housing; 532. a helical rotating shaft; 5321. a helical blade I; 5322. a helical blade II; 5323. a helical blade III; 5324. a helical blade IV; 533. a mixing shaft; 5331. mixing blades; 534. a feed inlet; 535. a discharge port; 536. a drive motor; 537. a sprocket; 538. a nozzle; 539. a temperature sensor V; 6. an additive system; 61. an additive metering bin; 612. an additive pump; 613. an additive storage tank; 62. a water metering bin; 621. a temperature sensor IV; 622. an electric heating tube; 623. a water pump; 624. a hot water storage tank; 7. a foaming system; 71. a spraying device; 711. a foaming agent storage tank; 712. a pipeline; 713. a foaming agent pump; 714. a foaming agent metering bin; 715. air bag; 72. a heat preservation mould box; 721. a wheel; 722. a temperature sensor VI; 8. a control system; 9. a guide rail.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used in other meanings besides orientation or positional relationship, for example, the term "upper" may also be used in some cases to indicate a certain attaching or connecting relationship. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as the case may be.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict, and the present application will be described in detail with reference to the accompanying drawings and embodiments.

The specific embodiment is as follows:

the following detailed description of the preferred embodiments will be made with reference to the accompanying drawings.

S1, starting a power supply, checking whether the state of each device is normal, and inputting the mixing proportion, the yield and the set temperature of the foamed concrete on a control system;

s2, starting a heating and heat-preserving system, heating the material dry-mixing and stirring system, the material wet-mixing and stirring system, the constant-temperature conjoined spiral mixer, the heat-preserving mold box and the hot water storage tank, stopping heating and keeping constant temperature when the temperature reaches a set temperature, and controlling the system to automatically start the heating and heat-preserving system to heat when the temperature is lower than the set temperature by 1 ℃;

s3, closing a discharge valve of a stirrer II of the material wet mixing and stirring system, starting a water pump, conveying water into a water metering bin from a hot water storage tank, automatically calculating the water consumption by a control system according to a set mixing ratio, stopping the water pump when the conveyed water reaches the required consumption, feeding the water in the water metering bin into the stirrer II to stir and moisten the kettle, stopping stirring after the stirring time is more than or equal to 3S, keeping the water in the kettle body at a constant temperature, and automatically starting a heating and heat-preserving system by the control system to heat when the temperature is lower than the set temperature by 1 ℃;

meanwhile, the control system automatically calculates the using amount of each powder according to the set mixing ratio, the conveying system conveys each powder into a stirrer I of the dry mixing and stirring system for stirring, the temperature in the stirrer I is measured during stirring, the temperature in the stirrer I is ensured to be 35-45 ℃, and the temperature adjusting precision is +/-1 ℃;

s4, conveying the mixed powder into a stirrer II by using a conveying system, automatically calculating the using amount of each additive by using a control system according to a set mixing ratio, adding each additive into the stirrer II by using the conveying system according to the calculated using amount to stir, measuring the pot body temperature of the stirrer II and the temperature of the stirred mixture during stirring, ensuring that the temperature is adjustable between 35 and 45 degrees, adjusting the temperature to +/-1 ℃ with the temperature adjusting precision, and stopping heating and preserving heat when the temperature of the mixture reaches a set temperature;

s5, opening a discharging valve of the stirrer II, discharging the stirred slurry from the stirrer II of the material wet-mixing stirring system into a feed inlet of the constant-temperature conjoined spiral mixer, and simultaneously controlling a foaming system to spray a foaming agent by a control system, wherein the spraying pressure of the foaming agent can be adjusted as required, the control system automatically controls and ensures the spraying time and the instantaneous spraying flow rate of the foaming agent to be consistent with the discharging slurry state of the stirrer according to the total material amount and the discharging speed in the stirrer II, namely the mixing proportion of the slurry and the foaming agent is kept to be the same, and the synchronous control system controls the constant-temperature conjoined spiral mixer to operate to ensure that the material and the foaming agent are uniformly mixed; meanwhile, according to the action time of a discharge valve of the stirrer II, the control system controls the spraying opening of the foaming agent and the opening of the constant-temperature conjoined spiral mixer, so that all materials are output simultaneously, the flush and tail alignment are ensured, and the linear proportional relation between the spraying flow of the foaming agent and the flow of the mixture is ensured;

