Crack prevention raw material preparation apparatus and method for raw material pool concrete structure

Abstract

The application discloses raw material pool concrete structure anti-cracking raw material preparation equipment and method, including raw material crushing device, raw material crushing device is ball mill, ball mill includes cylinder and steel ball in cylinder, the middle part of cylinder inner chamber is separated into front chamber and rear chamber by partition, the steel ball of front chamber is coarse grinding steel ball, the steel ball of rear chamber is fine grinding steel ball, a plurality of storage barrels are circumferentially communicated in the side wall of rear chamber, the side wall of front chamber is provided with a material guide pipe which is communicated with the side wall of storage barrel, the raw material particles in front chamber enter into rear chamber through material guide pipe and storage barrel, the raw material is prevented from returning to coarse grinding section from fine grinding section, and the speed of raw material from one grinding section to another grinding section is improved.

Description

Technical Field

[0001] This invention relates to the field of concrete technology, and in particular to equipment and methods for preparing raw materials for crack-resistant concrete structures in raw material pools. Background Technology

[0002] In the chemical and construction industries, concrete feedstock tanks are commonly used to store and process raw materials for concrete production. To prevent cracking in concrete feedstock tanks, especially in ultra-long feedstock tanks used in chemical environments, anti-cracking measures are crucial. This requires adding various admixtures to the concrete structure of the feedstock tank, which necessitates grinding many raw materials into powder. Currently, ball mills are commonly used for grinding these raw materials. To improve grinding efficiency, multiple grinding sections are typically set up within the ball mill, separated by perforated partitions. From front to back, the steel balls in each grinding section progressively decrease in size, allowing the raw materials to be gradually ground as they pass through each grinding section.

[0003] However, since the ball mill only rotates around its axis, and the raw material needs to move axially from one grinding section to another, there is no driving force on the raw material along the axis. The raw material can only pass naturally through the mesh of the partition. Moreover, since there is only one partition between the front and rear grinding sections, finer particles from the rear can easily enter the front grinding section. That is, the particles return from the fine grinding section to the coarse grinding section. This not only makes the speed at which the raw material moves from one coarse grinding section to another fine grinding section slower, but also affects the grinding efficiency of the coarse grinding section, thereby reducing the overall grinding efficiency. Summary of the Invention

[0004] To address the issue of raw materials returning from the fine grinding section to the coarse grinding section, this invention proposes a raw material preparation device for anti-crack concrete structures in a raw material pool. This device avoids the return of raw materials from the fine grinding section to the coarse grinding section and increases the speed at which raw materials enter one grinding section from another.

[0005] The technical solution adopted in this invention is to design a raw material preparation equipment for crack-resistant concrete structures in a raw material pool, including a raw material crushing device, which is a ball mill. The ball mill includes a cylinder and steel balls located inside the cylinder. The inner cavity of the cylinder is divided into a front chamber and a rear chamber by a partition. The steel balls in the front chamber are coarse-ground steel balls, and the steel balls in the rear chamber are fine-ground steel balls. Multiple storage tanks are circumferentially connected to the side wall of the rear chamber. A guide pipe communicating with the side wall of the storage tanks is provided on the side wall of the front chamber. The depth of the storage tanks is along the radial direction of the rear chamber. The guide pipe is inclined relative to the storage tanks. A first filter plate is provided between the inlet of the guide pipe and the front chamber, and a second filter plate is provided between the outlet of the storage tanks and the rear chamber.

[0006] In some embodiments, a push plate is provided at the other end of the front chamber relative to the first filter plate, and a first telescopic mechanism is provided between the push plate and the cylinder, the first telescopic mechanism controlling the push plate to move back and forth in the front chamber.

[0007] In some embodiments, an electromagnet is provided on the plate.

[0008] In some embodiments, the storage tank has an arc-shaped tube extending into the rear chamber, the arc-shaped tube being connected to the middle of the second filter plate, and the filter plate being provided with mesh holes communicating with the arc-shaped tube.

