CN221846447U - Pulse cloth bag dust collector controlled by PLC - Google Patents

Abstract

The utility model provides a pulse bag-type dust collector controlled by a PLC (programmable logic controller), and belongs to the technical field of dust collection equipment. The dust collector comprises a dust collector shell and a PLC control unit, wherein a dust inlet pipe is arranged at the lower part of the dust collector shell, a dust collection bag mounting plate is arranged in the dust collector shell, a plurality of dust collection bags are uniformly distributed on the dust collection bag mounting plate, the dust collector shell is divided into a clean room and a dust collection room by the dust collection bag mounting plate, an exhaust mechanism is arranged on the side wall of the clean room, the top end of the dust collection bag is a pulse air inlet end fixed on the dust collection bag mounting plate, a pulse ash removing device is arranged at the top of the dust collector shell, the pulse ash removing device is connected with the PLC control unit, the lower end of the dust collection bag is fixed through a cage framework arranged in the dust collector shell, a dust collection hopper is arranged at the bottom of the dust collector shell, and an inner wall ash shaking device is arranged on the inner wall of the dust collector shell below the dust collection bag. The PLC control unit controls the pulse airflow to blow and spray, so that the operation and the maintenance are convenient; the dust shaking plate can repeatedly swing back and forth to shake off dust.

Description

PLC controlled pulse bag dust collector

Technical Field

The utility model belongs to the technical field of dust removal equipment and relates to a pulse bag dust collector controlled by PLC.

Background Art

In recent years, with the continuous strengthening of environmental awareness, more and more companies have begun to pay attention to waste gas emissions in the production process, especially in some manufacturing industries. A large amount of dust will be generated in the production process. At present, bag-type vacuum cleaners are used to remove dust to filter the air. As the filtration process continues, the dust accumulation on the outside of the bag gradually increases, and the operating resistance of the dust collector also gradually increases, affecting the dust removal effect. Therefore, it is necessary to shake the bag in time. In addition, dust is easy to adhere to the inner wall of the dust collector, causing blockage and dust discharge.

Utility Model Content

The purpose of the utility model is to provide a pulse bag dust collector controlled by PLC in view of the above problems.

In order to achieve the above purpose, the utility model adopts the following technical solutions:

A PLC-controlled pulse bag dust collector comprises a dust collector shell and a PLC control unit, a dust inlet pipe is provided at the lower part of the dust collector shell, a dust bag mounting plate is provided in the dust collector shell, a plurality of dust bags are evenly distributed on the dust bag mounting plate, the dust bag mounting plate divides the dust collector shell into a purification chamber and a dust removal chamber respectively, an exhaust mechanism is provided on the side wall of the purification chamber, the top of the dust bag is a pulse air inlet end fixed on the dust bag mounting plate, a pulse cleaning device is provided on the top of the dust collector shell, the pulse cleaning device is connected to the PLC control unit, the lower end of the dust bag is fixed by a cage frame arranged in the dust collector shell, a dust collecting hopper is provided at the bottom of the dust collector shell, and an inner wall dust shaking device is provided on the inner wall of the dust collector shell below the dust bag.

The dust-laden airflow enters the dust collection chamber inside the dust collector shell through the dust inlet pipe. The exhaust mechanism operates to suck the dust-laden airflow from the dust collection chamber into the purification chamber. Some coarse dust particles fall into the dust collecting hopper due to inertial collision, natural sedimentation, etc. Most of the finer dust particles rise with the airflow. After being filtered by the dust bag, the dust particles will be retained on the outer wall of the dust bag, and the purified gas can pass through the dust bag and enter the inside of the dust bag and flow upward to the purification chamber, and then be discharged from the purification chamber by the exhaust mechanism. When the dust bag needs to be cleaned after a period of use, the pulse cleaning device can spray a pulse airflow to the pulse air inlet end of the dust bag. The high-pressure pulse airflow causes the dust bag to deform and shake. , so that the dust remaining on the outer surface of the dust collector bag is shaken off. At the same time, due to the reverse airflow, the dust remaining on the surface of the dust collector bag can be completely cleaned, and the shaken dust falls into the dust hopper. The inner wall shaking device on the inner wall of the dust collector shell can shake off the dust attached to the inner wall into the dust hopper, avoiding blockage and dust discharge caused by dust accumulation. The pulse cleaning device is connected to the PLC control unit, and the PLC control unit can be connected to the industrial intelligent gateway. That is, the real-time data in the pulse cleaning device can be collected through the gateway, and timely operation and maintenance operations can be performed. The PLC control unit can be remotely maintained on the computer, which improves the efficiency of equipment maintenance and reduces maintenance costs.

