A dust removal device for dust collection bin air inlet that effectively prevents dust return

Abstract

The present invention relates to the field of air inlet cleaning, and in particular to a dust removal device for an air inlet of a dust collecting bin that can effectively prevent dust from returning. The technical problem of the present invention is that the traditional cleaning method is relatively simple, and the cleaning of the inner wall of the air inlet pipe is not comprehensive and thorough enough. A dust removal device for an air inlet of a dust collecting bin that can effectively prevent dust from returning includes a dust collecting bin frame, an air inlet pipe, an air pump, a drive motor, etc.; an air inlet pipe is fixedly connected to one side of the upper part of the dust collecting bin frame, and the air inlet pipe is connected to the dust collecting bin frame, and an air pump and a drive motor are fixedly connected to one side of the upper part of the dust collecting bin frame close to the air inlet pipe. The air outlet pipe and the rotating disk make a circular motion around the center of the air inlet pipe, and the toggle block will toggle the rotating disk, so that the rotating disk rotates a certain angle, switching the connection position between the threaded through groove on the barrier pipe and the long air outlet on the air outlet pipe, so that the air outlet of the air outlet pipe is more concentrated and the air outlet position is changed, thereby removing the dust on the inner wall of the air inlet pipe more thoroughly and comprehensively.

Description

Technical Field

[0001] The invention relates to the field of air inlet cleaning, and in particular to a dust removal device for an air inlet of a dust collecting bin which can effectively prevent dust from returning. Background Art

[0002] A dust bin is an enclosed space used to collect harmful gases such as dust and haze in industrial production. It is mainly used to filter and purify the air and prevent indoor air pollution. The working principle of a dust bin is to use high-efficiency filtration to allow dust-laden gas to enter the room from the air inlet of the dust bin. The filter in the dust bin then filters the dust-laden gas, attaches the dust particles to the filter, and finally discharges the filtered clean air.

[0003] An air intake pipe is usually installed at the air inlet of the dust collection bin. Dust and impurities are easily attached to the inner wall of the air intake pipe, and the impurities in the air intake pipe need to be cleaned in time. The traditional method is generally to clean the air intake pipe with a brush, but this cleaning method is relatively simple and the brush is prone to wear and tear. The cleaning of the inner wall of the air intake pipe is not comprehensive and thorough enough. Over time, thick dust will accumulate on the inner wall of the air intake pipe, making it inconvenient for the air intake pipe to enter. Summary of the invention

[0004] In order to solve the problem that traditional cleaning methods are relatively single and the cleaning of the inner wall of the air intake pipe is not comprehensive and thorough enough, the present invention provides a dust removal device at the air inlet of a dust collection bin which can effectively prevent dust return. The dust on the inner wall of the air intake pipe can be cleaned by airflow and scrapers, and the cleaning is more thorough and comprehensive, so that the air intake pipe can be better supplied with air.

[0005] The technical solution is as follows: A dust removal device at the air inlet of a dust collecting bin which effectively prevents dust from returning comprises a dust collecting bin frame, an air inlet pipe, an air pump, a driving motor, a purge assembly and an adjustable air outlet assembly. An air inlet pipe is fixedly connected to one side of the upper portion of the dust collecting bin frame, and the air inlet pipe is communicated with the dust collecting bin frame. An air pump and a driving motor are fixedly connected to one side of the upper portion of the dust collecting bin frame close to the air inlet pipe. The air pump and the driving motor are respectively located on both sides of the air inlet pipe. A purge assembly is provided on the air inlet pipe, and the purge assembly is used to clean the dust on the inner wall of the air inlet pipe. An adjustable air outlet assembly is provided on the purge assembly, and the adjustable air outlet assembly enables the purge assembly to remove the dust on the inner wall of the air inlet pipe more thoroughly and comprehensively.

