Filter bag device with self-cleaning function

Abstract

The application relates to the technical field of carbon black production devices, and discloses a filter bag device with a self-cleaning function, which comprises a filter shell, a controller is fixedly installed at the upper surface right end of the filter shell, and a self-cleanable filter bag structure is arranged in the filter shell. The filter bag device with the self-cleaning function can drive the filter bag needing to be cleaned to move upwards through the cooperation of the fixed rod, the electric telescopic rod, the electromagnet and the iron block, and can fall downwards after moving upwards; and when the filter bag falls downwards, the cooperation of the iron block, the annular fixing frame, the buffer spring, the annular mounting plate, the annular partition plate, the annular limiting plate and the supporting column can drive the filter bag to continuously vibrate, so that the carbon black adhered to the bottom of the filter bag continuously falls downwards, the filter holes of the filter bag are prevented from being blocked due to excessive adhesion of the carbon black on the bottom surface of the filter bag, and the filtering efficiency of the filter bag is affected.

Description

Technical Field

[0001] This invention relates to the field of carbon black production equipment technology, specifically a filter bag with a self-cleaning function. Background Technology

[0002] Carbon black is a black powdery substance produced by incomplete combustion or pyrolysis in the gas phase. Its main component is elemental carbon, and it contains small amounts of oxygen, hydrogen and sulfur. Carbon black particles are approximately spherical. In the carbon black production process, filter bags are used to separate carbon black from residual combustion gases. Filter bags are also called bag filters.

[0003] Existing filter bags typically allow flue gas containing carbon black to enter the bag filter. After being filtered by the filter assembly, the carbon black falls into the collection hopper. Since the inner wall of the collection hopper is sloping, it has an adhesive force on the carbon black, and some of the carbon black adheres to the inner wall of the collection hopper. The drive component rotates through the drive connection assembly, thereby driving the cleaning component to make a circular motion along the inner wall of the collection hopper to clean the inner wall of the collection hopper and achieve the removal of the adhered carbon black.

[0004] However, in actual use, after long-term use, a large amount of carbon black will adhere to the bottom of the filter bag and the contact surface with the carbon black-containing gas, causing blockage of the filter bag pores. If it is not cleaned in time, it will affect the normal operation of the filter bag and reduce the service life of the filter bag. If it is removed for cleaning, the carbon black at the bottom of the filter bag will be removed and cannot be reused, resulting in waste. In view of this, we propose a filter bag with a self-cleaning function. Summary of the Invention

[0005] The purpose of this invention is to provide a filter bag device with a self-cleaning function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a filter bag device with a self-cleaning function, comprising a filter housing, an air inlet pipe fixedly installed at the left end of the filter housing, a discharge pipe fixedly installed at the bottom end of the filter housing, an exhaust pipe fixedly installed on the upper surface of the filter housing, and a controller fixedly installed at the right end of the upper surface of the filter housing. The controller can control the electrical components inside the filter bag device. The filter housing contains a self-cleaning filter bag structure, which includes:

[0007] An annular fixing frame is fixedly installed on the inner wall surface of the filter housing. A buffer spring is fixedly installed at the upper end of the annular fixing frame. An annular mounting plate is fixedly installed at the top end of the buffer spring. An annular partition is fixedly installed on the bottom surface of the annular mounting plate. The annular partition can seal the gap between the annular fixing frame and the annular mounting plate to prevent carbon black from entering the gap and affecting the compression of the buffer spring.

[0008] A filter bag is disposed above an annular partition. An iron block is fixedly installed at the bottom of the inside of the filter bag, and a reinforcing rope is fixedly installed inside the filter bag to strengthen the connection between the iron block and the filter bag.

[0009] A support column is provided at the upper end of the annular partition, and an annular limiting plate is provided on the upper surface of the support column. The support column, annular partition, and annular limiting plate can limit the installation of the filter bag.

[0010] A fixed rod is fixedly installed inside the filter housing. An electric telescopic rod is fixedly installed at the center of the bottom surface of the fixed rod. An electromagnet is fixedly installed at the bottom end of the electric telescopic rod. When the electric telescopic rod is started, it can drive the electromagnet to move linearly in the up and down direction.

