Cloth bag dust remover for intermittently cleaning cloth bag

Abstract

The invention discloses a cloth bag dust remover capable of intermittently cleaning a cloth bag, and relates to the technical field of cloth belt dust removers, the cloth bag dust remover comprises a box body, a box frame used for supporting the box body is fixedly installed on the outer wall of the box body, and a dust hopper used for collecting dust in the dust removal process is fixedly installed on the bottom wall of the box body; the side wall of the left side of the box body is provided with an air inlet for dust-containing gas to enter, the side wall of the right side of the box body is provided with an exhaust port for discharging purified gas, a partition plate is fixedly installed in the box body, a pattern plate is rotatably installed on the partition plate, and a through hole for gas to flow upwards is formed in the pattern plate; a plurality of groups of through holes are symmetrically arranged in pairs, and a cloth bag is arranged below each group of through holes; and a pulse assembly for performing pulse dust removal on the cloth bag is arranged outside the box body. The intermittent dust removal device solves the problem that dust removal is not thorough in the intermittent dust removal process of an existing bag-type dust remover.

Description

Technical Field

[0001] This invention belongs to the technical field of cloth belt dust collectors, specifically, it relates to a bag dust collector that intermittently cleans the cloth bags. Background Technology

[0002] A baghouse dust collector is a dry dust filtration device. It is suitable for collecting fine, dry, non-fibrous dust. When dust-laden gas enters the baghouse dust collector, larger, heavier dust particles settle down due to gravity and fall into the ash hopper. When the gas containing finer dust passes through the filter media, the dust is trapped, thus purifying the gas. The filter bags are usually cleaned by compressed air pulse-jet cleaning. The cleaning mechanism consists of an air tank, a jet pipe, and an electromagnetic pulse control valve. During cleaning, the electromagnetic valve opens the pulse valve, and compressed air is injected. The cleaning control device (differential pressure, timed, or manual control) opens the electromagnetic pulse jet according to the set program. The compressed gas passes through each pulse valve in sequence in a very short time and induces several times the amount of air injected into the filter bag through the nozzles on the jet pipe, forming an air wave. This causes the filter bag to expand rapidly from the opening to the bottom, resulting in a strong cleaning effect and shaking off the dust on the filter bag.

[0003] However, existing belt dust collectors still have the following shortcomings in actual use: First, existing dust collectors generally require stopping the air intake, i.e., stopping the machine for cleaning, and focusing on cleaning the dust collector bags. Therefore, a large number of nozzles are required. This not only makes the blowpipe structure complex and occupies a lot of space, but also leads to insufficient air pressure of the blowpipe airflow, making it difficult to achieve a good back-blowing effect. Furthermore, stopping the exhaust gas intake will also reduce the working efficiency of the belt dust collector. Second, the dust blown down will spread throughout the dust collection chamber under the action of airflow, causing secondary pollution to the remaining dust collector bags. Therefore, the cleaning and dust removal efficiency is low, and the dust is relatively dispersed, making it difficult to discharge, further affecting the dust removal efficiency.

[0004] An existing patent (application number: CN202110599706.4) proposes a bag filter dust collector with intermittent bag cleaning, including a shell, a dust hopper fixedly connected to the bottom of the shell, a tube sheet movably sleeved inside the shell, several sets of filter bags fixedly connected to the bottom of the tube sheet, a motor fixedly installed on one side of the upper end of the shell, and a belt movably sleeved to the output shaft end of the motor. Through the arrangement of a second gear, a movable sleeve, and a blowpipe, not only can bag cleaning be performed without stopping the machine, but cleaning and filtration can also be carried out simultaneously. By intermittently cleaning each set of filter bags through the blowpipe, the number of blowpipes can be reduced, avoiding insufficient air pressure. Moreover, the automatic sequential blowing of each set of filter bags ensures that each set of filter bags can be cleaned, and the cleaning work can be carried out continuously, always ensuring that the dust accumulated on the surface of the cloth belt is kept to a minimum, thereby improving the filtration effect of the cloth belt dust collector.

[0005] When the belt dust collector designed as described above is used, because it is an intermittent pulse jet dust collector, it is easily affected by the frequency of the pulse jet, the pressure of the airflow, and the duration of the pulse jet. This may result in incomplete dust removal. Furthermore, since the filter bags cannot be cleaned by other means, a lot of dust remains on the filter bags. This not only affects the dust removal effect but may also cause the filter bags to become clogged and worn, further reducing the dust removal efficiency.

[0006] In view of the above, this application is hereby submitted. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a bag filter dust collector that cleans the filter bags intermittently, so as to achieve the desired purpose.

[0008] To solve the above-mentioned technical problems, the present invention provides a bag filter dust collector with intermittent bag cleaning, comprising a housing, a frame fixedly installed on the outer wall of the housing for supporting it, a dust hopper fixedly installed on the bottom wall of the housing for collecting dust during the dust removal process, an air inlet for dust-laden gas to enter on the left side wall of the housing, and an exhaust port for clean gas to exit on the right side wall of the housing, a partition fixedly installed inside the housing, a tube sheet rotatably installed on the partition, and through holes for gas to flow upward on the tube sheet, the through holes being arranged in multiple sets symmetrically in pairs, with a filter bag placed below each set of through holes; a pulse assembly for pulse dust removal of the filter bags is provided on the outside of the housing, and a fixing assembly for fixing the filter bags is fixedly installed on the bottom surface of the tube sheet, the fixing assembly being provided in multiple sets, the multiple fixing assemblies being symmetrically arranged with the through holes one to one, and a transmission assembly is provided on the top of the housing for adjusting the rotation of the tube sheet to drive the multiple sets of through holes to intermittently move below the pulse assembly.

