An automatic weighing and filling system

Abstract

This utility model relates to an automatic weighing and filling system, belonging to the field of filling technology. It includes a support frame, a cylinder and controller mounted on the support frame, and a material pipeline driven by the cylinder. One end of the material pipeline is connected to a feed pump, and the other end is connected to a tail gas collection device. A material return device is connected to the side of the material pipeline near the feed pump, and a nitrogen addition device is connected to the side of the material pipeline near the tail gas collection system. A regulating valve and a shut-off valve are sequentially installed on the material pipeline between the material return device and the nitrogen addition device. The feed pump, cylinder, regulating valve, shut-off valve, and nitrogen addition device are all electrically connected to the controller. A weighing device is located below the tail gas collection device, and a weighing sensor is connected to the weighing device and electrically connected to the controller and regulating valve respectively. The weighing device is used to place material containers. This utility model provides more uniform material filling, a high degree of automation, improves filling efficiency, reduces labor costs, and avoids material waste and loss.

Description

Technical Field

[0001] This utility model relates to the field of filling technology, and in particular to an automatic weighing and filling system. Background Technology

[0002] Traditional chemical material filling is done manually, which is inefficient, results in inconsistent filling weights, and can lead to leakage if the operation is not done properly. To solve this problem, an automatic weighing and filling system needs to be developed. Utility Model Content

[0003] The purpose of this invention is to provide an automatic weighing and filling system to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An automatic weighing and filling system includes a support frame, a cylinder and a controller mounted on the support frame, and a material pipeline driven by the cylinder. One end of the material pipeline is connected to a feed pump, and the other end is connected to a tail gas collection device. A material return device is connected to the side of the material pipeline near the feed pump, and a nitrogen addition device is connected to the side of the material pipeline near the tail gas collection system. A regulating valve and a shut-off valve are sequentially installed on the material pipeline between the material return device and the nitrogen addition device. The feed pump, cylinder, regulating valve, shut-off valve, and nitrogen addition device are all electrically connected to the controller. A weighing device is provided below the tail gas collection device, and a weighing sensor is electrically connected to the weighing device. The weighing sensor is electrically connected to the controller and the regulating valve, respectively. The weighing device is used to place material buckets.

[0005] Preferably, the exhaust gas collection device includes an exhaust gas hood, an exhaust gas pipe, and an exhaust gas collection system. One end of the material pipe passes through the exhaust gas hood and is fixedly connected to it. One end of the exhaust gas pipe is connected to the exhaust gas hood, and the other end is connected to the exhaust gas collection system to collect and treat the exhaust gas. When the material pipe rises and falls with the cylinder, it drives the exhaust gas hood and the exhaust gas pipe to rise and fall together.

[0006] Preferably, a proximity switch is installed at one end of the material pipeline that passes through the gas collection hood. The proximity switch is electrically connected to the controller, and sends a signal to the controller when the proximity switch approaches the material bucket.

[0007] Preferably, the material return device includes a return pipe, a return storage tank, and a return valve. One end of the return pipe is connected to the material pipe near the feed pump between the feed pump and the regulating valve, and the other end is connected to the return storage tank. The return valve is installed on the return pipe and is a solenoid valve electrically connected to the controller. It is used to allow the remaining material in the material pipe to enter the return storage tank for storage when the regulating valve and the shut-off valve are closed.

[0008] Preferably, the nitrogen supply device includes a nitrogen pipeline, a nitrogen solenoid valve, a time relay, a nitrogen storage tank, and a gas pump. The gas pump is installed at the outlet of the nitrogen storage tank. One end of the nitrogen pipeline is connected to the material pipeline between the shut-off valve and the tail gas collection device, and the other end is connected to the gas pump on the nitrogen storage tank. The nitrogen solenoid valve is installed on the nitrogen pipeline, and the time relay is installed on the nitrogen solenoid valve to control the start and stop of the nitrogen solenoid valve. The time relay, the nitrogen solenoid valve, and the gas pump are all electrically connected to the controller.

