Efficient dust collection device of filter bag dust collector

Abstract

The utility model belongs to the technical field of filter bag dust removal, and particularly relates to an efficient dust collection device of a filter bag dust collector, which comprises a cloud server, a remote monitoring terminal and a filter bag dust collection device, and the filter bag dust collection device comprises a sensor module, a controller and a network communication module; the filter bag dust collection device further comprises a device body, and the device body comprises a dust collection box, a filter bag dust collection assembly and a blowing assembly. Two ends of the dust collecting box are respectively communicated with a flue gas inlet pipe and a flue gas outlet pipe; the sensor module comprises a first pressure transmitter and a second pressure transmitter; the first pressure transmitter, the second pressure transmitter, the blowing assembly and the network communication module are all electrically connected with the controller. The first pressure transmitter detects the air pressure value of flue gas in the flue gas inlet pipe and feeds back a first air pressure detection signal to the controller; the second pressure transmitter detects the air pressure value of smoke in the smoke outlet pipe and feeds back a second air pressure detection signal to the controller, and the scheme is better in ash removal effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of filter bag dust removal, and particularly relates to a high-efficiency dust collecting device for a filter bag dust collector. Background Art

[0002] Oxygen-enriched side-blown furnaces process complex hazardous and solid waste materials with high dust content, placing stringent demands on the bag filter system at the back end of the system. Existing bag filter collectors for oxygen-enriched side-blown furnaces mostly use pulse jet cleaning, primarily utilizing a pulse controller to control the pulses of compressed air. This jetting process generates shock waves, vibrating the filter bags and causing dust to fall off.

[0003] The control of injection time is often based on empirical judgment and is relatively simple. However, in actual operation, factors such as dust concentration at the dust collector inlet, filtration air velocity, injection pressure, and filter bag differential pressure all fluctuate over time. Therefore, when timing control is used, the actual resistance of the dust collector is often different from the designed resistance.

[0004] When the actual resistance is higher than the design resistance, the air volume of the dust removal system will be reduced, which will not only affect the dust removal effect, but also affect the dust collection effect of the dust collection amount; when the actual resistance is lower than the design resistance, the dust collector will cause premature blowing and cleaning before the resistance reaches the design resistance. Too many blowing and cleaning times will not only increase the compressed air consumption, but also reduce the dust removal efficiency, affecting the life of the filter bag and corrugated diaphragm. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a high-efficiency dust collecting device for a filter bag dust collector to solve the problem that the actual resistance of the existing dust collector is often different from the designed resistance, thereby affecting the dust removal effect and dust suction effect, and reducing the dust removal efficiency, affecting the life of the filter bag and the corrugated diaphragm.

[0006] The technical solution adopted by the utility model is as follows: a high-efficiency dust collecting device of a filter bag dust collector, comprising a filter bag dust collecting device, wherein the filter bag dust collecting device comprises a sensor module, a controller and a device body;

[0007] The device body includes a dust collecting box, a filter bag dust collecting component and a blowing component;

[0008] The two ends of the dust collecting box are respectively connected with a smoke inlet pipe and a smoke outlet pipe, the filter bag dust collecting assembly is arranged in the dust collecting box, and the blowing assembly can blow the filter bag dust collecting assembly;

[0009] The sensor module includes a first pressure transmitter and a second pressure transmitter;

[0010] The first pressure transmitter, the second pressure transmitter, the blowing assembly and the network communication module are all electrically connected to the controller;

[0011] The first pressure transmitter is arranged on the smoke inlet pipe, detects the pressure value of the smoke in the smoke inlet pipe, and feeds back a first pressure detection signal to the controller;

[0012] The second pressure transmitter is arranged on the smoke outlet pipe, detects the pressure value of the smoke in the smoke outlet pipe, and feeds back a second pressure detection signal to the controller;

[0013] The controller controls the opening and closing of the blowing component according to the first air pressure detection signal and the second air pressure detection signal;

[0014] The controller sends the first air pressure detection signal and the second air pressure detection signal to the cloud server through the network communication module, and the controller and the remote monitoring terminal perform data transmission through the cloud server.

[0015] Furthermore, it also includes a cloud server, a remote monitoring terminal and a network communication module; the controller sends the first air pressure detection signal and the second air pressure detection signal to the cloud server through the network communication module, and the controller and the remote monitoring terminal transmit data through the cloud server.