[0009] Furthermore, the pulse assembly includes a pulse tube fixedly installed on the side wall of the housing, a blow pipe fixedly installed on the bottom wall of the pulse tube, a pulse valve fixedly installed at one end of the pulse tube extending to the outer wall of the housing, an air bag fixedly installed on the side wall of the housing, and the air bag, pulse valve and pulse tube are interconnected.

[0010] Furthermore, the transmission assembly includes a first rotating shaft rotatably mounted on the top wall of the housing, the bottom end of the first rotating shaft being fixedly connected to the center of the top surface of the perforated plate, a transmission gear being fixedly mounted on the top end of the first rotating shaft, a drive motor being fixedly mounted on the top surface of the housing, a second rotating shaft being rotatably mounted on the top surface of the housing, a drive gear being fixedly mounted on the second rotating shaft that intermittently meshes with the transmission gear, a synchronous pulley being fixedly mounted on both the drive end of the drive motor and the top end of the second rotating shaft, and a synchronous belt being connected between the two synchronous pulleys.

[0011] Furthermore, the transmission assembly also includes a third rotating shaft rotatably mounted on the top wall of the housing and a bracket fixedly mounted on the top wall of the housing. A cylindrical cam is fixedly mounted at the bottom end of the third rotating shaft, a driven wheel is fixedly mounted on the outer wall of the third rotating shaft, and a driving wheel is fixedly mounted on the outer wall of the first rotating shaft. A transmission belt drives the driven wheel and the driving wheel. A sliding rod is slidably mounted on the bracket, and an abutment head is fixedly mounted at the top end of the sliding rod. The top end of the abutment head abuts against the cylindrical cam. A return spring is sleeved on the sliding rod, and the top end of the return spring is fixedly connected to the bottom surface of the abutment head. The bottom end of the return spring is fixedly connected to the upper surface of the bracket. A travel spring is movably mounted at the bottom end of the sliding rod, and an upper contact piece is fixedly connected to the bottom end of the travel spring. Multiple lower contact pieces are arranged in a circumferential array on the top surface of the perforated plate.

[0012] Furthermore, the fixing assembly includes an outer sleeve fixedly installed on the bottom surface of the tube sheet and axially symmetrical with respect to the through hole. An inner sleeve is slidably fitted inside the outer sleeve. A cage frame is provided at the bottom end of the inner sleeve. A cloth bag is fitted on the outer side of the cage frame. Multiple first permanent magnets are arranged in a cylindrical array on the inner wall of the outer sleeve. Multiple second permanent magnets are arranged on the outer wall of the inner sleeve. The first and second permanent magnets are symmetrically arranged and attracted to each other with the same pole. A strong magnet is fixedly installed on the inner bottom wall of the outer sleeve. A levitation magnet is fixedly installed on the bottom wall of the inner sleeve at a position symmetrical to the strong magnet. The levitation magnet and the strong magnet are mutually repelled. Four sets of magnets are arranged in a circumferential array on the inner bottom wall of the outer sleeve.

[0013] Furthermore, the air bag and pulse valve are electrically connected to the upper and lower contact plates, respectively, along with the first permanent magnet and the strong magnet, and form a closed circuit when the upper and lower contact plates are in contact.

[0014] Furthermore, a Hall sensor is fixedly installed on the inner bottom wall of the outer sleeve. The Hall sensor is perpendicularly symmetrical to the center of the levitation magnet. An electromagnetic coil is also installed on the inner bottom wall of the outer sleeve, and the electromagnetic coil is distributed on both sides of the strong magnet.

[0015] Furthermore, the cage frame includes a fixed rod fixedly installed on the bottom wall of the inner sleeve, a sleeve rod slidably sleeved on the outside of the fixed rod, an upper limit ring plate fixedly installed at the top of the sleeve rod, a mounting seat fixedly installed at the bottom of the sleeve rod, an adjusting rack slidably installed on the mounting seat, a lower limit ring plate fixedly installed at the bottom of the adjusting rack, an adjusting gear rotatably installed on the bottom surface of the mounting seat, the adjusting rack meshing with the adjusting gear, and a toothed groove on the fixed rod meshing with the adjusting gear.

[0016] Furthermore, multiple fixed rods, sleeve rods, mounting seats, and adjusting racks are provided, and these multiple fixed rods, sleeve rods, mounting seats, and adjusting racks are distributed in a circumferential array on the bottom surface of the inner sleeve.

[0017] Furthermore, the fixing rod and the adjusting rack are arranged in parallel and symmetrically, and the outer diameter of the upper limit ring plate is larger than the inner diameter of the bottom end port of the outer sleeve.

