CN115043395B - Preparation device and method for producing prefabricated part additive by using graphene material - Google Patents

Abstract

The invention relates to a preparation device and a preparation method for producing a prefabricated member additive by using a graphene material. The device comprises an outer shell, a microwave and ultrasonic combined reaction mechanism, a drying mechanism and a grinding mechanism, wherein the microwave and ultrasonic combined reaction mechanism, the drying mechanism and the grinding mechanism are sequentially arranged in the outer shell from top to bottom and are sequentially communicated, and a particle precision processing mechanism is arranged in the grinding mechanism; according to the preparation device and the preparation method for the prefabricated member additive by using the graphene material, the prepared modified graphene preparation prefabricated member additive can effectively improve the strength and quick-drying effect of the tubular pile cement concrete, improve the rationality index of the prefabricated member cement concrete, obviously improve the indexes of the concrete manufactured by using the modified cement in the aspects of compression resistance, fracture resistance, permeability resistance and the like, can efficiently separate substandard large-particle materials from substandard particle materials in the grinding process, and carries out secondary treatment on the substandard large-particle materials to enable the substandard large-particle materials to reach the standard, and the energy consumption of the device is less.

Description

Preparation device and method for producing prefabricated part additive by using graphene material

Technical Field

The invention belongs to the technical field of modified road cement preparation, and particularly relates to a preparation device and a preparation method for producing a prefabricated member additive by using a graphene material.

Background

Cement concrete: refers to a general term for engineering composite materials which are formed by mixing cement, sand, stone and the like with water into a whole. The term concrete generally refers to cement as a cementing material, sand and stone as aggregate; the cement concrete is obtained by mixing with water (with or without additives and admixtures) according to a certain proportion, stirring, molding and curing, and is also called ordinary concrete, and is widely applied to civil engineering.

Cement concrete products refer to various building components and engineering prefabricated parts processed from cement concrete, and are conventionally referred to as cement products, including products of various geometric shapes such as cement concrete slabs, blocks, beams, columns, pipes and the like.

At present, a novel carbon nanomaterial is added in cement production, so that the method is an effective way for improving the concrete performance of a product, more carbon nanomaterial types are added into cement at present, and more preparation devices and preparation methods are provided, wherein grafted graphene has remarkable effect in hydration reaction, calcium silicate hydrated particles in cement are bonded with graphene and serve as nucleation sites, the growth of gel along graphene sheets is promoted, the microstructure evolution process of the cement in the initial stage of hydration is further changed, the strength of the concrete is effectively improved, and the device for treating the novel carbon nanomaterial at present cannot control the particle standard of a powder product, easily generates large particle materials, and causes the influence on the hydration reaction speed of a final product in the hydration reaction.

Disclosure of Invention

The invention aims to solve the problems and provide a preparation device and a preparation method for producing a prefabricated member additive by using a graphene material.

The invention realizes the above purpose through the following technical scheme:

the preparation device for producing the prefabricated member additive by using the graphene material comprises an outer shell, and a microwave and ultrasonic combined reaction mechanism, a drying mechanism and a grinding mechanism which are sequentially arranged in the outer shell from top to bottom, wherein the microwave and ultrasonic combined reaction mechanism, the drying mechanism and the grinding mechanism are sequentially communicated, and a particle precision processing mechanism is arranged in the grinding mechanism;

the microwave and ultrasonic combined reaction mechanism is used for providing a material reaction environment;

the drying mechanism is used for drying the reacted liquid material;

the grinding mechanism is used for grinding the dried liquid material, wherein the particle precision processing mechanism is used for processing the substandard particle material and enabling the substandard particle material to reach the standard.

As a further optimization scheme of the invention, the microwave and ultrasonic combined reaction mechanism comprises a baffle plate connected to the inner wall of the outer shell, a first reaction container and a microwave generator which are arranged on the baffle plate, an ultrasonic disperser arranged at the upper end of the outer shell, and a feed pipe and a first exhaust pipe which are connected to the first reaction container, wherein one ends of the feed pipe and the first exhaust pipe penetrate through the outer part of the outer shell, the output end of the ultrasonic disperser extends to the inner part of the first reaction container, the lower end of the first reaction container is connected with a first blanking pipe, and the first blanking pipe is connected with the drying mechanism.

