Cold-bonding pelletizer capable of screening

Abstract

The utility model belongs to the field of rolling pelletizers, and discloses a cold-bonding pelletizer capable of screening, which realizes the integration of pelletizing and screening of aggregates by arranging a feeding hole, an extruding structure, a screening structure and a collecting structure which are sequentially connected from top to bottom. A polygonal prism roller is adopted in the extrusion structure, and a plurality of grooves with different gradations and irregular shapes are formed, so that aggregate particles with different gradations can be formed in the extrusion process; and the screening structure is provided with a plurality of layers of circular hole screens with different grades, and the sizes of through holes are gradually reduced from top to bottom, so that aggregate particles with different sizes can be effectively separated. By adopting the pelletizer, the problem that a traditional pelletizer can only produce aggregate of the same grade is solved, the aggregate meeting the requirements of all grades required by concrete preparation can be directly produced, and the production efficiency and the concrete compactness are remarkably improved, so that the requirement of preparing high-quality concrete is met.

Description

Technical Field

[0001] This utility model belongs to the technical field of roller press granulators, specifically relating to a cold-bonded granulator that can be screened. Background Technology

[0002] With rapid social development and the advancement of modernization and urbanization, the construction of massive infrastructure projects has led to a surge in the consumption of natural aggregates, making them the second most consumed natural resource. Simultaneously, the large-scale accumulation of solid waste occupies land, pollutes water sources, and harms human health, placing immense pressure on society's human, material, and financial resources. Therefore, the development of artificial aggregates is receiving increasing attention. Artificial aggregates typically use solid waste as raw materials, offering a new solution to the problems of natural resource depletion and solid waste pollution.

[0003] Roller presses are widely used in the preparation of artificial aggregates. They can compress powdered materials into aggregates of uniform particle size using rollers, offering convenient operation and low energy consumption. However, traditional roller presses have several drawbacks. In particular, due to the cylindrical roller design, the contact surface between the two rollers during the extrusion process is only a line, resulting in insufficient density and reduced strength in the produced aggregates. Furthermore, aggregates produced using traditional methods are spherical in diameter. On one hand, spherical aggregates, due to their smooth surface and reduced intergranular bonding, not only have poor durability but also weaker adhesion to cement paste and poorer anti-segregation properties, making them unsuitable for high-strength concrete. On the other hand, traditional methods can only produce aggregates of the same gradation, while concrete preparation requires aggregates of different gradations to be mixed in appropriate proportions to improve concrete density. Clearly, aggregates produced by traditional granulators cannot meet the requirements for the various gradations needed for concrete preparation.

[0004] It is evident that existing roller press granulators cannot produce aggregates with different gradations, making it difficult to meet the requirements for concrete preparation. Utility Model Content

[0005] This invention provides a cold-bonded, sieveable granulator to solve the technical problem that existing roller press granulators cannot produce aggregates of different gradations, making it difficult to meet the requirements for concrete preparation.

[0006] To achieve the above objectives, the present invention adopts the following technical content:

[0007] A cold-bonded, sieveable granulator, comprising a granulation section;

[0008] The granulation section includes a feed inlet, an extrusion structure, a screening structure, and a collection structure connected in sequence from top to bottom;

[0009] The extrusion structure includes at least one set of two rollers arranged symmetrically, with an extrusion space formed between the two rollers;

[0010] The roller is a polygonal prism, and multiple grooves with different gradations and irregular shapes are formed on the roller.

[0011] The screening structure includes multiple layers of circular hole screens with different gradations arranged from top to bottom; wherein the through-hole size of the circular hole screens gradually decreases from the uppermost to the lowermost layer.

[0012] The perforated screen is located below the drum, and its output end is connected to the collection structure.

[0013] Furthermore, a heated spiral track is provided between the extrusion structure and the screening structure. The heated spiral track is used to heat and solidify the aggregate and to spread out aggregates of different particle sizes.

[0014] Furthermore, a rotating structure is provided at one end of the perforated screen; the rotating structure includes a rotating body and a rotating rod, and one end of the perforated screen is attached to the rotating rod; twisting the rotating body can drive the perforated screen from a horizontal state to an inclined state through the rotating rod; when the perforated screen moves to the inclined state, the aggregate slides from the perforated screen to the collection structure.

