Intelligent powder conveying system

Abstract

The technical scheme of the utility model discloses an intelligent powder conveying system which comprises a mounting bracket, a stock bin, a weighing bin body and a discharging pipe orifice which are connected with one another, and further comprises a radar material level detector, a flow-aiding gasification plate, a three-position two-way electromagnetic valve, a three-point weighing sensor, a rotary feeding device and a positive-pressure Roots blower. The flow-aiding gasification plate is arranged at the bottom of the powder storage bin, an isolation gas film is formed on the inner surface of the bin bottom through the structural meshes, and therefore the flow-aiding anti-blocking function is achieved. According to the powder feeding device, powder can be fed quantitatively in batches, the excessive weighing bin is arranged, repeated zero clearing and accumulative calculation are conducted in the multiple feeding processes, and the single-time conveying amount is constant. According to the utility model, the rotary feeding device is used for feeding powder to a target use point, the rotary feeding device adopts frequency conversion control, and is matched with the real-time weight reduction rate fed back by the weighing sensor to dynamically adjust the frequency conversion rotary feeding speed so as to realize uniform receiving of the target point and eliminate the fluctuation state of powder conveying.

Description

Technical Field

[0001] This utility model relates to the field of material conveying technology, and in particular to an intelligent powder conveying system. Background Technology

[0002] In modern industrial production processes, there is an urgent need for efficient and continuous material transport. Traditional material transport methods, such as gravity conveying and belt conveying, suffer from problems such as low conveying efficiency, easy material blockage, and limited conveying distance in certain scenarios. The main drawbacks are as follows:

[0003] 1. Existing technology uses mechanical level gauges, which cannot monitor the material status of the silo in real time.

[0004] 2. Existing technology uses an integrated silo tank with a vibratory hammer or air hammer, which results in high noise and cannot effectively assist flow.

[0005] 3. Existing technologies use screw conveyors and single-point weighing systems, but the PID control lacks historical zeroing and correction functions.

[0006] 4. Existing technology uses a fixed-frequency screw conveyor, therefore the real-time conveying volume cannot be adjusted.

[0007] 5. Existing technology uses a fixed-frequency Roots blower with a manual breathing adjustment port, which makes it prone to material blockage and causes deviations in conveying volume at multiple locations. Utility Model Content

[0008] This invention addresses the aforementioned shortcomings and defects of existing technologies by employing an intelligent control logic system to achieve intelligent powder storage monitoring, intelligent pneumatic material delivery, intelligent quantitative weighing and conveying, intelligent variable frequency rotary feeding, and intelligent variable frequency positive pressure conveying. It combines traditional feeding mechanisms with intelligent sensors to achieve integrated intelligent terminal system control for quantity-based feeding, on-demand material delivery, and scheduled material inspection.

[0009] To solve the above-mentioned technical problems, this utility model provides an intelligent powder conveying system, including a mounting bracket, a hopper, a weighing chamber, and a discharge port. The hopper and the weighing chamber are connected and communicate with each other, and the discharge port is connected and communicates with the bottom of the weighing chamber, both of which are fixed in the mounting bracket; wherein, it further includes:

[0010] A radar level detector is installed above the top window of the silo to monitor the material condition inside the silo through the window.

[0011] A flow-aiding gasification plate is installed at the bottom of the silo and has a finely distributed structural mesh.

[0012] A three-position two-way solenoid valve is connected between the silo and the weighing chamber to control the flow of air and allow the material to enter the weighing chamber.

[0013] A three-point load cell is connected to the weighing chamber and is used to weigh the weighing chamber and the material entering the weighing chamber together.

[0014] A rotary feeder is connected between the weighing hopper and the discharge port; and

[0015] A positive pressure Roots blower, connected to the discharge port, is used to blow the material delivered to the discharge port toward the target conveying point; wherein...

[0016] The radar level detector, the three-position two-way solenoid valve, the three-point weighing sensor, the rotary feeder, and the positive pressure Roots blower are all electrically connected to the PLC controller.