In the above-mentioned PLC-controlled pulse bag dust collector, the pulse cleaning device includes a pulse blowing pipe arranged at the top of the dust collector shell, the pulse blowing pipe is arranged horizontally, and a plurality of pulse nozzles connected to the pulse blowing pipe are arranged at the bottom of the pulse blowing pipe, and the blowing directions of the plurality of pulse nozzles correspond one by one to the pulse air inlet ends of the plurality of dust bags, respectively. An air bag is arranged on the top of the dust collector shell, and the air bag is connected to the pulse blowing pipe through a conveying pipeline, and the air bag is connected to an external air compressor, and an electromagnetic pulse valve is arranged in the conveying pipeline, and the electromagnetic pulse valve is connected to the PLC control unit.

When the dust bag needs to be cleaned, the PLC control unit controls the electromagnetic pulse valve to open, and the high-pressure airflow in the air bag enters the pulse spray pipe and performs pulse spraying on the pulse air inlet end of the dust bag through the pulse nozzle. The high-pressure pulse airflow causes the dust bag to deform and vibrate, so that the dust remaining on the outer surface of the dust bag is shaken off. At the same time, due to the reverse airflow, the dust remaining on the surface of the dust bag can be completely cleaned, which can effectively prevent the dust bag from being blocked and affecting the filtering effect and efficiency.

In the above-mentioned PLC-controlled pulse bag dust collector, the inner wall dust shaking device includes dust shaking plates hinged on the inner walls of the dust collector shell through hinged connecting parts, and an elastic driving component that can be compressed and provide elastic potential energy is provided between the bottom surface of the dust shaking plate and the inner wall of the dust collector shell. The dust shaking plates on the opposite sides are cone-shaped under the action of the elastic driving component. The dust collector shell is also provided with a driving structure that can intermittently drive the dust shaking plate to swing toward the inner wall side of the dust collector shell with the hinged connecting part as the axis to compress the elastic driving component.

The ash shaking plate is hinged on the inner wall of the dust collector shell and can swing with the hinged connecting part as the axis. The elastic driving component makes the cross-section of the ash shaking plates on both sides conical, which can guide the dust, and the driving structure can intermittently drive the ash shaking plate to swing toward the inner wall of the dust collector shell and compress the elastic driving component at the same time. The elastic driving component is compressed to generate elastic potential energy, which in turn drives the ash shaking plate to swing in the opposite direction. The repeated back and forth swinging of the ash shaking plate generates vibration to shake off the dust on the ash shaking plate into the dust collecting hopper, thereby avoiding blockage and dust discharge problems caused by dust accumulation.

In the above-mentioned PLC-controlled pulse bag dust collector, the driving structure includes a driving air pipe respectively penetrating the dust bag mounting plate and the cage frame and connected to the pulse blowing pipe, and a plurality of driving blowing pipes inclined toward the dust shaking plate are distributed on the lower outer wall of the driving air pipe.

The high-pressure airflow in the pulse blowing pipe enters the driving air pipe and pulse-blows the ash shaking plate through the driving blowing pipe inclined toward the ash shaking plate. The pulsed high-pressure airflow can intermittently drive the ash shaking plate to swing toward the inner wall of the dust collector shell, compressing the elastic driving component during the swinging of the ash shaking plate.

In the above-mentioned PLC-controlled pulse bag dust collector, the elastic driving assembly includes a plurality of elastic driving springs arranged on the bottom surface of the dust shaking plate and distributed along the length direction of the dust shaking plate.

Driven by the high-pressure airflow, the dust shaking plate swings toward the inner wall of the dust collector shell with the hinged connection as the axis, and the elastic driving spring on the bottom of the dust shaking plate is compressed to generate elastic potential energy. When the high-pressure airflow in the driving air pipe is interrupted, the elastic potential energy of the elastic driving spring is released to drive the dust shaking plate to swing in the opposite direction. When the dust shaking plate is reset after swinging in the opposite direction, the elastic driving spring continues to be compressed, thereby realizing the repeated back and forth swinging of the dust shaking plate, which can effectively shake off the dust on the dust shaking plate and has high dust shaking efficiency.

In the above-mentioned PLC-controlled pulse bag dust collector, a dust guide assembly is provided between the bottom of the dust shaking plate and the dust collecting hopper.

The dust guide assembly between the dust shaking plate and the dust collecting hopper can guide the dust on the dust shaking plate to the dust collecting hopper, thereby improving the dust removal efficiency.

In the above-mentioned PLC-controlled pulse bag dust collector, the dust guide assembly includes a flexible and stretchable guide filter cloth, the upper end of the guide filter cloth is connected to the bottom end of the dust shaking plate, and the lower end is connected to the dust inlet on one side of the dust collecting hopper. When the elastic potential energy generated by the compression of the elastic driving assembly drives the dust shaking plate to swing in the opposite direction, the guide filter cloth stretches out.

The dust on the shaking board can quickly enter the dust collecting hopper along the guide of the guide filter cloth, which can effectively improve the dust removal efficiency. The guide filter cloth is flexible and stretchable. When the shaking board swings back and forth, the guide filter cloth can follow the stretch and contraction without affecting its use function.

