A self-regulating pulse dust collector

Abstract

The present invention relates to the technical field of separation devices, and specifically to a self-regulating pulse dust collector, which includes a frame, a filter assembly, a spray assembly, and an air pump; wherein the filter assembly includes an outer cylinder and a filter bag; a single or multiple filter bags are cleaned by the spray assembly, and the multiple filter bags are separated by the outer cylinder, thereby solving the problem of cross-contamination caused by dust spraying to adjacent filter bags during the cleaning process in the bag-type dust collector in the prior art. By providing a tension spring, a limit assembly, and a trigger assembly, the filter bag is folded when it is damaged, and the damaged part is blocked, thereby preventing the gas from leaving the shell without being filtered, and facilitating the identification of the damaged filter bag, thereby improving maintenance efficiency. By providing fan blades, dust in the air is separated from the air under the action of centrifugal force, further improving dust removal efficiency and shortening the cleaning cycle; the fan blades are rotated around their own axis by the rotating assembly, avoiding blocking dust during cleaning, and blocking dust-laden gas from entering the filter chamber when the filter bag is damaged.

Description

Technical Field

[0001] The invention relates to the technical field of separation devices, in particular to a self-regulating pulse dust collector. Background Art

[0002] A pulse dust collector is a new, high-efficiency dust removal device based on a bag filter. It operates by utilizing the filtering effect of fabric to filter dust-laden air. When dust-laden air enters the bag filter, large, high-density dust particles settle due to gravity and fall into the hopper. Finer dust particles are trapped as they pass through the filter bags, resulting in purification. Clean air is then discharged through the bags. To clean the bags, a spray assembly is used to inject high- or low-pressure air into the bags.

[0003] However, when cleaning the bag dust collector in the prior art, there is a problem that the filter bags are too long, resulting in the air pressure reaching the bottom of the bags being too low during pulse cleaning, and the filter bags cannot be effectively cleaned. For this reason, the Chinese patent document with publication number CN119056157A discloses a bag-type pulse dust collector, which solves the problem of incomplete cleaning. However, during the cleaning process, the bag dust collector in the above patent and the prior art is prone to spraying dust onto adjacent cloth bags, resulting in poor cleaning effect and low cleaning efficiency. Moreover, when one of the multiple filter bags is damaged, it needs to be replaced, but it is difficult to distinguish the damaged filter bags from the multiple filter bags, and the maintenance efficiency is low, which in turn affects the dust removal efficiency. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention proposes a self-adjusting pulse dust collector, which solves the problem in the existing technology that the dust collector sprays dust into adjacent bags during the cleaning process, and the problem that it is difficult to distinguish damaged filter bags from multiple filter bags.

[0005] A self-regulating pulse dust collector of the present invention adopts the following technical solution, including a frame, a filter assembly, a blowing assembly and an air pump;

[0006] The frame is fixedly connected to a shell, and an ash hopper is provided at the lower end of the shell; a flower plate is fixedly connected to the middle of the shell, the flower plate is arranged horizontally, and a plurality of air holes are opened on the flower plate, an air inlet is opened on the lower side wall of the shell, and an air outlet is opened on the upper end of the shell above the flower plate;

[0007] The number of filter assemblies is consistent with the number of air vents; multiple filter assemblies are arranged in a rectangular array in the shell; the filter assembly includes an outer cylinder, a filter bag and a baffle; the outer cylinder extends vertically, and the upper end of the outer cylinder is fixedly connected to the flower plate; each air vent is fixedly connected to a fixing ring; the filter bag is cylindrical and extends vertically, the upper end of the filter bag is fixedly connected to the fixing ring and is communicated with the air vent, and a filter cavity is defined between the outer cylinder and the filter bag; the baffle is connected to the filter bag for sealing the opening at the lower end of the filter bag; a tension spring is connected between the flower plate and the baffle, and a limit assembly and a trigger assembly are provided between the baffle and the outer cylinder, the limit assembly is used to keep the distance between the baffle and the flower plate at a preset value, and the trigger assembly is used to release the limit assembly when the air flow rate flowing through the periphery of the baffle is greater than the preset value;

