Automatic injection device for concrete expanding agent

Abstract

The utility model provides an automatic injection device for concrete expanding agent, including, concrete expanding agent measuring hopper body is equipped with concrete expanding agent feed port and pressure relief device, concrete expanding agent conveying device is equipped with concrete expanding agent measuring hopper body lower part, and concrete expanding agent conveying device in conveying motor is equipped with conveying motor encoder, the outlet of concrete expanding agent conveying device's conveying pipeline is connected concrete mixing device, concrete expanding agent measuring hopper body top is equipped with pressure relief bag and concrete expanding agent feed port, vibration motor is equipped on concrete expanding agent measuring hopper body, vibration motor is equipped with vibration motor encoder, vibration motor encoder and conveying motor encoder are all connected with the concrete expanding agent measuring hopper body on the concrete expanding agent weighing assembly link. The utility model discloses an automatic injection device for concrete expanding agent can real -time accurately monitor and adjust the adding amount of concrete expanding agent to guarantee the performance and quality stability of concrete.

Description

Technical Field

[0001] This utility model belongs to the technical field of expansion agents, and in particular relates to an automatic injection device for concrete expansion agents. Background Technology

[0002] In the seamless construction of ultra-long structures, concrete shrinkage and temperature changes can easily trigger cracks, seriously threatening the integrity and durability of the structure. Concrete expansion agents, as a key material, can effectively compensate for concrete shrinkage, enabling seamless construction. Adding an expansion agent to concrete causes it to expand appropriately through a hydration reaction. Under the constraint of reinforcing steel and adjacent structures, this generates a pre-compression stress of 0.3~0.5MPa within the concrete, which can counteract the tensile stress generated by concrete drying shrinkage and temperature shrinkage, preventing cracking. Simultaneously, the expansion crystals generated during the hydration of the expansion agent significantly improve the concrete's impermeability, thus achieving the goals of crack resistance and impermeability in the concrete structure.

[0003] Currently, traditional concrete expansion agent devices have poor injection accuracy, making it difficult to accurately control the amount of expansion agent used. This leads to unstable concrete performance, affecting the quality of seamless construction. Furthermore, in large-scale operation scenarios such as ultra-long structure construction, the injection process of concrete expansion agent requires a large amount of manual intervention, which is inefficient, delays the construction period, and increases costs. Utility Model Content

[0004] In view of this, the present invention aims to propose an automatic injection device for concrete expansion agent, in order to solve the problems of poor injection accuracy of traditional devices, difficulty in accurately controlling the amount of expansion agent, resulting in unstable concrete performance and affecting the quality of seamless construction. Moreover, in large-scale operation scenarios such as ultra-long structure construction, the injection process of concrete expansion agent requires a lot of manual participation, which is inefficient, delays the construction period and increases costs.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows: This utility model provides an automatic dispensing device for concrete expansion agent, comprising a concrete expansion agent metering hopper, a vibrating motor, and a concrete expansion agent conveying device. The concrete expansion agent metering hopper is provided with a concrete expansion agent inlet and a pressure relief device. The concrete expansion agent conveying device is located at the lower part of the concrete expansion agent metering hopper, and the conveying motor in the concrete expansion agent conveying device is equipped with a conveying motor encoder. The outlet of the conveying pipeline of the concrete expansion agent conveying device is connected to a concrete mixing device. The top of the concrete expansion agent metering hopper is provided with a pressure relief bag and a concrete expansion agent inlet. The vibrating motor is located on the concrete expansion agent metering hopper, and the vibrating motor encoder is provided on the vibrating motor. The vibrating motor encoder is connected to the conveying motor encoder and the concrete expansion agent weighing component on the concrete expansion agent metering hopper.

[0006] Furthermore, the concrete expansion agent metering hopper is connected to the concrete expansion agent conveying device via a hopper connecting flange. The concrete expansion agent conveying device includes a conveying pipeline, a conveying motor, and a conveying motor mounting plate. The conveying pipeline is connected to the concrete expansion agent metering hopper via the hopper connecting flange. The right side of the conveying pipeline is connected to the conveying motor mounting plate, and the conveying motor is connected to the conveying motor mounting plate. The first gear on the output shaft of the conveying motor meshes with the second gear on the spiral conveying rod. The other end of the spiral conveying rod is fixed to the conveying outlet of the conveying pipeline, and spiral blades are provided on the spiral conveying rod.

[0007] Furthermore, a concrete expansion agent weighing assembly is respectively installed on the three fixed supports of the concrete expansion agent metering hopper. The concrete expansion agent weighing assembly is equipped with a powder weighing sensor. One end of the powder weighing sensor is connected to the fixed support and the other end is connected to the U-shaped piece.

