A bag dust collector and dust removal process for decarbonization process

Abstract

The present invention relates to the technical field of dust collectors, and specifically to a bag-type dust collector for a decarbonization process and a dust removal process, the bag-type dust collector for the decarbonization process comprising a dust box, an upper fixed plate and a lower fixed plate are arranged inside the dust box, two sliding plates are arranged between the upper fixed plate and the lower fixed plate, and a plurality of dust removal units are arranged between the upper sliding plate and the upper fixed plate and between the lower sliding plate and the lower fixed plate, the dust removal unit comprises a cylindrical cloth bag and a support platform located on the sliding plate, the support platform comprises an inner boss and a storage cylinder sleeved on the outside of the inner boss, the inner boss is provided with multiple groups of rotating mechanisms, and a reciprocating mechanism is also provided on the dust box, the reciprocating mechanism drives the two sliding plates to slide synchronously and in the same direction, so that the upper cloth bag and the lower cloth bag are alternately extended and retracted, and the rotating mechanism folds the cloth bag at a uniform speed between the storage cylinder and the inner boss or unfolds the cloth bag at a uniform speed to avoid local wear of the cloth bag.

Description

Technical Field

[0001] The invention relates to the technical field of dust collectors, and in particular to a bag dust collector for a decarbonization process and a dust removal process. Background Art

[0002] In the decarbonization process, bag filters are often used to treat dusty flue gas. In the prior art, a bag filter is provided with multiple bags inside, and a fixed support frame is provided inside the bag to prop up the bag. Since the gas flow rate near the bag outlet is fast, the area near the bag outlet is prone to wear, which in turn affects the service life of the bag filter. Summary of the invention

[0003] Based on this, it is necessary to provide a bag dust collector and dust removal process for a decarbonization process in order to address the current technical problem that the bags are easily worn and affect the service life of the bag dust collector.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A bag dust collector for a decarbonization process comprises a dust collection box, wherein an upper fixed plate and a lower fixed plate are arranged inside the dust collection box, and an upper and a lower sliding plate are arranged between the upper fixed plate and the lower fixed plate, and the spacing between the two sliding plates is adjustable, and the sliding plate can slide up and down along the inner wall of the dust collection box, and a plurality of dust collection units extending in the up and down directions are arranged between the upper sliding plate and the upper fixed plate, and between the lower sliding plate and the lower fixed plate, and the dust collection unit comprises a cylindrical bag and a support platform located on the sliding plate, and the support platform comprises an inner boss and a storage cylinder sleeved on the outside of the inner boss, and one end of the bag is closed The inner boss is provided with a first end and the other end is an open end, the closed end of the cloth bag is connected to the upper fixed plate or the lower fixed plate, the open end of the cloth bag is sleeved on the inner boss and is located inside the storage tube, the center of the inner boss is provided with a first air outlet, the sliding plate is provided with a second air outlet, the first air outlet corresponds to the second air outlet, the inner boss is provided with a plurality of sets of rotating mechanisms, and the dust removal box is also provided with a reciprocating motion mechanism, the reciprocating motion mechanism drives the two sliding plates to slide synchronously and in the same direction, so that the upper cloth bag and the lower cloth bag are alternately extended and retracted, and the rotating mechanism folds the cloth bag between the storage tube and the inner boss at a uniform speed or unfolds the cloth bag at a uniform speed.

[0006] Furthermore, each set of rotating mechanisms includes a plurality of rotating cylinders evenly distributed around the circumference of the cloth bag, and the output shaft of each rotating cylinder is connected to a roller, which rotates around a horizontal axis and is in frictional contact with the inner circumference of the cloth bag.

[0007] Furthermore, the dust removal unit also includes a cleaning mechanism, which includes a dust collecting cylinder located on the sliding plate, the dust collecting cylinder is located outside the storage cylinder, and the dust collecting cylinder is used to collect dust on the outer peripheral surface of the cloth bag; the cleaning mechanism also includes an annular air blowing groove located on the inner boss, and the annular air blowing groove corresponds to the inner peripheral surface of the cloth bag.

[0008] Furthermore, the air inlet of the rotating cylinder is connected to an air pipe, which is used to connect to an external air pump. The air pipe is connected to an air blowing pipe, one end of which extends into an annular air blowing groove. A one-way valve is provided in the air blowing pipe, which allows the gas in the air blowing pipe to be discharged only toward the annular air blowing groove.