[0006] Optionally, the purge assembly includes a large pulley, a small pulley, a flat belt, a support ring, a guide ring, a support tube, a hose, an air outlet pipe and a connecting block, wherein the large pulley is fixedly connected to one end of the air inlet pipe, the large pulley is located in the dust collecting bin frame, the small pulley is fixedly connected to the output shaft of the driving motor, a flat belt is wound around the small pulley and the large pulley, the large pulley is fixedly connected to the support ring, two arrows are provided on the side of the support ring away from the air inlet pipe, the direction of the arrows is the rotation direction of the support ring, the support ring is fixedly connected to the guide ring, the guide ring is located inside one end of the air inlet pipe, the support ring is rotatably connected to the support tube, one end of the support tube is rotatably connected to the hose, the end of the support tube away from the hose is rotatably connected to the air outlet pipe, one end of the support tube is connected to the hose, the other end of the support tube is connected to the air outlet pipe, a connecting block is fixedly connected between the air outlet pipe and the support ring, and the connecting block is located inside one end of the air inlet pipe.

[0007] Optionally, a long air outlet is provided on the air outlet pipe.

[0008] Optionally, the air outlet adjustment component includes a barrier tube, a rotating disk and a toggle block. The barrier tube is fixedly connected to the end of the support tube away from the hose. The air outlet pipe is rotatably connected to the barrier tube. A threaded through groove is opened on the barrier tube. The threaded through groove on the barrier tube is connected to the long air outlet on the air outlet pipe. A rotating disk is fixedly connected to the support tube. A toggle block is fixedly connected to the side of the upper part of the dust collecting bin frame close to the air pump. The toggle block is used to toggle the rotating disk.

[0009] Optionally, a scraping assembly is also included, which is arranged on the air outlet pipe. The scraping assembly includes a support seat, a scraper, a support spring and a pressing frame. Several support seats are fixedly connected to the outer wall of the air outlet pipe, and scrapers are slidably connected between the support seats. Support springs are connected between the scraper and each support seat. A pressing frame is fixedly connected to the support pipe, and the pressing frame is used to squeeze the scraper.

[0010] Optionally, a lifting component is also included, which is arranged on the air outlet pipe. The lifting component includes a support frame, a rubber plate and a push rod. Several support frames are fixedly connected to the air outlet pipe, and rubber plates are fixedly connected between the support frames. Two push rods are fixedly connected to the scraper, and the two push rods are in contact with the bottom of the rubber plate.

[0011] Optionally, it also includes a guide frame and an air outlet head. The guide frame is fixedly connected to one end of the air outlet pipe away from the support pipe. The guide frame is connected to the air outlet pipe. The guide frame is located inside the other end of the air inlet pipe. The guide frame is fixedly connected to a plurality of air outlet heads, and each air outlet head is connected to the guide frame.

[0012] Optionally, a separation ring is also included, and the separation ring is fixedly connected to one end of the air intake pipe close to the guide frame.

[0013] The beneficial effect is: the worker starts the air pump and the driving motor, the air pump draws air from the outside, so that the gas is transported to the support pipe through the hose, and then blown to the inner wall of the inlet pipe through the long air outlet on the outlet pipe, which can blow off the dust attached to the inner wall of the inlet pipe, thereby cleaning the inner wall of the inlet pipe. At the same time, the driving motor drives the small pulley to rotate through the output shaft, and the support ring drives the support pipe, the outlet pipe and the rotating disk to make circular motion around the center of the inlet pipe. The toggle block will toggle the rotating disk, so that the rotating disk rotates a certain angle, and the rotating disk will drive the support pipe and the barrier pipe to rotate a certain angle, and the outlet pipe will not rotate. The connection position of the threaded through groove on the barrier pipe and the long air outlet on the outlet pipe is switched, so that the outlet pipe can exhaust more concentratedly and the outlet position is changed, thereby removing the dust on the inner wall of the inlet pipe more thoroughly and comprehensively.