[0015] Furthermore, the roller includes an inner cylinder and an outer cylinder sleeved on the outside of the inner cylinder, with a groove formed on the outer surface of the outer cylinder; the inner cylinder is adapted to and connected to the serrated structure of the outer cylinder through a snap-fit ​​structure; both ends of the inner cylinder are rotatably mounted on the extrusion structure body.

[0016] Furthermore, it also includes a pre-mixed portion;

[0017] The premixing section includes a premixing platform; a lifting spring is connected above the premixing platform; a premixing cylinder is provided on the top of the lifting spring; and an automatic stirring head is installed inside the premixing cylinder.

[0018] Furthermore, it also includes an aggregate classification section;

[0019] The aggregate sorting section includes a weighing conveyor belt; one end of the weighing conveyor belt is connected to the collection structure, and the other end is connected to a collection cylinder.

[0020] Furthermore, the collection structure includes a second collection drawer and a plurality of first collection drawers; each first collection drawer is correspondingly arranged with each layer of perforated screen and connected to the output end of the perforated screen; the second collection drawer is arranged below the bottommost perforated screen.

[0021] Furthermore, the inlet of the first aggregate drawer is set at an inclined angle.

[0022] Furthermore, the granulation section also includes a cleaning structure; the cleaning structure includes a wire brush arranged parallel to the roller.

[0023] Furthermore, both the extrusion structure and the screening structure are provided with magnetic doors on their outer walls.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] This invention provides a cold-bonded, screenable granulator. By configuring a feed inlet, extrusion structure, screening structure, and collection structure connected sequentially from top to bottom, it integrates aggregate granulation and screening. The extrusion structure uses a polygonal prism roller with multiple grooves of different gradations and irregular shapes, enabling the formation of aggregate particles of different gradations during extrusion. The screening structure uses multiple layers of circular-hole screens with different gradations, and the aperture size gradually decreases from top to bottom, ensuring effective separation of aggregate particles of different sizes. This granulator not only solves the problem of traditional granulators only producing aggregates of the same gradation, but also directly produces aggregates that meet the various gradation requirements for concrete preparation, significantly improving production efficiency and concrete density, thus meeting the needs for producing high-quality concrete.

[0026] Preferably, in this invention, the heating spiral conveyor belt not only facilitates the heating and solidification of the aggregate but also evenly spreads aggregates of different particle sizes, improving screening efficiency and aggregate quality. This design enhances the functionality and practicality of the pelletizer.

[0027] Preferably, in this invention, the introduction of a rotating structure allows the perforated screen to easily transition from a horizontal to an inclined state, facilitating the sliding and collection of aggregates. This design improves screening efficiency, reduces manual intervention, and enhances the automation level of the equipment.

[0028] Preferably, in this invention, the design of the inner and outer cylinders, as well as the snap-fit ​​connection method, makes the roller structure more flexible and detachable. This facilitates equipment maintenance and reduces repair costs. Simultaneously, the rotatable design of the inner cylinder improves the stability and durability of the extrusion structure.

[0029] Preferably, in this invention, the addition of a premixing component allows for preliminary mixing of the aggregates before they enter the extrusion structure, improving the granulation effect and the uniformity of the aggregate quality. The lifting spring and automatic stirring head further enhance the flexibility and efficiency of the premixing process.

[0030] Preferably, in this invention, the aggregate sorting section enables the precise classification and collection of aggregates with different gradations. The combined use of the weighing conveyor belt and the collection cylinder achieves automated aggregate sorting and collection, improving production efficiency and accuracy.

[0031] Preferably, in this invention, the arrangement of multiple first aggregate drawers and second aggregate drawers allows for the separate collection of aggregates with different gradations, meeting the diverse needs of concrete preparation. Simultaneously, the inclined inlet design of the first aggregate drawer facilitates the smooth flow of aggregates, reducing blockages and accumulation.

[0032] Preferably, in this invention, the inclined inlet design of the first aggregate drawer further improves the aggregate sliding efficiency and reduces aggregate accumulation and blockage within the drawer. This design optimizes the aggregate collection process and improves the operating efficiency of the equipment.