[0009] In some embodiments, the storage tank outlet is provided with a first baffle, one end of which is hinged to the edge of the storage tank outlet. A guide plate is provided in the middle of the second filter plate, and a mesh is provided on the second filter plate relative to the guide plate. When the storage tank is rotated to the lower position, the first baffle covers the storage tank outlet. When the storage tank is rotated to the upper position, the first baffle overlaps the guide plate.

[0010] In some embodiments, a second telescopic mechanism is connected between the second filter plate and the partition plate.

[0011] In some embodiments, the outlet of the feed tube is provided with a second baffle, which is hinged to the outlet edge of the feed tube. When the storage tank is rotated to the top, the second baffle covers the outlet of the feed tube, and when the storage tank is rotated to the bottom, the second baffle opens the outlet of the feed tube.

[0012] Preparation method of raw materials for crack prevention in concrete structures of raw material pools:

[0013] S1: Material Selection: Prepare the materials needed to make concrete, including rock aggregate, ceramsite aggregate, lime powder, calcium aluminate cement, perlite aggregate, cementitious materials, ultrafine mineral powder and crack-resistant composite admixtures;

[0014] S2: Crack-resistant composite admixture molding: Crack-resistant composite admixture is prepared, including fine sand aggregate, anti-caking solvent, fly ash, accelerator, expansion agent and polypropylene fiber.

[0015] S3: Grinding: Using the admixture preparation equipment, the rock material, ceramsite aggregate, lime powder, calcium aluminate cement, perlite aggregate, cementitious materials, ultrafine mineral powder and crack-resistant composite admixture are crushed and pre-homogenized to form powder.

[0016] S4: Mixing and stirring: Put the various powdered materials that have been ground into a container with high speed and add a certain amount of water at the same time. Mix quickly while heating. After mixing is complete, take out the mixture.

[0017] S5: Calcination and preheating: The mixture is placed in the kiln and calcined into clinker. After calcination, preheating and decomposition are carried out to complete the preparation of large-volume crack-resistant concrete.

[0018] In some embodiments, the proportion of the rock material is 20-30%, the proportion of the ceramsite aggregate is 10-15%, the proportion of the lime powder is 8-15%, the proportion of the calcium aluminate cement is 8-14%, the proportion of the perlite aggregate is 6-12%, the proportion of the cementitious material is 6-12%, the proportion of the ultrafine mineral powder is 6-12%, and the proportion of the crack-resistant composite admixture is 10-18%.

[0019] In some embodiments, the rock material comprises 28%, the ceramsite aggregate comprises 10%, the lime powder comprises 10%, the calcium aluminate cement comprises 9%, the perlite aggregate comprises 6%, the cementitious material comprises 11%, the ultrafine mineral powder comprises 9%, and the crack-resistant composite admixture comprises 17%.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This invention provides a feed pipe and a storage tank that connect the front and rear chambers on the cylinder of a ball mill. This allows the raw material particles in the front chamber to enter the rear chamber through the feed pipe and storage tank, preventing the raw material from returning from the fine grinding section to the coarse grinding section and increasing the speed at which the raw material enters from one grinding section to another.

[0022] This invention is prepared by mixing rock material, ceramsite aggregate, lime powder, calcium aluminate cement, perlite aggregate, cementitious materials, ultrafine mineral powder and crack-resistant composite admixture in a specific ratio. The preparation is simple, increases the strength of concrete, reduces the occurrence of dry cracking and damage during use, improves the structure of concrete, and enhances the mechanical and durability properties of concrete. Attached Figure Description

[0023] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings. To illustrate the details and facilitate understanding of its principles, the drawings are not necessarily to scale, and similar reference numerals may describe similar components in different views. The accompanying drawings generally illustrate the embodiments discussed herein by way of example and not limitation. Wherein:

[0024] Figure 1 This is a schematic diagram of Example 1.

[0025] Figure 2 This is a schematic diagram of Example 5.

