Concrete expansive agent drying and stirring integrated equipment
By integrating drying and mixing functions into the concrete expansion agent production equipment, the problems of low production efficiency and high cost caused by equipment separation are solved, achieving efficient and low-cost production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QIXIAN LONGTENG COMMERCIAL CONCRETE CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-22
AI Technical Summary
Existing concrete expansion agent production equipment requires separate drying and mixing equipment, resulting in low production efficiency, high costs, and complex maintenance.
Design a concrete expansion agent drying and mixing integrated equipment, which integrates drying and mixing devices in the same equipment, and uses spiral blades and drying plates to achieve uniform drying and mixing of raw materials, reducing conveying steps and improving production efficiency.
Through integrated design, the number of raw material transportation steps is reduced, production costs are lowered, and the production efficiency of concrete expansion agents is improved.
Smart Images
Figure CN224266752U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of concrete expansion agent production technology, specifically to an integrated drying and mixing equipment for concrete expansion agents. Background Technology
[0002] Concrete expansive agents are used to prepare expansive concrete (including shrinkage-compensating concrete and self-stressing concrete). Shrinkage-compensating concrete compensates for concrete drying shrinkage, densifies the concrete, and improves its impermeability. In civil engineering, it is mainly used for waterproofing and crack resistance. Common applications include preparing high-grade waterproof concrete and appropriately extending the spacing of expansion joints or post-cast strips. The production of concrete expansive agents requires drying some raw materials before mixing all materials. This necessitates concrete expansive agent drying and mixing equipment. Existing such equipment consists of drying and mixing components. The drying equipment often comprises a rotary drum, while the mixing equipment is typically a twin-shaft mixer. The rotary drum contains evenly distributed heating wires and spiral blades. The raw materials requiring drying are fed into the rotary drum, which rotates, and in conjunction with heating wires and spiral blades, the raw materials are continuously tumbled and heated while being dried. The dried raw materials are then fed into a twin-shaft mixer along with other raw materials. The two mixing shafts rotate in opposite directions, mixing the different raw materials evenly to produce the finished concrete expansive agent. Traditional concrete expansive agent drying and mixing equipment consists of two separate units: drying and mixing. This requires drying before mixing, resulting in multiple production steps, low production efficiency, and different equipment requiring different maintenance. Material conveying equipment is also needed between the drying and mixing processes, leading to high production costs for concrete expansive agents. Therefore, we propose an integrated drying and mixing equipment for concrete expansive agents. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a concrete expansion agent drying and mixing integrated equipment. The drying and mixing devices are located inside the same equipment, which reduces the transportation of raw materials, facilitates later maintenance, and reduces the production cost of concrete expansion agents. The raw materials can be dried evenly while mixing, which reduces the production steps and improves the production efficiency of concrete expansion agents. It can effectively solve the problems in the background technology.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a concrete expansion agent drying and mixing integrated equipment, including a support frame and a drying mechanism;
[0005] Support frame: It has a mixing chamber inside, and the upper part of the mixing chamber has an installation cavity;
[0006] The drying mechanism includes a mounting frame, drying plates, heating wires, and a drive assembly. The mounting frame is rotatably connected to the center of the mixing hopper. The upper edge of the mounting frame is chamfered. The drying plates are evenly arranged inside the mounting frame, and the heating wires are all located at the lower end of the drying plates. The drive assembly is located inside the mounting cavity. The drying and mixing devices are located in the same equipment, reducing the transportation of raw materials, facilitating later maintenance, and lowering the production cost of concrete expansion agent. It can dry the raw materials evenly while mixing, reducing production steps and improving the production efficiency of concrete expansion agent.
[0007] Furthermore, the drying mechanism also includes a boss, which is located at the upper end of the mounting frame. The drying sheets are all installed in conjunction with the boss, which can evenly spread the raw materials outward.
[0008] Furthermore, the drive assembly includes a sleeve, an internal gear ring, a first gear, and a second gear. The sleeve is rotatably connected to the middle of the interior of the mounting cavity. The lower end of the sleeve is fixedly connected to the upper end of the mounting frame through evenly distributed connecting rods. The internal gear ring is located at the upper end of the sleeve. A rotatable first gear is located in the middle of the interior of the mounting cavity. The second gear is rotatably connected to the middle of the front side of the top wall of the mounting cavity. The front side of the second gear meshes with the internal gear ring, and the rear side of the second gear meshes with the first gear, providing a stable transmission effect for the drying and stirring of the raw materials.