[0008] The limiting assembly includes a limiting ring and a plurality of limiting protrusions; the plurality of limiting protrusions are fixedly connected to the lower portion of the inner wall of the outer cylinder, and the limiting protrusions extend radially inwardly along the outer cylinder; the limiting ring is rotatably connected to the baffle around its own axis, the limiting ring is horizontally arranged, and a plurality of through holes are opened on the outer periphery of the limiting ring, and the through holes are consistent with the shape, size and number of the limiting protrusions. In the initial state, a preset angle is formed between the through holes and the limiting protrusions. The trigger assembly is used to rotate the limiting ring around its own axis when the air flow rate flowing through the outer periphery of the baffle is greater than a preset value;

[0009] The trigger assembly includes a rotating ring and a plurality of fan blades. The rotating ring is rotatably mounted on the lower portion of the baffle. The plurality of fan blades are evenly distributed along the circumference of the rotating ring, and a preset angle exists between the fan blades and the horizontal plane. A limiting ring is fixedly connected to the lower end of the rotating ring, and a friction transmission is performed at the position where the limiting ring contacts the outer cylinder. A plurality of mounting holes are opened on the peripheral wall of the rotating ring, and a fan blade is rotatably mounted in each mounting hole. A rotating assembly is arranged in the outer cylinder. The rotating assembly is used to drive the fan blades to rotate around their own axes when the baffle moves axially relative to the outer cylinder until the fan blades are in a position to block the gap between the outer cylinder and the baffle.

[0010] The spray assembly is used to spray compressed air into a single or multiple filter bags;

[0011] The air pump is used to allow the gas to enter the shell from the air inlet, pass through the filter cavity, pass through the filter bag, and be discharged from the shell from the air outlet.

[0012] Optionally, the rotating assembly includes a resistance column, a resistance disk and multiple friction plates; the resistance column extends vertically and is installed in the rotating ring for up and down movement, the multiple friction plates are arranged vertically, extend along the radial direction of the resistance column, and are evenly distributed on the outer periphery of the upper end of the resistance column along the circumference of the resistance column, the number of friction plates is consistent with the number of fan blades, the friction plate is arranged between the rotating shafts of two adjacent fan blades, and each friction plate is frictionally transmitted with a fan blade; the resistance disk is rotatably connected to the resistance column, and the resistance disk moves up and down relative to the outer cylinder; the connection position between the resistance disk and the resistance column is frictionally transmitted, and the outer periphery of the resistance disk is frictionally transmitted with the inner wall of the outer cylinder.

[0013] Optionally, a synchronization ring is coaxially arranged above the resistance column.

[0014] Optionally, multiple blowing assemblies are provided, and the multiple blowing assemblies are evenly distributed along the front-to-back direction. The blowing assemblies include a pipe and multiple nozzles. The pipe extends along the left-right direction, and the multiple nozzles are evenly distributed along the axial direction of the pipe, and each nozzle corresponds to a filter bag; an air compressor is provided on the shell, and the multiple pipes are connected to the air compression device, and each nozzle is connected to an air valve.

[0015] Optionally, an inspection platform is provided on the periphery of the shell; an inspection staircase is fixedly installed on the frame, and the upper end of the inspection staircase leads to the inspection platform.

[0016] Optionally, the inspection stairs are provided with a protective net.

[0017] The beneficial effects of the present invention are as follows: a self-regulating pulse dust collector of the present invention cleans a single or multiple filter bags through a spraying assembly, and an outer cylinder is provided outside the filter bag to separate the multiple filter bags, thereby solving the problem in the prior art that the bag-type dust collector sprays dust onto adjacent filter bags during the cleaning process, causing cross contamination and affecting the cleaning effect and efficiency.

[0018] Furthermore, by arranging a tension spring, a limit assembly and a trigger assembly, the filter bag is folded when it is damaged, thereby sealing the damaged part of the filter bag, thereby preventing dust-laden gas from passing through the damaged part of the filter bag and being discharged from the shell from the air outlet, thereby ensuring the dust removal effect. When the dust collector is inspected and repaired, the intact filter bag is in an extended state, and the damaged filter bag is in a folded state. The damaged filter bag can be easily distinguished from multiple intact filter bags, thereby improving maintenance efficiency and avoiding the dust removal efficiency being affected by excessive maintenance and replacement time.

