A pulse dust collector

Abstract

The present invention discloses a pulse dust collector, comprising: two straight rings, which are arranged parallel to each other and arranged vertically, and are hollow structures; two notches, which are respectively arranged on the two straight rings. In the present invention, when the filter bag assembly is in the first state, one of the notches is open and the other notch is closed, so that the gas containing dust enters the interior of the straight ring through the open notch, and enters the interior of the rotating shaft after being filtered by the filter bag, and the purified gas is output, and the pulse valve is opened to use compressed air for pulse spraying, and reversely sprays from the connecting port to the filter bag in the closed notch to clean the filter bag. When the filter bag assembly is in the second state, the previously open notch is closed, and the previously closed notch is opened, and the filter bag assembly continuously transforms between the first state and the second state, and repeats in this way, so as to realize the cleaning of the filter bag while continuing to remove dust from the gas containing dust, and the gas dust removal process is not interrupted.

Description

Technical Field

[0001] The invention relates to the technical field of gas filters, and in particular to a pulse dust collector. Background Art

[0002] The pulse dust collector is a new type of high-efficiency pulse dust collector improved on the basis of the bag dust collector, which plays a role in filtering and purifying dust in the gas;

[0003] The pulse dust collector uses a centrifugal fan to suck dust-containing gas from the air inlet. The dust-containing gas passes through the filter bag with a metal skeleton inside, and the dust is captured on the outer surface of the filter bag, achieving gas filtration, separation and dust removal. As time goes by, more and more dust is accumulated on the filter bag, increasing the resistance passing through the filter bag, causing the processed air volume to gradually decrease. For normal operation, the resistance must be controlled within a certain range. If it exceeds the range, the filter bag must be cleaned. During cleaning, the pulse controller sequentially triggers the control valve and opens the pulse valve. The compressed air in the air bag is sprayed from the holes of the spray pipe through the venturi tube into the corresponding filter bags. The filter bag expands sharply instantly, causing the dust accumulated on the surface of the filter bag to fall off, and the filter bag returns to its initial state.

[0004] The cleaning process is to first stop the operation of the centrifugal fan, cut off the outlet air duct, so that the bag is in a state of no airflow, and then open the pulse valve to use compressed air for pulse spraying and cleaning. The closing time of the cut-off valve is sufficient to ensure that the dust peeled off from the filter bag after spraying is settled, avoiding the phenomenon that the dust is attached to the surface of the adjacent filter bag with the airflow after leaving the surface of the filter bag. However, there are the following defects:

[0005] During the dust cleaning stage, it is necessary to stop filtering and separating the dust-containing gas, which interrupts the gas dust removal process. It takes sufficient time for the dust peeled off the filter bag to settle, thereby extending the time of interrupting the gas dust removal process. Summary of the invention

[0006] The purpose of the present invention is to provide a pulse dust collector which can clean the filter bag while continuing to perform dust removal treatment on the dust-containing gas without interrupting the gas dust removal treatment.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A dust removal filter bag assembly, comprising:

[0009] Two straight rings are arranged parallel to each other and vertically, and are hollow structures;

[0010] Two notches are respectively arranged on two straight rings;

[0011] Two rotating shafts are respectively located inside the two straight rings and are coaxially arranged with the straight rings, and are hollow structures;

[0012] Two communication ports are respectively arranged on two rotating shafts;

[0013] Two filter bags are located inside two straight rings respectively, and the boundary line is located between the connecting port and the inside of the straight ring, so that the gas inside the straight ring needs to pass through the filter bag to enter the connecting port;

[0014] Among them, when the filter bag assembly is in the first state, one of the gaps is open and the other gap is closed, and the gas containing dust enters the straight ring through the open gap, and enters the rotating shaft after being filtered by the filter bag, outputs the purified gas, opens the pulse valve and uses compressed air for pulse spraying, and reversely sprays from the connecting port to the filter bag in the closed gap to clean the filter bag. When the filter bag assembly is in the second state, the originally open gap is closed, and the originally closed gap is opened. The filter bag assembly continuously transforms between the first state and the second state, and repeats this cycle.

