Intelligent dust remover control system and method

Abstract

The invention provides an intelligent dust remover control system and method.The system comprises a pressure difference sensor, a pulse soot blowing module, a sound wave soot blowing module, a flow sensor and a PLC, and the pressure difference sensor is used for monitoring the pressure difference value between the clean face and the dirty face of a filter cartridge or a filter bag; the pulse soot blowing module comprises a pneumatic proportional valve used for adjusting the injection pressure and a pulse electromagnetic valve used for adjusting the injection pulse width and the pulse injection period. The sound wave soot blowing module comprises a sound wave soot blower; and the controller is in signal connection with the differential pressure sensor, the pulse soot blowing module and the sound wave soot blowing module. The system has the advantages that the pulse soot blowing module and the sound wave soot blowing module can be automatically and effectively controlled and reasonably utilized, the start and stop of the corresponding modules are timely controlled, the working parameters are regulated and controlled, the dust remover is ensured to work in a more reasonable, effective and economical manner, the dust remover can be ensured to keep a good working state in a longer time period, and the working efficiency is improved. The energy consumption is reduced, the labor cost of maintenance regulation and control is reduced, and possible errors caused by manual regulation and control are avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of dust removal equipment, and in particular relates to an intelligent dust collector control system and method. Background Art

[0002] The dust collector is a device that separates dust from flue gas. The quality of the dust collector not only directly affects the reliable operation of the dust removal system, but also affects the normal operation of the production system, the environmental sanitation of the workshop and surrounding residents, the wear and life of the fan blades, and also involves the recycling of economically valuable materials.

[0003] Existing conventional dust collectors have the following shortcomings: there is no reasonable spray control system, which causes dust to easily agglomerate on the surface of the filter cartridge / filter bag; unreasonable spray pressure leads to large spray gas consumption; the water content of the compressed air in the air source cannot be monitored; the electromagnetic pulse valve cannot be detected after being damaged, resulting in poor dust removal effect; there is no reasonable cleaning control system, which leads to a short life of the filter cartridge / filter bag, high maintenance costs, and even affects the production process. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an intelligent dust collector control system and method, aiming to overcome the above-mentioned deficiencies in the prior art.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: an intelligent dust collector control system, comprising:

[0006] Differential pressure sensor, used to monitor the differential pressure between the clean side and the dirty side of the filter cartridge or filter bag;

[0007] A pulse soot blowing module, comprising a pneumatic proportional valve for adjusting the blowing pressure and a pulse solenoid valve for adjusting the blowing pulse width and the pulse blowing cycle;

[0008] An acoustic sootblowing module, comprising an acoustic sootblower and a start / stop solenoid valve for controlling the start / stop of the acoustic sootblower;

[0009] and a controller, which is used to be signal-connected to the pressure difference sensor, the pulse soot blowing module and the sonic soot blowing module so as to regulate the working states of the pulse soot blowing module and the sonic soot blowing module according to the pressure difference signal transmitted by the pressure difference sensor.

[0010] Based on the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, each spraying pipe provided with the pulse solenoid valve is correspondingly provided with an air flow meter, and each air flow meter is electrically connected to the controller.

[0012] Furthermore, it includes an air temperature and humidity sensor arranged on the compressed air pipeline, and the air temperature and humidity sensor is electrically connected to the controller.

[0013] Furthermore, an alarm is included, and the alarm is electrically connected to the controller.

[0014] Furthermore, it includes an air pressure sensor arranged on the compressed gas delivery pipeline of the air compressor, and the air pressure sensor is electrically connected to the controller.

[0015] Furthermore, it includes a dust concentration sensor, which is arranged at the air outlet of the dust collector and is electrically connected to the controller.

[0016] Furthermore, it comprises a material level meter, which is arranged on the dust collector hopper and is electrically connected to the controller.

[0017] Furthermore, the controller is a PLC.