[0011] Preferably, the electromagnet is located directly above the iron block, and when the electromagnet is energized, it can magnetically attract the iron block.

[0012] Preferably, the outer wall of the annular partition is in contact with the inner wall of the annular fixing frame.

[0013] Preferably, the bottom end of the support column penetrates the upper surface of the filter bag and is fixedly connected to the upper surface of the annular partition, and the annular limiting plate is fixedly installed on the upper end of the support column by bolts.

[0014] Preferably, an air collecting hood is fixedly installed at the top of the inside of the filter housing, and a cross-shaped fixing frame is provided below the air collecting hood. A motor is fixedly installed at the center of the upper surface of the cross-shaped fixing frame, and a fan is fixedly installed through the output shaft of the motor through the upper surface of the cross-shaped fixing frame. When the motor is started, it can drive the fan to rotate and generate airflow.

[0015] Preferably, the outer wall of the cross-shaped fixing bracket is fixedly connected to the inner wall of the filter housing.

[0016] Preferably, the filter bag is provided with a buffer rod at the bottom end, and a groove is provided at the center of the upper surface of the buffer rod. A limit spring is fixedly installed on the bottom surface of the groove, a limit post is fixedly installed on the top end of the limit spring, and a buffer rubber plate is fixedly installed on the upper surface of the limit post.

[0017] Preferably, both ends of the buffer rod are fixedly connected to the inner wall of the filter housing.

[0018] Preferably, the outer wall of the limiting post is in contact with the inner wall of the groove, and the upper surface of the buffer rubber plate is in contact with the bottom surface of the iron block.

[0019] Compared with the prior art, the present invention provides a filter bag with a self-cleaning function, which has the following beneficial effects:

[0020] 1. This filter bag cleaner with a self-cleaning function uses a fixed rod, an electric telescopic rod, an electromagnet, and an iron block to move the filter bag to be cleaned upwards. After moving upwards, it falls downwards. The iron block, annular fixing frame, buffer spring, annular mounting plate, annular partition, annular limiting plate, and support column work together to cause the filter bag to vibrate continuously as it falls. This causes the carbon black adhering to the bottom of the filter bag to fall off continuously, preventing excessive carbon black from adhering to the bottom surface of the filter bag and clogging the filter pores, thus affecting the filtration efficiency. Simultaneously, the carbon black adhering to the bottom of the filter bag falls to the discharge pipe for reuse, avoiding waste.

[0021] 2. This filter bag with self-cleaning function can limit the movement distance of the iron block through the cooperation of the buffer rod, groove, limit spring, limit post and buffer rubber plate, so as to avoid the iron block moving too much when falling downwards, which would damage the filter bag and affect the use of the filter bag.

[0022] 3. This filter bag cleaner with self-cleaning function, through the combination of the cross-shaped fixing frame, motor and fan, can blow low-speed air downwards during the cleaning operation of the filter bag, blowing off the shaken carbon black and preventing it from adhering to the bottom of the filter bag again and causing secondary blockage. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the front cross-section of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure at point A of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure at point B of the present invention;

[0027] Figure 5 This is a schematic diagram of the internal structure of the buffer rod of the present invention.

[0028] In the diagram: 1. Filter housing; 2. Inlet pipe; 3. Outlet pipe; 4. Exhaust pipe; 5. Controller; 6. Self-cleaning filter bag structure; 601. Annular fixing frame; 602. Buffer spring; 603. Annular mounting plate; 604. Annular partition; 605. Filter bag; 606. Support column; 607. Annular limiting plate; 608. Bolt; 609. Iron block; 610. Reinforcing rope; 611. Fixing rod; 612. Electric telescopic rod; 613. Electromagnet; 701. Air collector hood; 702. Cross fixing frame; 703. Motor; 704. Fan; 801. Buffer rod; 802. Groove; 803. Limiting spring; 804. Limiting column; 805. Buffer rubber plate. Detailed Implementation