[0015] Preferably, the dust filter bag assembly also includes a bracket, two straight rings passing through the bracket and fixedly connected to the bracket, the two straight rings are the first straight ring and the second straight ring, the two notches are the first notch and the second notch, and a 120° fan shape is formed between the virtual lines extending from the two ends of the notch to the center, the two rotating shafts are the first rotating shaft and the second rotating shaft, the two connecting ports are the first connecting port and the second connecting port, and the two filter bags are the first filter bag and the second filter bag, both having a first fan-shaped area and two second fan-shaped areas.

[0016] Preferably, the top ends of the first rotating shaft and the second rotating shaft are fixedly connected to the funnel-shaped connector, and the bottom ends are closed ends.

[0017] Preferably, two first connecting plates are arranged in the first straight ring, namely connecting plate a and connecting plate b, both of which are located inside the first straight ring, and one side of connecting plate a is fixedly connected to the inner wall of the first straight ring, and the other side is sealed and slidably arranged with the outer wall of the first rotating shaft, one side of connecting plate b is fixedly connected to the outer wall of the first rotating shaft, and the other side is sealed and slidably arranged with the inner wall of the first straight ring, and two second connecting plates are arranged in the second straight ring, namely connecting plate c and connecting plate d, both of which are located inside the second straight ring, and one side of connecting plate c is fixedly connected to the inner wall of the second straight ring, and the other side is sealed and slidably arranged with the outer wall of the second rotating shaft, and one side of connecting plate d is fixedly connected to the outer wall of the second rotating shaft, and the other side is sealed and slidably arranged with the inner wall of the second straight ring.

[0018] Preferably, the first filter bag is arranged between the two first connecting plates, the second filter bag is arranged between the two second connecting plates, the outer walls of the first rotating shaft and the second rotating shaft are fixedly sleeved on the chassis, and the chassis has a fan-shaped groove with a 120° fan-shaped shape.

[0019] Preferably, the first straight ring is rotatably connected to the first rotating ring, and the second straight ring is rotatably connected to the second rotating ring. The first rotating ring and the second rotating ring are both fixedly connected to the limiting ring. The first straight ring and the second straight ring are both provided with annular grooves, and the limiting rings are located inside the annular grooves. The first rotating ring and the second rotating ring are both fixedly connected to the bottom of the first rotating shaft and the second rotating shaft through connecting rods. The outer walls of the first rotating ring and the second rotating ring are both fixedly sleeved with ring teeth. The bracket has a limiting groove, and the limiting groove is in an inverted "T" shape. A limiting block is slidably connected in the limiting groove, and the limiting block is in an inverted "T" shape. The limiting block is fixedly connected to the rack, and the rack is meshed with the two ring teeth.

[0020] A pulse dust collector, comprising:

[0021] Box;

[0022] A plurality of filter bag assemblies are arranged inside the box, wherein the bracket is fixedly connected to the inside of the box, dividing the inside of the box into two spaces, an upper space and a lower space;

[0023] The air inlet and the air outlet are arranged on the box body and are connected with the lower space and the upper space respectively;

[0024] The centrifugal fan is installed in the upper space inside the box, and its output end is connected to the air outlet, and the output end is connected to the internal space of the rotating shaft;

[0025] The compressed air pulse valve is installed in the upper space of the box;

[0026] The tray is arranged in the lower space of the box body and is located below the filter bag assembly;

[0027] The electric hydraulic cylinder is installed in the lower and inner spaces of the box body and is fixedly connected to the racks in the multiple filter bag assemblies to control the translation position of the racks.

[0028] A method for cleaning dust from a dust filter bag assembly and continuously purifying gas comprises the following steps:

[0029] When the rack is translated to the first position, the first rotating ring and the second rotating ring both rotate 120° in the positive direction;

[0030] After the rotation, the first gap opens and the second gap closes. The gas containing dust passes through the first filter bag through the first gap, causing the dust to accumulate on the outer surface of the first filter bag, and then enters the first connecting port to purify the gas. At the same time, the compressed air pulse valve opens and sprays, so that the compressed air sprays the second filter bag in the opposite direction through the second connecting port, so that the dust is separated from the outer surface of the second filter bag, and the second filter bag returns to its initial state.