[0009] Furthermore, the drive assembly also includes a gearbox and a motor. The gearbox is located at the upper middle part of the mixing hopper, and the motor is located at the upper end of the gearbox. The lower end of the motor's output shaft is fixedly connected to the upper end of the gearbox's reduction shaft, providing stable drive for the drying and mixing of raw materials.
[0010] Furthermore, it also includes a feeding cylinder, a spiral shaft, and spiral blades. The feeding cylinder is located in the middle of the mixing hopper. The inner wall of the boss is fixedly connected to the upper end of the outer surface of the feeding cylinder. The spiral shaft is rotatably connected to the middle of the mixing hopper. The upper part of the outer surface of the spiral shaft passes through the inside of the sleeve and is rotatably connected to the inner wall of the sleeve. The upper end of the outer surface of the spiral shaft is fixedly connected to the inner wall of the gear. The upper end of the spiral shaft is fixedly connected to the lower end of the output shaft of the gearbox. The spiral blades are located in the middle of the outer surface of the spiral shaft. The outer edge of the spiral blades is fitted and installed with the inner wall of the feeding cylinder to provide a basis for the mixing of raw materials.
[0011] Furthermore, it also includes a feed pipe and a discharge pipe. Feed ports are provided on both the left and right sides of the upper end of the mixing silo, and feed pipes are provided at the upper end of the feed ports. A discharge port is provided on the lower front side of the mixing silo, and discharge pipes are provided at the front end of the discharge port to facilitate the feeding and discharging of materials.
[0012] Furthermore, it also includes air ducts, fans, and filters. Air ducts are provided on both the front and rear sides of the upper end of the mixing hopper. Air ducts are all located at the upper end of the air ducts. Fans are all located in the middle of the air ducts. The input end of the fan is electrically connected to the output end of the microcontroller. Filters are all located at the lower end of the air ducts to facilitate the circulation of air inside the equipment.
[0013] Furthermore, it also includes a microcontroller, which is located in the middle of the lower right side of the support frame. The input end of the microcontroller is electrically connected to an external power source, and the input end of the heating wire is electrically connected to the output end of the microcontroller, providing control for the drying and mixing of the raw materials of the concrete expansion agent.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This integrated drying and mixing equipment for concrete expansion agents has the following advantages:
[0015] Both the spiral blades and the drying plates are located inside the mixing hopper, avoiding the back-and-forth transport of raw materials between equipment and facilitating later maintenance. This reduces the production cost of concrete expansion agents. At the same time, the spiral blades create an initial mixing effect when conveying the raw materials upwards. After the raw materials fall downwards from above the feeding cylinder, they are caught by the rotating drying plates. Centrifugal force slows down the falling speed of the raw materials, allowing them to be dried more efficiently. This also further mixes the raw materials. Heating the materials simultaneously creates a stirring and mixing effect, improving the production efficiency of concrete expansion agents. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a schematic cross-sectional view of the drying mechanism of this utility model;
[0018] Figure 3 This is a schematic diagram of the drive component structure of this utility model;
[0019] Figure 4 This is a schematic diagram of the drying sheet structure of this utility model.