[0026] In the diagram, 1 is the cylinder; 2 is the partition plate; 3 is the coarse grinding steel ball; 4 is the fine grinding steel ball; 5 is the storage bucket; 6 is the feed pipe; 7 is the first filter plate; 8 is the second filter plate; 9 is the mesh; 10 is the push plate; 11 is the electromagnet; 12 is the arc-shaped tube; 13 is the first baffle; 14 is the guide plate; 15 is the second telescopic mechanism; 16 is the second baffle; and 17 is the first telescopic mechanism. Detailed Implementation

[0027] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments, and the following embodiments do not limit the invention covered by the claims. Furthermore, not all combinations of the features described in the embodiments are necessary for the inventive solution.

[0028] The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and embodiments. Example

[0029] like Figure 1 As shown, the raw material preparation equipment for crack prevention of concrete structure in the raw material pool includes a raw material crushing device, which is a ball mill. The ball mill includes a rotatable cylinder 1 and steel balls located inside the cylinder 1. The steel balls rotate with the cylinder 1, thereby crushing the granular raw materials inside the cylinder.

[0030] The inner cavity of the cylinder 1 is divided into adjacent front and rear chambers by a partition 2. The steel balls in the front chamber are coarse grinding steel balls 3, used for coarse grinding of the raw materials. The front chamber is equivalent to the coarse grinding section. The steel balls in the rear chamber are fine grinding steel balls 4, used for further fine grinding of the raw materials pulverized in the front chamber. The rear chamber is equivalent to the fine grinding section. That is, the steel balls in the front chamber are larger than the steel balls in the rear chamber. The raw material inlet can be located on the side wall or end of the front chamber, and the finished product outlet after grinding can be located on the side wall or end of the rear chamber. These can be set according to actual needs and will not be elaborated here.

[0031] The rear chamber sidewall is circumferentially connected to multiple storage tanks 5. The front chamber sidewall is provided with a guide pipe 6 communicating with the sidewall of the storage tank 5. The depth of the storage tank 5 is along the radial direction of the rear chamber. The guide pipe 6 is inclined relative to the storage tank 5. A first filter plate 7 is provided between the inlet of the guide pipe 6 and the front chamber to prevent the coarse grinding steel balls 3 from entering the guide pipe 6. A second filter plate 8 is provided between the outlet of the storage tank 5 and the rear chamber to prevent the fine grinding steel balls 4 from entering the storage tank 5.

[0032] As the cylinder 1 rotates, when the storage tank 5 rotates to the bottom of the cylinder 1, the raw material particles ground in the front chamber pass through the mesh 9 on the first filter plate 7 and enter the guide pipe 6, and then enter the storage tank 5 along the guide pipe 6. When the storage tank 5 rotates to the top of the cylinder 1, the raw material in the storage tank 5 falls downward into the rear chamber.

[0033] A push plate 10 is provided at the other end of the front chamber relative to the first mesh plate 9. A first telescopic mechanism 17 is provided between the push plate 10 and the cylinder 1. The first telescopic mechanism 17 controls the push plate 10 to move back and forth in the front chamber. The length of the first telescopic mechanism 17 extends and retracts, thereby causing the push plate 10 to move axially, thereby adjusting the size of the front chamber to suit the use of different amounts of raw materials. It also helps to push the raw material particles toward the first filter plate 7, so that more raw material particles can pass through the first filter plate 7.

[0034] An electromagnet 11 is provided on the plate. By making the electromagnet 11 generate a magnetic field, the steel ball is attracted to the push plate 10, thereby moving the raw material particles to the direction of the first filter plate 7. Then the push plate 10 moves toward the first filter plate 7 so that more raw material particles can pass through the first filter plate 7 and fall into the feed pipe 6.

[0035] The storage tank 5 has an arc-shaped tube 12 extending into the rear chamber. The arc-shaped tube 12 is connected to the middle of the second filter plate 8. The second filter plate 8 is provided with mesh holes 9 communicating with the arc-shaped tube 12. Raw material particles can pass through the arc-shaped tube 12 and enter the rear chamber through the mesh holes 9 on the second filter plate 8. The mesh holes 9 are located on the second filter plate 8, and the distance between the mesh holes 9 and the edge of the second filter plate 8 is greater than the stacking height of the fine grinding steel balls 4 in the rear chamber. This avoids the steel balls from affecting the passage of raw materials through the mesh holes 9, and also prevents raw material particles in the rear chamber from entering the arc-shaped tube 12 through the mesh holes 9.

