Resin concrete dosing device

Abstract

The utility model relates to resin concrete production and processing equipment technical field discloses a kind of resin concrete ration feeding device, including chassis, storage bin and threaded conveying pipe.Storage bin top intercommunication tank, sealing ring is equipped at junction, threaded conveying pipe is connected by vertical connecting pipe at bottom, motor drives the rotation of helical blade in conveying pipe.Chassis middle section is equipped with U-shaped fixing frame, sensor is mounted on it to carry conveying pipe to measure weight in real time;Vibrating machine driven by air pump is fixed on the front side wall of storage bin;Controller is electrically connected with sensor and motor respectively.The utility model breaks arch by pneumatic vibration to raw materials, combines sensor weighing and PID closed-loop speed regulation, solves the problem that high viscosity material is easy to block, significantly improves feeding accuracy and conveying stability.

Description

Technical Field

[0001] This utility model relates to the technical field of resin concrete production and processing equipment, and in particular to a resin concrete quantitative feeding device. Background Technology

[0002] Resin concrete, as a high-performance composite material, uses synthetic resin as a binder. Due to its excellent mechanical properties and corrosion resistance, it is widely used in the manufacturing of building components, precision mechanical foundations, and other fields. In the production process of resin concrete, the accurate metering and stable delivery of each component raw material are the key links to ensure the curing quality and mechanical properties of the product.

[0003] However, unlike ordinary cement concrete, resin concrete raw materials usually have high viscosity and large internal friction between materials, resulting in poor fluidity. Currently, most existing feeding equipment uses simple gravity silos with screw conveyors for feeding. In actual production operations, this traditional structure is difficult to adapt to the conveying needs of high-viscosity materials. Because the raw materials are very easy to adhere to the inner wall of the silo, and during the gravity sinking process, they are prone to mutual congestion and compression at the bottom narrowing of the silo, thus forming a stable arched structure, i.e., arching or bridging.

[0004] Once this arching phenomenon occurs, it will directly block the flow of raw materials to the downward conveying pipe, resulting in intermittent material interruption or unstable material supply during the feeding process. More importantly, existing conventional feeding devices usually only use volumetric metering by fixing the speed of the motor, lacking the ability to sense the actual material conveying status in real time. When a slight blockage occurs in the hopper, causing a decrease in the filling rate in the spiral tube, or when the material density fluctuates, the equipment cannot detect the change in conveying weight in time, nor can it automatically adjust the conveying speed to compensate. This makes it difficult to control the final feeding accuracy, seriously affecting the accuracy of the mix proportion and the finished product qualification rate of resin concrete products.

[0005] Therefore, this utility model proposes a resin concrete quantitative feeding device to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems existing in the resin concrete quantitative feeding device, such as the resin concrete raw material being prone to arching and bridging inside the silo due to its high viscosity and poor fluidity, leading to interruption of feeding, and the lack of a real-time monitoring and feedback mechanism for material weight during the conveying process, resulting in low feeding accuracy and the inability to automatically adjust the flow rate according to actual working conditions, this utility model aims to provide a resin concrete quantitative feeding device with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a resin concrete quantitative feeding device, including: a base frame, a storage silo fixedly installed on the top of the base frame, a tank fixedly installed on the top of the storage silo, a connecting pipe connected to the bottom of the storage silo, a threaded conveying pipe connected to the end of the connecting pipe away from the storage silo, and a motor fixedly installed on the top of the base frame and rotatably connected to the threaded conveying pipe; as well as a fixing frame, a sensor, a vibrator, an air pump, a controller, and a discharge port.

[0008] The sensor is mounted on the bottom of the threaded conveying pipe via a mounting bracket, and the sensing end of the sensor is supported and attached to the bottom of the middle section of the threaded conveying pipe for real-time monitoring of the weight of the conveyed material. The vibrator is fixedly installed on the front wall of the storage silo, and the air pump is fixedly installed on the front of the vibrator and pneumatically connected to the vibrator to drive the vibrator to generate high-frequency vibration to break the arching of the raw material.

[0009] Furthermore, the bottom of the threaded conveying pipe away from the motor is connected to a discharge port. The controller is fixedly installed on the side wall of the storage silo and is electrically connected to both the motor and the sensor. This allows the weight signal detected by the sensor to be fed back to the controller to adjust the motor speed, thus achieving closed-loop control.

