A concrete admixture spray drying granulation device

Abstract

The utility model provides a kind of concrete admixture spray drying granulating device, it is related to drying device technical field, including dryer, the surface of dryer is equipped with inlet, the bottom surface of dryer is equipped with discharge port, the side of dryer away from inlet is equipped with air inlet, four chassis are equipped with around the outside of air inlet, the side of air inlet is equipped with mounting bracket, the side of mounting bracket is equipped with controller, annular fan blade is set in the inside of air duct using annular fan blade, the fan blade of annular fan blade is in inclined state, so that hot air flow after being pressurized by air pump is passed through annular fan blade downward, hot air flow will drive annular fan blade to rotate, and when annular fan blade rotates, due to the inclined fan blade of annular fan blade, so that the flow direction of rotating annular fan blade will change all the time hot air flow, so that hot air flow is more evenly distributed in the inside of dryer, so as to ensure that the overall drying degree of material is consistent, improve the stability of product quality, solve the defect that heat exchange is insufficient in partial area.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, and in particular to a spray drying and granulation device for concrete admixtures. Background Technology

[0002] According to Chinese Publication No. CN108786160B, a spray drying and granulation method and apparatus are disclosed. The technical solution is as follows: A spray drying and granulation apparatus includes a drying tower. An atomizing nozzle and a heating and air supply device are connected to the upper end of the drying tower. The atomizing nozzle is connected to a material pipe. A discharge cone is connected to the lower end of the drying tower. A drive mechanism is installed on the drying tower. The output shaft of the drive mechanism is connected to a rotating shaft. The rotating shaft is connected to the side wall of the drying tower via a bearing. A turntable is fixed to the other end of the rotating shaft. A support rod is fixed to the edge of the turntable. A connecting rod is connected to the other end of the support rod via a bearing. A lifting rod is hinged to the other end of the connecting rod. A push plate is fixed to the other end of the lifting rod. The push plate is disposed inside the drying tower. This invention provides a spray drying and granulation method and apparatus that can uniformly and rapidly heat the atomized material, solving the problem of uneven heating of the atomized material in existing spray granulators, resulting in uneven granules.

[0003] The hot air from the centrifugal atomizing dryer described above and in the prior art usually enters the drying chamber in a single direction. When this fixed-direction hot air flows in the drying chamber, it creates local heat stagnation, resulting in insufficient heat exchange in some areas. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of insufficient heat exchange in some areas of the existing technology by proposing a spray drying and granulation device for concrete admixtures.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a spray drying and granulation device for concrete admixtures, comprising a dryer, wherein the surface of the dryer is provided with a liquid inlet, the bottom surface of the dryer is provided with a discharge outlet, the side of the dryer away from the liquid inlet is provided with an air inlet, four base frames are arranged around the air inlet, a mounting frame is provided on one side of the air inlet, a controller is provided on one side of the mounting frame, a fan is provided on one side of the dryer, a heater is provided on the top of the fan, a centrifugal atomizer is provided on the top of the dryer, an air pump is provided on one side of the centrifugal atomizer, an air duct is provided on the top surface inside the dryer, a movable groove is provided on the surface of the air duct, a fixed frame is provided at the bottom of the movable groove, an annular fan blade is provided inside the air duct, four pulleys are provided on the outside of the annular fan blade, two supports are provided on the surface of the annular fan blade, a brush plate is provided on one side of each of the two supports, and brush bristles are vertically arrayed on the surface of each of the two brush plates.

[0006] Preferably, the centrifugal atomizer is installed on the top surface of the dryer and is bolted to the dryer. The bottom end of the centrifugal atomizer penetrates into the interior of the dryer, and the liquid inlet is connected to the centrifugal atomizer.

[0007] Preferably, the four base frames are mounted on the bottom surface of the dryer and welded to the dryer. Both ends of the mounting bracket are mounted on the surfaces of the two base frames. The controller is mounted on the surface of the mounting bracket and bolted to the mounting bracket.

[0008] Preferably, the fan is installed on the bottom surface of the heater and connected to the heater flange. The heater is connected to the air pump pipeline and the air pump is connected to the air inlet pipeline of the dryer. The air pump is installed on the top surface of the dryer and bolted to the dryer.