[0009] Furthermore, dust removal chambers are respectively formed between the upper fixed plate and the upper sliding plate, and between the lower fixed plate and the lower sliding plate. The dust removal box is provided with an air inlet corresponding to the dust removal chamber, and the air inlet is for external smoke to enter; a purification chamber is formed between the two sliding plates, and the dust removal box is provided with an air outlet corresponding to the purification chamber, and the air outlet allows the smoke in the purification chamber to be discharged outward.

[0010] Furthermore, a support spring extending in the up-down direction is provided inside the cloth bag, and the support spring is used to support the inner circumferential surface of the cloth bag. One end of the support spring is connected to the inner boss, and the other end is a free end. The support spring can expand and contract with the expansion and contraction of the cloth bag.

[0011] Furthermore, the reciprocating motion mechanism is provided with two groups, and the two groups of reciprocating motion mechanisms operate synchronously. The reciprocating motion mechanism includes a driving motor, and the output end of the driving motor is transmission-connected to two incomplete gears, the two incomplete gears rotate synchronously, and a screw sleeve is transmission-connected between the two. The screw sleeve extends in the up and down directions, and the interior of the screw sleeve is connected to two upper and lower screws by self-locking threads, and the two screws are respectively connected to a sliding plate; the teeth on the two incomplete gears alternately mesh with the screw sleeve, so that the screw sleeve can rotate reciprocally and move up and down, thereby driving the two screws to reciprocate synchronously up and down.

[0012] Furthermore, a sealing ring is provided between the sliding plate and the inner wall of the dust removal box, and the sealing ring keeps the purification chamber and the dust removal chamber sealed at all times.

[0013] Furthermore, a dust suction mechanism is provided inside the purification chamber, and the dust suction mechanism includes a dust suction pipe. A connecting hole corresponding to the dust collecting cylinder is provided on the sliding plate, and the dust suction pipe is connected with the inside of the dust collecting cylinder through the connecting hole.

[0014] A bag dust removal process for a decarbonization process, using the bag dust collector for the decarbonization process, comprises the following steps:

[0015] S1. Adjust the initial distance between the upper and lower sliding plates according to the flue gas concentration generated by the decarburization process;

[0016] S2, convey the smoke to the dust removal box, and then start the reciprocating mechanism and the rotating mechanism.

[0017] The beneficial effects of the present invention are:

[0018] The bag dust collector and dust removal process for the decarbonization process provided by the present invention are such that when the upper bag contracts, the lower bag extends, and when the upper bag extends, the lower bag contracts. Since the gas in the bag flows out from the first air outlet on the inner boss, the gas flow rate at the position of the bag close to the inner boss is large and thus easily wears out. As the bag extends or contracts, the position of the bag close to the inner boss changes continuously, which can avoid local wear of the bag, extend the service life of the bag, and further extend the service life of the bag dust collector.

[0019] Secondly, the distance between the two sliding plates is adjustable, so that before the dust filter is used, the volume ratio of the dust removal chamber to the purification chamber can be adjusted, so as to adapt to different concentrations of smoke and adjust the filtering efficiency.

[0020] Third, the support spring can expand and contract with the expansion and contraction of the cloth bag. The expansion and contraction of the support spring changes the contact position between the support spring and the inner peripheral surface of the cloth bag, thereby avoiding the support spring blocking the same position of the cloth bag and ensuring the filtering effect of the cloth bag.

[0021] Fourth, as dust will accumulate on the outside of the bag when filtering flue gas, the expansion and contraction of the bag allows the dust on the outer surface to fall into the dust collecting bin. At the same time, blowing air through the annular blowing groove can accelerate the dust from falling into the dust collecting bin and avoid affecting the filtering effect of the bag. It can also be cleaned in real time, realizing non-stop cleaning of the bag dust collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a bag filter for a decarbonization process provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the structure of a dust removal unit in a bag filter for a decarbonization process provided by an embodiment of the present invention;

[0024] Figure 3 A side view of a bag filter for a decarbonization process provided by an embodiment of the present invention;

[0025] Figure 4 for Figure 3 Middle AA section view;

[0026] Figure 5 for Figure 4 A magnified view of the structure at B in the middle;

[0027] Figure 6 A schematic diagram of the structure of a reciprocating motion mechanism in a bag filter for a decarbonization process provided by an embodiment of the present invention;

[0028] Figure 7 A schematic diagram of the internal structure of a dust removal unit in a bag filter for a decarbonization process provided by an embodiment of the present invention;

[0029] Figure 8 A schematic diagram of a sliding plate in a bag filter for a decarbonization process provided by an embodiment of the present invention from a first angle;

[0030] Fig. 9 A second angle schematic diagram of a sliding plate in a bag filter for a decarbonization process provided by an embodiment of the present invention;

[0031] Fig.10 A schematic diagram of the structure of a rotating mechanism in a bag filter for a decarbonization process provided in one embodiment of the present invention.

