Auxiliary dust falling device for municipal construction and using method thereof

Abstract

The invention discloses an auxiliary dust falling device for municipal construction and a using method thereof, and relates to the technical field of municipal engineering, the auxiliary dust falling device comprises an outer shell, an exhaust driving part is arranged at the top of the outer shell, and a material collecting hopper is fixedly embedded in the side wall of the outer shell; the filtering part is in a hollow cylinder shape and is rotationally installed in an inner cavity of the outer shell, an arc scraping opening is formed in the side, close to the filtering part, of the material collecting hopper, and the material collecting hopper is slidably connected with the outer wall of the filtering part through the arc scraping opening; and the sweeping mechanism is arranged on the inner wall of one side of the outer shell. The hollow cylindrical filtering piece is assembled in the shell, the filtering piece can be driven to rotate while air is exhausted by matching with the air exhaust driving piece, the area for filtering on the filtering piece can be continuously adjusted, the filtering work quality is guaranteed, meanwhile, the arc scraping opening characteristic on the material collecting hopper and the rotation of the filtering piece can be utilized, and the filtering efficiency is improved. And automatic cleaning of the outer wall of the filtering piece is achieved, so that the filtering effect is guaranteed while self-cleaning of the filtering piece is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of municipal engineering, and in particular to an auxiliary dust reduction device for municipal construction and a use method thereof. Background Art

[0002] During the municipal pipe well construction process, due to the influence of earthwork, a lot of dust will be raised in the construction area, polluting the construction environment and affecting the health of construction workers. Therefore, the municipal pipe well construction site currently uses auxiliary equipment to carry out dust removal work.

[0003] In the prior art, conventional auxiliary devices generally adopt two methods, spray dust reduction or air suction dust reduction. Air suction dust reduction is to use a fan or other exhaust equipment in conjunction with a filter to draw the gas mixed with dust into the equipment, filter out the dust impurities in the gas and then discharge it. The dust removal efficiency is high and the effect is obvious. Compared with spray dust reduction, it can prevent dust from adhering to the construction workers with water mist. However, the filter use area in the current air suction dust reduction auxiliary device is fixed. After long-term use, dust and impurities accumulate on the use area of ​​the filter, causing the filter to be blocked, reducing the air permeability of the filter, affecting the filtration efficiency, and requiring cleaning or shutdown for replacement. The dust filtering effect cannot be continuously guaranteed, affecting the quality of use. For this reason, an auxiliary dust reduction device for municipal construction and a method of using the device are proposed. Summary of the invention

[0004] The object of the present invention is to provide an auxiliary dust reduction device for municipal construction and a method of using the same, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an auxiliary dust reduction device for municipal construction, comprising: An outer shell, wherein an exhaust driving member is provided on the top of the outer shell, and a collecting hopper is fixedly embedded on the side wall of the outer shell, and the collecting hopper is in a hollow frustum shape; The filter element is in the shape of a hollow cylinder, and the filter element is rotatably mounted in the inner cavity of the outer shell. The size of the collecting hopper gradually decreases in the direction close to the filter element. A circular scraping mouth is provided on the side of the collecting hopper close to the filter element, and the collecting hopper is slidably connected to the outer wall of the filter element through the circular scraping mouth. A cleaning mechanism is arranged on the inner wall of one side of the outer shell, and is used for cleaning the outer wall of the filter element.

[0006] Preferably, the filter element includes a stainless steel filter screen, the top and bottom ends of the stainless steel filter screen are fixedly connected to metal rings, an upper bearing seat is fixedly connected between the metal ring at the top end of the stainless steel filter screen and the inner wall of the outer shell, and a lower bearing seat is fixedly connected to the inner wall of the metal ring at the bottom end of the stainless steel filter screen.

[0007] Preferably, the outer wall of the metal ring located at the top of the stainless steel filter is fixedly connected to an outer gear ring, a retarder motor is fixedly installed on the top of the inner wall of one side of the outer shell, and the driving end of the retarder motor is fixedly connected to a transmission gear, which is meshingly connected to the outer gear ring.