[0018] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0019] 1. In this invention, the drive motor rotates at a relatively slow speed, which is matched with the rotation speed of the tube sheet. The drive motor drives the gear to rotate. When the toothed part of the drive gear meshes with the transmission gear, it drives the tube sheet. When the drive gear and the transmission gear rotate to the toothless area, one set of filter bags rotates to the bottom of the blowpipe and stops rotating. At this time, the ash hopper is stationary, which allows the through holes to alternately correspond with the blowpipe in an intermittent manner, thereby achieving the effect of intermittent dust removal. This allows for continuous dust removal, ensuring that the dust accumulated on the surface of the filter bag is always kept to a minimum, thus improving the filtration effect of the bag filter.

[0020] 2. In this invention, when the upper contact piece contacts the lower contact piece, the circuit between the first permanent magnet and the strong magnet is closed and energized. The first permanent magnet can generate magnetic repulsion with the second permanent magnet set on the inner sleeve, while the strong magnet can provide a lifting force to the suspending magnet, thereby causing the inner sleeve to move upward and be in a magnetically suspended state. When the upper contact piece separates from the lower contact piece, the circuit between the first permanent magnet and the strong magnet is disconnected and de-energized. At this time, the inner sleeve suspended inside the outer sleeve will fall downward under gravity. During the fall, it can drive the cloth bag installed on it to generate vibration force. Through the vertical reciprocating motion of the cloth bag, the dust collector bag is reciprocated and vibrated. The vibration intensity is large, which can realize the self-cleaning performance of the dust collector bag, further realizing the self-cleaning performance of the dust collector bag and improving the dust removal efficiency.

[0021] 3. In this invention, when the inner sleeve is suspended upward by magnetic force, it will drive the fixing rod to move upward synchronously. When the fixing rod moves upward, the bottom surface of the outer sleeve blocks the top surface of the upper limit ring plate, so that the upper limit ring plate is below the outer sleeve. The inner sleeve drives the fixing rod to move inward into the outer sleeve. The movement of the fixing rod causes the adjusting rack to move downward. At this time, the dust collector bag will be in a taut state. The tautness of the dust collector bag can avoid the problem of wrinkles easily appearing in the bag during dust cleaning, making the dust cleaning more thorough. Attached Figure Description

[0022] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the left-side stereoscopic structure of the present invention; Figure 2 This is a right-side stereoscopic view of the present invention; Figure 3 This is a bottom-view structural diagram of the present invention; Figure 4 This is a front view structural diagram of the present invention; Figure 5 This is a side view of the structure in this invention; Figure 6 for Figure 5 Schematic diagram of the structure with the mid-section AA; Figure 7 This is a schematic diagram of the connection structure between the perforated plate and the transmission mechanism in this invention; Figure 8 for Figure 7 A schematic diagram of the structure viewed from below; Figure 9 This is a schematic diagram of the fixing component in this invention; Figure 10 This is a schematic diagram of the fixing component in this invention.

[0023] Numbering on the map: 1. Housing; 2. Frame; 3. Ash Hopper; 4. Air Inlet; 5. Exhaust Outlet; 6. Partition; 7. Tube Plate; 8. Through Hole; 9. Air Manhole; 10. Pulse Valve; 11. Pulse Pipe; 12. Puff Pipe; 13. First Rotating Shaft; 14. Transmission Gear; 15. Drive Motor; 16. Second Rotating Shaft; 17. Drive Gear; 18. Synchronous Pulley; 19. Synchronous Belt; 20. Bracket; 21. Sliding Rod; 22. Contact Head; 23. Return Spring; 24. Stroke Spring; 25. Upper Contact Plate; 26. Lower Contact Plate; 27. Third Rotating Shaft; 28. Cylindrical Cam; 29. ​​Driven Gear; 30. Driven Gear; 31. Transmission Belt; 32. Fixing component; 321. Outer sleeve; 322. Inner sleeve; 323. First permanent magnet; 324. Second permanent magnet; 325. Suspension magnet; 326. Strong magnet; 327. Hall sensor; 328. Electromagnetic coil; 329. Fixing rod; 330. Sleeve rod; 331. Upper limit ring plate; 332. Mounting base; 333. Adjusting rack; 334. Lower limit ring plate; 335. Adjusting gear.

[0024] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] like Figures 1 to 10 As shown, the present invention provides a bag filter dust collector that cleans the filter bags intermittently.

