Concrete additive stirring device and premixing device

Abstract

The utility model provides a kind of concrete additive stirring device and premixing device, including stirring bin, valve is equipped in stirring bin one side bottom, stirring bin bottom is equipped with multiple support legs, support frame is equipped in stirring bin top, support frame middle part is equipped with with stirring bin coaxial mounting shaft, driving shaft is coaxially rotated and arranged in stirring bin, driving shaft bottom is connected with driving device, driving shaft top is coaxially connected with transmission housing, transmission housing top is sealed by end cap, mounting shaft penetrates end cap and extends into transmission housing, and mounting shaft is rotatably connected with end cap. When the utility model is used, each raw material of additive and concrete is poured into stirring bin, driving motor drives transmission housing and stirring shaft to rotate, while rotating around the center of stirring bin, the stirring shaft will also rotate, so that the stirring shaft is stirred in the process of rotating, so that the additive and each raw material of concrete in stirring bin can be quickly mixed.

Description

Technical Field

[0001] This utility model relates to the field of concrete mixing technology, specifically to a concrete additive mixing device and a premixing device. Background Technology

[0002] Concrete mixing is a process of thoroughly mixing cement, water, and various additives. Specifically, it involves using mixing equipment to combine cement, aggregates, and water to form a concrete mixture. The main purpose of concrete mixing is to ensure that all raw materials are uniformly mixed to achieve the desired physical and chemical properties. During mixing, cement, aggregates, and water interpenetrate and bind together through mechanical action, forming concrete with a certain strength and durability. The uniformity of mixing directly affects the strength, durability, and workability of the concrete.

[0003] Existing concrete mixing plants are single-direction mixing devices. These devices cannot create rapid tumbling within the mixing chamber, resulting in low mixing efficiency and uneven concrete mixing. Therefore, we propose a concrete additive mixing device and a premixing device. Utility Model Content

[0004] This utility model provides a concrete additive mixing device and a premixing device, which has the advantage that the mixing shaft can mix while rotating, allowing the additives and various raw materials of concrete in the mixing chamber to be mixed quickly, thus solving the problems mentioned in the background art.

[0005] The technical solution of this utility model is implemented as follows: A concrete additive mixing device includes a mixing chamber, a valve at the bottom of one side of the mixing chamber, multiple support legs at the bottom of the mixing chamber, a support frame at the top of the mixing chamber, an installation shaft coaxial with the mixing chamber in the middle of the support frame, a drive shaft rotatably coaxially arranged inside the mixing chamber, the bottom of the drive shaft being connected to a drive device, the top of the drive shaft being coaxially connected to a transmission housing, the top of the transmission housing being sealed by an end cover, the installation shaft penetrating the end cover and extending into the transmission housing, and the installation shaft being rotatably connected to the end cover, multiple mixing shafts parallel to each other around the drive shaft, the tops of the mixing shafts extending into the transmission housing and being rotatably connected to each other, the tops of the mixing shafts being connected to the installation shafts through a transmission mechanism, and mixing blades being provided on the side of the mixing shafts.

[0006] Preferably, the stirring blades are parallel to the stirring shaft, and the stirring blades are connected to the stirring shaft by a support rod.

[0007] Preferably, the transmission mechanism includes multiple transmission rods positioned corresponding to the stirring shaft. The transmission rods are radially arranged with the stirring shaft and the drive shaft, respectively. Each stirring shaft is rotatably mounted with a bearing housing, which is located inside the transmission housing. Bevel gears are provided at both ends of the transmission rods, below the mounting shaft, and at the top of the stirring shaft, with adjacent bevel gears meshing with each other.

[0008] Preferably, the drive shaft is coaxially placed in the support cylinder, with both ends of the support cylinder rotatably connected to the drive shaft, and the bottom of the support cylinder is coaxially fixed to the mixing chamber.

[0009] Preferably, the drive device includes a reducer connected to the bottom of the drive shaft. The reducer is mounted on a fixed bracket, which is connected to a support leg. A drive motor is provided on one side of the reducer. The drive motor is mounted on the support leg via a motor bracket. Pulleys are provided on the output shaft of the drive motor and the input shaft of the reducer, and the pulleys are connected by a belt.

