Feeding mechanism for filling concrete mixer

Abstract

The utility model relates to the technical field of concrete filling, in particular to a feeding mechanism for filling a concrete mixer truck. The structural layout is more reasonable, dynamic movement of concrete materials can be guaranteed in a non-filling state, and segregation and layering of the concrete materials are avoided; comprising a machine frame, a storage hopper fixedly installed on the machine frame, a conveying pipeline installed at the discharging end of the bottom of the storage hopper, a steering conveying pipe rotationally installed on the conveying pipeline, a material returning hopper installed on the machine frame and a steering driving piece, and a conveying channel is formed in the conveying pipeline and the steering conveying pipe; a spiral conveying shaft is rotationally installed in the conveying channel, a first driving motor for providing power for rotation of the spiral conveying shaft is installed on the conveying pipeline, a discharging pipe is arranged on the steering conveying pipe, and the steering driving part provides power for rotation of the steering conveying pipe. And the return hopper is used for guiding concrete materials discharged from the discharge pipe into the storage hopper.

Description

Technical Field

[0001] This utility model relates to the technical field of concrete filling, and in particular to a feeding mechanism for filling concrete mixer trucks. Background Technology

[0002] Concrete is composed of various components such as cement, water, sand (fine aggregate), gravel (coarse aggregate), and admixtures. If not thoroughly mixed, cement particles may not evenly coat the aggregate, leading to insufficient strength in localized areas; admixtures (such as water-reducing agents and retarders) may be unevenly distributed, affecting setting time and fluidity. Therefore, after production, concrete must be transported from the batching plant to the required construction site using mixer trucks; the concrete in the batching plant is then poured into the mixer trucks via a feeding mechanism.

[0003] For example, Chinese utility model patent with publication number CN215047072U discloses a concrete filling and feeding structure, which includes a bracket for fixing a storage hopper and a transition hopper set in the bracket. The transition hopper is located below the storage hopper, the discharge port of the storage hopper extends into the interior of the transition hopper, and the lower opening of the transition hopper is connected to a discharge cylinder, with the lower opening of the discharge cylinder facing downwards.

[0004] However, the above-mentioned device still has the following defects: the concrete material after production is stationary in the storage hopper, but the return time of the mixer truck is uncertain, and the concrete in the storage hopper cannot be poured into the mixer truck in time. After a period of time, the concrete material that has been stationary in the storage hopper will segregate and separate, thus affecting the quality of the concrete. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a feeding mechanism for filling concrete mixer trucks, which has a more reasonable structural layout and can ensure the dynamic movement of concrete materials even in non-filling states, thus avoiding segregation and stratification of concrete materials.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a feeding mechanism for filling concrete mixer trucks, comprising a frame, a storage hopper fixedly mounted on the frame, a conveying pipe installed at the bottom discharge end of the storage hopper, a steering conveying pipe rotatably mounted on the conveying pipe, a return hopper mounted on the frame, and a steering drive component. A conveying channel is formed within the conveying pipe and the steering conveying pipe. A screw conveying shaft is rotatably mounted within the conveying channel. A first drive motor is installed on the conveying pipe to provide power for the rotation of the screw conveying shaft. A discharge pipe is provided on the steering conveying pipe. The steering drive component is a component of the steering conveying pipe. The rotation provides power, and the return hopper is used to guide the concrete material discharged from the discharge pipe into the storage hopper; furthermore, the conveying pipe and the diverting conveying pipe are connected by a mechanical shaft seal or packing material for rotational sealing; the bottom discharge end of the storage hopper is connected to the inside of the conveying channel, and the discharge pipe is connected to the inside of the diverting conveying pipe; the concrete material is in a self-circulating flow state, the discharge pipe is located above the diverting conveying pipe, one end of the return hopper extends downward at an angle to the top of the storage hopper, and the other end of the return hopper extends upward at an angle to the bottom of the discharge end of the discharge pipe; the two ends of the spiral conveying shaft are respectively rotated and sealed to the conveying pipe and the diverting conveying pipe.