[0014] The scraper will come into contact with the dust and impurities on the inner wall of the intake pipe, so that the scraper will scrape the dust and impurities attached to the inner wall of the intake pipe, making it easier for the airflow ejected from the subsequent outlet pipe to clean these dust and impurities more fully. When the outlet pipe makes a circular motion around the center of the intake pipe, it will drive the support seat, scraper, support spring and pressing frame to make a circular motion around the center of the intake pipe. When the pressing frame rotates, it will contact the scraper, and the pressing frame will squeeze the scraper to move toward the inner wall of the intake pipe. At the same time, the scraper will make a circular motion around the center of the intake pipe. When the pressing frame continues to rotate, it will lose contact with the scraper, and the support spring will reset to drive the scraper to reset. When the scraper is reset, the dust attached to the surface of the scraper will be bounced off, thereby cleaning the surface of the scraper. In this way, the dust and impurities on the inner wall of the intake pipe can be continuously and further cleaned, making it easier for the intake pipe to intake air better.

[0015] The rubber plate makes a circular motion around the center of the air intake pipe to scoop up dust impurities with a certain thickness on the bottom of the inner wall of the air intake pipe. Some of the dust impurities fall on the rubber plate, and the rubber plate continues to rotate to drive some of the dust impurities to move upward. Then the rubber plate rotates to the upper part of the air intake pipe, and some of the dust impurities fall downward along the surface of the rubber plate. The airflow from the air inlet drives this part of the impurities into the dust collecting bin frame, thereby further cleaning the dust impurities on the inner wall of the air intake pipe and facilitating better air intake in the air intake pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic cross-sectional three-dimensional structure diagram of the dust collecting bin frame, air inlet pipe and air pump of the present invention.

[0018] Figure 3 It is a schematic cross-sectional three-dimensional structure diagram of the dust collecting bin frame, air inlet pipe, air pump and driving motor of the present invention.

[0019] Figure 4 For the present invention Figure 3Schematic diagram of the enlarged three-dimensional structure of A in the middle.

[0020] Figure 5 It is a schematic diagram of a partially cutaway three-dimensional structure of the purge assembly of the present invention.

[0021] Figure 6 It is a schematic diagram of the cross-sectional three-dimensional structure of the purge assembly, the guide frame and the separation ring of the present invention.

[0022] Figure 7 It is a partial three-dimensional structural schematic diagram of the scraping assembly, lifting assembly, guide frame and air outlet head of the present invention.

[0023] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged three-dimensional structure of B in the figure.

[0024] Fig. 9 It is a schematic diagram of the three-dimensional structure of the lifting assembly of the present invention.

[0025] Fig.10 It is a partial three-dimensional structural schematic diagram of the purge assembly of the present invention.

[0026] Fig.11 It is a schematic diagram of the cross-sectional three-dimensional structure of the support pipe, the air outlet pipe, the connecting block and the barrier pipe of the present invention.

[0027] Fig.12 It is a partial three-dimensional structural schematic diagram of the purge assembly and the lifting assembly of the present invention.

[0028] Fig.13 It is a schematic diagram of the split three-dimensional structure of the purge assembly, the air outlet regulating assembly and the lifting assembly of the present invention.

[0029] The markings of the components in the accompanying drawings are as follows: 1_dust bin frame, 2_air inlet pipe, 3_air pump, 4_driving motor, 51_large pulley, 52_small pulley, 53_flat belt, 54_support ring, 55_guide ring, 56_support pipe, 57_hose, 58_outlet pipe, 59_connecting block, 61_barrier pipe, 62_rotating disk, 63_sliding block, 71_support seat, 72_scraper, 73_support spring, 74_pressing frame, 81_support frame, 82_rubber plate, 83_top rod, 91_guide frame, 92_outlet head, 10_separating ring. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0031] Embodiment 1: A dust removal device for the air inlet of a dust collection bin that effectively prevents dust from returning, such as Figure 1-Figure 13 As shown, it includes a dust bin frame 1, an air inlet pipe 2, an air pump 3, a driving motor 4, a purge assembly and an adjustable air outlet assembly. The upper side of the dust bin frame 1 is connected with the air inlet pipe 2 through a flange, and the air inlet pipe 2 is communicated with the dust bin frame 1. The upper side of the dust bin frame 1 close to the air inlet pipe 2 is connected with the air pump 3 and the driving motor 4 through rivets. The air pump 3 and the driving motor 4 are respectively located on both sides of the air inlet pipe 2. A purge assembly is provided on the air inlet pipe 2, and the purge assembly is used to clean the dust on the inner wall of the air inlet pipe 2. The purge assembly is provided with an adjustable air outlet assembly, and the adjustable air outlet assembly allows the purge assembly to remove the dust on the inner wall of the air inlet pipe 2 more thoroughly and comprehensively.

