A fiber-reinforced aggregate mixing device for marine concrete
By combining the lifting mixing shaft and the aggregate grinding unit, the problem of poor mixing uniformity of traditional mixing shafts is solved, achieving uniform mixing of fibers and aggregates in marine concrete and improving the performance of concrete.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN MEIYI XINGYE BUILDING MATERIALS CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional mixing shafts mostly operate at a fixed height, resulting in extremely poor mixing uniformity between fibers, aggregates, and cementitious materials, making it difficult to meet the high requirements of marine concrete.
The design features a liftable mixing shaft, combined with an aggregate grinding unit. Through rotation and lifting motion, more uniform mixing is achieved. The sliding fit between the lifting sleeve and the annular groove, along with the driving force of the mixing motor, ensures that the mixing shaft covers and mixes at different heights.
It improves mixing efficiency, ensures uniform mixing of fibers with aggregates and cementitious materials, and enhances the chloride ion penetration resistance, crack resistance and durability of marine concrete.
Smart Images
Figure CN224446368U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of concrete production equipment technology, and in particular to a fiber-reinforced aggregate mixing device for marine concrete. Background Technology
[0002] In marine engineering construction, marine concrete, as a core structural material, must withstand the erosion of extreme environments such as high salt spray, strong tides, alternating wet and dry conditions, and freeze-thaw cycles over long periods. Therefore, stringent requirements are placed on its resistance to chloride ion penetration, crack resistance, durability, and mechanical strength. To meet these requirements, marine concrete often employs fiber reinforcement technology (such as incorporating glass fiber and coconut shell fiber) combined with special aggregates (such as coral aggregate, desalinated sea sand, and recycled aggregate) to improve the overall stability of the concrete. Mixing equipment is required during the production process of marine concrete.
[0003] Traditional mixing shafts mostly rotate at a fixed height, resulting in extremely poor mixing uniformity of fibers with aggregates and cementitious materials (such as cement and mineral admixtures). Therefore, an improvement has been made to a fiber-reinforced aggregate mixing device for marine concrete. Utility Model Content
[0004] To address the shortcomings of existing technologies, this application provides a fiber-reinforced aggregate mixing device for marine concrete, which overcomes the deficiencies of existing technologies and aims to solve the problem that traditional mixing shafts mostly rotate at a fixed height, resulting in extremely poor mixing uniformity of fibers with aggregates and cementitious materials (such as cement and mineral admixtures).
[0005] To achieve the above objectives, this application provides the following technical solution: a fiber-reinforced aggregate mixing device for marine concrete, comprising a mixing chamber, an internal stirring shaft, a plurality of stirring blades fixedly connected to the outer wall of the stirring shaft, a sealing cover on the top of the mixing chamber, a mounting frame fixedly mounted on the top of the sealing cover, a fixed cylinder fixedly mounted inside the mounting frame, a transmission rod inside the fixed cylinder, a stirring motor for driving the transmission rod to rotate fixedly mounted on the top of the mounting frame, a lifting sleeve slidably sleeved on the outer wall of the transmission rod, the bottom of the lifting sleeve being fixedly connected to the stirring shaft by mounting screws, an annular groove being formed on the inner wall of the fixed cylinder, a protrusion adapted to the annular groove being formed on the outer wall of the lifting sleeve, and the lifting sleeve being slidably connected to the annular groove through the protrusion, and a feed inlet and an aggregate grinding unit being respectively provided on both sides of the top of the sealing cover located on the mounting frame.
[0006] By adopting the above technical solution, small particles are directly fed into the mixing chamber through the feed inlet, while large aggregates are first ground and crushed by the aggregate grinding unit before being fed into the mixing chamber, making it easier for the aggregates to mix with other materials. The stirring motor drives the transmission rod to rotate, and the lifting sleeve sleeved on the outer wall of the transmission rod can rotate synchronously with the transmission rod and slide up and down along the annular groove through the sliding fit between the protrusion and the annular groove. The bottom of the lifting sleeve is fixedly connected to the stirring shaft. Therefore, the stirring shaft and stirring blades can simultaneously complete the rotational stirring and the axial lifting movement, covering areas of different heights in the mixing chamber, breaking up material stratification, and making the materials evenly mixed together, which helps to improve the mixing efficiency.