[0016] Furthermore, several connected filter bag installation chambers are arranged in the dust collecting box along the left and right directions, the flue gas inlet pipe is arranged at the right end of the dust collecting box and is connected to the filter bag installation chamber, several filter bag installation chambers are provided with filter bag dust collecting assemblies, and several filter bag installation chambers are connected to the top of each of the filter bag installation chambers, and the blowing assembly is arranged in the blowing installation chamber.

[0017] Furthermore, it also includes an exhaust chamber and a lifting valve, the exhaust chamber is arranged on the rear side of the filter bag installation chamber, the exhaust chamber is located below the injection installation chamber, the smoke outlet pipe is connected to the left end of the exhaust chamber, and a vent is opened on the top of the exhaust chamber for connecting to the injection installation chamber. The lifting valve is arranged in the injection installation chamber, and the driving end of the lifting valve can abut against the vent, so that the vent is in a closed state.

[0018] Furthermore, the blowing assembly includes an air distribution pipe, a branch pipe, a blowing pipe and a blowing valve;

[0019] The air distribution pipe is fixedly arranged on the front side wall of the dust collecting box, one end of the air distribution pipe is connected with an air supply part, the air outlet of the air supply part is connected with the air inlet of the air distribution pipe, the air outlet of the air distribution pipe is connected with several branch pipes distributed in an array in the left and right directions, several of the branch pipes are provided with a spray valve, the rear ends of several of the branch pipes pass through the dust collecting box and extend into the spray installation chamber, the lower ends of the branch pipes are connected with several spray pipes distributed in an array in the front and rear directions, and the lower ends of the spray pipes face the filter bag dust collecting assembly;

[0020] The air supply component and the blowing valve are both electrically connected to a controller; the controller controls the opening and closing of the air supply component and the blowing valve according to the first air pressure detection signal and the second air pressure detection signal.

[0021] Furthermore, the sensor module also includes a third pressure transmitter, which is electrically connected to the controller. The third pressure transmitter is arranged on the air distribution pipe, detects the air pressure value of the compressed air in the air distribution pipe, and feeds back a third air pressure detection signal to the controller.

[0022] Furthermore, the filter bag dust collection assembly includes a filter bag mounting plate and a filter bag;

[0023] The filter bag mounting plate is fixedly arranged on the top of the filter bag mounting chamber, and is used to separate the filter bag mounting chamber from the injection mounting chamber. A plurality of air filter ports are opened on the filter bag mounting plate, and an array of the plurality of air filter ports is distributed on the filter bag mounting plate. A plurality of filter bags are connected to the bottom of the filter bag mounting plate, and the plurality of filter bags are arranged relative to the plurality of air filter ports. The plurality of injection pipes are arranged relative to the plurality of air filter ports, and the injection pipes are located directly above the corresponding filter bags.

[0024] Furthermore, the sensor module further includes a temperature sensor, which is electrically connected to the controller and is disposed on the smoke inlet pipe to detect the smoke temperature in the smoke inlet pipe and feed back a temperature detection signal to the controller;

[0025] The flue gas inlet pipe is also provided with a cold air valve, and the controller controls the opening and closing of the cold air valve according to the temperature detection signal.

[0026] Beneficial effects of the utility model:

[0027] The air pressure value of the flue gas in the flue gas inlet pipe is detected by the first pressure transmitter, and the first air pressure detection signal is fed back to the controller. The air pressure value of the flue gas in the flue gas outlet pipe is detected by the second pressure transmitter, and the second air pressure detection signal is fed back to the controller. If the pressure difference between the first air pressure detection signal of the flue gas inlet pipe of the dust collecting box and the second air pressure detection signal of the flue gas outlet pipe is greater than the "pressure difference cleaning start value" preset by the controller, the controller controls the start of the spray component to spray and clean the filter bag dust collection component until the real-time pressure difference value is less than the set "pressure difference cleaning stop value", the cleaning is suspended, and the controller controls the spray component to close and resume the filtering state.