[0009] Preferably, the weighing device includes an electronic scale, and the weighing sensor is installed on the electronic scale to monitor the value of the electronic scale in real time. The flow rate of the regulating valve is controlled according to the monitoring data of the weighing sensor to prevent material from splashing out during filling. When the set value is reached, the weighing sensor sends a signal to the controller.

[0010] Preferably, the material pipe, return pipe, and nitrogen pipe are metal flexible pipes, and the exhaust pipe is a plastic flexible pipe. The metal flexible pipe and the plastic flexible pipe move up and down with the cylinder and the material pipe.

[0011] Preferably, the regulating valve is a pneumatic regulating valve, and the shut-off valve is a pneumatic shut-off valve.

[0012] Preferably, the controller is a PLC controller, used to control the coordinated start and stop of various devices and valves.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention uses a weighing sensor to detect the weight of the material container in real time. The regulating valve adjusts the flow rate according to the data to prevent material from splashing out during filling and to make the filling more uniform. The PLC controller controls the mutual coordination of the equipment and valves to start and stop, resulting in a high degree of automation, improving filling efficiency, reducing labor costs, and avoiding material waste and loss. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure Labels 1. Feed pump, 2. Material pipeline, 3. Return storage tank, 4. Return pipeline, 5. Pneumatic regulating valve, 6. Pneumatic shut-off valve, 7. Support bracket, 8. PLC controller, 9. Cylinder, 10. Nitrogen storage tank, 11. Nitrogen solenoid valve, 12. Time relay, 13. Nitrogen pipeline, 14. Tail gas collection system, 15. Tail gas pipeline, 16. Gas collection hood, 17. Proximity switch, 18. Material bucket, 19. Electronic scale, 20. Weighing sensor, 21. Return pipe valve, 22. Air pump. Detailed Implementation

[0016] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0017] like Figure 1 As shown, an automatic weighing and filling system includes a support 7, a cylinder 9 and a PLC controller 8 mounted on the support 7, and a material pipeline 2 driven by the cylinder 9. One end of the material pipeline 2 is connected to a feed pump 1, and the other end is connected to a tail gas collection device. The tail gas collection device includes a gas collection hood 16, a tail gas pipeline 15, and a tail gas collection system 14. One end of the material pipeline 2 passes through the gas collection hood 16 and is fixedly connected to it. One end of the tail gas pipeline 15 is connected to the gas collection hood 16, and the other end is connected to the tail gas collection system 14 to collect and treat the tail gas. When the material pipeline 2 rises and falls with the cylinder 9, it drives the gas collection hood 16 and the tail gas pipeline 15 to rise and fall together. A proximity switch 17 is installed at the end of the material pipeline 2 that passes through the gas collection hood 16. The proximity switch 17 is electrically connected to the PLC controller 8. When the proximity switch 17 approaches the material bucket 18, it sends a signal to the PLC controller 8 to open the feed pump 1, the pneumatic regulating valve 5, and the pneumatic shut-off valve 6.

[0018] A material return device is connected to the side of the material pipeline 2 near the feed pump 1. The material return device includes a return pipeline 4, a return storage tank 3, and a return valve 21. One end of the return pipeline 4 is connected to the material pipeline 2 near the feed pump 1 between the feed pump 1 and the pneumatic regulating valve 5, and the other end is connected to the return storage tank 3. The return valve 21 is installed on the return pipeline 4. The return valve is a solenoid valve, which is used to allow the remaining material in the material pipeline 2 to enter the return storage tank 3 for storage when the pneumatic regulating valve 5 and the pneumatic shut-off valve 6 are closed.