[0010] Preferably, the valve includes a discharge port located on one side of the bottom of the mixing chamber, a guide trough located below the discharge port, the guide trough being installed below the mixing chamber, the discharge port being sealed by a valve plate, the side of the valve plate away from the discharge port being connected to an arc-shaped arm, a rotating rod vertically located at one end of the arc-shaped arm, the rotating rod being rotatably mounted in a support, the support being connected to the side of the mixing chamber, a swing arm located at the top of the rotating rod, rotating the swing arm can drive the rotating rod to rotate in the support, so that the rotating rod drives the valve plate to be placed in the discharge port for sealing, the mixing chamber above the discharge port is provided with a connecting seat corresponding to the swing arm, when the valve plate is placed in the discharge port, the swing arm is placed at the connecting seat, both the swing arm and the connecting seat are provided with insertion holes, the two insertion holes being fixed by pins.

[0011] Preferably, a first shovel plate is provided on one side of the mixing device, and the first shovel plate is connected to the transmission housing through a second support arm. A second shovel plate is provided on the other side of the mixing device, and the second shovel plate is connected to the transmission housing through a first support arm. The first shovel plate and the second shovel plate are respectively at a certain angle to the bottom of the mixing chamber. The first shovel plate and the second shovel plate are distributed in a "V" shape, and the mixing device is located in the middle of the "V" shape.

[0012] Furthermore, this utility model also proposes a premixing device, which is a stirring blade, and the stirring blade is provided with at least one spiral bending part.

[0013] Compared with the prior art, in use, the additives and concrete raw materials are poured into the mixing chamber, and the drive motor drives the transmission housing and the mixing shaft to rotate. While the mixing shaft rotates around the center of the mixing chamber, the mixing shaft also rotates on its own axis, so that the mixing shaft can mix while rotating, which can quickly mix the additives and concrete raw materials in the mixing chamber. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0016] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0017] Figure 3 This is a schematic diagram of the internal structure of the present invention. Figure 1 .

[0018] Figure 4 This is a schematic diagram of the internal structure of the present invention. Figure 2 .

[0019] Figure 5 This is a schematic diagram of the internal structure of the transmission housing of this utility model.

[0020] Figure 6 This is a schematic diagram of the structure of the stirring blade of this utility model.

[0021] Figure 7 This is a schematic diagram of the structure of the shovel plate and the stirring blade of this utility model.

[0022] Figure 8 This is a schematic diagram of the bottom structure of the mixing chamber of this utility model.

[0023] In the diagram: 1. Mixing chamber; 2. Support frame; 3. Transmission housing; 4. End cover; 5. First support arm; 6. Swing arm; 7. Connecting seat; 8. Rotating rod; 9. Support; 10. Arc arm; 11. Valve plate; 12. Discharge port; 13. Guide chute; 14. Fixed bracket; 15. Motor bracket; 16. Drive motor; 17. Support leg; 18. Reducer; 19. Support frame; 20. Drive shaft; 21. Spiral bend; 22. Bearing seat; 23. Bevel gear; 24. Second support arm; 25. Mounting shaft; 26. Support cylinder; 27. Mixing blade; 28. First shovel plate; 29. ​​Mixing shaft; 30. Second shovel plate; 31. Transmission rod. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Reference Figures 1 to 8 This utility model provides a technical solution: a concrete additive mixing device, including a mixing chamber 1, with multiple support legs 17 at the bottom of the mixing chamber 1, such as... Figure 8 As shown, the support leg 17 is installed below the support frame 19. The support frame 19 is provided to support and strengthen the bottom of the mixing chamber 1. During installation, the mixing chamber 1 is installed on top of the support frame 19.

[0026] A drive unit is located below the support frame 19. The drive unit includes a reducer 18, which is mounted on a fixed bracket 14 connected to the support leg 17. A drive motor 16 is located on one side of the reducer 18 and is mounted on the support leg 17 via a motor bracket 15. Pulleys are respectively located on the output shaft of the drive motor 16 and the input shaft of the reducer 18, and the pulleys are connected by a belt. In this way, when the drive motor 16 rotates, it drives the reducer 18 to rotate, and the torque of the drive motor can be amplified by the reducer.

[0027] The top of the mixing chamber 1 is equipped with a support frame 2. The support frame 2 is horizontal and its two ends are bolted to the base. The base is installed on the top of the mixing chamber 1. So when installing the support frame 2, you only need to place it on the top of the mixing chamber 1 and connect the two ends of the support frame 2 to the base with bolts.

