A step-by-step feeding type concrete mixing device

Abstract

The utility model belongs to concrete production technical field, concretely relates to a kind of step-by-step feeding formula concrete mixing device, including support frame, premixing mechanism and conveying mechanism, the premixing mechanism is set to multiple groups, and multiple groups are staggered distribution up and down, the support frame is provided with the suspension bracket for supporting premixing mechanism, the conveying mechanism is provided with multiple groups, and each group is set between two premixing mechanisms adjacent up and down.The utility model is staggered distribution up and down by setting multiple premixing mechanisms and the conveying mechanism between them, and is sequentially mixed under the assistance of gravity and conveying mechanism through each premixing mechanism, finally, finished product is discharged by the lowermost discharge valve, the design completely eliminates the downtime waiting time caused by discharge, cleaning, feeding in traditional single-tank mode, realizes the parallel processing and continuous in-out of different batches of materials, to greatly improve equipment utilization and unit time output, significantly improve production efficiency and concrete supply demand.

Description

Technical Field

[0001] This utility model belongs to the field of concrete production technology, specifically relating to a step-by-step feeding type concrete mixing device. Background Technology

[0002] The single-tank circulating mixing mode commonly used in existing concrete production processes, where all raw materials are added to a single mixing tank at once for centralized mixing, and the finished product is discharged after a preset mixing time, before the next batch is added and mixed, has significant limitations: First, during the unloading, cleaning, and preparation stages for re-addition, the mixing device is either running unloaded or stopped, resulting in a double waste of time and energy, directly hindering the improvement of production efficiency; second, it is difficult to precisely control the optimal mixing time and sequence for different materials, affecting the final homogeneity and strength of the concrete; and third, the long single mixing cycle makes it difficult to meet the concrete supply requirements of large-scale continuous construction, becoming a production bottleneck restricting continuous construction.

[0003] Therefore, this utility model proposes a step-by-step feeding concrete mixing device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a step-by-step feeding concrete mixing device that can solve the above-mentioned technical problems.

[0005] The specific technical solution adopted by this utility model is as follows: This utility model provides a step-by-step feeding concrete mixing device, including a support frame, a pre-mixing mechanism and a conveying mechanism. The pre-mixing mechanism is configured in multiple groups, and the multiple groups are distributed in a staggered manner. The support frame is provided with a suspension frame for supporting the pre-mixing mechanism. The conveying mechanism is configured in multiple groups, and each group is set between two adjacent pre-mixing mechanisms. A controller is installed on the underside of one of the legs of the support frame. Multiple raw material tanks are installed on the upper surface of the support frame, and a discharge valve is installed on the bottom surface of each raw material tank. A guide pipe is installed at the outlet end of the discharge valve. The outlet ends of all the guide pipes are configured to correspond to the uppermost premixing mechanism.

[0006] Preferably, the premixing mechanism includes a premixing tank and a stirring mechanism disposed inside the premixing tank. An extension plate is fixedly provided on the upper enlarged end of the premixing tank. The extension plate overlaps on the suspension frame and is fixed by bolts and nuts.

[0007] Preferably, the stirring mechanism includes a stirring shaft, stirring paddles, and a stirring motor. The stirring motor is mounted on a fixed frame, which is detachably mounted on an extension plate. Multiple stirring paddles are provided and axially mounted on the stirring shaft. The stirring shaft is rotatably mounted on a stabilizing frame via bearings. The stabilizing frame is detachably mounted on the upper inner wall of the premix tank. The stirring shaft is connected to the output shaft of the stirring motor via a coupling.

[0008] Preferably, the conveying mechanism includes an outer frame and a spiral blade disposed within the outer frame. The inner side of the outer frame is configured as a circular cavity structure that encloses the spiral blade. A conveying shaft that passes through the circular cavity is rotatably mounted on the outer frame via bearings. The spiral blade is disposed on the conveying shaft. A conveying motor is mounted on the side of the outer frame. The output shaft of the conveying motor is connected to one end of the conveying shaft via a coupling.