[0019] A nitrogen supply device is connected to the side of the material pipeline 2 near the tail gas collection system. The nitrogen supply device includes a nitrogen pipeline 13, a nitrogen solenoid valve 11, a time relay 12, a nitrogen storage tank 10, and an air pump 22. The air pump 22 is installed at the outlet of the nitrogen storage tank 10. One end of the nitrogen pipeline 13 is connected to the material pipeline 2 between the pneumatic shut-off valve 6 and the tail gas collection device, and the other end is connected to the air pump 22 on the nitrogen storage tank 10. The nitrogen solenoid valve 11 is installed on the nitrogen pipeline 13. The time relay 12 is installed on the nitrogen solenoid valve 11 to control the start and stop of the nitrogen solenoid valve 11. The time relay 12, the nitrogen solenoid valve 11, and the air pump 22 are all electrically connected to the PLC controller 8.

[0020] A pneumatic regulating valve 5 and a pneumatic shut-off valve 6 are installed sequentially on the material pipeline 2 between the material return device and the nitrogen addition device. The cylinder 9, the feed pump 1, the pneumatic regulating valve 5, the pneumatic shut-off valve 6 and the return pipe valve 21 are all electrically connected to the PLC controller 8. The PLC controller 8 is used to control the mutual coordination of the various devices and valves to start and stop.

[0021] A weighing device is installed below the exhaust gas collection device. The weighing device is equipped with a weighing sensor 20, which is electrically connected to the PLC controller 8 and the pneumatic regulating valve 5 respectively. The weighing device includes an electronic scale 19. The weighing sensor 20 is installed on the electronic scale 19 to record the value of the electronic scale 19 in real time. The pneumatic regulating valve 5 adjusts the flow rate according to the data monitored by the weighing sensor 20 to prevent material from splashing out during filling. When the set value is reached, the weighing sensor 20 sends a signal to the PLC controller 8 to control the closing of the pneumatic regulating valve 5 and the pneumatic shut-off valve 6.

[0022] The weighing device is used to place the material bucket 18. The material pipe 2, return pipe 4 and nitrogen pipe 13 are metal hoses, and the exhaust pipe 15 is a plastic hose. The metal hose and plastic hose ensure that they can be raised and lowered with the cylinder 9 and the material pipe 2.

[0023] The working principle of this utility model is as follows: The material container 18 is placed on the electronic scale 19, with the opening of the container aligned with the upper material pipe 2. The worker presses the start button on the PLC controller 8, which controls the cylinder 9 to descend, causing the material pipe 2 and its connected return pipe 4, nitrogen pipe 13, exhaust pipe 15, and gas collection hood 16 to descend as well. The end of the material pipe 2 extends into the opening of the material container 18. The proximity switch 17 detects the material container 18 and sends a signal to the PLC controller 8. The PLC controller 8 then activates the feed pump 1, pneumatic regulating valve 5, and pneumatic shut-off valve 6. Material is pumped from the material pipe 2 into the material container 18 via the feed pump 1. The weighing sensor 20 on the electronic scale 19 continuously monitors and records the scale's readings. Based on the weight data, the scale 19 sends a 4-20mA signal to the weighing sensor 20, which outputs a 4-20mA analog signal to control the material flow rate of the pneumatic regulating valve 5, preventing spillage during filling. When the set value is reached, the weighing sensor 20 sends a signal to the PLC controller 8. The PLC controller 8 controls the shut-off of the feed pump 1, the pneumatic regulating valve 5, and the pneumatic shut-off valve 6, and opens the return pipe valve 21. The remaining material in the material pipeline 2 enters the return storage tank 3 through the return pipe 4 under the action of gravity. At the same time, the PLC controller 8 opens the air pump 22, the time relay 12, and the nitrogen solenoid valve 11 according to the setting. The time relay 12 controls the nitrogen solenoid valve 11 to replenish nitrogen to the material tank 18 for 10 seconds. After the nitrogen replenishment is completed, the time relay 12 controls the shut-off of the nitrogen solenoid valve 11, and the PLC controller 8 controls the air pump 22 to shut down. The excess nitrogen in the material tank 18 enters the exhaust pipe 15 through the upper gas collection hood 16 and is collected and processed by the exhaust gas collection system 14. At the same time, the time relay 12 sends a signal to the PLC controller 8, and the PLC controller 8 controls the cylinder 9 to rise back to the initial position. One operating cycle is completed, and it waits for the next start signal.

