A pulse cleaning auxiliary device for a bag filter and a pulse bag filter

Abstract

The present invention provides a pulse dust cleaning auxiliary device for a bag filter and a pulse bag filter, belonging to the technical field of environmental protection equipment. The pulse dust cleaning auxiliary device for the bag filter comprises a sleeve assembly, a first linkage mechanism and a driving assembly. The sleeve assembly is formed by splicing a plurality of sector-shaped sub-cylinders and is adapted to surround the outer side of the filter bag. A rotating shaft is provided at the top of each sector-shaped sub-cylinder, and the rotating shaft is rotationally matched with the mounting plate of the filter bag. The power output end of the first linkage mechanism is connected to the rotating shaft of the sector-shaped sub-cylinder in the sleeve assembly. The power output end of the driving assembly is connected to the power input end of the first linkage mechanism. The pulse bag filter comprises the above-mentioned auxiliary device. The pulse dust cleaning auxiliary device for the bag filter and the pulse bag filter provided by the present invention can effectively improve the dust cleaning effect at the bottom of the filter bag and effectively reduce secondary dust emission.

Description

Technical Field

[0001] The present invention belongs to the technical field of environmental protection equipment, and particularly relates to a pulse dust cleaning auxiliary device for a bag filter and a pulse bag filter. Background Art

[0002] A bag filter is a highly efficient air purification device widely used in industrial production processes. It captures solid particulate matter in the air through filter bags to achieve the purpose of purifying the gas. However, in practical applications, the bag filter faces a common problem: since the bottom of the bag is close to the gas inlet, the flow wind force in this area is relatively large, making it easier for solid dust particles to quickly accumulate, deposit, and harden, increasing the overall air resistance, causing an increase in pressure drop, and affecting the dust removal and filtration efficiency of the bag filter.

[0003] Currently, the pulse jet method is usually adopted to clean the dust accumulated on the bag. Specifically, nozzles are arranged above the opening of the bag, and high-pressure airflows generated by the instantaneous release of compressed air are used to impact the inner plate of the bag to remove the dust attached thereto.

[0004] However, since the spray nozzles are arranged at the top of the bag and are far from the bottom of the bag, and due to the influence of the bag being permeable throughout, the pressure difference drops relatively quickly during the downward transmission of the high-pressure airflows, resulting in a relatively small pressure of the airflows reaching the bottom, insufficient force, making it difficult to effectively remove the dust accumulated at the bottom, and the dust escapes to the surrounding areas, causing secondary dust generation. Summary of the Invention

[0005] The present invention provides a pulse dust cleaning auxiliary device for a bag filter and a pulse bag filter, aiming to solve the technical problems raised in the above background art.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] In a first aspect, an embodiment of the present invention provides a pulse dust cleaning auxiliary device for a bag filter, including:

[0008] A sleeve assembly formed by splicing a plurality of sector-shaped sub-cylinders and adapted to surround the outside of the filter bag; a rotating shaft is provided at the top of each of the sector-shaped sub-cylinders, and the rotating shaft is rotationally matched with the mounting plate of the filter bag;

[0009] A first linkage mechanism, the power output end of which is connected to the rotating shaft of the sector-shaped sub-cylinder in the sleeve assembly; and

[0010] A driving assembly, the power output end of which is connected to the power input end of the first linkage mechanism;

[0011] Among them, when dust removal operation needs to be carried out on the filter bag, the driving assembly drives the sector-shaped cylinder to rotate a preset angle through the first linkage mechanism, so that an air inlet interval is generated between two adjacent sector-shaped cylinders, enabling the dust-containing flue gas to pass through; before pulse cleaning of the filter bag, the driving assembly drives the sector-shaped cylinder to rotate reversely by a preset angle and reset through the first linkage mechanism to form a closed sleeve.