[0029] Specifically, by Figure 1-10The device includes a housing 1, with a frame 2 fixedly installed on the outer wall of the housing 1 for support. A dust hopper 3 for collecting dust during the dust removal process is fixedly installed on the bottom wall of the housing 1. An air inlet 4 for dust-laden gas is opened on the left side wall of the housing 1, and an exhaust outlet 5 for clean gas is opened on the right side wall of the housing 1. A partition 6 is fixedly installed inside the housing 1, and a perforated plate 7 is rotatably installed on the partition 6. Multiple sets of through holes 8 are symmetrically arranged in pairs for upward gas flow, and a filter bag is placed below each set of through holes 8. The exterior of the housing 1 is equipped with a pulse dust collector for pulse-jet dust removal of the filter bags. The pulse assembly includes a pulse pipe 11 fixedly installed on the side wall of the housing 1, a blow pipe 12 fixedly installed on the bottom wall of the pulse pipe 11, a pulse valve 10 fixedly installed at one end of the pulse pipe 11 extending to the outer wall of the housing 1, an air tank 9 fixedly installed on the side wall of the housing 1, the air tank 9, the pulse valve 10 and the pulse pipe 11 are interconnected, a fixing component 32 for fixing the cloth bag is fixedly installed on the bottom surface of the tube sheet 7, multiple fixing components 32 are provided, and multiple fixing components 32 are symmetrically arranged with the through holes 8 one by one, and a transmission component is provided on the top of the housing 1 for adjusting the rotation of the tube sheet 7 to drive multiple sets of through holes 8 to move intermittently to the bottom of the pulse assembly; The transmission assembly includes a first rotating shaft 13 rotatably mounted on the top wall of the housing 1. The bottom end of the first rotating shaft 13 is fixedly connected to the center of the top surface of the tube sheet 7. A transmission gear 14 is fixedly mounted on the top end of the first rotating shaft 13. A drive motor 15 is fixedly mounted on the top surface of the housing 1. A second rotating shaft 16 is rotatably mounted on the top surface of the housing 1. A drive gear 17 that intermittently meshes with the transmission gear 14 is fixedly mounted on the second rotating shaft 16. Synchronous pulleys 18 are fixedly mounted on both the drive end of the drive motor 15 and the top end of the second rotating shaft 16. A synchronous belt 19 is connected between the two synchronous pulleys 18. The transmission assembly also includes a third rotating shaft 27 rotatably mounted on the top wall of the housing 1 and a bracket 20 fixedly mounted on the top wall of the housing 1. A cylindrical cam 28 is fixedly mounted at the bottom end of the third rotating shaft 27. A driven wheel 29 is fixedly mounted on the outer wall of the third rotating shaft 27. A driving wheel 30 is fixedly mounted on the outer wall of the first rotating shaft 13. A transmission belt 31 is connected between the driven wheel 29 and the driving wheel 30. A sliding rod 21 is slidably mounted on the bracket 20. An abutment head 22 is fixedly mounted at the top end of the sliding rod 21. The top end of the abutment head 22 abuts against the cylindrical cam 28. A return spring 23 is sleeved on the sliding rod 21. The top end of the return spring 23 is fixedly connected to the bottom surface of the abutment head 22. The bottom end of the return spring 23 is fixedly connected to the upper surface of the bracket 20. A stroke spring 24 is movably mounted at the bottom end of the sliding rod 21. An upper contact piece 25 is fixedly connected to the bottom end of the stroke spring 24. Multiple lower contact pieces 26 are arranged in a circular array on the top surface of the tube sheet 7.

[0030] In this invention, during use, dust-laden flue gas enters the interior of the housing 1 through the air inlet 4 and is then discharged through the exhaust outlet 5. During the flow of the dust-laden flue gas inside the housing 1, it is filtered by the tube sheet 7, the through holes 8 and the filter bag. When dust removal is required from the filter bag, the pulse valve 10 is opened. At this time, compressed air is ejected from the air tank 9 through the pulse valve 10, pulse pipe 11, and blow pipe 12. The gas ejected from the blow pipe 12 is the primary air. When the high-speed airflow induces several times the amount of surrounding air, which is the secondary air, through the venturi inducer, it will enter the filter bag, creating an instantaneous positive pressure inside the filter bag, thus achieving dust removal. When the bag filter is in pulse dust removal operation, the drive motor 15 starts. The speed of the drive motor 15 is relatively slow and is matched with the speed of the tube sheet 7. The drive motor 15 drives the second rotating shaft 16 and the drive gear 17 to rotate through the synchronous pulley 18 and the synchronous belt 19. When the toothed part of the drive gear 17 meshes with the transmission gear 14, the first rotating shaft 13 rotates and drives the tube sheet 7. When the drive gear 17 and the transmission gear 14 rotate to the toothless area, one group of filter bags rotates to the bottom of the blowpipe 12 and stops rotating. At this time, the ash hopper 3 is stationary, so that the through hole 8 can alternately correspond to the blowpipe 12 intermittently to achieve the effect of intermittent dust removal. During rotation, the first rotating shaft 13 drives the third rotating shaft 27 to rotate via the driven wheel 29, the driving wheel 30, and the transmission belt 31. The cylindrical cam 28 rotates during this process, causing the sliding rod 21 on the bracket 20 to slide vertically back and forth. Since the flange of the cylindrical cam 28 is matched with the teeth on the drive gear 17, when the toothed part of the drive gear 17 meshes with the transmission gear 14, the flange of the cylindrical cam 28 presses down on the sliding rod 21 to its lowest position. When 21 moves downward, it drives the stroke spring 24 to move downward, so that the upper contact piece 25 contacts the lower contact piece 26 and is energized, which enables the air tank 9 and pulse valve 10 to open. The filter bags located below the pulse pipe 12 are backwashed and cleaned through the pulse pipe 11 and the blow pipe 12. When the drive gear 17 continues to rotate to the toothed area and meshes with the transmission gear 14 again, the upper contact piece 25 will disengage from the lower contact piece 26 again. This process is repeated, which can realize the backwashing and cleaning of each group of filter bags in sequence without stopping the machine for cleaning, thus improving the filtration effect.