[0032] The purge assembly includes a large pulley 51, a small pulley 52, a flat belt 53, a support ring 54, a guide ring 55, a support pipe 56, a hose 57, an air outlet pipe 58 and a connecting block 59. One end of the air inlet pipe 2 is connected to the large pulley 51 through a flat key. The large pulley 51 is located in the dust collecting bin frame 1. The output shaft of the drive motor 4 is connected to the small pulley 52 through a flat key. A flat belt 53 is wound between the small pulley 52 and the large pulley 51. A support ring 54 is fixed to the large pulley 51. Two arrows are provided on the side of the support ring 54 away from the air inlet pipe 2. The direction of the arrows is the rotation direction of the support ring 54. Direction, a guide ring 55 is fixedly connected to the support ring 54, and the guide ring 55 is located inside one end of the air inlet pipe 2. A support tube 56 is rotatably connected to the support ring 54, and a hose 57 is rotatably connected to one end of the support tube 56. An end of the support tube 56 away from the hose 57 is rotatably connected to an air outlet pipe 58, and the air outlet pipe 58 is used to blow out airflow, thereby blowing off the dust on the inner wall of the air inlet pipe 2. One end of the support tube 56 is connected to the hose 57, and the other end of the support tube 56 is connected to the air outlet pipe 58. A connecting block 59 is fixedly connected between the air outlet pipe 58 and the support ring 54, and the connecting block 59 is located inside one end of the air inlet pipe 2.

[0033] The air outlet pipe 58 is provided with a long air outlet.

[0034] The regulating air outlet assembly includes a barrier tube 61, a rotating disk 62 and a toggle block 63. The barrier tube 61 is fixedly connected to the end of the support tube 56 away from the hose 57. The air outlet pipe 58 is rotatably connected to the barrier tube 61. A threaded through groove is opened on the barrier tube 61. The threaded through groove on the barrier tube 61 is connected to the long air outlet on the air outlet pipe 58. The supporting tube 56 is connected to the rotating disk 62 by a flat key. A toggle block 63 is welded on one side of the upper part of the dust collecting bin frame 1 close to the air pump 3. The toggle block 63 is used to toggle the rotating disk 62.

[0035] First, wind enters the dust collecting bin frame 1 through the air inlet pipe 2. Dust impurities will gather in the air inlet pipe 2, and the air inlet pipe 2 needs to be dusted. The worker starts the air pump 3 and the driving motor 4. The air pump 3 draws air from the outside, so that the gas is transported to the support pipe 56 through the hose 57, and then blows to the inner wall of the air inlet pipe 2 through the long air outlet on the air outlet pipe 58, which can blow off the dust attached to the inner wall of the air inlet pipe 2, thereby cleaning the inner wall of the air inlet pipe 2. At the same time, the driving motor 4 drives the small pulley 52 to rotate through the output shaft, and the small pulley 52 drives the large pulley 51 to rotate through the flat belt 53, and the large pulley 51 drives the support ring 54 and the guide ring 55 to rotate. The support ring 54 rotates in the direction of the arrow on the support ring 54, and the support ring 54 brings The movable support pipe 56, the air outlet pipe 58 and the rotating disk 62 make a circular motion around the center of the air inlet pipe 2. The rotating disk 62 will contact the toggle block 63 during the circular motion. The toggle block 63 will toggle the rotating disk 62, so that the rotating disk 62 rotates a certain angle. The rotating disk 62 continues to make a circular motion and will be out of contact with the toggle block 63. The rotating disk 62 stops rotating. When the rotating disk 62 rotates a certain angle, the rotating disk 62 will drive the support pipe 56 and the barrier pipe 61 to rotate a certain angle, and the air outlet pipe 58 will not rotate. The threaded through groove on the barrier pipe 61 and the long air outlet on the air outlet pipe 58 are switched to connect the position, so that the air outlet pipe 58 can be discharged more concentratedly and the air outlet position is changed, so as to more thoroughly and comprehensively remove the dust on the inner wall of the air inlet pipe 2. When dust removal is required, the worker turns off the air pump 3 and the drive motor 4.