[0009] Preferably, a feeding connection frame that communicates with the inner cavity of the outer frame is provided on the side of the outer frame near the conveying motor. The premix tank is provided with an installation plate on its lower side, and the feed connection frame is detachably installed on the bottom surface of the installation plate.

[0010] Preferably, the opposite sides of the outer frame are respectively equipped with extension support plates, the two extension support plates overlap on the outer extension plate and are fastened by bolts and nuts, and the bottom surface of the outer frame away from the conveying motor has a discharge port that communicates with the internal cavity, and the discharge port corresponds to the opening of the premix tank on the lower side.

[0011] Preferably, a discharge valve is installed on the mounting plate at the lower end of the bottom of the premix tank.

[0012] The beneficial effects are: This invention constructs a continuous production line system by setting up multiple sets of pre-mixing mechanisms distributed vertically and vertically, with conveying mechanisms in between, and multiple raw material tanks at the top. After the raw materials are put in from the top, they are mixed sequentially through each level of pre-mixing mechanism with the assistance of gravity and the conveying mechanism, and finally discharged as finished products through the discharge valve at the bottom. This design completely eliminates the downtime caused by unloading, cleaning, and feeding in the traditional single-tank mode, and realizes parallel processing and continuous feeding and discharging of different batches of materials, thereby greatly improving equipment utilization and output per unit time, and significantly improving production efficiency and concrete supply demand. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the premixing mechanism and conveying mechanism in their separated states according to this utility model; Figure 3This is a cross-sectional structural diagram of the premixing mechanism and conveying mechanism of this utility model in their separated state.

[0014] The attached diagram lists the components represented by each number as follows: 1. Support frame; 2. Premixing mechanism; 21. Premixing tank; 22. Outer plate; 23. Mounting plate; 24. Mixing shaft; 24a. Mixing paddle; 25. Stabilizing frame; 26. Mixing motor; 27. Fixing frame; 3. Conveying mechanism; 31. Outer frame; 31a. Extension support plate; 32. Feed connection frame; 33. Conveying shaft; 34. Conveying motor; 35. Spiral blade; 4. Discharge valve; 5. Suspension frame; 6. Raw material tank; 7. Discharge valve; 8. Guide pipe; 9. Controller. Detailed Implementation

[0015] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0016] like Figure 1-3 As shown, a step-by-step feeding concrete mixing device includes a support frame 1, a pre-mixing mechanism 2, and a conveying mechanism 3. The pre-mixing mechanism 2 is configured in multiple groups, and the multiple groups are distributed in a staggered manner. The support frame 1 is provided with a suspension frame 5 for supporting the pre-mixing mechanism 2. The conveying mechanism 3 is configured in multiple groups, and each group is located between two adjacent pre-mixing mechanisms 2. A controller 9 is installed on the lower side of one of the legs of the support frame 1. The output end of the controller 9 is electrically connected to the mixing motor 26, the conveying motor 34, and multiple discharge valves 7. Multiple raw material tanks 6 are installed on the upper surface of the support frame 1. Each raw material tank 6 is equipped with a discharge valve 7 on its bottom surface. A guide pipe 8 is installed at the outlet end of the discharge valve 7. The discharge valve 7 is preferably a pneumatic (or electric) butterfly valve or a bar valve. The outlet ends of the multiple guide pipes 8 are all set to correspond to the uppermost premixing mechanism 2.

[0017] As an optional implementation, the premixing mechanism 2 includes a premixing tank 21 and a stirring mechanism disposed in the premixing tank 21. An extension plate 22 is fixedly provided on the upper enlarged end of the premixing tank 21. The extension plate 22 overlaps on the suspension frame 5 and is fixed by bolts and nuts. This facilitates the upper and lower misalignment and fixation of the premixing tank 21 according to the cooperation between the premixing tank 21 and the suspension frame 5.

