Ash removal device for bag-type dust collector

By setting up scrapers and high-pressure airflow injection devices inside and outside the bag dust collector, the dust removal internally and externally cleaned, the problem of incomplete dust removal in the existing technology is solved, and efficient cleaning of dust filter bags and improved dust removal efficiency is achieved.

CN223159004UActive Publication Date: 2025-07-29JIANGYIN KAIYE TEXTILE MASCH MFG CO LTD
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Patent Information

Application Number
CN202422094405.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-28
Publication Date
2025-07-29
Estimated Expiration
2034-08-28

AI Technical Summary

Technical Problem

The dust removal method of existing bag dust collectors is not thorough, resulting in frequent clogging of bags, affecting dust removal efficiency, and requiring an efficient dust removal device.

Method used

The scraper and a high-pressure airflow injection device are installed inside and outside the dust filter bag, and the dust is cleaned up through internal and external linkage. The scraper scrapes away the dust on the inner wall, and the high-pressure airflow blows away the dust on the outer wall to achieve deep cleaning.

Benefits of technology

It realizes efficient dust cleaning of dust filter bags, restores its filtration capacity, extends service life, and improves dust removal efficiency.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223159004U_ABST
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Abstract

The utility model relates to an ash removal device for a bag-type dust remover, which comprises a bag inner dust removal device and a bag outer dust removal device, the dust removal device in the cloth bag comprises a vertical scraper, a rotating shaft and a rotary driving device, the scraper is propped against the inner wall of the dust filtering cloth bag; the scraper is mounted on the rotating shaft through a transverse plate; the top of the rotating shaft penetrates through a sealing cover plate at the top of the dust filtering cloth bag and then is connected with a rotary driving device; the dust removal device outside the cloth bag comprises a pipe frame, a nozzle and a lifting driving device, the pipe frame surrounds the outer side of the dust filtering cloth bag; a plurality of nozzles are arranged on the pipe frame and face the outer surfaces of the dust filtering cloth bags, and a plurality of nozzles are arranged outside each dust filtering cloth bag; the nozzle is connected with an external compressed air source through a pipe frame; and a pipe frame of the cloth bag external dust removal device is mounted on the lifting device. According to the utility model, internal and external linkage is realized, so that the dust filtering cloth bag is deeply cleaned; and finally, the dust impurities intercepted in the dust filtering cloth bag are basically cleared off, so that the dust filtering cloth bag is recovered to be used again.
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Description

Technical Field

[0001] The utility model relates to a device for cleaning dust of a bag filter, belonging to the field of dust removal mechanical equipment. Background Art

[0002] A bag filter is an efficient dry dust collector. When the dusty air is introduced into the bag filter, when the air passes through the filter bag, the particulate matter dust suspended in the gas will be captured by the filter bag, remaining on the inner side of the filter bag, while the clean air passes through the filter bag to achieve the purpose of dust removal. It has high dust removal efficiency and is widely used.

[0003] The particulate matter dust intercepted on the filter bag gradually accumulates over time and needs to be cleaned regularly. Otherwise, after the filter bag is completely blocked, dust removal and filtration cannot be carried out anymore. Common dust cleaning methods include gas dust cleaning and mechanical vibration dust cleaning; gas dust cleaning is mainly pulse dust cleaning, that is, a pulsed air flow is sprayed into the filter bag, making the filter bag expand rapidly and vibrate, so as to shake off the accumulated dust. However, the pulsed air flow requires a special generating device and needs to utilize the original air intake channel; while mechanical vibration dust cleaning is to shake off the accumulated dust on the filter bag by mechanical vibration; but since the inside of the filter bag is generally long fluff, simply using gas dust cleaning or mechanical vibration dust cleaning to vibrate the filter bag to shake off the accumulated dust, the effect is not particularly ideal, and the dust cleaning is not very thorough, so it is necessary to stop the machine for dust cleaning frequently.

[0004] In view of the dust cleaning requirements of the vibrating bag filter, it is necessary to design a special dust cleaning device to achieve efficient dust cleaning, so that the filter bag can be restored to its original state as much as possible for efficient and long-term dust removal and filtration. Content of the Utility Model

[0005] The purpose of the utility model is to provide a dust cleaning device for a bag filter, which is provided with dust removal devices on both the inside and outside of the dust filtering bag, scraping dust inside and spraying high-pressure air flow outside, so as to carry out efficient dust cleaning on the dust filtering bag with good dust cleaning effect.

