Cloth bag type dust removal device

Abstract

The invention relates to the technical field of dust removal equipment, and discloses a cloth bag type dust removal device which comprises a dust removal box body, a dust collection hopper is arranged on the lower side of the dust removal box body, a partition plate is arranged in the dust removal box body, and an air purification chamber and a filtering chamber are formed in the dust removal box body and located above and below the partition plate respectively. A dust-containing air inlet is formed in one side of the filtering chamber, a purified air outlet is formed in one side of the air purifying chamber, the side wall of the partition plate is in sliding fit with the inner wall of the dust removal box body, a driving mechanism used for driving the partition plate to slide up and down along the dust removal box body is arranged at the top of the dust removal box body, and a plurality of dust removal filter bags are arranged in the filtering chamber. And a turnover cleaning mechanism for cleaning the dust removal filter bag is also arranged between the air purification chamber and the partition plate. Dust on the outer wall of the dust removal filter bag can be conveniently and effectively cleaned, the cleaning effect is good, shutdown operation is not needed in the cleaning process, normal work of equipment cannot be affected, energy consumption is small, cost is low, and the service life is long.

Description

Technical Field

[0001] The present invention relates to the technical field of dust removal equipment, and in particular to a bag-type dust removal device. Background Art

[0002] Enterprises generate a lot of dust during the processing and production process. If this dust is directly discharged, it will damage the environment and endanger human health. Therefore, it is necessary to filter the dust in the air. Existing technology usually uses filter cartridges or filter bags to filter dust.

[0003] The existing dust removal methods mainly include dry dust removal and wet dust removal. Due to the defects of wet dust removal such as high energy consumption, large water consumption, and complex sewage treatment, dry dust removal is becoming more and more popular. Among dry dust removal, bag-type dust removal devices are widely used due to their high dust removal efficiency, low energy consumption and long service life. However, after long-term continuous use, a lot of dust will adhere to the outside of the bag of traditional bag-type dust removal devices. If this dust is not cleaned in time, it will cause blockage inside the device, affecting the effect and efficiency of dust cleaning. Bag-type dust collectors on the market usually use high-frequency vibration or pulse injection systems to remove dust deposited on the surface of the filter bag to restore its filtering capacity. However, high-frequency mechanical vibration not only easily causes fatigue and fracture of the filter bag fibers, but also produces strong vibration and noise. Pulse injection not only consumes a large amount of clean gas, but also makes it difficult to ensure that the injection airflow fully and evenly covers the surface of the filter bag, resulting in poor cleaning effect.

[0004] Chinese patent CN204768047U discloses a cartridge dust collector in the field of dust removal devices, comprising a dust removal box, a dust collecting hopper being provided at the lower side of the dust removal box, a dust air inlet being provided on the lower end wall of the dust removal box, and an air exhaust port being provided on the upper side wall. A partition plate is provided inside the dust removal box, and a clean air chamber and a dust filter chamber are formed above and below the partition plate inside the dust removal box, respectively. A filter cartridge is vertically provided in the dust filter chamber, and the upper end opening of the filter cartridge is connected to the clean air chamber. A guide plate is correspondingly provided in the dust filter chamber, and a nozzle is provided corresponding to each filter cartridge in the clean air chamber, and the jet direction of the nozzle is set corresponding to the opening of the filter cartridge. The air inlet of the nozzle is connected to the air outlet of the spray rod, and the air inlet of the spray rod is connected to the air storage bag via an electromagnetic valve. The control interface of the electromagnetic valve is electrically connected to the pulse controller. The dust removal box has a compact structure, is easy to clean, has high dust removal efficiency, is environmentally friendly and clean, and can be used for filtering and collecting dust in grain transportation and processing processes.