[0031] When the rack is translated to the second position, the first rotating ring and the second rotating ring are both rotated 120° in the opposite direction;

[0032] After the rotation, the first gap is closed and the second gap is opened. The gas containing dust passes through the second filter bag through the first gap, causing the dust to accumulate on the outer surface of the second filter bag, and then enters the second connecting port to purify the gas. At the same time, the compressed air pulse valve is opened and sprayed, so that the compressed air is sprayed back to the first filter bag through the second connecting port, so that the dust is separated from the outer surface of the first filter bag, and the first filter bag returns to its initial state.

[0033] This cycle repeats itself, with the first filter bag and the second filter bag always in a state where one filters gas while the other cleans dust.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] In the present invention, when the filter bag assembly is in the first state, one of the gaps is open and the other gap is closed, so the gas containing dust enters the straight ring through the open gap, and enters the rotating shaft after being filtered by the filter bag, and the purified gas is output. The pulse valve is opened to perform pulse blowing with compressed air, and the air is blown from the connecting port in the reverse direction to the filter bag in the closed gap to clean the filter bag. When the filter bag assembly is in the second state, the previously open gap is closed, and the previously closed gap is opened. The filter bag assembly continuously transforms between the first state and the second state, and repeats this cycle to achieve cleaning of the filter bag while continuing to remove dust from the dust-containing gas, without interrupting the gas dust removal process. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the structure of a dust filter bag assembly proposed by the present invention;

[0037] Figure 2 A schematic structural diagram of a dust filter bag assembly proposed by the present invention from another perspective;

[0038] Figure 3 It is a schematic diagram of the structure of any straight ring in a dust filter bag assembly proposed by the present invention;

[0039] Figure 4 for Figure 3 Schematic diagram of structural decomposition;

[0040] Figure 5 for Figure 4 Schematic diagram of structural decomposition;

[0041] Figure 6 A schematic diagram of the structure of a connecting plate a or a connecting plate c, a connecting plate b or a connecting plate d in a dust filter bag assembly proposed by the present invention;

[0042] Figure 7 A schematic diagram of a structure in which a first straight ring and a second straight ring of a dust filter bag assembly proposed by the present invention are in the same state;

[0043] Figure 8 A schematic diagram of the structure of a pulse dust collector proposed by the present invention;

[0044] Fig. 9 The present invention provides a schematic structural diagram of a one-way component in a dust filter bag assembly.

[0045] In the figure: 1, bracket; 2, first straight ring; 3, second straight ring; 4, first notch; 5, second notch; 6, first rotating shaft; 7, second rotating shaft; 8, first connecting port; 9, second connecting port; 10, first filter bag; 11, second filter bag; 12, connector; 13, a connecting plate; 14, b connecting plate; 15, c connecting plate; 16, d connecting plate; 17, chassis; 18, fan-shaped groove; 19, first rotating ring; 20, the Two rotating rings; 21. Limiting rings; 22. Ring grooves; 23. Ring teeth; 24. Limiting grooves; 25. Limiting blocks; 26. Racks; 27. Boxes; 28. Air inlets; 29. ​​Air outlets; 30. Centrifugal fans; 31. Compressed air pulse valves; 32. Trays; 33. Electric hydraulic cylinders; 34. Connecting rods; 35. Guide blocks; 36. First plates; 37. Second plates; 38. Vertical shafts; 39. Tension springs; 40. Gear plates. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0047] Reference Figure 1 -Attached Figure 7 , a dust filter bag assembly, comprising:

[0048] Two straight rings are arranged parallel to each other and vertically, and are hollow structures;

[0049] Two notches are respectively arranged on two straight rings;

[0050] Two rotating shafts are respectively located inside the two straight rings and are coaxially arranged with the straight rings, and are hollow structures;

[0051] Two communication ports are respectively arranged on two rotating shafts;