s6, uniformly mixing the slurry with a foaming agent, dropping the slurry into a heat-preservation mold box, and standing for foaming for 10-45S to obtain a finished product.

As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, a foaming device for a foamed concrete wallboard comprises a frame 1, wherein a material dry-mixing stirring system 2, a material wet-mixing stirring system 3, a heating and heat-preserving system 4, a conveying system 5, an additive system 6, a foaming system 7 and a control system 8 are arranged on the frame 1; the heating and heat-preserving system 4 comprises all the heating and heat-preserving devices 41 and heater components in all the systems; the conveying system 5 comprises all conveying devices and components in all the systems; the additive system 6 comprises all additive devices and components in all the systems, and the additive devices comprise additive storage tanks, additive pumps and additive metering bins; the foaming system 7 comprises a spraying device 71 and a foaming device; the control system 8 is connected to all other systems mentioned above and controls the execution of the actions of its devices.

The material dry mixing and stirring system 2 comprises a stirrer I21, a powder bin 22 and a powder metering bin 23, the powder bin 22 and the powder metering bin 23 can be arranged in a plurality according to actual needs, the conveying system 5 comprises a screw conveyer 51 and an elevator hopper 52, a feed inlet at one end of the screw conveyer 51 is connected with a feed outlet of the powder bin 22, a feed outlet at the other end is connected with a feed inlet of the powder metering bin 23, the screw conveyer 51 conveys powder in the powder bin 22 into the powder metering bin 23, the feed outlet of the powder metering bin 23 is connected with a feed inlet of the stirrer I21, and a feed outlet of the stirrer I21 is connected with a feed inlet of the elevator hopper 52. If the external temperature difference increases, the outside of elevator bucket also can set up heating heat preservation device in order to avoid heat loss too fast, the powder gets into in mixer I21 by powder measurement storehouse 23 and stirs in advance, the grit of fine particle, cement, various powder such as fly ash are through dry mixing with more easy mix even, do not conglomerate, then carry to material wet mixing system 3 through elevator bucket 52, the agitator kettle outside of mixer I21 is provided with heating heat preservation device 41, heating heat preservation device 41 includes zone of heating 411 and heat preservation 412, the agitator kettle outside is hugged closely to zone of heating 411, the heat preservation 412 is being wrapped up in the outside of zone of heating 411, pack heating oil or heat pipe and connect heater I44 in zone of heating 41, the agitator kettle outside of mixer I21 still is provided with temperature sensor I24 that is used for detecting the temperature in the zone of heating 411, heater I44 and I24 equal electric connection control system 8 of temperature sensor.