[0018] The present invention also provides an intelligent dust collector control method, which uses the above control system and includes the following steps:

[0019] S1. The dust collector and the air compressor are started and stopped synchronously. When the dust collector fan is powered on and started, the air compressor is also started synchronously. The differential pressure sensor continuously monitors the differential pressure value between the clean side and the dirty side of the filter cartridge or filter bag, and transmits the differential pressure value to the controller. The controller compares the obtained differential pressure value P0 with the preset differential pressure lower limit value P1 and differential pressure upper limit value P2: if P0<P1, proceed to step S2; if P1≤P0<P2, proceed to step S3; if P0≥P2, proceed to step S4;

[0020] S2. Both the pulse soot blowing module and the sonic soot blowing module remain in a stopped state;

[0021] S3. The pulse soot blowing module is started and runs with the preset pneumatic proportional valve and pulse solenoid valve parameters. The sonic soot blowing module remains stopped. When the controller finds through comparison that P0 gradually decreases over time but is still not less than P1, the blowing pressure of the pneumatic proportional valve is lowered according to the set procedure. When the controller finds through comparison that P0 gradually increases over time but is still less than P2, the blowing pressure of the pneumatic proportional valve is increased according to the set procedure. When the blowing pressure has been adjusted to the maximum but P0 still gradually increases, the pulse width of the pulse solenoid valve is gradually reduced according to the set procedure and the blowing and cleaning cycle is reduced;

[0022] S4. The pulse soot blowing module and the sonic soot blowing module are started simultaneously or alternately. If the controller finds that P0 has not decreased and the duration exceeds the set value, the control alarm will send out an alarm signal to remind the user that the filter cartridge or filter bag needs maintenance or replacement.

[0023] Specifically, in steps S1, S2, S3 and S4, the air flow meter, air pressure sensor, air temperature and humidity sensor, dust concentration sensor and material level meter are all controlled by the controller to operate according to the set program.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The intelligent dust collector control system and method provided by the present invention can automatically and effectively control and reasonably utilize the pulse soot blowing module and the sonic soot blowing module, and timely control the start and stop of the pulse soot blowing module and / or the sonic soot blowing module and adjust the working parameters, including the blowing pressure, pulse width and cycle, etc., so as to ensure that the dust collector blows soot in a more reasonable, effective and economical manner, thereby ensuring that the dust collector maintains a good working condition for a long period of time, reducing energy consumption, reducing the manpower cost of maintenance and regulation, and avoiding possible human errors in manual regulation.

[0026] The use of sensing or metering components such as air flow meters, air pressure sensors, air temperature and humidity sensors, dust concentration sensors and material level meters can ensure that any failure of the functional components of the dust collector can be detected quickly and intelligently, which is conducive to the staff to quickly and accurately troubleshoot the fault, ensure the normal operation of the dust collector, and avoid production or safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A signal transmission relationship block diagram of an intelligent dust collector control system provided by the present invention;

[0028] Figure 2 An axonometric view of the intelligent dust collector control system provided by the present invention, when installed on the dust collector and viewed from the left front side;

[0029] Figure 3 An axonometric view of the intelligent dust collector control system provided by the present invention observed from the right front side after being installed on the dust collector.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1. Differential pressure sensor; 2. Pulse soot blowing module; 3. Sonic soot blowing module; 4. Controller; 5. Air flow meter; 6. Material level meter; 20. Pulse solenoid valve; 30. Sonic soot blower. DETAILED DESCRIPTION