[0007] Preferably, the device further includes a conveying ball joint and an adjusting cylinder. The conveying ball joint includes an inner spherical shell installed at the discharge end of the bottom of the storage hopper and an outer spherical shell covering the outside of the inner spherical shell. The outer spherical shell is fixedly installed at the inlet port of the conveying pipe. The interior of the inner spherical shell communicates with the interior of the storage hopper, and the interior of the outer spherical shell communicates with the interior of the conveying pipe. The inner spherical shell has a communication port communicating with the interior of the outer spherical shell. One end of the adjusting cylinder is hinged to the conveying pipe, and the other end of the adjusting cylinder is hinged to the outer arm of the storage hopper. The outer spherical shell and the inner spherical shell are rotatably and sealingly connected. Further, the adjusting cylinder is preferably a telescopic hydraulic cylinder, and the hydraulic cylinder is provided with telescopic power by an external hydraulic pump station. A sealing packing ring is provided on the inner wall of the outer spherical shell, and the outer spherical shell is rotatably and sealingly connected to the inner spherical shell through the sealing packing ring.

[0008] Preferably, it also includes a water inlet pipe, which is installed at the junction of the outer spherical shell and the conveying pipe. The output end of the water inlet pipe is connected to the inside of the conveying pipe, and a first switching valve is installed on the water inlet pipe. Further, the first switching valve is preferably a shut-off valve.

[0009] Preferably, the frame is equipped with two guide supports, and the conveying pipe is located between the two guide supports.

[0010] Preferably, a second switching valve is installed at the bottom of the storage hopper, and the second switching valve is located between the storage hopper and the inner spherical shell.

[0011] Preferably, the steering drive component includes a mounting base fixedly connected to the conveying pipe, a gear ring fixedly connected to the steering conveying pipe, a gear rotatably mounted on the mounting base, and a second drive motor fixedly mounted on the mounting base. The gear ring is rotatably mounted on the mounting base, and the gear meshes with the gear ring. Further, the steering drive component may also be other equivalent components that drive the steering conveying pipe to rotate.

[0012] Compared with the prior art, this utility model provides a feeding mechanism for filling concrete mixer trucks, which has the following advantages: When filling concrete into the mixer truck, the discharge pipe is located below the steering conveyor pipe; when the mixer truck does not arrive in time, the steering drive drives the steering conveyor pipe to rotate, so that the discharge pipe is located above the steering conveyor pipe, and the discharge end of the discharge pipe is located above the return hopper. The first drive motor is started, and the first drive motor drives the screw conveyor shaft to rotate. The concrete material in the storage hopper enters the conveying channel, is conveyed to the discharge pipe via the screw conveyor shaft, and then the concrete material falls to the return hopper, which re-introduces the concrete material into the storage hopper. This achieves dynamic circulation of the concrete material; the structural layout is more reasonable, and the dynamic movement of the concrete material can be ensured even in the non-filling state, avoiding segregation and stratification of the concrete material. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the discharge pipe of this utility model located below the diverting conveyor pipe;

[0014] Figure 2 This is a top view schematic diagram of the structure of this utility model;

[0015] Figure 3 This is the utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0016] Figure 4 This is a three-dimensional structural diagram of the discharge pipe of this utility model located above the diverting conveyor pipe;

[0017] Figure 5 This is the utility model Figure 1 A magnified schematic diagram of the structure at point B in the middle;

[0018] Figure 6 This is the utility model Figure 3 A magnified schematic diagram of the structure at point C in the middle;

[0019] Figure 7 This is the utility model Figure 3 A magnified schematic diagram of the structure at point D in the middle;