[0052] Two filter bags are located inside two straight rings respectively, and the boundary line is located between the connecting port and the inside of the straight ring, so that the gas inside the straight ring needs to pass through the filter bag to enter the connecting port;

[0053] Among them, when the filter bag assembly is in the first state, one of the gaps is open and the other gap is closed, and the gas containing dust enters the straight ring through the open gap, and enters the rotating shaft after being filtered by the filter bag, outputs the purified gas, opens the pulse valve and uses compressed air for pulse spraying, and reversely sprays from the connecting port to the filter bag in the closed gap to clean the filter bag. When the filter bag assembly is in the second state, the originally open gap is closed, and the originally closed gap is opened. The filter bag assembly continuously transforms between the first state and the second state, and repeats this cycle.

[0054] The dust filter bag assembly also includes a bracket 1, two straight rings passing through the bracket 1 and fixedly connected to the bracket 1, the two straight rings are a first straight ring 2 and a second straight ring 3, the two notches are a first notch 4 and a second notch 5, and a 120° fan-shaped shape is formed between virtual lines extending from both ends of the notch to the center, the two rotating shafts are a first rotating shaft 6 and a second rotating shaft 7, the two connecting ports are a first connecting port 8 and a second connecting port 9, and the two filter bags are a first filter bag 10 and a second filter bag 11, both of which have a first fan-shaped area and two second fan-shaped areas;

[0055] The top ends of the first rotating shaft 6 and the second rotating shaft 7 are fixedly connected to the funnel-shaped connector 12, and the bottom ends are closed ends;

[0056] Two first connecting plates are arranged in the first straight ring 2, namely, connecting plate a 13 and connecting plate b 14, both of which are located inside the first straight ring 2, and one side of connecting plate a 13 is fixedly connected to the inner wall of the first straight ring 2, and the other side is sealed and slidably arranged with the outer wall of the first rotating shaft 6, one side of connecting plate b 14 is fixedly connected to the outer wall of the first rotating shaft 6, and the other side is sealed and slidably arranged with the inner wall of the first straight ring 2, two second connecting plates are arranged in the second straight ring 3, namely, connecting plate c 15 and connecting plate d 16, both of which are located inside the second straight ring 3, and one side of connecting plate c 15 is fixedly connected to the inner wall of the second straight ring 3, and the other side is sealed and slidably arranged with the outer wall of the second rotating shaft 7, one side of connecting plate d 16 is fixedly connected to the outer wall of the second rotating shaft 7, and the other side is sealed and slidably arranged with the inner wall of the second straight ring 3, the first filter bag 10 is arranged between the two first connecting plates, the second filter bag 11 is arranged between the two second connecting plates, the outer walls of the first rotating shaft 6 and the second rotating shaft 7 are fixedly sleeved with a chassis 17, and the chassis 17 has a 120° fan-shaped fan-shaped fan-shaped groove 18;

[0057] The first straight ring 2 is rotatably connected to the first rotating ring 19, and the second straight ring 3 is rotatably connected to the second rotating ring 20. The first rotating ring 19 and the second rotating ring 20 are both fixedly connected to the limiting ring 21. The first straight ring 2 and the second straight ring 3 are both provided with an annular groove 22. The limiting ring 21 is located inside the annular groove 22. The first rotating ring 19 and the second rotating ring 20 are both fixedly connected to the bottom of the first rotating shaft 6 and the second rotating shaft 7 through a connecting rod 34. The outer walls of the first rotating ring 19 and the second rotating ring 20 are both fixedly sleeved with ring teeth 23. The bracket 1 is provided with a limiting groove 24. The limiting groove 24 is in an inverted "T" shape. A limiting block 25 is slidably connected in the limiting groove 24. The limiting block 25 is in an inverted "T" shape. The limiting block 25 is fixedly connected to the rack 26. The rack 26 is meshed with the two ring teeth 23.