[0008] Preferably, the cleaning mechanism includes a connecting column, which is symmetrically and fixedly connected to two rotating seats on one side of the connecting column close to the filter element, a special-shaped hook plate is rotatably connected between the two rotating seats, a reset torsion spring is installed between the special-shaped hook plate and the rotating seat, one end of the special-shaped hook plate is fixedly connected to a cleaning brush, and the other end of the special-shaped hook plate is rotatably connected to a cylindrical roller, the outer walls of the two metal rings are fixedly connected to special-shaped rings, the length of the cylindrical roller is greater than the length of the cleaning brush, and the length of the cleaning brush is greater than or equal to the height of the stainless steel filter.

[0009] Preferably, the special-shaped hook plate is in a V-shaped hook shape, the special-shaped ring is an annular body with a notch, and the inner wall on one side of the notch of the special-shaped ring is arc-shaped, and a material receiving assembly is provided on the inner wall of the outer shell and below the filter element.

[0010] Preferably, the connecting column is rotatably connected to a driving rod on one side close to the inner wall of the outer shell, one end of the driving rod extends to the outside of the outer shell and is fixedly connected to a push-pull handle, an elastic tension spring is fixedly connected between the connecting column and the inner wall of the outer shell, and a push-pull handle is fixedly connected to the outer wall of the outer shell and located below the driving rod.

[0011] Preferably, the material receiving assembly includes a material receiving seat, which is located below the filter element and fixed to the inner wall of the shell, the lower bearing seat is fixedly connected to the top of the material receiving seat, an annular material receiving groove is provided on the outer side of the top of the material receiving seat, a push plate is fixedly connected to the bottom of the outer wall of the filter element, the bottom of the push plate is slidably connected to the inner wall of the annular material receiving groove, a material receiving drawer is detachably installed on the bottom of the outer wall of the shell, and a leakage groove connected to the annular material receiving groove is provided at the bottom of the material receiving seat and above the material receiving drawer.

[0012] Preferably, an air outlet for installing an exhaust drive component is opened at the top of the outer shell, a protective net is fixedly connected to the top of the outer shell corresponding to the air outlet, and an inspection door is fixedly installed on the top of the outer wall of the outer shell.

[0013] Preferably, an air inlet is opened on the side wall of the outer shell, the collecting hopper is fixedly connected to the inner side of the air inlet, a protective grille is fixedly connected to the outer wall of the outer shell at a position corresponding to the air inlet, the bottom of the protective grille has an upwardly concave snap-in, and the protective grille is detachably mounted with a collection box through the snap-in.

[0014] On the other hand, the present invention also provides a method for using an auxiliary dust reduction device for municipal construction, comprising the following specific steps: Step 1: The exhaust drive is started, so that the external dust enters the outer shell from the outer shell through the collecting hopper and the filter element. The dust particles in the dust are filtered by the filter element and blocked outside. The airflow enters the filter element and is discharged from the exhaust drive. Most of the filtered dust slides down the slope of the collecting hopper to the arc scraper for storage; In step two, the slow-speed motor is started at the same time, and the transmission action of the transmission gear and the outer gear ring drives the filter element to rotate slowly, so that the area on the filter element used to filter dust is continuously changed, thus avoiding the problem of blockage caused by continuous use of a single filter area of ​​the filter element and affecting the dust filtering effect. At the same time, since the outer wall of the filter element and the circular scraping position of the collecting hopper slide and fit, the filter element will move relative to the circular scraping position of the collecting hopper during the rotation process. The relative movement can be used to make the circular scraping position on the collecting hopper scrape the used area of ​​the filter element, and the dust adhered to the used area of ​​the outer wall of the filter element can be scraped off, so that the filter element can automatically clean the used area while adjusting the use area, thereby ensuring the continuous use quality of the filter element. The third step is to stop the dust cleaning work or reduce the air volume at the air outlet of the outer shell, and stop the exhaust drive member. The driving rod is manually pressed to drive the connecting column to move in the direction of the filter element, so that the cylindrical roller moves to a position where it can fit the outer wall of the filter element. The position of the driving rod is locked by rotating the push-pull handle into the L-shaped block. During the rotation of the filter element, the arc wall at the notch on the special-shaped ring contacts the cylindrical roller, which can drive the special-shaped hook plate to rotate and deform the reset torsion spring. At this time, the other end of the special-shaped hook plate drives the cleaning brush to fit the outer wall of the stainless steel filter screen of the filter element. In this way, during the rotation of the filter element, the cleaning brush can perform secondary cleaning on the stainless steel filter screen, and when the notch position of the special-shaped ring rotates to the position of the cylindrical roller, the cylindrical roller loses its thrust and hits the outer wall of the filter element under the elastic reaction force of the reset torsion spring, thereby knocking the outer wall of the filter element, thereby utilizing the vibration force generated by the knocking action to vibrate the filter element for dust removal. Step 4: The dust that falls off the outer wall of the filter element after the knocking and cleaning action in step 3 will fall into the annular material receiving groove of the material receiving seat. When the filter element rotates, it drives the push plate to move along the track of the annular material receiving groove, pushing the dust in the annular material receiving groove to gather at the leakage groove position, and then falls along the leakage groove to the material receiving drawer below for collection.

