CN117504455A - A pulse-jet flat bag dust collector with automatic nozzle protection - Google Patents

Abstract

The invention discloses a pulse blowing flat cloth bag dust collector with an automatic protection nozzle, which relates to the technical field of dust collectors and comprises a dust collection box, wherein an air outlet is fixedly connected to the upper right side of the dust collection box, an air inlet is fixedly connected to the upper left side of the dust collection box, an air duct is fixedly connected to one end of the air inlet close to the dust collection box, the air duct is fixedly connected to the inside of the dust collection box, air ejector pipes are fixedly connected to the lower end of the air duct at equal intervals, the inclination angles of all drainage plates can be changed at the same time, the angles of compressed air ejected from the air ejector pipes can be adjusted, the compressed air ejected from the air ejector pipes can be prevented from directly colliding with the surfaces of filter bags, the abrasion and damage risks of the filter bags are reduced, the impact force on the filter bags is reduced, the service life of the filter bags is prolonged, the condition that the air ejector pipes are damaged due to the impact force of the compressed air is prevented from vibrating is prevented, and the safety of the air ejector pipes in the working process is improved.

Description

A pulse-jet flat bag dust collector with automatic nozzle protection

Technical field

The invention relates to the technical field of dust collectors, specifically a pulse jet flat bag dust collector with automatic nozzle protection.

Background technique

The pulse jet flat bag dust collector is a kind of industrial dust removal equipment that can be used to remove particles, dust and flue gas generated during industrial production. It uses pulse technology to spray compressed air onto the bag and perform multi-air filtration. dust removal;

However, when the existing dust collector sprays compressed air on the bag, the staff needs to manually adjust the angle of each nozzle to avoid the angle of the nozzle ejecting air from tilting during the working process. If the injection angle is too direct or impacts the bag too much, , will cause excessive vibration, squeezing or impact of the bag, which will not only damage the structure and performance of the bag, but also reduce the filtration effect of the bag, causing the filtered particles inside the bag to spill out and fall into the dust collector, causing serious damage to the dust collector. The internal structure is damaged, and during the vibration of the bag, the connection between the bag and the nozzle will cause the nozzle to vibrate synchronously, causing the nozzle to become loose or damaged;

Secondly, when the nozzle compresses and sprays the air containing particles, dust and smoke onto the bag, the spray angle is generally a fixed angle. This not only allows the nozzle to focus on a certain point or area. The spray cannot come into contact with other areas of the bag, causing different locations of the bag to be contaminated to different degrees, which reduces the practicality of the bag. Moreover, spraying at a fixed angle will cause the nozzle to directly impact the designated position of the bag continuously, increasing the risk of damage to the bag. risk.

Therefore, we proposed a pulse-jet flat bag dust collector with automatic nozzle protection to solve the above problems.

Contents of the invention

(1) Technical problems solved

In view of the shortcomings of the prior art, the present invention provides a pulse jet flat bag dust collector that automatically protects the nozzles, which can effectively solve the problem in the prior art that workers need to manually adjust the angles of each nozzle.

(2) Technical solutions

In order to achieve the above objects, the objects of the present invention can be achieved through the following technical solutions:

A pulse jet flat bag dust collector with automatic nozzle protection, including a dust removal box. An air outlet is fixedly connected to the upper right side of the dust removal box. An air inlet is fixedly connected to the upper left side of the dust removal box. The air inlet An air guide pipe is fixedly connected to one end close to the dust removal box, and the air guide pipe is fixedly connected to the inside of the dust removal box. The lower end of the air guide pipe is fixedly connected to an ejection pipe at an equal distance, and the lower ends of the air flow pipes are fixedly connected to a filter bag. The filter bag They are all fixedly connected to the dust removal box. A jet angle adjustment mechanism is provided between the jet pipe and the dust removal box. The jet angle adjustment mechanism is used to control the angle at which gas is ejected inside the jet pipe. The jet angle adjustment mechanism is provided with There is an intermittent control mechanism. The intermittent control mechanism includes a mounting frame. The mounting frame is fixedly connected to the upper end surface of the dust removal box. The intermittent control mechanism is used to intermittently turn the jet angle adjustment mechanism to operate.