[0032] The principles and features of the present invention are described below in conjunction with the accompanying drawings and specific embodiments. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0033] In the description of the present invention, if terms indicating orientation such as "up", "down", "left", "right", "top", "bottom", "inside" and "outside" are used, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] like Figures 1 to 3 As shown, the present invention provides an intelligent dust collector control system, which includes: a pressure difference sensor 1, which is used to monitor the pressure difference between the clean surface and the dirty surface of the filter cartridge or filter bag; a pulse soot blowing module 2, which includes a pneumatic proportional valve for adjusting the blowing pressure and a pulse solenoid valve 20 for adjusting the blowing pulse width and the pulse blowing period; a sonic soot blowing module 3, which includes a sonic soot blower 30 and a start-stop solenoid valve for controlling the start and stop of the sonic soot blower 30; and a controller 4, which is used to connect with the pressure difference sensor 1, the pulse soot blowing module 2 and the sonic soot blowing module 3 by signal so as to regulate the working states of the pulse soot blowing module 2 and the sonic soot blowing module 3 according to the pressure difference signal transmitted by the pressure difference sensor 1.

[0035] It should be noted that the controller can be used to pre-set thresholds for controlling the working status of the pulse soot blowing module and the ultrasonic soot blowing module. According to various typical working conditions and the new and old conditions of the equipment, several sets of thresholds for control can be preset. During actual work, a specific set of thresholds can be selected for use. For example, when the pressure difference between the clean surface and the dirty surface of the filter cartridge / filter bag is low and the lower limit of the threshold is set, the blowing system stops; if it is higher than the set upper limit of the threshold and does not drop within a certain period of time, an alarm is issued.

[0036] In one embodiment of the present invention, each spraying pipeline provided with the pulse solenoid valve 20 is correspondingly provided with an air flow meter 5 , and each air flow meter 5 is electrically connected to the controller 4 .

[0037] It should be noted that pulse solenoid valves may be damaged after being used for a period of time. To prevent the pulse solenoid valve from being damaged and unable to spray on the surface of the filter cartridge, resulting in reduced dust removal effect. To address this problem, an air flow meter is installed on the air intake pipe. When the spray signal is given, if there is no flow or no flow change on the flow meter, it can be determined that the electromagnetic pulse valve is not open for spraying. The corresponding pulse solenoid valve opening sequence can be used to determine which electromagnetic pulse valve is damaged, so as to facilitate the search, maintenance or replacement.

[0038] In one embodiment of the present invention, an air temperature and humidity sensor is provided on the compressed air pipeline, and the air temperature and humidity sensor is electrically connected to the controller 4 .

[0039] It should be noted that in this embodiment, an air temperature and humidity sensor is added to the compressed air pipeline to detect the temperature and humidity in the compressed air, prevent the moisture in the compressed air from being too high and causing the surface of the filter cartridge to become hardened, and reduce the risk of filter cartridge clogging.

[0040] In one embodiment of the present invention, an alarm is included, and the alarm is electrically connected to the controller 4 .

[0041] It should be noted that the alarm can emit a variety of different types of alarm sounds or emit warning lights of different colors. For example, the alarm sound can be more rapid or more soothing to indicate the occurrence of different faults or specific situations.

[0042] In one embodiment of the present invention, an air pressure sensor is provided on a compressed gas delivery pipeline of an air compressor, and the air pressure sensor is electrically connected to the controller 4 .

[0043] It should be noted that the air pressure sensor can monitor whether the air pressure in the compressed gas delivery pipeline is within the pressure value range when the air compressor is working normally. If it deviates from the normal pressure value range, the controller can control the alarm to send an alarm signal. Specifically, for example, during the production process, if the air compressor is abnormal, the dust collector will not be able to spray due to the lack of compressed air, which will reduce the dust removal effect. The pressure sensor can detect the pipeline pressure in real time. When the system detects abnormal pressure, it will send an alarm signal. At the same time, if there is a backup air source, it will automatically switch to the backup air pipe, so that the purpose of maintaining the air compressor can be achieved without stopping.

[0044] In one embodiment of the present invention, a dust concentration sensor is included. The dust concentration sensor is arranged at the air outlet of the dust collector and is electrically connected to the controller 4 .

[0045] It is understandable that the change in the exhaust outlet concentration monitor value can be used to monitor whether the filter cartridge / filter bag is damaged, thereby determining whether the filter cartridge or filter bag needs to be replaced.