[0031] Furthermore, as a specific embodiment of the present invention, the present invention provides a bag filter dust collector that intermittently cleans the filter bags.

[0032] Specifically, such as Figures 6-10The fixing assembly 32 includes an outer sleeve 321 fixedly installed on the bottom surface of the tube sheet 7 and axially symmetrical with the through hole 8. An inner sleeve 322 is slidably fitted inside the outer sleeve 321. A cage frame is provided at the bottom end of the inner sleeve 322, and a cloth bag is fitted on the outside of the cage frame. A plurality of first permanent magnets 323 are arranged in a cylindrical array on the inner wall of the outer sleeve 321, and a plurality of second permanent magnets 324 are arranged on the outer wall of the inner sleeve 322. The first permanent magnets 323 and the second permanent magnets 324 are symmetrical and attracted to each other with the same pole. A strong magnet 326 is fixedly installed on the inner bottom wall of the outer sleeve 321. A levitation magnet 325 is fixedly installed on the bottom wall of the inner sleeve 322 at a position symmetrical to the strong magnet 326. The levitation magnet 325 and the strong magnet 326 are arranged in a mutually repelling manner. Four sets of magnets are arranged in a circumferential array on the inner bottom wall of the outer sleeve 321. The air bag 9 and the pulse valve 10 are electrically connected to the first permanent magnet 323 and the strong magnet 326, and form a closed circuit when the upper contact piece 25 and the lower contact piece 26 are in contact.

[0033] In this invention, when the upper contact 25 contacts the lower contact 26, the circuit between the first permanent magnet 323 and the strong magnet 326 is closed and energized. When the first permanent magnet 323 and the strong magnet 326 are energized, the first permanent magnet 323 can generate magnetic repulsion with the second permanent magnet 324 disposed on the inner sleeve 322, while the strong magnet 326 can provide a lifting force to the levitation magnet 325, thereby causing the inner sleeve 322 to move upward and be in a magnetically levitated state. When the upper contact 25... When separated from the lower contact piece 26, the circuit between the first permanent magnet 323 and the strong magnet 326 is disconnected and in a de-energized state. At this time, the inner sleeve 322, which is suspended inside the outer sleeve 321, will fall downwards due to gravity. During the fall, it can drive the filter bag installed on it to generate vibration force. Through the vertical reciprocating motion of the filter bag, the dust collector bag is reciprocated and vibrated. The vibration intensity is relatively large, which can realize the self-cleaning performance of the dust collector bag and further improve the dust removal efficiency.

[0034] Furthermore, as a specific embodiment of the present invention, the present invention provides a bag filter dust collector that intermittently cleans the filter bags.

[0035] Specifically, such as Figure 10 As shown, a Hall sensor 327 is fixedly installed on the inner bottom wall of the outer sleeve 321. The Hall sensor 327 is perpendicularly symmetrical to the center of the levitation magnet 325. An electromagnetic coil 328 is also installed on the inner bottom wall of the outer sleeve 321. The electromagnetic coil 328 is distributed on both sides of the strong magnet 326.

[0036] In this invention, four electromagnetic coils 328 arranged in a rectangular array finely adjust the position of the levitation magnet 325 at high frequency. When the inner sleeve 322 deviates from the blowing center of the through hole 8, the levitation magnet 325 deviates along with the inner sleeve 322. When the levitation magnet 325 deviates to the left, the Hall sensor 327 senses the deviance of the levitation magnet 325 and transmits the signal to the external controller. After receiving the signal, the controller sends a corresponding signal and amplifies it to the four strong magnets 325 in the rectangular array on the inner bottom wall of the outer sleeve 321. 26. The strong magnet 326 on the left provides a repulsive force to the suspended magnet 325 that is close to the offset center, while the strong magnet 326 on the right provides an attractive force to the suspended magnet 325 that is far from the offset center. This allows for high-frequency fine-tuning of the suspended magnet 325 to the center of the suspended magnet 325. This is the fine-tuning of the lateral offset. The same principle applies to the longitudinal offset. This achieves the goal of the inner sleeve 322 driving the filter bag to face the bottom of the blowpipe 12, which has an automatic alignment function and avoids the filter bag and the blowpipe 12 from shifting position during pulse dust removal.

[0037] Furthermore, as a specific embodiment of the present invention, the present invention provides a bag filter dust collector that intermittently cleans the filter bags.

[0038] Specifically, such as Figure 3 The cage frame includes a fixed rod 329 fixedly installed on the bottom wall of the inner sleeve 322. A sleeve rod 330 is slidably sleeved on the outside of the fixed rod 329. An upper limit ring plate 331 is fixedly installed at the top of the sleeve rod 330. An installation seat 332 is fixedly installed at the bottom of the sleeve rod 330. An adjusting rack 333 is slidably installed on the installation seat 332. A lower limit ring plate 334 is fixedly installed at the bottom of the adjusting rack 333. An adjusting gear 335 is rotatably installed on the bottom surface of the installation seat 332. The adjusting rack 333 is meshed with the adjusting gear 335. The fixed rod 329 is provided with a tooth groove that meshes with the adjusting gear 335. Multiple fixing rods 329, sleeve rods 330, mounting bases 332 and adjusting racks 333 are provided, and multiple fixing rods 329, sleeve rods 330, mounting bases 332 and adjusting racks 333 are arranged in a circumferential array on the bottom surface of the inner sleeve 322; The fixed rod 329 and the adjusting rack 333 are arranged in parallel and symmetrically, and the outer diameter of the upper limit ring plate 331 is larger than the inner diameter of the bottom end of the outer sleeve 321.