[0009] Preferably, the air inlet of the dryer is connected to the air duct, the four pulleys are arranged in a circumferential array outside the annular fan blade, and the pulleys are axially connected to the annular fan blade. All four pulleys are arranged in the movable groove and are installed on the top surface of the fixed frame.

[0010] Preferably, the annular fan blade is fixed inside the air duct by a fixing frame, and the fixing frame is bolted to the top surface inside the dryer.

[0011] Preferably, the two supports are mirror images of each other with the annular fan blade as the center, and the supports and the annular fan blade are integrally formed. The two brush plates are installed on the surface of the two supports and are threadedly connected to the supports. The two brush plates are bonded to the bristles on the surface.

[0012] Beneficial effects

[0013] In this invention, a fan is used to deliver external air into the heater for heating. The heated airflow is then transported through a pipe into an air pump, which in turn delivers the hot airflow through the pipe into the air inlet. From there, it enters the air duct inside the dryer. Because the annular fan blades are located inside the air duct and are tilted, the hot airflow, pressurized by the air pump, rotates as it passes downwards through the annular fan blades. The tilted blades continuously change the direction of the hot airflow, resulting in a more even distribution of heat within the dryer. This ensures consistent drying of the material, improves product quality stability, and solves the problem of insufficient heat exchange in certain areas. Attached Figure Description

[0014] Figure 1 This is an isometric drawing of the present invention;

[0015] Figure 2 This is a front view of the present invention;

[0016] Figure 3 This is a top view of the present invention;

[0017] Figure 4 For the present utility model Figure 3 Sectional view at point AA;

[0018] Figure 5 This is a partial isometric drawing of the present invention.

[0019] Legend:

[0020] 1. Dryer; 2. Liquid inlet; 3. Discharge outlet; 4. Air inlet; 5. Base frame; 6. Mounting frame; 7. Controller; 8. Fan; 9. Heater; 10. Air pump; 11. Centrifugal atomizer; 12. Air duct; 13. Movable slot; 14. Fixed frame; 15. Annular fan blade; 16. Pulley; 17. Support; 18. Brush plate; 19. Brush bristles. Detailed Implementation

[0021] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0022] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1:

[0024] Reference Figure 1-5A spray drying and granulation device for concrete admixtures includes a dryer 1. The dryer 1 has a liquid inlet 2 on its surface and a discharge outlet 3 on its bottom surface. An air inlet 4 is located on the side of the dryer 1 away from the liquid inlet 2. Four base frames 5 surround the air inlet 4. A mounting frame 6 is located on one side of the air inlet 4, and a controller 7 is located on one side of the mounting frame 6. A fan 8 is located on one side of the dryer 1, and a heater 9 is located on the top of the fan 8. A centrifugal atomizer 11 is located on the top of the dryer 1, and an air pump 10 is located on one side of the centrifugal atomizer 11. An air duct 12 is located on the top surface inside the dryer 1. The surface of the air duct 12 is provided with a movable groove 13, and the bottom of the movable groove 13 is provided with a fixed frame 14. The interior of the air duct 12 is provided with an annular fan blade 15, and the exterior of the annular fan blade 15 is provided with four pulleys 16. The surface of the annular fan blade 15 is provided with two supports 17, and one side of each of the two supports 17 is provided with a brush plate 18. The surface of each of the two brush plates 18 is provided with vertically arranged bristles 19. The centrifugal atomizer 11 is installed on the top surface of the dryer 1 and is bolted to the dryer 1. The bottom end of the centrifugal atomizer 11 penetrates into the interior of the dryer 1, and the liquid inlet 2 is connected to the centrifugal atomizer 11. The four bottom... A frame 5 is installed on the bottom surface of the dryer 1 and welded to the dryer 1. Both ends of a mounting frame 6 are mounted on the surfaces of the two base frames 5. A controller 7 is installed on the surface of the mounting frame 6 and bolted to it. A fan 8 is installed on the bottom surface of the heater 9 and connected to its flange. The heater 9 is connected to the air pump 10 via a pipe, and the air pump 10 is connected to the air inlet 4 of the dryer 1 via a pipe. The air pump 10 is installed on the top surface of the dryer 1 and bolted to it. The air inlet 4 of the dryer 1 is connected to the air duct 12. Four pulleys 16 are arranged in a circular array. Outside the annular fan blade 15, and with pulleys 16 axially connected to the annular fan blade 15, four pulleys 16 are all set in the movable groove 13, and the pulleys 16 are all installed on the top surface of the fixed frame 14. The annular fan blade 15 is fixed inside the air duct 12 through the fixed frame 14, and the fixed frame 14 is bolted to the top surface inside the dryer 1. Two supports 17 are set in a mirror image with the annular fan blade 15 as the center, and the supports 17 and the annular fan blade 15 are integrally formed. Two brush plates 18 are installed on the surface of the two supports 17, and the brush plates 18 are threadedly connected to the supports 17. The two brush plates 18 are bonded to the bristles 19 on the surface.