[0018] See attached document Figure 2 and attached Figure 3The mixing mechanism includes a mixing shaft 24, a mixing paddle 24a, and a mixing motor 26. The mixing motor 26 is mounted on a fixed frame 27, which is detachably mounted on an extension plate 22. Multiple mixing paddles 24a are configured and axially mounted on the mixing shaft 24. The mixing shaft 24 is rotatably mounted on a stabilizing frame 25 via bearings. The stabilizing frame 25 is detachably mounted on the upper inner wall of the premix tank 21. The mixing shaft 24 is connected to the output shaft of the mixing motor 26 via a coupling, so that the mixing motor 26 can drive the mixing paddles 24a to mix the concrete material in the premix tank 21.

[0019] Furthermore, the conveying mechanism 3 includes an outer frame 31 and a spiral blade 35 disposed within the outer frame 31. The inner side of the outer frame 31 is configured as a circular cavity structure that encloses the spiral blade 35. A conveying shaft 33 that passes through the circular cavity is rotatably mounted on the outer frame 31 via bearings. The spiral blade 35 is disposed on the conveying shaft 33. A conveying motor 34 is mounted on the side of the outer frame 31. The output shaft of the conveying motor 34 is connected to one end of the conveying shaft 33 via a coupling. This allows the conveying motor 34 to drive the conveying shaft 33 and the spiral blade 35 to rotate, thereby conveying the concrete material in the premix tank 21 downwards.

[0020] Furthermore, a feeding connection frame 32 that communicates with the inner cavity of the outer frame 31 is provided on the surface of the outer frame 31 near the conveyor motor 34. A mounting plate 23 is provided on the lower side of the premix tank 21. The feed connection frame 32 can be detachably installed on the bottom surface of the mounting plate 23, so that the outlet end of the conveying mechanism 3 can be installed in accordance with the premix tank 21 which is misaligned on the lower side.

[0021] Furthermore, extension support plates 31a are installed on opposite sides of the outer frame 31. The two extension support plates 31a overlap on the outer extension plate 22 and are fastened with bolts and nuts. A discharge port communicating with the internal cavity is opened on the bottom surface of the outer frame 31 away from the conveying motor 34, and the discharge port corresponds to the opening of the lower premix tank 21. This allows the mixture in the upper premix tank 21 to be conveyed to the lower premix tank 21 with the corresponding misalignment for further mixing.

[0022] See attached document Figure 1 A discharge valve 4 is installed on the mounting plate 23 at the lower end of the bottom premix tank 21. It is used to control the discharge of concrete slurry in the bottom premix tank 21. The discharge valve 4 can be a pneumatic (or electric) knife gate valve or a butterfly valve. If a pneumatic (or electric) knife gate valve is selected, its control terminal is electrically connected to the controller 9.

[0023] Using the above structure, firstly, various raw materials are stored in multiple raw material tanks 6 at the top of the supporting frame 1. The operation controller 9 sequentially opens the discharge valves 7 at the bottom of each raw material tank 6 according to the proportion, and the raw materials are fed into the uppermost pre-mixing mechanism 2 through the guide pipe 8. Subsequently, the stirring motor 26 of the uppermost pre-mixing mechanism 2 starts, and drives multiple sets of stirring paddles 24a through the stirring shaft 24 to perform the first stage of stirring and mixing of the initial raw materials, forming a preliminary mixture. Under the combined action of gravity and the conveying mechanism 3, the preliminary mixture is driven by the conveying motor 34 of the upper conveying mechanism 3 to rotate the conveying shaft 33 and the spiral blades 35, pushing the mixture horizontally to the outer frame 31. The material is discharged from the far end of the discharge port and precisely falls into the next-stage premixing tank 21 arranged below it, starting the second stage of mixing. This conveying and mixing process is repeated between the upper and lower adjacent premixing units 2. The mixture flows through each stage of the premixing unit 2 in sequence, and is sheared and mixed again by the mixing paddle 24a at each stage. At the same time, it is also mixed again during the conveying process, realizing the step-by-step feeding and multiple fine mixing of materials. Finally, the qualified concrete slurry after being fully mixed by the last stage premixing unit 2 is discharged through the discharge valve 4 installed on the bottom mounting plate 23 of the bottom premixing tank 21, completing the entire continuous and efficient concrete preparation process.