[0036] The outlet of the feed pipe 6 is provided with a second baffle 16. The second baffle 16 is hinged to the outlet edge of the feed pipe 6. When the storage tank 5 is rotated to the top, the second baffle 16 covers the outlet of the feed pipe 6, thereby blocking the outlet of the feed pipe 6 and preventing the raw material particles in the storage tank 5 from entering the feed pipe 6.

[0037] When the storage tank 5 is rotated to the lower position, the second baffle 16 rotates downward, causing the outlet of the guide pipe 6 to be opened, thereby allowing the raw material in the guide pipe 6 to slide into the storage tank 5.

[0038] The preparation method of the raw material for crack prevention in the concrete structure of the raw material pool is as follows:

[0039] S1: Material Selection: Prepare the materials needed to make concrete, including rock aggregate, ceramsite aggregate, lime powder, calcium aluminate cement, perlite aggregate, cementitious materials, ultrafine mineral powder and crack-resistant composite admixtures;

[0040] S2: Crack-resistant composite admixture molding: Crack-resistant composite admixture is prepared, including fine sand aggregate, anti-caking solvent, fly ash, accelerator, expansion agent and polypropylene fiber.

[0041] S3: Grinding: Using the aforementioned crack-resistant raw material preparation equipment, the rock material, ceramsite aggregate, lime powder, calcium aluminate cement, perlite aggregate, cementitious materials, ultrafine mineral powder and crack-resistant composite admixture are crushed and pre-homogenized to form powder.

[0042] S4: Mixing and stirring: Put the various powdered materials that have been ground into a container with high speed and add a certain amount of water at the same time. Mix quickly while heating. After mixing is complete, take out the mixture.

[0043] S5: Calcination and preheating: The mixture is placed in the kiln and calcined into clinker. After calcination, preheating and decomposition are carried out to complete the preparation of large-volume crack-resistant concrete.

[0044] Furthermore, the proportion of rock aggregate is 24%, the proportion of ceramsite aggregate is 13%, the proportion of lime powder is 13%, the proportion of calcium aluminate cement is 10%, the proportion of perlite aggregate is 8%, the proportion of cementitious materials is 10%, the proportion of ultrafine mineral powder is 9%, and the proportion of crack-resistant composite admixture is 13%.

[0045] Furthermore, the proportion of fine sand aggregate is 25-40%, the proportion of anti-caking solvent is 15-25%, the proportion of fly ash is 10-20%, the proportion of accelerator is 10-18%, the proportion of expansion agent is 12-26%, and the proportion of polypropylene fiber is 10-22%.

[0046] Furthermore, the proportion of fine sand aggregate is 22%, the proportion of anti-caking solvent is 16%, the proportion of fly ash is 16%, the proportion of accelerator is 16%, the proportion of expansion agent is 15%, and the proportion of polypropylene fiber is 15%.

[0047] The final crack resistance efficiency of the large-volume crack-resistant concrete obtained at this point is 92%.

[0048] Example 2

[0049] The proportions of rock aggregate are 20-30%, ceramsite aggregate is 10-15%, lime powder is 8-15%, calcium aluminate cement is 8-14%, perlite aggregate is 6-12%, cementitious materials are 6-12%, ultrafine mineral powder is 6-12%, and crack-resistant composite admixture is 10-18%.

[0050] Furthermore, the proportion of rock aggregate is 28%, the proportion of ceramsite aggregate is 10%, the proportion of lime powder is 10%, the proportion of calcium aluminate cement is 9%, the proportion of perlite aggregate is 6%, the proportion of cementitious materials is 11%, the proportion of ultrafine mineral powder is 9%, and the proportion of crack-resistant composite admixture is 17%.

[0051] Furthermore, the proportion of fine sand aggregate is 25-40%, the proportion of anti-caking solvent is 15-25%, the proportion of fly ash is 10-20%, the proportion of accelerator is 10-18%, the proportion of expansion agent is 12-26%, and the proportion of polypropylene fiber is 10-22%.