[0033] Preferably, in this invention, the cleaning structure helps to remove residual aggregate and impurities from the roller, maintaining the cleanliness and hygiene of the equipment. The parallel arrangement of the wire brush and the roller ensures the uniformity and effectiveness of the cleaning, extending the service life of the equipment.

[0034] Preferably, in this invention, the suction door allows the outer walls of the extrusion and screening structures to be easily opened and closed, facilitating equipment maintenance and upkeep. This design enhances the maintainability and ease of use of the equipment, improving its overall performance. Attached Figure Description

[0035] Figure 1 A schematic diagram of the structure of a cold-bonding, sieveable granulator provided for an embodiment of this utility model;

[0036] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;

[0037] Figure 3 for Figure 1 Enlarged view of a section at point B in the middle;

[0038] Figure 4 A schematic diagram of the premixing section of a cold-bonding, sieveable granulator provided in an embodiment of this utility model;

[0039] Figure 5 This is a schematic diagram of the aggregate sorting section of a cold-bonded, sieveable granulator provided in an embodiment of the present invention.

[0040] Figure label:

[0041] 1. Premixing table; 2. Lifting spring; 3. Premixing drum; 4. Premixing start button; 5. Drum; 6. Heated spiral conveyor belt; 7. Hole sieve; 8. First collection drawer; 9. Second collection drawer; 10. Wire brush; 11. Outer cylinder; 12. Inner cylinder; 13. Groove; 14. Fastening bolt; 15. Snap-fit ​​structure; 16. Through hole; 17. Rotating structure; 18. Rotating body; 19. Rotating rod; 20. Rotating button; 21. Magnetic door; 22. Feed inlet; 23. Motor; 24. Switch button; 25. Weighing conveyor belt; 26. Display screen; 27. Collection drum; 28. Automatic mixing head. Detailed Implementation

[0042] To make the technical problem solved by this utility model, the technical solution, and the beneficial effects clearer, the following specific embodiments provide a further detailed description of this utility model. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0046] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0047] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0048] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] The present invention will now be described in further detail with reference to the accompanying drawings:

[0050] like Figure 1 As shown, this embodiment provides a cold-bonded sieving granulator, including: a premixing table 1, a lifting spring 2, a premixing drum 3, a premixing start button 4, a drum 5, a heated spiral conveyor belt 6, a round hole screen 7, a first collection drawer 8, a second collection drawer 9, a wire brush 10, an outer cylinder 11, an inner cylinder 12, a groove 13, fastening bolts 14, a snap-fit ​​structure 15, a through hole 16, a rotating structure 17, a rotating body 18, a rotating rod 19, a rotating button 20, a magnetic door 21, a feed inlet 22, a motor 23, a switch button 24, a weighing conveyor belt 25, a display screen 26, a collection drum 27, and an automatic mixing head 28.

[0051] For example, this cold-bonded sieveable granulator includes a premixing section, a granulation section, and an aggregate sorting section.

[0052] In this embodiment, the premixing section includes a premixing platform 1, a lifting spring 2, a premixing drum 3, and a premixing start button 4. The lifting spring 2 is fixed on the premixing platform 1, and the premixing drum 3 is installed on the top; the premixing start button 4 controls the premixing operation.

[0053] The granulation section includes an extrusion structure, a curing structure, a sieving structure, a collection structure, and a cleaning structure.

[0054] The aggregate sorting section includes a weighing conveyor belt 25, three display screens 26, and a collection cylinder 27.

[0055] The extrusion structure includes two symmetrical rollers 5; the curing structure includes a heated spiral conveyor belt 6; the screening structure includes three replaceable, tiltable, and tiltable round-hole screens 7 with different gradations; the collection structure includes four sliding drawers on the side, of which the three first collection drawers 8 collect the granulated aggregates screened out, and the bottom second collection drawer 9 is used to collect the residues from the granulation process for the secondary use of waste materials; the cleaning structure includes two rows of steel wire brushes 10 parallel to the extrusion cylinders, which play a cleaning role for the two extrusion cylinders.