[0020] In the diagram: 1 Support frame, 2 Mixing hopper, 3 Mounting cavity, 4 Drying mechanism, 41 Mounting frame, 42 Drying plate, 43 Heating wire, 44 Drive assembly, 441 Sleeve, 442 Internal gear ring, 443 Gear 1, 444 Gear 2, 445 Gearbox, 446 Motor, 45 Boss, 5 Feeding cylinder, 6 Spiral shaft, 7 Spiral blade, 8 Feed pipe, 9 Discharge pipe, 10 Air duct, 11 Fan, 12 Filter screen, 13 Microcontroller. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figure 1-4 This embodiment provides a technical solution: a concrete expansion agent drying and mixing integrated equipment, including a support frame 1 and a drying mechanism 4;
[0023] Support frame 1: It contains a mixing chamber 2, with an installation cavity 3 at the upper end of the mixing chamber 2. It also includes an inlet pipe 8 and an outlet pipe 9. Inlets are located on both the left and right sides of the upper end of the mixing chamber 2, with the inlet pipes 8 positioned above each inlet for raw material entry. An outlet is located on the front side of the lower end of the mixing chamber 2, with the outlet pipe 9 positioned at the front end of the outlet for connection to an external screw conveyor, facilitating material discharge. It also includes an air guide pipe 10, a fan 11, and a filter screen 12. Air guide vents are located on both the front and rear sides of the upper end of the mixing chamber 2, with the air guide pipes 10 positioned above each air guide vent. The fan 11... The fan 11 is located in the middle of the air duct 10. The front fan 11 draws air inward and the rear fan 11 draws air outward. The input end of the fan 11 is electrically connected to the output end of the microcontroller 13. The filter screen 12 is located at the lower end of the air duct 10. The filter screen 12 can prevent the raw materials inside the equipment from being drawn out by the fan 11, which facilitates the air circulation inside the equipment. The microcontroller 13 is located in the middle of the lower right side of the support frame 1. The input end of the microcontroller 13 is electrically connected to an external power source. The input end of the heating wire 43 is electrically connected to the output end of the microcontroller 13, which provides control for the drying and mixing of the raw materials of the concrete expansion agent.
[0024] Drying mechanism 4 includes a mounting frame 41, drying plates 42, heating wires 43, and a drive assembly 44. The mounting frame 41 is rotatably connected to the center of the mixing chamber 2. The upper edge of the mounting frame 41 is chamfered to prevent material from getting stuck. The drying plates 42 are evenly distributed inside the mounting frame 41, forming a spiral shape around the axis of the mounting frame 41. The drying plates 42 are made of aluminum, which has good thermal conductivity. The heating wires 43 are located at the lower end of the drying plates 42. The drying mechanism 4 also includes a boss 45 located on the upper end of the mounting frame 41. The drying plates 42 are fitted to the boss 45. The boss 45 is higher in the center and lower around the edges, and its diameter is larger than the inner sleeve of the mounting frame 41. The diameter of the cylinder, the boss 45 can cover the side of the drying sheet 42 near the inner sleeve of the mounting frame 41, can evenly spread the raw material outwards, the drive assembly 44 is set inside the mounting cavity 3, the drive assembly 44 includes a sleeve 441, an internal gear ring 442, a first gear 443 and a second gear 444. The sleeve 441 is rotatably connected to the middle of the inside of the mounting cavity 3, the lower end of the sleeve 441 is fixedly connected to the upper end of the mounting frame 41 through evenly distributed connecting rods, the internal gear ring 442 is set at the upper end of the sleeve 441, the middle of the inside of the mounting cavity 3 is provided with a rotatable first gear 443, the second gear 444 is rotatably connected to the middle of the front side of the top wall of the mounting cavity 3, the front side of the second gear 444 meshes with the internal gear ring 442, and the rear side of the second gear 444 is connected to the internal gear ring 442. Gear 443 meshes with the material, providing a stable transmission effect for the drying and mixing of raw materials. The drive assembly 44 also includes a reduction gearbox 445 and a motor 446. The reduction gearbox 445 is located in the upper middle part of the mixing hopper 2, and the motor 446 is located at the upper end of the reduction gearbox 445. The lower end of the output shaft of the motor 446 is fixedly connected to the upper end of the reduction shaft of the reduction gearbox 445, providing stable drive for the drying and mixing of raw materials. The assembly also includes a feeding cylinder 5, a spiral shaft 6, and spiral blades 7. The feeding cylinder 5 is located in the middle of the interior of the mixing hopper 2. The feeding cylinder 5 is connected to the inner wall of the mixing hopper 2 through a support rib at the lower end of its outer surface. The inner wall of the boss 45 is fixedly connected to the upper end of the outer surface of the feeding cylinder 5. The spiral shaft 6 is rotatably connected to the middle of the interior of the mixing hopper 2. The outer surface of the spiral shaft 6 penetrates the interior of the sleeve 441 and is rotatably connected to the inner wall of the sleeve 441. The upper end of the outer surface of the spiral shaft 6 is fixedly connected to the inner wall of the gear 443. The upper end of the spiral shaft 6 is fixedly connected to the lower end of the output shaft of the gearbox 445. The spiral blade 7 is located in the middle of the outer surface of the spiral shaft 6. The outer edge of the spiral blade 7 is fitted with the inner wall of the feeding cylinder 5. The outer edge of the spiral blade 7 is in contact with the inner wall of the feeding cylinder 5, providing a basis for the mixing of raw materials. The drying and mixing devices are located in the same equipment, reducing the conveying of raw materials and facilitating later maintenance. This reduces the production cost of concrete expansion agent. The raw materials can be dried evenly while mixing, reducing production steps and improving the production efficiency of concrete expansion agent.