[0015] Technical effects and advantages of the present invention: The present invention assembles a hollow cylindrical filter element in the shell, and the filter element can rotate in the outer shell. Not only can the area on the filter element used for filtering be continuously adjusted to ensure the quality of filtering work, but also the arc scraping feature on the hopper and the rotatable filter element can be used to achieve automatic cleaning of the outer wall of the filter element, thereby achieving self-cleaning of the filter element while ensuring the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a schematic diagram of the internal cross-sectional structure of the outer shell of the present invention.

[0018] Figure 3 It is a schematic diagram of the three-dimensional cross-sectional structure of the barrel-shaped filter element of the present invention.

[0019] Figure 4 It is a schematic diagram of a partial cross-sectional view of the cleaning mechanism of the present invention.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the air inlet cover of the present invention.

[0021] Figure 6 It is a schematic diagram of the three-dimensional cross-sectional structure of the annular material receiving plate of the present invention.

[0022] Figure 7 It is a schematic diagram of the top view of the transmission gear in other embodiments of the present invention.

[0023] In the figure: 100, outer shell; 101, air inlet; 102, air outlet; 103, collecting hopper; 104, arc scraper; 105, protective net; 106, inspection door; 107, protective grille; 108, collection box; 200, filter element; 201, metal ring; 202, stainless steel filter; 203, upper bearing seat; 204, lower bearing seat; 300, exhaust drive member; 301, outer gear ring; 302, transmission gear; 303, retarder motor; 400, cleaning mechanism; 401, connecting column; 402, rotating seat; 403, special-shaped bent hook plate; 404, reset torsion spring; 405, cylindrical roller; 406, dust cleaning brush; 407, driving rod; 408, special-shaped ring; 409, material receiving seat; 410, annular material receiving trough; 411, push plate; 412, leakage trough; 413, material receiving drawer; 414, L-shaped block; 415, push-pull handle; 416, elastic tension spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0025] The present invention provides Figure 1-Figure 6 The auxiliary dust suppression device for municipal construction shown in the figure includes an outer shell 100, a filter element 200 and an exhaust drive element 300. The side wall of the outer shell 100 is provided with an air inlet 101, and the top of the outer shell 100 is provided with an air outlet 102. The filter element 200 is hollow cylindrical, and the filter element 200 is rotatably installed in the inner cavity of the outer shell 100. A hopper 103 is fixedly connected to the inner side of the air inlet 101. The size of the hopper 103 gradually decreases along the direction close to the filter element 200. A circular arc scraper 104 is provided on the side of the hopper 103 close to the filter element 200. The hopper 103 is slidably connected to the outer wall of the filter element 200 through the circular arc scraper 104. By setting the filter element 200 to be hollow cylindrical and rotatable, and setting a circular arc matching the outer wall of the filter element 200 on one side of the hopper 103 The arc scraping opening 104 enables the filter element 200 to not only change the area located at the air inlet 101 through a rotation cycle to ensure the filtering effect of the filter element 200 on the dust at the air inlet 101, but also utilizes the relative movement between the filter element 200 and the collecting hopper 103 so that the collecting hopper 103 can scrape the outer wall of the filter element 200 through the arc scraping opening 104 to scrape off the dust particles adhering to the surface of the filter element 200. The exhaust drive element 300 is fixedly installed at the position of the air outlet 102 at the top of the inner cavity of the outer shell 100. The exhaust drive element 300 can guide the external air to enter from the air inlet 101 of the outer shell 100, and the dust particles in the dust are filtered out by the filter element 200 and then discharged from the air outlet 102, so as to achieve the discharge of the purified gas. In addition, a protective net 105 is fixedly connected to the top of the outer shell 100 at a position corresponding to the air outlet 102, an inspection door 106 is fixedly installed on the top of the outer wall of the outer shell 100, and a protective grille 107 is fixedly connected to the outer wall of the outer shell 100 at a position corresponding to the air inlet 101. The protective net 105 and the protective grille 107 can respectively protect the air outlet 102 and the air inlet 101 to increase the overall safety protection. The inspection door 106 can facilitate the staff to inspect the interior of the outer shell 100. The bottom of the protective grille 107 has an upwardly concave bayonet, and the protective grille 107 is detachably installed with a collection box 108 through the bayonet. The port of the hopper 103 is connected to the inside of the collection box 108 through the bayonet. The dust particles filtered by the filter element 200 can slide into the collection box 108 for storage due to gravity and the slope of the hopper 103, so as to facilitate the centralized cleaning of the filtered dust particles.