[0056] For example, the premixing drum 3 is equipped with an automatic stirring head 28, which is used to thoroughly mix the raw materials.

[0057] like Figure 4 As shown, for example, the premixing part only requires pouring the weighed solid waste powder into the premixing drum 3, turning on the premixing start button 4, and after thorough mixing, the lifting spring 2 will automatically extend, thereby driving the powder in the premixing drum to be poured into the feed inlet at a uniform speed, and then the spring will retract to return to its original position.

[0058] For example, the roller 5 includes an outer cylinder 11 and an inner cylinder 12, wherein the outer cylinder is provided with an integral groove 13, the groove 13 is designed in the shape of natural pebbles (irregular shape), so that the artificial aggregate particles fit the actual coarse aggregate more closely during use; and the dimensions of the multiple grooves 13 are set in a multi-stage configuration.

[0059] like Figure 3 As shown, for example, the inner cylinder 12 is connected to the granulator body by fastening bolts 14. A snap-fit ​​structure 15 is provided around the inner cylinder 12 to facilitate the replacement of the outer cylinder 11. At the same time, the outer cylinder 11 is also provided with a serrated structure to enhance the fastening force between the inner and outer cylinders.

[0060] For example, the curing structure is a heated spiral conveyor belt 6, distributed between the extrusion structure and the screening structure. On the one hand, the purpose of setting the heated spiral conveyor belt 6 is to heat and cure the aggregate during the conveying process, so that it can obtain initial strength and prevent breakage loss during the screening process; on the other hand, the spiral design can spread particles of different sizes on the conveyor belt, thereby avoiding large particles clogging the round hole screen and preventing small particles from continuing to be screened.

[0061] For example, the three-stage circular hole screen 17 is provided with through holes 16 adapted to the gradation. The circular hole screen is connected to the granulator body through a rotating structure 17. The circular hole screen and the rotating structure are connected by fastening bolts or by direct overlap.

[0062] like Figure 2 As shown, exemplarily, the rotating structure includes a rotating body 18 and a rotating rod 19, and the rotating structure is controlled by a rotating button 20.

[0063] For example, the rotary button 20 can be both rotated and pressed. Rotation controls the screening speed, while pressing tilts the round hole screen downwards at 45°, sending the particles into the first collection drawer 8.

[0064] For example, the 45° incline of the first aggregate drawer 8 allows the aggregate to roll smoothly into the drawer, reducing aggregate breakage and loss due to gravity and effectively collecting and blocking the aggregate. In addition, each of the three first aggregate drawers 8 has a square discharge port so that the aggregate falls into the weighing conveyor belt 25 when the first aggregate drawer is pulled out.

[0065] like Figure 5 As shown, for example, the weighing conveyor belt 25 is provided with three belts, each corresponding to one of the three first aggregate drawers 8, which can automatically detect the weight of the aggregate on the conveyor belt.

[0066] For example, three displays 26 control three drawers 8 and a weighing conveyor belt 25 respectively; the displays 26 are touch-sensitive smart displays. By inputting the required particle size mass into the corresponding display and clicking "OK", the first aggregate drawer 8 will automatically pull out and open its bottom outlet. When the conveyor belt detects that the weight has reached the set value, the drawer will automatically close its outlet and return to its original position.

[0067] For example, a material bag can be placed inside the collection cylinder 27. After collecting the aggregate from the conveyor belt, the whole bag can be cured. After curing for 28 days, it can be directly used to pour concrete blocks.

[0068] For example, the steel wire brush 10 is distributed in parallel on both sides above the two rollers, which makes it easy to clean the outer cylinder after granulation. The use of steel wire material can also avoid wear caused by long-term friction.

[0069] For example, both the periphery of the extrusion structure and the periphery of the screening structure are provided with switchable magnetic doors 21 as outlets for component replacement, facilitating the replacement of the drum and the round hole screen.

[0070] For example, the feed inlet 22 is an open trapezoidal quadrangular prism, located above the entire extrusion structure body.

[0071] For example, motor 23 is distributed on the entire side to provide power for the entire granulation process.

[0072] For example, the overall switch button 24 is divided into a start button and an end button. The one marked with "S" is the start button, and the one marked with "E" is the end button.