[0032] in:

[0033] 100, frame; 110, sliding plate; 1101, sealing ring; 1102, connecting hole; 130, reciprocating mechanism; 131, driving motor; 132, transmission gear; 133, incomplete gear; 134, baffle; 135, screw sleeve; 136, screw; 111, second air outlet; 113, connecting hole; 200, dust box; 210, air inlet; 2101, air pipe; 2102, air blowing pipe; 220, air outlet; 230, cloth bag; 241, upper fixing plate; 242, lower fixing plate; 250, storage tube; 251, inner boss; 252, first air outlet; 253, annular air blowing groove; 260, dust collecting tube; 270, supporting spring; 280, rotating cylinder; 290, roller; 300, dust suction tube. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] like Figures 1 to 9As shown, a bag dust collector for a decarbonization process provided by an embodiment of the present invention comprises a dust removal box 200 located on a frame 100, wherein an upper fixed plate 241 and a lower fixed plate 242 are provided inside the dust removal box 200, and an upper and a lower sliding plate 110 are provided between the upper fixed plate 241 and the lower fixed plate 242, and the spacing between the two sliding plates 110 is adjustable, and the sliding plates 110 can slide up and down along the inner wall of the dust removal box 200, and a plurality of dust removal units extending in the up-and-down directions are provided between the upper sliding plate 110 and the upper fixed plate 241, and between the lower sliding plate 110 and the lower fixed plate 242, and the dust removal unit comprises a cylindrical cloth bag 230 and a support platform located on the sliding plate 110, and the support platform comprises an inner boss 251 and a storage cylinder 250 sleeved on the outside of the inner boss 251, and the cloth bag 230 One end is a closed end, and the other end is an open end. The closed end of the cloth bag 230 is connected to the upper fixed plate 241 or the lower fixed plate 242. The open end of the cloth bag 230 is sleeved on the inner boss 251 and is located inside the storage tube 250. The center of the inner boss 251 is provided with a first air outlet 252, and the sliding plate 110 is provided with a second air outlet 111. The first air outlet 252 corresponds to the second air outlet 111. The inner boss 251 is provided with multiple sets of rotating mechanisms. The dust removal box 200 is also provided with a reciprocating mechanism 130. The reciprocating mechanism 130 drives the two sliding plates 110 to slide synchronously and in the same direction, so that the upper cloth bag 230 and the lower cloth bag 230 are alternately extended and retracted. The rotating mechanism folds the cloth bag 230 at a uniform speed between the storage tube 250 and the inner boss 251 or unfolds the cloth bag 230 at a uniform speed. Figure 2 As shown, the inner boss 251 includes two parts, an upper part and a lower part, and each part is provided with a first air outlet 252 .

[0038] In this way, when in use, the upper bag 230 and the lower bag 230 are alternately extended and retracted through the reciprocating mechanism 130. When the bag 230 is retracted, the rotating mechanism folds the retracted part into the storage tube 250 at a uniform speed. When the upper bag 230 is retracted, the lower bag 230 is extended. When the upper bag 230 is extended, the lower bag 230 is retracted. Since the gas in the bag 230 flows out from the first air outlet 252 on the inner boss 251, the gas flow rate at the position of the bag 230 close to the inner boss 251 is large and easy to wear. As the bag 230 is extended or retracted, the position of the bag 230 close to the inner boss 251 is constantly changing, which can avoid local wear of the bag 230, extend the service life of the bag 230, and further extend the service life of the bag dust collector.

[0039] In one embodiment, each set of rotating mechanisms includes a plurality of rotating cylinders 280 uniformly distributed around the cloth bag 230, and the output shaft of each rotating cylinder 280 is connected to a roller 290, which rotates around a horizontal axis and is in frictional contact with the inner circumference of the cloth bag 230. In this way, the cloth bag 230 is folded by the friction of the roller 290. The rotating cylinder 280 belongs to the prior art, and a double piston is arranged inside it. By inflating the chamber of the rotating cylinder 280, the two pistons are driven to move alternately, thereby realizing the forward and reverse rotation of the output shaft.