[0017] Optionally, it also includes a mounting base connected to the lower interior of the mounting bracket for connecting the three-point weighing sensor.

[0018] Optionally, the weighing chamber is suspended relative to the three-point weighing sensor.

[0019] Optionally, the radar level detector is located directly above the viewing window.

[0020] Optionally, a glass plate is installed at the viewing window.

[0021] Optionally, the flow-aiding gasification plate is attached to the bottom of the silo and forms an air-insulating film structure.

[0022] Optionally, the mesh size of the flow-aiding gasification plate is matched with the material size, allowing the material to pass through the mesh.

[0023] Optionally, the PLC controller is electrically connected to the backend controller.

[0024] Optionally, the silo is provided with a material conveying port and a material port cover.

[0025] The beneficial effects of this utility model's technical solution are:

[0026] This invention achieves the function of assisting flow and preventing blockage by setting a flow-aiding gasification plate at the bottom of the powder storage silo and using the structural mesh to form an insulating gas film on the inner surface of the silo bottom.

[0027] This invention enables batch quantitative powder feeding, features an over-weighing chamber, and repeatedly zeros and accumulates calculations during multiple feeding processes to achieve a constant single feeding volume.

[0028] This invention uses a rotary feeder to deliver powder to the target point of use. The rotary feeder is controlled by frequency conversion and, in conjunction with the real-time weight reduction rate fed by the weighing sensor, dynamically adjusts the frequency conversion rotary feeder speed to achieve uniform reception at the target point and eliminate fluctuations in powder delivery.

[0029] This invention uses a positive pressure Roots blower to transport powder over long distances. The Roots blower is controlled by frequency conversion to achieve comprehensive adjustment of the power source's conveying capacity and conveying pressure, and a single system can handle multiple target conveying points. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the intelligent powder conveying system in an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of the silo in an embodiment of this utility model.

[0032] In the attached diagram: 1. Mounting bracket, 2. Hopper, 3. Weighing bin, 4. Positive pressure Roots blower, 5. Aeration plate, 6. Three-position two-way solenoid valve, 7. Three-point load cell, 8. Fixed base, 9. Rotary feeder, 10. Discharge port, 11. Radar level detector, 21. Glass plate, 22. Material outlet cover, 51. Isolation air membrane. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 according to the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] Please see Figure 1 and Figure 2 The diagram illustrates an embodiment of an intelligent powder conveying system, comprising a mounting bracket 1, a hopper 2, a weighing chamber 3, and a discharge port 10. The hopper 2 and the weighing chamber 3 are connected and communicate with each other, and the discharge port 10 is connected and communicates with the bottom of the weighing chamber 3, both fixed within the mounting bracket 1. The system also includes a radar level detector 11, positioned above a viewing window on the top of the hopper 2, for monitoring the material level within the hopper 2; a flow-aiding aeration plate 5, located at the bottom of the hopper 2, having a finely distributed mesh structure; and a three-position two-way solenoid valve 6, connected between the hopper 2 and the weighing chamber 3. The system is used to control the flow of air through the material into the weighing hopper 3; a three-point load cell 7 is connected to the weighing hopper 3 and is used to weigh the weighing hopper 3 and the material entering the weighing hopper 3 together; a rotary feeder 9 is connected between the weighing hopper 3 and the discharge port 10; and a positive pressure Roots blower 4 is connected to the discharge port 10 and is used to blow the material transmitted to the discharge port 10 toward the target conveying point; wherein the radar level detector 11, the three-position two-way solenoid valve 6, the three-point load cell 7, the rotary feeder 9 and the positive pressure Roots blower 4 are all electrically connected to the PLC controller.

[0039] In this embodiment, a fixing base 8 is also included, which is connected to the lower interior of the mounting bracket 1 and is used to connect the three-point weighing sensor 7.

[0040] In this embodiment, the weighing chamber 3 is suspended relative to the three-point weighing sensor 7.

[0041] In this embodiment, the radar level detector 11 is located directly above the viewing window.

[0042] In this embodiment, a glass plate 21 is installed at the viewing window.