[0019] Furthermore, by providing fan blades, dust-laden air is guided by the blades when it comes into contact with them. After entering the filter chamber, the dust-laden air flows upward while rotating around the axis of the rotating ring. Dust in the air is flung toward the inner wall of the outer cylinder under the action of centrifugal force, and then falls into the ash hopper under the action of gravity. This further improves dust removal efficiency and shortens the cleaning cycle.

[0020] Furthermore, by providing a rotating assembly, the fan blades rotate around their own axis, tending to be vertical during the dust removal process, thereby preventing dust from being blocked by the fan blades as it falls into the ash hopper, ensuring the dust removal effect. If the filter bag is damaged, the fan blades rotate to a horizontal state, blocking the gap between the outer cylinder and the baffle, thereby preventing dust-laden gas from entering the filter chamber, further ensuring dust removal effect even when the filter bag is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the overall structure of a self-regulating pulse dust collector of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure inside the shell of a self-regulating pulse dust collector of the present invention;

[0024] Figure 3 A side view of a self-regulating pulse dust collector according to the present invention;

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

[0026] Figure 5 When the filter bag in the self-regulating pulse dust collector of the present invention is damaged Figure 3 Middle AA section view;

[0027] Figure 6 for Figure 4 Enlarged image at the center X.

[0028] In the picture:

[0029] 100, frame; 110, housing; 111, panel; 112, fixing ring; 113, air inlet; 114, air outlet; 120, ash hopper; 130, maintenance platform; 140, maintenance stairs; 141, protective net;

[0030] 200, filter assembly; 210, outer cylinder; 220, filter bag; 230, baffle; 240, tension spring;

[0031] 300, spray assembly; 310, pipeline; 320, nozzle; 330, air compressor;

[0032] 400, limiting assembly; 410, limiting ring; 420, limiting protrusion;

[0033] 500, trigger assembly; 510, rotating ring; 520, fan blade;

[0034] 600, rotating assembly; 610, resistance column; 620, resistance plate; 630, friction plate; 640, synchronization ring. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] like Figures 1 to 6 As shown, a self-regulating pulse dust collector provided by an embodiment of the present invention includes a frame 100, a filter assembly 200, a spray assembly 300 and an air pump;

[0037] A housing 110 is fixedly connected to the frame 100, with an ash hopper 120 located at its lower end. A horizontal panel 111 is fixedly connected to the middle of the housing 110. The panel 111 is provided with multiple air holes. An air inlet 113 is provided on the lower sidewall of the housing 110, and an air outlet 114 is provided at the upper end of the housing 110 above the panel 111. An inspection platform 130 is provided on the periphery of the housing 110. An inspection staircase 140 is fixedly mounted on the frame 100, with its upper end leading to the inspection platform 130. The inspection staircase 140 is provided with a protective net 141.

[0038] The number of filter assemblies 200 is consistent with the number of air vents; multiple filter assemblies 200 are arranged in a rectangular array within the housing 110; the filter assembly 200 includes an outer cylinder 210, a filter bag 220, and a baffle 230; the outer cylinder 210 extends vertically, and the upper end of the outer cylinder 210 is fixedly connected to the flower plate 111; each air vent is fixedly connected to a fixing ring 112; the filter bag 220 is cylindrical and extends vertically, and the upper end of the filter bag 220 is fixedly connected to the fixing ring 112 and communicates with the air vent, defining a filter cavity between the outer cylinder 210 and the filter bag 220; the baffle 230 is connected to the filter bag 220 and is used to block the opening at the lower end of the filter bag 220;

[0039] The spray assembly 300 is used to spray compressed air into a single or multiple filter bags 220; there are multiple spray assemblies 300, and the multiple spray assemblies 300 are evenly distributed along the front and back. The spray assembly 300 includes a pipe 310 and multiple nozzles 320, the pipe 310 extends in the left and right directions, and the multiple nozzles 320 are evenly distributed along the axial direction of the pipe 310, and each nozzle 320 corresponds to a filter bag 220; an air compressor 330 is provided on the shell 110, and the multiple pipes 310 are all connected to the air compression device, and each nozzle 320 is connected to an air valve.