[0025] The working principle of the concrete expansion agent drying and mixing integrated equipment provided by this utility model is as follows: When preparing the concrete expansion agent, the rear end of the external screw conveyor is first fixedly connected to the front end of the discharge pipe 9 to facilitate subsequent material discharge. Then, the external conveying device sends the required raw materials into the mixing hopper 2 through the feed pipe 8. The raw materials pass through the drying plate 42 and fall into the bottom of the mixing hopper 2. The microcontroller 13 first controls the fan 11 to work. The front fan 11 blows air into the mixing hopper 2, and the rear fan 11 draws air out from the mixing hopper 2, so that the air inside the mixing hopper 2 circulates. Then, the microcontroller 13 controls the motor 446 and the heating wire 43 to work. 6. The reduction gearbox 445 drives the spiral shaft 6 to rotate, and the spiral blades 7 also rotate accordingly. As the spiral blades 7 rotate, under the action of the tangential thrust of the spiral blades 7 and the friction of the spiral blades 7, the raw material, and the feeding cylinder 5, the rotating spiral blades 7 drive the surrounding raw material to move upward inside the feeding cylinder 5, and then scatter from the top of the feeding cylinder 5 to the surrounding area. At this time, the protrusion 45, which is high in the middle and low at the edge, allows the scattered raw material to fall onto the drying plate 42. At this time, as the spiral shaft 6 rotates, the gear 1 443 also rotates, and through the transmission of the gear 2 444, it drives the internal gear ring 442 to rotate, thereby driving the sleeve 441 to rotate. As the sleeve 441 rotates... The mounting frame 41 and the drying plate 42 rotate simultaneously. The heating wire 43 dissipates heat, simultaneously heating the drying plate 42. When the raw material falls onto the surface of the drying plate 42, let this drying plate 42 be A, and the drying plate 42 clockwise from A be B. The heating wire 43 at the lower end of B dissipates heat, heating B itself while also drying the raw material on the surface of A. At the same time, the rotating drying plate 42 generates centrifugal force on the material, causing the raw material to move from the side of the drying plate 42 closer to the spiral shaft 6 to the side of the drying plate 42 away from the spiral shaft 6, thus making more contact with the surface of the drying plate 42. It also slows down the falling speed of the material, preventing the raw material from falling directly to the bottom of the mixing bin 2. After being dried by the drying plate 42, the raw material falls from the bottom of the drying plate 42 to the bottom of the mixing hopper 2, and is then conveyed upward by the spiral blades 7. This process is repeated. When the raw material is being dried, the hot and humid air is filtered by the filter screen 12 and drawn out by the rear fan 11, while fresh air is continuously sent into the mixing hopper 2 by the front fan 11. During this process, the spiral blades 7 convey the raw material upward, creating a preliminary mixing effect. After the raw material falls downward from above the feed cylinder 5, it is caught by the rotating drying plate 42, and the centrifugal force further mixes the raw material. This process is repeated, and the raw material is stirred and mixed while being heated, which improves the production efficiency of concrete expansion agent.
[0026] It is worth noting that the microcontroller 13 disclosed in the above embodiments is an STM32F103RCT6 microcontroller, the heating wire 43 is a YHYJ heating wire, the motor 446 is a YE3-180M-2 motor, and the fan 11 is a TG4020 fan. The microcontroller 13 controls the operation of the heating wire 43, the motor 446 and the fan 11 using methods commonly used in the prior art.