The material wet stirring system 3 comprises a stirring machine II 31, wherein a feed inlet of an additive metering bin 61 is formed in the stirring machine II 31, a feed inlet of a water metering bin 62 is formed in the stirring machine II 31, the additive metering bin 61 is connected with an additive pump 612 and an additive storage tank 613, valves are arranged on a plurality of feed inlets, the valves are electrically connected with a control system 8, a guide chute 37 is further arranged on the stirring machine II 31, a gate valve 36 can be arranged at the feed inlet of the guide chute 37 according to actual requirements, the guide chute 37 is communicated with a lifting bucket 52, a discharge opening 38 is formed in the bottom of the stirring machine II 31, a butterfly valve 39 is arranged at the discharge opening 38, the butterfly valve 39 is electrically connected with the control system 8, the size of the discharge opening can be controlled according to requirements, a heating and heat preservation device 41 is arranged on the outer side of a stirring pot 311 of the stirring machine II 31, the heating and heat preservation device 41 comprises a heating layer 411 and a heat preservation layer 412, the heating layer 411 is tightly attached to the outer side of the stirring pot 311, the heating layer 411 is wrapped by the heat preservation layer 412, heating oil or a heat pipe filled in the heating layer 411, an inlet and an outlet of the heating layer 411 is arranged, the heating oil or a heat pipe filled in the heating layer 411, an inlet of the heating layer is connected with a heater 45, a temperature sensor II 313, the heating layer 311, the temperature sensor 313, the temperature sensor for detecting device for detecting system for detecting the stirring pot 311, and the temperature sensor for detecting device for detecting system for detecting the temperature detecting device for detecting the stirring pot 311, the temperature of the stirring machine II system for detecting the stirring pot 311, the stirring machine II.

The temperature control device 312 comprises a guide rail 3121, a power device 3122 and a temperature sensor III 3124, the guide rail 3121 is fixedly welded on the outer side of the side wall of the stirring pot 311, the power device 3122 is fixedly connected on the guide rail 3121 through bolts, the temperature sensor III 3124 is used for detecting the temperature of the material in the stirring pot 311, the temperature sensor 3124 can be fixed on a support through bolts, the support is provided with a chute which can be sleeved on the guide rail 3121, and simultaneously the support is provided with a screw hole, the power device 3122 is connected with the screw hole on the support through a screw rod, when the power device 3122 rotates forward and reversely, the support is driven by the screw rod to slide on the guide rail 3121 in a reciprocating manner, and further the temperature sensor III 3124 is driven to slide in a reciprocating manner along the guide rail 3121 to approach and keep away from the detected material, the power device 3122 adopts a servo motor, the control is more accurate, the temperature control device 312 further comprises a guide ring 3125 and an elastic rubber sleeve 3124, the guide ring 3125 penetrates through and is fixed on the pot wall of the stirring pot 311, the outer circle of the guide ring 3125 is fixedly and hermetically connected with the wall of the stirring pot 311 through welding, the inner hole of the guide ring 3125 penetrates through the inside and outside of the stirring pot 311, the probe of the temperature sensor III 3124 is matched with the inner hole of the guide ring 3125, which not only ensures that the material in the stirring pot 311 cannot escape outwards through the inner hole of the guide ring 3125, but also ensures that the probe of the temperature sensor III 3124 can flexibly go deep and far away from the material to be tested in the stirring pot 311 along the inner hole of the guide ring 3125, measures the precise temperature parameter of the material to be tested in the stirring pot 311, and at the same time, the elastic rubber sleeve 3124 is sleeved on the probe of the temperature sensor III 3124, which can avoid the damage caused by the direct collision of the temperature sensor III 3124 on the stirring pot 311, can also keep the probe of the temperature sensor III 3124 clean, and can slide smoothly in the inner hole of the guide ring 3125, the measured data distortion caused by falling dust, sundries and the like is avoided, and the accuracy of measurement is ensured; temperature control device 312 structure scientific and reasonable, nimble convenient, adaptability is good, can effectively reduce because of the temperature detects the accurate product rejection rate height that leads to the fact, the many scheduling problems of later stage internal defect.