[0012] In a possible implementation manner of the pulse cleaning auxiliary device for a bag filter provided by the present invention in combination with the first aspect, the side wall of the sector-shaped cylinder is of a double-layer structure with an open bottom. The side wall of the sector-shaped cylinder includes an outer plate and an inner plate. The inner plate and the outer plate are spaced apart, forming an ash channel in the middle. A plurality of ash inlet openings extending in the circumferential direction are spaced apart along the axial direction on the inner plate.

[0013] In a possible implementation manner of the pulse cleaning auxiliary device for a bag filter provided by the present invention in combination with the first aspect, a number of support plates are provided in the ash channel, and the support plates are connected to the inner plate and the outer plate.

[0014] In a possible implementation manner of the pulse cleaning auxiliary device for a bag filter provided by the present invention in combination with the first aspect, the sector-shaped cylinder further includes a plurality of guiding mechanisms, which correspond to the ash inlet openings one by one and are used to guide the dust between the inner plate and the filter bag to the ash inlet openings and enter the ash channel;

[0015] The guiding mechanism includes:

[0016] An upper guide plate, which is inclined, with the lower end connected to the upper side of the ash inlet opening and the upper end spaced from the inner plate;

[0017] A lower guide plate, which is inclined, with the upper end connected to the lower side of the ash inlet opening and the lower end spaced from the inner plate;

[0018] Among them, in two adjacent guiding mechanisms, the lower end of the lower guide plate of the upper guiding mechanism is connected to the upper end of the upper guide plate of the lower guiding mechanism.

[0019] In a possible implementation manner of the pulse cleaning auxiliary device for a bag filter provided by the present invention in combination with the first aspect, the guiding mechanism further includes a flow guiding cover, which is arranged in the ash channel, with the upper end connected to the inner plate on the upper side of the ash inlet opening and the lower end spaced from the inner plate.

[0020] In a possible implementation manner of the pulse cleaning auxiliary device for a bag filter provided by the present invention in combination with the first aspect, the linkage mechanism includes:

[0021] A number of first gears, corresponding to the sector-shaped cylinders one by one, and the first gears are connected to the rotating shaft;

[0022] A ring gear is sleeved outside all the gears. Tooth teeth are provided on both the inner and outer sides of the ring gear, and the inner side of the ring gear meshes with the gears.

[0023] Combined with the first aspect, in a possible implementation manner of the pulse dust cleaning auxiliary device of the bag filter provided by the present invention, it includes a plurality of the sleeve assemblies, and the linkage mechanism corresponds to the sleeve assemblies one by one. The plurality of sleeve assemblies are distributed in several rows and several columns.

[0024] Combined with the first aspect, in a possible implementation manner of the pulse dust cleaning auxiliary device of the bag filter provided by the present invention, the driving component includes a plurality of driving mechanisms, and each driving mechanism drives a column or a row of the linkage mechanisms to move synchronously;

[0025] The driving mechanism includes:

[0026] A tooth row meshes with the outer side of the ring gear in a column or a row of the linkage mechanisms;

[0027] A first driving unit, the power output end of which is connected to the tooth row and is used to drive the tooth row to reciprocate.

[0028] In a second aspect, an embodiment of the present invention further provides a pulse bag filter, including the above-mentioned pulse dust cleaning auxiliary device of the bag filter.

[0029] The beneficial effects of the pulse dust cleaning auxiliary device of the bag filter provided by the present invention are as follows: Compared with the prior art, when the filter bag needs to perform dust removal operations, the driving component drives the sector-shaped sub-cylinder to rotate a preset angle through the first linkage mechanism, so that an air intake interval is generated between two adjacent sector-shaped sub-cylinders, enabling the dust-containing flue gas to pass through and enabling normal dust removal operations; before pulse dust cleaning of the filter bag, the driving component drives the sector-shaped sub-cylinder to rotate reversely by a preset angle and reset through the first linkage mechanism to form a closed sleeve, and then uses the pulse mechanism to blow the filter bag in the reverse direction. At this time, the closed sleeve will effectively limit the escape of the high-pressure air flow, thereby effectively reducing the pressure reduction speed of the high-pressure air flow during the downward transmission process, ensuring that there is still enough pressure to remove the accumulated ash when reaching the bottom of the filter bag; at the same time, the closed sleeve can effectively restrict the escape direction and range of the dust, so that the dust can only be discharged from the bottom of the closed sleeve and enter the ash hopper, effectively reducing secondary dust generation.