In the above-mentioned PLC-controlled pulse bag dust collector, the dust bag is arranged on the dust bag mounting plate through a fixing structure that can make the pulse air inlet end open into a circular shape. The fixing structure includes a cylindrical mounting platform arranged on the dust bag mounting plate, and the cylindrical mounting platform is provided with a mounting groove that penetrates the dust bag mounting plate. The dust bag is inserted into the mounting groove, and a flange is provided on the top of the cylindrical mounting platform. The pulse air inlet end of the dust bag is covered by the flange and fixed on the flange by a limiting sleeve. The limiting sleeve is open and adapted to the flange and covers the pulse air inlet end. The limiting sleeve is connected to the flange by a plurality of bolt and nut assemblies.

The upper part of the dust bag is inserted into the mounting groove of the cylindrical mounting table. The pulse air inlet end of the dust bag covers the flange and is fixed on the flange through a limiting sleeve. After the pulse air inlet end of the dust bag covers the flange, the limiting sleeve is embedded in the flange. The limiting sleeve covers the pulse air inlet end and the flange at the same time and is fixed by a bolt and nut assembly. The fixation is firm and the disassembly and assembly are convenient. The pulse air inlet end of the dust bag is opened into a circular shape for better air intake.

In the above-mentioned PLC-controlled pulse bag dust collector, a dust outlet channel is provided at the bottom of the dust collecting hopper, a discharge valve is provided near the end of the dust collecting hopper, the discharge valve is connected to the PLC control unit, and a bottom blowing pipe with a blowing direction toward the discharge valve is provided at the bottom of the driving air pipe.

The PLC control unit controls the opening and closing of the discharge valve to control the opening and closing of the dust outlet channel. It drives the airflow in the air pipe through the bottom blowing pipe to blow the discharge valve and the dust outlet channel, blowing off the dust attached to the discharge valve to avoid blockage and malfunction of the discharge valve, which affects its use.

In the above-mentioned PLC-controlled pulse bag dust collector, the exhaust mechanism includes an exhaust duct penetrating the outer wall of the dust collector shell and arranged in the purification chamber, and an exhaust fan connected to the exhaust duct is provided outside the dust collector shell, and the exhaust fan is connected to an exhaust pipe.

The exhaust fan sucks the dust-laden airflow from the dust removal chamber into the purification chamber through the exhaust duct. The dust in the airflow is filtered by the dust bags and blocked on the outer surface of the dust bags. The purified air is drawn out of the purification chamber by the exhaust fan and discharged through the exhaust duct.

Compared with the existing technology, the advantages of the utility model are: 1. The dust removal bag can shake off the dust remaining on the outer surface of the bag under the blowing of high-pressure pulse airflow to avoid clogging of the dust removal bag. 2. The dust shaking plate can repeatedly swing back and forth to shake off the dust to avoid dust aggregation and adhesion resulting in low dust removal efficiency. 3. The dust in the discharge valve can be shaken off in time to prevent clogging.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure provided by the utility model;

FIG2 is a schematic structural diagram of an inner wall dust shaking device;

FIG3 is a schematic diagram of the structure of a pulse dust cleaning device;

FIG. 4 is an enlarged schematic diagram of point A in FIG. 1 .

In the figure, the dust collector shell 1, the dust inlet pipe 2, the dust bag mounting plate 3, the dust bag 4, the purification chamber 5, the dust removal chamber 6, the exhaust mechanism 7, the pulse air inlet end 8, the pulse dust cleaning device 9, the dust collecting hopper 10, the inner wall dust shaking device 11, the cage frame 12, the pulse blowing pipe 13, the pulse nozzle 14, the air bag 15, the conveying pipeline 16, the electromagnetic pulse valve 17, the hinged connector 18, the dust shaking plate 19, the elastic driving component 20, the driving structure 21, the driving air pipe 22, the driving blowing pipe 23, the elastic driving spring 24, the dust guide component 25, the guide filter cloth 26, the fixing structure 27, the cylindrical mounting table 28, the mounting groove 29, the flange 30, the limit sleeve 31, the bolt and nut assembly 32, the dust outlet channel 33, the discharge valve 34, the bottom blowing pipe 35, the exhaust duct 36, the exhaust fan 37, and the exhaust duct 38.