The stirring machine II 31 is a vertical stirring machine, the upper part of a stirring pot 311 of the stirring machine II 31 is cylindrical, the lower part of the stirring pot 311 of the stirring machine II 31 is conical, two stirring shafts are arranged inside the stirring pot 311 of the stirring machine II 31 and respectively comprise a high-speed shaft 312 and a low-speed shaft 313, a plurality of blades are respectively sleeved on the high-speed shaft 312 and the low-speed shaft 313 and can be fixed on the high-speed shaft 312 and the low-speed shaft 313 through welding or screws, a driving device 34 is arranged outside the stirring machine II 31, the output end of the driving device 34 is respectively connected with the high-speed shaft 312 and the low-speed shaft 313 through connecting pieces such as a coupler and the like, the rotating speed of the low-speed shaft 313 is low, the rotating speed of the low-speed shaft 313 is not higher than 300r/min, the blades are driven to enable material flow to generate circumferential flow, efficient large-cycle stirring is carried out, the rotating speed of the high-speed shaft 312, the rotating speed of the high-speed shaft 312 is not lower than 900r/min and not higher than 1450r/min, the blades are driven to enable the material flow to generate axial high-speed flow, the fixed circulation track of the stirring material flow is changed, speed difference is formed, high shearing and diffusion can be effectively carried out on the stirring material, the whole homogeneity of stirring is improved, the blades of the high-speed shaft and the blades of the low-speed shaft are arranged along the axial direction of the stirring pot 311 in a staggered mode, the material flows with various speeds can be generated in different areas, the stirring uniformity is improved, meanwhile, the angles of the stirring blades at the lowest parts of the blades of the high-speed shaft and the blades of the low-speed shaft are opposite to those of the stirring blades at the upper part, the material flow direction of the bottom of the stirring pot 311 can be thrown upwards during stirring, the stirring convection is faster and more uniform, and the stirring efficiency is improved; the vertical spoilers 314 are arranged on the cylindrical portion of the stirring pot 311, at least 2 spoilers 314 are arranged, the spoilers 314 are uniformly distributed around the center of the stirring pot 311, the spoilers 314 are of a trapezoidal structure, the long straight edges of the spoilers 314 are fixedly connected to the inner side wall of the stirring pot 311 through welding or screws, one side, close to the center of the stirring pot 311, of each spoiler 314 is gradually narrowed from top to bottom, the upper portion of each spoiler is wide, the lower portion of each spoiler is narrow, cutting and material flow disturbance in different areas in the axial direction of the stirring pot 311 are facilitated, the stirring effect is improved, meanwhile, the upper portion of each spoiler 314 is wide, materials can be guided to run downwards, large-cycle stirring is facilitated, the stirring efficiency is improved, a plurality of disturbance flow holes are formed in each spoiler 314, the spoilers are long circular through holes, the spoilers are sequentially arranged from top to bottom in the width direction of the spoilers 314, when the materials pass through the disturbance flow holes, the phenomena of extrusion, crushing, exchange, dispersion and the like occur when the materials pass through the spoilers 314, the material agglomeration is reduced, the material utilization rate is improved, meanwhile, the spoiler arrangement can not only change the spoiler 314, but also further improve the stirring track uniformity of the stirring efficiency and the bottom uniformity of the stirring pot 311 and the stirring efficiency of the stirring pot.

The feed inlet of an additive metering bin 61 in the additive system 6 is connected with an additive storage tank 613 through an additive pump 612, a control system 8 controls an additive pumping device to pump an additive from the additive storage tank to the additive metering bin 61, the additive can be made to be multiple, the feed inlet of a water metering bin 62 is connected with a hot water storage tank 624 through a water pump 623, an electric heating pipe is arranged in the hot water storage tank, the control system 8 controls the electric heating pipe to heat water in the hot water storage tank, the control system 8 controls the water pump to pump hot water in the hot water storage tank to the water metering bin 62, a temperature sensor IV 621 is arranged on the water metering bin 62 and used for detecting the temperature of the water in the water metering bin 62, at least one electric heating pipe 622 is further arranged on the side part and the bottom part of an inner cavity of the water metering bin 62 and used for heating the water metering bin 62, the temperature sensor IV 621 and the electric heating pipe 622 are both electrically connected with the control system 8, and the control system 8 ensures that the temperature error of the water entering the wet mixing and stirring system 3 is not more than 1 ℃ according to a set temperature.