[0006] To achieve the above utility model purpose, the utility model provides a dust cleaning device for a bag filter, including a dust removal device inside the bag and a dust removal device outside the bag;

[0007] The dust removal device inside the bag includes a vertical scraper, a rotating shaft, and a rotation driving device;

[0008] The scraper abuts against the inner wall of the dust filtering bag; the scraper is arranged along the entire height of the dust filtering bag;

[0009] The scraper is installed on the rotating shaft through a cross plate; the rotating shaft is located on the axis of the dust filtering bag;

[0010] The top of the rotating shaft passes through the sealing cover plate at the top of the dust filtering bag and is then connected to the rotation driving device;

[0011] The dust removal device outside the cloth bag includes a pipe rack, nozzles, and a lifting drive device;

[0012] The pipe rack surrounds the outside of the dust-filtering cloth bag. The pipe rack is an air pipe, which is closed and through, and is connected to an external compressed air source;

[0013] A number of nozzles are provided on the pipe rack, and the nozzles face the outer surface of the dust-filtering cloth bag. A number of nozzles are provided outside each dust-filtering cloth bag;

[0014] The nozzles are connected to an external compressed air source through the pipe rack;

[0015] The pipe rack of the dust removal device outside the cloth bag is installed on the lifting device, and the lifting device drives the pipe rack and the nozzles to move up and down along the outer surface of the dust-filtering cloth bag.

[0016] As a further improvement of the present utility model, a bracket is provided between the cross plate and the scraper of the dust removal device inside the cloth bag, and the scraper is detachably installed on the bracket.

[0017] Further, a number of sets of scrapers are provided, and the horizontal projections of the scrapers are symmetric or evenly distributed.

[0018] Further, the scraper and the cross plate are vertically arranged.

[0019] As a further improvement of the present utility model, the rotary drive device is a belt drive;

[0020] A drive wheel is sleeved on the top of the rotating shaft. The drive wheels on the tops of the rotating shafts in a number of dust-filtering cloth bags are connected together by a rotating belt, and the rotating belt is connected to the drive wheel of the scraper rotary drive motor.

[0021] Further, the drive wheel is a synchronous pulley, and the rotating belt is a synchronous belt;

[0022] The synchronous belt bypasses a number of idler wheels.

[0023] As a further improvement of the present utility model, a number of guide wheels are provided on the pipe rack of the dust removal device outside the cloth bag;

[0024] The guide wheels cooperate with the vertical rods of the equipment bracket to form a vertical movement limiting and guiding mechanism.

[0025] As a further improvement of the present utility model, the lifting device of the dust removal device outside the cloth bag is that the outside of the pipe rack is connected to the lifting belt; the bottom of the lifting belt is sleeved on the drive pulley, and the drive pulley is connected to the lifting drive motor;

[0026] The top of the lifting belt is sleeved on the follower pulley, and the follower pulley is installed on the top of the bracket.

[0027] Further, a number of lifting belts are connected to the outside of the pipe rack at the same time, and each lifting belt is supported and installed by a driving pulley and a follower pulley.

[0028] The driving pulleys of several lifting belts are installed on the same driving shaft, and the driving shaft is connected to the output end of the lifting driving motor.

[0029] When the dust cleaning device for the bag filter involved in the present invention works, first stop introducing the air to be filtered into the filter dust bag, so that the inside and outside of the filter dust bag are basically at the same pressure, and then start the dust removal device inside the bag and the dust removal device outside the bag at the same time.

[0030] The scraping rotation driving motor of the dust removal device inside the bag works, drives the rotating shaft to rotate, so that the scraper located inside the filter dust bag moves along the inner wall, and scrapes off the dust inside the filter dust bag.

[0031] The dust removal device outside the bag is started, compressed air is introduced into the pipe rack, and is sprayed on the outer wall of the filter dust bag through the nozzle; at the same time, the lifting driving motor is started to drive the pipe rack to lift along the outer wall of the filter dust bag, and the high-pressure air acts locally on the outer wall of the filter dust bag, blowing the dust embedded in the fibers of the filter dust bag inward, so that it falls off.

[0032] The dust cleaning device for the bag filter of the present invention is internally and externally linked, so as to deeply clean the filter dust bag; finally, the dust and impurities intercepted in the filter dust bag are basically cleared, so that the filter dust bag can be restored to be usable again.

[0033] The dust cleaning device for the bag filter of the present invention has a simple structure, is easy to arrange, and can clean dust efficiently. Brief Description of the Drawings

[0034] Figure 1 It is a schematic diagram of the overall structure of the dust cleaning device for the bag filter of the present invention;

[0035] Figure 2 It is an installation schematic diagram of the dust removal device inside the bag;

[0036] Figure 3 It is a schematic diagram of the overall structure of the dust removal device inside the bag;

[0037] Figure 4 It is a schematic diagram of the overall structure of the dust removal device outside the bag;

[0038] Figure 5 It is a top view of the dust removal device outside the bag. Detailed Description of the Preferred Embodiments

[0039] The following further details the specific embodiments of the present invention with reference to the accompanying drawings.