[0010] Preferably, a valve is installed on the side wall of the discharge port. The valve includes a valve body and a control handle. The valve is configured to control the opening and closing degree of the discharge port. By manually adjusting the valve opening in conjunction with the motor speed control, more flexible flow cutoff and regulation can be achieved.

[0011] Preferably, a sealing ring is provided at the connection between the bottom of the tank and the top of the storage silo. The sealing ring is embedded circumferentially along the opening at the top of the storage silo. The sealing structure prevents leakage of high-viscosity resin concrete raw materials and prevents external air from entering and causing the raw materials to deteriorate.

[0012] Preferably, the threaded conveying pipe is provided with a spiral blade inside, the spiral blade extends along the axial direction of the threaded conveying pipe, and the output shaft of the motor passes through the end of the threaded conveying pipe and is fixedly connected to the spiral blade. The high-viscosity raw material is forcibly conveyed towards the discharge port by the rotational thrust of the spiral blade.

[0013] Preferably, the connecting pipe is vertically fixed between the storage silo and the threaded conveying pipe, and the inner diameter of the connecting pipe is designed to be greater than or equal to the diameter of the bottom opening of the storage silo. This aperture matching method can effectively reduce the resistance of the material at the junction of the material falling and prevent accumulation and blockage.

[0014] Preferably, the fixing frame has a U-shaped groove structure, the threaded conveying pipe is installed inside the U-shaped groove of the fixing frame, and the sensor is located between the bottom crossbeam of the groove of the fixing frame and the outer wall of the threaded conveying pipe. The structure not only supports the conveying pipe, but also forms a stable weighing detection range.

[0015] Preferably, the sensor is a resistance strain gauge load cell or a piezoelectric pressure sensor, used to convert the detected weight and pressure signals of the threaded conveying pipe and the internal material into electrical signals and transmit them to the controller in real time.

[0016] Preferably, the controller integrates a PID speed control module and a frequency converter. The controller is configured to receive feedback signals from sensors and calculate the deviation according to the preset feed rate using a PID algorithm, thereby dynamically adjusting the output frequency of the frequency converter to change the rotation frequency of the motor.

[0017] Preferably, the vibrator is a pneumatic turbine vibrator, and the air pump continuously provides compressed air power to the vibrator to drive the storage silo to generate high-frequency micro-amplitude vibration, thereby effectively breaking the internal friction and adhesion between materials.

[0018] Preferably, shock-absorbing pads are also provided at the four corners of the bottom of the base frame. The shock-absorbing pads are used to reduce the transmission of high-frequency mechanical vibrations generated by the motor and vibrator to the ground, and at the same time improve the overall stability of the equipment during operation.

[0019] This utility model has the following beneficial effects: 1. This utility model solves the problem that existing resin concrete raw materials are prone to arching and bridging inside the silo due to their high viscosity and poor fluidity, which leads to interruption of material feeding. It achieves the effect of using high-frequency vibration to destroy the material's adhesive force and ensure that the raw materials can continuously and smoothly enter the conveying pipe. 2. This utility model solves the problem of accurate metering and flow control of high-viscosity materials during the conveying process by setting a sensor at the bottom of the threaded conveying pipe to monitor the conveying weight in real time, and dynamically adjusting the motor speed according to the feedback signal by the PID module inside the controller. This achieves the effect of realizing closed-loop automated control and significantly improving the feeding accuracy and proportioning accuracy. 3. This utility model solves the problem of easy volatilization and leakage of resin concrete raw materials or deterioration and solidification due to prolonged contact with external air by embedding a sealing ring at the connection between the tank and the storage silo. It achieves the effects of improving the overall airtightness of the device, ensuring the stability of the raw material properties, and preventing environmental pollution. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of a resin concrete quantitative feeding device proposed in this utility model; Figure 2 This is a schematic diagram of the threaded conveying pipe of a resin concrete quantitative feeding device proposed in this utility model. Figure 3 This is a schematic diagram of the tank body of a resin concrete quantitative feeding device proposed in this utility model; Figure 4 This is a schematic diagram of the storage bin of a resin concrete quantitative feeding device proposed in this utility model.

[0021] Legend: 1. Tank body; 2. Controller; 3. Storage silo; 4. Vibrator; 5. Air pump; 6. Connecting pipe; 7. Threaded conveying pipe; 8. Fixing frame; 9. Sensor; 10. Base frame; 11. Motor; 12. Valve; 13. Discharge port; 14. Sealing ring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] Example: Please refer to Figures 1 to 4 This utility model provides a quantitative feeding device for resin concrete, which aims to solve the technical problems in the prior art where the high viscosity and poor fluidity of resin concrete raw materials easily lead to arching and material breakage in the silo, and it is difficult to perform accurate weight detection and flow control during the conveying process, resulting in uneven feeding.