[0030] The beneficial effects of the pulse jet bag filter provided by the present invention are as follows: Compared with the prior art, the pulse jet bag filter provided by the present invention is provided with the above-mentioned pulse cleaning auxiliary device for the bag filter, so that the reduction rate of the air pressure during the downward transmission of the high-pressure air flow can be effectively reduced, ensuring that there is still enough pressure to remove the accumulated dust when reaching the bottom of the filter bag; at the same time, the closed sleeve can effectively restrict the dispersion direction and range of the dust, so that the dust can only be discharged from the bottom of the closed sleeve and enter the ash hopper, effectively reducing the secondary dust emission. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 FIG. is a partial three-dimensional structural schematic diagram of the pulse jet bag filter provided by an embodiment of the present invention;

[0032] Figure 2 FIG. is a three-dimensional structural schematic diagram of the sleeve assembly of the pulse cleaning auxiliary device for the bag filter provided by an embodiment of the present invention Figure 1 ;

[0033] Figure 3 FIG. is a three-dimensional structural schematic diagram of the sleeve assembly of the pulse cleaning auxiliary device for the bag filter provided by an embodiment of the present invention Figure 2 ;

[0034] Figure 4 is Figure 3 the enlarged view of part A in

[0035] DESCRIPTION OF THE REFERENCE NUMERALS:

[0036] 10. Sleeve assembly; 11. Sector-shaped sub-cylinder; 111. Inner plate; 112. Outer plate; 113. Ash channel;

[0037] 114. Ash inlet; 115. Support plate; 116. Rotating shaft; 121. Upper guide plate; 122. Lower guide plate;

[0038] 123. Deflector; 21. First gear; 22. Tooth ring; 31. Tooth row; 32. First drive unit;

[0039] 41. Filter bag; 42. Mounting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. 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.

[0041] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually illustrative only and in no way restricts the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0044] In the description of the present application, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the scope of protection of the present application; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0045] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used here to describe the spatial positional relationship of a device or feature shown in the figure with other devices or features. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways, and corresponding interpretations should be made for the spatial relative descriptions used here.

[0046] In addition, it should be noted that the use of terms such as "first", "second" etc. to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of this application.

[0047] Please refer to Figures 1 to 4 together, and now a pulse cleaning auxiliary device for a bag filter provided by the present invention will be described. The pulse cleaning auxiliary device for the bag filter includes a sleeve assembly 10, a first linkage mechanism, and a driving assembly. The sleeve assembly 10 is formed by splicing a plurality of sector-shaped sub-cylinders 11 and is adapted to surround the outside of the filter bag 41. A rotating shaft 116 is provided at the top of each sector-shaped sub-cylinder 11, and the rotating shaft 116 is rotatably matched with the mounting plate 42 of the filter bag 41. The power output end of the first linkage mechanism is connected to the rotating shaft 116 of the sector-shaped sub-cylinder 11 in the sleeve assembly 10. The power output end of the driving assembly is connected to the power input end of the first linkage mechanism.

[0048] Among them, when dust removal operation needs to be performed on the filter bag 41, the driving assembly drives the sector-shaped sub-cylinder 11 to rotate a preset angle through the first linkage mechanism, so that an air intake interval is generated between two adjacent sector-shaped sub-cylinders 11, such as Figure 3 so that the dust-containing flue gas can pass through; before pulse cleaning the filter bag 41, the driving assembly drives the sector-shaped sub-cylinder 11 to rotate reversely by a preset angle and reset through the first linkage mechanism to form a closed sleeve, such as Figure 2 .