[0026] In a preferred embodiment, the filter element 200 includes a stainless steel filter screen 202, which is made of a stainless steel wire mesh. The top and bottom of the stainless steel filter screen 202 are fixedly connected with a metal ring 201, and the stainless steel filter screen 202 is connected and positioned to maintain the cylindrical shape of the stainless steel filter screen 202. An upper bearing seat 203 is fixedly connected between the metal ring 201 at the top of the stainless steel filter screen 202 and the inner wall of the outer shell 100, and a lower bearing seat 204 is fixedly connected to the inner wall of the metal ring 201 at the bottom of the stainless steel filter screen 202. The upper bearing seat 203 and the lower bearing seat 204 cooperate to enable the filter element 200 to be stably installed inside the outer shell 100 while being rotatable, and to prevent dust from falling on the surface of the filter element 200. Among them, the outer wall of the metal ring 201 located at the top of the stainless steel filter screen 202 is fixedly connected with an outer gear ring 301, and a retarding motor 303 is fixedly installed on the top of the inner wall of one side of the outer shell 100. The driving end of the retarding motor 303 is fixedly connected with a transmission gear 302, and the transmission gear 302 is meshed with the outer gear ring 301. After the retarding motor 303 is started, the metal ring 201 can be continuously driven to rotate through the outer gear ring 301, so as to achieve the slow rotation drive of the filter element 200, wherein the diameter of the outer gear ring 301 is larger than the diameter of the transmission gear 302 to meet the need of slow rotation of the filter element 200. In other embodiments, the transmission gear can be replaced with an incomplete gear, such as Figure 7 As shown, a plurality of separation grooves are arranged in a circular array at intervals on the transmission gear 302, so that the transmission gear 302 can drive the filter element 200 to rotate intermittently during continuous rotation, so that the filter element 200 can be divided into a plurality of areas, and each area can be stationary for a period of time when it rotates to the position of the hopper 103. Compared with the continuous rotation of the filter element, this can enhance the utilization rate of each filter area on the filter element 200.