[0028] This solution controls the cleaning process based on the gas pressure difference (or resistance) between the flue gas inlet and outlet pipes of the dust box, which can effectively improve the dust collection efficiency of the dust box. Through the coordinated use of the controller, network communication module and cloud server, the operation status of the dust box can be remotely monitored, saving manpower and enabling unmanned operation. When the pressure difference of the dust box increases, cleaning is performed, which can save compressed air usage and greatly extend the life of components such as diaphragms and filter bags. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0030] Figure 2 This is a partial structural diagram of the dust collection box of the present invention (first perspective, the filter bag is not shown in the figure);

[0031] Figure 3 This is a partial structural diagram of the dust collection box of the present invention (second viewing angle, the filter bag is not shown in the figure);

[0032] Figure 4 This is a schematic diagram of the partial structure of the dust collection box of the utility model (third perspective);

[0033] Figure 5 This is a logic block diagram of the utility model;

[0034] The attached drawings are marked as follows:

[0035] Filter bag dust collecting device 1, device body 11, dust collecting box 12, flue gas inlet pipe 13, flue gas outlet pipe 14, filter bag installation chamber 15, spray installation chamber 16, exhaust chamber 17, vent 18, filter bag dust collecting assembly 2, filter bag installation plate 21, filter bag 22, filter air port 23, spray assembly 3, air distribution pipe 31, branch pipe 32, spray pipe 33, spray valve 34, air compressor 35, air storage tank 36, sensor module 4, first pressure transmitter 41, second pressure transmitter 42, third pressure transmitter 43, temperature sensor 44, controller 5, lift valve 6, cylinder 61, abutment plate 62, cold air valve 7. DETAILED DESCRIPTION

[0036] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0037] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0039] Example 1:

[0040] like Figures 1 to 5 As shown, a high-efficiency dust collecting device for a filter bag dust collector includes a cloud server, a remote monitoring terminal and a filter bag dust collecting device 1, wherein the filter bag dust collecting device 1 includes a sensor module 4, a controller 5 and a network communication module;

[0041] The bag filter dust collecting device 1 also includes a device body 11, which includes a dust collecting box 12, a bag filter dust collecting assembly 2, and a blowing assembly 3. A perspective window is provided on the front side wall of the dust collecting box 12 to facilitate staff to observe whether the filter bags 22 in the dust collecting box 12 have fallen off, so that the filter bags 22 can be inspected and repaired in a timely manner. Support legs are vertically fixed to the lower portion of the outer peripheral wall of the four corner sides of the dust collecting box 12;

[0042] The two ends of the dust collecting box 12 are respectively connected to a flue gas inlet pipe 13 and a flue gas outlet pipe 14. The filter bag dust collecting assembly 2 is arranged in the dust collecting box 12. The blowing assembly 3 is arranged in the dust collecting box 12 and is located directly above the filter bag dust collecting assembly 2. The blowing end of the blowing assembly 3 is downward toward the filter bag dust collecting assembly 2.

[0043] The end of the flue gas outlet pipe away from the dust collector is connected to an induced draft fan, thereby introducing the dust-laden flue gas from the flue gas inlet pipe 13 into the dust collecting box 12. Due to the negative pressure generated by the induced draft fan, the dust is filtered and purified through the filter bag dust collecting assembly 2. The dust is attached to the outer surface of the filter bag dust collecting assembly 2 and then discharged through the flue gas outlet pipe 14.

[0044] The sensor module 4 includes a first pressure transmitter 41 and a second pressure transmitter 42;

[0045] The first pressure transmitter 41, the second pressure transmitter 42, the blowing assembly 3 and the network communication module are all electrically connected to the controller 5; the first pressure transmitter 41, the second pressure transmitter 42, the blowing assembly 3 and the network communication module are all electrically connected to the controller 5 through signal lines; ( Figure 1 (Signal lines not shown)

[0046] The first pressure transmitter 41 is provided on the smoke inlet pipe 13 to detect the pressure of the smoke in the smoke inlet pipe 13 and feed back a first pressure detection signal to the controller 5;

[0047] The second pressure transmitter 42 is provided on the flue gas outlet pipe 14 to detect the pressure of the flue gas in the flue gas outlet pipe 14 and feed back a second pressure detection signal to the controller 5. In this embodiment, the controller 5 is provided at the rear side of the dust collecting box 12.

