CN215282694U - High-speed pre-dispersed silica mortar preparation system for concrete - Google Patents
High-speed pre-dispersed silica mortar preparation system for concrete Download PDFInfo
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- CN215282694U CN215282694U CN202022257327.0U CN202022257327U CN215282694U CN 215282694 U CN215282694 U CN 215282694U CN 202022257327 U CN202022257327 U CN 202022257327U CN 215282694 U CN215282694 U CN 215282694U
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Abstract
The utility model discloses a high-speed predispersion silica mortar preparation system for concrete, the export of silica fume measurement storehouse and dispersion liquid measurement storehouse is respectively through unloading valve A, unloading valve B communicates high-speed dispersion devices, the bottom of high-speed dispersion devices is equipped with the mortar valve, the mortar valve communicates 1# mortar pump, 1# mortar pump pipeline end passes through the slurry conveyer pipe and communicates with the temporary storage tank, the temporary storage tank bottom is equipped with 2# solenoid valve, the output of 2# solenoid valve communicates 2# mortar pump, the output of 2# mortar pump respectively with have the pipeline connection high-speed dispersion devices and silica fume slurry measurement of mud return valve and mortar measurement valve weigh; a slurry blanking valve is arranged below the silica mortar weigher and is communicated with the concrete mixer through a pipeline. The system can accomplish to measurement batching, dispersion preparation, temporary storage, filling, feed back feed supplement of silica fume in the dispersion, has solved the big problem of concrete mixing system and silica fume slurry disperse system work beat difference, realizes the accurate continuous production preparation of high-speed predispersion silica fume slurry concrete.
Description
Technical Field
The utility model belongs to the technical field of the application of the supplementary cementitious material of high activity-silica fume in the building material, concretely relates to silica fume slurry body material is in the concrete, especially in early strong, evaporate a high-speed predispersion silica mortar preparation system and the operation method who uses in curing the concrete.
Background
The silicon ash is produced in the ore-smelting electric furnace when smelting ferrosilicon and industrial silicon (metallic silicon)iO2And SiThe gas is formed by quick oxidation, condensation and precipitation with air after being discharged. The average particle size of the silica fume is 0.1-1 mu m, the silica fume is 1/50-1/100 of ordinary cement particles, and the specific surface area is 15000-25000m 2/kg. The main component is amorphous silicon dioxide, the content of which is more than 85 percent, and the chemical component and the granularity of the silica fume determine that the silica fume is a high-activity pozzolanic admixture, so the additive has a plurality of beneficial effects on the macroscopic mechanical property and the durability of cement and concrete, and has been widely researched and applied.
However, silica fume has a problem in practical use, which is mainly manifested in that the bulk density of the non-encrypted raw silica fume subjected to dust collection is 100 to 200kg/m3The fly ash is in a loose powder state and is easy to fly, and the characteristic brings great difficulty to the transportation, storage and metering of the original-state silica fume. Therefore, most of the silica fume in the current engineering application is the silica fume which is formed by processing the original silica fume by special encryption equipment by using compressed air and is agglomerated particles at the micron level or even the millimeter level.
The encrypted silica fume solves the transportation and use problems caused by too low density of the original-state silica fume, but also causes the problem of higher agglomeration of the encrypted silica fume compared with the original-state silica fume, and the agglomerates are often difficult to be effectively dispersed in the conventional cement concrete preparation process. Silica fume agglomerates often adsorb water and additives, resulting in reduced workability and increased workability loss of concrete. After the concrete is hardened, the partially enriched coarse particle aggregate can gradually react with hydration products, such as calcium hydroxide, and the like to continuously react with alkali silicate, so that expansion cracking is caused, and the long-term strength and durability of the concrete are further influenced.
Therefore, the encrypted silica fume is pre-dispersed and then added into the concrete, so that the problem of silica fume transportation can be solved, and the problem of silica fume dispersion in the concrete can be solved. However, the difference between the time beat of the current high-speed dispersion process and the production beat of concrete is large, and the continuous normal production of concrete is difficult to meet.