[0024] like Figure 1 and Figure 2As shown, the main structure of a resin concrete quantitative feeding device includes a base frame 10, a storage silo 3, a tank body 1, a connecting pipe 6, a threaded conveying pipe 7, and a motor 11. The base frame 10 serves as the installation support foundation for the entire device. The storage silo 3 is fixedly installed on top, temporarily storing the resin concrete raw materials to be conveyed. The tank body 1 is fixedly installed on top of the storage silo 3, and its interior is interconnected with the interior of the storage silo 3, allowing for continuous replenishment of raw materials from above. The bottom of the storage silo 3 is connected to the connecting pipe 6, with the end of the connecting pipe 6 away from the storage silo 3 connected to the inlet end of the threaded conveying pipe 7. The connecting pipe 6 facilitates the conversion from vertical material drop to horizontal conveying. The motor 11 is fixedly installed on one side of the top of the base frame 10, and its output end is rotatably connected to the threaded conveying pipe 7, providing rotational power for material conveying. Based on this foundation structure, in order to... To achieve precise quantification and anti-clogging functions, the device also integrates a fixed frame 8, a sensor 9, a vibrator 4, an air pump 5, a controller 2, and a discharge port 13. The fixed frame 8 is fixedly installed at the top middle section of the base frame 10. The sensor 9 is fixedly installed on the top of the fixed frame 8. The sensing end of the sensor 9 is supported and attached to the bottom of the middle section of the threaded conveying pipe 7. This contact-type support method is used to monitor the weight of the conveyed material in real time. The vibrator 4 is fixedly installed on the front side wall of the storage silo 3. The air pump 5 is fixedly installed on the front side of the vibrator 4 and is pneumatically connected to the vibrator 4. The air pump 5 drives the vibrator 4 to generate high-frequency vibration to break the arching of the raw material. The bottom of the threaded conveying pipe 7 away from the motor 11 is connected to the discharge port 13. The controller 2 is fixedly installed on the side wall of the storage silo 3 and is electrically connected to the motor 11 and the sensor 9, thereby constructing a closed-loop control system.

[0025] To address the technical challenges of high viscosity resin concrete leading to clogging and difficulty in precisely controlling discharge, the core of this embodiment's technical solution lies in the targeted optimization design of the material storage, anti-clogging, and discharge structures. Please refer to the following for details. Figure 2 and Figure 4 In the resin concrete quantitative feeding device, the vibrator 4 is specifically selected as a pneumatic turbine vibrator. The vibrator 4 is fixedly connected to the outer wall of the front side of the storage silo 3 by bolts. The air pump 5 is fixedly installed on the front side of the vibrator 4 and is pneumatically connected to the vibrator 4 through an air pipe. When the air pump 5 is working, it continuously provides high-pressure compressed air power to the vibrator 4, driving the storage silo 3 to generate high-frequency micro-amplitude vibration. The vibration is directly transmitted to the inner wall of the storage silo 3 to destroy the bonding force between the resin concrete raw material particles and the possible arching effect, forcing the raw material to continuously and evenly slide down into the connecting pipe 6 under the action of gravity. At the same time, the connecting pipe 6 is fixedly connected vertically between the bottom opening of the storage silo 3 and the feed port of the threaded conveying pipe 7. The inner diameter of the connecting pipe 6 is designed to be greater than or equal to the bottom opening diameter of the storage silo 3. This expansion or equal diameter design effectively avoids material accumulation or bridging at the narrowing point, further ensuring the smooth flow of material.

[0026] Regarding the sealing and connection structure, a sealing ring 14 is provided at the connection between the bottom of the tank body 1 and the top of the storage silo 3. The sealing ring 14 is embedded circumferentially between the contact surfaces of the two along the top opening of the storage silo 3. A tight seal is achieved by the flange or bolts between the tank body 1 and the storage silo 3, which effectively prevents the leakage of volatile components in the resin concrete raw materials from polluting the environment or the intrusion of external moisture leading to deterioration of the raw materials. For the end discharge control, the bottom of the threaded conveying pipe 7 away from the motor 11 is connected to the discharge port 13. The discharge port 13 extends vertically downward to utilize gravity for discharge. A valve 12 is installed on the side wall of the discharge port 13. The specific structure of the valve 12 includes a valve body and a control handle. The valve 12 is configured to linearly adjust the opening and closing degree of the discharge port 13. In the non-working state, the valve 12 can completely close the discharge port 13 to prevent residual material from dripping in the pipeline, or during the equipment commissioning stage, the opening degree of the valve 12 can be adjusted to assist in controlling the discharge flow resistance, and a wider range of flow control can be achieved in conjunction with the speed adjustment of the motor 11.