[0024] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An automatic weighing and filling system, characterized in that: The system includes a support frame, a cylinder and controller mounted on the support frame, and a material pipeline connected to the cylinder for transmission. One end of the material pipeline is connected to a feed pump, and the other end is connected to a tail gas collection device. A material return device is connected to the side of the material pipeline near the feed pump, and a nitrogen addition device is connected to the side of the material pipeline near the tail gas collection system. A regulating valve and a shut-off valve are installed sequentially on the material pipeline between the material return device and the nitrogen addition device. The feed pump, cylinder, regulating valve, shut-off valve, and nitrogen addition device are all electrically connected to the controller. A weighing device is provided below the tail gas collection device, and a weighing sensor is electrically connected to the weighing device. The weighing sensor is electrically connected to the controller and the regulating valve, respectively. The weighing device is used to place a material bucket.

2. The automatic weighing and filling system according to claim 1, characterized in that: The exhaust gas collection device includes an exhaust gas hood, an exhaust gas pipe, and an exhaust gas collection system. One end of the material pipe passes through the exhaust gas hood and is fixedly connected to it. One end of the exhaust gas pipe is connected to the exhaust gas hood, and the other end is connected to the exhaust gas collection system to collect and process the exhaust gas. When the material pipe is raised and lowered with the cylinder, it drives the exhaust gas hood and the exhaust gas pipe to rise and fall together.

3. The automatic weighing and filling system according to claim 2, characterized in that: A proximity switch is installed at one end of the material pipeline that passes through the gas collection hood. The proximity switch is electrically connected to the controller and sends a signal to the controller when it approaches the material bucket.

4. An automatic weighing and filling system according to claim 3, characterized in that: The material reflux device includes a reflux pipe, a reflux storage tank, and a reflux valve. One end of the reflux pipe is connected to the material pipeline between the feed pump and the regulating valve, near the feed pump, and the other end is connected to the reflux storage tank. The reflux valve is installed on the reflux pipe and is a solenoid valve electrically connected to the controller. It is used to allow the remaining material in the material pipeline to enter the reflux storage tank for storage when the regulating valve and the shut-off valve are closed.

5. An automatic weighing and filling system according to claim 4, characterized in that: The nitrogen supply device includes a nitrogen pipeline, a nitrogen solenoid valve, a time relay, a nitrogen storage tank, and a gas pump. The gas pump is installed at the outlet of the nitrogen storage tank. One end of the nitrogen pipeline is connected to the material pipeline between the shut-off valve and the tail gas collection device, and the other end is connected to the gas pump on the nitrogen storage tank. The nitrogen solenoid valve is installed on the nitrogen pipeline, and the time relay is installed on the nitrogen solenoid valve to control the start and stop of the nitrogen solenoid valve. The time relay, the nitrogen solenoid valve, and the gas pump are all electrically connected to the controller.

6. An automatic weighing and filling system according to claim 5, characterized in that: The material pipeline, return pipeline, and nitrogen pipeline are metal flexible tubes, and the exhaust gas pipeline is a plastic flexible tube.

7. An automatic weighing and filling system according to claim 1, characterized in that: The weighing device includes an electronic scale, and the weighing sensor is electrically connected to the electronic scale for real-time monitoring of the scale's readings.

8. An automatic weighing and filling system according to claim 1, characterized in that: The regulating valve is a pneumatic regulating valve, and the shut-off valve is a pneumatic shut-off valve.

9. An automatic weighing and filling system according to claim 1, characterized in that: The controller is a PLC controller.

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