As a further solution of the present invention: the air jet angle adjustment mechanism includes a lifting plate, the lower end surface of the lifting plate is equidistantly connected with connecting rods, and the connecting rods are all slidingly connected between the dust removal box and the air guide pipe. The connecting rods are all located in the injection pipe. The outer surface of the connecting rod is slidingly connected to the limiting block. The four corners of the limiting block are fixedly connected to connecting blocks. The connecting blocks are fixedly connected to the inner wall of the injection pipe. The connecting blocks are The end faces are all beveled.

As a further solution of the present invention: a fixed block is fixedly connected to the lower end of the connecting rod, and extension plates are slidably connected to the side walls of the fixed blocks. The extension plates are alternately distributed, and the upper surfaces of the extension plates all rotate. A guide plate is connected, and one end of the guide plate away from the extension plate is rotatably connected to the side wall of the limiting block.

As a further solution of the present invention: the left and right sides of the lifting plate are rotatably connected to jacking plates, and the end of the jacking plate away from the lifting plate is rotatably connected to a sliding plate, and the sliding plate is slidingly connected to the upper end surface of the dust removal box, so A connecting plate is fixedly connected between the upper end surfaces of the sliding plate.

As a further solution of the present invention: a through groove is provided in the center of the connecting plate, a connecting column is slidably connected in the through groove, a lever is fixedly connected to the upper end of the connecting pillar, and a rotating shaft is fixedly connected to the upper end of the lever. , the rotating shaft is connected to the mounting bracket through rotation.

As a further solution of the present invention: a drive shaft is rotatably connected to the upper end of the mounting frame, a drive source is fixedly connected to the upper end of the drive shaft, a sector gear is fixedly connected to the outer surface of the drive shaft, and the rear side of the sector gear is meshed and connected. There is a transmission gear, which is fixedly connected to the outer surface of the rotating shaft.

As a further solution of the present invention: a ratchet is fixedly connected to the outer surface of the rotating shaft, the ratchet is located below the transmission gear, the front side of the ratchet is fitted with a pawl, and the pawl is rotatably connected to the upper end surface of the mounting frame.

As a further solution of the present invention: a torsion spring is fixedly connected to the upper end surface of the mounting frame, and the end of the torsion spring away from the mounting frame is fixedly connected to the pawl.

(3) Beneficial effects

Compared with the existing technology, the present invention provides a pulse-jet flat bag dust collector with automatic nozzle protection, which has the following beneficial effects:

1. When driving the lifting plate to rise, through the connecting rod, fixed block and limit block, the inclination angle of each guide plate can be changed at the same time, thereby adjusting the angle of the compressed gas ejected from the injection pipe, which can not only avoid the impact of the injection pipe The compressed gas discharged directly collides with the surface of the filter bag, reducing the risk of wear and damage of the filter bag, making the jet air flow gentler, reducing the impact on the filter bag, extending the service life of the filter bag, and preventing the filter bag from being affected by the compressed gas The impact force affects the vibration and causes damage to the jet pipe, so the jet pipe should be protected to improve the safety of the jet pipe during work.

2. Through the set jet angle adjustment mechanism, the lifting plate can be driven to move up and down according to the needs of the staff, and the angle of the guide plate is always adjusted so that the compressed air in the jet pipe can be sprayed evenly throughout the filter bag. It not only avoids over-injection or under-injection, reduces unnecessary energy consumption, and improves energy utilization efficiency, but also distributes the jet air flow more evenly on the surface of the filter bag, making the cleaning effect more comprehensive.

3. Through the set intermittent control mechanism, the rotating shaft can be pushed to rotate intermittently, so that the compressed air jet stays at various angles, which not only balances the cleaning intensity and ensures that every position of the filter bag can be properly cleaned, but also can better Adapt to different filter bag layouts to ensure that each filter bag can be properly cleaned and give full play to the role of the dust collector.

Description of drawings

In order to facilitate understanding by those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings.

Figure 1 is a schematic diagram of the overall structure of the present invention;

Figure 2 is an enlarged structural schematic diagram of area A in Figure 1 of the present invention;

Figure 3 is a schematic diagram of the internal structure of the dust removal box of the present invention;

Figure 4 is a schematic diagram of the connection structure of the jet angle adjustment mechanism of the present invention;

Figure 5 is a schematic diagram of the connection structure between the rotating shaft and the mounting bracket of the present invention;

Figure 6 is a schematic diagram of the connection structure between the connecting rod and the air guide tube of the present invention;

Figure 7 is a schematic diagram of the internal structure of the jet pipe of the present invention;

Figure 8 is a partial structural diagram of the jet pipe in the present invention.