[0052] Furthermore, the proportion of fine sand aggregate is 24%, the proportion of anti-caking solvent is 15%, the proportion of fly ash is 11%, the proportion of accelerator is 12%, the proportion of expansion agent is 18%, and the proportion of polypropylene fiber is 20%.

[0053] At this point, the final crack resistance efficiency of the large-volume crack-resistant concrete is 98%.

[0054] Example 3

[0055] The proportions of rock aggregate are 20-30%, ceramsite aggregate is 10-15%, lime powder is 8-15%, calcium aluminate cement is 8-14%, perlite aggregate is 6-12%, cementitious materials are 6-12%, ultrafine mineral powder is 6-12%, and crack-resistant composite admixture is 10-18%.

[0056] Furthermore, the proportion of rock aggregate is 24%, the proportion of ceramsite aggregate is 13%, the proportion of lime powder is 13%, the proportion of calcium aluminate cement is 10%, the proportion of perlite aggregate is 8%, the proportion of cementitious materials is 10%, the proportion of ultrafine mineral powder is 9%, and the proportion of crack-resistant composite admixture is 13%.

[0057] Furthermore, the proportion of fine sand aggregate is 25-40%, the proportion of anti-caking solvent is 15-25%, the proportion of fly ash is 10-20%, the proportion of accelerator is 10-18%, the proportion of expansion agent is 12-26%, and the proportion of polypropylene fiber is 10-22%.

[0058] Furthermore, the proportion of fine sand aggregate is 24%, the proportion of anti-caking solvent is 15%, the proportion of fly ash is 11%, the proportion of accelerator is 12%, the proportion of expansion agent is 18%, and the proportion of polypropylene fiber is 20%.

[0059] The final crack resistance efficiency of the large-volume crack-resistant concrete obtained at this point is 96%.

[0060] Example 4

[0061] The proportions of rock aggregate are 20-30%, ceramsite aggregate is 10-15%, lime powder is 8-15%, calcium aluminate cement is 8-14%, perlite aggregate is 6-12%, cementitious materials are 6-12%, ultrafine mineral powder is 6-12%, and crack-resistant composite admixture is 10-18%.

[0062] Furthermore, the proportion of rock aggregate is 28%, the proportion of ceramsite aggregate is 10%, the proportion of lime powder is 10%, the proportion of calcium aluminate cement is 9%, the proportion of perlite aggregate is 6%, the proportion of cementitious materials is 11%, the proportion of ultrafine mineral powder is 9%, and the proportion of crack-resistant composite admixture is 17%.

[0063] Furthermore, the proportion of fine sand aggregate is 25-40%, the proportion of anti-caking solvent is 15-25%, the proportion of fly ash is 10-20%, the proportion of accelerator is 10-18%, the proportion of expansion agent is 12-26%, and the proportion of polypropylene fiber is 10-22%.

[0064] Furthermore, the proportion of fine sand aggregate is 22%, the proportion of anti-caking solvent is 16%, the proportion of fly ash is 16%, the proportion of accelerator is 16%, the proportion of expansion agent is 15%, and the proportion of polypropylene fiber is 15%.

[0065] During the production process, the materials required for concrete preparation are first prepared, including rock aggregate, ceramsite aggregate, lime powder, calcium aluminate cement, perlite aggregate, cementitious materials, ultrafine mineral powder, and crack-resistant composite admixtures. The crack-resistant composite admixture is then formed by preparing fine sand aggregate, anti-caking solvent, fly ash, accelerator, expanding agent, and polypropylene fiber. The rock aggregate, ceramsite aggregate, lime powder, calcium aluminate cement, perlite aggregate, cementitious materials, ultrafine mineral powder, and crack-resistant composite admixtures are pulverized and pre-homogenized into powder. The various powdered materials are then placed in a high-speed mixer. A certain amount of water is added to the mixing container for rapid mixing. Heating is performed simultaneously with high-speed mixing. After mixing, the mixture is removed and placed in a kiln for calcination into clinker. After calcination, preheating and decomposition are carried out, thus completing the preparation of large-volume crack-resistant concrete. This concrete is prepared by mixing rock aggregate, ceramsite aggregate, lime powder, calcium aluminate cement, perlite aggregate, cementitious materials, ultrafine mineral powder, and crack-resistant composite admixtures in a specific ratio. The preparation is simple, increases the strength of the concrete, reduces cracking during use, improves the concrete structure, and enhances its mechanical and durability properties.