As a further optimization scheme of the invention, the drying mechanism comprises a drying container and a blanking funnel which are connected to the inner wall of the outer shell, a lower sealing door which is movably connected to a discharge port at the lower end of the drying container, an air cylinder which is connected between the lower sealing door and the blanking funnel, a second exhaust pipe which is connected to the upper end of the drying container, an electric push rod which is connected to the lower end of the partition plate, and a divider which is arranged in the drying container and is close to the upper end, wherein the output end of the electric push rod extends into the drying container and is connected with the divider, an electric heating layer is arranged in the wall of the drying container, two ends of the air cylinder are respectively hinged with the blanking funnel and the lower sealing door, and the discharge port of the blanking funnel is communicated with the grinding mechanism.

As a further optimization scheme of the invention, the grinding mechanism comprises a grinding cylinder arranged at the bottom of the outer shell, an inclined guide disc arranged on the side wall of the grinding cylinder, a motor connected to the upper end of the grinding cylinder, grinding blocks respectively connected to the middle part of an output shaft of the motor, a wedge-shaped track arranged at one end of the grinding block, an auxiliary grinding body arranged on the inner wall of the grinding cylinder and matched with the grinding blocks, an inner cylinder body connected to the lower end of the grinding block and a discharge pipe arranged below the auxiliary grinding body, wherein the particle precision processing mechanism is connected to the lower end of the auxiliary grinding body and is positioned above the discharge pipe.

As a further optimization scheme of the invention, the particle precision processing mechanism comprises a fine screening mechanism, a buffer mechanism and a secondary grinding mechanism, wherein the buffer mechanism is connected to the fine screening mechanism, the fine screening mechanism is detachably connected with the lower end of the auxiliary grinding body through the buffer mechanism, when materials are ground by the auxiliary grinding body and the grinding block and then fall onto the fine screening mechanism to be subjected to primary screening, the fine screening mechanism is driven to move up and down when the motor rotates, and air flow is generated after the buffer mechanism is compressed, and substandard particle materials on the fine screening mechanism are blown to the secondary grinding mechanism to be subjected to secondary grinding.

As a further optimization scheme of the invention, the fine screening mechanism comprises a central plate body, a first annular screen plate connected to the side wall of the central plate body, a connecting annular plate connected to the outer circular wall of the first annular screen plate, a second annular screen plate connected to the outer circular wall of the connecting annular plate, a support ring body connected to the outer circular wall of the second annular screen plate, a vertical annular screen plate connected between the connecting annular plate and the central plate body, an L-shaped rod connected to the upper end of the central plate body, a plurality of guide rods and a return spring sleeved on the guide rods, wherein the L-shaped rod is matched with the wedge-shaped rail, the upper end face of the support ring body is provided with an annular ventilation groove, a plurality of oblique ventilation grooves communicated with the annular ventilation grooves are arranged in the wall of the support ring body, and the lower end of the buffer mechanism is connected to the annular ventilation grooves and covers the annular ventilation grooves.

As a further optimization scheme of the invention, the buffer mechanism comprises an upper annular plate connected to the lower end of the auxiliary grinding body, a lower annular plate connected to the supporting annular body, an outer corrugated sleeve and an inner corrugated sleeve connected between the upper annular plate and the lower annular plate, a plurality of upper perforations arranged on the upper annular plate, an upper bracket connected to the upper perforations, an upper airflow regulating plate connected to the upper bracket, a plurality of first air holes arranged on the upper airflow regulating plate, a first plastic sheet connected to the lower end face of the upper airflow regulating plate, a plurality of lower perforations arranged on the lower annular plate, a lower bracket connected to the lower perforations, a lower airflow regulating plate connected to the lower bracket, a plurality of second air holes arranged on the lower airflow regulating plate and a second plastic sheet connected to the lower end face of the lower airflow regulating plate, wherein buffer springs are connected between the upper bracket and the lower bracket which are correspondingly arranged, L-shaped ventilation grooves are arranged in the walls of the auxiliary grinding body, the upper perforations are communicated with the outside through the L-shaped ventilation grooves, and dust is arranged at the joint of the L-shaped ventilation grooves and the outside.

As a further optimization scheme of the invention, the secondary grinding mechanism comprises a pressing ring plate sleeved outside the central plate body, a plurality of guide frames connected to the upper end of the pressing ring plate, guide grooves arranged on the guide frames and matched with the guide rods, a plurality of fixing screws connected to the lower end of the pressing ring plate, a plurality of hollow loop bars movably connected to the connecting ring plate and a plurality of grinding blades connected to the outer wall of the hollow loop bars, wherein the inner wall of the hollow loop bars is provided with internal threads matched with the fixing screws, and the upper end of the pressing ring plate is contacted with the lower end of the inner cylinder body.