[0058] When the rack 26 is translated to the first position, the first notch 4 is opened, the first filter bag 10 is contracted, and the dust-containing gas passes through the first notch 4 and is filtered by the first filter bag 10, and the purified gas enters the first connecting port 8, then the second notch 5 is closed, the second filter bag 11 is expanded, and the pulse valve is opened to spray compressed air from the second connecting port 9 to spray and clean the expanded second filter bag 11, which is the first state of the filter bag assembly;

[0059] When the rack 26 translates to the second position, the second gap 5 opens, the second filter bag 11 contracts, and the dust-containing gas passes through the second gap 5 and is filtered by the second filter bag 11. The purified gas enters the second connecting port 9, and the first gap 4 closes, the first filter bag 10 expands, and the pulse valve is opened to spray compressed air from the first connecting port 8 to clean the expanded first filter bag 10. This is the second state of the filter bag assembly.

[0060] Reference Figure 8 , a pulse dust collector, comprising:

[0061] Box 27;

[0062] A plurality of filter bag assemblies are arranged inside the box 27, wherein the bracket 1 is fixedly connected to the inside of the box 27, dividing the inside of the box 27 into two spaces, an upper space and a lower space;

[0063] The air inlet 28 and the air outlet 29 are provided on the box body 27 and are connected to the lower space and the upper space respectively;

[0064] The centrifugal fan 30 is installed in the upper space inside the box 27, and its output end is connected to the air outlet 29, and its output end is connected to the internal space of the rotating shaft;

[0065] A compressed air pulse valve 31 is installed in the upper space of the box 27;

[0066] The tray 32 is disposed in the lower space of the box body 27 and is located below the filter bag assembly;

[0067] The electric hydraulic cylinder 33 is installed in the lower space of the box body 27 and is fixedly connected to the racks 26 in the plurality of filter bag assemblies to control the translation position of the racks 26 .

[0068] Working principle:

[0069] When the rack 26 is translated to the first position, the first rotating ring 19 and the second rotating ring 20 both rotate 120° in the positive direction;

[0070] After the rotation, the first gap 4 is opened and the second gap 5 is closed. The gas containing dust passes through the first filter bag 10 through the first gap 4, so that the dust is deposited on the outer surface of the first filter bag 10, and then enters the first connecting port 8 to purify the gas. At the same time, the compressed air pulse valve 31 is opened and sprayed, so that the compressed air is sprayed back to the second filter bag 11 through the second connecting port 9, so that the dust is separated from the outer surface of the second filter bag 11, and the second filter bag 11 returns to its initial state.

[0071] When the rack 26 is translated to the second position, the first rotating ring 19 and the second rotating ring 20 are both rotated 120° in the opposite direction;

[0072] After the rotation, the first gap 4 is closed and the second gap 5 is opened. The gas containing dust passes through the second filter bag 11 through the first gap 4, so that the dust is deposited on the outer surface of the second filter bag 11, and then enters the second connecting port 9 to purify the gas. At the same time, the compressed air pulse valve 31 is opened and sprayed, so that the compressed air is sprayed back to the first filter bag 10 through the second connecting port 9, so that the dust is separated from the outer surface of the first filter bag 10, and the first filter bag 10 returns to its initial state.

[0073] This cycle repeats itself, with the first filter bag 10 and the second filter bag 11 always being in a state where one filters gas while the other cleans dust.

[0074] It should be noted that:

[0075] The two connecting plates in the straight ring are arranged at an angle of 120°;

[0076] Reference Figure 7 , wherein the first filter bag 10 is in a contracted state, and the second filter bag 11 is in an expanded state, i.e., the maximum volume of the filter bag, the first filter bag 10 is contracted, and the gas containing dust passes through it. At this moment, the bottom plate 17 below the first filter bag 10 blocks the bottom of the first filter bag 10, and the second filter bag 11 is expanded, then the second rotating ring 20 outside the second straight ring 3 surrounds the second notch 5, so that the gas containing dust cannot contact the second filter bag 11. At this moment, compressed air is sprayed, so that the dust is separated from the second filter bag 11, and falls to the bottom of the second straight ring 3 through the fan-shaped groove 18, and finally falls on the tray 32;