[0066] Example 5

[0067] like Figure 2 As shown, unlike the above embodiment, the outlet of the storage tank 5 has an inwardly inclined rim relative to the side wall of the cylinder 1, so that the rim is inclined rearward in the axial direction. The outlet of the storage tank 5 is provided with a first baffle 13, one end of which is hinged to the edge of the outlet of the storage tank 5. A guide plate 14 is provided in the middle of the second filter plate 8, and a mesh 9 is provided on the second filter plate 8 relative to the guide plate 14. When the storage tank 5 is rotated to the lower position, the first baffle 13 covers the outlet of the storage tank 5. Under the action of the inclined rim, the first baffle 13 is inclined downward, thereby preventing raw material particles in the rear chamber from entering the storage tank 5.

[0068] When the storage hopper 5 rotates to the upper position, the first baffle 13 overlaps the guide plate 14, causing the material falling from the storage hopper 5 to flow along the first baffle 13 and the guide plate 14 toward the mesh 9, thereby entering the chamber behind the second filter plate 8 through the mesh 9. The first baffle 13 and the guide plate 14 essentially form a guide ramp, guiding the raw material particles to the mesh 9.

[0069] The second filter plate 8 is connected to the partition plate 2 by a second telescopic mechanism 15, so that the size of the space where the fine grinding steel balls are located can be adjusted by moving the second filter plate 8 axially, so as to be suitable for grinding different amounts of raw materials.

[0070] The outlet of the feed pipe 6 is provided with a second baffle 16. The second baffle 16 is hinged to the outlet edge of the feed pipe 6. When the storage tank 5 is rotated to the top, the second baffle 16 covers the outlet of the feed pipe 6, thereby blocking the outlet of the feed pipe 6 and preventing the raw material particles in the storage tank 5 from entering the feed pipe 6.

[0071] When the storage tank 5 is rotated to the lower position, the second baffle 16 rotates downward, causing the outlet of the guide pipe 6 to be opened, thereby allowing the raw material in the guide pipe 6 to slide into the storage tank 5.

[0072] The first telescopic mechanism and the second telescopic mechanism can be, for example, various telescopic control mechanisms that can achieve length adjustment, such as cylinders and electric cylinders.

[0073] The specific embodiments described herein are merely illustrative examples illustrating the spirit of the invention. Those skilled in the art can make various modifications or additions to the described embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0074] Although this document uses a number of technical terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention. The order of actions, steps, etc., in the apparatus and methods shown in the specification and drawings can be implemented in any order unless otherwise expressly specified, and provided that the output of a preceding process is not used in a subsequent process. Similar sequential terms used for descriptive convenience (e.g., "firstly," "next," "secondly," "again," "then," etc.) do not imply that the actions must be performed in such an order.

[0075] Those skilled in the art will understand that all directional references (e.g., above, below, up, down, down, top, bottom, left, right, vertical, horizontal, etc.) are used descriptively in the drawings to aid the reader's understanding and do not imply (e.g., a limitation on the scope of the invention as defined by the appended claims) a limitation on the location, orientation, or use of the invention, but are merely for the purpose of facilitating the description of this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation. The directional terms "inside" and "outside" refer to inside or outside relative to the outline of the respective component itself.