As a further optimization scheme of the invention, a plurality of rotary grooves are arranged on the connecting ring plate, and the lower end of the hollow loop bar is connected with a rotating body matched with the rotary grooves.

The method for preparing the additive by adopting the preparation device for producing the prefabricated component additive by using the graphene material comprises the following steps of:

step S1, introducing graphene oxide into a microwave ultrasonic combined reaction mechanism, controlling the graphene oxide to be in a weak base reaction environment, performing ultrasonic dispersion to obtain an aqueous solution, then adding an alkaline substance, and performing a grafting reaction on the aqueous solution and the alkaline substance under a microwave condition to form a graphene additive solution participating in hydration reaction of a cementing material, wherein the pH=7.5-8.0 of the weak base reaction environment;

step S2, introducing graphene additive liquid into a drying mechanism for drying treatment to obtain a solid additive;

and S3, introducing the solid additive into a grinding mechanism for full grinding to obtain the powder additive.

The invention has the beneficial effects that: the prefabricated member additive prepared by the modified graphene can effectively improve the strength and quick-drying effect of the tubular pile cement concrete, improve the rationality index of the prefabricated member cement concrete, obviously improve the indexes of the concrete manufactured by the modified cement in the aspects of compression resistance, fracture resistance, impermeability and the like, efficiently separate substandard large-particle materials from substandard particle materials in the grinding process, and carry out secondary treatment on the substandard large-particle materials to ensure that the substandard large-particle materials reach the standard, and the energy consumption of the device is less.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of FIG. 1A in accordance with the present invention;

FIG. 3 is a schematic structural view of the fine sun material mechanism of the present invention;

FIG. 4 is a schematic view of the structure of the buffer mechanism of the present invention;

FIG. 5 is a schematic diagram of a secondary grinding mechanism of the present invention;

FIG. 6 is a table of physical properties of graphene tubular pile high strength cement concrete;

fig. 7 is a table of graphene tubular pile high strength cement concrete test data.

In the figure: 1. an outer housing; 21. a partition plate; 22. a first reaction vessel; 23. a feed pipe; 24. a first exhaust pipe; 25. an ultrasonic disperser; 26. a microwave generator; 27. a first blanking pipe; 31. a drying container; 310. sealing the door; 311. an electrical heating layer; 312. a second exhaust pipe; 313. a divider; 32. a blanking funnel; 33. a cylinder; 34. an electric push rod; 41. a grinding cylinder; 410. an auxiliary grinding body; 411. an L-shaped vent groove; 42. obliquely guiding the material tray; 43. a motor; 431. a wedge rail; 44. grinding the blocks; 441. an inner cylinder; 45. a discharge pipe; 5. a particle precision processing mechanism; 51. a fine screening mechanism; 5101. a center plate body; 5102. a first annular screen plate; 5103. connecting the annular plates; 5104. a rotary groove; 5105. a second annular screen plate; 5106. a support ring body; 5107. an annular vent groove; 5108. an oblique ventilation groove; 5109. an L-shaped rod; 5110. a guide rod; 5111. a return spring; 5112. vertical annular screen plate; 52. a buffer mechanism; 5201. an upper ring plate; 5202. a lower ring plate; 5203. an outer corrugated sleeve; 5204. an inner corrugated sleeve; 5205. punching on the upper part; 5206. an upper bracket; 5207. an upper air flow regulating plate; 5208. a first air hole; 5209. a first plastic sheet; 5210. a lower perforation; 5211. a lower bracket; 5212. a lower air flow regulating plate; 5213. a second air hole; 5214. a second plastic sheet; 5215. a buffer spring; 53. a secondary grinding mechanism; 5301. a pressing ring plate; 5302. a guide frame; 5303. a guide groove; 5304. a fixed screw; 5305. a hollow loop bar; 5306. a rotating body; 5307. and grinding the blade.

Detailed Description

The following detailed description of the present application is provided in conjunction with the accompanying drawings, and it is to be understood that the following detailed description is merely illustrative of the application and is not to be construed as limiting the scope of the application, since numerous insubstantial modifications and adaptations of the application will be to those skilled in the art in light of the foregoing disclosure.