[0007] As a preferred technical solution of this application, the outer diameter of the lifting sleeve is adapted to the inner diameter of the fixed cylinder, a rectangular groove is provided at the top of the lifting sleeve, the lower end of the transmission rod is located inside the rectangular groove, and the outer dimensions of the transmission rod are adapted to the inner space dimensions of the rectangular groove. The lifting sleeve is slidably sleeved on the outer wall of the transmission rod through the rectangular groove.
[0008] By adopting the above technical solution, when the transmission rod is driven to rotate by the stirring motor, it will directly drive the lifting sleeve to rotate synchronously through the inner wall of the rectangular groove, ensuring that the stirring shaft obtains stable rotational power and avoiding stirring failure caused by slippage. The fixed cylinder provides radial constraint for the lifting sleeve, preventing it from shifting or shaking due to centrifugal force or material resistance during rotation and lifting, and ensuring that the stirring shaft moves along the fixed axis.
[0009] As a preferred technical solution of this application, the aggregate grinding unit includes a feed cylinder fixedly installed on a sealing cover. Two rotating rods are rotatably connected inside the feed cylinder. Grinding rollers are fixedly sleeved on the outer walls of the two rotating rods inside the feed cylinder. A drive motor is provided on one side of the feed cylinder, and one end of one of the rotating rods is fixedly connected to the output end of the drive motor.
[0010] By adopting the above technical solution, grinding rollers are fixedly sleeved on the outer walls of the two rotating rods inside the feed cylinder. The drive motor drives one of the rotating rods to rotate, which is used to form a relatively crushing grinding gap. When large pieces of aggregate are fed from the feed cylinder, they will be squeezed and sheared by the rotating grinding rollers and crushed into finer particles with more uniform particle size.
[0011] As a preferred technical solution of this application, the upper surface of the sealing cover is fixedly mounted with a mounting base on one side of the feed cylinder, and the top of the mounting base is in contact with the bottom of the drive motor.
[0012] By adopting the above technical solution, the drive motor is limited and fixed by the mounting bracket, which prevents the drive motor from shaking and ensures the working stability of the drive motor.
[0013] As a preferred technical solution of this application, a pair of guide plates are arranged parallel to each other inside the feed cylinder above the grinding roller.
[0014] By adopting the above technical solution, the aggregate is guided by the guide plate into the feed cylinder, ensuring that the aggregate passes between the two grinding rollers.
[0015] As a preferred technical solution of this application, both the stirring shaft and the stirring blades are stainless steel components, and there is a gap between the stirring blades and the mixing box.
[0016] By adopting the above technical solution, the stirring shaft and stirring blades made of stainless steel have strong corrosion resistance, are not easily damaged, have a long service life, and the gap between the stirring blades and the mixing box ensures the safety of the device.
[0017] As a preferred technical solution of this application, the lower end of the mixing box is fixedly connected to a feeding pipe, and a valve is provided on the feeding pipe.
[0018] By adopting the above technical solution, the valve is in the closed state during the mixing process, which can completely seal the fiber, aggregate, cementitious materials and other materials in the mixing box, and the mixed materials are discharged through the discharge pipe.
[0019] In summary, the beneficial effects of this application are as follows:
[0020] 1. In this application, small particles are directly fed into the mixing chamber through the feed inlet, while large aggregates are first ground and crushed by the aggregate grinding unit before being fed into the mixing chamber, making it easier for the aggregates to mix with other materials. The stirring motor drives the transmission rod to rotate, and the lifting sleeve sleeved on the outer wall of the transmission rod can rotate synchronously with the transmission rod and slide up and down along the annular groove through the sliding fit between the protrusion and the annular groove. The bottom of the lifting sleeve is fixedly connected to the stirring shaft. Therefore, the stirring shaft and the stirring blades can simultaneously complete the rotational stirring and the axial lifting movement, covering areas of different heights in the mixing chamber, breaking up material stratification, and making the materials evenly mixed together, which helps to improve the mixing efficiency.