On the other hand, even if the micro silica fume particles after high-speed dispersion and dissociation are left to stand for a long time (generally 0.5-7d according to different surfactants) under the action of the dispersing agent, part of the silica fume particles with higher surface energy can be agglomerated again, so that the prepared silica fume concrete has poor early activity, the workability is reduced, and the workability loss is slightly increased. Therefore, in order to ensure continuous and stable production of the pre-dispersed silica mortar, the silica mortar which has been dispersed and left standing for a long time needs to be dispersed for the second time and then enter the concrete.
Meanwhile, as the volume density of the silica fume is lower and the specific surface is larger, the silica fume is easy to agglomerate in the conveying process of a reamer in a screw conveyor, and the condition of larger silica fume measurement deviation exists, the fluctuation of the water content of the silica fume is larger, and the accuracy of the pre-dispersed silica fume concrete mixing ratio is influenced.
SUMMERY OF THE UTILITY MODEL
Therefore, in order to solve the above-mentioned deficiency, the utility model provides a high-speed pre-dispersion silica mortar preparation system and operation method for concrete herein, can effectively solve present concrete mixing system and high-speed pre-dispersion silica mortar disperse system beat difference big, but the dispersed high-speed pre-dispersion silica mortar that stews for a long time in granule reunion, the undulant great scheduling problem of silica mortar moisture content, realize that high-speed pre-dispersion silica mortar concrete is continuous, stable, accurately production preparation.
The utility model is realized by constructing a high-speed pre-dispersed silicon mortar preparation system for concrete, which is characterized in that; the system comprises: the system comprises a silica fume measuring bin, a dispersion liquid measuring bin, a high-speed dispersing device, a No. 1 mortar pump, a temporary storage tank, a No. 2 mortar pump, a silica fume measuring scale and a silica fume preparation system automatic controller; a discharge valve A is arranged below the silica fume measuring bin, a discharge valve B is arranged below the dispersion liquid measuring bin, outlets of the silica fume measuring bin and the dispersion liquid measuring bin are respectively communicated with a high-speed dispersing device through the discharge valve A and the discharge valve B, a mortar valve is arranged at the bottom of the high-speed dispersing device, the mortar valve is communicated with a 1# mortar pump, the tail end of a 1# mortar pump pipeline is communicated with a temporary storage tank through a slurry conveying pipe, a 2# electromagnetic valve is arranged at the bottom of the temporary storage tank, the output end of the 2# electromagnetic valve is communicated with a 2# mortar pump, and the output end of the 2# mortar pump is respectively connected with a high-speed dispersing device and a silica fume measuring scale through a pipeline with a slurry return valve and a mortar metering valve; a slurry discharge valve is arranged below the silica mortar weigher and is communicated with the concrete mixer through a pipeline, and the components are connected with an automatic controller of the silica mortar preparation system through signal lines.
The utility model relates to a high-speed predispersion silica mortar preparation system for concrete, which is characterized in that; the mortar temporary storage tank is provided with a silica mortar density and water content detection and signal transmission device, a silica mortar slow stirring device, a stirring paddle and a silica mortar level meter.
The utility model relates to a high-speed predispersion silica mortar preparation system for concrete, which is characterized in that; and the silica mortar density and water content detection and signal transmission device transmits the density and water content signals to the automatic controller of the silica mortar preparation system and the batching system of the mixing plant, and is used for judging whether the silica mortar water content is qualified or not and accurately calculating the silica mortar dosage under the specified silica mortar dosage and deducting the water consumption of the concrete production mixing proportion.
The utility model relates to a high-speed predispersion silica mortar preparation system for concrete, which is characterized in that; and the silicon mortar level meter transmits the level signal to the automatic controller of the silicon mortar preparation system and the concrete stirring system for judging whether to prepare silicon mortar and produce concrete.