DETAILED DESCRIPTION

As shown in Figures 1 to 3, a PLC-controlled pulse bag dust collector includes a dust collector housing 1 and a PLC control unit. A dust inlet pipe 2 is provided at the lower part of the dust collector housing 1. A dust bag mounting plate 3 is provided inside the dust collector housing 1. A plurality of dust bags 4 are evenly distributed on the dust bag mounting plate 3 of the PLC-controlled pulse bag dust collector. The dust bag mounting plate 3 of the PLC-controlled pulse bag dust collector divides the dust collector housing 1 into a purification chamber 5 and a dust removal chamber 6 respectively from top to bottom. The PLC-controlled pulse bag dust collector An exhaust mechanism 7 is provided on the side wall of the purification chamber 5. The top of the dust bag 4 of the PLC-controlled pulse bag dust collector is a pulse air inlet end 8 fixed on the dust bag mounting plate 3. A pulse cleaning device 9 is provided on the top of the dust collector housing 1. The pulse cleaning device 9 is connected to the PLC control unit. The lower end of the dust bag 4 is fixed by a cage frame 12 arranged in the dust collector housing 1. A dust collecting hopper 10 is provided at the bottom of the dust collector housing 1. An inner wall dust shaking device 11 is provided on the inner wall of the dust collector housing 1 below the dust bag 4.

In the present invention, the dust-laden airflow enters the dust removal chamber 6 inside the dust collector housing 1 through the dust inlet pipe 2, and the exhaust mechanism 7 operates to suck the dust-laden airflow from the dust removal chamber 6 into the purification chamber 5. A portion of the coarser dust particles fall into the dust collecting hopper 10 due to inertial collision, natural sedimentation, etc., and most of the finer dust particles rise with the airflow. After being filtered by the dust bag 4, the dust particles will be retained on the outer wall of the dust bag 4, and the purified gas can pass through the dust bag 4 and enter the inside of the dust bag 4 and flow upward to the purification chamber 5, and then be discharged from the purification chamber 5 by the exhaust mechanism 7. When the dust bag 4 needs to be cleaned after being used for a period of time, the pulse cleaning device 9 can spray a pulse airflow to the pulse air inlet end 8 of the dust bag 4, and the high-pressure pulse airflow makes the dust bag 4 is deformed and shaken, so that the dust remaining on the outer surface of the dust bag 4 is shaken off. At the same time, due to the reverse airflow, the dust remaining on the surface of the dust bag 4 can be completely cleaned, and the shaken dust falls into the dust hopper 10. The inner wall dust shaking device 11 on the inner wall of the dust collector shell 1 can shake the dust attached to the inner wall into the dust hopper 10, avoiding blockage and dust discharge caused by dust accumulation. The pulse cleaning device 9 is connected to the PLC control unit, and the PLC control unit can be connected to the industrial intelligent gateway, that is, the real-time data in the pulse cleaning device 9 can be collected in real time through the gateway, and then timely operation and maintenance operations can be performed. The PLC control unit can be remotely maintained only on the computer, which improves the efficiency of equipment maintenance and reduces maintenance costs.

Specifically, in combination with Figures 1 and 3, the pulse cleaning device 9 includes a pulse blowing pipe 13 arranged at the top of the dust collector shell 1, the pulse blowing pipe 13 is arranged horizontally, and a plurality of pulse nozzles 14 connected to the pulse blowing pipe 13 are arranged at the bottom of the pulse blowing pipe 13, and the blowing directions of the plurality of pulse nozzles 14 correspond one by one to the pulse air inlet ends 8 of the plurality of dust bags 4, respectively. An air bag 15 is arranged on the top of the dust collector shell 1, and the air bag 15 is connected to the pulse blowing pipe 13 through a conveying pipeline 16, and the air bag 15 is connected to an external air compressor, and an electromagnetic pulse valve 17 is arranged in the conveying pipeline 16, and the electromagnetic pulse valve 17 is connected to the PLC control unit.

When the dust bag 4 needs to be cleaned, the PLC control unit controls the electromagnetic pulse valve 17 to open, and the high-pressure airflow in the air bag 15 enters the pulse blowing pipe 13 and pulse-blows the pulse air inlet end 8 of the dust bag 4 through the pulse nozzle 14. The high-pressure pulse airflow causes the dust bag 4 to deform and shake, so that the dust remaining on the outer surface of the dust bag 4 is shaken off. At the same time, due to the reverse airflow, the dust remaining on the surface of the dust bag 4 can be completely cleaned, which can effectively prevent the dust bag 4 from being blocked and affecting the filtering effect and efficiency.

Specifically, in combination with Figures 1 and 2, the inner wall dust shaking device 11 includes dust shaking plates 19 hinged on the inner walls of the dust collector shell 1 through hinged connections 18, and an elastic driving component 20 that can be compressed and provides elastic potential energy is provided between the bottom surface of the dust shaking plate 19 and the inner wall of the dust collector shell 1. The dust shaking plates 19 on the opposite sides are cone-shaped under the action of the elastic driving component 20. The dust collector shell 1 is also provided with a driving structure 21 that can intermittently drive the dust shaking plate 19 to swing toward the inner wall side of the dust collector shell 1 with the hinged connection 18 as the axis to compress the elastic driving component 20.