[0021] 2. In this application, the outer walls of the two rotating rods inside the feed cylinder are fixedly fitted with grinding rollers. The drive motor drives one of the rotating rods to rotate, which is used to form a relatively crushing grinding gap. When large pieces of aggregate are fed from the feed cylinder, they will be squeezed and sheared by the rotating grinding rollers and crushed into finer particles with more uniform particle size. The guide plate guides the aggregate fed into the feed cylinder to ensure that the aggregate passes between the two grinding rollers. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of this application;
[0023] Figure 2This is a frontal sectional view of the structure of this application;
[0024] Figure 3 This is a partial structural breakdown diagram of this application;
[0025] Figure 4 This is a complete structural schematic diagram of the aggregate grinding unit of this application;
[0026] Figure 5 This is a cross-sectional schematic diagram of the aggregate grinding unit of this application.
[0027] Explanation of reference numerals in the attached figures:
[0028] 1. Mixing box; 2. Sealing cover; 3. Mounting bracket; 4. Stirring motor; 5. Fixed cylinder; 6. Transmission rod; 7. Annular groove; 8. Lifting sleeve; 9. Rectangular groove; 10. Protrusion; 11. Stirring shaft; 12. Stirring blade; 13. Feed inlet; 14. Aggregate grinding unit; 141. Feeding cylinder; 142. Rotating rod; 143. Grinding roller; 144. Drive motor; 145. Mounting base; 146. Guide plate; 15. Discharge pipe; 16. Valve. Detailed Implementation
[0029] To make the technical means, creative features, objectives and effects of this application easy to understand, the following describes this application in conjunction with specific implementation methods.
[0030] like Figure 1 - Figure 5As shown in the figure, this embodiment provides a fiber-reinforced aggregate mixing device for marine concrete, including a mixing tank 1. A stirring shaft 11 is installed inside the mixing tank 1. Several stirring blades 12 are fixedly connected to the outer wall of the stirring shaft 11. A sealing cover 2 is installed on the top of the mixing tank 1. A mounting frame 3 is fixedly installed on the top of the sealing cover 2. A fixed cylinder 5 is fixedly installed inside the mounting frame 3. A transmission rod 6 is installed inside the fixed cylinder 5. A stirring motor 4, which drives the transmission rod 6 to rotate, is fixedly installed on the top of the mounting frame 3. A lifting sleeve 8 is slidably sleeved on the outer wall of the transmission rod 6. The bottom of the lifting sleeve 8 is fixedly connected to the stirring shaft 11 by mounting screws. An annular groove 7 is formed on the inner wall of the fixed cylinder 5. A protrusion 10, adapted to the annular groove 7, is provided on the outer wall of the lifting sleeve 8, and the lifting sleeve 8 is slidably connected to the annular groove 7 through the protrusion 10. The top of the sealing cover 2 is located on both sides of the mounting frame 3, with a feed inlet 13 and an aggregate grinding unit 14 respectively. In use, small particles are directly fed into the mixing box 1 through the feed inlet 13, while large aggregates are first ground and crushed by the aggregate grinding unit 14 before being fed into the mixing box 1, making it easier for the aggregates to mix with other materials. The stirring motor 4 drives the transmission rod 6 to rotate. The lifting sleeve 8, which is sleeved on the outer wall of the transmission rod 6, can rotate synchronously with the transmission rod 6 and slide up and down along the annular groove 7 through the sliding cooperation of the protrusion 10. The bottom of the lifting sleeve 8 is fixedly connected to the stirring shaft 11. Therefore, the stirring shaft 11 and the stirring blade 12 can simultaneously complete the rotational stirring and the axial lifting movement, covering areas of different heights in the mixing box 1, breaking up material stratification, and making the materials evenly mixed together, which helps to improve the mixing efficiency.