Examples

As shown in fig. 1 and 2, a preparation device for producing a prefabricated member additive by using a graphene material comprises an outer shell 1, a microwave-ultrasonic combined reaction mechanism, a drying mechanism and a grinding mechanism, wherein the microwave-ultrasonic combined reaction mechanism, the drying mechanism and the grinding mechanism are sequentially arranged in the outer shell 1 from top to bottom and are sequentially communicated, and a particle precision processing mechanism 5 is arranged in the grinding mechanism;

the microwave and ultrasonic combined reaction mechanism is used for providing a material reaction environment;

the drying mechanism is used for drying the reacted liquid material;

the grinding mechanism is used for grinding the dried liquid material, wherein the particle precision processing mechanism 5 is used for processing the substandard particle material and enabling the substandard particle material to reach the standard.

When the additive is prepared, graphene oxide is introduced into a microwave ultrasonic combined reaction mechanism, the graphene oxide is controlled to be in a weak base reaction environment and subjected to ultrasonic dispersion to obtain an aqueous solution, then an alkaline substance is added, the aqueous solution and the alkaline substance are subjected to grafting reaction under the microwave condition to form graphene additive solution which participates in hydration reaction of a cementing material, wherein the pH value of the weak base reaction environment is=7.5-8.0;

then introducing graphene additive liquid into a drying mechanism for drying treatment to obtain a solid additive;

and finally, introducing the solid additive into a grinding mechanism for fully grinding to obtain the powder additive.

As shown in fig. 1, the microwave-ultrasonic combined reaction mechanism comprises a partition plate 21 connected to the inner wall of the outer shell 1, a first reaction container 22 and a microwave generator 26 arranged on the partition plate 21, an ultrasonic disperser 25 arranged at the upper end of the outer shell 1, and a feed pipe 23 and a first exhaust pipe 24 connected to the first reaction container 22, wherein one ends of the feed pipe 23 and the first exhaust pipe 24 penetrate through the outer shell 1, the output end of the ultrasonic disperser 25 extends to the inner part of the first reaction container 22, and the lower end of the first reaction container 22 is connected with a first blanking pipe 27, and the first blanking pipe 27 is connected with the drying mechanism.

As described above, graphene oxide is fused into the first reaction vessel 22, the pH value of the liquid therein is adjusted to 7.5-8.0, then the liquid material mixed with graphene oxide is subjected to dispersion treatment by the ultrasonic disperser 25, then an alkaline substance is added into the aqueous solution, the solution and the alkaline substance undergo a grafting reaction under the microwave condition to form a graphene additive solution participating in hydration reaction of the gel material, and after the reaction of the graphene additive solution is completed, the graphene additive solution is introduced into the drying mechanism from the first blanking pipe 27 for drying treatment.

As shown in fig. 1, the drying mechanism includes a drying container 31 and a blanking funnel 32 connected to an inner wall of the outer casing 1, a lower sealing door 310 movably connected to a discharge port at a lower end of the drying container 31, an air cylinder 33 connected between the lower sealing door 310 and the blanking funnel 32, a second exhaust pipe 312 connected to an upper end of the drying container 31, an electric push rod 34 connected to a lower end of the partition 21, and a divider 313 provided in the drying container 31 and near an upper end, wherein an output end of the electric push rod 34 extends into the drying container 31 and is connected to the divider 313, an electric heating layer 311 is provided in a wall of the drying container 31, two ends of the air cylinder 33 are respectively hinged to the blanking funnel 32 and the lower sealing door 310, and a discharge port of the blanking funnel 32 is communicated with the grinding mechanism.

As described above, after the graphene additive liquid is introduced into the drying container 31, the graphene additive liquid in the drying container 31 is dried by the electric heating layer 311, and then a solid graphene additive is formed after drying, and then the divider 313 is pushed by the electric push rod 34 to cut the solid graphene additive into small pieces, so that the small pieces of solid graphene additive can fall into the grinding mechanism from the blanking funnel 32, and when the material is blanked, the lower sealing door 310 is opened downwards by the air cylinder 33, and the cut small pieces of solid graphene additive fall into the grinding mechanism to be ground to form a powdery additive.

As shown in fig. 1 and 2, the grinding mechanism includes a grinding cylinder 41 disposed at the bottom of the outer casing 1, an inclined guide tray 42 disposed on a sidewall of the grinding cylinder 41, a motor 43 connected to an upper end of the grinding cylinder 41, a grinding block 44 respectively connected to an output shaft of the motor 43, a wedge-shaped rail 431 disposed at one end of the grinding block, an auxiliary grinding body 410 disposed on an inner wall of the grinding cylinder 41 and matched with the grinding block 44, an inner cylinder 441 connected to a lower end of the grinding block 44, and a discharge pipe 45 disposed below the auxiliary grinding body 410, wherein the particle precision processing mechanism 5 is connected to a lower end of the auxiliary grinding body 410, and the particle precision processing mechanism 5 is disposed above the discharge pipe 45.