[0039] In this invention, when the inner sleeve 322 is suspended upward by magnetic force, it will drive the fixing rod 329 to move upward synchronously. When the fixing rod 329 moves upward, the bottom surface of the outer sleeve 321 blocks the top surface of the upper limit ring plate 331, causing the upper limit ring plate 331 to be below the outer sleeve 321. The inner sleeve 322 drives the fixing rod 329 to move into the inner sleeve 321. During the movement of the fixing rod 329, the toothed groove on its outer wall will drive the adjusting gear 335 at the bottom of the mounting base 332 to rotate. During the rotation of the adjusting gear 335, it will drive the adjusting rack 333 to move downward, achieving the effect of the fixing rod 329 moving upward and the adjusting rack 333 moving downward synchronously. During the downward movement of the adjusting rack 333, it will drive the lower limit ring plate 33... 4. Moving downwards: Since the filter bag is fitted outside the cage frame and the top end of the filter bag is fitted onto the upper limit ring plate 331, the movement of the inner sleeve 322 will cause the top surface of the upper limit ring plate 331 to fit against the bottom surface of the outer sleeve 321. At this time, the outer sleeve 321 and the upper limit ring plate 331 can clamp and fix a part of the top end of the filter bag. The movement of the lower limit ring plate 334 will cause the bottom end of the filter bag to move downwards, which will put the dust collector bag in a taut state. The tautness of the dust collector bag can avoid the problem of wrinkles easily appearing in the filter bag during dust cleaning, making the dust cleaning more thorough. At the same time, when the inner sleeve 322 is reset, the dust collector bag rebounds, and the rebound vibration of the dust collector bag shakes off some of the dust attached to it, thereby achieving a continuous self-cleaning effect.