The utility model relates to a high-speed predispersion silica mortar preparation system for concrete, which is characterized in that; the automatic controller of the silica mortar preparation system is used for completing the preparation of silica mortar according to the set proportion and the control parameter control of stirring, monitoring the density and the moisture content of the silica mortar, detecting a signal transmission device, judging whether the silica mortar is fed back or supplemented with materials and is dispersed again according to the moisture content and the material level data fed back by the silica mortar level meter and the time parameter of system operation, judging whether the next disc of silica mortar is prepared and filled into the silica mortar temporary storage tank, recording, inquiring and exporting the mortar batching data, the moisture content data and the fed back material data.
The utility model relates to a high-speed predispersion silica mortar preparation system for concrete, which is characterized in that; the high-speed dispersing device comprises a high-speed jet cavitation dispersing device, the maximum flow speed of the slurry is not lower than 14m/s, a cavitation dispersing effect is formed, and dissociation and dispersion of the silica fume aggregate are realized; the high-speed dispersing device is also provided with a high-speed motor with a variable-frequency controller, the rotating speed of the dispersing blades can be increased from 0 to a constant rotating speed within 5-60 s, the constant rotating speed is 500-20000r/min, the shearing speed of the blades is higher than 20m/s, the shearing speed of the blades and the blades is higher than 14m/s, and the time of the constant rotating speed is 0.5-10 min.
The utility model relates to a high-speed predispersion silica mortar preparation system for concrete, which is characterized in that; the high-speed dispersing device is a single shaft or multiple shafts, and each shaft is a single blade or multiple blades.
The utility model has the advantages of as follows: the utility model provides a high-speed predispersion silica mortar preparation system and an operation method for concrete, the system comprises a silica fume measuring bin, a dispersion liquid measuring bin, a high-speed dispersing device, a 1# mortar pump, a temporary storage tank, a 2# mortar pump, a silica fume measuring scale and an automatic controller of the silica fume preparation system; the problems that the working beat difference of the existing concrete stirring system and the high-speed pre-dispersed silica mortar dispersing system is large, particles in the dispersed and long-time standing high-speed pre-dispersed silica mortar agglomerate, the fluctuation of the water content of the silica mortar is large and the like can be effectively solved, and the continuous, stable and accurate production and preparation of the high-speed pre-dispersed silica mortar concrete are realized. The utility model discloses still have following beneficial effect:
1. through setting up high-speed predispersion silica fume thick liquid jar of keeping in to utilize reasonable control system and control parameter, can effectively solve current concrete mixing system beat and the big problem of high-speed predispersion silica fume thick liquid disperse system beat difference.
2. Through setting up pre-dispersion mortar feed back device, combine control system and parameter setting, carry out the secondary dispersion to the particle agglomeration in the high-speed pre-dispersion silica mortar that has dispersed but for a long time stews, solve the concrete negative effects that long time stews and reunite the silica mortar body and bring.
3. The water content of the pre-dispersed mortar is set for detection, the water content data is directly accessed into a mixing station mix proportion control system to recalculate the production mix proportion according to a measured value, or the silica fume with large fluctuation of the water content of the silica fume is secondarily blended through a feed back and feed supplement device and a control mechanism when the fluctuation of the water content is large, the control system and parameter setting are combined, or the problem of the precision of the production mix proportion caused by the fluctuation of the water content of the silica fume is solved, and the continuous, stable and accurate production and preparation of the high-speed pre-dispersed silica fume concrete is realized.
Drawings
FIG. 1 is a schematic view of a system for preparing high-speed pre-dispersed silica mortar for concrete according to the present invention.