[0031] In this embodiment, as Figure 2 and 3 As shown, the outer diameter of the lifting sleeve 8 is matched with the inner diameter of the fixed cylinder 5. A rectangular groove 9 is provided at the top of the lifting sleeve 8. The lower end of the transmission rod 6 is located inside the rectangular groove 9, and the outer dimensions of the transmission rod 6 are matched with the inner dimensions of the rectangular groove 9. The lifting sleeve 8 is slidably sleeved on the outer wall of the transmission rod 6 through the rectangular groove 9. In use, when the transmission rod 6 is driven to rotate by the stirring motor 4, it will directly drive the lifting sleeve 8 to rotate synchronously through the inner wall of the rectangular groove 9, ensuring that the stirring shaft 11 obtains stable rotational power and avoiding stirring failure caused by slippage. The fixed cylinder 5 provides radial constraint for the lifting sleeve 8 to prevent it from shifting or shaking due to centrifugal force or material resistance during rotation and lifting, ensuring that the stirring shaft 11 moves along the fixed axis.
[0032] In this embodiment, as Figure 1 , 4As shown in Figure 5, the aggregate grinding unit 14 includes a feed cylinder 141 fixedly installed on the sealing cover 2. Two rotating rods 142 are rotatably connected inside the feed cylinder 141. Grinding rollers 143 are fixedly sleeved on the outer walls of the two rotating rods 142 inside the feed cylinder 141. A drive motor 144 is provided on one side of the feed cylinder 141. One end of one of the rotating rods 142 is fixedly connected to the output end of the drive motor 144. In use, the grinding rollers 143 are fixedly sleeved on the outer walls of the two rotating rods 142 inside the feed cylinder 141. The drive motor 144 drives one of the rotating rods 142 to rotate, so as to form a relatively crushing grinding gap. When large pieces of aggregate are fed from the feed cylinder 141, they will be squeezed and sheared by the rotating grinding rollers 143 and crushed into finer particles with more uniform particle size.
[0033] In this embodiment, as Figure 1 , 4 As shown in Figure 5, a mounting base 145 is fixedly installed on the upper surface of the sealing cover 2 on one side of the feed cylinder 141. The top of the mounting base 145 is in contact with the bottom of the drive motor 144. During use, the drive motor 144 is limited and fixed by the mounting base 145 to prevent the drive motor 144 from shaking and to ensure the working stability of the drive motor 144.
[0034] In this embodiment, as Figure 5 As shown, a pair of guide plates 146 are arranged parallel to each other inside the feed cylinder 141 above the grinding roller 143. In use, the guide plates 146 guide the aggregate fed into the feed cylinder 141 to ensure that the aggregate passes between the two grinding rollers 143.
[0035] In this embodiment, as Figure 2 As shown, both the stirring shaft 11 and the stirring blade 12 are stainless steel components, and there is a gap between the stirring blade 12 and the mixing box 1. During use, the stirring shaft 11 and the stirring blade 12, which are made of stainless steel, have strong corrosion resistance, are not easily damaged, and have a long service life. The gap between the stirring blade 12 and the mixing box 1 ensures the safety of the device.
[0036] In this embodiment, as Figure 2 As shown, a feed pipe 15 is fixedly connected to the lower end of the mixing box 1. A valve 16 is installed on the feed pipe 15. During use, the valve 16 is closed during the mixing process, which can completely seal the fiber, aggregate, cementitious materials and other materials in the mixing box 1. The mixed materials are discharged through the feed pipe 15.
[0037] The working principle of this application is as follows: When using the fiber-reinforced aggregate mixing equipment for marine concrete, small particles are directly fed into the mixing chamber 1 through the feed inlet 13, while large aggregates are fed into the feed cylinder 141. The aggregates are guided by the guide plate 146. The drive motor 144 is started, which drives one of the rotating rods 142 to rotate, thereby forming a relatively crushing grinding gap. When the aggregates pass between the two grinding rollers 143, they are squeezed and sheared by the rotating grinding rollers 143, breaking them into finer particles with more uniform particle size. After the aggregates are completely fed into the mixing chamber 1, the stirring motor 4 is started to drive the transmission rod 6 to rotate. The lifting sleeve 8 sleeved on the outer wall of the transmission rod 6 can rotate synchronously with the transmission rod 6 and slide up and down along the annular groove 7 through the sliding cooperation of the protrusion 10. The lifting sleeve 8 drives the stirring shaft 11 to move synchronously, so that the stirring shaft 11 and the stirring blade 12 can simultaneously complete the rotational stirring and the axial lifting movement, covering areas of different heights in the mixing chamber 1, breaking up the material stratification, and making the material uniformly mixed together.