It should be noted that, as described above, the solid graphene additive gradually moves to the space between the grinding block 44 and the auxiliary grinding body 410 after falling into the oblique guide tray 42 in the grinding mechanism, at this time, the motor 43 drives the grinding block 44 to rotate, the solid graphene additive is continuously ground between the grinding block 44 and the auxiliary grinding body 410 until its particle diameter is smaller than the gap between the grinding block 44 and the auxiliary grinding body 410, and falls into the particle precision processing mechanism 5, and because the grinding block 44 and the auxiliary grinding body 410 have a certain gully, some particles of the non-standard material directly fall into the particle precision processing mechanism 5 from the gully, at this time, the particle precision processing mechanism 5 can conveniently separate the non-standard material from the standard material, and perform secondary processing on the non-standard material until the non-standard material is discharged after the non-standard material reaches the standard.

As shown in fig. 2, the particle precision processing mechanism 5 includes a fine screening mechanism 51, a buffer mechanism 52 and a secondary grinding mechanism 53, wherein the buffer mechanism 52 is connected to the fine screening mechanism 51, the fine screening mechanism 51 is detachably connected to the lower end of the auxiliary grinding body 410 through the buffer mechanism 52, when materials are ground by the auxiliary grinding body 410 and the grinding block 44 and then fall onto the fine screening mechanism 51 to perform primary screening, the fine screening mechanism 51 is driven to move up and down when the motor 43 rotates, and the buffer mechanism 52 generates air flow after being compressed and blows the unqualified particle materials on the fine screening mechanism 51 to the secondary grinding mechanism 53 for secondary grinding.

Wherein, as shown in fig. 2 and 3, the fine screening mechanism 51 comprises a central plate 5101, a first annular screen plate 5102 connected to the side wall of the central plate 5101, a connecting ring plate 5103 connected to the outer circular wall of the first annular screen plate 5102, a second annular screen plate 5105 connected to the outer circular wall of the connecting ring plate 5103, a supporting ring body 5106 connected to the outer circular wall of the second annular screen plate 5105, a vertical annular screen plate 5112 connected between the connecting ring plate 5103 and the central plate 5101, an L-shaped rod 5109 connected to the upper end of the central plate 5101, a plurality of guide rods 5110, a return spring 5111 sleeved on the guide rods 5110, wherein the L-shaped rod 5109 is matched with the wedge track 431, an annular vent groove 5107 is arranged on the upper end surface of the supporting ring body 5106, a plurality of inclined vent grooves 5108 communicated with the annular vent groove 5107 are arranged in the wall of the supporting ring body 5106, and the lower end of the buffer mechanism 52 is connected to the annular vent groove 5107 and covers the annular vent groove 5107.

It should be noted that, when the material falls onto the fine screening mechanism 51, it is located on the second annular screen plate 5105, the particulate material reaching the standard can directly pass through the second annular screen plate 5105, and the particulate material reaching the standard is separated by the second annular screen plate 5105, while the motor 43 drives the grinding block 44 to rotate, the wedge rail 431 connected to the output shaft of the motor follows the output shaft to rotate in the same direction, and when the wedge rail 431 moves to the L-shaped rod 5109, it contacts with the L-shaped rod 5109 and drives it to move up continuously along the wedge rail 431, after the L-shaped rod 5109 moves up, the central plate 5101, the first annular screen plate 5102, the connecting annular screen plate 5103, the second annular screen plate 5105, the supporting ring body 5106 and the vertical annular screen plate 5112 are all moved up, at this time, the buffer mechanism 52 is compressed, the air in the air is blown to the second annular screen plate 5105 from the annular vent grooves 5107 and the inclined vent grooves 5108 on the support ring body 5106, so that the substandard granular materials separated on the second annular screen plate 5105 can be blown to the secondary grinding mechanism 53, the secondary grinding mechanism 53 arranged at the position moves upwards along with the upward movement of the connecting ring plate 5103 and is contacted with the inner cylinder 441 at the lower end of the grinding block 44, the secondary grinding mechanism 53 performs secondary grinding treatment on the substandard granular materials under the extrusion of the inner cylinder 441, and after the L-shaped rod 5109 is separated from the wedge-shaped track 431, the whole fine screening mechanism 51 returns to the initial position under the rebound effect of the buffer mechanism 52 and generates certain vibration, the screening efficiency of the second annular screen plate 5105 can be improved, the mesh on the second annular screen plate 5105 is prevented from being blocked, and meanwhile, the substandard granular materials and the substandard granular materials can be effectively separated;

