A bag filter with an internally vibratable filter bag for shaking off dust

Abstract

The present invention provides a bag dust collector with an internal filter bag capable of vibrating and shaking dust, comprising a shell, a partition plate arranged in the shell, a through hole being provided on the partition plate, a bracket being arranged on a side of the partition plate facing the filter part, a filter bag being arranged outside the bracket, the bracket comprising a plurality of support plates distributed around the outer edge of the through hole, a filter air channel being enclosed between the plurality of support plates, an expansion plate being arranged between the support plate and the filter bag, a first elastic mechanism being arranged in the filter air channel, the first elastic mechanism being connected to the expansion plate so that the expansion plate is retracted inwardly, a driving mechanism being arranged on the top of the shell, the driving mechanism drivingly connecting an extrusion block, the extrusion block being used to move axially along the filter air channel and extruding the first elastic mechanism so that the expansion block is expanded outwardly. The first elastic mechanism is extruded by the extrusion block, driving the expansion plate to expand outwardly and open the filter bag, after the extrusion block is separated from the first elastic mechanism, the expansion plate drives the filter bag to reset, completing the vibration of the filter bag, avoiding dust blocking the filter bag, and ensuring stable filtration of dust.

Description

Technical Field

[0001] The present invention relates to the technical field of dust removal equipment, and particularly to a bag filter with an internally vibratable filter bag for shaking off dust. Background Art

[0002] The main fuel of a coal-fired power plant is coal. A large amount of dust will be generated during the transportation of coal. The dust diffusing in the coal conveying corridor will lead to more potential safety hazards. Generally, a bag filter is set in the coal conveying corridor to remove dust.

[0003] A bag filter is a dry dust filtering device, which is suitable for collecting fine, dry, and non-fibrous dust. A filter bag made of woven filter cloth or non-woven felt is arranged inside the bag filter. When the dust-containing gas enters the bag filter, the dust with large particles and high specific gravity settles down due to the action of gravity and falls into the ash hopper. When the gas containing finer dust passes through the filter bag, the dust is retained by the filter bag, and the gas is purified.

[0004] However, the existing filter bags are generally statically placed inside the bag filter. After the bag filter is used for a long time, too much dust accumulates on the filter bags, which will cause the filter bags to be blocked. It is difficult for the gas with dust to continue to pass through the filter bags for filtration and then be discharged, resulting in a reduction in the filtering effect of the bag filter. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a bag filter with an internally vibratable filter bag for shaking off dust, aiming to solve the technical problem that in the prior art, the filter bags are static and dust is likely to block the filter bags after the bag filter operates for a long time, affecting the filtering effect of the bag filter.

[0006] To achieve the above purpose, the present invention is realized by the following technical solutions:

[0007] A bag dust collector with an internal filter bag that can vibrate and shake out dust, comprises a shell and an ash hopper, the bottom of the shell is connected to the ash hopper, the end of the ash hopper facing away from the shell is connected to a dust processing box, a partition plate is arranged in the shell, the partition plate divides the interior of the shell into a clean air part and a filter part from top to bottom, an air inlet pipe and an air outlet pipe are arranged on the shell, the air inlet pipe is connected to the filter part, and the air outlet pipe is connected to the clean air part, a plurality of through holes evenly distributed at intervals are arranged on the partition plate, a plurality of brackets are arranged on a side of the partition plate facing the filter part, a filter bag is arranged outside the bracket, and the bracket comprises a plurality of support plates evenly distributed at intervals around the outer edges of the through holes, if An air filter channel is enclosed between the support plates, an expansion plate is arranged between the support plate and the filter bag, a first elastic mechanism is arranged in the air filter channel, one end of the first elastic mechanism passes through the support plate and is connected to the expansion plate so that the expansion plate moves from the support plate toward the axial center line of the air filter channel, a plurality of driving mechanisms are arranged on the top of the shell, the driving mechanisms correspond to the positions of the through holes, the driving mechanisms drive the connected extrusion block so that the extrusion block moves back and forth along the axial direction of the air filter channel, and the extrusion block is used to extrude the first elastic mechanism so that the first elastic mechanism moves from the axial center line of the air filter channel toward the support plate.