[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A concrete expansion agent drying and mixing integrated equipment, characterized in that: It includes a support frame (1) and a drying mechanism (4); Support frame (1): It is equipped with a mixing chamber (2) inside, and the upper part of the mixing chamber (2) is equipped with an installation cavity (3); Drying mechanism (4): It includes a mounting frame (41), drying plates (42), heating wires (43) and a drive assembly (44). The mounting frame (41) is rotatably connected to the middle of the mixing bin (2). The upper edge of the mounting frame (41) is chamfered. The drying plates (42) are evenly arranged inside the mounting frame (41). The heating wires (43) are all arranged at the lower end of the drying plates (42). The drive assembly (44) is arranged inside the mounting cavity (3).
2. The integrated drying and mixing equipment for concrete expansion agent according to claim 1, characterized in that: It also includes a microcontroller (13), which is located at the lower right side of the support frame (1). The input end of the microcontroller (13) is electrically connected to an external power source, and the input end of the heating wire (43) is electrically connected to the output end of the microcontroller (13).
3. The integrated drying and mixing equipment for concrete expansion agent according to claim 1, characterized in that: The drying mechanism (4) also includes a boss (45), which is located at the upper end of the mounting frame (41), and the drying sheets (42) are all installed in conjunction with the boss (45).
4. The integrated drying and mixing equipment for concrete expansion agent according to claim 2, characterized in that: The drive assembly (44) includes a sleeve (441), an internal gear ring (442), a first gear (443), and a second gear (444). The sleeve (441) is rotatably connected to the middle of the interior of the mounting cavity (3). The lower end of the sleeve (441) is fixedly connected to the upper end of the mounting frame (41) through evenly distributed connecting rods. The internal gear ring (442) is located at the upper end of the sleeve (441). A rotatable first gear (443) is provided in the middle of the interior of the mounting cavity (3). The second gear (444) is rotatably connected to the middle of the front side of the top wall of the mounting cavity (3). The front side of the second gear (444) meshes with the internal gear ring (442), and the rear side of the second gear (444) meshes with the first gear (443).
5. The integrated drying and mixing equipment for concrete expansion agent according to claim 4, characterized in that: The drive assembly (44) also includes a gearbox (445) and a motor (446). The gearbox (445) is located at the upper middle part of the mixing bin (2), and the motor (446) is located at the upper end of the gearbox (445). The lower end of the output shaft of the motor (446) is fixedly connected to the upper end of the reduction shaft of the gearbox (445).
6. The integrated drying and mixing equipment for concrete expansion agent according to claim 5, characterized in that: It also includes a feeding cylinder (5), a spiral shaft (6) and spiral blades (7). The feeding cylinder (5) is located in the middle of the mixing hopper (2). The inner wall of the boss (45) is fixedly connected to the upper end of the outer surface of the feeding cylinder (5). The spiral shaft (6) is rotatably connected to the middle of the mixing hopper (2). The upper part of the outer surface of the spiral shaft (6) passes through the inside of the sleeve (441) and is rotatably connected to the inner wall of the sleeve (441). The upper end of the outer surface of the spiral shaft (6) is fixedly connected to the inner wall of the gear (443). The upper end of the spiral shaft (6) is fixedly connected to the lower end of the output shaft of the gearbox (445). The spiral blades (7) are located in the middle of the outer surface of the spiral shaft (6). The outer edge of the spiral blades (7) is fitted and installed with the inner wall of the feeding cylinder (5).
7. The integrated drying and mixing equipment for concrete expansion agent according to claim 1, characterized in that: It also includes a feed pipe (8) and a discharge pipe (9). The upper left and right sides of the mixing bin (2) are provided with feed inlets, and the feed pipes (8) are all located at the upper end of the feed inlets. The lower front side of the mixing bin (2) is provided with a discharge outlet, and the discharge pipe (9) is located at the front end of the discharge outlet.
8. The integrated drying and mixing equipment for concrete expansion agent according to claim 1, characterized in that: It also includes air ducts (10), fans (11) and filters (12). Air ducts are provided on both the front and rear sides of the upper end of the mixing bin (2). Air ducts (10) are all located at the upper end of the air ducts. Fans (11) are all located in the middle of the interior of the air ducts (10). The input end of the fan (11) is electrically connected to the output end of the microcontroller (13). Filters (12) are all located at the lower end of the air ducts (10).