The ash shaking plate 19 is hinged on the inner wall of the dust collector housing 1 and can swing with the hinged connecting part 18 as the axis. The elastic driving component 20 makes the cross-section of the ash shaking plates 19 on both sides conical, which can guide the dust, and the driving structure 21 can intermittently drive the ash shaking plate 19 to swing toward the inner wall side of the dust collector housing 1 while compressing the elastic driving component 20. The elastic driving component 20 is compressed to generate elastic potential energy, which in turn drives the ash shaking plate 19 to swing in the opposite direction. The ash shaking plate 19 repeatedly swings back and forth and generates vibration to shake off the dust on the ash shaking plate 19 into the dust collecting hopper 10, thereby avoiding blockage and dust discharge problems caused by dust accumulation.

Preferably, in combination with Figures 1 and 2, the driving structure 21 includes a driving air pipe 22 respectively penetrating the dust bag mounting plate 3 and the cage frame 12 and connected to the pulse blowing pipe 13, and a plurality of driving blowing pipes 23 inclined toward the dust shaking plate 19 are respectively distributed on the lower outer wall of the driving air pipe 22.

The high-pressure airflow in the pulse blowing pipe 13 enters into the driving air pipe 22, and pulse-blows the ash shaking plate 19 through the driving blowing pipe 23 inclined toward the ash shaking plate 19. The pulsed high-pressure airflow can intermittently drive the ash shaking plate 19 to swing toward the inner wall of the dust collector housing 1, and the elastic driving component 20 is compressed during the swinging of the ash shaking plate 19.

Preferably, as shown in FIG. 1 and FIG. 2 , the elastic driving assembly 20 includes a plurality of elastic driving springs 24 disposed on the bottom surface of the dust shaking plate 19 and distributed along the length direction of the dust shaking plate 19 .

Driven by the high-pressure airflow, the dust shaking plate 19 swings toward the inner wall of the dust collector housing 1 with the hinged connection part 18 as the axis, and the elastic driving spring 24 on the bottom of the dust shaking plate 19 is compressed to generate elastic potential energy. When the high-pressure airflow in the driving air pipe 22 is interrupted, the elastic potential energy of the elastic driving spring 24 is released to drive the dust shaking plate 19 to swing in the opposite direction. When the dust shaking plate 19 is reset after the reverse swing, the elastic driving spring 24 is continuously compressed, thereby realizing the repeated back and forth swinging of the dust shaking plate 19, which can effectively shake off the dust on the dust shaking plate 19, and the dust shaking efficiency is high.

Preferably, as shown in FIG. 1 and FIG. 2 , a dust guide assembly 25 is provided between the bottom of the dust shaking plate 19 and the dust collecting hopper 10 .

The dust guide assembly 25 between the dust shaking plate 19 and the dust collecting hopper 10 can guide the dust on the dust shaking plate 19 into the dust collecting hopper 10, thereby improving the dust removal efficiency.

Specifically, as shown in Figures 1 and 2, the dust guide assembly 25 includes a flexible and stretchable guide filter cloth 26, the upper end of the guide filter cloth 26 is connected to the bottom end of the dust shaking plate 19, and the lower end is connected to the dust inlet on one side of the dust collecting hopper 10. When the elastic potential energy generated by the compression of the elastic driving assembly 20 drives the dust shaking plate 19 to swing in the opposite direction, the guide filter cloth 26 stretches out.

The dust on the ash shaking plate 19 can quickly enter the dust collecting hopper 10 along the guide of the guide filter cloth 26, which can effectively improve the dust removal efficiency. The guide filter cloth 26 has the characteristics of flexibility and stretchability. When the ash shaking plate 19 swings back and forth, the guide filter cloth 26 can follow the stretching and contraction without affecting its use function.

Preferably, in combination with Figures 1 and 4, the dust bag 4 is arranged on the dust bag mounting plate 3 through a fixing structure 27 that can make the pulse air inlet end 8 open into a circular shape. The fixing structure 27 includes a cylindrical mounting platform 28 arranged on the dust bag mounting plate 3, and the cylindrical mounting platform 28 is provided with a mounting groove 29 that penetrates the dust bag mounting plate 3. The dust bag 4 is inserted into the mounting groove 29, and a flange 30 is provided on the top of the cylindrical mounting platform 28. The pulse air inlet end 8 of the dust bag 4 is covered on the flange 30 and fixed on the flange 30 through a limiting sleeve 31. The limiting sleeve 31 is open and adapted to the flange 30 and covers the pulse air inlet end 8. The limiting sleeve 31 is connected to the flange 30 by a plurality of bolt and nut assemblies 32.

The upper part of the dust bag 4 is inserted into the mounting groove 29 of the cylindrical mounting platform 28. The pulse air inlet end 8 of the dust bag 4 covers the flange 30 and is fixed on the flange 30 by a limiting sleeve 31. After the pulse air inlet end 8 of the dust bag 4 covers the flange 30, the limiting sleeve 31 is embedded in the flange 30. The limiting sleeve 31 covers the pulse air inlet end 8 and the flange 30 at the same time and is fixed by a bolt and nut assembly 32. The fixation is firm and the disassembly and assembly are convenient. The pulse air inlet end 8 of the dust bag 4 is open into a circular shape for better air intake.