[0038] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0039] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0040] The present application has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on its spirit and principles, and these modifications and variations are also within the scope of the present application.
Claims
1. A fiber reinforced aggregate mixing apparatus for marine concrete, comprising a mixing tank (1), characterized in that, The mixing tank (1) is equipped with a stirring shaft (11) inside. Several stirring blades (12) are fixedly connected to the outer wall of the stirring shaft (11). The mixing tank (1) is equipped with a sealing cover (2) on top. A mounting bracket (3) is fixedly installed on the top of the sealing cover (2). A fixed cylinder (5) is fixedly installed inside the mounting bracket (3). A transmission rod (6) is provided inside the fixed cylinder (5). A stirring motor (4) that drives the transmission rod (6) to rotate is fixedly installed on the top of the mounting bracket (3). (6) has a lifting sleeve (8) slidably sleeved on its outer wall. The bottom of the lifting sleeve (8) is fixedly connected to the stirring shaft (11) by mounting screws. The inner wall of the fixed cylinder (5) is provided with an annular groove (7). The outer wall of the lifting sleeve (8) is provided with a protrusion (10) that matches the annular groove (7). The lifting sleeve (8) is slidably connected to the annular groove (7) through the protrusion (10). The top of the sealing cover (2) is provided with a feed inlet (13) and an aggregate grinding unit (14) on both sides of the mounting frame (3).
2. The fiber reinforced aggregate mixing apparatus for marine concrete according to claim 1, wherein The outer diameter of the lifting sleeve (8) is adapted to the inner diameter of the fixed cylinder (5). A rectangular groove (9) is provided at the top of the lifting sleeve (8). The lower end of the transmission rod (6) is located inside the rectangular groove (9). The outer dimensions of the transmission rod (6) are adapted to the inner space dimensions of the rectangular groove (9). The lifting sleeve (8) is slidably sleeved on the outer wall of the transmission rod (6) through the rectangular groove (9).
3. The fiber-reinforced aggregate mixing equipment for marine concrete according to claim 1, characterized in that, The aggregate grinding unit (14) includes a feed cylinder (141) fixedly installed on the sealing cover (2). Two rotating rods (142) are rotatably connected inside the feed cylinder (141). Grinding rollers (143) are fixedly sleeved on the outer walls of the two rotating rods (142) inside the feed cylinder (141). A drive motor (144) is provided on one side of the feed cylinder (141). One end of one of the rotating rods (142) is fixedly connected to the output end of the drive motor (144).
4. The fiber-reinforced aggregate mixing equipment for marine concrete according to claim 3, characterized in that, The upper surface of the sealing cover (2) is fixedly mounted with a mounting base (145) on one side of the feed cylinder (141), and the top of the mounting base (145) is in contact with the bottom of the drive motor (144).
5. A fiber-reinforced aggregate mixing device for marine concrete according to claim 3, characterized in that, Inside the feed cylinder (141), a pair of guide plates (146) are arranged parallel to each other above the grinding roller (143).
6. The fiber-reinforced aggregate mixing equipment for marine concrete according to claim 1, characterized in that, The stirring shaft (11) and stirring blade (12) are both stainless steel components, and there is a gap between the stirring blade (12) and the mixing box (1).
7. A fiber-reinforced aggregate mixing device for marine concrete according to claim 1, characterized in that, The lower end of the mixing box (1) is fixedly connected to a feeding pipe (15), and a valve (16) is provided on the feeding pipe (15).