Device for detecting output state of electromagnetic pulse valve of bag type dust collector

Abstract

The invention relates to the technical field of bag type dust collectors, in particular to a bag type dust collector electromagnetic pulse valve output state detection device which comprises a fixing frame arranged on a valve cover of an electromagnetic pulse valve. The micro limit switch is mounted on the fixing frame and is positioned right opposite to the vent hole of the electromagnetic pulse valve; and the baffle plate is arranged between the micro limit switch and the vent hole. According to the output state detection device for the electromagnetic pulse valve of the bag type dust collector, by ingeniously arranging the fixing frame, the micro-motion limiting switch and the baffle structure, the action state of the electromagnetic pulse valve can be captured in real time, and the action state is converted into an electric signal to be processed by the PLC control system. According to the design, automatic detection of the working state of the electromagnetic pulse valve is achieved, monitoring data are uploaded to a DCS system in real time through seamless communication between the PLC and the DCS system, and then remote monitoring and diversified alarming are achieved. The action of the electromagnetic pulse valve can be quickly responded, and whether the working state is normal is accurately judged.

Description

Technical Field

[0001] The invention relates to the technical field of bag dust collectors, and in particular to an output state detection device for an electromagnetic pulse valve of a bag dust collector. Background Art

[0002] In the industrial production process, bag dust collectors are widely used in various industrial dust removal systems as a highly efficient air purification equipment. As a key component of bag dust collectors, the main function of electromagnetic pulse valves is to remove dust from dust bags by regularly spraying compressed air, thereby ensuring the normal operation of dust collectors. However, during the operation of electromagnetic pulse valves, due to their frequent movements and harsh working environment, various faults often occur, the most common of which is the damage of the sealing diaphragm. Once the sealing diaphragm is damaged, the electromagnetic pulse valve will not work properly, resulting in a decrease in dust removal efficiency, and may even cause more serious equipment failures.

[0003] At present, the monitoring of the working status of electromagnetic pulse valves mainly relies on manual regular inspections. This method is not only time-consuming and laborious, but also greatly affected by human factors, and it is often difficult to detect and locate faults in a timely manner. Therefore, how to realize the automatic detection of the output status of the electromagnetic pulse valve, and judge in real time whether its working status is normal, and send out alarm signals in time, has become an urgent problem to be solved in the current field of bag dust collector technology. Summary of the invention

[0004] The purpose of the present invention is to provide a bag dust collector electromagnetic pulse valve output state detection device to solve the problem that the electromagnetic pulse valve proposed in the above background technology often has various faults during operation due to its frequent operation and harsh working environment, among which the most common is the damage of the sealing diaphragm. Once the sealing diaphragm is damaged, the electromagnetic pulse valve will not work properly, resulting in a decrease in dust removal efficiency, and may even cause more serious equipment failures.

[0005] To achieve the above-mentioned object, the present invention provides a bag filter electromagnetic pulse valve output state detection device, comprising a fixing frame, which is arranged on the valve cover of the electromagnetic pulse valve;

[0006] A micro limit switch is installed on the fixing frame and is located directly opposite to the air release hole of the electromagnetic pulse valve;

[0007] The baffle is arranged between the micro-motion limit switch and the air release hole, and is used to be pushed by the released gas when the electromagnetic pulse valve is actuated, thereby triggering the micro-motion limit switch;

[0008] The action signal of the micro limit switch is introduced into the PLC control system to realize automatic detection of the working state of the electromagnetic pulse valve, and through the communication between the PLC control system and the DCS system, the data is introduced into the DCS system to realize real-time monitoring and alarm.

[0009] Preferably, a bracket mounting hole is provided on the fixing frame, and the fixing frame is detachably mounted on the valve cover by a left bolt and a right bolt.

[0010] Preferably, a micro switch mounting hole is provided on the micro limit switch, and the micro limit switch is detachably connected to the fixing frame by bolts.

[0011] Preferably, a driving rod is installed on the micro-motion limit switch, the front end of the driving rod is connected and fixed to the baffle, and a micro-switch contact is installed near the back of the driving rod of the micro-motion limit switch.

[0012] Preferably, the distance between the baffle and the vent hole is at least 20 mm. This prevents excessive pressure shock of the vent pulse during operation of the electromagnetic pulse valve from causing mechanical deformation of the micro-limit switch 4 and the baffle 1, which affects the service life. The thickness of the baffle is 1-1.5 mm to ensure its firmness, lightness and service life.