[0049] The beneficial effects of the pulse cleaning auxiliary device for the bag filter provided by the embodiments of the present invention are as follows: Compared with the prior art, when the dust removal operation needs to be performed on the filter bag 41, the driving assembly drives the sector-shaped cylinder 11 to rotate a preset angle through the first linkage mechanism, so as to generate an air inlet interval between two adjacent sector-shaped cylinders 11, enabling the dust-containing flue gas to pass through and enabling the normal dust removal operation to be carried out; before the pulse cleaning of the filter bag 41, the driving assembly drives the sector-shaped cylinder 11 to rotate reversely by a preset angle and reset through the first linkage mechanism to form a closed sleeve, and then the pulse mechanism is used to blow the filter bag 41 in the opposite direction. At this time, the closed sleeve will effectively limit the escape of the high-pressure air flow, thereby effectively reducing the reduction speed of the air pressure during the downward transmission of the high-pressure air flow, ensuring that there is still enough pressure to remove the accumulated ash when reaching the bottom of the filter bag 41; at the same time, the closed sleeve can effectively restrict the escape direction and range of the dust, enabling the dust to only be discharged from the bottom of the closed sleeve and enter the ash hopper, effectively reducing the secondary dust emission.

[0050] As Figure 3 and Figure 4 shown, in a specific implementation manner of the pulse cleaning auxiliary device for the bag filter provided by the embodiments of the present invention, the side wall of the sector-shaped cylinder 11 is of a double-layer structure with an open bottom. The side wall of the sector-shaped cylinder 11 includes an outer plate 112 and an inner plate 111. The inner plate 111 and the outer plate 112 are arranged at intervals, and a dust channel 113 is formed in the middle. A plurality of circumferentially extending ash inlet openings 114 are arranged at intervals along the axial direction on the inner plate 111.

[0051] It should be noted that during the reverse blowing, a flow channel is provided for the air flow carrying the dust to facilitate the discharge of the air flow, accelerate the discharge of the dust, and reduce the interference of the upper-side air flow and dust on the reverse blowing effect of the lower side.

[0052] As Figure 4 shown, in a specific implementation manner of the pulse cleaning auxiliary device for the bag filter provided by the embodiments of the present invention, several support plates 115 are arranged in the dust channel 113. The support plates 115 are connected to the inner plate 111 and the outer plate 112 to improve the structural strength of the sector-shaped cylinder 11.

[0053] As Figure 3 and Figure 4 shown, in a specific implementation manner of the pulse cleaning auxiliary device for the bag filter provided by the embodiments of the present invention, the sector-shaped cylinder 11 further includes a plurality of guiding mechanisms, which correspond to the ash inlet openings 114 one by one and are used to guide the dust between the inner plate 111 and the filter bag 41 to the ash inlet openings 114 and into the dust channel 113.

[0054] Specifically, the guiding mechanism includes an upper guiding plate 121 and a lower guiding plate 122. The upper guiding plate 121 is inclined, with its lower end connected to the upper side of the ash inlet 114 and its upper end spaced from the inner plate 111; the lower guiding plate 122 is inclined, with its upper end connected to the lower side of the ash inlet 114 and its lower end spaced from the inner plate 111; among them, in two adjacent guiding mechanisms, the lower end of the lower guiding plate 122 of the upper guiding mechanism is connected to the upper end of the upper guiding plate 121 of the lower guiding mechanism.

[0055] It should be noted that the upper guiding plate 121 and the lower guiding plate 122 are combined to form a funnel structure, guiding the dust-containing air flow into the ash duct 113, enabling more dust-containing air flow to enter the ash duct 113, further reducing the interference of the upper-side air flow and dust on the lower-side backwashing effect, accelerating the dust discharge, and thus further improving the dust cleaning effect.

[0056] As Figure 3 and Figure 4 shown, in a specific implementation manner of the pulse dust cleaning auxiliary device of the bag filter provided in the embodiment of the present invention, the guiding mechanism further includes a flow guiding cover 123. The flow guiding cover 123 is arranged in the ash duct 113, with its upper end connected to the inner plate 111 on the upper side of the ash inlet 114 and its lower end spaced from the inner plate 111.