[0005] The device uses multiple rows of nozzles, that is, back-blowing the bags through nozzles above each bag to clean the dust in the bags. However, the nozzle airflow pressure will gradually decrease from the center to the edge of the filter cartridge, resulting in incomplete cleaning of the dust at the bottom edge of the bag. If the airflow pressure at the edge of the filter cartridge is increased by increasing the nozzle airflow pressure, the airflow impact at the center of the bottom of the bag will be overloaded, thereby accelerating the wear of the bottom of the bag. In addition, the dust collector cannot work normally during the back-blowing process, which greatly affects production efficiency. Summary of the Invention

[0006] The purpose of the present invention is to provide a bag-type dust removal device, which can easily and effectively clean the dust on the outer wall of the dust filter bag, and there is no need to stop the operation during the cleaning process, which will not affect the normal operation of the equipment. Not only is the cleaning effect good, but the dust filter bag will not be greatly impacted during the cleaning process. The probability of damage to the dust filter bag is smaller, the service life is longer, and the use of high-pressure cleaning gas can be effectively avoided, which greatly reduces energy consumption and cost, and is more economical and environmentally friendly.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions:

[0008] A bag-type dust collector comprises a dust collection box, a dust collecting hopper is provided at the lower side of the dust collection box, a partition plate is provided inside the dust collection box, and a clean air chamber and a filter chamber are formed inside the dust collection box above and below the partition plate, respectively. A dust-laden air inlet is provided on one side of the filter chamber, and a clean air outlet is provided on one side of the clean air chamber. The side wall of the partition plate slides with the inner wall of the dust collection box, and a driving mechanism for driving the partition plate to slide up and down along the dust collection box is provided on the top of the dust collection box. A plurality of dust filter bags are provided in the filter chamber, and a folding and cleaning mechanism for cleaning the dust filter bags is also provided between the clean air chamber and the partition plate. The upper end of the dust filter bag is connected to the partition plate after being folded by the folding and cleaning mechanism, and the inner cavity of the dust filter bag is connected to the clean air chamber.

[0009] The dust collecting box is cleaned by the filter bag and the filter bag is then cleaned by the filter bag and the filter bag is then cleaned.

[0010] The present invention is further configured as follows: a plurality of mounting holes are also provided on the partition plate, and the folding and cleaning mechanism includes a plurality of limiting rings arranged at positions above the partition plate and opposite to the mounting holes, and each limiting ring is fixedly connected to the dust removal box through a support rod, and the upper end of each dust filter bag respectively passes through the mounting hole and the limiting ring corresponding to the mounting hole, then bypasses the limiting ring and folds back in reverse, and the upper end of each dust filter bag is fixedly connected to the partition plate after being folded back in reverse.

[0011] The present invention is further configured as follows: the folding cleaning mechanism also includes an annular cleaning brush fixed on the partition plate, the inner wall of the annular cleaning brush is provided with bristles, the bristles are wrapped around the outer wall of the dust filter bag and abut against the outer wall of the dust filter bag.

[0012] By adopting the above technical solution, the mounting holes on the partition plate can ensure that the inner cavity of the dust filter bag located below the partition plate can be effectively connected with the clean air chamber, thereby realizing the dust removal function. The design of the limit ring ensures that the dust filter bag is stable and reliable during the folding process. The limit ring is fixed to the dust collection box through the support rod, so that the position of the limit ring remains unchanged, thereby ensuring that the port of the dust filter bag can be driven to fold up and down synchronously during the up and down movement of the partition plate, thereby ensuring that the outer wall of the dust filter bag can move relative to the annular cleaning brush fixed on the partition plate, so that the annular cleaning brush can clean the dust filter. The dust on the outer wall of the bag is effectively removed. Compared with traditional cleaning methods such as pulse jetting or vibration, the annular cleaning brush can evenly cover the surface of the dust filter bag and clean the surface of the dust filter bag with a constant pressure, which makes the cleaning effect better and will not cause a large impact on the overall or local dust filter bag, making the probability of dust filter bag damage smaller, thereby extending the service life of the dust filter bag. In addition, through the implementation of mechanical cleaning methods, the use of high-pressure cleaning gas can be effectively avoided, which greatly reduces energy consumption and costs, and improves the economy and environmental protection of the overall dust removal system.

[0013] The present invention is further configured as follows: a bag-supporting spring is provided in each of the dust filter bags, one end of the bag-supporting spring is fixed to the top wall of the clean air chamber, and the other end of the bag-supporting spring is against the bottom of the dust filter bag.

[0014] By adopting the above technical solution, the bag-supporting spring utilizes its elastic deformation characteristics to quickly expand or contract when subjected to force, thereby providing stable support and restoring force, and ensuring that the dust filter bag always remains expanded and tensioned during the dust removal and folding cleaning process. It can not only effectively prevent the dust filter bag from collapsing during the filtration process and affecting the filtration effect, but also effectively prevent the dust filter bag from collapsing during the cleaning process, resulting in the annular cleaning brush being unable to contact the surface of the cleaning filter bag, thereby resulting in the inability to effectively clean the dust. Therefore, the setting of the bag-supporting spring can further improve the reliability of the equipment's dust removal and cleaning process. At the same time, the bag-supporting spring can also effectively buffer the vibration of the filter bag during the dust removal and cleaning process, further reducing filter bag wear.