[0028] A drive shaft 20 is coaxially mounted inside the mixing chamber 1. To increase the support strength of the drive shaft 20, such as... Figure 5 and Figure 6 As shown, the drive shaft 20 is placed coaxially in the support cylinder 26, and both ends of the support cylinder 26 are rotatably connected to the drive shaft 20. In actual use, the drive shaft 20 is not directly connected to the mixing chamber 1, but the bottom of the support cylinder 26 is fixed coaxially with the mixing chamber 1. This allows the support cylinder 26 to support the drive shaft 20, making the drive shaft 20 more stable.

[0029] The bottom of the drive shaft 20 is actually connected to the drive unit, that is, the drive shaft 20 is connected to the reducer 18, and the drive unit is used to drive the drive shaft 20 to rotate. The top of the drive shaft 20 is coaxially connected to the transmission housing 3, and the top of the transmission housing 3 is sealed by an end cover 4. The end cover 4 is fastened to the top of the transmission housing 3 by bolts, which facilitates the disassembly and installation of the end cover 4. Figure 1 and Figure 2As shown, the support frame 2 is located directly above the transmission housing 3. The support frame 2 has a mounting shaft 25 coaxial with the mixing chamber 1 in the middle. The mounting shaft 25 passes through the end cover 4 and extends into the transmission housing 3. The mounting shaft 25 and the end cover 4 are rotatably connected. The two must be rotatably connected because in actual use, the drive motor 16 will drive the drive shaft 20 to rotate through the reducer 18, thereby causing the drive shaft 20 to drive the transmission housing 3 to rotate together. Therefore, the mounting shaft 25 and the end cover 4 cannot be fixed.

[0030] Multiple stirring shafts 29 are arranged parallel to each other around the drive shaft 20. The top of each stirring shaft 29 extends into the transmission housing 3 and the two are rotatably connected. The top of each stirring shaft 29 is connected to the mounting shaft 25 through a transmission mechanism. The mounting shaft 25 can drive each stirring shaft 29 to rotate simultaneously through the transmission mechanism. The specific structure of the transmission mechanism is as follows: Figure 5 As shown, the transmission mechanism includes multiple transmission rods 31 whose positions correspond to the stirring shaft 29. The transmission rods 31 are radially arranged with the stirring shaft 29 and the drive shaft 20 respectively. Each stirring shaft 29 is rotatably mounted with a bearing seat 22. The bearing seats 22 are arranged inside the transmission housing 3. There are two bearing seats 22 and they are symmetrically distributed at both ends of the stirring shaft 29, so that both ends of the stirring shaft 29 are supported.

[0031] Both ends of the transmission rod 31, the lower part of the mounting shaft 25, and the top of the stirring shaft 29 are equipped with bevel gears 23, and adjacent bevel gears 23 mesh with each other. Therefore, when the transmission housing 3 rotates with the drive shaft 20, each transmission rod 31 will rotate around the mounting shaft 25. Since the mounting shaft 25 and the transmission rod 31, and the transmission rod 31 and the stirring shaft 29 are all connected by bevel gears 23, the rotation of the transmission rod 31 around the mounting shaft 25 will drive the stirring shaft 29 to rotate. Figure 3 and Figure 4 As shown, a stirring blade 27 is provided on the side of the stirring shaft 29. The stirring blade 27 rotates as the stirring shaft 29 rotates. The stirring blade 27 is parallel to the stirring shaft 29 and is connected to the stirring shaft 29 by a support rod.

[0032] Based on the above embodiments, the specific process of the concrete additive mixing device is as follows: First, the additive and various raw materials of concrete are poured into the mixing chamber 1. Then, the drive motor 16 is started, which drives the support cylinder 26 to rotate. The rotation of the support cylinder 26 drives the transmission housing 3 and the mixing shaft 29 to rotate. While the mixing shaft 29 rotates around the center of the mixing chamber 1 (which can also be called the support cylinder 26 or the drive shaft 20), the mixing shaft 29 also rotates on its own axis, so that the mixing shaft 29 mixes while rotating, which allows the additive and various raw materials of concrete in the mixing chamber 1 to be quickly mixed.