[0057] Specifically, the inner wall of the flow guiding cover 123 is arc-shaped to better guide the flow direction of the dust-containing air flow after entering the ash duct 113, reduce the collision between the air flow entering the ash duct 113 from the ash inlet 114 and the air flow in the ash duct 113, reduce the kinetic energy loss of the air flow, and the flow guiding cover 123 reduces the cross-sectional area of the ash duct 113, and can form a Venturi effect near the ash inlet 114 to actively suck the air flow into the ash duct 113, further reducing the interference of the upper-side air flow and dust on the lower-side backwashing effect, accelerating the dust discharge; and increasing the pressure difference inside and outside the filter bag 41 to ensure the dust cleaning effect.

[0058] As Figure 1 and Figure 2 shown, in a specific implementation manner of the pulse dust cleaning auxiliary device of the bag filter provided in the embodiment of the present invention, the linkage mechanism includes a plurality of first gears 21 and a gear ring 22. The plurality of first gears 21 correspond to the sector-shaped cylinders 11 one by one, and the first gears 21 are connected to the rotating shafts 116; the gear ring 22 is sleeved outside all the gears, and tooth teeth are provided on both the inner and outer sides of the gear ring 22, and the inner side of the gear ring 22 meshes with the gears.

[0059] It should be noted that the gear ring 22 can be replaced by a double-connected gear, a thick gear, or other parts or mechanisms that can mesh with multiple gears simultaneously and can be driven by a driving element to rotate.

[0060] As Figure 1 and Figure 2As shown in the figure, in a specific embodiment of the pulse cleaning auxiliary device for a bag filter provided by the embodiment of the present invention, it includes a plurality of sleeve assemblies 10. The linkage mechanisms correspond to the sleeve assemblies 10 one by one, and the plurality of sleeve assemblies 10 are distributed in several rows and several columns.

[0061] As Figure 1 and Figure 2 shown in the figure, in a specific embodiment of the pulse cleaning auxiliary device for a bag filter provided by the embodiment of the present invention, the driving assembly includes several driving mechanisms, and each driving mechanism drives a column or a row of linkage mechanisms to move synchronously.

[0062] The driving mechanism includes a toothed row 31 and a first driving unit 32. The toothed row 31 meshes with the outer side of the toothed ring 22 in a column or a row of linkage mechanisms; the power output end of the first driving unit 32 is connected to the toothed row 31 to drive the toothed row 31 to reciprocate.

[0063] It should be noted that in order to ensure the dust removal efficiency, the on-line cleaning method is usually adopted, that is, taking a column or a row of filter bags 41 as a dust removal unit, and only performing the reverse blowing and cleaning operation on the filter bags 41 of one dust removal unit at a time, and cleaning alternately and at staggered times. At this time, the corresponding column or row of sleeve assemblies 10 can be driven by the first driving unit 32 to switch states.

[0064] Specifically, the first driving unit 32 is a cylinder, a hydraulic cylinder, an electric push rod or other devices or mechanisms that can drive the toothed row 31 to reciprocate.

[0065] Based on the same inventive concept, the embodiment of the present invention also provides a pulse bag filter, including the above-mentioned pulse cleaning auxiliary device for a bag filter.

[0066] The beneficial effects of the pulse bag filter provided by the embodiment of the present invention are as follows: Compared with the prior art, the pulse bag filter provided by the embodiment of the present invention is provided with the above-mentioned pulse cleaning auxiliary device for a bag filter. Therefore, it can effectively reduce the pressure reduction speed of the high-pressure air flow during the downward transmission process, and ensure that there is still enough pressure to remove the accumulated ash when reaching the bottom of the filter bag 41; at the same time, the closed sleeve can effectively restrict the escape direction and range of dust, so that the dust can only be discharged from the bottom of the closed sleeve and enter the ash hopper, effectively reducing the secondary dust emission.