[0013] Preferably, the micro limit switch is connected with a wiring terminal, and the connection process must be insulated and isolated from the external environment. The outer end of the wiring terminal is introduced into the control cabinet terminal block through a connecting wire, and the control cabinet terminal block is connected to the intermediate relay in the control cabinet. The connection is made according to the normally open or normally closed signal required, and the intermediate relay contacts are connected to the DI channel of the PLC controller, and each electromagnetic pulse valve detection input signal is defined in the program.

[0014] Preferably, one end of the PLC control system is connected to an output terminal, and the other end is connected to an input terminal. The PLC control system is connected to the DCS system via a first communication module, and the DCS system is connected to the digital platform via a second communication module.

[0015] Preferably, the detection method of the electromagnetic pulse valve output state detection device comprises the following steps:

[0016] S1. Make and install the detection device:

[0017] Make a fixing frame for the micro limit switch to match the structure of the valve cover of the electromagnetic pulse valve body;

[0018] Connect the signal line of the micro limit switch to the control cabinet to ensure the insulation and reliability of signal transmission;

[0019] S2. Signal acquisition and processing:

[0020] In the control system, the signal output by the micro limit switch is collected. The signal is a passive BOOL quantity, representing the action state of the electromagnetic pulse valve.

[0021] A 2-second power-off delay is added to the collected signal to match the actual working time range of the electromagnetic pulse valve, which is 50-120ms, and reduce misjudgment;

[0022] S3, logical judgment and alarm control:

[0023] In the PLC control system, a logical AND operation is performed on the delayed micro-limit switch signal and the electromagnetic pulse valve control signal output by the PLC.

[0024] S4. System integration and remote monitoring:

[0025] The alarm signals and status information of the PLC control system are transmitted to the DCS system through the Modbus communication protocol to realize centralized monitoring and management of data; the OPC communication function of the DCS system is used to further upload data and alarm information to the digital platform to realize remote monitoring and diversified alarm.

[0026] Preferably, in step S3, if the PLC detects the output signal and the corresponding detection signal of the electromagnetic pulse valve at the same time within a complete working cycle of the electromagnetic pulse valve, it is judged that the electromagnetic pulse valve is operating normally; if the above conditions are not met, that is, the action signal of the micro-limit switch is not detected or the signal continues to be abnormal, it is judged that the electromagnetic pulse valve is faulty and the alarm mechanism is triggered.

[0027] Preferably, in step S1, the micro limit switch and the fixing bracket are installed directly opposite to the vent hole of the electromagnetic pulse valve, and the electromagnetic pulse valve is detachably connected using the bolts provided therein, ensuring that there is a distance between the baffle and the vent hole to avoid direct impact.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. In the bag filter electromagnetic pulse valve output state detection device, by cleverly setting the fixing frame, micro-limit switch and baffle structure, the device can capture the action state of the electromagnetic pulse valve in real time and convert it into an electrical signal for the PLC control system to process. This design not only realizes the automatic detection of the working state of the electromagnetic pulse valve, but also uploads the monitoring data to the DCS system in real time through the seamless communication between the PLC and the DCS system, thereby realizing remote monitoring and diversified alarm.

[0030] 2. The electromagnetic pulse valve output state detection device of the bag dust collector can quickly respond to the action of the electromagnetic pulse valve and accurately determine whether its working state is normal. Once an abnormality is found, the device will immediately trigger the alarm mechanism and promptly notify the maintenance personnel to handle it, thereby effectively avoiding problems such as reduced dust removal efficiency and equipment damage caused by electromagnetic pulse valve failure. In addition, the installation and debugging process of the device is simple and quick, and it can easily adapt to various types of electromagnetic pulse valves, providing a strong guarantee for the stable operation of the bag dust collector.