[0040] The air pump is used to allow the gas to enter the housing 110 from the air inlet 113 , pass through the filter cavity, pass through the filter bag 220 , and be discharged from the housing 110 from the air outlet 114 .

[0041] When dust removal is required, turn on the air pump, and the air pump allows the dust-laden gas to enter the shell 110 from the air inlet 113. After the gas enters the shell 110, it enters the filter chamber from the lower end of the outer cylinder 210. The large particles of dust settle under the action of gravity and fall into the ash hopper 120. The air carries the fine dust to move toward the filter bag 220. The dust is blocked by the filter bag 220 and stays on the outer surface of the filter bag 220. After the clean air passes through the filter bag 220, it leaves the filter bag 220 from the air vent and finally leaves the shell 110 through the air outlet 114.

[0042] As the dust removal work proceeds, the dust layer on the outer surface of the filter bag 220 gradually thickens, and the resistance of air passing through the filter bag 220 gradually increases. When the gas flow rate discharged from the filter bag 220 is less than the preset value, the spraying assembly 300 is started, and the high-pressure gas in the air compressor 330 is passed to the nozzle 320 through the pipe 310. The air valve connected to the nozzle 320 corresponding to the filter bag 220 that needs to be cleaned is opened, and compressed air is sprayed into the filter bag 220. Under the action of the high-pressure air, the dust on the filter bag 220 is removed. The filter bag 220 is detached from the filter bag 220, and then settles under the action of gravity, or slides downward along the inner wall of the outer cylinder 210, and finally falls into the ash hopper 120. The present invention cleans a single or multiple blocked filter bags 220 through the spraying assembly 300, and an outer cylinder 210 is arranged outside the filter bag 220 to separate the multiple filter bags 220, thereby solving the problem in the prior art that the bag dust collector sprays dust onto adjacent filter bags 220 during the cleaning process, causing cross contamination and affecting the cleaning effect and efficiency.

[0043] In a further embodiment, a tension spring 240 is connected between the flower plate 111 and the baffle 230, and a limit assembly 400 and a trigger assembly 500 are provided between the baffle 230 and the outer tube 210. The limit assembly 400 is used to maintain the distance between the baffle 230 and the flower plate 111 at a preset value, and the trigger assembly 500 is used to release the limit of the limit assembly 400 when the air flow rate flowing through the periphery of the baffle 230 is greater than a preset value.

[0044] When performing dust removal, the flow rate of air passing through the intact filter bag 220 is lower than the flow rate through the damaged filter bag 220. When the filter bag 220 is in an intact state, the limit assembly 400 keeps the distance between the baffle 230 and the flower plate 111 at a preset value. Once the filter bag 220 is damaged, air can enter the filter bag 220 through the damaged opening on the filter bag 220. At this time, the flow rate of the air is accelerated. At this time, the trigger assembly 500 releases the limit assembly 400, and the tension spring 240 drives the baffle 230 to move up quickly. When the baffle 230 moves up, the filter The lower end of the bag 220 moves upward synchronously, and wrinkles appear on the filter bag 220. The wrinkles seal the damaged part of the filter bag 220, thereby preventing the dust-laden gas from passing through the damaged part of the filter bag 220 and being discharged from the shell 110 from the air outlet 114, thereby ensuring the dust removal effect. When the dust collector is inspected and repaired, the intact filter bag 220 is in an extended state, and the damaged filter bag 220 is in a folded state. The damaged filter bag 220 can be easily distinguished from multiple intact filter bags 220, thereby improving maintenance efficiency and avoiding the dust removal efficiency being affected by excessive maintenance and replacement time.