[0040] In one embodiment, the dust removal unit further includes a dust cleaning mechanism, which includes a dust collecting cylinder 260 located on the sliding plate 110, the dust collecting cylinder 260 is located outside the storage cylinder 250, and the dust collecting cylinder 260 is used to collect dust on the outer peripheral surface of the cloth bag 230; the dust cleaning mechanism also includes an annular air blowing groove 253 located on the inner boss 251, and the annular air blowing groove 253 corresponds to the inner peripheral surface of the cloth bag 230. Since dust will accumulate when filtering smoke outside the cloth bag 230, the expansion and contraction of the cloth bag 230 allows the dust on the outer peripheral surface to fall into the dust collecting cylinder 260, and at the same time, the cloth bag 230 is blown by the annular air blowing groove 253, which can accelerate the dust to fall into the dust collecting cylinder 260 and avoid affecting the filtering effect of the cloth bag 230.

[0041] In one embodiment, the air inlet 210 of the rotating cylinder 280 is connected to an air pipe 2101, and the air pipe 2101 is used to connect to an external air pump (not shown in the figure). The air pipe 2101 is connected to an air blowing pipe 2102, and one end of the air blowing pipe 2102 extends into the annular air blowing groove 253. A one-way valve is provided in the air blowing pipe 2102, and the one-way valve allows the gas in the air blowing pipe 2102 to be discharged only toward the annular air blowing groove 253. The air pump supplies air to the rotating cylinder 280 to realize the rotation of the roller 290, and at the same time, the air pump also supplies air to the annular air blowing groove 253 through the air blowing pipe 2102, so that there is no need to set up an additional air supply mechanism, and dust can be cleaned in real time, so as to realize the non-stop cleaning of the bag dust collector.

[0042] In one embodiment, a dust removal chamber is formed between the upper fixed plate 241 and the upper sliding plate 110, and between the lower fixed plate 242 and the lower sliding plate 110, respectively. The dust removal box 200 is provided with an air inlet 210 corresponding to the dust removal chamber, and the air inlet 210 is for external smoke to enter; a purification chamber is formed between the two sliding plates 110, and the dust removal box 200 is provided with an air outlet 220 corresponding to the purification chamber, and the air outlet 220 allows the smoke in the purification chamber to be discharged outward.

[0043] The distance between the two sliding plates 110 is adjustable, so that before the dust filter is used, the volume ratio of the dust removal chamber to the purification chamber can be adjusted, so as to adapt to different concentrations of smoke and adjust the filtering efficiency. During the dust removal process, the distance between the two sliding plates 110 remains unchanged. During the synchronous sliding up and down of the two sliding plates 110, the volume of the dust removal chamber changes continuously, while the volume of the purification chamber does not change but the position changes. The positions of the air inlet 210 and the air outlet 220 ensure that air can always be inlet and outlet. At this time, it can adapt to the flue gas with a constantly changing air intake to ensure the filtering effect.

[0044] In one embodiment, a support spring 270 extending in the up-down direction is provided inside the cloth bag 230, and the support spring 270 is used to support the inner circumference of the cloth bag 230. One end of the support spring 270 is connected to the inner boss 251, and the other end is a free end. The support spring 270 can be extended and retracted along with the expansion and contraction of the cloth bag 230. The expansion and contraction of the support spring 270 changes the contact position between the support spring 270 and the inner circumference of the cloth bag 230, so as to avoid the support spring 270 blocking the same position of the cloth bag 230 and ensure the filtering effect of the cloth bag 230.

[0045] In one embodiment, the reciprocating motion mechanism 130 is provided with two groups, and the two groups of reciprocating motion mechanisms 130 operate synchronously. Figure 6 As shown, the reciprocating mechanism 130 includes a driving motor 131, and the output end of the driving motor 131 is provided with a fixed gear, which is transmission-connected to two transmission gears 132, and the two transmission gears 132 are respectively synchronously transmission-connected with two incomplete gears 133, so that the two incomplete gears 133 rotate synchronously, and a screw sleeve 135 is transmission-connected between the two, and the screw sleeve 135 extends in the up-down direction, and the interior of the screw sleeve 135 is connected with two upper and lower screw rods 136 through self-locking threads, and the two screw rods 136 are respectively connected to a sliding plate 110; the teeth on the two incomplete gears 133 are alternately meshed with the screw sleeve 135, so that the screw sleeve 135 can reciprocate and move up and down, thereby driving the two screw rods 136 to reciprocate synchronously up and down. The dust removal box 200 is provided with a baffle 134, which shields the screw sleeve 135 and the screw rod 136.