Specifically, in combination with Figures 1 and 2, a dust outlet channel 33 is provided at the bottom of the dust collecting hopper 10, and a discharge valve 34 is provided at the end of the dust outlet channel 33 near the dust collecting hopper 10. The discharge valve 34 is connected to the PLC control unit, and a bottom blowing pipe 35 with a blowing direction toward the discharge valve 34 is provided at the bottom of the driving air pipe 22.

The PLC control unit controls the opening and closing of the discharge valve 34 to control the opening and closing of the dust outlet channel 33, and drives the airflow in the air pipe 22 to blow the discharge valve 34 and the dust outlet channel 33 through the bottom blowing pipe 35, so as to blow off the dust attached to the discharge valve 34, thereby avoiding blockage and failure of the discharge valve 34, which would affect its use.

Specifically, as shown in Figure 1, the exhaust mechanism 7 includes an exhaust duct 36 that passes through the outer wall of the dust collector shell 1 and is arranged in the purification chamber 5. The outside of the dust collector shell 1 is provided with an exhaust fan 37 connected to the exhaust duct 36, and the exhaust fan 37 is connected to an exhaust pipe 38.

The exhaust fan 37 operates through the exhaust duct 36 to suck the dust-laden airflow from the dust removal chamber 6 into the purification chamber 5. The dust in the airflow is filtered by the dust removal bag 4 and blocked on the outer surface of the dust removal bag 4. The purified air is drawn out of the purification chamber 5 by the exhaust fan 37 and discharged through the exhaust duct 38.

The working principle of the utility model is as follows: the dust-laden air flow enters the dust removal chamber 6 inside the dust collector housing 1 through the dust inlet pipe 2, and the exhaust mechanism 7 operates to suck the dust-laden air flow from the dust removal chamber 6 into the purification chamber 5. A part of the coarser dust particles fall into the dust collecting hopper 10 due to inertial collision, natural sedimentation and the like, and most of the finer dust particles rise with the air flow. After being filtered by the dust bag 4, the dust particles will be retained on the outer wall of the dust bag 4, and the purified gas can pass through the dust bag 4 and enter the inside of the dust bag 4 and flow upward to the purification chamber 5, and then be discharged from the purification chamber 5 by the exhaust mechanism 7. When the dust bag 4 needs to be cleaned after being used for a period of time, the pulse cleaning device 9 can spray a pulse airflow to the pulse air inlet end 8 of the dust bag 4, and the high-pressure pulse airflow makes the dust bag 4 The dust bag 4 is deformed and shaken, so that the dust remaining on the outer surface of the dust bag 4 is shaken off. At the same time, due to the reverse airflow, the dust remaining on the surface of the dust bag 4 can be completely cleaned, and the shaken dust falls into the dust hopper 10. The inner wall shaking device 11 on the inner wall of the dust collector shell 1 can shake the dust attached to the inner wall into the dust hopper 10, avoiding blockage and dust discharge caused by dust accumulation. The pulse cleaning device 9 is connected to the PLC control unit, and the PLC control unit can be connected to the industrial intelligent gateway. That is, the real-time data in the pulse cleaning device 9 can be collected in real time through the gateway, and timely operation and maintenance operations can be performed. The PLC control unit can be remotely maintained only on the computer, which improves the efficiency of equipment maintenance and reduces maintenance costs.

When the dust bag 4 needs to be cleaned, the PLC control unit controls the electromagnetic pulse valve 17 to open, and the high-pressure airflow in the air bag 15 enters the pulse blowing pipe 13 and pulse-blows the pulse air inlet end 8 of the dust bag 4 through the pulse nozzle 14. The high-pressure pulse airflow causes the dust bag 4 to deform and shake, so that the dust remaining on the outer surface of the dust bag 4 is shaken off. At the same time, due to the reverse airflow, the dust remaining on the surface of the dust bag 4 can be completely cleaned, which can effectively prevent the dust bag 4 from being blocked and affecting the filtering effect and efficiency.