[0008] Compared with the prior art, the beneficial effect of the present invention is that when the dust-containing gas enters the bag-type dust collector with the internal filter bag and the vibrating and dust-shaking function for dust removal, the dust is blocked on the filter bag. At this time, the extrusion block is driven by the driving mechanism to move downward along the axial direction of the air filter channel, and the first elastic mechanism is squeezed to make the first elastic mechanism move toward the support plate, thereby driving the expansion plate to expand outward and open the filter bag. After the extrusion block is separated from the first elastic mechanism, the first elastic mechanism causes the expansion plate to retract toward the axial center line direction of the air filter channel, and the filter bag is reset, completing the vibration of the filter bag, so that the dust is shaken off, effectively avoiding the situation that dust blocks the filter bag, and ensuring the stable filtration of dust by the bag-type dust collector with the internal filter bag and the vibrating and dust-shaking function.

[0009] Furthermore, the first elastic mechanism includes a connecting rod, a bearing block and a first spring, one end of the connecting rod is connected to the expansion plate, the other end of the connecting rod passes through the support plate and is connected to the bearing block, the connecting rod extends from the expansion plate toward the axial direction of the air filter channel, the first spring is arranged between the support plate and the bearing block, and the first spring is sleeved on the connecting rod.

[0010] Furthermore, the extrusion block includes a smooth portion and a lower arc portion. The bottom of the smooth portion is connected to the lower arc portion. One side of the bearing block facing the partition plate is recessed to form a first pushing groove, and the first pushing groove is used to abut against the outer side wall of the lower arc portion.

[0011] Furthermore, the extrusion block further includes an upper arc portion. The upper arc portion is provided at the top of the smooth portion. One side of the bearing block facing away from the partition plate is recessed to form a second pushing groove, and the second pushing groove is used to abut against the outer side wall of the upper arc portion.

[0012] Furthermore, the driving mechanism includes a driving motor, a lead screw, and a guide rod. The driving motor is provided at the top of the housing. The driving motor is electrically connected to the lead screw. One end of the lead screw facing away from the driving motor extends from the top of the housing towards the ash hopper direction, and the lead screw is located on the axis of the through hole. One end of the guide rod is connected to the top of the housing, and the other end of the guide rod extends from the top of the housing towards the ash hopper direction, and the guide rod is parallel to the lead screw. The extrusion block is sleeved on the lead screw and the guide rod.

[0013] Furthermore, one end of the bracket facing away from the partition plate is connected to a limiting mechanism, and the limiting mechanism is used to prevent the extrusion block from detaching from the lead screw.

[0014] Furthermore, the limiting mechanism includes a support rod and a bearing disc. One end of the support plate facing away from the partition plate is connected to the support rod. The support rod extends from the support plate towards the axis direction of the air filtration channel and is connected to the bearing disc. The bearing disc is located on the axis of the air filtration channel, and one ends of the lead screw and the guide rod facing the ash hopper both abut against the bearing disc.

[0015] Furthermore, the support plate includes a fixed portion and a movable portion. One end of the fixed portion is connected to the partition plate, and the other end of the fixed portion is connected to the movable portion through a second elastic mechanism.

[0016] Furthermore, the second elastic mechanism includes a plurality of second springs. One end of each second spring is connected to the surface of the fixed portion facing the movable portion, and the other end of each second spring is connected to the surface of the movable portion facing the fixed portion.

[0017] Still further, the second elastic mechanism further includes a plugging rod and a plugging column. The plugging column is provided on the surface of the fixed portion facing the movable portion, and the plugging rod is provided on the surface of the movable portion facing the fixed portion. The plugging rod is plugged into the plugging column. Description of the Drawings

[0018] Figure 1It is a schematic structural diagram of a bag filter with an internally vibratable filter bag in an embodiment of the present invention;

[0019] Figure 2 It is a schematic internal structure diagram of a bag filter with an internally vibratable filter bag in an embodiment of the present invention;

[0020] Figure 3 It is Figure 2 a partial enlarged view of part A in

[0021] Figure 4 It is Figure 2 a schematic internal structure diagram of the filter bag in from the first perspective;

[0022] Figure 5 It is Figure 4 a schematic structure diagram of the extrusion block in

[0023] Figure 6 It is Figure 4 a schematic connection structure diagram between the extrusion block and the first elastic mechanism in

[0024] Main element symbol description:

[0025] housing 10 partition board 110 through hole 111 clean air part 120 filter part 130 intake pipe 140 outlet pipe 150 ash hopper 20 dust treatment box 30 bracket 40 support plate 410 fixing part 411 moving part 412 air filtration channel 420 second elastic mechanism 430 second spring 431 inserting rod 432 inserting column 433 filter bag 50 expansion plate 60 first elastic mechanism 70 connecting rod 710 bearing block 720 first pushing groove 721 second pushing groove 722 first spring 730 driving mechanism 80 driving motor 810 lead screw 820 guide rod 830 limiting mechanism 840 supporting rod 841 bearing disc 842 extrusion block 90 smooth part 910 lower arc part 920 upper arc part 930

[0026] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. Specific Embodiments

[0027] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0030] Please refer to Figures 1 to 6 In the bag filter with an internally vibratable filter bag according to the embodiment of the present invention, it includes a housing 10 and a hopper 20. The bottom of the housing 10 is connected to the hopper 20, and one end of the hopper 20 facing away from the housing 10 is connected to a dust treatment box 30. Understandably, the interiors of the housing 10, the hopper 20, and the dust treatment box 30 are interconnected. An intake pipe 140 and an exhaust pipe 150 are provided on the housing 10. The intake pipe 140 is communicated with the filtering part 130, and the exhaust pipe 150 is communicated with the clean air part 120. Preferably, the intake pipe 140 is located at one end of the filtering part 130 facing the hopper 20. When filtering the dust-containing gas, the dust-containing gas enters the filtering part 130. Larger particles of dust fall under the influence of gravity and enter the dust treatment box 30 through the hopper 20. Preferably, the cross-sectional area of the hopper 20 gradually decreases from the housing 10 towards the dust treatment box 30, that is, the hopper 20 is funnel-shaped, so as to prevent the falling dust from staying in the hopper 20 and better enter the dust treatment box 30.

[0031] A partition plate 110 is provided inside the housing 10. The partition plate 110 divides the interior of the housing 10 into a clean air part 120 and a filtering part 130 from top to bottom. A number of through holes 111 evenly distributed at intervals are opened on the partition plate 110. The filtering part 130 and the clean air part 120 are communicated through the through holes 111. A number of brackets 40 are provided on the surface of the partition plate 110 facing the filtering part 130. A filter bag 50 is sleeved outside the brackets 40. When the dust-containing gas entering the filtering part 130 floats up and contacts the filter bag 50, the dust is blocked by the filter bag 50, and the purified gas enters the clean air part 120 and is discharged through the exhaust pipe 150.

[0032] The bracket 40 includes a number of support plates 410 evenly distributed at intervals around the outer edge of the through hole 111. A filter gas channel 420 is formed by enclosing between the number of support plates 410. Understandably, the axis line of the filter gas channel 420 coincides with the axis line of the through hole 111. By providing the bracket 40, the filter bag 50 can be fully expanded, increasing the contact area between the filter bag 50 and the dust-containing gas and improving the filtering effect of the filter bag 50.

[0033] An expansion plate 60 is arranged between the support plate 410 and the filter bag 50, and a first elastic mechanism 70 is arranged in the air filter channel 420. One end of the first elastic mechanism 70 passes through the support plate 410 and is connected to the expansion plate 60 so that the expansion plate 60 moves from the support plate 410 to the axial direction of the air filter channel 420. Specifically, the first elastic mechanism 70 includes a connecting rod 710, a bearing block 720 and a first spring 730. One end of the connecting rod 710 is connected to the expansion plate 60, and the other end of the connecting rod 710 passes through the support plate 410 and is connected to the bearing block 720. The connecting rod 710 extends from the expansion plate 60 to the axial direction of the air filter channel 420. The first spring 730 is arranged between the support plate 410 and the bearing block 720, and the first spring 730 is sleeved on the connecting rod 710. In a normal state, the first spring 730 applies a driving force to the bearing block 720 to move in the axial direction of the air filter channel 420 , thereby causing the expansion plate 60 to abut against the support plate 410 driven by the connecting rod 710 .