[0015] The present invention is further configured such that the diameter of the bag-supporting spring matches the inner diameter of the dust filter bag.

[0016] By adopting the above technical solution, the outer wall of the bag-supporting spring can fit tightly against the inner wall of the dust filter bag, ensuring that the filter bag always maintains a stable shape during operation, further improving the dust removal efficiency and dust cleaning effect.

[0017] The present invention is further configured as follows: outer walls of the pocket spring and the limiting ring are both covered with a wear-resistant soft cover.

[0018] By adopting the above technical solution, the wear-resistant soft cover material is soft and tough, which can not only resist friction loss, but also has good sound absorption characteristics. It can not only effectively reduce the wear of the bag support spring and the limit ring on the dust filter bag, further extend the service life of the dust filter bag, and reduce the maintenance cost of the equipment, but also effectively reduce the noise during operation, improve the stability of equipment operation, and ensure that the dust removal system remains in an efficient and stable working state during long-term use.

[0019] The present invention is further configured as follows: the driving mechanism includes a driving cylinder, the driving cylinder is fixed to the top of the dust removal box, and the telescopic shaft of the driving cylinder is fixedly connected to the partition plate.

[0020] By adopting the above technical solution, the telescopic shaft of the driving cylinder drives the partition plate to move up and down when it is extended and retracted, driving the annular cleaning brush to efficiently clean the dust filter bag, ensuring that the cleaning process is accurate and controllable, with a simple structure, convenient operation and low manufacturing cost.

[0021] The present invention is further configured as follows: a wear-resistant rubber ring is provided on the outer wall of the partition plate, and the wear-resistant rubber ring is tightly fitted to the inner wall of the dust removal box.

[0022] By adopting the above technical solution, the wear-resistant rubber ring can effectively reduce the wear of the partition plate on the inner wall of the box during movement, extend the service life of the equipment, and at the same time further reduce the noise of the equipment operation during the cleaning process, improve the overall operation stability, and ensure the long-term efficient and stable operation of the dust removal system.

[0023] The present invention is further configured as follows: the upper end of the support rod is fixedly connected to the limiting ring, and the lower end of the support rod passes through the partition plate and is fixedly connected to the support shaft fixed to the lower end of the dust removal box.

[0024] By adopting the above technical solution, after the support rod is fixedly connected to the dust removal box through the support shaft, the support rod and the limit ring at the upper end always maintain a stable position during the dust removal and dust cleaning process. At the same time, the support shaft can also guide the partition plate during the up and down movement of the partition plate to clean the dust filter, so that the partition plate has better stability during the up and down movement.

[0025] The present invention is further configured as follows: the dust collecting hopper includes a conical hopper body, a dust discharge port is provided at the bottom of the conical hopper body, and a dust discharge valve is provided at the dust discharge port.

[0026] By adopting the above technical solution, the inclined design of the conical bucket body allows the dust to slide smoothly to the ash discharge port, avoiding dust accumulation, ensuring a smooth and efficient ash discharge process, and further improving the overall performance and cleaning effect of the dust removal system.

[0027] The beneficial effects of the present invention are:

[0028] The dust collecting bag is cleaned by the filter bag by the driving mechanism, and the dust collecting bag is cleaned by the folding cleaning mechanism at regular intervals. The dust on the outer wall of the dust filter bag is cleaned effectively, and the dust collecting bag always maintains a good dust filtering effect. There is no need to stop the operation during the cleaning process, and the normal dust collection work of the equipment is not affected, which greatly improves the production efficiency. At the same time, the partition plate can also clean the inner wall of the dust collecting box in the process of sliding up and down along the dust collecting box, effectively preventing dust from accumulating on the inner wall of the dust collecting box, extending the service life of the equipment, making the dust collection efficiency of the equipment higher, and ensuring the continuous and stable production process. In addition, the position of the partition plate controlled by the driving mechanism can also control the folding state of the dust filter bag and adjust the space ratio between the clean air chamber and the filter chamber, so that the filtering effect and cleaning efficiency are optimally balanced, further ensuring the efficient and stable operation of the equipment.