[0073] It should be noted that the granulator provided by this utility model integrates granulation, collection, and screening to achieve convenient and efficient granulation. Its main components include three core parts: premixing, granulation, and aggregate sorting.

[0074] In the granulation section, the extrusion structure includes two rollers 5. The two rollers are perfectly symmetrical, allowing for better extrusion and resulting in denser particles from the raw material powder. Simultaneously, grooves 13, integrally distributed around the outer cylinder wall with the outer cylinder 10, are designed in the shape of natural pebbles with various gradations. This optimized aggregate particle shape benefits from the increased interlocking force due to the sharp edges, and the graded particles overcome the uniform size limitation of traditional granulation. Smaller gradations better fill the gaps between larger particles, allowing the artificial aggregate to fully function in the concrete test blocks. The rollers are bolted to the machine body for easy disassembly and installation. The connection between the outer cylinder 11 and the inner cylinder 12 is carefully designed as a snap-fit ​​connection. Matching snap-fit ​​structures 15 are provided around the inner and outer circumferences of the outer and inner cylinders to reinforce the connection stability. Furthermore, to prevent wear on the outer cylinder 11 during long-term pressurization, the snap-fit ​​structures 15 also facilitate easy replacement of the outer cylinder 11, providing flexible disassembly.

[0075] like Figure 2 As shown, in the screening structure, the perforated screen 7 is connected to the rotating body 18 of the rotating structure 17 by an overlapping connection, and one perforated screen is connected to three rotating rods 19. Rotating the rotation button 20 simultaneously controls nine rotating structures 17 to drive three perforated screens 17 to screen simultaneously. As the rotating body 18 rotates, it drives the rotating rods 19 to rotate, rotating the rotating rods 19 from the horizontal low point to the vertical high point. When the rotating rods 19 are at the horizontal low point, the perforated screen 7 is in a horizontal state. After being lifted by the rotating rods 19, one side of the perforated screen 7 is raised at a certain angle, while the other end remains in the same position, thus achieving tilting. During the rotation process, the rotating rods 19 rotate around the rotating body 17. After a certain period of screening is completed, pressing the rotation button will tilt the rotating structure by 45°, causing the perforated screen 17 to tilt towards the first aggregate drawer 8, thereby completing the screening and collection of aggregates.

[0076] The collection structure consists of four aggregate drawers. The top three first aggregate drawers 8 collect aggregates of three different particle sizes, and the ends of the drawers are designed to angle upwards at 45° to connect with the 45° downward-sloping circular screen after screening, ensuring smooth entry of the aggregates. The bottom second aggregate drawer 9 can recycle powdered aggregate residues for reuse. The arrangement of the aggregate drawers makes the overall aggregate collection more convenient and efficient.

[0077] The cleaning structure of this granulator consists of two rows of steel wire brushes 10 parallel to the roller cylinder. This design feature enables the granulator to quickly clean the residue on the outer cylinder as the roller rotates, even when material is stuck in the groove, thus meeting certain cleaning requirements and demonstrating its broad application prospects.

[0078] In this embodiment, the usage process of the extrusion roller 5 in the granulation section is further described:

[0079] When the granulator is started, the inner cylinder 12 is connected to the outer cylinder 11 via a snap-fit ​​structure 15, which drives the two prismatic outer cylinders 11 to roll towards each other. The two corresponding sides squeeze and compact the solid waste raw material into the symmetrical irregular grooves 13, each side having grooves 13 with different gradations. After granulation is completed, press the snap-fit ​​button to release the snap-fit, remove the outer cylinder 11, and replace the outer cylinder 11 as needed.

[0080] The specific working process of this granulator is as follows:

[0081] Step 1: Weigh out a certain amount of each required solid waste powder and add it to the premixing drum 3. Turn on the premixing start button 4. After the raw materials are fully mixed as the automatic stirring head 28 rotates, the lifting spring 2 will automatically rise and drive the premixing drum 3 to pour into the feed inlet 22 at a uniform speed. After the process is completed, it will automatically return to its original position.