[0045] In a further embodiment, the limiting assembly 400 includes a limiting ring 410 and a plurality of limiting protrusions 420; the plurality of limiting protrusions 420 are fixedly connected to the lower portion of the inner wall of the outer cylinder 210, and the limiting protrusions 420 extend radially inwardly along the outer cylinder 210; the limiting ring 410 is rotatably connected to the baffle 230 around its own axis, the limiting ring 410 is horizontally arranged, and a plurality of through holes are opened on the outer periphery of the limiting ring 410, and the through holes are consistent in shape, size and number with the limiting protrusions 420. In the initial state, there is a preset angle between the through holes and the limiting protrusions 420, and the trigger assembly 500 is used to rotate the limiting ring 410 around its own axis when the air flow rate passing through the outer periphery of the baffle 230 is greater than a preset value.

[0046] In the initial state, there is a preset angle between the through hole and the limiting protrusion 420, and the tension spring 240 tends to move the limiting ring 410 upward, but the limiting ring 410 is blocked by the limiting protrusion 420 and cannot move upward. When the filter bag 220 is damaged, air can enter the filter bag 220 through the damaged opening on the filter bag 220. At this time, the air flow speed is accelerated. At this time, the trigger component 500 drives the limiting ring 410 to rotate. When the through hole is opposite to the limiting protrusion 420, the tension spring 240 drives the limiting ring 410 to move upward. When the limiting ring 410 moves upward, it drives the baffle 230 to move upward synchronously, thereby causing the filter bag 220 to fold.

[0047] In a further embodiment, the trigger assembly 500 includes a rotating ring 510 and a plurality of fan blades 520. The rotating ring 510 is rotatably mounted on the lower portion of the baffle 230. The plurality of fan blades 520 are evenly distributed along the circumference of the rotating ring 510, and there is a preset angle between the fan blades 520 and the horizontal plane. The limit ring 410 is fixedly connected to the lower end of the rotating ring 510, and the position where the limit ring 410 contacts the outer cylinder 210 is frictionally transmitted.

[0048] Due to the friction between the limiting ring 410 and the outer cylinder 210, after the dust-laden gas enters the shell 110 through the air inlet 113, when the filter bag 220 is in a complete state, the flow speed of the air through the fan blades 520 is not enough to drive the fan blades 520 to rotate around the axis of the rotating ring 510. When the dust-laden air contacts the fan blades 520, it is guided by the fan blades 520. After the dust-laden air enters the filter chamber, it flows upward while rotating around the axis of the rotating ring 510. The dust in the air is thrown to the inner wall of the outer cylinder 210 under the action of centrifugal force, and then falls into the ash hopper 120 under the action of gravity.

[0049] When the filter bag 220 is damaged, the flow velocity of the air passing through the fan blade 520 increases, driving the fan blade 520 to rotate around the axis of the rotating ring 510. When the fan blade 520 rotates around the axis of the rotating ring 510, the rotating ring 510 rotates synchronously, and the rotating ring 510 drives the limiting ring 410 to rotate synchronously. After the limiting ring 410 rotates by a preset angle, the through hole faces the limiting protrusion 420, and the tension spring 240 drives the limiting ring 410 to move upward. When the limiting ring 410 moves upward, it drives the baffle 230 to move upward synchronously, thereby causing the filter bag 220 to fold.

[0050] In a further embodiment, a plurality of mounting holes are provided on the peripheral wall of the rotating ring 510, and a fan blade 520 is rotatably mounted in each mounting hole. A rotating assembly 600 is provided in the outer cylinder 210, and the rotating assembly 600 is used to drive the fan blade 520 to rotate around its own axis when the baffle 230 moves axially relative to the outer cylinder 210 until the fan blade 520 is in a position to block the gap between the outer cylinder 210 and the baffle 230.