it should be noted that, when the air current generated by the buffer mechanism 52 during compression blows the non-standard particulate material to the secondary grinding mechanism 53, some of the non-standard particulate material is mixed therein, but when the non-standard particulate material moves to the vertical annular screen 5112, the non-standard particulate material is isolated by the vertical annular screen 5112 and prevented from being directly discharged, the mixed standard particulate material can pass through the vertical annular screen 5112 and finally fall from the first annular screen 5102, meanwhile, the non-standard particulate material reaches standard after multiple grinding of the secondary grinding mechanism 53, and passes through the vertical annular screen 5112 and finally falls from the first annular screen 5102 under the action of the air current generated by the buffer mechanism 52, so that the finally manufactured powder additive can reach high-precision standard, and the time consumption of the subsequent hydration reaction can be effectively reduced.

Wherein, as shown in fig. 2 and 4, the buffer mechanism 52 includes an upper ring plate 5201 connected to the lower end of the auxiliary grinding body 410, a lower ring plate 5202 connected to the supporting ring body 5106, an outer bellows 5203 and an inner bellows 5204 connected between the upper ring plate 5201 and the lower ring plate 5202, a plurality of upper through holes 5205 provided on the upper ring plate 5201, an upper bracket 5206 connected to the upper through holes 5205, an upper air flow regulating plate 5207 connected to the upper bracket 5206, a plurality of first air holes 5208 provided on the upper air flow regulating plate 5207 and a first plastic sheet 5209 connected to the lower end face of the upper air flow regulating plate 5207, a plurality of lower through holes 5210 provided on the lower ring plate 5202, a lower bracket 5211 connected to the lower through holes 5210, a lower air flow regulating plate 5212 provided on the lower bracket 5211, a plurality of second air holes 5213 provided on the lower air flow regulating plate 5212 and a second sheet 5214 connected to the lower end face of the lower air flow regulating plate 5212, and a plurality of air holes 5208 are provided between the upper bracket 526 and the lower bracket 5211, and the upper bracket is provided with a vent groove 5215 connected to the outer side of the auxiliary grinding body, and the air flow regulating plate is provided with an air vent groove 5215.

As described above, the space compression formed between the outer bellows 5203, the inner bellows 5204, the upper ring plate 5201 and the lower ring plate 5202 of the buffer mechanism 52 becomes smaller and a pressure higher than the outside atmospheric pressure is generated, and at this time, the first plastic sheet 5209 on the upper air flow regulating plate 5207 provided on the upper ring plate 5201 is tightly pressed and attached to the upper air flow regulating plate 5207 to seal the plurality of first air holes 5208 on the upper air flow regulating plate 5207, and the second plastic sheet 5214 on the lower air flow regulating plate 5212 provided on the lower ring plate 5202 is blown open, and the air in the space formed between the outer bellows 5203, the inner bellows 5204, the upper ring plate 5201 and the lower ring plate 5202 is discharged from the second air holes 5213 on the lower air flow regulating plate 5212 into the annular air passage 5107 on the support ring 5106, and finally blown from the inclined air passage 5108 to the second annular filter screen plate, forming an air flow to blow the substandard granular materials on the second annular filter screen plate to the secondary grinding mechanism 53, wherein the buffer spring 5215 is in a compressed state, and when the buffer mechanism 52 rebounds, the space formed between the outer corrugated sleeve 5203, the inner corrugated sleeve 5204, the upper annular plate 5201 and the lower annular plate 5202 is gradually enlarged to generate negative pressure, the second plastic sheets 5214 on the lower air flow regulating plate 5212 are adsorbed on the lower air flow regulating plate 5212 by the negative pressure and a plurality of second air holes 5213 are blocked, so that the granular materials can be prevented from flowing back to the space formed between the outer corrugated sleeve 5203, the inner corrugated sleeve 5204, the upper annular plate 5201 and the lower annular plate 5202 under the action of the air flow, the first plastic sheets 5209 on the upper air flow regulating plate 5207 are separated from the upper air flow regulating plate 5207 under the action of the negative pressure, the first air holes 5208 are opened, the outside air flows into the space formed between the outer corrugated sleeve 3, the inner corrugated sleeve 4, the upper annular plate 5201 and the lower annular plate 5202 from the L-shaped ventilation grooves 5201, in this manner, a sustainable wind flow is generated to blow the substandard particulate material towards the secondary grinding mechanism 53.