The dust-shaking plate 19 is hinged on the inner wall of the dust collector housing 1 and can swing with the hinged connecting piece 18 as the axis. The elastic driving component 20 makes the cross-section of the dust-shaking plates 19 on both sides be cone-shaped, which can guide the dust, and the driving structure 21 can intermittently drive the dust-shaking plate 19 to swing toward the inner wall of the dust collector housing 1 while compressing the elastic driving component 20. The elastic driving component 20 is compressed to generate elastic potential energy, which drives the dust-shaking plate 19 to swing in the opposite direction. The dust-shaking plate 19 repeatedly swings back and forth to generate vibration to shake the dust on the dust-shaking plate 19 into the dust collecting hopper 10, so as to avoid blockage and dust discharge disorder caused by dust accumulation;

The high-pressure airflow in the pulse blowing pipe 13 enters the driving air pipe 22, and pulses the ash shaking plate 19 through the driving blowing pipe 23 inclined toward the ash shaking plate 19. The pulsed high-pressure airflow can intermittently drive the ash shaking plate 19 to swing toward the inner wall of the dust collector housing 1, and the elastic driving component 20 is compressed during the swinging of the ash shaking plate 19.

The dust-shaking plate 19 is driven by the high-pressure airflow and swings toward the inner wall of the dust collector housing 1 with the hinged connection 18 as the axis. The elastic driving spring 24 on the bottom of the dust-shaking plate 19 is compressed to generate elastic potential energy. When the high-pressure airflow in the driving air pipe 22 is interrupted, the elastic potential energy of the elastic driving spring 24 is released to drive the dust-shaking plate 19 to swing in the opposite direction. When the dust-shaking plate 19 is reset after the reverse swing, the elastic driving spring 24 is continuously compressed, thereby realizing the repeated back-and-forth swinging of the dust-shaking plate 19, which can effectively shake off the dust on the dust-shaking plate 19, and the dust-shaking efficiency is high.

The dust on the dust shaking plate 19 can quickly enter the dust collecting hopper 10 along the guide of the guide filter cloth 26, which can effectively improve the dust removal efficiency. The guide filter cloth 26 has the characteristics of flexibility and stretchability. When the dust shaking plate 19 swings back and forth, the guide filter cloth 26 can follow the stretching and contraction without affecting its use function.

The upper part of the dust bag 4 is inserted into the mounting groove 29 of the cylindrical mounting platform 28. The pulse air inlet end 8 of the dust bag 4 covers the flange 30 and is fixed on the flange 30 through the limiting clamp 31. After the pulse air inlet end 8 of the dust bag 4 covers the flange 30, the limiting clamp 31 is clamped on the flange 30. The limiting clamp 31 covers the pulse air inlet end 8 and the flange 30 at the same time, and is fixed by the bolt and nut assembly 32. The fixing is firm and the disassembly and assembly are convenient. The pulse air inlet end 8 of the dust bag 4 is open in a round shape for better air intake.

The PLC control unit controls the opening and closing of the discharge valve 34 to control the opening and closing of the dust outlet channel 33, and drives the airflow in the air pipe 22 to blow the discharge valve 34 and the dust outlet channel 33 through the bottom blowing pipe 35, so as to blow off the dust attached to the discharge valve 34, thereby avoiding the blockage and failure of the discharge valve 34, which affects its use;

The exhaust fan 37 operates through the exhaust duct 36 to suck the dust-laden airflow from the dust removal chamber 6 into the purification chamber 5. The dust in the airflow is filtered by the dust removal bag 4 and blocked on the outer surface of the dust removal bag 4. The purified air is drawn out of the purification chamber 5 by the exhaust fan 37 and discharged through the exhaust duct 38.

The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Although this article uses more dust collector shell 1, dust inlet pipe 2, dust bag mounting plate 3, dust bag 4, purification chamber 5, dust removal chamber 6, exhaust mechanism 7, pulse air inlet end 8, pulse dust cleaning device 9, dust collecting hopper 10, inner wall dust shaking device 11, cage frame 12, pulse blowing pipe 13, pulse nozzle 14, air bag 15, conveying pipeline 16, electromagnetic pulse valve 17, hinged connector 18, dust shaking plate 19, elastic drive component 20, drive structure 21, drive air pipe 22, drive blowing pipe 23, Elastic drive spring 24, dust guide assembly 25, guide filter cloth 26, fixing structure 27, cylindrical mounting platform 28, mounting groove 29, flange 30, limit sleeve 31, bolt and nut assembly 32, dust outlet channel 33, discharge valve 34, bottom blowing pipe 35, exhaust duct 36, exhaust fan 37, exhaust duct 38, etc., these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims (8)