[0077] In order to prevent the dust-containing gas from flowing upward from the bottom of the straight ring, a one-way component is set at the bottom of the straight ring, specifically:

[0078] Reference Fig. 9 A guide block 35 is fixedly connected inside the straight ring. The guide block 35 has a rectangular part. A first plate 36 is fixedly connected inside the rectangular part and a second plate 37 is slidably connected thereto. The area of ​​the first plate 36 is smaller than that of the rectangular part. The second plate 37 is fixedly connected to two vertical shafts 38. The two vertical shafts 38 extend upward through the first plate 36 and are fixedly connected to a stop plate 40 at the extended end. A tension spring 39 is sleeved on the outer wall of the vertical shaft 38. The two ends of the tension spring 39 are respectively connected to the first plate 36 and the second plate 37. The elastic force of the tension spring 39 makes the second plate 37 located in the rectangular part of the guide block 35 and plays a blocking role. Under the instantaneous blowing of compressed air, the elastic force of the tension spring 39 is overcome, so that the second plate 37 moves downward and separates from the rectangular part, so that the dust separated from the filter bag falls and finally reaches the tray 32.

[0079] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dust filter bag assembly, characterized in that: include: Two straight rings are arranged parallel to each other and vertically, and are hollow structures; Two notches are respectively arranged on two straight rings; Two rotating shafts are respectively located inside the two straight rings and are coaxially arranged with the straight rings, and are hollow structures; Two communication ports are respectively arranged on two rotating shafts; Two filter bags are located inside two straight rings respectively, and the boundary line is located between the connecting port and the inside of the straight ring, so that the gas inside the straight ring needs to pass through the filter bag to enter the connecting port; Among them, when the filter bag assembly is in the first state, one of the gaps is open and the other gap is closed, and the gas containing dust enters the straight ring through the open gap, and enters the rotating shaft after being filtered by the filter bag, outputs the purified gas, opens the pulse valve and uses compressed air for pulse spraying, and reversely sprays from the connecting port to the filter bag in the closed gap to clean the filter bag. When the filter bag assembly is in the second state, the originally open gap is closed, and the originally closed gap is opened. The filter bag assembly continuously transforms between the first state and the second state, and repeats this cycle.

2. A dust filter bag assembly according to claim 1, characterized in that: The dust filter bag assembly also includes a bracket (1), two straight rings passing through the bracket (1) and fixedly connected to the bracket (1), the two straight rings are a first straight ring (2) and a second straight ring (3), the two notches are a first notch (4) and a second notch (5), a 120° fan-shaped shape is formed between virtual lines extending from both ends of the notch toward the center, the two rotating shafts are a first rotating shaft (6) and a second rotating shaft (7), the two connecting ports are a first connecting port (8) and a second connecting port (9), and the two filter bags are a first filter bag (10) and a second filter bag (11), each having a first fan-shaped area and two second fan-shaped areas.

3. A dust filter bag assembly according to claim 2, characterized in that: The top ends of the first rotating shaft (6) and the second rotating shaft (7) are both fixedly connected to a funnel-shaped connector (12), and the bottom ends are both closed ends.

4. A dust filter bag assembly according to claim 2, characterized in that: Two first connecting plates are arranged in the first straight ring (2), namely connecting plate a (13) and connecting plate b (14), both of which are located in the first straight ring (2), and one side of connecting plate a (13) is fixedly connected to the inner wall of the first straight ring (2), and the other side is sealingly slidably arranged with the outer wall of the first rotating shaft (6); one side of connecting plate b (14) is fixedly connected to the outer wall of the first rotating shaft (6), and the other side is sealingly slidably arranged with the inner wall of the first straight ring (2); two second connecting plates are arranged in the second straight ring (3), namely connecting plate c (15) and connecting plate d (16), both of which are located in the second straight ring (3), and one side of connecting plate c (15) is fixedly connected to the inner wall of the second straight ring (3), and the other side is sealingly slidably arranged with the outer wall of the second rotating shaft (7); one side of connecting plate d (16) is fixedly connected to the outer wall of the second rotating shaft (7), and the other side is sealingly slidably arranged with the inner wall of the second straight ring (3).