[0029] 2. The mounting hole on the partition plate of the present invention can ensure that the inner cavity of the dust filter bag located below the partition plate can be effectively connected with the clean air chamber, thereby realizing the dust removal function. The design of the limit ring ensures that the dust filter bag is stable and reliable during the folding process. The limit ring is fixed in the dust collection box through the support rod, so that the position of the limit ring remains unchanged, thereby ensuring that the port of the dust filter bag can be driven to fold up and down synchronously during the up and down movement of the partition plate, thereby ensuring that the outer wall of the dust filter bag can move relative to the annular cleaning brush fixed on the partition plate, so that the annular cleaning brush can clean the outer wall of the dust filter bag The dust on the filter bag can be effectively removed. Compared with traditional cleaning methods such as pulse jetting or vibration, the annular cleaning brush can evenly cover the surface of the dust filter bag and clean the surface of the dust filter bag with a constant pressure, so that the cleaning effect is better, and it will not cause a large impact on the dust filter bag as a whole or locally, making the probability of dust filter bag damage smaller, thereby extending the service life of the dust filter bag. In addition, through the implementation of mechanical cleaning methods, the use of high-pressure cleaning gas can be effectively avoided, which greatly reduces energy consumption and cost, and improves the economy and environmental protection of the overall dust removal system.

[0030] 3. The bag-supporting spring in the present invention utilizes its elastic deformation characteristics to be able to quickly expand or contract when subjected to force, thereby providing stable supporting force and restoring force, and can ensure that the dust filter bag always remains expanded and tensioned during the dust removal and folding cleaning process. It can not only effectively prevent the dust filter bag from collapsing during the filtration process and affecting the filtration effect, but also effectively prevent the dust filter bag from collapsing during the cleaning process, resulting in the annular cleaning brush being unable to contact the surface of the cleaning filter bag, thereby resulting in the inability to effectively clean the dust. Therefore, the setting of the bag-supporting spring can further improve the reliability of the dust removal and cleaning process of the equipment. At the same time, the bag-supporting spring can also effectively buffer the vibration of the filter bag during the dust removal and cleaning process, and further reduce filter bag wear.

[0031] 4. The wear-resistant soft sleeve on the outer wall of the bag-supporting spring and the limiting ring in the present invention can not only resist friction loss, but also has good sound absorption characteristics. It can not only effectively reduce the wear of the bag-supporting spring and the limiting ring on the dust filter bag, further extend the service life of the dust filter bag, and reduce the maintenance cost of the equipment, but also effectively reduce the noise during operation, improve the stability of the equipment operation, and ensure that the dust removal system remains in an efficient and stable working state during long-term use.

[0032] 5. The wear-resistant rubber ring on the outer wall of the partition plate in the present invention can effectively reduce the wear of the partition plate on the inner wall of the box during movement, thereby extending the service life of the equipment. At the same time, it can further reduce the noise of the equipment during cleaning, improve the overall operation stability, and ensure that the dust removal system can work efficiently and stably for a long time.

[0033] 6. In the present invention, after the support rod is fixedly connected to the dust removal box through the support shaft, the support rod and the limiting ring at the upper end always maintain a stable position during the dust removal and dust cleaning process. At the same time, the support shaft can also guide the partition plate during the up and down movement of the partition plate to clean the dust filter, so that the partition plate has better stability during the up and down movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 It is a schematic cross-sectional structure diagram of a bag-type dust removal device of the present invention.

[0036] Figure 2 yes Figure 1 A partial enlarged schematic diagram of the middle A.

[0037] In the figure, 1. Dust removal box; 2. Dust collecting hopper; 21. Conical hopper body; 22. Ash discharge port; 23. Ash discharge valve; 3. Partition plate; 4. Clean air chamber; 5. Filter chamber; 6. Dust-laden air inlet; 7. Clean air outlet; 8. Driving mechanism; 81. Driving cylinder; 9. Dust filter bag; 10. Folding cleaning mechanism; 101. Limiting ring; 102. Support rod; 103. Annular cleaning brush; 104. Support shaft; 11. Mounting hole; 12. Bag support spring. DETAILED DESCRIPTION