[0048] The controller 5 controls the opening and closing of the spray assembly 3 according to the first air pressure detection signal and the second air pressure detection signal;

[0049] The controller 5 sends the first air pressure detection signal and the second air pressure detection signal to the cloud server through the network communication module, and the controller 5 and the remote monitoring terminal perform data transmission through the cloud server.

[0050] In this embodiment, controller 5 is a PLC 200smart, which serves as a system control unit to control the system program execution. The network communication module is a WiFi wireless communication module, which is used to access the Internet through a router and thereby connect to the server. In other embodiments of the present application, the network communication module also includes a mobile communication module; and the remote monitoring server is a computer.

[0051] The first pressure transmitter 41 and the second pressure transmitter 42 are both of model PMD71; the measuring range is -3 kPa to 3 kPa.

[0052] As a preferred embodiment, the dust box 12 is provided with several interconnected filter bag installation chambers 15 along the left and right directions. The lower ends of the filter bag installation chambers 15 are open and the filter bag installation chambers 15 are separated by partitions. The flue gas inlet pipe 13 is provided at the right end of the dust box 12 and is connected to the filter bag installation chambers 15. The filter bag installation chambers 15 are each provided with a corresponding filter bag dust collection assembly 2. The tops of the filter bag installation chambers 15 are each connected to a correspondingly arranged spray installation chamber 16, and the spray assembly 3 is provided in the spray installation chamber 16. In this embodiment, there are five filter bag installation chambers 15 along the left and right directions, and five spray installation chambers 16 are correspondingly provided at the tops of the five filter bag installation chambers 15. Five ash hoppers are provided at the bottom of the dust box 12 relative to the five filter bag installation chambers 15. A star-shaped discharger (not shown in the drawings) is also installed at the bottom of the ash hopper to facilitate the processing of dust in the ash hopper.

[0053] As a preferred solution, the blowing assembly 3 includes an air distribution pipe 31, a branch pipe 32, a blowing pipe 33 and a blowing valve 34; the blowing valve model is DMF-Y-76SDC24V.

[0054] The air distribution pipe 31 is fixedly arranged on the front side wall of the dust collecting box 12. In this embodiment, five air distribution pipes 31 are fixedly arranged corresponding to the front sides of the five blowing installation chambers 16. The five air distribution pipes 31 are connected by pipes. The right end of the air distribution pipe 31 at the right end is connected to an air supply component, which includes an air compressor 35 and an air storage tank 36. The air compressor 35 and the air storage tank 36 are both arranged on the right side of the dust collecting box 12. The air compressor 35 is connected to the air storage tank 36 through a pipe. The air outlet of the air storage tank 36 is connected to the air inlet of the air distribution pipe 31 through a pipeline. The air outlet of the air distribution pipe 31 is connected to several branch pipes 32 distributed in an array along the left and right directions. Several of the branch pipes 32 are provided with a spray valve 34. The rear ends of the several branch pipes 32 pass through the dust collection box 12 and extend into the spray installation chamber 16. The lower ends of the branch pipes 32 are connected to several spray pipes 33 distributed in an array along the front and back directions. The lower ends of the spray pipes 33 face the filter bag dust collection assembly 2.

[0055] The air compressor 35 and the spray valve 34 are both electrically connected to a controller 5 . The controller 5 controls the opening and closing of the air compressor 35 and the spray valve 34 based on the first and second air pressure detection signals. The air compressor model is LWH-150PM, and the manufacturer is Lida (China) Electromechanical Co., Ltd.

[0056] According to the difference between the first air pressure detection signal and the second air pressure detection signal, the controller 5 controls the opening and closing of the air compressor 35 and the blowing valve 34. If the pressure difference between the first air pressure detection signal of the flue gas inlet pipe 13 of the dust collecting box 12 and the second air pressure detection signal of the flue gas outlet pipe 14 is greater than the "pressure differential cleaning start value" preset by the controller 5, the controller 5 controls the air compressor 35 and the blowing valve 34 to start and perform a spray cleaning process on the filter bag 22. Specifically, the eight blowing valves 34 on the first group of blowing assemblies 3 of the dust collecting box 12 are started one by one, so that the blowing valve 34 is opened to play a cleaning role. After the eight blowing valves 34 are started in sequence, the next chamber repeats the above operation for cleaning, from right to left, until the real-time pressure difference value is less than the set "pressure differential cleaning stop value", the cleaning is suspended, and the controller 5 controls the air compressor 35 and the blowing valve 34 to close, waiting for the next pressure difference value to be greater than the "pressure differential cleaning start value", and starts cleaning again, and so on.