[0034] A plurality of driving mechanisms 80 are arranged on the top of the shell 10, and the driving mechanisms 80 correspond to the positions of the through holes 111. The driving mechanisms 80 drive the connected extrusion block 90 so that the extrusion block 90 reciprocates along the axial direction of the air filter channel 420. The extrusion block 90 is used to extrude the first elastic mechanism 70 so that the first elastic mechanism 70 moves from the axis of the air filter channel 420 toward the support plate 410. When the dust-containing gas enters the bag-type dust collector with internal filter bag and capable of vibrating and shaking dust for dust removal, the dust is blocked on the filter bag 50. At this time, the driving mechanism 80 drives the extrusion block 90 to move downward along the axial direction of the air filter channel 420, and squeezes the first elastic mechanism 70, so that the first elastic mechanism 70 moves toward the support plate 410, thereby driving the expansion plate 60 to expand outward and open the filter bag 50. After the extrusion block 90 is separated from the first elastic mechanism 70, the first elastic mechanism 70 causes the expansion plate 60 to retract toward the axial center line direction of the air filter channel 420, and the filter bag 50 is reset, completing the vibration of the filter bag 50, so that the dust is shaken off, effectively avoiding the situation where dust blocks the filter bag 50, and ensuring the stable filtration of dust by the bag-type dust collector with internal filter bag and capable of vibrating and shaking dust.

[0035] The driving mechanism 80 includes a driving motor 810, a screw rod 820 and a guide rod 830. The driving motor 810 is arranged on the top of the housing 10, and the driving motor 810 is electrically connected to the screw rod 820. The driving motor 810 is used to drive the screw rod 820 to rotate axially. One end of the screw rod 820 facing away from the driving motor 810 extends from the top of the housing 10 toward the ash hopper 20, and the screw rod 820 is located on the axis line of the through hole 111. One end of the guide rod 830 is connected to the top of the housing 10, and the other end of the guide rod 830 extends from the top of the housing 10 toward the ash hopper 20, and the guide rod 830 is parallel to the screw rod 820. It can be understood that the screw rod 8 20 and the guide rod 830 are partially placed in the air filter channel 420, and the extrusion block 90 is sleeved on the screw rod 820 and the guide rod 830. When the drive motor 810 drives the screw rod 820 to rotate forward in the axial direction, the extrusion block 90 moves downward in the axial direction of the screw rod 820 under the restriction of the guide rod 830, and enters the air filter copper belt through the through hole 111, and then squeezes the supporting block 720, so that the expansion plate 60 opens the filter bag 50. When the drive motor 810 drives the screw rod 820 to reverse in the axial direction, the extrusion block 90 is separated from the supporting block 720, and the expansion plate 60 is reset under the action of the first spring 730, thereby resetting the filter bag 50 and completing the vibration of the filter bag 50.

[0036] The extrusion block 90 includes a smooth portion 910 and a lower arc portion 920, the bottom of the smooth portion 910 is connected to the lower arc portion 920, and the bearing block 720 is concave toward one side of the partition plate 110 to form a first push groove 721, and the first push groove 721 is used to abut against the outer side wall of the lower arc portion 920, that is, when the extrusion block 90 moves downward along the axial direction of the screw rod 820, the lower arc portion 920 abuts against the first push groove 721, and as the downward movement continues, the smooth portion 910 contacts the bearing block 720, thereby causing the bearing block 720 to move toward the support plate 410 and compress the first spring 730. When the extrusion block 90 moves upward along the axial direction of the screw rod 820 and separates from the bearing block 720, the first spring 730 releases the rebound force.

[0037] Preferably, a plurality of the expansion plates 60 are evenly distributed from top to bottom on the support plate 410, and each of the expansion plates 60 is respectively connected to a first elastic mechanism 70. During the axial downward movement of the extrusion block 90 along the screw rod 820, the first elastic mechanism 70 at different positions is squeezed in turn to complete the expansion and contraction of the expansion plates 60 at different positions, thereby vibrating different positions of the filter bag 50 to improve the dust removal effect.

[0038] Further, to prevent the carrier block 720 from affecting the upward movement of the extrusion block 90 along the axial direction of the lead screw 820 after being reset under the action of the first spring 730, the extrusion block 90 further includes an upper arc portion 930. The upper arc portion 930 is provided at the top of the smooth portion 910. A second push groove 722 is concavely formed on the surface of the carrier block 720 facing away from the partition plate 110. The second push groove 722 is used to abut against the outer side wall of the upper arc portion 930. When the extrusion block 90 moves upward along the axial direction of the lead screw 820, the upper arc portion 930 preferentially abuts against the inside of the second push groove 722. As the upward movement progresses, the smooth portion 910 presses the carrier block 720, compresses the first spring 730, and causes the expansion plate 60 to expand again. It can be understood that by providing the upper arc portion 930 and the second push groove 722, not only can the carrier block 720 be prevented from affecting the movement of the extrusion block 90, but also when the extrusion block 90 reciprocates along the axial direction of the lead screw 820, the filter bag 50 can be vibrated multiple times, making the dust shaking-off more sufficient.