[0040] The utility model relates to a dust cleaning device for a bag filter, and the overall structure is as follows Figure 1 As shown, a plurality of dust filter bags 3 are installed in a bracket 6. The top of the dust filter bag 3 is closed. The dust-containing air enters from the bottom of the dust filter bag 3, and then the air passes through the bag and is discharged, while the dust remains on the internal fibers of the dust filter bag 3. The utility model relates to a dust cleaning device for a bag filter, which specifically includes an in-bag dust removal device 4 and an out-of-bag dust removal device 5.

[0041] The specific structure of the in-bag dust removal device 4 is as follows Figure 2 , Figure 3 As shown, it includes a vertical scraper 41. The scraper 41 is installed on a bracket 42, and the bracket 42 is installed on a rotating shaft 44 through a cross plate 43. The rotating shaft 44 is located on the axis of the dust filter bag 3. The rotating shaft 44 is relatively long. To improve stability, both ends of the rotating shaft 44 are hinged to the installation bracket of the dust filter bag 3. The bottom of the rotating shaft 44 is inserted into a shaft sleeve 46, and the top of the rotating shaft 44 passes through the sealing cover plate at the top of the dust filter bag 3 and is then connected to a rotation driving device.

[0042] There are several sets of the scraper 41 and the bracket 42. In the attached drawings of this embodiment, there are 2 sets, which are respectively installed on the upper and lower parts of the rotating shaft 44 through the cross plate 43, and the horizontal projections of several sets of the scraper 41 and the bracket 42 are symmetrically or evenly distributed. In this way, when the scraper 41 scrapes the inner side of the dust filter bag 3, the horizontal reverse forces applied to the rotating shaft 44 can be offset, avoiding eccentric loading of the rotating shaft 44.

[0043] The scraper 41, the bracket 42, and the cross plate 43 are all vertically arranged, and the horizontal projection area is very small, thereby reducing the influence on the dust-containing air to be filtered, enabling the dust-containing air to smoothly flow from the bottom to the top of the dust filter bag 3, and realizing the dust filtering operation of the entire bag body.

[0044] The scraper 41 is fixed through the bracket 42. When the scraper 41 is worn, it can be conveniently replaced, that is, the old scraper 41 is removed from the bracket 42, and a new scraper 41 is installed and can be reused.

[0045] Moreover, the scraper 41 can be adjusted according to the dust filtering fibers inside the dust filter bag 3.

[0046] The rotation driving device is a belt drive, that is, a driving wheel 47 is sleeved on the top of the rotating shaft 44, and several driving wheels 47 are connected together through a rotating belt 48. The rotating belt 48 bypasses the driving wheel of the scraper rotation driving motor 49.

[0047] Furthermore, a synchronous belt is used for transmission, that is, the driving wheel 47 is a synchronous belt wheel, and the rotating belt 48 is a synchronous belt. The synchronous belt bypasses several idler wheels for steering and tensioning to ensure the reliability of the transmission, so that the scrapers 41 in several dust filter bags 3 all rotate and work simultaneously to remove dust inside the dust filter bags 3.

[0048] The specific structure of the external dust removal device 5 for the cloth bag is as follows Figure 4 , Figure 5 shown, including a horizontally arranged pipe rack 51, which surrounds the outside of the dust filtering cloth bag 3. The pipe rack 51 is an air pipe, which is closed and through, and is connected to an external compressed air source; a number of nozzles 52 are provided on the pipe rack 51, and the nozzles 52 face the outer surface of the dust filtering cloth bag 3. A number of nozzles 52 are provided outside each dust filtering cloth bag 3. In this embodiment, 8 nozzles 52 are provided outside each dust filtering cloth bag 3; the nozzles 52 are in through connection with the pipe rack 51. The compressed air generated by the external compressed air source is connected to the pipe rack 51 through the air pipe and finally sprayed out through the nozzles 52, and the compressed air is sprayed onto the outer surface of the dust filtering cloth bag 3.

[0049] The pipe rack 51 of the external dust removal device 5 of the present utility model is installed on a lifting device and can be controlled to move up and down along the outer surface of the dust filtering cloth bag 3, so as to perform jet cleaning on the entire height direction of the dust filtering cloth bag 3.

[0050] Guide wheels 53 are provided on the pipe rack 51, and the guide wheels 53 cooperate with the vertical rods of the bracket 6 to limit and guide the up and down movement of the pipe rack 51.

[0051] Specifically, the outside of the pipe rack 51 is connected to a lifting belt 54, and a number of lifting belts are connected along the outside of the pipe rack 51 at the same time; the bottom of the lifting belt 54 is sleeved on a driving belt pulley 55, and the driving belt pulleys 55 of a number of lifting belts 54 are installed on a driving shaft 56 and are connected to the output end of a lifting driving motor 57.