[0029] like Figures 1-5 As shown, the present invention provides a technical solution: a filter bag with a self-cleaning function, including a filter housing 1, an air inlet pipe 2 fixedly installed at the left end of the filter housing 1, a discharge pipe 3 fixedly installed at the bottom end of the filter housing 1, a solenoid valve fixedly installed on the outside of the discharge pipe 3, an exhaust pipe 4 fixedly installed on the upper surface of the filter housing 1, and a controller 5 fixedly installed on the right end of the upper surface of the filter housing 1. The controller 5 can control the electrical components installed inside the filter bag. Air can be introduced through the air inlet pipe 2. The heated carbon black-containing gas will float upward under the action of the thrust. When the gas passes through the filter bag 605, the filter bag 605 will filter the carbon black inside the gas. The filtered gas will continue to float upward and be discharged through the exhaust pipe 4. The carbon black filtered by the filter bag 605 will fall downward and be collected at the discharge pipe 3. When it is necessary to remove the carbon black, the solenoid valve is opened, which will allow the carbon black to fall downward and be discharged. This is a prior art in the field and will not be described in detail here.

[0030] The filter housing 1 has a self-cleaning filter bag structure 6 inside. The self-cleaning filter bag structure 6 includes: an annular fixing frame 601, a filter bag 605, a support column 606, and a fixing rod 611. The annular fixing frame 601 is fixedly installed on the inner wall surface of the filter housing 1. A buffer spring 602 is fixedly installed at the upper end of the annular fixing frame 601. An annular mounting plate 603 is fixedly installed at the top of the buffer spring 602. When the annular mounting plate 603 is compressed downward, it will simultaneously compress the buffer spring 602 downward, causing the buffer spring to... The elastic potential energy generated by 602 buffers and offsets the pressure. An annular partition 604 is fixedly installed on the bottom surface of the annular mounting plate 603. The outer wall of the annular partition 604 fits against the inner wall of the annular fixing frame 601. The annular partition 604 can move synchronously with the annular mounting plate 603 and seals the gap between the annular mounting plate 603 and the annular fixing frame 601 to prevent carbon black from entering the gap and adhering to the surface of the buffer spring 602 during the filtration process, thus affecting the compression of the buffer spring 602.

[0031] A filter bag 605 is positioned above the annular partition 604. The edges of the filter bag 605 are folded at the top, effectively enhancing its resistance to falling. An iron block 609 is fixedly installed at the bottom of the filter bag 605. When the iron block 609 moves downwards, it pulls the filter bag 605 downwards. A reinforcing rope 610 is fixedly installed inside the filter bag 605, and is fixedly connected to the outer wall of the iron block 609. This effectively prevents the iron block 609 from tearing at the connection point with the filter bag 605 during its descent, thus affecting the subsequent performance of the filter bag 605. A support column 606 is positioned on the annular partition 604. At the upper end, the bottom end of the support column 606 passes through the upper surface of the filter bag 605 and is fixedly connected to the upper surface of the annular partition 604. The support column 606 can limit the installation of the filter bag 605. An annular limiting plate 607 is provided on the upper surface of the support column 606. The annular limiting plate 607 is fixedly installed on the upper end of the support column 606 by bolts 608. The filter bag 605 can be clamped and limited by the cooperation of the annular limiting plate 607, the support column 606 and the bolts 608. When the filter bag 605 needs to be disassembled, replaced or cleaned, the bolts 608 can be unscrewed to fix the annular limiting plate 607, so that the filter bag 605 can be directly removed, which is simple to operate.

[0032] A fixed rod 611 is fixedly installed inside the filter housing 1. An electric telescopic rod 612 is fixedly installed at the center of the bottom surface of the fixed rod 611. An electromagnet 613 is fixedly installed at the bottom end of the electric telescopic rod 612. The electromagnet 613 is located directly above the iron block 609. When the electromagnet 613 is energized, it generates magnetic force. When the electric telescopic rod 612 is started, it can drive the electromagnet 613 to move linearly up and down. The electric telescopic rod 612 can be started to move the electromagnet 613 downward to make it stick to the upper surface of the iron block 609. At this time, the electromagnet 613 is energized to generate magnetic force to magnetically attract the iron block 609. Then the electric telescopic rod 612 is started to move the electromagnet 613 and the iron block 609 upward, and at the same time, the filter bag 605 is pulled upward. When the electric telescopic rod 612 has moved a distance... When the filter bag is at its highest point, the energization of the electromagnet 613 is stopped, releasing the attraction to the iron block 609. The iron block 609 then falls freely under its own weight, causing the filter bag 605 to reset downwards. During the descent, the iron block 609 and filter bag 605 vibrate continuously at the lowest point thanks to the cooperation of the annular mounting plate 603 and the buffer spring 602. This vibration shakes off any carbon black adhering to the bottom of the filter bag 605, preventing excessive carbon black buildup that could clog the filter pores and affect its filtration efficiency. The electric telescopic rod 612 and the electromagnet 613 can be pre-programmed via PLC; this is a simple PLC control technique and will not be elaborated upon further.