[0024] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art, and is common knowledge in the field. Furthermore, this application is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail here. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented in accordance with conventional methods in the field and relevant national standards.

Claims

1. A staged feeding type concrete mixing device, characterized in that: It includes a support frame (1), a premixing mechanism (2) and a conveying mechanism (3). The premixing mechanism (2) is configured in multiple groups, and the multiple groups are staggered vertically. The support frame (1) is provided with a suspension frame (5) for supporting the premixing mechanism (2). The conveying mechanism (3) is configured in multiple groups, and each group is located between two adjacent premixing mechanisms (2) vertically. A controller (9) is installed on the lower side of one of the legs of the support frame (1). The upper surface of the support frame (1) is equipped with a plurality of raw material tanks (6), and the bottom surface of each raw material tank (6) is equipped with a discharge valve (7), and the outlet end of the discharge valve (7) is equipped with a guide pipe (8). The outlet ends of all the guide pipes (8) are configured to correspond to the uppermost premixing mechanism (2).

2. The step-by-step feeding concrete mixing device according to claim 1, characterized in that: The premixing mechanism (2) includes a premixing tank (21) and a stirring mechanism disposed in the premixing tank (21). An extension plate (22) is fixedly provided on the upper enlarged end of the premixing tank (21). The extension plate (22) overlaps on the suspension frame (5) and is fixed by bolts and nuts.

3. The step-by-step feeding concrete mixing device according to claim 2, characterized in that: The stirring mechanism includes a stirring shaft (24), a stirring paddle (24a), and a stirring motor (26). The stirring motor (26) is mounted on a fixed frame (27), which is detachably mounted on an extension plate (22). The stirring paddle (24a) is configured in multiple sets and is axially mounted on the stirring shaft (24). The stirring shaft (24) is rotatably mounted on a stabilizing frame (25) via bearings. The stabilizing frame (25) is detachably mounted on the upper side of the inner wall of the premix tank (21). The stirring shaft (24) is connected to the output shaft of the stirring motor (26) via a coupling.

4. A staged feeding concrete mixing device according to claim 3, characterized in that: The conveying mechanism (3) includes an outer frame (31) and a spiral blade (35) disposed inside the outer frame (31). The inner side of the outer frame (31) is configured as a circular cavity structure that encloses the spiral blade (35). A conveying shaft (33) that passes through the circular cavity is rotatably mounted on the outer frame (31) through a bearing. The spiral blade (35) is disposed on the conveying shaft (33). A conveying motor (34) is mounted on the side of the outer frame (31). The output shaft of the conveying motor (34) is connected to one end of the conveying shaft (33) through a coupling.

5. A staged feeding concrete mixing device according to claim 4, characterized in that: The outer frame (31) has a feeding connection frame (32) that communicates with the inner cavity of the outer frame (31) on the side of the outer frame (31) near the conveying motor (34). The premix tank (21) is provided with an installation plate (23) on its lower side, and the feed connection frame (32) is detachably installed on the bottom surface of the installation plate (23).

6. A staged feeding concrete mixing device according to claim 5, characterized in that: The outer frame (31) has extension support plates (31a) installed on opposite sides. The two extension support plates (31a) overlap on the outer extension plate (22) and are fastened with bolts and nuts. The bottom surface of the outer frame (31) away from the conveying motor (34) has a discharge port that communicates with the internal cavity, and the discharge port corresponds to the opening of the premix tank (21) on the lower side.

7. A staged feeding concrete mixing device according to claim 6, characterized in that: A discharge valve (4) is installed on the mounting plate (23) at the lower end of the premix tank (21) at the bottom.

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