[0046] In one embodiment of the present invention, a material level meter 6 is included. The material level meter 6 is arranged on the dust collector hopper and is electrically connected to the controller 4 .

[0047] It should be noted that the level meter can be a rotary paddle level meter. When the ash in the ash hopper accumulates to a certain amount, the rotary paddle level meter will be stuck and output a signal alarm to prevent excessive dust from remaining in the dust collector and causing damage to the equipment.

[0048] In one embodiment of the present invention, the controller 4 is a PLC.

[0049] It is understandable that, in addition to PLC, the controller may also be a programmable controller familiar to those skilled in the art.

[0050] The present invention also provides an intelligent dust collector control method, which uses the above control system and includes the following steps:

[0051] S1. The dust collector and the air compressor are started and stopped synchronously. When the dust collector fan is powered on and started, the air compressor is also started synchronously. The pressure difference sensor 1 continuously monitors the pressure difference between the clean side and the dirty side of the filter cartridge or filter bag, and transmits the pressure difference value to the controller 4. The controller 4 compares the obtained pressure difference value P0 with the preset pressure difference lower limit value P1 and pressure difference upper limit value P2: if P0<P1, proceed to step S2; if P1≤P0<P2, proceed to step S3; if P0≥P2, proceed to step S4;

[0052] S2. The pulse soot blowing module 2 and the sonic soot blowing module 3 are both kept stopped;

[0053] S3. The pulse soot blowing module 2 is started and runs with the preset pneumatic proportional valve and pulse solenoid valve parameters, and the sonic soot blowing module 3 remains in a stopped state. When the controller 4 finds through comparison that P0 gradually decreases over time but is still not less than P1, the blowing pressure of the pneumatic proportional valve is lowered according to the set procedure. When the controller 4 finds through comparison that P0 gradually increases over time but is still less than P2, the blowing pressure of the pneumatic proportional valve is increased according to the set procedure. When the blowing pressure has been adjusted to the maximum but P0 still gradually increases, the pulse width of the pulse solenoid valve is gradually reduced according to the set procedure and the blowing and cleaning cycle is reduced;

[0054] S4. The pulse soot blowing module 2 and the sonic soot blowing module 3 are started simultaneously or alternately. If the controller 4 finds that P0 has not decreased and the duration exceeds the set value, the control alarm sends an alarm signal to remind the user that the filter cartridge or filter bag needs maintenance or replacement.

[0055] Specifically, in steps S1, S2, S3 and S4, the air flow meter 5, the air pressure sensor, the air temperature and humidity sensor, the dust concentration sensor and the material level meter 6 are all controlled by the controller 4 to operate according to the set program.

[0056] It should be noted that the above method provided by the present invention measures the pressure difference between the dirty side and the clean side of the filter cartridge or filter bag in the box through the pressure difference sensor on the dust collector. The controller controls the pulse soot blowing module and / or the sonic soot blowing module to perform spray cleaning according to the pressure difference data fed back. When the pressure difference reaches the set value, the spraying starts. After the spraying is completed, the pressure difference decreases. If the pressure difference does not decrease after a certain period of time (the spraying pressure has been automatically adjusted), the system will automatically reduce the pulse width and reduce the spray cleaning cycle to increase the intensity of the spray cleaning. When the pressure difference is reduced to a certain extent, the original spray cycle and width can be restored. If the pressure difference value cannot be effectively reduced by adjusting the pulse width and reducing the spray cleaning cycle, and eventually the pressure difference value rises above the upper threshold value and remains for a certain period of time, the sonic soot blower is started. If the pressure difference value cannot be reduced, an alarm signal needs to be given.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent dust collector control system, characterized in that: include: A differential pressure sensor (1) is used to monitor the differential pressure between the clean side and the dirty side of the filter cartridge or filter bag; A pulse soot blowing module (2), comprising a pneumatic proportional valve for adjusting the blowing pressure and a pulse solenoid valve (20) for adjusting the blowing pulse width and the pulse blowing period; A sonic sootblowing module (3) comprises a sonic sootblower (30) and a start / stop solenoid valve for controlling the start / stop of the sonic sootblower (30); and a controller (4) for signal connection with the pressure difference sensor (1), the pulse soot blowing module (2) and the sonic soot blowing module (3) so as to regulate the working state of the pulse soot blowing module (2) and the sonic soot blowing module (3) according to the pressure difference signal transmitted by the pressure difference sensor (1).