[0033] An air collecting hood 701 is fixedly installed at the top of the interior of the filter housing 1. A cross-shaped fixing bracket 702 is provided below the air collecting hood 701. The outer wall of the cross-shaped fixing bracket 702 is fixedly connected to the inner wall of the filter housing 1. A motor 703 is fixedly installed at the center of the upper surface of the cross-shaped fixing bracket 702. A fan 704 is fixedly installed through the upper surface of the cross-shaped fixing bracket 702. When the motor 703 starts, it can drive the fan 704 to rotate. When the motor 703 rotates forward, it causes the fan 704 to blow air upward, which draws the gas inside the filter housing 1 and accelerates the filtration efficiency of carbon black. When the motor 703 rotates in reverse, it causes the fan 704 to blow air downward. When rotating at low speed, it blows out low-speed air downward. When cleaning the filter bag 605, it can blow the shaken carbon black downward, preventing the carbon black from floating in the air after being shaken off and adhering to the bottom of the filter bag 605 again, which would cause secondary blockage.

[0034] A buffer rod 801 is provided at the bottom of the filter bag 605. Both ends of the buffer rod 801 are fixedly connected to the inner wall of the filter housing 1. A groove 802 is provided at the center of the upper surface of the buffer rod 801. A limit spring 803 is fixedly installed on the bottom surface of the groove 802. A limit post 804 is fixedly installed on the top of the limit spring 803. When the limit post 804 is subjected to downward pressure, it will compress the limit spring 803 simultaneously to generate elastic potential energy. The outer wall of the limit post 804 fits against the inner wall of the groove 802. The inner wall of the groove 802 guides and limits the movement of the limit post 804. This allows the limiting post 804 to move only in a straight line in the up and down direction. A buffer rubber plate 805 is fixedly installed on the upper surface of the limiting post 804. The upper surface of the buffer rubber plate 805 is in contact with the bottom surface of the iron block 609. The buffer rubber plate 805 can protect the limiting post 804 and the iron block 609 and prevent them from being damaged by hard collision. The buffer rod 801, the limiting spring 803, the limiting post 804 and the buffer rubber plate 805 can limit the movable distance of the iron block 609 and prevent the iron block 609 from moving too far downward, which would damage the filter bag 605.

[0035] In this invention, during use, the motor 703 can be started to drive the fan 704 to rotate and extract the gas entering the filter housing 1, accelerating the rate at which the carbon black-containing gas passes through the filter bag 605, thereby enhancing the filtration rate of the filter bag 605. When the filter bag 605 has been used for a long time and a large amount of carbon black adheres to the bottom, affecting the filtration efficiency of the filter bag 605, the electric telescopic rod 612 can be started to drive the electromagnet 613 downward to move it to be in contact with the upper surface of the iron block 609. At this time, the electromagnet 613 is energized to generate magnetic force to magnetically attract the iron block 609. Then, the electric telescopic rod 612 is started to move upward to pull the filter bag 605 upward. When the electric telescopic rod 612 reaches the uppermost distance that it can move, the energization of the electromagnet 613 is stopped, allowing the iron block 609 to fall freely downward under its own gravity, thereby driving the filter bag 605 to return to its original position. When the iron block 609 and the filter bag 605 are in the lower position... During the descent, the annular mounting plate 603 and the buffer spring 602 work together to cause the iron block 609 and the filter bag 605 to vibrate continuously when they reach the lowest point. This shakes off the carbon black adhering to the bottom of the filter bag 605 for cleaning, allowing the carbon black adhering to the bottom of the filter bag 605 to fall into the discharge pipe 3 for reuse, avoiding waste. At the same time, it prevents excessive carbon black from adhering to the bottom of the filter bag 605, which could clog the filter pores and affect the filtration efficiency of the filter bag 605. During the cleaning process, the motor 703 can be started to reverse at low speed, driving the fan 704 to blow low-speed air downwards, blowing the shaken-off carbon black downwards, preventing the carbon black from floating in the air and adhering to the bottom of the filter bag 605 again. The buffer rod 801, the limit spring 803, the limit post 804, and the buffer rubber plate 805 limit the movable distance of the iron block 609, preventing the iron block 609 from falling too far downwards and damaging the filter bag 605.