[0040] Working principle: During use, dust-laden flue gas enters the interior of the housing 1 through the air inlet 4 and is then discharged through the exhaust outlet 5. During the flow of the dust-laden flue gas inside the housing 1, it is filtered by the tube sheet 7, the through holes 8 and the filter bag. When dust removal is required from the filter bag, the pulse valve 10 is opened. At this time, compressed air is ejected from the air tank 9 through the pulse valve 10, pulse pipe 11, and blow pipe 12. The gas ejected from the blow pipe 12 is the primary air. When the high-speed airflow induces several times the amount of surrounding air, which is the secondary air, through the venturi inducer, it will enter the filter bag, creating an instantaneous positive pressure inside the filter bag, thus achieving dust removal. When the bag filter is in pulse dust removal operation, the drive motor 15 starts. The speed of the drive motor 15 is relatively slow and is matched with the speed of the tube sheet 7. The drive motor 15 drives the second rotating shaft 16 and the drive gear 17 to rotate through the synchronous pulley 18 and the synchronous belt 19. When the toothed part of the drive gear 17 meshes with the transmission gear 14, the first rotating shaft 13 rotates and drives the tube sheet 7. When the drive gear 17 and the transmission gear 14 rotate to the toothless area, one group of filter bags rotates to the bottom of the blowpipe 12 and stops rotating. At this time, the ash hopper 3 is stationary, so that the through hole 8 can alternately correspond to the blowpipe 12 intermittently to achieve the effect of intermittent dust removal. During rotation, the first rotating shaft 13 drives the third rotating shaft 27 to rotate via the driven wheel 29, the driving wheel 30, and the transmission belt 31. The cylindrical cam 28 rotates during this process, causing the sliding rod 21 on the bracket 20 to slide vertically back and forth. Since the flange of the cylindrical cam 28 is matched with the teeth on the drive gear 17, when the toothed part of the drive gear 17 meshes with the transmission gear 14, the flange of the cylindrical cam 28 presses down on the sliding rod 21 to its lowest position. When 21 moves downward, it drives the stroke spring 24 to move downward, so that the upper contact piece 25 contacts the lower contact piece 26 and is energized, which enables the air tank 9 and pulse valve 10 to open. The filter bags below the pulse pipe 12 are backwashed and cleaned through the pulse pipe 11 and the blow pipe 12. When the drive gear 17 continues to rotate to the toothed area and meshes with the transmission gear 14 again, the upper contact piece 25 will disengage from the lower contact piece 26 again. This process is repeated, which can achieve backwashing and cleaning of each group of filter bags in sequence without stopping the machine for cleaning, thus improving the filtration effect. When the upper contact 25 contacts the lower contact 26, the circuit between the first permanent magnet 323 and the strong magnet 326 is closed and energized. When the first permanent magnet 323 and the strong magnet 326 are energized, the first permanent magnet 323 can generate magnetic repulsion with the second permanent magnet 324 disposed on the inner sleeve 322, while the strong magnet 326 can provide a lifting force to the levitation magnet 325, thereby causing the inner sleeve 322 to move upward and be in a magnetically levitated state. When the contact piece 26 is separated, the circuit between the first permanent magnet 323 and the strong magnet 326 is disconnected and the power is off. At this time, the inner sleeve 322, which is suspended inside the outer sleeve 321, will fall downwards due to gravity. During the fall, it can drive the filter bag installed on it to generate vibration force. Through the vertical reciprocating motion of the filter bag, the dust collector bag is reciprocated and vibrated. The vibration intensity is relatively large, which can realize the self-cleaning performance of the dust collector bag and further improve the dust removal efficiency. Four electromagnetic coils 328 arranged in a rectangular array finely adjust the position of the suspending magnet 325 at high frequency. When the inner sleeve 322 deviates from the blowing center of the through hole 8, the suspending magnet 325 deviates along with the inner sleeve 322. When the suspending magnet 325 deviates to the left, the Hall sensor 327 senses the deviance of the suspending magnet 325 and transmits the signal to the external controller. After receiving the signal, the controller sends a corresponding signal and amplifies it to the four strong magnets 326 in a rectangular array on the inner bottom wall of the outer sleeve 321. This causes the strong magnet 326 on the left to provide a repulsive force to the suspending magnet 325 that is close to the deviated center, while the strong magnet 326 on the right to provide an attractive force to the suspending magnet 325 that is far from the deviated center. This finely adjusts the suspending magnet 325 to the center at high frequency. This is the fine adjustment for the lateral deviance. The same principle applies to the longitudinal deviance. This achieves the goal of the inner sleeve 322 driving the filter bag to face the bottom of the blowpipe 12, which has an automatic alignment function and avoids the filter bag and the blowpipe 12 from shifting position during the pulse dust removal process. When the inner sleeve 322 is lifted upward by magnetic force, it will drive the fixed rod 329 to move upward synchronously. As the fixed rod 329 moves upward, the bottom surface of the outer sleeve 321 blocks the top surface of the upper limit ring plate 331, causing the upper limit ring plate 331 to be below the outer sleeve 321. The inner sleeve 322 then drives the fixed rod 329 to move inward into the outer sleeve 321. During the movement of the fixed rod 329, the toothed grooves on its outer wall will drive the adjusting gear 335 at the bottom of the mounting base 332 to rotate. The rotating adjusting gear 335 will drive the adjusting rack 333 to move downward, achieving the effect of the fixed rod 329 moving upward and the adjusting rack 333 moving downward synchronously. As the adjusting rack 333 moves downward, it will drive the lower limit ring plate 334 to... As the bag moves downwards, since it is fitted outside the cage and its top end is fitted onto the upper limit ring plate 331, the movement of the inner sleeve 322 causes the top surface of the upper limit ring plate 331 to come into contact with the bottom surface of the outer sleeve 321. At this time, the outer sleeve 321 and the upper limit ring plate 331 cooperate to clamp and fix a portion of the top end of the bag. The movement of the lower limit ring plate 334 causes the bottom end of the bag to move downwards, which puts the dust collector bag in a taut state. The taut dust collector bag can avoid the problem of wrinkles easily appearing during dust cleaning, making the dust cleaning more thorough. At the same time, when the inner sleeve 322 returns to its original position, the dust collector bag rebounds, and the rebound vibration of the dust collector bag shakes off some of the dust attached to it, thereby achieving a continuous self-cleaning effect.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A bag filter dust collector for intermittent bag cleaning, comprising a housing (1), characterized in that, A frame (2) for supporting the outer wall of the box (1) is fixedly installed. A dust hopper (3) for collecting dust during the dust removal process is fixedly installed on the bottom wall of the box (1). An air inlet (4) for dust-laden gas to enter is opened on the left side wall of the box (1). An exhaust port (5) for clean gas to be discharged is opened on the right side wall of the box (1). A partition (6) is fixedly installed inside the box (1). A perforated plate (7) is rotatably installed on the partition (6). A through hole (8) for gas to flow upward is opened on the perforated plate (7). The through holes (8) are arranged in pairs symmetrically in multiple groups, and a cloth bag is provided below each group of through holes (8); the outside of the box (1) is provided with a pulse assembly for pulse dust removal of the cloth bag; the bottom surface of the tube sheet (7) is fixedly installed with a fixing assembly (32) for fixing the cloth bag; multiple fixing assemblies (32) are provided, and multiple fixing assemblies (32) are symmetrically arranged with the through holes (8); the top of the box (1) is provided with a transmission assembly for adjusting the rotation of the tube sheet (7) to drive multiple groups of through holes (8) to move intermittently to the bottom of the pulse assembly.

2. The bag filter dust collector with intermittent bag cleaning according to claim 1, characterized in that, The pulse assembly includes a pulse tube (11) fixedly installed on the side wall of the housing (1), a blow pipe (12) fixedly installed on the bottom wall of the pulse tube (11), a pulse valve (10) fixedly installed at one end of the pulse tube (11) extending to the outer wall of the housing (1), an air bag (9) fixedly installed on the side wall of the housing (1), and the air bag (9), pulse valve (10) and pulse tube (11) are interconnected.