The conveying system 5 further comprises a constant-temperature conjoined spiral mixer 53, the constant-temperature conjoined spiral mixer 53 comprises a shell 531, a spiral rotating shaft 532, a mixing shaft 533, a feeding port 534 and a discharging port 535, the feeding port 535 is arranged at the middle position above the shell 531, the discharging port 535 is arranged at the bottom of the shell 531 and is in an open state, the spiral rotating shaft 532 and the mixing shaft 533 are arranged in the shell 531, the mixing shaft 533 is arranged below the spiral rotating shaft 532, mixing blades 5331 are welded on the mixing shaft 533 in a staggered and uniform distribution manner, the mixing blades 5331 are in a U-shaped structure, a spiral blade is arranged on the spiral rotating shaft 532, the spiral blade is a bidirectional spiral, a spiral blade I5321, a spiral blade II 5322, a spiral blade III 5323 and a spiral blade IV 5324 are continuously arranged from the middle position of the spiral rotating shaft 532 to two ends, wherein the rotating directions of the spiral blade I5321 and the spiral blade IV 5324 are in a left-turn mode, the rotating directions of the spiral blades II 5322 and the spiral blades III 5323 are right-handed, the spiral blades I5321 and the spiral blades III 5323 are arranged on the same side, the spiral blades II 5322 and the spiral blades IV 5324 are arranged on the other side, one end of a spiral rotating shaft 532 extends out of a shell 531 to be connected with a driving motor 536, the other end of the spiral rotating shaft 532 extends out of the shell 531 to be connected with a chain wheel 537, the other end of the chain wheel 537 is connected with a mixing shaft 533, the driving motor 536 drives the spiral rotating shaft 532 to rotate, the mixing shaft 533 is driven by the chain wheel 537 to rotate simultaneously, the driving motor 536 is electrically connected with a control system 8, a heating and heat-preserving device 41 is arranged on the outer side of the shell 531, a heating layer 411 in the heating and heat-preserving device 41 is tightly attached to the outer side of the shell 531, an insulating layer 412 is wrapped on the outer side of the heating layer 411, the heating layer 41 is filled with heating oil or heat pipes, an inlet and an outlet are arranged on the heating layer 411, the heating oil or heat pipes filled in the heating layer 41 are connected with a heater III 46 through the heating layer 411, be equipped with temperature sensor V539 that is used for detecting the temperature in the zone of heating 411 on the casing 531, temperature sensor V539 and the equal electric connection control system 8 of heater III 46, still be provided with a plurality of nozzles 538 on the casing 531 of feed inlet 534 department, nozzle 538 and the inside intercommunication of casing 531, the injection direction and the concrete material flow of nozzle fall the direction unanimously, the pipeline that nozzle 538 is connected with foaming system 7 in sprinkler 71's the gas bag 715 intercommunication, can adjust the pressure of nozzle as required, the gas bag external connection has the air compressor machine.

The spraying device 71 in the foaming system 7 further comprises a foaming agent storage tank 711, a pipeline 712, a pump 713 and a foaming agent metering bin 714, the foaming agent storage tank 711 pumps the foaming agent into the foaming agent metering bin 714 through the pipeline 712 through the pump 713, the foaming agent metering bin 714 uniformly sprays the metered foaming agent into the constant-temperature conjoined spiral mixer 53 through a nozzle 538 under the action of high-pressure air in an air bag 715, and meanwhile, the foaming agent and the mixture are fully mixed and stirred under the conveying and stirring of the spiral rotating shaft 532 and the stirring shaft 533, so that the foaming quality is improved.