[0057] The sensor module 4 also includes a third pressure transmitter 43 , which is electrically connected to the controller 5 . The third pressure transmitter 43 is disposed on the air distribution pipe 31 , detects the air pressure value of the compressed air in the air distribution pipe 31 , and feeds back a third air pressure detection signal to the controller 5 .

[0058] The third pressure transmitter 43 is used to detect the pressure of the compressed air in the air distribution pipe 31 to ensure the pressure of the compressed air entering the branch pipe 32 and the blowpipe in the air distribution pipe 31, that is, to ensure the pressure during blowing, so as to achieve a better cleaning effect on the filter bag 22.

[0059] The filter bag dust collecting assembly 2 includes a filter bag mounting plate 21 and a filter bag 22;

[0060] The filter bag mounting plate 21 is fixedly arranged on the top of the filter bag mounting chamber 15, and is used to separate the filter bag mounting chamber 15 from the injection mounting chamber 16. A plurality of air filter ports 23 are opened on the filter bag mounting plate 21, and the plurality of air filter ports 23 are distributed in an array on the filter bag mounting plate 21. The plurality of air filter ports 23 are distributed in a rectangular array on the filter bag mounting plate 21. The bottom of the filter bag mounting plate 21 is connected with a plurality of filter bags 22, and the plurality of filter bags 22 are arranged relative to the plurality of air filter ports 23. The plurality of injection pipes 33 are arranged relative to the plurality of air filter ports 23, and the injection pipes 33 are located directly above the corresponding filter bags 22. The filter bag 22 is installed in the filter bag installation chamber 15 by the filter bag installation plate 21, which is convenient for installation. The filter bag installation plate 21 is provided with an air filter port 23, so that the gas after the dust is filtered by the smoke bag 22 enters the injection installation chamber 16 through the air filter port 23, which is convenient for subsequent exhaust. The injection pipe 33 is located directly above the corresponding filter bag 22, so that the compressed air in the injection pipe 33 can expand rapidly in the upper box body in a short time and flow into the filter bag 22, causing the filter bag 22 to expand, deform and vibrate, and under the action of the reverse airflow, the dust attached to the outer surface of the filter bag 22 is peeled off and falls into the ash hopper, thereby realizing the cleaning of the filter bag 22.

[0061] A keel is provided inside the filter bag 22 to facilitate supporting the filter bag 22 .

[0062] As a preferred embodiment, the invention further includes an exhaust chamber 17 and a lift valve 6. The exhaust chamber 17 is arranged at the rear side of the filter bag installation chamber 15. The exhaust chamber 17 is not connected to the filter bag installation chamber 15 and is separated by a partition. The exhaust chamber 17 is connected to the filter bag installation chamber 15 through the injection installation chamber 16. The exhaust chamber 17 is located below the injection installation chamber 16. The flue gas outlet pipe 14 is connected to the left end of the exhaust chamber 17. A vent 18 is provided on the top of the exhaust chamber 17 for connecting to the injection installation chamber 16. The lift valve 6 is arranged in the injection installation chamber 16. The driving end of the lift valve 6 can abut against the vent 18, so that the vent 18 is in a closed state. Five lift valves 6 are provided corresponding to the exhaust chamber 17, and are respectively arranged in the exhaust chamber 17.

[0063] In this embodiment, the lifting valve 6 includes a cylinder 61 and an abutment plate 62. The cylinder 61 is vertically fixedly installed on the top of the dust collecting box 12. The driving end of the cylinder 61 vertically penetrates the top of the dust collecting box 12 and extends into the blowing installation chamber 16 and is fixedly connected to the top of the abutment plate 62. The abutment plate 62 is located directly above the vent 18. The driving end of the cylinder 61 can drive the abutment plate 62 to abut on the vent, thereby blocking the vent 18, so that the smoke cannot pass from the blowing installation chamber 16 through the vent 18 into the exhaust chamber 17, thereby closing the blowing installation chamber 16. The diameter of the abutment plate 62 is larger than the diameter of the vent 18.