[0076] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0077] Additionally, some vague terms (e.g., substantially, certain, generally, etc.) may refer to slight inaccuracies or minor deviations in conditions, quantities, values, or dimensions, some of which are within manufacturing tolerances or limits. It should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components; unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

Claims

1. Raw material preparation equipment for crack-resistant concrete structures in raw material pools, including a raw material crushing device, characterized in that, The raw material crushing device is a ball mill, which includes a cylinder and steel balls located inside the cylinder. The inner cavity of the cylinder is divided into a front chamber and a rear chamber by a partition. The steel balls in the front chamber are coarse grinding steel balls, and the steel balls in the rear chamber are fine grinding steel balls. Multiple storage bins are circumferentially connected to the side wall of the rear chamber. A guide pipe communicating with the side wall of the storage bins is provided on the side wall of the front chamber. The depth of the storage bins is along the radial direction of the rear chamber. The guide pipe is inclined relative to the storage bins, and the inlet of the guide pipe is connected to the... A first filter plate is provided between the front chambers, and a second filter plate is provided between the storage tank outlet and the rear chamber. A first baffle is provided at the storage tank outlet, with one end of the first baffle hinged to the edge of the storage tank outlet. A guide plate is provided in the middle of the second filter plate, and mesh holes are provided on the second filter plate relative to the guide plate. When the storage tank is rotated to the lower position, the first baffle covers the storage tank outlet, and when the storage tank is rotated to the upper position, the first baffle overlaps the guide plate.

2. The raw material preparation equipment for crack-resistant concrete structures in the raw material pool according to claim 1, characterized in that, A push plate is provided at the other end of the front chamber relative to the first filter plate. A first telescopic mechanism is provided between the push plate and the cylinder. The first telescopic mechanism controls the push plate to move back and forth in the front chamber.

3. The raw material preparation equipment for crack-resistant concrete structures in the raw material pool according to claim 2, characterized in that, An electromagnet is installed on the push plate.

4. The raw material preparation equipment for crack-resistant concrete structures in the raw material pool according to claim 1, characterized in that, A second telescopic mechanism is connected between the second filter plate and the partition plate.

5. The raw material preparation equipment for crack-resistant concrete structures in the raw material pool according to claim 1, characterized in that, The outlet of the feed tube is provided with a second baffle, which is hinged to the outlet edge of the feed tube. When the storage tank is rotated to the top, the second baffle covers the outlet of the feed tube. When the storage tank is rotated to the bottom, the second baffle opens the outlet of the feed tube.

6. A method for preparing anti-crack raw materials for concrete structures in raw material pools, characterized in that: S1: Material Selection: Prepare the materials needed to make concrete, including rock aggregate, ceramsite aggregate, lime powder, calcium aluminate cement, perlite aggregate, cementitious materials, ultrafine mineral powder and crack-resistant composite admixtures; S2: Crack-resistant composite admixture molding: Crack-resistant composite admixture is prepared, including fine sand aggregate, anti-caking solvent, fly ash, accelerator, expansion agent and polypropylene fiber. S3: Grinding: Using the anti-crack raw material preparation equipment as described in any one of claims 1 to 5, the rock material, ceramsite aggregate, lime powder, calcium aluminate cement, perlite aggregate, cementitious materials, ultrafine mineral powder and anti-crack composite admixture are crushed and pre-homogenized to grind the raw materials into powder. S4: Mixing and stirring: Put the various powdered materials that have been ground into a container with high speed and add a certain amount of water at the same time. Mix quickly while heating. After mixing is complete, take out the mixture. S5: Calcination and preheating: The mixture is placed in the kiln and calcined into clinker. After calcination, preheating and decomposition are carried out to complete the preparation of large-volume crack-resistant concrete.

7. The method for preparing anti-crack raw materials for concrete structures in raw material pools according to claim 6, characterized in that, The rock material comprises 20-30%, the ceramsite aggregate comprises 10-15%, the lime powder comprises 8-15%, the calcium aluminate cement comprises 8-14%, the perlite aggregate comprises 6-12%, the cementitious material comprises 6-12%, the ultrafine mineral powder comprises 6-12%, and the crack-resistant composite admixture comprises 10-18%.

8. The method for preparing anti-crack raw materials for concrete structures in raw material pools according to claim 7, characterized in that, The proportion of the rock material is 28%, the proportion of the ceramsite aggregate is 10%, the proportion of the lime powder is 10%, the proportion of the calcium aluminate cement is 9%, the proportion of the perlite aggregate is 6%, the proportion of the cementitious material is 11%, the proportion of the ultrafine mineral powder is 9%, and the proportion of the crack-resistant composite admixture is 17%.

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