1. A pulse bag dust collector controlled by a PLC, comprising a dust collector housing (1) and a PLC control unit, characterized in that a dust inlet pipe (2) is provided at the lower part of the dust collector housing (1), a dust bag mounting plate (3) is provided in the dust collector housing (1), a plurality of dust bags (4) are evenly distributed on the dust bag mounting plate (3), the dust bag mounting plate (3) divides the dust collector housing (1) into a purification chamber (5) and a dust removal chamber (6) at the upper and lower parts respectively, an exhaust mechanism (7) is provided on the side wall of the purification chamber (5), and the top of the dust bag (4) is fixed on the dust removal chamber (6). A pulse air inlet (8) is provided on the dust bag mounting plate (3); a pulse dust cleaning device (9) is provided on the top of the dust collector housing (1); the pulse dust cleaning device (9) is connected to a PLC control unit; the lower end of the dust bag (4) is fixed by a cage frame (12) provided in the dust collector housing (1); a dust collecting hopper (10) is provided at the bottom of the dust collector housing (1); an inner wall dust shaking device (11) is provided on the inner wall of the dust collector housing (1) below the dust bag (4); the pulse dust cleaning device (9) includes a pulse blowing pipe (13) provided at the top of the dust collector housing (1); ), the pulse blowing pipe (13) is arranged horizontally, and a plurality of pulse nozzles (14) connected to the pulse blowing pipe (13) are arranged at the bottom of the pulse blowing pipe (13), and the blowing directions of the plurality of pulse nozzles (14) correspond one by one to the pulse air inlet ends (8) of the plurality of dust removal bags (4), respectively; an air bag (15) is arranged on the top of the dust collector housing (1), and the air bag (15) is connected to the pulse blowing pipe (13) through a conveying pipeline (16), and the air bag (15) is connected to an external air compressor, and an electromagnetic pulse valve (17) is arranged in the conveying pipeline (16), and the The electromagnetic pulse valve (17) is connected to a PLC control unit, and the inner wall dust shaking device (11) comprises dust shaking plates (19) respectively hinged on the inner wall of the dust collector housing (1) through hinged connecting parts (18). An elastic driving component (20) that can be compressed and provide elastic potential energy is provided between the bottom surface of the dust shaking plate (19) and the inner wall of the dust collector housing (1). The dust collector housing (1) is also provided with a driving structure (21) that can intermittently drive the dust shaking plate (19) to swing toward the inner wall side of the dust collector housing (1) with the hinged connecting part (18) as the axis to compress the elastic driving component (20). 2. The PLC-controlled pulse bag dust collector according to claim 1 is characterized in that the driving structure (21) includes a driving air pipe (22) respectively penetrating the dust bag mounting plate (3) and the cage frame (12) and connected to the pulse blowing pipe (13), and a plurality of driving blowing pipes (23) inclined toward the dust shaking plate (19) are respectively distributed on the lower outer wall of the driving air pipe (22). 3. The PLC-controlled pulse bag dust collector according to claim 1 is characterized in that the elastic drive component (20) includes a plurality of elastic drive springs (24) arranged on the bottom surface of the dust shaking plate (19) and distributed along the length direction of the dust shaking plate (19). 4. The PLC-controlled pulse bag dust collector according to claim 1 is characterized in that a dust guide component (25) is provided between the bottom of the dust shaking plate (19) and the dust collecting hopper (10). 5. The PLC-controlled pulse bag dust collector according to claim 4 is characterized in that the dust guide component (25) includes a flexible and stretchable guide filter cloth (26), the upper end of the guide filter cloth (26) is connected to the bottom end of the dust shaking plate (19), and the lower end is connected to the dust inlet on one side of the dust collecting hopper (10), and when the elastic potential energy generated by the compression of the elastic driving component (20) drives the dust shaking plate (19) to swing in the opposite direction, the guide filter cloth (26) stretches. 6. The PLC-controlled pulse bag dust collector according to claim 1 is characterized in that the dust bag (4) is arranged on the dust bag mounting plate (3) through a fixing structure (27) that can open the pulse air inlet end (8) into a circular shape, and the fixing structure (27) includes a cylindrical mounting platform (28) arranged on the dust bag mounting plate (3), and the cylindrical mounting platform (28) is provided with a mounting groove (29) that penetrates the dust bag mounting plate (3), and the The dust bag (4) is inserted into the mounting groove (29), and a flange (30) is provided on the top of the cylindrical mounting platform (28). The pulse air inlet end (8) of the dust bag (4) is covered by the flange (30) and is fixed on the flange (30) by a limiting sleeve (31). The limiting sleeve (31) is open and adapted to the flange (30) and covers the pulse air inlet end (8). The limiting sleeve (31) is connected to the flange (30) by a plurality of bolt and nut assemblies (32). 7. The PLC-controlled pulse bag dust collector according to claim 2 is characterized in that a dust outlet channel (33) is provided at the bottom of the dust collecting hopper (10), a discharge valve (34) is provided at the end of the dust outlet channel (33) near the dust collecting hopper (10), the discharge valve (34) is connected to the PLC control unit, and a bottom blowing pipe (35) with a blowing direction toward the discharge valve (34) is provided at the bottom of the driving air pipe (22). 8. The PLC-controlled pulse bag dust collector according to claim 1 is characterized in that the exhaust mechanism (7) includes an exhaust duct (36) penetrating the outer wall of the dust collector shell (1) and arranged in the purification chamber (5), and an exhaust fan (37) connected to the exhaust duct (36) is provided outside the dust collector shell (1), and the exhaust fan (37) is connected to an exhaust pipe (38).