The foaming device in the foaming system 7 is a heat-insulating mold box 72, the heat-insulating mold box 72 is arranged below a discharge port 535 of the constant-temperature conjoined spiral mixer 53, the heat-insulating mold box 72 is arranged on a track 8, wheels 721 matched with the track 8 are arranged on the heat-insulating mold box 72, the wheels 721 are connected with a driving device, the driving device is electrically connected with a control system 8, the control system 8 controls the wheels 721 to realize that the heat-insulating mold box 72 slides on the track 8, a heating and heat-insulating device 41 is arranged outside the heat-insulating mold box 72, the heating and heat-insulating device 41 preheats and insulates the heat-insulating mold box 72, temperature sensors VI 722 are arranged outside and at the bottom of the heat-insulating mold box 72 and are electrically connected with the control system 8 for detecting the temperature of the heat-insulating mold box 72, when a mixture enters the heat-insulating mold box 72, the proper and constant temperature in the heat-insulating mold box 72 is ensured to promote the mixture to foam, the foaming effect is better, the product rejection rate can be obviously reduced, and the internal defects in the later period can be reduced. According to actual needs, a formed steel reinforcement mesh cage can be fixedly arranged in the heat preservation box 72.

Heating heat preservation system 4 still includes heat preservation room 42, constant temperature disjunctor spiral mixer 53 all sets up in heat preservation room 42 with heat preservation mold box 72, it is lost to reduce the heat, improve heat utilization rate, heat preservation room 42 is equipped with the door 43 that passes through when heat preservation mold box 72 slides, door 43 electricity connection control system 8, when heat preservation mold box 72 advances, when going out heat preservation room 42, 8 control doors 43 of control system open or close, can also set up the lamp source in the heat preservation room, a weighing sensor and a temperature sensor, exhaust fan and surveillance camera head, can see concrete foaming state and foaming temperature at any time.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (12)

1. A preparation process of foamed concrete is characterized by comprising the following steps: the method comprises the following steps:

s1, starting a power supply, checking whether the state of each device is normal, and inputting the mixing proportion, the yield and the set temperature of the foamed concrete on a control system;

s2, starting a heating and heat-preserving system, heating the material dry-mixing and stirring system, the material wet-mixing and stirring system, the constant-temperature conjoined spiral mixer, the heat-preserving mold box and the hot water storage tank, stopping heating and keeping constant temperature when the temperature reaches a set temperature, and controlling the system to automatically start the heating and heat-preserving system to heat when the temperature is lower than the set temperature by 1 ℃;

s3, closing a discharge valve of a stirrer II of the material wet mixing and stirring system, starting a water pump, conveying water into a water metering bin from a hot water storage tank, automatically calculating the water consumption by a control system according to a set mixing ratio, stopping the water pump when the conveyed water reaches the required consumption, feeding the water in the water metering bin into the stirrer II to stir and moisten the kettle, stopping stirring after the stirring time is more than or equal to 3S, keeping the water in the kettle body at a constant temperature, and automatically starting a heating and heat-preserving system by the control system to heat when the temperature is lower than the set temperature by 1 ℃;

meanwhile, the control system automatically calculates the using amount of each powder according to the set mixing ratio, the conveying system conveys each powder into a stirrer I of the dry mixing and stirring system for stirring, the temperature in the stirrer I is measured during stirring, the temperature in the stirrer I is ensured to be 35-45 ℃, and the temperature adjusting precision is +/-1 ℃;

s4, conveying the mixed powder into a stirrer II by using a conveying system, automatically calculating the using amount of each additive by using a control system according to a set mixing ratio, adding each additive into the stirrer II by using the conveying system according to the calculated using amount to stir, measuring the pot body temperature of the stirrer II and the temperature of the stirred mixture during stirring, ensuring that the temperature is adjustable between 35 and 45 degrees, adjusting the temperature to +/-1 ℃ with the temperature adjusting precision, and stopping heating and preserving heat when the temperature of the mixture reaches a set temperature;