[0082] Step 2: While pouring the material, press the switch button 24 of the granulator. The two symmetrical rollers 5 will start rolling and extruding, and granulation will begin.

[0083] Step 3: The freshly produced particles roll onto the heated spiral conveyor belt 6. As the aggregate initially solidifies, it is conveyed onto the perforated screen 7 along the path of the heated spiral conveyor belt 6.

[0084] Step 4: While adjusting the speed by turning the rotary knob 20, start the screening operation. After a certain period of time, press the rotary knob. The rotating body will cause the round hole screen 7 to tilt downwards at 45°, and then the aggregate will roll into the first aggregate drawer 8.

[0085] Step 5: Enter the required mass on the display screen 26 corresponding to the particle size, click "OK", the first aggregate drawer 8 will automatically pop out and open the discharge port, and the aggregate will enter the weighing conveyor belt 25. When the weighing conveyor belt 25 detects that the mass has reached the set value, the first aggregate drawer 8 will automatically close the discharge port and return to its original position.

[0086] Step 6: The aggregate is fed into the collection cylinder 27 along the weighing conveyor belt 25, and finally bagged and sealed. After the whole bag is cured, it can be directly used to pour concrete blocks with the corresponding proportion.

[0087] Compared with existing granulators, the cold-bonding and sieveable granulator provided by this utility model has the following advantages:

[0088] First, this utility model employs a polygonal prism in the design of the roller press cylinder, consisting of an inner cylinder and an outer cylinder. When the two polygonal prisms roll towards each other, their corresponding sides press against each other, resulting in a more effective interaction force compared to cylindrical pressing, leading to denser aggregate particles. The outer cylinder creatively incorporates irregularly shaped grooves of different gradations on each side to produce continuously graded irregular aggregates. The advantage lies in the fact that the rough, polygonal surface of the aggregate allows for better bonding with cement paste, thereby improving the concrete's adhesion and compressive strength. Simultaneously, the groove design ensures continuous gradation because the complex particle size results in better inter-particle interaction compared to a single particle size, providing higher adhesion and more effectively filling voids in the concrete, thus reducing porosity. Furthermore, the inner and outer rollers are cleverly connected by a snap-fit ​​mechanism, allowing for flexible replacement of the outer cylinder according to actual needs. This feature greatly enhances the adjustability between the inner and outer cylinders and also reduces the decrease in aggregate particle density caused by wear on the outer cylinder under long-term pressure.

[0089] Secondly, an innovation of this invention is the use of a heated spiral conveyor belt as a solidification structure between the extrusion and screening structures in the granulation section. Firstly, the solidification effect of the conveyor belt during aggregate transport lies in its increased heating temperature relative to room temperature, which helps the particles acquire initial strength. Secondly, the spiral design lengthens the aggregate's path, and its rolling motion during transport further densifies the structure. Thirdly, unlike direct screening, the conveyor belt's transitional function prevents particle breakage due to gravity. Finally, the spiral design allows particles of different sizes to spread out on the conveyor belt, preventing large particles from clogging the round-hole screen and preventing smaller particles from continuing to be screened.

[0090] Third, unlike traditional granulators, this invention incorporates three interchangeable perforated sieves with different gradations inside the machine after aggregate molding. This eliminates the traditional method of manually collecting aggregate particles and then manually sieving them, thus integrating granulation, collection, and sieving, and improving efficiency. Through its innovative sieving function, this invention successfully improves the continuity of the gradation of artificial aggregate particles, making them more compact in concrete.

[0091] Fourth, this technical solution incorporates intelligent elements such as electronic displays and weighing conveyor belts. Three electronic displays control three aggregate drawers and three conveyor belts respectively. Users input the desired aggregate size and weight on the screen, and the drawer automatically pulls out and opens its bottom outlet, allowing the aggregate to fall onto the conveyor belt. Once the conveyor belt detects that the weight has reached the set value, the drawer automatically closes its outlet and returns to its original position. This design can obtain the required proportions and masses of different aggregate sizes for various concrete applications, uniformly mixing them in the aggregate bin for direct use in concrete preparation. This eliminates the traditional step of weighing and separating aggregates of different sizes, making the process more convenient and efficient.