[0039] Preferably, a limiting mechanism 840 is connected to one end of the bracket 40 facing away from the partition plate 110. The limiting mechanism 840 is used to limit the extrusion block 90 from detaching from the lead screw 820. Specifically, the limiting mechanism 840 includes a support rod 841 and a bearing plate 842. One end of the support plate 410 facing away from the partition plate 110 is connected to the support rod 841. The support rod 841 extends from the support plate 410 towards the axis of the air filtration channel 420 and is connected to the bearing plate 842. The bearing plate 842 is located on the axis of the air filtration channel 420, and one ends of the lead screw 820 and the guide rod 830 facing the ash hopper 20 both abut against the bearing plate 842. When the extrusion block 90 moves downward along the axial direction of the lead screw 820, after completing the extrusion and expansion of several first elastic mechanisms 70, it abuts against the bearing plate 842, and then moves upward along the axial direction of the lead screw 820 to complete the reset.

[0040] In order to further improve the effect of shaking off the dust on the filter bag 50, the support plate 410 includes a fixed portion 411 and a movable portion 412, one end of the fixed portion 411 is connected to the partition plate 110, and the other end of the fixed portion 411 is connected to the movable portion 412 through a second elastic mechanism 430, and the second elastic mechanism 430 is used to make the movable portion 412 move toward or away from the fixed portion 411. Specifically, the second elastic mechanism 430 includes a plurality of second springs 431, one end of the second spring 431 is connected to the fixed portion 411 toward one end of the movable portion 412. The other end of the second spring 431 is connected to the side of the movable part 412 facing the fixed part 411. When the extrusion block 90 moves downward along the axial direction of the screw rod 820 and squeezes the bearing block 720, the movable part 412 simultaneously generates an axial downward force to stretch the second spring 431. After the extrusion block 90 passes through the bearing block 720, the second spring 431 rebounds and causes the movable part 412 to rebound in the direction toward the fixed part 411, that is, the movable part 412 vibrates, thereby causing the filter bag 50 to vibrate to a certain extent and shake off dust. When the extrusion block 90 moves upward along the axial direction and squeezes the bearing block 720, the movable part 412 generates an axial upward force to contract the second spring 431. After the extrusion block 90 passes through the bearing block 720, the second spring 431 rebounds and causes the movable part 412 to rebound in the direction away from the fixed part 411, that is, the movable part 412 vibrates again.

[0041] Furthermore, the second elastic mechanism 430 also includes a plug-in rod 432 and a plug-in column 433. The plug-in column 433 is arranged on a side of the fixed portion 411 facing the movable portion 412, and the plug-in rod 432 is arranged on a side of the movable portion 412 facing the fixed portion 411. The plug-in rod 432 is plugged into the plug-in column 433, that is, the plug-in column 433 is concave on a side facing the plug-in rod 432 to form a plug-in groove, and the plug-in rod 432 is plugged into the plug-in groove. It can be understood that the plug-in rod 432 is axially movably connected to the plug-in column 433. By arranging the plug-in rod 432 and the plug-in column 433, the moving direction of the movable portion 412 can be fixed, thereby avoiding the movable portion 412 from moving in other directions except axial movement only through the elastic connection mode of the second spring 431, thereby affecting the stability of the overall structure. Preferably, a supporting mechanism is provided in the plug-in slot, and the supporting mechanism is used to prevent the plug-in rod 432 from being separated from the plug-in slot.