[0031] To sum up, the bag dust collector electromagnetic pulse valve output state detection device of the present invention has the advantages of high degree of automation, fast response speed, accurate judgment, and convenient installation. It can significantly improve the operating efficiency and reliability of the bag dust collector, reduce maintenance costs, and has broad application prospects and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the top view structure of the present invention;

[0033] Figure 2 It is a side view structural schematic diagram of the present invention;

[0034] Figure 3 It is a control flow diagram of the present invention;

[0035] Figure 4 It is a schematic diagram of the PLC control system in the present invention;

[0036] The meaning of each number in the figure is:

[0037] 1. Baffle; 2. Vent hole; 3. Fixing bracket; 4. Micro limit switch; 5. Valve cover; 6. Left nut; 7. Right nut; 8. Micro switch contact; 9. Driving rod; 10. Bracket mounting hole; 11. Micro switch mounting hole; 12. Wiring terminal; 13. Output terminal; 14. Input terminal; 15. First communication module; 16. Second communication module. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The present invention provides a bag filter electromagnetic pulse valve output state detection device, such as Figure 1-Figure 4 As shown, it includes a fixing frame 3, which is arranged on a valve cover 5 of the electromagnetic pulse valve;

[0040] The micro limit switch 4 is mounted on the fixing frame 3 and is located directly opposite to the air release hole 2 of the electromagnetic pulse valve;

[0041] The baffle 1 is arranged between the micro-motion limit switch 4 and the air release hole 2, and is used to be pushed by the released gas when the electromagnetic pulse valve is actuated, thereby triggering the micro-motion limit switch 4;

[0042] The action signal of the micro limit switch 4 is introduced into the PLC control system to realize automatic detection of the working state of the electromagnetic pulse valve, and through the communication between the PLC control system and the DCS system, the data is introduced into the DCS system to realize real-time monitoring and alarm.

[0043] In this embodiment, a bracket mounting hole 10 is opened on the fixing frame 3 , and the fixing frame 3 is detachably mounted on the valve cover 5 by means of a left bolt 6 and a right bolt 7 .

[0044] Specifically, a micro switch mounting hole 11 is provided on the micro limit switch 4, and the micro limit switch 4 is detachably connected to the fixing frame 3 by bolts.

[0045] Furthermore, a driving rod 9 is installed on the micro-motion limit switch 4 , the front end of the driving rod 9 is connected and fixed to the baffle 1 , and a micro-switch contact 8 is installed on the micro-motion limit switch 4 near the back of the driving rod 9 .

[0046] Furthermore, the distance between the baffle 1 and the vent hole 2 is at least 20 mm. This prevents excessive pressure shock of the vent pulse during operation of the electromagnetic pulse valve from causing mechanical deformation of the micro-limit switch 4 and the baffle 1, which affects the service life. The thickness of the baffle 1 is 1-1.5 mm, ensuring its firmness, lightness and service life.

[0047] Furthermore, the micro limit switch 4 is connected to a terminal 12, and the connection process must be insulated to isolate it from the external environment. The outer end of the terminal 12 is introduced into the control cabinet terminal block through a connecting wire, and the control cabinet terminal block is connected to the intermediate relay in the control cabinet. The connection is made according to the normally open or normally closed signal required, and the intermediate relay contacts are connected to the DI channel of the PLC controller, and each electromagnetic pulse valve detection input signal is defined in the program.

[0048] Furthermore, one end of the PLC control system is connected to an output terminal 13 , and the other end is connected to an input terminal 14 . The PLC control system is connected to the DCS system via a first communication module 15 , and the DCS system is connected to the digital platform via a second communication module 16 .

[0049] Through the ingenious design of the micro-limit switch 4 and the vent hole 2 of the electromagnetic pulse valve, the working state of the electromagnetic pulse valve can be detected in real time. When the electromagnetic pulse valve is actuated, the released gas pushes the baffle 1, thereby triggering the micro-limit switch 4 and generating an action signal. This signal is introduced into the PLC control system, realizing the automatic detection of the working state of the electromagnetic pulse valve.

[0050] Improve system reliability: The device adopts a mechanical triggering method, through the direct action of the baffle 1 and the micro limit switch 4, it reduces the dependence on electronic components and improves the reliability and stability of the system. At the same time, the detachable connection design between the micro limit switch 4 and the fixing frame 3 and the baffle 1 is easy to install and maintain.

[0051] Prolong service life: The reasonable spacing design between the baffle 1 and the vent hole 2 (at least 20mm) effectively avoids the impact of the vent pulse pressure on the micro limit switch 4 and the baffle 1 during the operation of the electromagnetic pulse valve, reduces the risk of mechanical deformation and damage, and thus prolongs the service life of the device.

[0052] Easy to integrate and expand: The device is connected to the control cabinet terminal block through the wiring terminal 12, and then connected to the PLC controller, realizing seamless integration with the existing control system. At the same time, the PLC control system is connected to the DCS system through the communication module, further introducing data into the digital platform, facilitating the realization of remote monitoring and alarm functions, and also providing convenience for the expansion and upgrade of the system.