s5, opening a discharge valve of the stirring machine II, discharging the stirred mixture from the stirring machine II and feeding the mixture into a feed inlet of the constant-temperature conjoined spiral mixer, and simultaneously controlling a foaming system to spray a foaming agent by a control system, wherein the spraying pressure of the foaming agent can be adjusted as required, the control system automatically controls and ensures the spraying time of the foaming agent, the instantaneous spraying flow and the discharging slurry state of the stirring machine to be consistent according to the total material amount and the discharging speed in the stirring machine II, namely the mixing proportion of the slurry and the foaming agent is kept to be the same, and the synchronous control system controls the constant-temperature conjoined spiral mixer to operate to ensure that the material and the foaming agent are uniformly mixed; meanwhile, according to the action time of a discharge valve of the stirrer II, the control system controls the spraying opening of the foaming agent and the opening of the constant-temperature conjoined spiral mixer, so that all materials are output simultaneously, the flush and tail alignment are ensured, and the linear proportional relation between the spraying flow of the foaming agent and the flow of the mixture is ensured;

and S6, uniformly mixing the slurry with a foaming agent, dropping the slurry into a heat-preservation mold box, and statically foaming for 10-45S to obtain a finished product.

2. The apparatus according to claim 1, wherein the apparatus comprises: the device comprises a rack, wherein a material dry-mixing stirring system, a material wet-mixing stirring system, a heating and heat-insulating system, a conveying system, an additive system, a foaming system and a control system are arranged on the rack;

the heating and heat-preserving system comprises all heating and heat-preserving devices and components in all the systems, and each heating and heat-preserving device comprises a heater, a heating layer and a heat-preserving layer;

the conveying system comprises all conveying devices and components in all the systems;

the additive system comprises all additive devices and components in all the systems, and each additive device comprises an additive storage tank, an additive pump and an additive metering bin;

the foaming system comprises a spraying device and a foaming device;

the control system is connected with all other systems and controls the action execution of the devices;

the mixture of the material dry mixing and stirring system is conveyed to the material wet mixing and stirring system by the conveying system for mixing, then is conveyed by the conveying system, is uniformly sprayed by the spraying device while being sprayed with the foaming agent, and then enters the foaming device to complete the foaming process.

3. The apparatus for preparing foamed concrete according to claim 2, characterized in that: the material dry mixing stirring system comprises a stirrer I, a powder bin and a powder metering bin, the conveying system comprises a screw conveyer and an elevator bucket, one end of the screw conveyer is connected with the powder bin, the other end of the screw conveyer is connected with the powder metering bin, a discharge hole of the powder metering bin is connected with a feed inlet of the stirrer I, a discharge hole of the stirrer I is connected with the elevator bucket, the outer side of a stirring pot of the stirrer I is provided with the heating and heat-insulating device, a heating layer is connected with a heater I, and a temperature sensor I for detecting the temperature in the heating layer is arranged on the stirrer I.

4. A foamed concrete preparation apparatus according to claim 3, characterized in that: the wet mixing system of material includes mixer II, be provided with on the mixer II with the liquid material feed inlet that additive measurement storehouse and water measurement storehouse correspond, still be provided with baffle box and discharge opening on the mixer II, the lift bucket with the baffle box links to each other, the discharge opening department of mixer II is provided with the butterfly valve, the agitator kettle outside of mixer II sets up heating heat preservation device, the temperature control device who is used for detecting material temperature in the agitator kettle with be used for detecting the temperature sensor II of heating in situ temperature, the zone of heating links to each other with heater II.

5. The apparatus for preparing foamed concrete according to claim 4, characterized in that: the stirring machine II is a vertical stirring machine, the upper part of a stirring pot of the stirring machine II is cylindrical, the lower part of the stirring pot of the stirring machine II is conical, two stirring shafts are arranged in the stirring pot of the stirring machine II and are respectively provided with a high-speed shaft and a low-speed shaft, the rotating speed of the high-speed shaft is not lower than 900r/min, a plurality of blades are respectively sleeved on the low-speed shaft and the high-speed shaft, the blade angle at the lowest part of the low-speed shaft and the high-speed shaft is opposite to that of the upper blades, evenly be provided with spoiler and vortex pole in the agitator kettle of mixer II, the spoiler sets up on the agitator kettle cylindrical section's of mixer II lateral wall, the spoiler just is equipped with the vortex hole for trapezium structure, the vortex pole sets up on the agitator kettle conical section's of mixer II lateral wall, the spoiler with vortex pole dislocation set.