[0033] Furthermore, to facilitate the rapid discharge of concrete from mixing chamber 1, a valve is installed at the bottom of one side of mixing chamber 1. For example... Figure 1 As shown, the valve includes a discharge port 12 located on one side of the bottom of the mixing chamber 1, and a guide chute 13 located below the discharge port 12. The guide chute 13 is installed below the mixing chamber 1.

[0034] The discharge port 12 is sealed by a valve plate 11. The side of the valve plate 11 away from the discharge port 12 is connected to an arc-shaped arm 10. One end of the arc-shaped arm 10 is vertically provided with a rotating rod 8. The rotating rod 8 is rotatably installed in a support 9. There are at least two supports 9, which can effectively support the rotating rod 8 and connect the support 9 to the side of the mixing chamber 1, so that the rotating rod 8 can be fixed at the side of the mixing chamber 1. The top of the rotating rod 8 is provided with a swing arm 6. The swing arm 6 is provided to increase the lever arm of rotating the rotating rod 8, and a handle is provided at the end of the swing arm 6. By holding the handle, the rotating rod 8 can be rotated. That is, rotating the swing arm 6 can drive the rotating rod 8 to rotate in the support 9, so that the rotating rod 8 drives the valve plate 11 to be placed in the discharge port 12 for sealing. At this time, the valve plate 11 can seal the discharge port 12. Of course, rotating the swing arm 6 can drive the valve plate 11 to move out of the discharge port 12, so that the concrete in the mixing chamber 1 can be discharged out through the discharge port 12.

[0035] In order to keep the valve plate 11 stable when placed inside the discharge port 12, such as Figure 1 As shown, a connecting seat 7 corresponding to the swing arm 6 is provided on the mixing chamber 1 above the discharge port 12. When the valve plate 11 is placed in the discharge port 12, the swing arm 6 is placed at the connecting seat 7. Both the swing arm 6 and the connecting seat 7 are provided with insertion holes. The two insertion holes are fixed by a pin. The pin is L-shaped or T-shaped. When the pin connects the swing arm 6 and the connecting seat 7, the position of the valve plate 11 can be fixed.

[0036] Furthermore, in order to further improve the mixing effect of the mixing device, a first shovel plate 28 is provided on one side of the mixing device. The first shovel plate 28 is connected to the transmission housing 3 through the second support arm 24. A second shovel plate 30 is provided on the other side of the mixing device. The second shovel plate 30 is connected to the transmission housing 3 through the first support arm 5.

[0037] The first shovel plate 28 and the second shovel plate 30 each form an angle with the bottom of the mixing chamber 1, with the angle being approximately 15-45°. The first shovel plate 28 and the second shovel plate 30 are arranged in a "V" shape, with the mixing device located in the middle of the "V" shape. It should be noted that... Figure 7As shown, within the three dashed boxes, the side of the first shovel 28 is tangent to the side of the support cylinder 26, and the side of the second shovel 30 is tangent to the inner wall of the mixing chamber 1. In this way, when the first shovel 28 and the second shovel 30 rotate, they can remove the concrete adhering to the support cylinder 26 and the side wall of the mixing chamber 1. Since the mixing shaft 29 is located between the first shovel 28 and the second shovel 30, when the first shovel 28 and the second shovel 30 rotate with the transmission housing 3, the first shovel 28 and the second shovel 30 will gather the concrete to the mixing shaft 29, allowing the rotating mixing shaft 29 to fully mix the flowing concrete.

[0038] This utility model also proposes a premixing device, which is a stirring blade 27. In practice, it involves improvements to the stirring blade 27, such as... Figure 6 As shown, at least one spiral bend 21 is provided on the mixing blade 27. The spiral bend 21 is necessary for mixing the concrete flowing between the first shovel plate 28 and the second shovel plate 30, because when the spiral bend 21 comes into contact with the concrete, the concrete can flow along the spiral bend 21, thereby increasing the degree of tumbling of the concrete.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A concrete additive mixing device, comprising a mixing chamber (1), a valve provided at the bottom of one side of the mixing chamber (1), and a plurality of support legs (17) provided at the bottom of the mixing chamber (1), characterized in that, The top of the mixing chamber (1) is provided with a support frame (2), and the middle of the support frame (2) is provided with an installation shaft (25) coaxial with the mixing chamber (1). A drive shaft (20) is coaxially mounted inside the mixing chamber (1). The bottom of the drive shaft (20) is connected to the drive device, and the top of the drive shaft (20) is coaxially connected to the transmission housing (3). The top of the transmission housing (3) is sealed by the end cover (4). The mounting shaft (25) passes through the end cover (4) and extends into the transmission housing (3). The mounting shaft (25) is rotatably connected to the end cover (4). Multiple stirring shafts (29) are arranged parallel to each other around the drive shaft (20). The top of the stirring shafts (29) extends into the transmission housing (3) and the two are rotatably connected. The top of the stirring shafts (29) is connected to the mounting shaft (25) through a transmission mechanism; and, A stirring blade (27) is provided on the side of the stirring shaft (29).