[0053] Intelligent management: Through the combination with PLC control system and DCS system, intelligent management of the working status of electromagnetic pulse valve is realized. The system can judge whether the electromagnetic pulse valve is working normally according to the preset logic, and send out alarm signals in time when abnormalities occur, thus improving the operating efficiency and safety of bag dust collector.

[0054] Furthermore, the detection method of the electromagnetic pulse valve output state detection device includes the following steps:

[0055] S1. Make and install the detection device:

[0056] Make a fixing frame 3 of the micro limit switch 4, which is adapted to the structure of the valve cover 5 of the electromagnetic pulse valve body;

[0057] Connect the signal line of micro limit switch 4 to the control cabinet to ensure the insulation and reliability of signal transmission;

[0058] S2. Signal acquisition and processing:

[0059] In the control system, the signal output by the micro limit switch 4 is collected. The signal is a passive BOOL quantity, representing the action state of the electromagnetic pulse valve;

[0060] A 2-second power-off delay is added to the collected signal to match the actual working time range of the electromagnetic pulse valve, which is 50-120ms, and reduce misjudgment;

[0061] S3, logical judgment and alarm control:

[0062] In the PLC control system, a logical AND operation is performed on the delayed micro-limit switch signal and the electromagnetic pulse valve control signal output by the PLC.

[0063] S4. System integration and remote monitoring:

[0064] The alarm signals and status information of the PLC control system are transmitted to the DCS system through the Modbus communication protocol to realize centralized monitoring and management of data; the OPC communication function of the DCS system is used to further upload data and alarm information to the digital platform to realize remote monitoring and diversified alarm.

[0065] Furthermore, in step S3, if the PLC detects the output signal and the corresponding detection signal of the electromagnetic pulse valve at the same time within a complete working cycle of the electromagnetic pulse valve, it is judged that the electromagnetic pulse valve is operating normally; if the above conditions are not met, that is, the action signal of the micro-limit switch is not detected or the signal continues to be abnormal, it is judged that the electromagnetic pulse valve is faulty and the alarm mechanism is triggered.

[0066] Furthermore, in step S1, the micro limit switch 4 and the fixing bracket 3 are installed directly opposite to the vent hole 2 of the electromagnetic pulse valve, and the bolts provided by the electromagnetic pulse valve are used for detachable connection to ensure that there is a distance between the baffle 1 and the vent hole 2 to avoid direct impact.

[0067] By accurately installing the micro limit switch 4 and its fixing frame 3 directly opposite to the vent hole 2 of the electromagnetic pulse valve, and using the bolts provided by the electromagnetic pulse valve for detachable connection, the close fit between the detection device and the electromagnetic pulse valve is ensured, thereby improving the accuracy of the detection.

[0068] In the PLC control system, the delayed micro-limit switch signal is compared with the electromagnetic pulse valve control signal output by the PLC through logical AND operation, which can accurately determine the working status of the electromagnetic pulse valve. Once an abnormality is detected, the fault can be quickly located and the alarm mechanism can be triggered.

[0069] Enhanced system stability and reliability:

[0070] The design of adding a 2-second power-off delay during the signal acquisition process effectively matches the actual working time range of the electromagnetic pulse valve (50-120ms) and reduces misjudgments caused by instantaneous interference or misoperation, thereby enhancing the stability and reliability of the system.

[0071] The detachable connection design between the micro limit switch 4 and the fixing bracket 3 and the electromagnetic pulse valve facilitates installation, commissioning and maintenance, and reduces the complexity and cost of system maintenance.

[0072] Intelligent management and remote monitoring:

[0073] The alarm signals and status information of the PLC control system are transmitted to the DCS system through the Modbus communication protocol, realizing centralized monitoring and management of data. This not only improves management efficiency, but also facilitates the timely discovery and handling of potential problems.

[0074] By utilizing the OPC communication function of the DCS system, data and alarm information are further uploaded to the digital platform, realizing remote monitoring and diversified alarms. This enables managers to understand the working status of the electromagnetic pulse valve anytime and anywhere, respond to fault alarms in a timely manner, and improve emergency response speed and the overall safety of the system.

[0075] Improve detection efficiency and accuracy:

[0076] Through logical judgment and alarm control mechanism, the system can quickly and accurately detect the working status of the electromagnetic pulse valve within a complete working cycle. This real-time, online detection method greatly improves the detection efficiency and accuracy, and helps to timely discover and deal with the fault or abnormality of the electromagnetic pulse valve.