[0008] Furthermore, in the pressure relief device, the pressure relief bag is fixed to the outside of the cage and connected to the concrete expansion agent metering hopper through the pressure relief bag connecting flange.

[0009] Furthermore, vertical support frames are symmetrically welded to the bottom of the concrete expansion agent metering hopper, and a horizontal support frame is welded between the two vertical support frames.

[0010] Compared with existing technologies, the automatic injection device for concrete expansion agent described in this utility model has the following advantages: This utility model's powder weighing sensor improves the metering accuracy of concrete expansion agents, enabling real-time and precise monitoring and adjustment of the added amount, ensuring accurate measurement, and thus guaranteeing stable concrete performance and quality. Based on feedback from metering and conveying data, it coordinates the operation of the vibration motor and conveying motor, resulting in a more uniform distribution of the expansion agent during injection, improving the automatic injection effect, and achieving automatic monitoring and control of the entire injection process. This reduces manual intervention and improves production efficiency and operational convenience.

[0011] The pressure relief device in this invention can promptly discharge excess gas or pressure to maintain stable pressure inside the hopper. This helps to accurately measure the amount of concrete expansion agent entering the hopper, avoids damage to the hopper structure due to excessive pressure, extends the service life of the equipment, reduces potential safety risks caused by abnormal pressure, and ensures the safety and reliability of the entire injection process. Attached Figure Description

[0012] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0013] In the attached diagram: Figure 1 This is an isometric schematic diagram of the automatic injection device for concrete expansion agent described in an embodiment of the present invention; Figure 2 This is a front view schematic diagram of the automatic injection device for concrete expansion agent according to an embodiment of the present utility model; Figure 3 This is a schematic sectional view (AA) of the main view of the automatic injection device for concrete expansion agent described in this embodiment of the present invention. Figure 4 This is a top view schematic diagram of the automatic injection device for concrete expansion agent according to an embodiment of the present invention.

[0014] Explanation of reference numerals in the attached figures: 1. Spiral blades; 2. Conveying pipeline; 3. Conveying motor; 4. Conveying motor encoder; 5. Mixed expansion agent weighing assembly; 6. Concrete expansion agent metering hopper; 7. Vibrating motor; 8. Concrete expansion agent inlet; 9. Pressure relief bag; 10. Hopper connecting flange; 11. Conveying motor mounting plate; 12. Vertical support frame; 13. Horizontal support frame; 14. Cage; 15. Pressure relief bag connecting flange; 16. Spiral conveyor rod. Detailed Implementation

[0015] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0016] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model 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 of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] See Figures 1-4 As shown, this embodiment provides an automatic injection device for concrete expansion agent, including a concrete expansion agent metering hopper 6, a vibration motor 7, and a concrete expansion agent conveying device. The concrete expansion agent metering hopper 6 is provided with a concrete expansion agent inlet and a pressure relief device. The concrete expansion agent conveying device is located at the lower part of the concrete expansion agent metering hopper 6, and the conveying motor 3 in the concrete expansion agent conveying device is provided with a conveying motor encoder 4. The outlet of the conveying pipeline 2 of the concrete expansion agent conveying device is connected to a concrete mixing device. The top of the concrete expansion agent metering hopper 6 is provided with a pressure relief bag 9 and a concrete expansion agent inlet 8. The vibration motor 7 is located on the concrete expansion agent metering hopper 6, and the vibration motor encoder is provided on the vibration motor 7. The vibration motor encoder is connected to the conveying motor encoder 4 and the concrete expansion agent weighing component 5 on the concrete expansion agent metering hopper 6.

[0020] Specifically, in this embodiment, the concrete expansion agent metering hopper 6 is connected to the concrete expansion agent conveying device through the hopper connecting flange 10. The concrete expansion agent conveying device includes a conveying pipeline 2, a conveying motor 3, and a conveying motor mounting plate 11. The conveying pipeline 2 is connected to the concrete expansion agent metering hopper 6 through the hopper connecting flange 10. The right side of the conveying pipeline 2 is connected to the conveying motor mounting plate 11. The conveying motor 3 is connected to the conveying motor mounting plate 11. The first gear on the output shaft of the conveying motor 3 meshes with the second gear on the spiral conveying rod 16. The other end of the spiral conveying rod 16 is fixed to the conveying outlet of the conveying pipeline 2. The spiral conveying rod 16 is provided with spiral blades 1.