[0020] The following are labels in the attached diagram: 1. Frame; 2. Storage hopper; 3. Conveying pipe; 4. Diverting conveying pipe; 5. Return hopper; 6. Screw conveyor shaft; 7. First drive motor; 8. Discharge pipe; 9. Adjusting cylinder; 10. Inner spherical shell; 11. Outer spherical shell; 12. Connecting port; 13. Water inlet pipe; 14. First switching valve; 15. Guide support; 16. Second switching valve; 17. Mounting base; 18. Gear ring; 19. Gear; 20. Second drive motor. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0022] As described in the background art, the concrete filling and feeding structure is such that the produced concrete material remains stationary in the storage hopper, but the return time of the mixer truck is uncertain, and the concrete in the storage hopper cannot be filled into the mixer truck in time. After a period of time, the concrete material that has been stationary in the storage hopper will segregate and separate, thus affecting the quality of the concrete.

[0023] To solve this technical problem, the present invention provides a feeding mechanism for filling concrete mixer trucks, which is applied to the filling of concrete into the mixer truck.

[0024] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] Example 1

[0027] Please refer to Figure 1-4A feeding mechanism for filling concrete mixer trucks includes: a frame 1, a storage hopper 2 fixedly mounted on the frame 1, a conveying pipe 3 installed at the bottom discharge end of the storage hopper 2, a steering conveying pipe 4 rotatably mounted on the conveying pipe 3, a return hopper 5 mounted on the frame 1, and a steering drive component. A conveying channel is formed within the conveying pipe 3 and the steering conveying pipe 4. A screw conveying shaft 6 is rotatably mounted within the conveying channel. A first drive motor 7 is installed on the conveying pipe 3 to provide power for the rotation of the screw conveying shaft 6. A discharge pipe 8 is provided on the steering conveying pipe 4. The steering drive component provides power for the rotation of the steering conveying pipe 4. The return hopper 5 is used to guide concrete material discharged from the discharge pipe 8 into the storage hopper 2. Further, the conveying pipe 3 and the steering conveying pipe 4 are rotatably sealed by a mechanical shaft seal or packing material. The bottom discharge end of the storage hopper 2 communicates with the interior of the conveying channel, and the discharge pipe 8 communicates with the interior of the steering conveying pipe 4. Please refer to [reference needed]. Figure 4 The concrete material is in a self-circulating flow state. The discharge pipe 8 is located above the turning conveyor pipe 4. One end of the return hopper 5 extends downward to the top of the storage hopper 2, and the other end of the return hopper 5 extends upward to the bottom of the discharge end of the discharge pipe 8. The two ends of the screw conveyor shaft 6 are respectively rotatably sealed to the conveying pipe 3 and the turning conveyor pipe 4.

[0028] For details, please refer to Figure 5-6 The steering drive includes a mounting base 17 fixedly connected to the conveying pipe 3, a gear ring 18 fixedly connected to the steering conveying pipe 4, a gear 19 rotatably mounted on the mounting base 17, and a second drive motor 20 fixedly mounted on the mounting base 17. The gear ring 18 is rotatably mounted on the mounting base 17, and the gear 19 meshes with the gear ring 18. Furthermore, the steering drive may also use other equivalent components that drive the steering conveying pipe 4 to rotate.

[0029] The feeding mechanism for filling concrete mixer trucks provided in this embodiment drives the gear 19 to rotate via the second drive motor 20, and then rotates the steering conveying pipe 4 synchronously after being driven by the gear ring 18, thus realizing the vertical adjustment of the discharge pipe 8 at the steering conveying pipe 4.