[0043] In this embodiment, the flow-aiding gasification plate 5 is closely attached to the bottom of the hopper 2 and forms an air-insulating film 51 structure.

[0044] In this embodiment, the size of the structural mesh of the flow-aiding gasification plate 5 matches the size of the material, allowing the material to pass through the structural mesh.

[0045] In this embodiment, the PLC controller is electrically connected to the background controller.

[0046] In this embodiment, the silo 2 is provided with a material conveying port and a material port cover 22.

[0047] The working principle of the intelligent powder conveying system in this embodiment is as follows:

[0048] After the material is loaded into the silo 2, the airflow controlled by the three-position two-way solenoid valve 6 blows the powder down to the weighing silo 3. The three-point weighing sensor 7 weighs the weighing silo 3 and the blown powder as a whole. The powder is then conveyed to the discharge port 10 by the rotary feeder 9. Finally, the powder in the discharge port 10 is blown to the target conveying point by the positive pressure Roots blower 4.

[0049] The following description will further illustrate the characteristics and functions of this utility model.

[0050] First, with the continuous improvement of industrial automation, the production process needs to achieve fully automated material handling to reduce errors and labor intensity caused by manual operation.

[0051] The intelligent positive pressure material conveying system has automated control functions and can be seamlessly integrated with the entire production process. Through preset programs and sensor detection, it can realize automatic material conveying, start-up, stop, and reversal operations, which greatly improves the degree of automation in production and is in line with the trend of modern industrial automation development.

[0052] Intelligent positive pressure material conveying systems, including various advanced sensors and controllers, should be widely used in conveying systems. They can detect the conveying status of materials and changes in materials within the pipeline in real time, and feed this information back to the control system so that the system can make timely adjustments and optimizations to ensure the stable operation of the conveying system.

[0053] Therefore, this embodiment proposes an intelligent powder conveying system. The disadvantages of the prior art and the advantages of this embodiment will be compared and explained below:

[0054] 1. Disadvantages of existing technology: The use of mechanical level gauges makes it impossible to monitor the material status of the silo in real time.

[0055] Advantages of this technology: It employs a radar level detector to achieve real-time monitoring of the material level in the powder storage silo. It uses an analog terminal output, configured with a system PLC output, to display the real-time material level status on the terminal touchscreen. Based on the set high and low level functions, it provides "low material alerts" and "full material warnings." The real-time measurement and observation of the material status on-site is fed back to the system for detection, and remote monitoring by the user is also possible.

[0056] 2. Disadvantages of existing technology: The use of an integrated silo tank with a vibratory hammer or air hammer results in high noise and ineffective flow assistance.

[0057] Advantages of this technology: An aeration plate is installed at the bottom of the powder storage silo. During normal powder feeding, a three-position two-way solenoid valve is used for air path control to allow dry compressed air to enter the aeration plate. The structural mesh forms an insulating air film on the inner surface of the silo bottom, thereby achieving the function of aiding flow and preventing blockage. This structure can handle all small-diameter granular materials or powders, achieving isolation between the material itself and the storage silo, avoiding contact that would cause moisture absorption or frictional resistance.

[0058] 3. Disadvantages of existing technology: The screw conveyor and single-point weighing system are used, and the PID control has no historical zeroing and correction functions.

[0059] Advantages of this technology: The system can deliver powder in batches and in quantitative quantities. It is equipped with an over-weighing chamber and uses a three-point weighing sensor to measure the structure of the chamber together with the powder, outputting the effective weight of the powder in a single delivery. The system repeatedly resets and accumulates the weight during multiple deliveries to achieve a constant single delivery volume. It also uses iterative program optimization control to minimize the difference between the target delivery volume and the actual delivery volume.

[0060] 4. Disadvantages of existing technology: The use of fixed-frequency screw conveyors makes it impossible to adjust the real-time conveying volume.