[0036] Embodiment 2: Based on embodiment 1, Figure 7-Figure 9 and Fig.13 As shown, a scraping assembly is also included, which is arranged on the outlet pipe 58. The scraping assembly includes a support seat 71, a scraper 72, a support spring 73 and a pressing frame 74. A plurality of support seats 71 are welded on the outer wall of the outlet pipe 58, and a scraper 72 is slidably connected between the plurality of support seats 71. The scraper 72 is used to scrape dust and impurities attached to the inner wall of the inlet pipe 2. A support spring 73 is connected between the scraper 72 and each support seat 71. A pressing frame 74 is fixedly connected to the support pipe 56, and the pressing frame 74 is used to squeeze the scraper 72.

[0037] When a certain thickness of dust impurities are attached to the inner wall of the intake pipe 2, the scraper 72 will come into contact with the dust impurities on the inner wall of the intake pipe 2, so that the scraper 72 scrapes the dust impurities attached to the inner wall of the intake pipe 2, so that the airflow ejected from the subsequent outlet pipe 58 can more fully clean these dust impurities. When the outlet pipe 58 makes a circular motion around the center of the intake pipe 2, it will drive the support seat 71, the scraper 72, the support spring 73 and the pressing frame 74 to make a circular motion around the center of the intake pipe 2. When the support pipe 56 rotates, it will drive the pressing frame 74 to rotate. 2 and the supporting spring 73 will not rotate. When the pressing frame 74 rotates, it will contact the scraper 72. The pressing frame 74 squeezes the scraper 72 to move towards the inner wall of the intake pipe 2. At the same time, the scraper 72 will make a circular motion around the center of the intake pipe 2. The pressing frame 74 continues to rotate and will lose contact with the scraper 72. The support spring 73 resets and drives the scraper 72 to reset. When the scraper 72 resets, the dust attached to the surface of the scraper 72 will be bounced off, thereby cleaning the surface of the scraper 72. In this way, the dust impurities on the inner wall of the intake pipe 2 can be continuously and further cleaned, so that the intake pipe 2 can better intake air.

[0038] Embodiment 3: Based on embodiment 2, Figure 7 , Fig. 9 , Fig.12 and Fig.13 As shown, a lifting component is also included, which is arranged on the outlet pipe 58. The lifting component includes a support frame 81, a rubber plate 82 and a push rod 83. Several support frames 81 are welded on the outlet pipe 58, and rubber plates 82 are fixedly connected between the several support frames 81. The rubber plates 82 have a certain elasticity. The rubber plates 82 are used to clean dust and impurities on the inner wall of the intake pipe 2. Two push rods 83 are fixedly connected to the scraper 72, and the two push rods 83 are in contact with the bottom of the rubber plate 82.