[0021] Specifically, in this embodiment, the concrete expansion agent metering hopper 6 is provided with three fixed supports for each expansion agent weighing component 5. The expansion agent weighing component 5 is provided with a powder weighing sensor. One end of the powder weighing sensor is connected to the fixed support and the other end is connected to the U-shaped component.

[0022] Powder weighing sensors improve the metering accuracy of concrete expansive agents, enabling real-time and precise monitoring and adjustment of the added amount to ensure accurate measurement and thus guarantee stable concrete performance and quality. Based on feedback from metering and conveying data, the sensors coordinate the operation of the vibration motor and conveyor motor, resulting in a more uniform distribution of the expansive agent during injection. This enhances the automatic injection effect of the concrete expansive agent, achieving automatic monitoring and control of the entire injection process, reducing manual intervention, and improving production efficiency and operational convenience.

[0023] Specifically, in this embodiment, in the pressure relief device, the pressure relief bag 9 is fixed to the outside of the cage 14 and connected to the concrete expansion agent metering hopper 6 through the pressure relief bag connecting flange 15.

[0024] When the concrete expansion agent enters the metering hopper, the pressure relief device can promptly release excess gas or pressure to maintain stable pressure within the hopper. This helps to accurately measure the amount of concrete expansion agent entering the hopper, avoids excessive pressure from damaging the hopper structure, extends the service life of the equipment, reduces potential safety risks caused by abnormal pressure, and ensures the safety and reliability of the entire injection process.

[0025] Specifically, in this embodiment, vertical support frames 12 are symmetrically welded to the bottom of the concrete expansion agent metering hopper 6, and a horizontal support frame 13 is welded between the two vertical support frames 12.

[0026] The above are merely preferred embodiments of the present utility model and are 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 shall be included within the protection scope of the present utility model.

Claims

1. An automatic dispensing device for concrete expansion agent, characterized in that, The device includes a concrete expansion agent metering hopper (6), a vibration motor (7), and a concrete expansion agent conveying device. The concrete expansion agent metering hopper (6) is equipped with a concrete expansion agent inlet and a pressure relief device. The concrete expansion agent conveying device is located at the lower part of the concrete expansion agent metering hopper (6), and the conveying motor (3) in the concrete expansion agent conveying device is equipped with a conveying motor encoder (4). The outlet of the conveying pipeline (2) of the concrete expansion agent conveying device is connected to a concrete mixing device. The top of the concrete expansion agent metering hopper (6) is equipped with a pressure relief bag (9) and a concrete expansion agent inlet (8). The vibration motor (7) is located on the concrete expansion agent metering hopper (6), and the vibration motor encoder is located on the vibration motor (7). The vibration motor encoder and the conveying motor encoder (4) are both connected to the concrete expansion agent weighing assembly (5) on the concrete expansion agent metering hopper (6).

2. The automatic injection device for concrete expansion agent according to claim 1, characterized in that, The concrete expansion agent metering hopper (6) is connected to the concrete expansion agent conveying device through the hopper connecting flange (10). The concrete expansion agent conveying device includes a conveying pipeline (2), a conveying motor (3), and a conveying motor mounting plate (11). The conveying pipeline (2) is connected to the concrete expansion agent metering hopper (6) through the hopper connecting flange (10). The right side of the conveying pipeline (2) is connected to the conveying motor mounting plate (11). The conveying motor (3) is connected to the conveying motor mounting plate (11). The first gear on the output shaft of the conveying motor (3) meshes with the second gear on the spiral conveying rod (16). The other end of the spiral conveying rod (16) is fixed at the conveying outlet of the conveying pipeline (2). The spiral conveying rod (16) is provided with spiral blades (1).

3. The automatic injection device for concrete expansion agent according to claim 1, characterized in that, The concrete expansion agent metering hopper (6) is provided with a concrete expansion agent weighing component (5) on each of the three fixed supports. The concrete expansion agent weighing component (5) is provided with a powder weighing sensor. One end of the powder weighing sensor is connected to the fixed support and the other end is connected to the U-shaped component.

4. The automatic injection device for concrete expansion agent according to claim 1, characterized in that, In the pressure relief device, the pressure relief bag (9) is fixed to the outside of the cage (14) and connected to the concrete expansion agent metering hopper (6) through the pressure relief bag connecting flange (15).

5. The automatic injection device for concrete expansion agent according to claim 1, characterized in that, A vertical support frame (12) is symmetrically welded to the bottom of the concrete expansion agent metering hopper (6), and a horizontal support frame (13) is welded between the two vertical support frames (12).

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