Wherein, as shown in fig. 2 and 5, the secondary grinding mechanism 53 comprises a pressing ring plate 5301 sleeved outside the central plate body 5101, a plurality of guide frames 5302 connected to the upper end of the pressing ring plate 5301, a guide groove 5303 arranged on the guide frames 5302 and matched with the guide rod 5110, a plurality of fixing screws 5304 connected to the lower end of the pressing ring plate 5301, a plurality of hollow sleeve rods 5305 movably connected to the connecting ring plate 5103 and a plurality of grinding blades 5307 connected to the outer wall of the hollow sleeve rods 5305, wherein the inner wall of the hollow sleeve rods 5305 is provided with internal threads matched with the fixing screws 5304, and the upper end of the pressing ring plate 5301 is contacted with the lower end of the inner cylinder body 441; the connection ring plate 5103 is provided with a plurality of rotating grooves 5104, and the lower end of the hollow sleeve rod 5305 is connected with a rotating body 5306 matched with the rotating grooves 5104.

It should be noted that, as described above, in the process that the buffer mechanism 52 generates the air flow to blow the substandard granular material to the secondary grinding mechanism 53, the pressing ring plate 5301 in the secondary grinding mechanism 53 keeps unchanged in position under the interference action of the inner cylinder 441, and the hollow sleeve rod 5305 continuously starts rotating and drives the grinding blade 5307 arranged on the hollow sleeve rod 5305 to rotate in the same direction and at the same angle under the action of the fixing screw 5304 in the process of moving up along with the connecting ring plate 5103, the substandard granular material can be sufficiently secondarily ground after the grinding blade 5307 rotates, the substandard granular material can be discharged from the vertical annular filter screen plate after multiple times of grinding until all the solid additives are ground into the substandard powder additives, and the whole process uses one motor 43 as a power source, so that the grinding precision is improved, the energy consumption of the whole device is reduced, the setting of other power sources is reduced, the volume of the device is reduced, and the whole device is greatly reduced.

In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be interpreted as indicating or implying a relative importance or an implicit indication of the number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

The above examples merely represent a few embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the present invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.

Claims (5)

1. The utility model provides an use preparation facilities of graphene materials production prefabrication additive which characterized in that: the device comprises an outer shell, a microwave and ultrasonic combined reaction mechanism, a drying mechanism and a grinding mechanism, wherein the microwave and ultrasonic combined reaction mechanism, the drying mechanism and the grinding mechanism are sequentially arranged in the outer shell from top to bottom and are sequentially communicated, and a particle precision processing mechanism is arranged in the grinding mechanism;

the microwave and ultrasonic combined reaction mechanism is used for providing a material reaction environment;

the drying mechanism is used for drying the reacted liquid material;

the grinding mechanism is used for grinding the dried liquid material, wherein the particle precision processing mechanism is used for processing the substandard particle material and enabling the substandard particle material to reach the standard;

the grinding mechanism comprises a grinding cylinder arranged at the bottom of the outer shell, an inclined material guiding disc arranged on the side wall of the grinding cylinder, a motor connected to the upper end of the grinding cylinder, a grinding block respectively connected to the middle part of an output shaft of the motor, a wedge-shaped track at one end of the grinding block, an auxiliary grinding body arranged on the inner wall of the grinding cylinder and matched with the grinding block, an inner cylinder body connected to the lower end of the grinding block and a material discharging pipe arranged below the auxiliary grinding body, wherein the particle precision processing mechanism is connected to the lower end of the auxiliary grinding body and is positioned above the material discharging pipe;

the particle precision processing mechanism comprises a fine screening mechanism, a buffer mechanism and a secondary grinding mechanism, wherein the buffer mechanism is connected to the fine screening mechanism, the fine screening mechanism is detachably connected with the lower end of the auxiliary grinding body through the buffer mechanism, when materials are ground by the auxiliary grinding body and the grinding block and then fall onto the fine screening mechanism to be subjected to primary screening, the fine screening mechanism is driven to move up and down when a motor rotates, and the buffer mechanism generates air flow after being compressed and blows substandard particle materials on the fine screening mechanism to the secondary grinding mechanism to be subjected to secondary grinding;