[0077] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A bag filter electromagnetic pulse valve output state detection device, characterized in that: include A fixing frame (3) is arranged on a valve cover (5) of the electromagnetic pulse valve; A micro limit switch (4) is mounted on the fixing frame (3) and is located directly opposite to the air release hole (2) of the electromagnetic pulse valve; A baffle (1) is arranged between the micro-motion limit switch (4) and the air release hole (2) and is used to be pushed by the released gas when the electromagnetic pulse valve is actuated, thereby triggering the micro-motion limit switch (4); The action signal of the micro limit switch (4) is introduced into the PLC control system.

2. The bag filter electromagnetic pulse valve output state detection device according to claim 1, characterized in that: The fixing frame (3) is provided with a bracket mounting hole (10), and the fixing frame (3) is detachably mounted on the valve cover (5) by means of a left bolt (6) and a right bolt (7).

3. The bag filter electromagnetic pulse valve output state detection device according to claim 1, characterized in that: The micro-switch (4) is provided with a micro-switch mounting hole (11), and the micro-switch (4) is detachably connected to the fixing frame (3) via bolts.

4. The bag filter electromagnetic pulse valve output state detection device according to claim 1, characterized in that: A driving rod (9) is installed on the micro-motion limit switch (4), the front end of the driving rod (9) is connected and fixed to the baffle (1), and a micro-motion switch contact (8) is installed on the micro-motion limit switch (4) near the back of the driving rod (9).

5. The bag filter electromagnetic pulse valve output state detection device according to claim 1, characterized in that: The distance between the baffle (1) and the vent hole (2) is at least 20 mm.

6. The bag filter electromagnetic pulse valve output state detection device according to claim 1, characterized in that: The micro-limit switch (4) is connected to a wiring terminal (12), and the outer end of the wiring terminal (12) is introduced into the control cabinet terminal block through a connecting wire.

7. The bag filter electromagnetic pulse valve output state detection device according to claim 1, characterized in that: One end of the PLC control system is connected to an output terminal (13), and the other end is connected to an input terminal (14). The PLC control system is connected to a DCS system via a first communication module (15), and the DCS system is connected to a digital platform via a second communication module (16).

8. The bag filter electromagnetic pulse valve output state detection device according to any one of claims 1 to 7, characterized in that: The detection method of the electromagnetic pulse valve output state detection device comprises the following steps: S1. Make and install the detection device: A fixing frame (3) of a micro-limit switch (4) is manufactured to match the structure of a valve cover (5) of an electromagnetic pulse valve body; Connect the signal line of the micro limit switch (4) to the control cabinet to ensure the insulation and reliability of signal transmission; S2. Signal acquisition and processing: In the control system, the signal output by the micro limit switch (4) is collected. The signal is a passive BOOL quantity and represents the action state of the electromagnetic pulse valve. A 2-second power-off delay is added to the collected signal to match the actual working time range of the electromagnetic pulse valve, which is 50-120ms, and reduce misjudgment; S3, logical judgment and alarm control: In the PLC control system, a logical AND operation is performed on the delayed micro-limit switch signal and the electromagnetic pulse valve control signal output by the PLC. S4. System integration and remote monitoring: The alarm signals and status information of the PLC control system are transmitted to the DCS system through the Modbus communication protocol to realize centralized monitoring and management of data; the OPC communication function of the DCS system is used to further upload data and alarm information to the digital platform to realize remote monitoring and diversified alarm.

9. The bag filter electromagnetic pulse valve output state detection device according to claim 8, characterized in that: In step S3, if the PLC detects the output signal and the corresponding detection signal of the electromagnetic pulse valve at the same time within a complete working cycle of the electromagnetic pulse valve, it is judged that the electromagnetic pulse valve is working normally; if the above conditions are not met, that is, the action signal of the micro-limit switch is not detected or the signal continues to be abnormal, it is judged that the electromagnetic pulse valve is faulty and the alarm mechanism is triggered.

10. The bag filter electromagnetic pulse valve output state detection device according to claim 8, characterized in that: In step S1, the micro limit switch (4) and the fixing bracket (3) are installed directly opposite to the vent hole (2) of the electromagnetic pulse valve, and the bolts provided with the electromagnetic pulse valve are used for detachable connection, ensuring that there is a gap between the baffle (1) and the vent hole (2) to avoid direct impact.

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