In the picture: 1. Dust removal box; 2. Air inlet; 3. Air outlet;

4. Jet angle adjustment mechanism; 401, rotating shaft; 402, lever; 403, connecting column; 404, connecting plate; 405, through groove; 406, lifting plate; 407, connecting rod; 408, sliding plate; 409, jacking plate ; 410. Fixed block; 411. Limiting block; 412. Connecting block; 413. Drainage plate; 414. Extension plate;

5. Intermittent control mechanism; 501. Mounting frame; 502. Drive shaft; 503. Sector gear; 504. Transmission gear; 505. Ratchet; 506. Pawl; 507. Torsion spring;

6. Air guide tube; 7. Jet tube; 8. Filter bag.

Detailed ways

The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some 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 those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

A pulse-jet flat bag dust collector with automatic nozzle protection in this embodiment, as shown in Figures 1 to 8, includes a dust removal box 1, an air outlet 3 is fixedly connected to the upper right side of the dust removal box 1, and an air outlet 3 is fixedly connected to the left side of the dust removal box 1 There is an air inlet 2 fixedly connected at the top, and an air guide pipe 6 is fixedly connected to one end of the air inlet 2 close to the dust removal box 1. The air guide pipe 6 is fixedly connected inside the dust removal box 1. The lower end of the air guide pipe 6 is fixedly connected to a jet pipe 7 at an equal distance. The lower ends of the air pipes 7 are fixedly connected with filter bags 8, and the filter bags 8 are fixedly connected in the dust removal box 1. A jet angle adjustment mechanism 4 is provided between the jet pipe 7 and the dust removal box 1. The jet angle adjustment mechanism 4 is used to control the jet pipe. 7The angle at which the internal gas is ejected.

In this embodiment, as shown in Figures 4 and 6 to 8, the air jet angle adjustment mechanism 4 includes a lifting plate 406. The lower end of the lifting plate 406 is equidistantly connected to connecting rods 407. The connecting rods 407 are all slidingly connected to the dust collector. Between the box 1 and the air guide pipe 6, the connecting rod 407 is located in the injection pipe 7. The outer surface of the connecting rod 407 is slidingly connected to the limiting block 411. The four corners of the limiting block 411 are fixedly connected with connecting blocks 412, and the connecting blocks 412 are fixed. Connected to the inner wall of the jet pipe 7, the upper end surfaces of the connecting blocks 412 are all inclined surfaces. Through the upper end surfaces of the connecting blocks 412 being inclined surfaces, the compressed gas ejected from the jet pipe 7 can be evenly guided to the guide plate 413 between the connecting blocks 412. superior.

In this embodiment, as shown in Figures 6 to 8, a fixed block 410 is fixedly connected to the lower end of the connecting rod 407, and extension plates 414 are slidably connected to the side walls of the fixed block 410. The extension plates 414 are alternately distributed. The upper end faces of 414 are all rotatably connected to the guide plate 413, and the end of the guide plate 413 away from the extension plate 414 is rotatably connected to the side wall of the limit block 411. When the connecting rod 407 drives the fixed block 410 to rise close to the limit block 411, by extending The plate 414 can push the air guide plate 413 to rotate on the side wall of the limiting block 411, thereby changing the inclination angle of the air guide plate 413.

In this embodiment, as shown in Figure 4, the left and right sides of the lifting plate 406 are rotatably connected to a lifting plate 409. The end of the lifting plate 409 away from the lifting plate 406 is rotatably connected to a sliding plate 408. The sliding plate 408 is both slidingly connected to the dust removal box. 1 upper end surface, the upper end surface of the sliding plate 408 is fixedly connected with a connecting plate 404. When the sliding plate 408 reciprocates on the upper end surface of the dust removal box 1, the lifting plate 409 can drive the lifting plate 406 to reciprocate up and down.

In this embodiment, as shown in Figure 2, a through groove 405 is provided in the center of the connecting plate 404. A connecting column 403 is slidably connected in the through groove 405. A lever 402 is fixedly connected to the upper end of the connecting pillar 403, and the upper end of the lever 402 is fixed. A rotating shaft 401 is connected, and the rotating shaft 401 is connected to the mounting bracket 501 for rotation. When the rotating shaft 401 rotates, the lever 402 can drive the connecting column 403 to reciprocally slide in the through groove 405, and stir the connecting plate 404 to reciprocate.