[0039] At first, the push rod 83 contacts the rubber plate 82, and when the outlet pipe 58 makes a circular motion around the center of the inlet pipe 2, it drives the support frame 81, the rubber plate 82, the support seat 71, the scraper 72, the support spring 73 and the push rod 83 to make a circular motion around the center of the inlet pipe 2. The rubber plate 82 scoops up the dust impurities with a certain thickness at the bottom of the inner wall of the inlet pipe 2, and some of the dust impurities fall on the rubber plate 82. The rubber plate 82 continues to rotate, driving some of the dust impurities to move upward, and then the rubber plate 82 rotates to the upper half of the inlet pipe 2, and some of the dust impurities move downward along the surface of the rubber plate 82. The airflow from the air inlet drives these impurities into the dust collecting bin frame 1, thereby further cleaning the dust impurities on the inner wall of the air inlet pipe 2 and facilitating better air intake of the air inlet pipe 2. When the pressing frame 74 squeezes the scraper plate 72 to move in a direction away from the inner wall of the air inlet pipe 2, the scraper plate 72 drives the push rod 83 to move, and the push rod 83 is separated from the rubber plate 82. When the support spring 73 is reset to drive the scraper plate 72 to reset, the scraper plate 72 drives the push rod 83 to move in the opposite direction and reset. The push rod 83 contacts the rubber plate 82 again and moves the rubber plate 82, thereby promoting the falling of dust on the surface of the rubber plate 82.

[0040] Embodiment 4: Based on embodiment 3, Figure 7 and Fig.13 As shown, it also includes a guide frame 91 and an air outlet head 92. The guide frame 91 is welded to one end of the air outlet pipe 58 away from the support pipe 56. The guide frame 91 is connected to the air outlet pipe 58. The guide frame 91 is located inside the other end of the air inlet pipe 2. The guide frame 91 is fixedly connected to a plurality of air outlet heads 92. Each air outlet head 92 is connected to the guide frame 91. The air outlet heads 92 are used to blow gas obliquely into the air inlet pipe 2.

[0041] A separation ring 10 is also included. One end of the air intake pipe 2 close to the guide frame 91 is fixedly connected with the separation ring 10. The separation ring 10 is used to block part of the external air.

[0042] The air pump 3 draws air from the outside, so that the gas is transported to the support tube 56 through the hose 57. The support tube 56 transports part of the gas to the guide frame 91, and then blows it into the air inlet pipe 2 through the air outlet head 92. Several air outlet heads 92 blow gas obliquely into the air inlet pipe 2. When the dust collecting bin frame 1 stops taking in air, the gas blown out by the air outlet head 92 will drive the dust in the air inlet pipe 2 to move into the dust collecting bin frame 1, thereby effectively reducing the dust in the air inlet pipe 2 returning to the outside.

[0043] The separation ring 10 is used to block part of the outside air so that the outside air can only enter through the middle of the separation ring 10, so that the dust in the outside air is not easy to contact with the guide frame 91, the air outlet head 92, the support tube 56, the scraper 72 and the rubber plate 82, thereby reducing the dust adhesion on the surface of the guide frame 91, the air outlet head 92, the support tube 56, the scraper 72 and the rubber plate 82, thereby facilitating the air intake pipe 2 to better intake air.