[0025] During the operation of the centrifugal atomizing dryer 1, the concrete admixture solution is injected through the inlet 2 and then enters the centrifugal atomizer 11 through the flow channel of the dryer 1. The centrifugal atomizer 11 rotates at high speed driven by a motor, using centrifugal force to disperse the solution into tiny droplets. The droplet size is affected by factors such as the equipment rotation speed, solution viscosity, and surface tension. Smaller droplets significantly increase the contact area with hot air, accelerating the drying rate. Simultaneously, the fan 8 draws in external air and delivers it upwards to the heater 9. The heater 9, according to its internal structure, heats the air using electric heating rods, providing hot air at a suitable temperature for the drying process. Subsequently, the air pump 10 draws in the air heated by the heater 9 and pressurizes it, giving the hot air sufficient power, and then enters the air duct 12 inside the dryer 1 through the air inlet 4. When the hot air, pressurized by the air pump 10, flows downwards through the annular fan blade 15, the impact force of the hot air drives the annular fan blade 15 to rotate. Due to the inclined structure of the fan blades, the angle of inclination is adjusted according to the actual operation of the dryer 1, continuously changing the direction of the hot airflow during rotation, thus promoting the uniform distribution of the hot airflow within the dryer 1. During this process, four pulleys 16, arranged in a circumferential array on the outside of the annular fan blades 15, slide within the movable groove 13, while the fixed frame 14 provides support and positioning. The sliding of the pulleys 16 significantly reduces the friction during the rotation of the annular fan blades 15, making their operation smoother. The bracket 17, integrally formed with the annular fan blades 15, rotates synchronously with the fan blades, driving the brush plate 18 and brush bristles mounted on it. The brush plate 18 is made of lightweight industrial plastic, reducing the rotational load. Its main function is to clean the inner wall of the air duct 12, preventing the adhesion of droplets and dried particles, and ensuring efficient flow of hot air. Once the atomized concrete admixture droplets come into full contact with the uniformly distributed hot airflow, the moisture evaporates rapidly, completing the drying and granulation process. The dried particles are discharged through the discharge port 3, entering subsequent collection and packaging processes. The entire operation of the equipment is precisely controlled by the controller 7 mounted on the mounting frame 6. The controller 7 is responsible for adjusting the speed of the fan 8, the heating temperature of the heater 9, and the speed parameters of the centrifugal atomizer 11 to ensure smooth operation of the equipment and meet production needs under different working conditions. In addition, the base frame 5 provides stable support for the entire dryer 1, ensuring that the equipment maintains a stable working height and position during operation. Specific Implementation Example 2:

[0027] Reference Figure 1-5 A concrete admixture spray drying and granulation device is further based on the basic structure in Specific Embodiment 1. The controller 7 is the control core of the entire device, which controls the operation of each electrical component through a preset program or instructions input by the operator.

[0028] The controller 7 adjusts the power of the heater 9 according to the set drying temperature to control the heating temperature. It also regulates the rotation speed of the centrifugal atomizer 11 to control the degree of droplet atomization. Based on the required flow rate of the hot air, the controller 7 adjusts the rotation speed of the fan 8, thereby controlling the amount of air entering the heater 9 and indirectly affecting the flow rate and pressure of the hot air. The operation of the air pump 10 is also controlled by the controller 7 to ensure stable output pressure, providing appropriate power for the hot air, allowing it to enter the dryer 1 according to design requirements and work in conjunction with the annular fan blades 15. Through the coordinated operation of all electrical components, the entire concrete admixture spray drying and granulation device achieves stable and efficient operation.