5. The dust filter bag assembly according to claim 2, characterized in that: The first filter bag (10) is arranged between the two first connecting plates, the second filter bag (11) is arranged between the two second connecting plates, the outer walls of the first rotating shaft (6) and the second rotating shaft (7) are both fixedly sleeved on the chassis (17), and the chassis (17) has a fan-shaped groove (18) with a fan shape of 120 degrees.

6. A dust filter bag assembly according to claim 2, characterized in that: The first straight ring (2) is rotatably connected to the first rotating ring (19), and the second straight ring (3) is rotatably connected to the second rotating ring (20). The first rotating ring (19) and the second rotating ring (20) are both fixedly connected to a limiting ring (21). The first straight ring (2) and the second straight ring (3) are both provided with an annular groove (22). The limiting ring (21) is located inside the annular groove (22). The first rotating ring (19) and the second rotating ring (20) are both fixedly connected to the bottom of the first rotating shaft (6) and the second rotating shaft (7) through a connecting rod (31). The outer walls of the first rotating ring (19) and the second rotating ring (20) are both fixedly sleeved with annular teeth (23). The bracket (1) is provided with a limiting groove (24). The limiting groove (24) is in an inverted "T" shape. A limiting block (25) is slidably connected in the limiting groove (24). The limiting block (25) is in an inverted "T" shape. The limiting block (25) is fixedly connected to a rack (26). The rack (26) is meshedly connected to the two ring teeth (23).

7. A pulse dust collector, characterized in that: The dust filter bag assembly according to claim 6 further comprises: Box (27); A plurality of filter bag assemblies are arranged inside the box body (27), wherein the bracket (1) is fixedly connected to the inside of the box body (27), dividing the inside of the box body (27) into two spaces, an upper space and a lower space; An air inlet (28) and an air outlet (29) are provided on the box body (27) and are respectively connected to the lower space and the upper space; A centrifugal fan (30) is installed in the upper space inside the box (27), and its output end is connected to the air outlet (29), and the output end is connected to the internal space of the rotating shaft; A compressed air pulse valve (31) is installed in the upper space of the box (27); A tray (32) is disposed in the lower space of the box body (27) and is located below the filter bag assembly; The electric hydraulic cylinder (33) is installed in the lower space of the box body (27) and is fixedly connected to the racks (26) in the plurality of filter bag assemblies, so as to control the translation position of the racks (26).

8. A method for cleaning dust filter bag components and continuously purifying gas according to claim 6, characterized in that: The following steps are involved: When the rack (26) is translated to the first position, the first rotating ring (19) and the second rotating ring (20) are both rotated 120° in the positive direction; After the rotation, the first gap (4) opens and the second gap (5) closes, and the gas containing dust passes through the first gap (4) through the first filter bag (10), causing the dust to accumulate on the outer surface of the first filter bag (10), and then enters the first connecting port (8) to purify the gas. At the same time, the compressed air pulse valve (31) opens and blows, so that the compressed air blows the second filter bag (11) in the opposite direction through the second connecting port (9), so that the dust is separated from the outer surface of the second filter bag (11), and the second filter bag (11) returns to its initial state. When the rack (26) is translated to the second position, the first rotating ring (19) and the second rotating ring (20) are both rotated in the opposite direction by 120°; After the rotation, the first gap (4) is closed and the second gap (5) is opened. The gas containing dust passes through the first gap (4) through the second filter bag (11), causing the dust to be deposited on the outer surface of the second filter bag (11), and then enters the second connecting port (9) to achieve gas purification. At the same time, the compressed air pulse valve (31) is opened and sprayed, so that the compressed air is sprayed in the opposite direction to the first filter bag (10) through the second connecting port (9), so that the dust is separated from the outer surface of the first filter bag (10), and the first filter bag (10) returns to its initial state. This cycle repeats itself, with the first filter bag (10) and the second filter bag (11) always being in a state where one is filtering gas while the other is cleaning dust.

Images