[0046] The screw 136 corresponds to the connection hole 113 provided on the sliding plate 110, and the screw 136 is detachably fixedly connected to the sliding plate 110. The interior of the screw sleeve 135 is provided with two sections of reverse threads, and the screw 136 is provided with a self-locking thread. Before the bag dust collector is used, the distance between the two screws 136 can be adjusted by manually rotating the screw sleeve 135, thereby adjusting the distance between the two sliding plates 110. When the bag dust collector is in use, the screw 136 and the screw sleeve 135 are self-locked, so that the screw 136 only moves up and down with the screw sleeve 135 without rotating, thereby driving the two sliding plates 110 to move synchronously and in the same direction.

[0047] In other embodiments, if there is no need to adjust the spacing between the two sliding plates 110, two rotating rods can be rotatably set inside the screw sleeve 135, an annular groove is set inside the screw sleeve 135, and an annular platform is set on the rotating rod. The annular platform can rotate around the annular groove, and the annular platform and the annular groove are stopped and cooperated in the axial direction of the screw sleeve 135.

[0048] In one embodiment, a sealing ring 1101 is provided between the sliding plate 110 and the inner wall of the dust removal box 200, and the sealing ring 1101 keeps the purification chamber and the dust removal chamber sealed at all times, thus ensuring the filtering effect of the bag filter.

[0049] In one embodiment, a dust suction mechanism (not shown) is provided inside the purification chamber, and the dust suction mechanism includes a dust suction pipe 300. The sliding plate 110 is provided with a connecting hole 1102 corresponding to the dust collecting cylinder 260, and the dust suction pipe 300 is connected with the inside of the dust collecting cylinder 260 through the connecting hole 1102. In this way, the dust accumulated in the dust collecting cylinder 260 can be sucked out by the dust suction mechanism to avoid excessive dust accumulation.

[0050] In combination with the above embodiments, the use principle and working process of the embodiments of the present invention are as follows:

[0051] Initially, the distance between the two screws 136 inside the screw sleeve 135 is manually adjusted according to the concentration of the flue gas, thereby adjusting the distance between the upper and lower sliding plates 110. Then the driving mechanism and the air pump are started, the air pump drives the rotating cylinder 280 to operate, the roller 290 starts to rotate alternately forward and reversely, and the driving mechanism causes the two sliding plates 110 to slide synchronously and upward and downward. At the same time, the flue gas is introduced into the two dust removal chambers through the two air inlets 210, so that the intake amount of the flue gas is proportional to the volume of the dust removal chamber.

[0052] When the upper cloth bag 230 contracts, the lower cloth bag 230 extends, and when the upper cloth bag 230 extends, the lower cloth bag 230 contracts; when the cloth bag 230 contracts, the roller 290 rotates forward to fold the cloth bag 230 at a uniform speed between the storage tube 250 and the inner boss 251, and when the cloth bag 230 extends, the roller 290 rotates reversely to unfold the cloth bag 230 at a uniform speed. The smoke enters the interior of the cloth bag 230 after being filtered by the cloth bag 230, and enters the purification chamber from the first air outlet 252 of the inner boss 251 and the second air outlet 111 of the sliding plate 110, and is finally discharged from the air outlet 220 of the purification chamber, thereby completing the dust removal operation of the decarbonization process.

[0053] A bag dust removal process for a decarbonization process, using the bag dust collector for a decarbonization process in the above embodiment, comprises the following steps:

[0054] S1. Adjust the initial distance between the upper and lower sliding plates 110 according to the flue gas concentration generated by the decarbonization process;

[0055] S2. The smoke is transported to the dust removal box 200, and then the reciprocating mechanism 130 and the rotating mechanism are started.