[0042] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0043] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. A bag filter with an internally vibratable filter bag for shaking off dust, comprising a housing and a hopper. The bottom of the housing is connected to the hopper, and one end of the hopper facing away from the housing is connected to a dust treatment box. A partition plate is arranged inside the housing, and the partition plate divides the interior of the housing into a clean air part and a filtering part from top to bottom. An air inlet pipe and an air outlet pipe are arranged on the housing. The air inlet pipe is communicated with the filtering part, and the air outlet pipe is communicated with the clean air part. It is characterized in that, A plurality of through holes are formed in the partition plate at uniformly distributed intervals. A plurality of brackets are arranged on one side of the partition plate facing the filtering part. A filter bag is sleeved outside the brackets. The brackets include a plurality of support plates uniformly distributed at intervals around the outer edge of the through holes. A filter gas passage is formed by enclosing between the plurality of support plates. An expansion plate is arranged between the support plates and the filter bag. A first elastic mechanism is arranged in the filter gas passage. One end of the first elastic mechanism passes through the support plate and is connected to the expansion plate, so that the expansion plate moves from the support plate towards the axis line of the filter gas passage. A plurality of driving mechanisms are arranged at the top of the housing. The driving mechanisms correspond to the positions of the through holes. The driving mechanisms are drivingly connected to extrusion blocks, so that the extrusion blocks reciprocate along the axial direction of the filter gas passage. The extrusion blocks are used for extruding the first elastic mechanism, so that the first elastic mechanism moves from the axis line of the filter gas passage towards the support plate.

2. The bag filter with an internally vibratable filter bag as claimed in claim 1, wherein The first elastic mechanism includes a connecting rod, a bearing block and a first spring. One end of the connecting rod is connected to the expansion plate. The other end of the connecting rod passes through the support plate and is connected to the bearing block. The connecting rod extends from the expansion plate towards the axis line of the filter gas passage. The first spring is arranged between the support plate and the bearing block. The first spring is sleeved on the connecting rod.

3. The bag filter with an internally vibratable filter bag as claimed in claim 2, wherein, The extrusion block includes a smooth part and a lower arc part. The bottom of the smooth part is connected to the lower arc part. A first pushing groove is recessed on one side of the bearing block facing the partition plate. The first pushing groove is used for abutting against the outer side wall of the lower arc part.

4. The bag filter with an internally vibratable filter bag as claimed in claim 3, wherein, The extrusion block further includes an upper arc part. The upper arc part is arranged at the top of the smooth part. A second pushing groove is recessed on one side of the bearing block facing away from the partition plate. The second pushing groove is used for abutting against the outer side wall of the upper arc part.

5. The bag filter with an internally vibratable filter bag as claimed in claim 1, wherein The driving mechanism includes a driving motor, a lead screw and a guide rod. The driving motor is arranged at the top of the housing. The driving motor is electrically connected to the lead screw. One end of the lead screw facing away from the driving motor extends from the top of the housing towards the ash hopper direction, and the lead screw is located on the axis line of the through hole. One end of the guide rod is connected to the top of the housing. The other end of the guide rod extends from the top of the housing towards the ash hopper direction, and the guide rod is parallel to the lead screw. The extrusion block is sleeved on the lead screw and the guide rod.

6. The bag filter with an internally vibratable filter bag as claimed in claim 5, characterized in that, One end of the bracket facing away from the partition plate is connected to a limiting mechanism. The limiting mechanism is used for limiting the extrusion block to break away from the lead screw.

7. The bag filter with an internally vibratable filter bag for shaking off dust according to claim 6, characterized in that, The limiting mechanism includes a support rod and a bearing disc. One end of the support plate facing away from the partition plate is connected to the support rod. The support rod extends from the support plate towards the axis line of the filter gas passage and is connected to the bearing disc. The bearing disc is located on the axis line of the filter gas passage, and one ends of the lead screw and the guide rod facing the ash hopper are both abutted against the bearing disc.

8. The bag filter with an internally vibratable filter bag as claimed in claim 1, wherein, The support plate includes a fixed portion and a movable portion. One end of the fixed portion is connected to the partition plate, and the other end of the fixed portion is connected to the movable portion through a second elastic mechanism.

9. The bag filter with an internally vibratable filter bag as claimed in claim 8, wherein The second elastic mechanism includes a plurality of second springs. One end of each second spring is connected to the surface of the fixed portion facing the movable portion, and the other end of each second spring is connected to the surface of the movable portion facing the fixed portion.

10. The bag filter with an internally vibratable filter bag for shaking off dust according to claim 9, characterized in that, The second elastic mechanism further includes a plugging rod and a plugging column. The plugging column is disposed on the surface of the fixed portion facing the movable portion, and the plugging rod is disposed on the surface of the movable portion facing the fixed portion. The plugging rod is plugged into the plugging column.

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