[0064] As a preferred embodiment, the sensor module 4 also includes a temperature sensor 44, which is a thermal resistor (RTR) model TXY510-RZ-LC with a range of 0-500°C. The temperature sensor 44 is electrically connected to the controller 5 and is disposed on the flue gas inlet pipe 13. The temperature sensor 44 detects the flue gas temperature within the flue gas inlet pipe 13 and feeds back a temperature detection signal to the controller 5. A cold air valve 7 is also disposed on the flue gas inlet pipe 13, and the controller 5 controls the opening and closing of the cold air valve 7 based on the temperature detection signal. The temperature sensor 44 detects the flue gas temperature within the flue gas inlet pipe 13 and feeds back a temperature detection signal to the controller 5. When the temperature detection signal indicates that the flue gas temperature within the flue gas inlet pipe 13 exceeds a preset temperature threshold, the controller 5, based on the temperature detection signal, controls the cold air valve 7 to open, thereby allowing cold air to flow into the flue gas inlet pipe 13. The temperature sensor 44 detects that the flue gas temperature within the flue gas inlet pipe 13 is normal, at which point the controller 5 controls the cold air valve 7 to close.

[0065] Specifically, the cold air valve 7 is automatically controlled according to the flue gas temperature at the flue gas inlet of the dust collection box 12. When the inlet flue gas temperature exceeds the "inlet flue gas temperature alarm setting value" for 3 seconds, the cold air valve 7 begins to open. When the inlet flue gas temperature falls below the "inlet flue gas temperature alarm setting value" for 10 seconds, the cold air valve 7 begins to close.

[0066] The device also includes a reminder module electrically connected to the controller 5. The controller 5 controls the activation and deactivation of the reminder module based on the temperature detection signal. The reminder module includes a buzzer and an indicator light. When the temperature detection signal indicates that the smoke temperature in the smoke inlet pipe 13 exceeds a preset temperature threshold, the user is alerted through sound and light.

[0067] As a preferred embodiment, the device further includes a timer module electrically connected to the controller 5. The controller 5 controls the sensor module 4 to detect data based on signals from the timer module. The timer module controls the detection frequency of the sensor module 4 to prevent the sensor module 4 from performing excessive invalid detection operations due to excessive detection frequency, thereby reducing energy consumption. In this embodiment, the timer module uses a timing circuit composed of a timing chip. In other embodiments of the present application, the timing function can also be implemented using a timer built into the controller 5.

[0068] Specifically, the system performs cyclic cleaning according to the set time. The spray time is the duration during which the spray valve 34 remains energized. This setting is adjustable, with a default value of 0.2 seconds. The spray interval is the time between the actuation of two spray valves 34. This setting is adjustable, with a default value of 20 seconds. The cycle interval is the time between the next actuation of all air bag spray valves 34 after they have been actuated. This setting is adjustable, with a default value of 60 seconds. Sequential cleaning can be used to maintain a stable pressure drop within the dust collector by adjusting the spray interval.

[0069] The controller 5 sends the first air pressure detection signal, the second air pressure detection signal, the third air pressure detection signal and the temperature detection signal to the cloud server through the network communication module, and the controller 5 and the remote monitoring terminal perform data transmission through the cloud server.

[0070] The working mode of the utility model is as follows:

[0071] like Figure 4 As shown, when in use, when dust-laden flue gas needs to be removed, the flue gas outlet pipe is connected to an induced draft fan at one end away from the dust collector, and the dust-laden flue gas is introduced into the dust collecting box 12 from the flue gas inlet pipe 13. At the same time, the lifting valve 6 is started, that is, the cylinder 61 is started to drive the abutment plate 62 to move upward and separate from the vent 18. Due to the action of the induced draft fan, negative pressure is generated and filtered and purified through the filter bag 22. The dust is attached to the outer surface of the filter bag 22. The gas after the dust is filtered by the filter bag 22 enters the filter bag 22 and enters the injection installation chamber 16 through the filter port 23. Figure 3 As shown, since the poppet valve 6 is open, the purified gas can enter the exhaust chamber 17 through the vent 18 and be discharged through the flue gas outlet pipe 14 at the left end of the exhaust chamber 17;