[0027] In a preferred embodiment, in order to achieve forced conveying of high-viscosity resin concrete raw materials, a spiral blade is provided inside the threaded conveying pipe 7. The spiral blade extends along the axial direction of the threaded conveying pipe 7 and fills the inner cavity of the pipe. The output shaft of the motor 11 passes through the end cap of the feed end of the threaded conveying pipe 7 and is fixedly connected to the axis of the spiral blade located inside. When the motor 11 rotates, it drives the spiral blade to rotate synchronously. The spiral surface thrust is used to continuously squeeze and push the raw materials falling into the pipe towards the discharge port 13.

[0028] As another preferred embodiment, in order to construct a stable and highly sensitive weighing structure, the fixing frame 8 is designed as a U-shaped groove structure, and the threaded conveying pipe 7 is installed inside the U-shaped groove with the top opening of the fixing frame 8. The sensor 9 is installed between the upper surface of the bottom crossbeam of the groove of the fixing frame 8 and the lower surface of the outer wall of the threaded conveying pipe 7, so that the threaded conveying pipe 7, as the measured carrier, is directly pressed on the sensing end of the sensor 9. The sensor 9 is specifically selected as a resistance strain gauge weighing sensor or a piezoelectric pressure sensor. The sensor 9 can convert the detected weight pressure signal into an analog electrical signal and transmit it to the controller 2 in real time through the signal line.

[0029] In another preferred embodiment, in order to achieve automated closed-loop control of the feeding speed, the internal circuit board of the controller 2 integrates a PID speed regulation module and a frequency converter. The controller 2 is configured to continuously receive feedback signals from the sensor 9, and use the PID speed regulation module to compare the difference between the actual flow rate and the preset feeding amount, calculate the compensation control amount, and then instruct the frequency converter to adjust the power frequency output to the motor 11, thereby changing the rotation frequency and speed of the motor 11, and realizing dynamic adjustment of the feeding speed.

[0030] In addition, considering the impact of vibration on equipment stability, shock-absorbing pads are installed at the four corners of the bottom of the base frame 10. The shock-absorbing pads are made of wear-resistant rubber or polyurethane elastic material. The upper end of the shock-absorbing pads is fixedly connected to the bottom of the base frame 10, and the lower end contacts the ground. The elastic damping characteristics are used to buffer and absorb the high-frequency mechanical vibration generated when the motor 11 and the vibrator 4 are working, reduce the transmission of vibration to the ground and reduce the noise of equipment operation.

[0031] Working principle: When quantitative feeding of resin concrete is required, the raw material is put into the storage silo 3 through the top of the tank 1. During this process, the sealing ring 14 ensures the airtightness of the connection between the storage silo 3 and the tank 1, preventing the intrusion of external air and the deterioration of the raw material. The operator issues a start command through the controller 2, and the air pump 5 starts working and outputs compressed air to the vibrator 4, driving the vibrator 4 to drive the storage silo 3 to generate high-frequency vibration, effectively destroying the arching or bridging phenomenon that may form in the high viscosity resin concrete in the silo, and promoting the raw material to pass smoothly through the connecting pipe 6 and enter the lower threaded conveying pipe 7 under the action of gravity. At the same time, the motor 11 drives the spiral blades inside the threaded conveying pipe 7 to start rotating, pushing the raw material falling into the pipe axially towards the discharge port 13. During the conveying process, since the threaded conveying pipe 7 is installed in the U-shaped groove of the fixed frame 8 and directly presses on the sensing end of the sensor 9, the sensor 9 monitors the overall weight change of the threaded conveying pipe 7 and the internal flowing material in real time, and converts the detected pressure signal into an electrical signal to feed back to the controller 2 in real time. The PID speed regulation module inside the controller 2 compares and calculates the feedback signal with the preset target feed rate, and automatically adjusts the output frequency of the frequency converter to change the speed of the motor 11, thereby dynamically correcting and precisely controlling the raw material conveying flow rate. Finally, the quantitatively conveyed raw material reaches the end of the threaded conveying pipe 7. The discharge port 13 is opened by adjusting the valve 12, and the raw material is evenly discharged under the action of screw thrust and gravity. The shock-absorbing pads at the bottom of the base frame 10 absorb the mechanical vibration energy generated by the motor 11 and the vibrator 4 throughout the process, maintaining the stable operation of the device.