The effects achieved here are as follows: In the existing technology, workers need to manually adjust the angle of each nozzle to avoid the angle at which the nozzle ejects air from tilting during the working process. If the injection angle is too direct or impacts the bag too much, the bag will be damaged. Excessive vibration, squeezing or impact will not only damage the structure and performance of the bag, but also reduce the filtering effect of the bag, causing the filtered particles inside the bag to spill out and fall into the dust collector, causing damage to the internal structure of the dust collector. situation occurs, and during the vibration of the bag, since the bag and the nozzle are connected, the nozzle will vibrate synchronously, causing the nozzle to become loose or damaged. Compared with the existing technology, the position of each guide plate 413 can be changed at the same time. Inclination angle, thereby adjusting the angle of the compressed gas ejected from the injection pipe 7, can not only avoid the direct collision between the compressed gas ejected from the injection pipe 7 and the surface of the filter bag 8, but also reduce the risk of wear and damage of the filter bag 8, so that The jet air flow is gentler, reducing the impact on the filter bag 8, extending the service life of the filter bag 8, and preventing the filter bag 8 from vibrating due to the impact of the compressed gas, causing damage to the jet pipe 7, and causing damage to the jet pipe. 7 be protected to improve the safety of the jet pipe 7 during work;

Secondly, according to the needs of the staff, the lifting plate 406 can be driven to reciprocate up and down, and the angle of the guide plate 413 can be adjusted at all times, so that the compressed air in the injection pipe 7 can be sprayed evenly throughout the filter bag 8, which not only avoids In the case of over-injection or under-injection, unnecessary energy consumption is reduced, energy utilization efficiency is improved, and the jet air flow can be more evenly distributed on the surface of the filter bag 8, making the cleaning effect more comprehensive.

In other aspects, this embodiment also provides an intermittent control mechanism 5 mechanism for intermittently turning the jet angle adjustment mechanism 4 to operate. As shown in Figures 1, 2 and 5, the intermittent control mechanism 5 includes a mounting bracket 501 , the mounting frame 501 is fixedly connected to the upper end surface of the dust removal box 1, the upper end face of the mounting frame 501 is rotatably connected to a driving shaft 502, the upper end of the driving shaft 502 is fixedly connected to a driving source, the outer surface of the driving shaft 502 is fixedly connected to a sector gear 503, and the sector gear 503 A transmission gear 504 is meshedly connected to the rear side, and the transmission gear 504 is fixedly connected to the outer surface of the rotating shaft 401 .

In this embodiment, as shown in Figure 5, a ratchet 505 is fixedly connected to the outer surface of the rotating shaft 401. The ratchet 505 is located below the transmission gear 504. The front side of the ratchet 505 is fitted with a pawl 506. The pawl 506 is rotatably connected to the mounting bracket 501. On the end surface, the pawl 506 and the ratchet wheel 505 limit each other, which can prevent the rotating shaft 401 from reversing.

In this embodiment, as shown in Figure 5, a torsion spring 507 is fixedly connected to the upper end surface of the mounting bracket 501. The end of the torsion spring 507 away from the mounting bracket 501 is fixedly connected to the pawl 506. Through the provided torsion spring 507, the rotation shaft 401 can be rotated. In the process of driving the ratchet wheel 505 to rotate normally, the ratchet pawl 506 and the ratchet wheel 505 are always pushed to fit together.

The effects achieved here are as follows: Compared with the existing technology, the rotating shaft 401 can be intermittently pushed to rotate, so that the compressed air jet stays at various angles, which not only balances the cleaning intensity, but also ensures that every position of the filter bag 8 can be properly cleaned. Cleaning, and can better adapt to different filter bag layouts, ensuring that each filter bag can be properly cleaned and give full play to the role of the dust collector.