Wherein: a silica fume measuring bin 1, a discharge valve A1-1, a dispersion liquid measuring bin 2, a discharge valve B2-1, a high-speed dispersing device 3, a mortar valve 3-1, a slurry return valve 3-2, a high-speed motor 3-3, a high-speed jet cavitation dispersing device 3-4, a No. 1 mortar pump 4, a temporary storage tank 5, a No. 2 electromagnetic valve 5-1, a silica fume density and water content detection and signal transmission device 5-2, a silica fume slow stirring device 5-3, a stirring paddle 5-4, a silica fume level gauge 5-5, a No. 2 mortar pump 6, a silica fume measuring scale 7, a mortar metering valve 7-1, a slurry discharge valve 7-2, a silica fume preparation system automatic controller 8, a screw conveyor 9, a slurry conveying pipe 10, a liquid conveying pipe and control valve 11, a signal transmission stirrer and control line 12, and concrete 13, a weight sensor 14.
Detailed Description
The present invention will be described in detail with reference to the accompanying fig. 1, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a high-speed predispersion silica fume slurry preparation system for concrete through improvement, which has the following implementation process; a high speed pre-dispersed silica mortar preparation system for concrete, as shown in fig. 1, the system comprising: the system comprises a silica fume measuring bin 1, a dispersion liquid measuring bin 2, a high-speed dispersing device 3, a No. 1 mortar pump 4, a temporary storage tank 5, a No. 2 mortar pump 6, a silica fume measuring scale 7 and a silica fume preparation system automatic controller 8; a discharge valve A1-1 is arranged below the silica fume measuring bin 1, a discharge valve B2-1 is arranged below the dispersion liquid measuring bin 2, outlets of the silica fume measuring bin 1 and the dispersion liquid measuring bin 2 are respectively communicated with a high-speed dispersing device 3 through a discharge valve A1-1 and a discharge valve B2-1, a mortar valve 3-1 is arranged at the bottom of the high-speed dispersing device 3, the mortar valve 3-1 is communicated with a No. 1 mortar pump 4, the tail end of a pipeline of the No. 1 mortar pump 4 is communicated with a temporary storage tank 5 through a slurry conveying pipe, a No. 2 electromagnetic valve 5-1 is arranged at the bottom of the temporary storage tank 5, the output end of the No. 2 electromagnetic valve 5-1 is communicated with a No. 2 mortar pump 6, and the output end of the No. 2 mortar pump 6 is respectively connected with the high-speed dispersing device 3 and a silica fume measuring scale 7 through a pipeline with a slurry return valve 3-2 and a mortar measuring valve 7-1; a slurry discharge valve 7-2 is arranged below the silica mortar weigher 7 and is communicated with the concrete mixer through a pipeline, and the components are connected with an automatic controller 8 of the silica mortar preparation system through signal lines.
When the utility model is implemented; the mortar temporary storage tank 5 is provided with a silicon mortar density and water content detection and signal transmission device 5-2, a silicon mortar slow stirring device 5-3, a stirring paddle 5-4 and a silicon mortar level indicator 5-5.
When the utility model is implemented; and the silica mortar density and water content detection and signal transmission device 5-2 transmits the density and water content signals to the silica mortar preparation system automatic controller 8 and a mixing plant batching system, and is used for judging whether the silica mortar water content is qualified or not and accurately calculating the silica mortar dosage under the specified silica mortar dosage and deducting the water consumption of the concrete production mix proportion.
When the utility model is implemented; and the silica fume slurry level indicator 5-5 transmits the level signal to the automatic silica fume slurry preparation system controller 8 and the concrete stirring system, and is used for judging whether to prepare silica fume slurry and produce concrete.
When the utility model is implemented; the automatic controller 8 of the silica fume slurry preparation system is used for completing the preparation of silica fume slurry according to the set proportion and the control parameter control of stirring, monitoring the density and the moisture content of the silica fume slurry, detecting the signal transmission device 5-2, judging the moisture content and the material level data fed back by the silica fume slurry level gauge 5-5 and the time parameter of system work to judge whether to carry out material returning or material supplementing and re-dispersing on the silica fume slurry, judging whether to prepare the next silica fume slurry and fill the silica fume temporary storage tank, recording, inquiring and exporting the slurry batching data, the moisture content data and the material returning and material supplementing data.