[0051] The rotating assembly 600 includes a resistance column 610, a resistance disk 620 and a plurality of friction plates 630; the resistance column 610 extends vertically and is installed in the rotating ring 510 for up and down movement. The plurality of friction plates 630 are arranged vertically, extending along the radial direction of the resistance column 610, and are evenly distributed on the outer periphery of the upper end of the resistance column 610 along the circumference of the resistance column 610. The number of friction plates 630 is consistent with the number of fan blades 520. The friction plates 630 are arranged between the rotating shafts of two adjacent fan blades 520, and each friction plate 630 is frictionally transmitted with one fan blade 520; the resistance disk 620 is rotatably connected to the resistance column 610, and the resistance disk 620 moves up and down relative to the outer cylinder 210; the connection position of the resistance disk 620 and the resistance column 610 is frictionally transmitted, and the outer periphery of the resistance disk 620 is frictionally transmitted with the inner wall of the outer cylinder 210.

[0052] When the filter bag 220 is in an intact state and needs to be cleaned, the spray assembly 300 is started, and the high-pressure gas in the air compressor 330 is passed to the nozzle 320 through the pipe 310. The air valve connected to the nozzle 320 corresponding to the filter bag 220 that needs to be cleaned is opened, and compressed air is sprayed into the filter bag 220. Under the action of the high-pressure air, the dust on the filter bag 220 is separated from the filter bag 220, and then settles under the action of gravity, or slides downward along the inner wall of the outer cylinder 210. The baffle 230 moves downward under the thrust of the high-pressure air, and the baffle 230 drives the rotating ring 510 and the limit ring 410 to move downward synchronously. Due to the friction between the resistance disk 620 and the outer cylinder 210, when the rotating ring 510 moves downward, the rotating ring 510 moves axially relative to the resistance column 610. At the same time, the fan blades 520 roll relative to the friction plate 630, and the fan blades 520 rotate around their own axes, so that the fan blades 520 tend to be vertical, thereby avoiding the dust from being obstructed by the fan blades 520 in the process of falling into the ash hopper 120, thereby ensuring the cleaning effect.

[0053] When the filter bag 220 is damaged, the dust-laden air drives the fan blades 520 to rotate around the axis of the rotating ring 510, and the fan blades 520 drive the rotating ring 510, the limiting ring 410 and the resistance column 610 to rotate synchronously. When the through hole is opposite to the limiting protrusion 420, the tension spring 240 drives the baffle 230 to move upward, and the baffle 230 drives the rotating ring 510 and the limiting ring 410 to move upward synchronously. Due to the friction between the resistance disk 620 and the outer cylinder 210, when the rotating ring 510 moves upward, the rotating ring 510 moves axially relative to the resistance column 610. At the same time, the fan blades 520 roll relative to the friction plate 630, and the fan blades 520 rotate around their own axes until the fan blades 520 are in a horizontal state, blocking the gap between the outer cylinder 210 and the baffle 230, thereby preventing dust-laden gas from entering the filter cavity, further ensuring the dust removal effect when the filter bag 220 is damaged.