[0030] Example 2

[0031] The feeding mechanism for filling concrete mixer trucks provided in Example 1 has been further optimized. For details, please refer to... Figure 7It also includes a conveying ball joint and an adjusting cylinder 9. The conveying ball joint includes an inner ball shell 10 installed at the bottom discharge end of the storage hopper 2 and an outer ball shell 11 covering the outside of the inner ball shell 10. The outer ball shell 11 is fixedly installed at the feed port on the conveying pipe 3. The interior of the inner ball shell 10 is connected to the interior of the storage hopper 2, and the interior of the outer ball shell 11 is connected to the interior of the conveying pipe 3. The inner ball shell 10 is provided with a communication port 12 that communicates with the interior of the outer ball shell 11. One end of the adjusting cylinder 9 is hinged to the conveying pipe 3, and the other end of the adjusting cylinder 9 is hinged to the outer arm of the storage hopper 2. The outer ball shell 11 and the inner ball shell 10 are rotatably and sealingly connected. Furthermore, the adjusting cylinder 9 is preferably a telescopic hydraulic cylinder, which is provided with telescopic power by an external hydraulic pump station. A sealing packing ring is provided on the inner wall of the outer ball shell 11, and the outer ball shell 11 is rotatably and sealingly connected to the inner ball shell 10 through the sealing packing ring.

[0032] For details, please refer to Figure 7 It also includes a water inlet pipe 13, which is installed at the junction of the outer spherical shell 11 and the conveying pipe 3. The output end of the water inlet pipe 13 is connected to the inside of the conveying pipe 3. A first switching valve 14 is installed on the water inlet pipe 13. Furthermore, the first switching valve 14 is preferably a shut-off valve.

[0033] For details, please refer to Figure 1 or Figure 4 Two guide supports 15 are installed on the frame 1, and the conveying pipe 3 is located between the two guide supports 15.

[0034] For details, please refer to Figure 3 A second switching valve 16 is installed at the bottom of the storage hopper 2, and the second switching valve 16 is located between the storage hopper 2 and the inner ball shell 10; furthermore, the second switching valve 16 is preferably a butterfly valve.

[0035] The feeding mechanism provided in this embodiment for filling concrete mixer trucks has different heights for different models of mixer trucks, while the height of the discharge pipe 8 remains basically the same during concrete filling, making it difficult to meet the filling needs of multi-height mixer trucks. When the feeding mechanism is not in use, some concrete material remains at the bottom of the conveying pipe 3. If this concrete material is not completely discharged, it will solidify and block the conveying pipe 3. By adaptively adjusting the extension of the adjusting cylinder 9, the outer spherical shell 11 rotates around the inner spherical shell 10, thereby adaptively adjusting the height of the discharge end of the discharge pipe 8 to meet the concrete filling needs of multi-height mixer trucks. In the non-concrete filling state, the output end of the adjusting cylinder 9 extends, causing the conveying pipe 3 to tend towards a horizontal state or the end of the conveying pipe 3 away from the storage hopper 2 to tilt downwards, allowing the residual concrete in the conveying pipe 3 to be smoothly discharged, reducing the amount of residual concrete material in the conveying pipe 3. Connecting the water inlet pipe 13 with... With an external pressurized water source connected, opening the first switch valve 14 allows for flushing of the conveying pipe 3, the diverting conveying pipe 4, and the discharge pipe 8, further reducing concrete residue and improving the ease of cleaning the interior of these pipes. Rotating and adjusting the outer spherical shell 11 seals the connection port 12 at the inner spherical shell 10, preventing flushing water from entering the storage hopper 2. The conveying ball joint can be used as a "ball valve." The guide brace 15 limits the movement of the conveying pipe 3 vertically, preventing it from swaying horizontally. The second switch valve 16 assists in controlling the discharge of concrete material from the storage hopper 2. When a downstream component of the second switch valve 16 malfunctions or the storage hopper 2 needs immersion in water for cleaning, the second switch valve 16 is promptly closed to reduce the continuous entry of concrete material into the conveying ball joint and the conveying pipe 3, facilitating subsequent maintenance and repair; or to prevent the outflow of cleaning water from the storage hopper 2.