[0072] As the dust-laden flue gas passes through the filter bag 22 for purification, the dust on the filter bag 22 accumulates continuously as the filtration time increases, increasing the resistance of the filter bag 22. In order to make the filter bag 22 work normally and efficiently, the resistance must be controlled within the specified range (140-170 mm water column). When the equipment resistance rises to the set value, the cleaning device starts to clean the dust. Specifically, Figure 1 and Figure 4As shown, the air pressure value of the flue gas in the flue gas inlet pipe 13 is detected by the first pressure transmitter 41, and the first air pressure detection signal is fed back to the controller 5. The second pressure transmitter 42 detects the air pressure value of the flue gas in the flue gas outlet pipe 14, and the second air pressure detection signal is fed back to the controller 5. If the pressure difference between the first air pressure detection signal of the flue gas inlet pipe 13 of the dust collecting box 12 and the second air pressure detection signal of the flue gas outlet pipe 14 is greater than the "pressure differential cleaning start value" preset by the controller 5, the controller 5 controls the air compressor 35 and the spray valve 34 to start, and at the same time controls the lifting valve 6 to close, that is, the starting cylinder 61 drives the abutment plate 62 to move downward and abut on the vent 18, blocking the vent 18, and performing a spray cleaning process on the filter bag 22 until the real-time pressure difference value is less than the set "pressure differential cleaning stop value", and the cleaning is suspended. The controller 5 controls the air compressor 35 and the spray valve 34 to close, and the lifting valve 6 to open, and the chamber resumes the filtering state. Wait until the next pressure difference value is greater than the "pressure difference cleaning start value" and start cleaning again, and repeat this cycle. Specifically, the cleaning of each chamber is carried out from left to right, and the cleaning cycle starts from the leftmost chamber to the next cleaning.

[0073] This solution controls the cleaning according to the size of the gas differential pressure (or resistance) between the flue gas inlet pipe 13 and the flue gas outlet pipe 14 of the dust box 12, which can effectively improve the dust collection efficiency of the dust box 12, realize remote monitoring of the operating status of the dust box 12, save manpower and can be unmanned, and avoid premature spraying and cleaning before the dust collector resistance reaches the designed resistance. Too many times of blowing and cleaning will not only increase the compressed air consumption, but also reduce the dust removal efficiency, affecting the life of the filter bag 22 and the corrugated diaphragm. This solution cleans the dust box 12 after the pressure differential increases, which can save compressed air usage and greatly extend the life of components such as the diaphragm and filter bag 22.

[0074] In addition, in other embodiments, historical trend curve monitoring can be performed in the DCS system to monitor the pressure difference signal curve. When the pressure difference signal is much lower than the normal operating value, it can be determined whether there is a bag leakage phenomenon.

[0075] The above describes the present invention in detail. The description of the specific embodiments is intended only to facilitate understanding of the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A high-efficiency dust collecting device for a bag filter dust collector, characterized by: The invention comprises a filter bag dust collecting device (1), wherein the filter bag dust collecting device (1) comprises a sensor module (4), a controller (5) and a device body (11); The device body (11) comprises a dust collecting box (12), a filter bag dust collecting assembly (2) and a blowing assembly (3); The two ends of the dust collecting box (12) are respectively connected to a smoke inlet pipe (13) and a smoke outlet pipe (14); the filter bag dust collecting assembly (2) is arranged in the dust collecting box (12); and the blowing assembly is capable of blowing the filter bag dust collecting assembly (2); The sensor module (4) comprises a first pressure transmitter (41) and a second pressure transmitter (42); The first pressure transmitter (41), the second pressure transmitter (42), the spray assembly (3) and the network communication module are all electrically connected to the controller (5); The first pressure transmitter (41) is arranged on the smoke inlet pipe (13), detects the pressure value of the smoke in the smoke inlet pipe (13), and feeds back a first pressure detection signal to the controller (5); The second pressure transmitter (42) is arranged on the smoke outlet pipe (14), detects the pressure value of the smoke in the smoke outlet pipe (14), and feeds back a second pressure detection signal to the controller (5); The controller (5) controls the opening and closing of the blowing component (3) according to the first air pressure detection signal and the second air pressure detection signal.

2. The high-efficiency dust collecting device of a bag filter dust collector according to claim 1, characterized in that: It also includes a cloud server, a remote monitoring terminal and a network communication module; the controller (5) sends the first air pressure detection signal and the second air pressure detection signal to the cloud server through the network communication module, and the controller (5) and the remote monitoring terminal perform data transmission through the cloud server.