[0029] In summary:

[0030] 1. A fan 8 is used to deliver external air into the heater 9 for heating. The heated airflow is then delivered to the air pump 10 through a pipeline. The air pump 10 then delivers the hot airflow through the pipeline into the air inlet 4, and into the air duct 12 inside the dryer 1. Since the annular fan blade 15 is located inside the air duct 12 and the blades of the annular fan blade 15 are inclined, the hot airflow, pressurized by the air pump 10, drives the annular fan blade 15 to rotate as it passes downward. As the annular fan blade 15 rotates, the inclined blades of the annular fan blade 15 continuously change the direction of the hot airflow, thus allowing the hot airflow to be more evenly distributed inside the dryer 1. This ensures that the overall drying degree of the material is consistent, improves the stability of product quality, and solves the problem of insufficient heat exchange in some areas.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A spray drying and granulation device for concrete admixtures, comprising a dryer (1), characterized in that: The surface of the dryer (1) is provided with a liquid inlet (2), the bottom surface of the dryer (1) is provided with a discharge port (3), the side of the dryer (1) away from the liquid inlet (2) is provided with an air inlet (4), four base frames (5) are provided around the outside of the air inlet (4), a mounting frame (6) is provided on one side of the air inlet (4), a controller (7) is provided on one side of the mounting frame (6), a fan (8) is provided on one side of the dryer (1), a heater (9) is provided on the top of the fan (8), and a centrifugal atomizer (11) is provided on the top of the dryer (1). 1) is provided with an air pump (10) on one side. The top surface inside the dryer (1) is provided with an air duct (12). The surface of the air duct (12) is provided with a movable groove (13). The bottom of the movable groove (13) is provided with a fixed frame (14). The inside of the air duct (12) is provided with an annular fan blade (15). The outside of the annular fan blade (15) is provided with four pulleys (16). The surface of the annular fan blade (15) is provided with two supports (17). One side of each of the two supports (17) is provided with a brush plate (18). The surface of each of the two brush plates (18) is provided with brush bristles (19) arranged vertically.

2. The concrete admixture spray drying and granulation device according to claim 1, characterized in that: The centrifugal atomizer (11) is installed on the top surface of the dryer (1) and is bolted to the dryer (1). The bottom end of the centrifugal atomizer (11) penetrates into the interior of the dryer (1) and the liquid inlet (2) is connected to the centrifugal atomizer (11).

3. The concrete admixture spray drying and granulation device according to claim 1, characterized in that: The four base frames (5) are installed on the bottom surface of the dryer (1) and the base frames (5) are welded to the dryer (1). Both ends of the mounting bracket (6) are installed on the surface of the two base frames (5). The controller (7) is installed on the surface of the mounting bracket (6) and is bolted to the mounting bracket (6).

4. The concrete admixture spray drying and granulation device according to claim 1, characterized in that: The fan (8) is installed on the bottom surface of the heater (9) and the fan (8) is connected to the flange of the heater (9). The heater (9) is connected to the air pump (10) pipe and the air pump (10) is connected to the air inlet (4) pipe of the dryer (1). The air pump (10) is installed on the top surface of the dryer (1) and the air pump (10) is bolted to the dryer (1).

5. The concrete admixture spray drying and granulation device according to claim 1, characterized in that: The air inlet (4) of the dryer (1) is connected to the air duct (12). The four pulleys (16) are arranged in a circumferential array outside the annular fan blade (15), and the pulleys (16) are axially connected to the annular fan blade (15). The four pulleys (16) are all located in the movable groove (13), and the pulleys (16) are all installed on the top surface of the fixed frame (14).

6. The concrete admixture spray drying and granulation device according to claim 1, characterized in that: The annular fan blade (15) is fixed inside the air duct (12) by a fixing frame (14), and the fixing frame (14) is bolted to the top surface inside the dryer (1).

7. The concrete admixture spray drying and granulation device according to claim 1, characterized in that: The two brackets (17) are mirror images of the annular fan blade (15) and the brackets (17) and the annular fan blade (15) are integrally formed. The two brush plates (18) are installed on the surface of the two brackets (17) and the brush plates (18) are threadedly connected to the brackets (17). The two brush plates (18) are bonded to the bristles (19) on the surface.

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