[0067] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pulse cleaning auxiliary device for bag filter, characterized in that: include: The sleeve assembly is formed by splicing a plurality of sector-shaped sub-cylinders and is suitable for surrounding the outside of the filter bag; a rotating shaft is provided on the top of each sector-shaped sub-cylinder, and the rotating shaft is rotatably matched with the mounting plate of the filter bag; A first linkage mechanism, the power output end of which is connected to the rotating shaft of the sector-shaped sub-drum in the sleeve assembly; as well as A driving assembly, a power output end of which is connected to a power input end of the first linkage mechanism; Wherein, when the filter bag needs to be dusted, the driving assembly drives the sector-shaped sub-drum to rotate by a preset angle through the first linkage mechanism, so that an air intake gap is generated between two adjacent sector-shaped sub-drums, so that dust-containing smoke can pass through; before pulse cleaning of the filter bag, the driving assembly drives the sector-shaped sub-drum to rotate in the opposite direction by a preset angle and reset through the first linkage mechanism to form a closed sleeve; The side wall of the sector-shaped sub-barrel is a double-layer structure with an opening at the bottom. The side wall of the sector-shaped sub-barrel comprises an outer plate and an inner plate. The inner plate and the outer plate are spaced apart to form an ash channel in the middle. A plurality of ash inlets extending circumferentially are spaced apart along the axial direction on the inner plate.

2. The pulse cleaning auxiliary device for bag filter according to claim 1, characterized in that: A plurality of support plates are arranged in the ash channel, and the support plates are connected to the inner plate and the outer plate.

3. The pulse cleaning auxiliary device for bag filter according to claim 1, characterized in that: The sector-shaped sub-drum also includes a plurality of guide mechanisms, each of which corresponds to the ash inlet one by one, and is used to guide the dust between the inner plate and the filter bag to the ash inlet and into the ash channel; The guiding mechanism comprises: An upper guide plate is arranged obliquely, with a lower end connected to the upper side of the ash inlet and an upper end arranged to be separated from the inner plate; A lower guide plate is arranged obliquely, with an upper end connected to the lower side of the ash inlet and a lower end arranged to be separated from the inner plate; Among the two adjacent guide mechanisms, the lower end of the lower guide plate of the upper guide mechanism is connected to the upper end of the upper guide plate of the lower guide mechanism.

4. The pulse cleaning auxiliary device for bag filter according to claim 3, characterized in that: The guiding mechanism further comprises a guide cover, which is arranged in the ash channel, with an upper end connected to the inner plate on the upper side of the ash inlet and a lower end arranged to be spaced apart from the inner plate.

5. The pulse cleaning auxiliary device for bag filter according to claim 1, characterized in that: The linkage mechanism comprises: A plurality of first gears corresponding to the sector-shaped cylinders one by one, and the first gears are connected to the rotating shaft; A gear ring is sleeved on the outside of all the first gears, and teeth are arranged on both the inner and outer sides of the gear ring. The inner side of the gear ring is meshed with the first gear.

6. The pulse cleaning auxiliary device for bag filter according to claim 5, characterized in that: It comprises a plurality of sleeve assemblies, the linkage mechanism corresponds to the sleeve assemblies one by one, and the plurality of sleeve assemblies are distributed in a plurality of rows and a plurality of columns.

7. The pulse cleaning auxiliary device for bag filter according to claim 6, characterized in that: The driving assembly includes a plurality of driving mechanisms, each of which drives a column or a row of linkage mechanisms to move synchronously; The driving mechanism comprises: a tooth row meshing with the outer side of said ring gear in one row or column of said linkage mechanism; The first driving unit has a power output end connected to the gear row and is used to drive the gear row to reciprocate.

8. A pulse bag dust collector, characterized in that: It comprises a bag filter pulse cleaning auxiliary device as described in any one of claims 1 to 7.

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