6. A foamed concrete preparation apparatus according to claim 4, characterized in that: temperature control device includes guide rail, guide ring, elastic rubber cover, power device and is used for detecting the temperature sensor III of material temperature in the mixer II, the guide rail with mixer II links to each other, the guide ring run through and link firmly in the jar wall in the mixer II, temperature sensor III's probe runs through elastic rubber cover and with the hole cooperation of guide ring, temperature sensor III is in follow under power device's the drive the guide rail reciprocates and slides.

7. The apparatus for preparing foamed concrete according to claim 4, characterized in that: the temperature sensor IV is arranged outside the water metering bin, at least one electric heating pipe is arranged on the side part and the bottom of an inner cavity of the water metering bin, and the control system ensures that the temperature error of water entering the material wet mixing and stirring system is not more than 1 ℃ according to the set temperature.

8. The apparatus for preparing foamed concrete according to claim 4, characterized in that: conveying system still includes constant temperature disjunctor spiral mixer, constant temperature disjunctor spiral mixer includes casing, spiral rotation axis, stirring axle, feed inlet and discharge gate, spiral rotation axis with stirring axle sets up in the casing, stirring axle sets up the below of two-way spiral rotation axis just stirring epaxial dislocation equipartition is provided with the stirring blade, be provided with helical blade on the spiral rotation axis, helical blade is two-way spiral and sets up to both ends in succession from the intermediate position, the feed inlet sets up casing top intermediate position, the discharge gate sets up casing bottom and uncovered setting, spiral rotation axis one end is stretched out the casing links to each other with driving motor, and the other end stretches out the casing links to each other with the sprocket, stirring axle with the sprocket links to each other, the lateral wall of casing is provided with heating heat preservation device is provided with temperature sensor V on the heating heat preservation device, the zone of heating with heater III links to each other, the feed inlet department be provided with the nozzle on the casing.

9. The apparatus for preparing a foamed concrete according to claim 8, characterized in that: the spiral blade is followed spiral rotation axis intermediate position is provided with helical blade I, helical blade II, helical blade III, helical blade IV to both ends in succession, wherein helical blade I, helical blade IV's the direction of turning is the levogyration, helical blade II, helical blade III's the direction of turning is the dextrorotation, just helical blade I helical blade III sets up in same one side, helical blade II helical blade IV sets up in the opposite side.

10. The apparatus for preparing foamed concrete according to claim 8, characterized in that: foaming device is heat preservation moulding box, the heat preservation moulding box sets up constant temperature disjunctor spiral mixer the discharge gate below, the heat preservation moulding box sets up on the track, the heat preservation moulding box be provided with track complex wheel can slide on the track, the heat preservation moulding box outside is provided with heating heat preservation device, the zone of heating with heater IV links to each other, the last temperature sensor VI that is provided with of heating device.

11. The apparatus for preparing foamed concrete according to claim 10, characterized in that: the heating and heat-insulating system further comprises a heat-insulating chamber, the constant-temperature conjoined spiral mixer and the heat-insulating mould box are arranged in the heat-insulating chamber, and the heat-insulating chamber is provided with a door through which the heat-insulating mould box slides.

12. The apparatus for preparing foamed concrete according to claim 8, characterized in that: the spraying device comprises a foaming agent storage tank, a pipeline, a pump, a foaming agent metering bin and an air bag, wherein the foaming agent storage tank is connected with the pump, the pump is connected with the foaming agent metering bin through the pipeline, the foaming agent metering bin is connected with the air bag, and the nozzle is connected with the air bag.

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