When the utility model is implemented; the high-speed dispersing device 3 is provided with a high-speed motor 3-3 with a frequency conversion controller, and can realize that the rotating speed of the dispersing blades 3-4 is increased from 0 to a constant rotating speed within 5s-60s, the constant rotating speed is 500-20000r/min, the blade shearing rate is higher than 20m/s, the blade and blade shearing rate is higher than 14m/s, and the constant rotating speed time is 0.5-10 min.
When the utility model is implemented; the high-speed dispersing device is a single shaft or multiple shafts, and each shaft is a single blade or multiple blades.
When the utility model is implemented; the high-speed dispersing device 3 also comprises a high-speed jet cavitation dispersing device 3-4, the maximum flow speed of the slurry is not lower than 14m/s, a cavitation dispersing effect is formed, and dissociation and dispersion of the silica fume aggregate are realized.
The working principle of the specific embodiment is as follows: (1) the method comprises the steps of starting the equipment, respectively measuring silica fume and dispersion liquid according to input batching parameters, feeding to a high-speed dispersion machine, starting the high-speed dispersion machine to perform frequency conversion speed increase to a constant rotating speed (such as 3000 r/min) according to a rotating speed increasing system, maintaining the constant rotating speed for a certain time (such as 5 min), then reducing the speed to 0r/min, starting a mortar valve and a No. 1 mortar pump, pumping slurry to a temporary slurry storage tank, closing the mortar valve and the No. 1 mortar pump after the slurry is pumped, repeatedly pulping until a feedback signal of a mortar level meter in the temporary storage tank indicates that the mortar amount reaches more than 80% of the total volume of the temporary storage tank, and stopping the pulping operation by a control system.
(2) Detecting mortar moisture content parameters by using mortar moisture content, transmitting moisture content data to an automatic controller, transmitting the moisture content data to a concrete production control system when the automatic controller judges that the moisture content is deviated from a preset value (such as less than or equal to +/-5%), calculating a production mix proportion by the production control system according to the parameters, and controlling a No. 2 mortar pump, a mortar valve, a silica mortar metering scale and a metering and discharging valve by the production control system to complete silica mortar metering and discharging to a mixer.
(3) When the automatic controller judges that the water content is deviated from a preset value (such as less than or equal to +/-5%), closing the mortar valve, opening the material return valve, starting the 2# mortar pump, completely returning the ultra-poor silica fume slurry to the dispersion machine, closing the mortar valve, closing the material return valve, closing the 2# mortar pump, starting the silica fume or dispersion liquid metering scale, calculating and supplementing silica fume or dispersion liquid, re-dispersing and pulping, pumping into the mortar temporary storage tank, and performing water content detection and feedback control again until the water content is less than or equal to a preset value (such as less than or equal to +/-5%).
(4) When the feedback signal of the material level sensor shows that the mortar amount is reduced to a specified lower limit value (such as 30 percent), the next round of dispersed pulping and filling is started.
(5) And when the automatic controller judges that the storage time of the slurry in the mortar tank is longer than the preset time (such as more than or equal to 0.5 d), closing the mortar valve, opening the material return valve, starting the No. 2 mortar pump, completely returning the silicon mortar stored for a long time to the dispersion machine, closing the mortar valve, closing the material return valve, closing the No. 2 mortar pump, re-dispersing and pulping, and pumping into the mortar temporary storage tank.
The utility model has the advantages that:
1. through setting up high-speed predispersion silica fume thick liquid jar of keeping in to utilize reasonable control system and control parameter, can effectively solve current concrete mixing system beat and the big problem of high-speed predispersion silica fume thick liquid disperse system beat difference.
2. Through setting up pre-dispersion mortar feed back device, combine control system and parameter setting, carry out the secondary dispersion to the particle agglomeration in the high-speed pre-dispersion silica mortar that has dispersed but for a long time stews, solve the concrete negative effects that long time stews and reunite the silica mortar body and bring.