The working process and principles involved in the overall content of the above embodiment are as follows:

First working status:

Before using the dust removal box 1 to filter particles, dust and flue gas, the staff can manually drive the rotating shaft 401 to rotate on the mounting bracket 501, and use the lever 402 connected to the lower end of the rotating shaft 401 to move the connecting column 403 with the rotating shaft 401 as the The center of the circle moves synchronously. With the movement of the connecting column 403, the connecting column 403 can slide in the through groove 405 opened on the connecting plate 404, and at the same time, the connecting plate 404 is moved to follow the movement of the connecting column 403, driving the lower end surface of the connecting plate 404. The connected sliding plate 408 slides from the front to the rear side of the upper end of the dust removal box 1, pushing the lifting plate 409 connected to the upper end of the sliding plate 408 to move from an inclined state to a vertical state. At this time, as the state of the lifting plate 409 changes, The lifting plate 406 can drive the connecting rod 407 to slide out of the dust removal box 1 synchronously. The driving connecting rod 407 slides upward on the limiting block 411, and at the same time drives the fixed block 410 to rise close to the limiting block 411. When the fixed block 410 approaches the limiting block During the process of positioning the block 411, the extension plate 414 that is slidingly connected on the side wall of the fixed block 410 can be driven up simultaneously, and the lower end of the flow guide plate 413 that is rotated and connected to the upper end surface of the extension plate 414 can be pushed up simultaneously, driving the flow guide plate 413 from approaching to Movement from vertical to inclined, and as the guide plate 413 changes, the extension plate 414 can be moved to slide out from the inside of the fixed block 410 to support the guide plate 413. At this time, when the jet pipe 7 sprays out the compressed air, The air will flow along the inclined surface of the guide plate 413 to adjust the angle of the compressed gas ejected from the injection pipe 7, which can not only avoid direct collision between the compressed gas ejected from the injection pipe 7 and the surface of the filter bag 8, but also reduce the number of filter bags. The risk of wear and damage of the filter bag 8 makes the jet airflow smoother, reduces the impact on the filter bag 8, extends the service life of the filter bag 8, and prevents the filter bag 8 from vibrating due to the impact of the compressed gas, which has a negative impact on the jet pipe 7 In case of damage, the spray pipe 7 is protected to improve the safety of the spray pipe 7 during work. After the adjustment of the inclination angle of the guide plate 413 is completed, the dust removal box 1 can be opened for work.

Second working status:

When the staff drives the rotating shaft 401 to continue rotating, through the lever 402, the connecting column 403, the through groove 405 and the connecting plate 404, the sliding plate 408 can be driven to slide back and forth in front of the upper end of the dust removal box 1, pushing the lifting plate 409 from the inclined shape to the Switching back and forth between the vertical positions drives the lifting plate 406, the connecting rod 407 and the fixed block 410 to reciprocate up and down. At this time, as the fixed block 410 reciprocates, the drainage connection between the extension plate 414 and the limiting block 411 is rotated. The inclination angle of the plate 413 will also change back and forth, so that the compressed air in the injection pipe 7 can be sprayed evenly throughout the filter bag 8, which not only avoids over-injection or under-injection, but also reduces unnecessary energy. consumption, improve energy utilization efficiency, and can distribute the jet air flow more evenly on the surface of the filter bag 8, making the cleaning effect more comprehensive;

When the worker drives the drive shaft 502 to rotate on the installation frame 501 through the driving source, the drive shaft 502 will synchronously drive the sector gear 503 to rotate, and is meshed and connected with the sector gear 503 and the transmission gear 504, so that the rotating shaft 401 can be intermittently moved during installation. The frame 501 continues to rotate in the same direction, so that the compressed air jet stays at various angles, which not only balances the cleaning intensity and ensures that every position of the filter bag 8 can be properly cleaned, but also can better adapt to different filter bags. 8 layout to ensure that each filter bag 8 can be properly cleaned and give full play to the role of the dust collector;

When the rotating shaft 401 continues to rotate intermittently in the same direction, there will be a separation gap with the transmission gear 504 according to the working state of the sector gear 503. At this time, if the rotating shaft 401 is affected by external factors, such as wind, it will rotate in the opposite direction. , when the rotating shaft 401 reverses, it will synchronously drive the ratchet 505 to reverse, and the ratchet 505 is limited by the pawl 506 and cannot rotate in the reverse direction, thus avoiding the separation process of the sector gear 503 and the transmission gear 504. , the rotating shaft 401 rotates reversely due to external factors.