2. The concrete additive mixing device as described in claim 1, characterized in that, The stirring blade (27) is parallel to the stirring shaft (29), and the stirring blade (27) and the stirring shaft (29) are connected by a support rod.

3. The concrete additive mixing device as described in claim 1, characterized in that, The transmission mechanism includes multiple transmission rods (31) whose positions correspond to the stirring shaft (29), and the transmission rods (31) are radially arranged with the stirring shaft (29) and the drive shaft (20), respectively; Each stirring shaft (29) is rotatably mounted with a bearing housing (22), which is located inside the transmission housing (3); Both ends of the transmission rod (31), the lower part of the mounting shaft (25) and the top of the stirring shaft (29) are provided with bevel gears (23), and adjacent bevel gears (23) mesh with each other.

4. The concrete additive mixing device as described in claim 1, characterized in that, The drive shaft (20) is coaxially placed in the support cylinder (26), and the two ends of the support cylinder (26) are rotatably connected to the drive shaft (20). The bottom of the support cylinder (26) is coaxially fixed with the mixing chamber (1).

5. The concrete additive mixing device as described in claim 4, characterized in that, The drive unit includes a reducer (18) connected to the bottom of the drive shaft (20), the reducer (18) is mounted on a fixed bracket (14), and the fixed bracket (14) is connected to the support leg (17); A drive motor (16) is provided on one side of the reducer (18). The drive motor (16) is mounted on the support leg (17) through the motor bracket (15). The output shaft of the drive motor (16) and the input shaft of the reducer (18) are respectively provided with pulleys, which are connected by a belt.

6. The concrete additive mixing device as described in claim 1, characterized in that, The valve includes a discharge port (12) located on one side of the bottom of the mixing chamber (1), and a guide chute (13) located below the discharge port (12). The guide chute (13) is installed below the mixing chamber (1). The discharge port (12) is sealed by the valve plate (11). The side of the valve plate (11) away from the discharge port (12) is connected to the arc arm (10). One end of the arc arm (10) is vertically provided with a rotating rod (8). The rotating rod (8) is rotatably installed in the support (9). The support (9) is connected to the side of the mixing chamber (1). The top of the rotating rod (8) is provided with a swing arm (6). Rotating the swing arm (6) can drive the rotating rod (8) to rotate in the support (9), so that the rotating rod (8) drives the valve plate (11) to be placed in the discharge port (12) for sealing. The mixing chamber (1) above the discharge port (12) is provided with a connecting seat (7) corresponding to the swing arm (6). When the valve plate (11) is placed inside the discharge port (12), the swing arm (6) is placed at the connecting seat (7). When the swing arm (6) is placed at the connecting seat (7), there are insertion holes on both the swing arm (6) and the connecting seat (7). The two insertion holes are fixed by pins.

7. The concrete additive mixing device as described in claim 2, characterized in that, A first shovel plate (28) is provided on one side of the stirring device. The first shovel plate (28) is connected to the transmission housing (3) through the second support arm (24). A second shovel plate (30) is provided on the other side of the stirring device. The second shovel plate (30) is connected to the transmission housing (3) through the first support arm (5). The first shovel plate (28) and the second shovel plate (30) each have a certain angle with the bottom of the mixing chamber (1). The first shovel plate (28) and the second shovel plate (30) are distributed in a "V" shape, and the mixing device is located in the middle of the "V" shape.

8. A premixing device, characterized in that, The premixing device is the stirring blade (27) as described in any one of claims 1-7, and the stirring blade (27) is provided with at least one spiral bend (21).

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