[0092] Fifth, compared to roller press granulators currently on the market, this invention exhibits a significant advantage in ease of cleaning operation due to the cleaning brushes provided on both sides of the roller. Since residue adheres to the inside and outside of the roller grooves during granulation, making cleaning difficult, this invention, thanks to the design features of its cleaning brushes, simplifies the cleaning process after granulation. Furthermore, the brushes can be either ejected or retracted as needed, without affecting aggregate particle formation or aesthetic appearance. This results in a high cost-performance ratio and significantly expands its market prospects.

[0093] The above embodiments are merely one of the implementation methods to achieve the technical solution of this utility model. The scope of protection claimed by this utility model is not limited to this embodiment, but also includes any variations, substitutions and other implementation methods that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model.

Claims

1. A cold-bonding, sieveable granulator, characterized in that, Including the granulation process; The granulation section includes a feed inlet (22), an extrusion structure, a screening structure and a collection structure connected in sequence from top to bottom; The extrusion structure includes at least one set of two rollers (5) arranged symmetrically, with an extrusion space formed between the two rollers (5); The roller (5) is a polygonal prism, and the roller (5) has multiple grooves (13) with different gradations and irregular shapes. The screening structure includes multiple layers of round hole screens (7) with different gradations arranged from top to bottom; wherein the through hole (16) size of the round hole screen (7) from the uppermost to the lowermost layer gradually decreases; The perforated sieve (7) is located below the drum (5), and its output end is connected to the collection structure.

2. The cold-bonding, sieveable granulator according to claim 1, characterized in that, A heated spiral track (6) is provided between the extrusion structure and the screening structure. The heated spiral track (6) is used to heat and solidify the aggregate and spread out aggregates of different particle sizes.

3. The cold-bonding, sieveable granulator according to claim 1, characterized in that, One end of the perforated screen (7) is provided with a rotating structure (17); the rotating structure (17) includes a rotating body (18) and a rotating rod (19), and one end of the perforated screen (7) is attached to the rotating rod (19); the rotating body (18) can drive the perforated screen (7) from a horizontal state to an inclined state through the rotating rod (19); when the perforated screen (7) moves to an inclined state, the aggregate slides from the perforated screen (7) to the collection structure.

4. The cold-bonding, sieveable granulator according to claim 1, characterized in that, The roller (5) includes an inner cylinder (12) and an outer cylinder (11) sleeved outside the inner cylinder (12). A groove (13) is formed on the outer surface of the outer cylinder (11). The inner cylinder (12) is adapted to the sawtooth structure of the outer cylinder (11) through a snap-fit ​​structure (15). Both ends of the inner cylinder (12) are rotatably mounted on the extrusion structure body.

5. The cold-bonding, sieveable granulator according to claim 1, characterized in that, It also includes the pre-mixed portion; The premixing section includes a premixing platform (1); a lifting spring (2) is connected above the premixing platform (1); a premixing cylinder (3) is provided on the top of the lifting spring (2); and an automatic stirring head (28) is installed inside the premixing cylinder (3).

6. The cold-bonding, sieveable granulator according to claim 1, characterized in that, It also includes a section on aggregate classification; The aggregate sorting section includes a weighing conveyor belt (25); one end of the weighing conveyor belt (25) is connected to the collection structure, and the other end is connected to a collection cylinder (27).

7. The cold-bonding, sieveable granulator according to claim 1, characterized in that, The collection structure includes a second collection drawer (9) and a plurality of first collection drawers (8); each first collection drawer (8) is correspondingly provided with each layer of circular hole screen (7) and connected to the output end of the circular hole screen (7); the second collection drawer (9) is provided below the bottommost circular hole screen (7).

8. The cold-bonding, sieveable granulator according to claim 7, characterized in that, The inlet of the first aggregate drawer (8) is set at an inclined angle.

9. The cold-bonding, sieveable granulator according to claim 1, characterized in that, The granulation section also includes a cleaning structure; the cleaning structure includes a wire brush (10) arranged parallel to the roller (5).

10. The cold-bonding, sieveable granulator according to claim 1, characterized in that, Both the extrusion structure and the screening structure are provided with magnetic doors (21) on their outer walls.

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