[0061] Advantages of this technology: It uses a rotary feeder to deliver powder to the target point of use. The rotary feeder is controlled by frequency conversion and dynamically adjusts the frequency conversion rotary feeder speed in conjunction with the real-time weight reduction rate feedback from the weighing sensor. This maintains the uniformity of feeding throughout the process, reduces the risk of blockage caused by large initial feed volume due to powder accumulation, and ensures uniform feeding, achieving uniform reception at the target point and eliminating fluctuations in powder conveying.

[0062] 5. Disadvantages of existing technology: The use of a fixed-frequency Roots blower with a manual breathing adjustment port can easily lead to material blockage, and the conveying volume at multiple locations can easily deviate.

[0063] Advantages of this technology: It uses a positive pressure Roots blower to transport powder materials over long distances. The Roots blower adopts frequency conversion control to realize comprehensive adjustment of the power source conveying volume and conveying pressure. A single system can handle multiple target conveying points. During the initial commissioning, the optimal conveying frequency is recorded to form a fixed blower frequency operation status table, so as to achieve accurate conveying of complex systems according to quantity and distance.

[0064] In summary, this utility model achieves the function of assisting flow and preventing blockage by setting a flow-aiding gasification plate at the bottom of the powder storage silo and using the structural mesh to form an insulating gas film on the inner surface of the silo bottom.

[0065] This invention enables batch quantitative powder feeding, features an over-weighing chamber, and repeatedly zeros and accumulates calculations during multiple feeding processes to achieve a constant single feeding volume.

[0066] This invention uses a rotary feeder to deliver powder to the target point of use. The rotary feeder is controlled by frequency conversion and, in conjunction with the real-time weight reduction rate fed by the weighing sensor, dynamically adjusts the frequency conversion rotary feeder speed to achieve uniform reception at the target point and eliminate fluctuations in powder delivery.

[0067] This invention uses a positive pressure Roots blower to transport powder over long distances. The Roots blower is controlled by frequency conversion to achieve comprehensive adjustment of the power source's conveying capacity and conveying pressure, and a single system can handle multiple target conveying points.

[0068] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A powder intelligent conveying system, comprising a mounting bracket, a hopper, a weighing chamber, and a discharge port, wherein the hopper and the weighing chamber are connected and communicate with each other, and the discharge port is connected and communicates with the bottom of the weighing chamber, and both are fixed in the mounting bracket; characterized in that, Also includes: A radar level detector is installed above the top window of the silo to monitor the material condition inside the silo through the window. A flow-aiding gasification plate is installed at the bottom of the silo and has a finely distributed structural mesh. A three-position two-way solenoid valve is connected between the silo and the weighing chamber to control the flow of air and allow the material to enter the weighing chamber. A three-point load cell is connected to the weighing chamber and is used to weigh the weighing chamber and the material entering the weighing chamber together. A rotary feeder is connected between the weighing hopper and the discharge port; and A positive pressure Roots blower, connected to the discharge port, is used to blow the material delivered to the discharge port toward the target conveying point; wherein... The radar level detector, the three-position two-way solenoid valve, the three-point weighing sensor, the rotary feeder, and the positive pressure Roots blower are all electrically connected to the PLC controller.

2. The intelligent powder conveying system according to claim 1, characterized in that, It also includes a mounting base connected to the lower interior of the mounting bracket for connecting the three-point weighing sensor.

3. The intelligent powder conveying system according to claim 2, characterized in that, The weighing chamber is suspended relative to the three-point weighing sensor.

4. The intelligent powder conveying system according to claim 3, characterized in that, The radar level detector is located directly above the viewing window.

5. The intelligent powder conveying system according to claim 4, characterized in that, A glass plate is installed at the viewing window.

6. The intelligent powder conveying system according to claim 5, characterized in that, The flow-aiding gasification plate is attached to the bottom of the silo and forms an air-insulating film structure.

7. The intelligent powder conveying system according to claim 6, characterized in that, The mesh size of the flow-aiding gasification plate matches the size of the material, allowing the material to pass through the mesh.

8. The intelligent powder conveying system according to claim 7, characterized in that, The PLC controller is electrically connected to the backend controller.

9. The intelligent powder conveying system according to claim 8, characterized in that, The silo is equipped with a material conveying port and a material port cover.

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