[0054] In a further embodiment, a synchronization ring 640 is coaxially provided above the resistance column 610, and the upper end of the friction plate 630 is fixedly connected to the synchronization ring 640. When the fan blade 520 rotates to a horizontal state around its own axis, the rotating shaft of the fan blade 520 contacts the synchronization ring 640. Thereafter, when the rotating ring 510 moves upward, it drives the resistance column 610 and the resistance plate 620 to move upward synchronously. When replacing the damaged filter bag 220, the structure inside the outer cylinder 210 can be quickly removed, making the maintenance work more convenient, further shortening the time for replacing the filter bag 220, and thus improving the dust removal efficiency.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A self-regulating pulse dust collector, characterized in that: Including frame, filter assembly, spray assembly and air pump; The frame is fixedly connected to a shell, and an ash hopper is provided at the lower end of the shell; a flower plate is fixedly connected to the middle of the shell, the flower plate is arranged horizontally, and a plurality of air holes are opened on the flower plate, an air inlet is opened on the lower side wall of the shell, and an air outlet is opened on the upper end of the shell above the flower plate; The number of filter assemblies is consistent with the number of air vents; multiple filter assemblies are arranged in a rectangular array in the shell; the filter assembly includes an outer cylinder, a filter bag and a baffle; the outer cylinder extends vertically, and the upper end of the outer cylinder is fixedly connected to the flower plate; each air vent is fixedly connected to a fixing ring; the filter bag is cylindrical and extends vertically, the upper end of the filter bag is fixedly connected to the fixing ring and is communicated with the air vent, and a filter cavity is defined between the outer cylinder and the filter bag; the baffle is connected to the filter bag for sealing the opening at the lower end of the filter bag; a tension spring is connected between the flower plate and the baffle, and a limit assembly and a trigger assembly are provided between the baffle and the outer cylinder, the limit assembly is used to keep the distance between the baffle and the flower plate at a preset value, and the trigger assembly is used to release the limit assembly when the air flow rate flowing through the periphery of the baffle is greater than the preset value; The limiting assembly includes a limiting ring and a plurality of limiting protrusions; the plurality of limiting protrusions are fixedly connected to the lower portion of the inner wall of the outer cylinder, and the limiting protrusions extend radially inwardly along the outer cylinder; the limiting ring is rotatably connected to the baffle around its own axis, the limiting ring is horizontally arranged, and a plurality of through holes are opened on the outer periphery of the limiting ring, and the through holes are consistent with the shape, size and number of the limiting protrusions. In the initial state, a preset angle is formed between the through holes and the limiting protrusions. The trigger assembly is used to rotate the limiting ring around its own axis when the air flow rate flowing through the outer periphery of the baffle is greater than a preset value; The trigger assembly includes a rotating ring and a plurality of fan blades. The rotating ring is rotatably mounted on the lower portion of the baffle. The plurality of fan blades are evenly distributed along the circumference of the rotating ring, and a preset angle exists between the fan blades and the horizontal plane. A limiting ring is fixedly connected to the lower end of the rotating ring, and a friction transmission is performed at the position where the limiting ring contacts the outer cylinder. A plurality of mounting holes are opened on the peripheral wall of the rotating ring, and a fan blade is rotatably mounted in each mounting hole. A rotating assembly is arranged in the outer cylinder. The rotating assembly is used to drive the fan blades to rotate around their own axes when the baffle moves axially relative to the outer cylinder until the fan blades are in a position to block the gap between the outer cylinder and the baffle. The spray assembly is used to spray compressed air into a single or multiple filter bags; The air pump is used to allow the gas to enter the shell from the air inlet, pass through the filter cavity, pass through the filter bag, and be discharged from the shell from the air outlet.

2. A self-regulating pulse dust collector according to claim 1, characterized in that: The rotating assembly includes a resistance column, a resistance disk and multiple friction plates; the resistance column extends vertically and is installed in the rotating ring for up and down movement. The multiple friction plates are arranged vertically, extend along the radial direction of the resistance column, and are evenly distributed on the outer periphery of the upper end of the resistance column along the circumference of the resistance column. The number of friction plates is consistent with the number of fan blades. The friction plate is arranged between the rotating shafts of two adjacent fan blades, and each friction plate is frictionally transmitted with a fan blade; the resistance disk is rotatably connected to the resistance column, and the resistance disk moves up and down relative to the outer cylinder; the connection position of the resistance disk and the resistance column is frictionally transmitted, and the outer periphery of the resistance disk is frictionally transmitted with the inner wall of the outer cylinder.

3. A self-regulating pulse dust collector according to claim 2, characterized in that: A synchronization ring is coaxially arranged above the resistance column.

4. The self-regulating pulse dust collector according to claim 1, characterized in that: There are multiple spray assemblies, which are evenly distributed along the front-to-back direction. The spray assemblies include pipes and multiple nozzles. The pipes extend along the left-right direction. The multiple nozzles are evenly distributed along the axial direction of the pipes. Each nozzle corresponds to a filter bag. An air compressor is provided on the shell, and multiple pipes are connected to the air compression device. Each nozzle is connected to an air valve.

5. The self-regulating pulse dust collector according to claim 1, characterized in that: An inspection platform is provided on the periphery of the shell; an inspection staircase is fixedly installed on the frame, and the upper end of the inspection staircase leads to the inspection platform.

6. A self-regulating pulse dust collector according to claim 5, characterized in that: The inspection stairs are equipped with protective nets.

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