3. A bag filter dust collector with intermittent bag cleaning as described in claim 1, characterized in that, The transmission assembly includes a first rotating shaft (13) rotatably mounted on the top wall of the housing (1). The bottom end of the first rotating shaft (13) is fixedly connected to the center of the top surface of the tube sheet (7). A transmission gear (14) is fixedly mounted on the top end of the first rotating shaft (13). A drive motor (15) is fixedly mounted on the top surface of the housing (1). A second rotating shaft (16) is rotatably mounted on the top surface of the housing (1). A drive gear (17) that intermittently meshes with the transmission gear (14) is fixedly mounted on the second rotating shaft (16). A synchronous pulley (18) is fixedly mounted on both the drive end of the drive motor (15) and the top end of the second rotating shaft (16). A synchronous belt (19) is connected between the two synchronous pulleys (18).

4. A bag filter dust collector for intermittent bag cleaning according to claim 3, characterized in that, The transmission assembly further includes a third rotating shaft (27) rotatably mounted on the inner top wall of the housing (1) and a bracket (20) fixedly mounted on the inner top wall of the housing (1). A cylindrical cam (28) is fixedly mounted at the bottom end of the third rotating shaft (27). A driven wheel (29) is fixedly mounted on the outer wall of the third rotating shaft (27). A driving wheel (30) is fixedly mounted on the outer wall of the first rotating shaft (13). A transmission belt (31) is drivingly connected between the driven wheel (29) and the driving wheel (30). A sliding rod (21) is slidably mounted on the bracket (20). 1) A contact head (22) is fixedly installed at the top end. The top end of the contact head (22) abuts against the cylindrical cam (28). A return spring (23) is sleeved on the sliding rod (21). The top end of the return spring (23) is fixedly connected to the bottom surface of the contact head (22). The bottom end of the return spring (23) is fixedly connected to the upper surface of the bracket (20). A stroke spring (24) is movably installed at the bottom end of the sliding rod (21). An upper contact piece (25) is fixedly connected to the bottom end of the stroke spring (24). Multiple lower contact pieces (26) are arranged in a circular array on the top surface of the flower plate (7).

5. A bag filter dust collector for intermittent bag cleaning according to claim 1, characterized in that, The fixing component (32) includes an outer sleeve (321) fixedly installed on the bottom surface of the tube sheet (7) and axially symmetrical with the through hole (8). An inner sleeve (322) is slidably fitted inside the outer sleeve (321). A cage frame is provided at the bottom end of the inner sleeve (322), and a cloth bag is fitted on the outside of the cage frame. Multiple first permanent magnets (323) are arranged in a cylindrical array on the inner wall of the outer sleeve (321), and multiple second permanent magnets (323) are arranged on the outer wall of the inner sleeve (322). 324), the first permanent magnet (323) and the second permanent magnet (324) are symmetrical and attracted to each other with the same pole. A strong magnet (326) is fixedly installed on the inner bottom wall of the outer sleeve (321). A levitation magnet (325) is fixedly installed on the bottom wall of the inner sleeve (322) at a position symmetrical to the strong magnet (326). The levitation magnet (325) and the strong magnet (326) are mutually repulsive. Four sets of magnets are arranged in a circular array on the inner bottom wall of the outer sleeve (321).

6. A bag filter dust collector for intermittent bag cleaning according to claim 2, characterized in that, The air bag (9) and pulse valve (10) are electrically connected to the upper contact plate (25) and lower contact plate (26) of the first permanent magnet (323) and strong magnet (326), and form a closed circuit when the upper contact plate (25) and lower contact plate (26) are in contact.

7. A bag filter dust collector for intermittent bag cleaning according to claim 5, characterized in that, A Hall sensor (327) is fixedly installed on the inner bottom wall of the outer sleeve (321). The Hall sensor (327) is perpendicularly symmetrical to the center of the levitation magnet (325). An electromagnetic coil (328) is also installed on the inner bottom wall of the outer sleeve (321). The electromagnetic coil (328) is distributed on both sides of the strong magnet (326).

8. A bag filter dust collector for intermittent bag cleaning according to claim 5, characterized in that, The cage frame includes a fixed rod (329) fixedly installed on the bottom wall of the inner sleeve (322). A sleeve rod (330) is slidably sleeved on the outside of the fixed rod (329). An upper limit ring plate (331) is fixedly installed at the top of the sleeve rod (330). A mounting seat (332) is fixedly installed at the bottom of the sleeve rod (330). An adjusting rack (333) is slidably installed on the mounting seat (332). A lower limit ring plate (334) is fixedly installed at the bottom of the adjusting rack (333). An adjusting gear (335) is rotatably installed on the bottom surface of the mounting seat (332). The adjusting rack (333) meshes with the adjusting gear (335). The fixed rod (329) is provided with a tooth groove that meshes with the adjusting gear (335).

9. A bag filter dust collector for intermittent bag cleaning according to claim 8, characterized in that, Multiple fixed rods (329), sleeves (330), mounting bases (332) and adjusting racks (333) are provided, and multiple fixed rods (329), sleeves (330), mounting bases (332) and adjusting racks (333) are arranged in a circumferential array on the bottom surface of the inner sleeve (322).

10. A bag filter dust collector for intermittent bag cleaning according to claim 8, characterized in that, The fixed rod (329) and the adjusting rack (333) are arranged in parallel and symmetrically, and the outer diameter of the upper limit ring plate (331) is larger than the inner diameter of the bottom end port of the outer sleeve (321).

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