[0036] The feeding mechanism for filling concrete mixer trucks provided by this utility model is used as follows:

[0037] When concrete is being poured into the mixer truck, the rotating drive unit drives the steering conveyor pipe 4 to rotate, and the discharge pipe 8 is located below the steering conveyor pipe 4 (please refer to...). Figure 1 The position of the discharge pipe 8 is adjusted by adapting the extension of the output end of the adjusting cylinder 9 so that the discharge pipe 8 is exactly above the feeding port of the mixing tank on the mixer truck to be loaded, and the concrete material can be poured into the mixer truck; when the mixer truck does not arrive in time, the steering drive drives the steering conveying pipe 4 to rotate, so that the discharge pipe 8 is above the steering conveying pipe 4 (please refer to...). Figure 4The discharge end of the discharge pipe 8 is located above the return hopper 5. The first drive motor 7 is started, and the first drive motor 7 drives the screw conveyor shaft 6 to rotate. The concrete material in the storage hopper 2 enters the conveying channel and is conveyed to the discharge pipe 8 through the screw conveyor shaft 6. Then the concrete material falls to the return hopper 5, and the return hopper 5 guides the concrete material back into the storage hopper 2, so that the concrete material is dynamically circulated to prevent the concrete material from solidifying or segregating.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A feeding mechanism for filling a concrete mixer truck, characterized in that, The device includes a frame (1), a storage hopper (2) fixedly installed on the frame (1), a conveying pipe (3) installed at the bottom discharge end of the storage hopper (2), a rotatable steering conveying pipe (4) installed on the conveying pipe (3), a return hopper (5) installed on the frame (1), and a steering drive. The conveying pipe (3) and the steering conveying pipe (4) form a conveying channel. A screw conveying shaft (6) is rotatably installed in the conveying channel. A first drive motor (7) is installed on the conveying pipe (3) to provide power for the rotation of the screw conveying shaft (6). A discharge pipe (8) is provided on the steering conveying pipe (4). The steering drive provides power for the rotation of the steering conveying pipe (4). The return hopper (5) is used to guide the concrete material discharged from the discharge pipe (8) into the storage hopper (2).

2. A charging mechanism for charging a concrete mixer truck as defined in claim 1, characterized in that It also includes a conveying ball joint and an adjusting cylinder (9). The conveying ball joint includes an inner ball shell (10) installed at the bottom discharge end of the storage hopper (2) and an outer ball shell (11) covering the outside of the inner ball shell (10). The outer ball shell (11) is fixedly installed at the feed port on the conveying pipe (3). The inside of the inner ball shell (10) is connected to the inside of the storage hopper (2), and the inside of the outer ball shell (11) is connected to the inside of the conveying pipe (3). The inner ball shell (10) is provided with a communication port (12) that communicates with the inside of the outer ball shell (11). One end of the adjusting cylinder (9) is hinged to the conveying pipe (3), and the other end of the adjusting cylinder (9) is hinged to the outer arm of the storage hopper (2). The outer ball shell (11) and the inner ball shell (10) are rotatably sealed together.

3. A charging mechanism for filling a concrete mixer truck as defined in claim 2, characterized in that It also includes a water inlet pipe (13), which is installed at the junction of the outer spherical shell (11) and the conveying pipe (3). The output end of the water inlet pipe (13) is connected to the inside of the conveying pipe (3). A first switch valve (14) is installed on the water inlet pipe (13).

4. A charging mechanism for batching a concrete truck as defined in claim 1, wherein, Two guide supports (15) are installed on the frame (1), and the conveying pipe (3) is located between the two guide supports (15).

5. A charging mechanism for filling a concrete mixer truck as defined in claim 2, wherein, A second switching valve (16) is installed at the bottom of the storage hopper (2), and the second switching valve (16) is located between the storage hopper (2) and the inner spherical shell (10).

6. A charging mechanism for batching a concrete truck as defined in claim 1, wherein, The steering drive includes a mounting base (17) fixedly connected to the conveying pipe (3), a gear ring (18) fixedly connected to the steering conveying pipe (4), a gear (19) rotatably mounted on the mounting base (17), and a second drive motor (20) fixedly mounted on the mounting base (17). The gear ring (18) is rotatably mounted on the mounting base (17), the gear (19) meshes with the gear ring (18), and the second drive motor (20) provides power for the rotation of the gear (19).

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