[0038] The technical solutions of the present invention will be described clearly and completely below with reference to specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0039] like Figure 1 and Figure 2 The figure shows a bag-type dust removal device, comprising a dust removal box 1, a dust collecting hopper 2 is provided at the lower side of the dust removal box 1, a partition plate 3 is provided inside the dust removal box 1, and a clean air chamber 4 and a filter chamber 5 are formed above and below the partition plate 3 inside the dust removal box 1 respectively. A dust-laden air inlet 6 is provided on one side of the filter chamber 5, and a clean air outlet 7 is provided on one side of the clean air chamber 4. The side wall of the partition plate 3 slides with the inner wall of the dust removal box 1. A driving mechanism 8 is provided on the top of the dust removal box 1 for driving the partition plate 3 to slide up and down along the dust removal box 1. A plurality of dust filter bags 9 are provided in the filter chamber 5, and a folding and cleaning mechanism 10 for cleaning the dust filter bags 9 is also provided between the clean air chamber 4 and the partition plate 3. The upper end of the dust filter bag 9 is connected to the partition plate 3 after being folded by the folding and cleaning mechanism 10, and the inner cavity of the dust filter bag 9 is connected to the clean air chamber 4.

[0040] Furthermore, the partition plate 3 is provided with a plurality of mounting holes 11, and the folding and cleaning mechanism 10 includes a plurality of limiting rings 101 arranged at positions above the partition plate 3 and opposite to the mounting holes 11, and each limiting ring 101 is fixedly connected to the dust removal box 1 through a support rod 102, and the upper end of each dust filter bag 9 passes through the mounting hole 11 and the limiting ring 101 corresponding to the mounting hole 11, then bypasses the limiting ring 101 and folds back. The upper end of each dust filter bag 9 is folded back and fixedly connected to the partition plate 3.

[0041] Furthermore, the folding cleaning mechanism 10 also includes an annular cleaning brush 103 fixed on the partition plate 3, and the inner wall of the annular cleaning brush 103 is provided with bristles, and the bristles are wrapped around the outer wall of the dust filter bag 9 and abut against the outer wall of the dust filter bag 9.

[0042] Furthermore, each of the dust filter bags 9 is provided with a bag-supporting spring 12 , one end of the bag-supporting spring 12 is fixed to the top wall of the clean air chamber 4 , and the other end of the bag-supporting spring 12 is against the bottom of the dust filter bag 9 .

[0043] Furthermore, the diameter of the bag-supporting spring 12 matches the inner diameter of the dust filter bag 9 .

[0044] Furthermore, the outer walls of the support spring 12 and the limiting ring 101 are both covered with a wear-resistant soft cover.

[0045] Furthermore, the driving mechanism 8 includes a driving cylinder 81 , which is fixed to the top of the dust removal box 1 , and a telescopic shaft of the driving cylinder 81 is fixedly connected to the partition plate 3 .

[0046] Furthermore, a wear-resistant rubber ring is provided on the outer wall of the partition plate 3 , and the wear-resistant rubber ring is tightly fitted with the inner wall of the dust removal box 1 .

[0047] Furthermore, the upper end of the support rod 102 is fixedly connected to the limiting ring 101 , and the lower end of the support rod 102 passes through the partition plate 3 and is fixedly connected to the support shaft 104 fixed to the lower end of the dust removal box 1 .

[0048] Furthermore, the dust collecting hopper 2 includes a conical hopper body 21 , a dust discharge port 22 is provided at the bottom of the conical hopper body 21 , and a dust discharge valve 23 is provided at the dust discharge port 22 .

[0049] The working principle of the present invention is as follows: dust-laden air enters the filter chamber 5 from the dust-laden air inlet 6, and the clean gas after being filtered by the dust filter bag 9 enters the clean air chamber 4, and is finally discharged through the clean air outlet 7. When the dust filter bag 9 needs to be cleaned, the telescopic shaft of the driving cylinder 81 in the driving mechanism 8 extends and drives the partition plate 3 to slide downward along the dust removal box 1. During the downward movement of the partition plate 3, the port of the dust filter bag 9 is driven to fold downward, so that the outer wall of the dust filter bag 9 and the annular cleaning brush 103 fixed on the partition plate 3 move relative to each other, so that the annular cleaning brush 103 can effectively remove the dust on the outer wall of the dust filter bag 9. In this process, the bag support spring 12 is gradually squeezed and accumulates elastic potential energy. When the dust is cleaned, the telescopic shaft of the driving cylinder 81 in the driving mechanism 8 contracts, and drives the partition plate 3 to slide upward along the dust removal box 1. During the upward movement of the partition plate 3, the port of the dust filter bag 9 is driven to move upward. The elastic potential energy of the bag support spring 12 is released during the process, and the bottom end of the dust filter bag 9 is in the bag support The dust collecting bag 9 is cleaned by the spring 12 and the dust collecting bag 9 is cleaned by the spring 12.