3. The water content of the pre-dispersed mortar is set for detection, the water content data is directly accessed into a mixing station mix proportion control system to recalculate the production mix proportion according to a measured value, or the silica fume with large fluctuation of the water content of the silica fume is secondarily blended through a feed back and feed supplement device and a control mechanism when the fluctuation of the water content is large, the control system and parameter setting are combined, or the problem of the precision of the production mix proportion caused by the fluctuation of the water content of the silica fume is solved, and the continuous, stable and accurate production and preparation of the high-speed pre-dispersed silica fume concrete is realized.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A high speed pre-dispersed silica mortar preparation system for concrete, characterized by; the system comprises: the system comprises a silica fume measuring bin (1), a dispersion liquid measuring bin (2), a high-speed dispersing device (3), a No. 1 mortar pump (4), a temporary storage tank (5), a No. 2 mortar pump (6), a silica fume measuring scale (7) and a silica fume preparation system automatic controller (8); a blanking valve A (1-1) is arranged below the silica fume measuring bin (1), a blanking valve B (2-1) is arranged below the dispersion liquid measuring bin (2), outlets of the silica fume measuring bin (1) and the dispersion liquid measuring bin (2) are respectively communicated with a high-speed dispersing device (3) through the blanking valve A (1-1) and the blanking valve B (2-1), a mortar valve (3-1) is arranged at the bottom of the high-speed dispersing device (3), the mortar valve (3-1) is communicated with a 1# mortar pump (4), the tail end of a pipeline of the 1# mortar pump (4) is communicated with a temporary storage tank (5) through a slurry conveying pipe, a 2# electromagnetic valve (5-1) is arranged at the bottom of the temporary storage tank (5), the output end of the 2# electromagnetic valve (5-1) is communicated with a 2# mortar pump (6), and the output end of the 2# mortar pump (6) is respectively connected with the high-speed dispersing device (3) and the silica fume pump (7-1) through pipelines with a slurry return valve (3-2) and a mortar metering valve (7-1) A mortar weigher (7); a slurry blanking valve (7-2) is arranged below the silica mortar weigher (7) and is communicated with the concrete mixer through a pipeline, and the components are connected with an automatic controller (8) of the silica mortar preparation system through signal lines.
2. A high speed pre-dispersed silica mortar preparation system for concrete according to claim 1, wherein; the temporary storage tank (5) is provided with a silica mortar density and water content detection and signal transmission device (5-2), a silica mortar slow stirring device (5-3), a stirring paddle (5-4) and a silica mortar level meter (5-5).
3. A high speed pre-dispersed silica mortar preparation system for concrete according to claim 2, wherein; and the silica mortar density and water content detection and signal transmission device (5-2) transmits the density and water content signals to the silica mortar preparation system automatic controller (8) and a mixing plant batching system, and is used for judging whether the silica mortar water content is qualified or not, and accurately calculating the silica mortar dosage under the specified silica mortar mixing amount and deducting the water consumption of the concrete production mixing proportion.
4. A high speed pre-dispersed silica mortar preparation system for concrete according to claim 2, wherein; the silica fume slurry level meter (5-5) transmits a level signal to the automatic controller (8) of the silica fume slurry preparation system and the concrete stirring system, and is used for judging whether to prepare silica fume slurry and produce concrete.
5. A high speed pre-dispersed silica mortar preparation system for concrete according to claim 1, wherein; the high-speed dispersing device (3) is a single shaft or a plurality of shafts, and each shaft is a single blade or a plurality of blades.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116811029A (en) * | 2023-06-27 | 2023-09-29 | 山东道姆机械设备有限公司 | Circulation control system based on mud stirring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116811029A (en) * | 2023-06-27 | 2023-09-29 | 山东道姆机械设备有限公司 | Circulation control system based on mud stirring |
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