[0036] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A filter bag device with a self-cleaning function, comprising a filter housing (1), wherein an air inlet pipe (2) is fixedly installed at the left end of the filter housing (1), a discharge pipe (3) is fixedly installed at the bottom end of the filter housing (1), an exhaust pipe (4) is fixedly installed on the upper surface of the filter housing (1), and a controller (5) is fixedly installed at the right end of the upper surface of the filter housing (1), characterized in that: The filter housing (1) is provided with a self-cleaning filter bag structure (6), which includes: An annular fixing frame (601) is fixedly installed on the inner wall surface of the filter housing (1). A buffer spring (602) is fixedly installed at the upper end of the annular fixing frame (601). An annular mounting plate (603) is fixedly installed at the top end of the buffer spring (602). An annular partition plate (604) is fixedly installed on the bottom surface of the annular mounting plate (603). A filter bag (605) is disposed above an annular partition (604). An iron block (609) is fixedly installed at the bottom inside the filter bag (605). A reinforcing rope (610) is fixedly installed inside the filter bag (605). A support column (606) is provided at the upper end of the annular partition (604), and an annular limiting plate (607) is provided on the upper surface of the support column (606). A fixed rod (611) is fixedly installed inside the filter housing (1). An electric telescopic rod (612) is fixedly installed at the center of the bottom surface of the fixed rod (611). An electromagnet (613) is fixedly installed at the bottom end of the electric telescopic rod (612). A collector hood (701) is fixedly installed at the top of the inside of the filter housing (1). A cross-shaped fixing frame (702) is provided below the collector hood (701). A motor (703) is fixedly installed at the center of the upper surface of the cross-shaped fixing frame (702). A fan (704) is fixedly installed through the upper surface of the cross-shaped fixing frame (702). A buffer rod (801) is provided at the bottom of the filter bag (605). A groove (802) is provided at the center of the upper surface of the buffer rod (801). A limit spring (803) is fixedly installed on the bottom surface of the groove (802). A limit post (804) is fixedly installed at the top of the limit spring (803). A buffer rubber plate (805) is fixedly installed on the upper surface of the limit post (804).

2. A filter bag device with self-cleaning function according to claim 1, characterized in that: The electromagnet (613) is located directly above the iron block (609).

3. A filter bag device with self-cleaning function according to claim 1, characterized in that: The outer wall of the annular partition (604) is in contact with the inner wall of the annular fixing frame (601).

4. A filter bag device with self-cleaning function according to claim 1, characterized in that: The bottom end of the support column (606) passes through the upper surface of the filter bag (605) and is fixedly connected to the upper surface of the annular partition (604). The annular limiting plate (607) is fixedly installed on the upper end of the support column (606) by bolts (608).

5. A filter bag device with self-cleaning function according to claim 1, characterized in that: The outer wall of the cross-shaped fixing bracket (702) is fixedly connected to the inner wall of the filter housing (1).

6. A filter bag device with self-cleaning function according to claim 1, characterized in that: Both ends of the buffer rod (801) are fixedly connected to the inner wall of the filter housing (1).

7. A filter bag device with self-cleaning function according to claim 1, characterized in that: The outer wall of the limiting post (804) is in contact with the inner wall of the groove (802), and the upper surface of the buffer rubber plate (805) is in contact with the bottom surface of the iron block (609).

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