Claims

1. A resin concrete quantitative feeding device, comprising a base frame (10), a storage bin (3), a tank body (1), a connecting pipe (6), a threaded conveying pipe (7), and a motor (11), wherein the storage bin (3) is fixedly installed on the top of the base frame (10), the tank body (1) is fixedly installed on the top of the storage bin (3) and communicates with the interior of the storage bin (3), the bottom of the storage bin (3) is connected to the connecting pipe (6), one end of the connecting pipe (6) away from the storage bin (3) is connected to the feed end of the threaded conveying pipe (7), and the motor (11) is fixedly installed on one side of the top of the base frame (10), and the output end of the motor (11) is rotatably connected to the threaded conveying pipe (7); Its features are, It also includes a fixed frame (8), a sensor (9), a vibrator (4), an air pump (5), a controller (2), and a discharge port (13). The fixed frame (8) is fixedly installed on the top middle section of the base frame (10). The sensor (9) is fixedly installed on the top of the fixed frame (8), and the sensing end of the sensor (9) is supported and attached to the bottom of the middle section of the threaded conveying pipe (7) to monitor the weight of the conveyed material in real time. The vibrator (4) is fixedly installed on the front side wall of the storage bin (3). The air pump (5) is fixedly installed on the front side of the vibrator (4) and pneumatically connected to the vibrator (4). The bottom of the threaded conveying pipe (7) away from the motor (11) is connected to the discharge port (13). The controller (2) is fixedly installed on the side wall of the storage bin (3), and the controller (2) is electrically connected to the motor (11) and the sensor (9) respectively.

2. The resin concrete quantitative feeding device according to claim 1, characterized in that, A valve (12) is installed on the side wall of the discharge port (13). The valve (12) includes a valve body and a control handle. The valve (12) is configured to control the opening and closing degree of the discharge port (13).

3. The resin concrete quantitative feeding device according to claim 1, characterized in that, A sealing ring (14) is provided at the connection between the bottom of the tank (1) and the top of the storage silo (3). The sealing ring (14) is embedded in the circumference of the top opening of the storage silo (3) to prevent the resin concrete raw material from leaking.

4. The resin concrete quantitative feeding device according to claim 1, characterized in that, The threaded conveying pipe (7) is provided with a helical blade inside. The helical blade extends along the axial direction of the threaded conveying pipe (7), and the output shaft of the motor (11) passes through the end of the threaded conveying pipe (7) and is fixedly connected to the helical blade.

5. A resin concrete quantitative feeding device according to claim 1, characterized in that, The connecting pipe (6) is fixedly connected vertically between the storage bin (3) and the threaded conveying pipe (7). The inner diameter of the connecting pipe (6) is greater than or equal to the diameter of the opening at the bottom of the storage bin (3) to ensure that the raw materials fall smoothly.

6. The resin concrete quantitative feeding device according to claim 1, characterized in that, The fixed frame (8) has a U-shaped groove structure. The threaded conveying pipe (7) is installed inside the U-shaped groove of the fixed frame (8), and the sensor (9) is located between the bottom crossbeam of the groove of the fixed frame (8) and the outer wall of the threaded conveying pipe (7).

7. A resin concrete quantitative feeding device according to claim 1, characterized in that, The sensor (9) is a resistance strain gauge weighing sensor or a piezoelectric pressure sensor. The sensor (9) is used to convert the detected weight signal into an electrical signal and transmit it to the controller (2).

8. A resin concrete quantitative feeding device according to claim 1, characterized in that, The controller (2) integrates a PID speed control module and a frequency converter. The controller (2) is configured to receive the feedback signal from the sensor (9) and adjust the rotation frequency of the motor (11) according to the preset feed amount.

9. A resin concrete quantitative feeding device according to claim 1, characterized in that, The vibrator (4) is a pneumatic turbine vibrator, and the air pump (5) provides compressed air power to the vibrator (4) to drive the storage bin (3) to generate high-frequency vibration.

10. A resin concrete quantitative feeding device according to claim 1, characterized in that, Shock-absorbing pads are also provided at the four corners of the bottom of the base frame (10). The shock-absorbing pads are used to reduce the transmission of vibrations generated by the motor (11) and the vibrator (4) to the ground during operation.

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