[0052] The top of the lifting belt 54 is sleeved on a follower belt pulley 58, and the follower belt pulley 58 is installed on the top of the bracket 6.

[0053] When the dust cleaning device for the bag filter involved in the present utility model works, first stop introducing the air to be filtered into the dust filtering cloth bag 3 to make the inside and outside of the dust filtering cloth bag 3 basically at the same pressure (atmospheric pressure), and then start the internal dust removal device 4 and the external dust removal device 5 for the cloth bag at the same time; the scraper rotation driving motor 49 works to drive the rotating shaft 44 to rotate, so that the scraper 41 located inside the dust filtering cloth bag 3 moves along the inner wall, and the dust inside the dust filtering cloth bag 3 is scraped off; introduce compressed air into the pipe rack 51 and spray it on the outer wall of the dust filtering cloth bag 3 through the nozzles 52. At the same time, the lifting driving motor 57 is started to drive the pipe rack 51 to move up and down along the outer wall of the dust filtering cloth bag 3. The high-pressure air acts locally on the outer wall of the dust filtering cloth bag 3 to blow the dust embedded in the fibers of the dust filtering cloth bag 3 inward, so that it falls off, thereby performing deep cleaning on the dust filtering cloth bag 3. Finally, the dust and impurities intercepted in the dust filtering cloth bag 3 are basically cleared, so that the dust filtering cloth bag 3 can be restored to be usable again.

[0054] The preferred embodiments of the present utility model have been specifically described above. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. Dust cleaning device for bag filter, characterized in that It includes a dust removal device inside the cloth bag and a dust removal device outside the cloth bag; The dust removal device inside the cloth bag includes a vertical scraper, a rotating shaft, and a rotation driving device; The scraper abuts against the inner wall of the dust filtering cloth bag; the scraper is arranged along the entire height of the dust filtering cloth bag; The scraper is installed on the rotating shaft through a cross plate; the rotating shaft is located on the axis of the dust filtering cloth bag; The top of the rotating shaft passes through the sealing cover plate at the top of the dust filtering cloth bag and is then connected to the rotation driving device; The dust removal device outside the cloth bag includes a pipe rack, nozzles, and a lifting driving device; The pipe rack surrounds the outside of the dust filtering cloth bag. The pipe rack is an air pipe, which is closed and through. The pipe rack is connected to an external compressed air source; A number of nozzles are provided on the pipe rack. The nozzles face the outer surface of the dust filtering cloth bag. A number of nozzles are provided outside each dust filtering cloth bag; The nozzles are connected to an external compressed air source through the pipe rack; The pipe rack of the dust removal device outside the cloth bag is installed on a lifting device, and the lifting device drives the pipe rack and the nozzles to move up and down along the outer surface of the dust filtering cloth bag.

2. The dust cleaning device for a bag filter as described in claim 1, characterized in that, A bracket is provided between the cross plate and the scraper of the dust removal device inside the cloth bag, and the scraper is detachably installed on the bracket.

3. The dust cleaning device for a bag filter as claimed in claim 1 or 2, characterized in that, A number of sets of scrapers are provided, and the horizontal projections of the scrapers are symmetric or evenly distributed.

4. The dust cleaning device for a bag filter according to claim 1 or 2, characterized in that, The scraper and the cross plate are vertically arranged.

5. The dust cleaning device for a bag filter as claimed in claim 1, wherein, The rotation driving device is a belt drive; A driving wheel is sleeved on the top of the rotating shaft. The driving wheels at the tops of the rotating shafts in a number of dust filtering cloth bags are connected together through a rotating belt, and the rotating belt is connected to the driving wheel of the scraper rotation driving motor.

6. The dust cleaning device for a bag filter as described in claim 5, characterized in that, The driving wheel is a synchronous pulley, and the rotating belt is a synchronous belt.

7. The dust cleaning device for a bag filter according to claim 1, characterized in that, A number of guide wheels are provided on the pipe rack of the dust removal device outside the cloth bag; The guide wheels cooperate with the vertical rods of the equipment support to form a vertical movement limiting and guiding mechanism.

8. The dust cleaning device for a bag filter as described in claim 1, characterized in that, The lifting device of the dust removal device outside the cloth bag is that the outside of the pipe rack is connected to a lifting belt; the bottom of the lifting belt is sleeved on a driving belt pulley, and the driving belt pulley is connected to a lifting driving motor; The top of the lifting belt is sleeved on a follower belt pulley, and the follower belt pulley is installed on the top of the support.

9. The dust cleaning device for a bag filter as claimed in claim 8, characterized in that, A number of lifting belts are simultaneously connected along the outside of the pipe rack, and each lifting belt is supported and installed through 1 driving belt pulley and 1 follower belt pulley; The driving belt pulleys of a number of lifting belts are installed on the same driving shaft, and the driving shaft is connected to the output end of the lifting driving motor.