3. The high-efficiency dust collecting device of a filter bag dust collector according to claim 1, characterized in that: Several filter bag installation chambers (15) are arranged in communication with each other in the left and right directions in the dust collecting box (12); the flue gas inlet pipe (13) is arranged at the right end of the dust collecting box (12) and is communicated with the filter bag installation chamber (15); filter bag dust collecting assemblies (2) are arranged in the several filter bag installation chambers (15); and a blowing installation chamber (16) is connected above the several filter bag installation chambers (15); and the blowing assembly (3) is arranged in the blowing installation chamber (16).

4. The high-efficiency dust collecting device of a bag filter dust collector according to claim 3, characterized in that: The invention also includes an exhaust chamber (17) and a lifting valve (6), wherein the exhaust chamber (17) is arranged at the rear side of the filter bag installation chamber (15), and the exhaust chamber (17) is located below the spray installation chamber (16). The smoke outlet pipe (14) is connected to the left end of the exhaust chamber (17), and a vent (18) is provided on the top of the exhaust chamber (17) for connecting to the spray installation chamber (16). The lifting valve (6) is arranged in the spray installation chamber (16), and the driving end of the lifting valve (6) can abut against the vent (18), so that the vent (18) is in a closed state.

5. The high-efficiency dust collecting device of a filter bag dust collector according to claim 3, characterized in that: The spray assembly (3) comprises an air distribution pipe (31), a branch pipe (32), a spray pipe (33) and a spray valve (34); The air distribution pipe (31) is fixedly arranged on the front side wall of the dust collecting box (12), one end of the air distribution pipe (31) is connected to an air supply part, the air outlet of the air supply part is connected to the air inlet of the air distribution pipe (31), the air outlet of the air distribution pipe (31) is connected to a plurality of branch pipes (32) arranged in an array along the left and right directions, and a spray valve (34) is arranged on each of the branch pipes (32), the rear ends of the plurality of branch pipes (32) pass through the dust collecting box (12) and extend into the spray installation chamber (16), the lower ends of the branch pipes (32) are connected to a plurality of spray pipes (33) arranged in an array along the front and rear directions, and the lower ends of the spray pipes (33) face the filter bag dust collecting assembly (2); The air supply component and the blowing valve (34) are both electrically connected to a controller (5); the controller (5) controls the opening and closing of the air supply component and the blowing valve (34) according to the first air pressure detection signal and the second air pressure detection signal.

6. The high-efficiency dust collecting device of a bag filter dust collector according to claim 5, characterized in that: The sensor module (4) further comprises a third pressure transmitter (43), the third pressure transmitter (43) being electrically connected to the controller (5), the third pressure transmitter (43) being arranged on the air distribution pipe (31), detecting the air pressure value of the compressed air in the air distribution pipe (31), and feeding back a third air pressure detection signal to the controller (5).

7. The high-efficiency dust collecting device of a bag filter dust collector according to claim 5, characterized in that: The filter bag dust collecting assembly (2) comprises a filter bag mounting plate (21) and a filter bag (22); The filter bag mounting plate (21) is fixedly arranged on the top of the filter bag mounting chamber (15) and is used to separate the filter bag mounting chamber (15) from the spray mounting chamber (16). The filter bag mounting plate (21) is provided with a plurality of air filter ports (23). The plurality of air filter ports (23) are distributed in an array on the filter bag mounting plate (21). The bottom of the filter bag mounting plate (21) is connected with a plurality of filter bags (22). The plurality of filter bags (22) are arranged relative to the plurality of air filter ports (23). The plurality of spray pipes (33) are arranged relative to the plurality of air filter ports (23). The spray pipes (33) are located directly above the corresponding filter bags (22).

8. The high-efficiency dust collecting device of a bag filter dust collector according to claim 1, characterized in that: The sensor module (4) further includes a temperature sensor (44), the temperature sensor (44) being electrically connected to the controller (5), the temperature sensor (44) being arranged on the smoke inlet pipe (13), detecting the smoke temperature in the smoke inlet pipe (13), and feeding back a temperature detection signal to the controller (5); A cold air valve (7) is also provided on the smoke inlet pipe (13), and the controller (5) controls the opening and closing of the cold air valve (7) according to the temperature detection signal.

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