Claims

1. A bag-type dust removal device, comprising a dust removal box (1), a dust collecting hopper (2) provided on the lower side of the dust removal box (1), a partition plate (3) provided inside the dust removal box (1), a clean air chamber (4) and a filter chamber (5) formed above and below the partition plate (3) in the dust removal box (1), a dust-laden air inlet (6) provided on one side of the filter chamber (5), and a clean air outlet (7) provided on one side of the clean air chamber (4), characterized in that: The side wall of the partition plate (3) is slidably matched with the inner wall of the dust removal box (1); a driving mechanism (8) for driving the partition plate (3) to slide up and down along the dust removal box (1) is provided on the top of the dust removal box (1); a plurality of dust filter bags (9) are provided in the filter chamber (5); a folding and cleaning mechanism (10) for cleaning the dust filter bags (9) is further provided between the clean air chamber (4) and the partition plate (3); the upper end of the dust filter bag (9) is connected to the partition plate (3) after being folded by the folding and cleaning mechanism (10); and the inner cavity of the dust filter bag (9) is communicated with the clean air chamber (4).

2. The bag-type dust removal device according to claim 1, characterized in that: The partition plate (3) is also provided with a plurality of mounting holes (11). The folding and cleaning mechanism (10) comprises a plurality of limiting rings (101) provided above the partition plate (3) at positions opposite to the respective mounting holes (11). Each limiting ring (101) is fixedly connected to the dust removal box (1) via a support rod (102). The upper end of each dust filter bag (9) passes through the mounting hole (11) and the limiting ring (101) corresponding to the mounting hole (11), then passes around the limiting ring (101) and folds in the reverse direction. The upper end of each dust filter bag (9) is folded in the reverse direction and fixedly connected to the partition plate (3).

3. The bag-type dust removal device according to claim 2, characterized in that: The folding cleaning mechanism (10) further comprises an annular cleaning brush (103) fixed on the partition plate (3), wherein bristles are provided on the inner wall of the annular cleaning brush (103), and the bristles are wrapped around the outer wall of the dust filter bag (9) and abut against the outer wall of the dust filter bag (9).

4. The bag-type dust removal device according to claim 3, characterized in that: Each of the dust filter bags (9) is provided with a bag support spring (12), one end of the bag support spring (12) is fixed to the top wall of the clean air chamber (4), and the other end of the bag support spring (12) is against the bottom of the dust filter bag (9).

5. The bag-type dust removal device according to claim 4, characterized in that: The diameter of the bag-supporting spring (12) matches the inner diameter of the dust-removing filter bag (9).

6. The bag-type dust removal device according to claim 5, characterized in that: The outer walls of the support pocket spring (12) and the limiting ring (101) are both covered with a wear-resistant soft sleeve.

7. The bag-type dust removal device according to claim 1, characterized in that: The driving mechanism (8) comprises a driving cylinder (81), the driving cylinder (81) is fixed on the top of the dust removal box (1), and the telescopic shaft of the driving cylinder (81) is fixedly connected to the partition plate (3).

8. The bag-type dust removal device according to claim 1, characterized in that: A wear-resistant rubber ring is provided on the outer wall of the partition plate (3), and the wear-resistant rubber ring is tightly fitted to the inner wall of the dust removal box (1).

9. The bag-type dust removal device according to claim 2, characterized in that: The upper end of the support rod (102) is fixedly connected to the limiting ring (101), and the lower end of the support rod (102) passes through the partition plate (3) and is fixedly connected to the support shaft (104) fixed to the lower end of the dust removal box (1).

10. The bag-type dust removal device according to claim 1, characterized in that: The dust collecting hopper (2) comprises a conical hopper body (21), a dust discharge port (22) is provided at the bottom of the conical hopper body (21), and a dust discharge valve (23) is provided at the dust discharge port (22).

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