[0056] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A bag dust collector for a decarbonization process, characterized in that: The invention comprises a dust collecting box, wherein an upper fixed plate and a lower fixed plate are arranged inside the dust collecting box, an upper and a lower sliding plate are arranged between the upper fixed plate and the lower fixed plate, the spacing between the two sliding plates is adjustable, the sliding plate can slide up and down along the inner wall of the dust collecting box, a plurality of dust collecting units extending in the up and down directions are arranged between the upper sliding plate and the upper fixed plate, and between the lower sliding plate and the lower fixed plate, the dust collecting unit comprises a cylindrical cloth bag and a support platform located on the sliding plate, the support platform comprises an inner boss and a storage cylinder sleeved on the outside of the inner boss, one end of the cloth bag is a closed end, and the other end is The open end and the closed end of the cloth bag are connected to the upper fixed plate or the lower fixed plate, the open end of the cloth bag is sleeved on the inner boss and located inside the storage tube, the center of the inner boss is provided with a first air outlet, the sliding plate is provided with a second air outlet, the first air outlet corresponds to the second air outlet, the inner boss is provided with multiple sets of rotating mechanisms, and the dust removal box is also provided with a reciprocating motion mechanism, the reciprocating motion mechanism drives the two sliding plates to slide synchronously and in the same direction, so that the upper cloth bag and the lower cloth bag are alternately extended and retracted, and the rotating mechanism folds the cloth bag at a uniform speed between the storage tube and the inner boss or unfolds the cloth bag at a uniform speed.

2. The bag filter for decarbonization process according to claim 1 is characterized in that: Each set of rotating mechanisms includes a plurality of rotating cylinders evenly distributed around the circumference of the cloth bag, and the output shaft of each rotating cylinder is connected to a roller, which rotates around a horizontal axis and is in frictional contact with the inner circumference of the cloth bag.

3. The bag filter for decarbonization process according to claim 2, characterized in that: The dust removal unit also includes a cleaning mechanism, which includes a dust collecting cylinder located on the sliding plate, the dust collecting cylinder is located outside the storage cylinder, and the dust collecting cylinder is used to collect dust on the outer peripheral surface of the cloth bag; the cleaning mechanism also includes an annular air blowing groove located on the inner boss, and the annular air blowing groove corresponds to the inner peripheral surface of the cloth bag.

4. The bag filter for decarbonization process according to claim 3 is characterized in that: The air inlet of the rotating cylinder is connected to an air pipe, and the air pipe is used to connect to an external air pump. The air pipe is connected to an air blowing pipe, one end of which extends into the annular air blowing groove. A one-way valve is provided in the air blowing pipe, and the one-way valve allows the gas in the air blowing pipe to be discharged only toward the annular air blowing groove.

5. The bag dust collector for decarbonization process according to claim 3 is characterized in that: A dust removal chamber is formed between the upper fixed plate and the upper sliding plate, and between the lower fixed plate and the lower sliding plate, respectively. The dust removal box is provided with an air inlet corresponding to the dust removal chamber, and the air inlet is for external smoke to enter; a purification chamber is formed between the two sliding plates, and the dust removal box is provided with an air outlet corresponding to the purification chamber, and the air outlet allows the smoke in the purification chamber to be discharged outward.

6. The bag dust collector for decarbonization process according to claim 1, characterized in that: A support spring extending in the up-down direction is provided inside the cloth bag, and the support spring is used to support the inner circumference of the cloth bag. One end of the support spring is connected to the inner boss, and the other end is a free end. The support spring can expand and contract with the expansion and contraction of the cloth bag.

7. The bag dust collector for decarbonization process according to claim 1, characterized in that: The reciprocating mechanism is provided with two groups, and the two groups of reciprocating mechanisms run synchronously. The reciprocating mechanism includes a driving motor, and the output end of the driving motor is transmission-connected to two incomplete gears, and the two incomplete gears rotate synchronously, and a screw sleeve is transmission-connected between the two. The screw sleeve extends in the up-down direction, and the interior of the screw sleeve is connected to two upper and lower screws through self-locking threads, and the two screws are respectively connected to a sliding plate; the teeth on the two incomplete gears are alternately meshed with the screw sleeve, so that the screw sleeve can reciprocate and move up and down, thereby driving the two screws to reciprocate synchronously up and down.

8. The bag dust collector for decarbonization process according to claim 5, characterized in that: A sealing ring is arranged between the sliding plate and the inner wall of the dust removal box, and the sealing ring keeps the purification chamber and the dust removal chamber sealed at all times.

9. The bag dust collector for decarbonization process according to claim 5, characterized in that: A dust suction mechanism is provided inside the purification chamber, and the dust suction mechanism includes a dust suction pipe. A connecting hole corresponding to the dust collecting cylinder is provided on the sliding plate, and the dust suction pipe is connected with the inside of the dust collecting cylinder through the connecting hole.

10. A bag dust removal process for a decarbonization process, using the bag dust collector for a decarbonization process as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Adjust the initial distance between the upper and lower sliding plates according to the flue gas concentration generated by the decarburization process; S2, convey the smoke to the dust removal box, and then start the reciprocating mechanism and the rotating mechanism.

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