The preferred embodiments of the invention disclosed above are only intended to help illustrate the invention. The preferred embodiments do not describe all details, nor do they limit the invention to the specific implementations described. Obviously, many modifications and variations are possible in light of the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can better understand and utilize the present invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (8)

1. The utility model provides an automatic pulse jetting flat bag dust remover of protection nozzle, includes dust removal case (1), dust removal case (1) right side top fixedly connected with gas outlet (3), dust removal case (1) left side top fixedly connected with air inlet (2), air inlet (2) are close to dust removal case (1) one end fixedly connected with air duct (6), air duct (6) fixedly connected with is inside dust removal case (1), air duct (6) lower extreme equidistance fixedly connected with jet-propelled pipe (7), equal fixedly connected with of jet-propelled pipe (7) lower extreme is crossed filter bag (8), it is in dust removal case (1) to cross equal fixedly connected with of filter bag (8), its characterized in that:

an air injection angle adjusting mechanism (4) is arranged between the air injection pipe (7) and the dust removal box (1), and the air injection angle adjusting mechanism (4) is used for controlling the angle of air injection in the air injection pipe (7);

the air injection angle adjusting mechanism (4) is provided with an intermittent control mechanism (5), the intermittent control mechanism (5) comprises a mounting frame (501), the mounting frame (501) is fixedly connected to the upper end face of the dust removal box (1), and the intermittent control mechanism (5) is used for intermittently stirring the air injection angle adjusting mechanism (4) to operate.

2. The pulse blowing flat bag-type dust collector with the automatic protection nozzle according to claim 1, wherein the air injection angle adjusting mechanism (4) comprises a lifting plate (406), connecting rods (407) are fixedly connected to the lower end face of the lifting plate (406) at equal intervals, the connecting rods (407) are all connected between the dust collection box (1) and the air duct (6) in a penetrating and sliding mode, the connecting rods (407) are all located in the air duct (7), limiting blocks (411) are connected to the outer surfaces of the connecting rods (407) in a sliding mode, connecting blocks (412) are fixedly connected to four corners of the limiting blocks (411), the connecting blocks (412) are all fixedly connected to the inner wall of the air duct (7), and the upper end faces of the connecting blocks (412) are inclined planes.

3. The pulse blowing flat bag-type dust collector with the automatic protection nozzle according to claim 2, wherein the lower end of the connecting rod (407) is fixedly connected with a fixed block (410), extension plates (414) are all connected to the side wall of the fixed block (410) in a penetrating and sliding manner, the extension plates (414) are alternately distributed, the upper end faces of the extension plates (414) are all rotationally connected with drainage plates (413), and one ends, far away from the extension plates (414), of the drainage plates (413) are all rotationally connected to the side wall of the limiting block (411).

4. The pulse blowing flat bag-type dust collector with the automatic protection nozzle according to claim 2, wherein the left side and the right side of the lifting plate (406) are respectively connected with a lifting plate (409) in a rotating mode, one end, far away from the lifting plate (406), of the lifting plate (409) is respectively connected with a sliding plate (408) in a rotating mode, the sliding plates (408) are respectively connected with the upper end face of the dust collection box (1) in a sliding mode, and connecting plates (404) are fixedly connected between the upper end faces of the sliding plates (408).

5. The pulse blowing flat bag-type dust collector with the automatic protection nozzle according to claim 4, wherein a through groove (405) is formed in the center of the connecting plate (404), a connecting column (403) is connected in a sliding manner in the through groove (405), a deflector rod (402) is fixedly connected to the upper end of the connecting column (403), a rotating shaft (401) is fixedly connected to the upper end face of the deflector rod (402), and the rotating shaft (401) is connected to the mounting frame (501) in a penetrating and rotating manner.

6. The pulse blowing flat bag-type dust collector with the automatic nozzle protection function according to claim 5, wherein the upper end face of the mounting frame (501) is rotationally connected with a driving shaft (502), the upper end of the driving shaft (502) is fixedly connected with a driving source, the outer surface of the driving shaft (502) is fixedly connected with a sector gear (503), the rear side of the sector gear (503) is in meshed connection with a transmission gear (504), and the transmission gear (504) is fixedly connected to the outer surface of the rotating shaft (401).

7. The pulse blowing flat bag-type dust collector with the automatic protection nozzle according to claim 6, wherein a ratchet wheel (505) is fixedly connected to the outer surface of the rotating shaft (401), the ratchet wheel (505) is located below the transmission gear (504), a pawl (506) is attached to the front side of the ratchet wheel (505), and the pawl (506) is rotatably connected to the upper end face of the mounting frame (501).

8. The pulse blowing flat bag-type dust collector with the automatic protection nozzle according to claim 7, wherein a torsion spring (507) is fixedly connected to the upper end face of the mounting frame (501), and one end, away from the mounting frame (501), of the torsion spring (507) is fixedly connected to a pawl (506).