[0044] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A dust removal device for the air inlet of a dust collecting bin that effectively prevents dust from returning, characterized in that: The dust collecting bin frame (1) comprises a dust collecting bin frame (1), an air inlet pipe (2), an air pump (3), a driving motor (4), a purge assembly and an adjustable air outlet assembly. An air inlet pipe (2) is fixedly connected to one side of the upper part of the dust collecting bin frame (1). The air inlet pipe (2) is communicated with the dust collecting bin frame (1). An air pump (3) and a driving motor (4) are fixedly connected to one side of the upper part of the dust collecting bin frame (1) close to the air inlet pipe (2). The air pump (3) and the driving motor (4) are respectively located on both sides of the air inlet pipe (2). A purge assembly is provided on the air inlet pipe (2). The purge assembly is used to clean dust on the inner wall of the air inlet pipe (2). An adjustable air outlet assembly is provided on the purge assembly. The adjustable air outlet assembly enables the purge assembly to more thoroughly and more comprehensively remove dust on the inner wall of the air inlet pipe (2). The purge assembly comprises a large pulley (51), a small pulley (52), a flat belt (53), a support ring (54), a guide ring (55), a support pipe (56), a hose (57), an air outlet pipe (58) and a connecting block (59); one end of the air inlet pipe (2) is fixedly connected to the large pulley (51); the large pulley (51) is located in the dust collecting bin frame (1); a small pulley (52) is fixedly connected to the output shaft of the driving motor (4); a flat belt (53) is wound between the small pulley (52) and the large pulley (51); a support ring (54) is fixedly connected to the large pulley (51); two arrows are provided on the side of the support ring (54) away from the air inlet pipe (2); the arrows are in the direction of the small pulley (52); and the large pulley (51) is fixedly connected to the support ring (54). The direction is the rotation direction of the support ring (54); a guide ring (55) is fixedly connected to the support ring (54); the guide ring (55) is located inside one end of the air inlet pipe (2); a support pipe (56) is rotatably connected to the support ring (54); one end of the support pipe (56) is rotatably connected to a hose (57); one end of the support pipe (56) away from the hose (57) is rotatably connected to an air outlet pipe (58); one end of the support pipe (56) is connected to the hose (57); the other end of the support pipe (56) is connected to the air outlet pipe (58); a connection block (59) is fixedly connected between the air outlet pipe (58) and the support ring (54); the connection block (59) is located inside one end of the air inlet pipe (2); The air outlet regulating assembly comprises a barrier tube (61), a rotating disk (62) and a toggle block (63); the barrier tube (61) is fixedly connected to one end of the support tube (56) away from the hose (57); the air outlet pipe (58) is rotatably connected to the barrier tube (61); a threaded through groove is formed on the barrier tube (61); a long air outlet is formed on the air outlet pipe (58); the threaded through groove on the barrier tube (61) is communicated with the long air outlet on the air outlet pipe (58); the support tube (56) is fixedly connected to the rotating disk (62); a toggle block (63) is fixedly connected to one side of the upper part of the dust collecting bin frame (1) close to the air pump (3); the toggle block (63) is used to toggle the rotating disk (62); The invention also includes a scraping assembly, which is arranged on the air outlet pipe (58). The scraping assembly includes a support seat (71), a scraper (72), a support spring (73) and a pressing frame (74). A plurality of support seats (71) are fixedly connected to the outer wall of the air outlet pipe (58). The scrapers (72) are slidably connected between the plurality of support seats (71). A support spring (73) is connected between the scraper (72) and each support seat (71). A pressing frame (74) is fixedly connected to the support pipe (56). The pressing frame (74) is used to press the scraper (72).

2. A dust removal device for the air inlet of a dust collecting bin that effectively prevents dust return according to claim 1, characterized in that: The invention also includes a lifting assembly, which is arranged on the air outlet pipe (58). The lifting assembly includes a support frame (81), a rubber plate (82) and a push rod (83). The air outlet pipe (58) is fixedly connected to a plurality of support frames (81), and the rubber plates (82) are fixedly connected between the plurality of support frames (81). The scraper (72) is fixedly connected to two push rods (83), and the two push rods (83) are in contact with the bottom of the rubber plate (82).

3. A dust removal device for dust collection bin air inlet that effectively prevents dust return according to claim 2, characterized in that: It also includes a guide frame (91) and an air outlet head (92); one end of the air outlet pipe (58) away from the support pipe (56) is fixedly connected to the guide frame (91); the guide frame (91) is in communication with the air outlet pipe (58); the guide frame (91) is located inside the other end of the air inlet pipe (2); a plurality of air outlet heads (92) are fixedly connected to the guide frame (91); each air outlet head (92) is in communication with the guide frame (91).

4. A dust removal device for dust collection bin air inlet that effectively prevents dust return according to claim 3, characterized in that: It also includes a separation ring (10), and one end of the air intake pipe (2) close to the guide frame (91) is fixedly connected to the separation ring (10).

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