2. The intelligent dust collector control system according to claim 1, characterized in that: The main air intake duct provided with the pulse solenoid valve (20) is correspondingly provided with an air flow meter (5), and the air flow meter (5) is electrically connected to the controller (4).

3. The intelligent dust collector control system according to claim 1, characterized in that: It comprises an air temperature and humidity sensor arranged on a compressed air pipeline, and the air temperature and humidity sensor is electrically connected to the controller (4).

4. The intelligent dust collector control system according to claim 1, characterized in that: It comprises an alarm, and the alarm is electrically connected to the controller (4).

5. The intelligent dust collector control system according to claim 1, characterized in that: It comprises an air pressure sensor arranged on a compressed gas delivery pipeline of an air compressor, and the air pressure sensor is electrically connected to the controller (4).

6. The intelligent dust collector control system according to claim 1, characterized in that: It comprises a dust concentration sensor, which is arranged at the air outlet of the dust collector and is electrically connected to the controller (4).

7. The intelligent dust collector control system according to claim 1, characterized in that: It comprises a material level meter (6), which is arranged on the dust collector hopper and is electrically connected to the controller (4).

8. An intelligent dust collector control system according to any one of claims 1 to 7, characterized in that: The controller (4) is a PLC.

9. A smart dust collector control method, characterized in that: Using the control system according to any one of claims 1 to 7, comprising the following steps: S1. The dust collector and the air compressor are started and stopped synchronously. When the dust collector fan is powered on and started, the air compressor is also started synchronously. The pressure difference sensor (1) continuously monitors the pressure difference between the clean side and the dirty side of the filter cartridge or filter bag, and transmits the pressure difference value to the controller (4). The controller (4) compares the obtained pressure difference value P0 with the preset pressure difference lower limit value P1 and pressure difference upper limit value P2: if P0<P1, then proceed to step S2; if P1≤P0<P2, then proceed to step S3; if P0≥P2, then proceed to step S4; S2. The pulse soot blowing module (2) and the sonic soot blowing module (3) are both kept in a stopped state; S3. The pulse soot blowing module (2) is started and operates with the preset pneumatic proportional valve and pulse solenoid valve parameters, and the sonic soot blowing module (3) remains in a stopped state. When the controller (4) finds through comparison that P0 gradually decreases over time but is still not less than P1, the blowing pressure of the pneumatic proportional valve is lowered according to the set procedure. When the controller (4) finds through comparison that P0 gradually increases over time but is still less than P2, the blowing pressure of the pneumatic proportional valve is increased according to the set procedure. When the blowing pressure has been adjusted to the maximum but P0 still gradually increases, the pulse width of the pulse solenoid valve is gradually reduced according to the set procedure and the blowing and cleaning cycle is reduced; S4. The pulse soot blowing module (2) and the sonic soot blowing module (3) are started simultaneously or alternately. If the controller (4) finds that P0 has not decreased and the duration exceeds the set value, the control alarm sends an alarm signal to remind the user that the filter cartridge or filter bag needs maintenance or replacement.

10. The intelligent dust collector control method according to claim 9, characterized in that: In steps S1, S2, S3 and S4, the air flow meter (5), the air pressure sensor, the air temperature and humidity sensor, the dust concentration sensor and the material level meter (6) are all controlled by the controller (4) to operate according to the set program.

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