the fine screening mechanism comprises a central plate body, a first annular screen plate connected to the side wall of the central plate body, a connecting annular plate connected to the outer circular wall of the first annular screen plate, a second annular screen plate connected to the outer circular wall of the connecting annular plate, a support ring body connected to the outer circular wall of the second annular screen plate, a vertical annular screen plate connected between the connecting annular plate and the central plate body, an L-shaped rod connected to the upper end of the central plate body, a plurality of guide rods and a reset spring sleeved on the guide rods, wherein the L-shaped rod is arranged in a matched mode with the wedge-shaped rail, an annular ventilation groove is formed in the upper end face of the support ring body, a plurality of inclined ventilation grooves communicated with the annular ventilation groove are formed in the wall of the support ring body, and the lower end of the buffer mechanism is connected to the annular ventilation groove and covers the annular ventilation groove;

the buffering mechanism comprises an upper annular plate connected to the lower end of the auxiliary grinding body, a lower annular plate connected to the supporting annular body, an outer corrugated sleeve and an inner corrugated sleeve connected between the upper annular plate and the lower annular plate, a plurality of upper perforations arranged on the upper annular plate, an upper bracket connected to the upper perforations, an upper airflow regulating plate connected to the upper bracket, a plurality of first air holes arranged on the upper airflow regulating plate, a first plastic sheet connected to the lower end face of the upper airflow regulating plate, a plurality of lower perforations arranged on the lower annular plate, a lower bracket connected to the lower perforations, a lower airflow regulating plate connected to the lower bracket, a plurality of second air holes arranged on the lower airflow regulating plate and a second plastic sheet connected to the lower end face of the lower airflow regulating plate, wherein L-shaped ventilation grooves are arranged in the walls of the auxiliary grinding body, the upper perforations are communicated with the outside through the L-shaped ventilation grooves, and dust is arranged at the joint positions of the L-shaped ventilation grooves and the outside;

the secondary grinding mechanism comprises a pressing ring plate sleeved outside the central plate body, a plurality of guide frames connected to the upper end of the pressing ring plate, guide grooves which are formed in the guide frames and matched with the guide rods, a plurality of fixing screws connected to the lower end of the pressing ring plate, a plurality of hollow loop bars movably connected to the connecting ring plate and a plurality of grinding blades connected to the outer wall of the hollow loop bars, internal threads matched with the fixing screws are formed in the inner wall of the hollow loop bars, and the upper end of the pressing ring plate is in contact with the lower end of the inner cylinder body.

2. The preparation device for producing prefabricated member additives by using graphene materials according to claim 1, wherein: the microwave and ultrasonic combined reaction mechanism comprises a baffle plate connected to the inner wall of the outer shell, a first reaction container and a microwave generator arranged on the baffle plate, an ultrasonic disperser arranged at the upper end of the outer shell, and a feed pipe and a first exhaust pipe connected to the first reaction container, wherein one ends of the feed pipe and the first exhaust pipe penetrate through the outer part of the outer shell, the output end of the ultrasonic disperser extends to the inner part of the first reaction container, and the lower end of the first reaction container is connected with a first blanking pipe connected with a drying mechanism.

3. The preparation device for producing prefabricated member additives by using graphene materials according to claim 2, wherein: the drying mechanism comprises a drying container and a discharging funnel which are connected to the inner wall of an outer shell, a lower sealing door movably connected to the discharging hole at the lower end of the drying container, an air cylinder connected between the lower sealing door and the discharging funnel, a second exhaust pipe connected to the upper end of the drying container, an electric push rod connected to the lower end of a partition plate and a divider arranged in the drying container and close to the upper end, wherein the output end of the electric push rod extends into the drying container and is connected with the divider, an electric heating layer is arranged in the wall of the drying container, two ends of the air cylinder are hinged to the discharging funnel and the lower sealing door respectively, and the discharging hole of the discharging funnel is communicated with the grinding mechanism.

4. A preparation device for producing a prefabricated member additive by using graphene materials according to claim 3, wherein: the connecting ring plate is provided with a plurality of rotary grooves, and the lower end of the hollow loop bar is connected with a rotary body matched with the rotary grooves.

5. A method for preparing an additive using a preparation apparatus for producing a preform additive using a graphene material according to any one of claims 1 to 4, comprising the steps of:

step S1, introducing graphene oxide into a microwave ultrasonic combined reaction mechanism, controlling the graphene oxide to be in a weak base reaction environment, performing ultrasonic dispersion to obtain an aqueous solution, then adding an alkaline substance, and performing a grafting reaction on the aqueous solution and the alkaline substance under a microwave condition to form a graphene additive solution participating in hydration reaction of a cementing material, wherein the pH=7.5-8.0 of the weak base reaction environment;

step S2, introducing graphene additive liquid into a drying mechanism for drying treatment to obtain a solid additive;

and S3, introducing the solid additive into a grinding mechanism for full grinding to obtain the powder additive.