[0027] Furthermore, the cleaning mechanism 400 includes a connecting column 401, and two rotating seats 402 are symmetrically fixedly connected to one side of the connecting column 401 close to the filter element 200. A special-shaped hook plate 403 is rotatably connected between the two rotating seats 402. A reset torsion spring 404 is installed between the special-shaped hook plate 403 and the rotating seat 402. A dust cleaning brush 406 is fixedly connected to one end of the special-shaped hook plate 403, and a cylindrical roller 405 is rotatably connected to the other end of the special-shaped hook plate 403. The outer walls of the two metal rings 201 are fixedly connected to The length of the cylindrical roller 405 is greater than the length of the cleaning brush 406, and the length of the cleaning brush 406 is greater than or equal to the height of the stainless steel filter 202; the special-shaped hook plate 403 is in a V-shaped hook shape, the special-shaped ring 408 is a ring body with a gap, and the inner wall of one side of the special-shaped ring 408 at the gap is arc-shaped, and a material receiving component is provided on the inner wall of the outer shell 100 and below the filter element 200; the driving rod 407 is rotatably connected to the side of the connecting column 401 close to the inner wall of the outer shell 100, One end of the driving rod 407 extends to the outside of the outer shell 100 and is fixedly connected to a push-pull handle 415. An elastic tension spring 416 is fixedly connected between the connecting column 401 and the inner wall of the outer shell 100. The outer wall of the outer shell 100 and the position below the driving rod 407 are fixedly connected to the push-pull handle 415. When in use, after the exhaust drive member 300 stops working, it is only necessary to press the driving rod 407 to drive the connecting column 401 to move forward, so that the cylindrical roller 405 at one end of the special-shaped hook plate 403 can be in contact with the outer wall of the filter element 200. When the filter element 200 is in the closed position, the shape feature of the special-shaped ring 408 can be used to make the filter element 200 press against the cylindrical roller 405 when rotating, drive the special-shaped curved hook plate 403 to rotate, and make the cleaning brush 406 contact with the outer wall of the stainless steel filter screen 202, so as to realize the cleaning of dust particles through relative movement between the two, thereby achieving secondary cleaning of the outer wall of the stainless steel filter screen 202 and improving the cleaning effect. The swept dust particles will fall into the material receiving assembly below for collection, which is convenient for centralized cleaning.

[0028] Furthermore, the material receiving assembly includes a material receiving seat 409, which is located below the filter element 200 and fixed to the inner wall of the outer shell 100, the lower bearing seat 204 is fixedly connected to the top of the material receiving seat 409, and an annular material receiving groove 410 is provided on the outer side of the top of the material receiving seat 409. A push plate 411 is fixedly connected to the bottom of the outer wall of the filter element 200, and the bottom of the push plate 411 is slidably connected to the inner wall of the annular material receiving groove 410. A material receiving drawer 413 is detachably installed at the bottom of the outer wall of the outer shell 100, and the bottom of the material receiving seat 409 and located A leakage groove 412 connected to the annular material receiving groove 410 is provided above the material receiving drawer 413. Dust particles falling from the outer wall of the filter element 200 fall into the annular material receiving groove 410 of the material receiving seat 409. At the same time, the filter element 200 drives the push plate 411 to move in the annular material receiving groove 410 when rotating, and pushes the dust particles in the annular material receiving groove 410 into the leakage groove 412 position, so that the dust particles can be concentrated and discharged into the material receiving drawer 413, so as to achieve the purpose of automatic centralized collection, making subsequent cleaning operations more convenient.

[0029] In summary, a method for using an auxiliary dust suppression device for municipal construction includes the following specific steps: Step 1: The exhaust drive 300 is started, so that the external dust enters the outer shell 100 through the collecting hopper 103 and the filter 200 from the outer shell 100, and the dust particles in the dust are blocked outside after being filtered by the filter 200, and the air flow enters the filter 200 and is discharged from the exhaust drive 300, and most of the filtered dust slides down the slope of the collecting hopper 103 to the arc scraper 104 for storage; The second step is to start the slow-speed motor 303 at the same time, and drive the filter element 200 to rotate slowly through the transmission action of the transmission gear 302 and the outer gear ring 301, so that the area on the filter element 200 used for filtering dust is continuously changed, so as to avoid the problem that the single filtering area of ​​the filter element 200 is continuously used and causes blockage and affects the dust filtering effect. At the same time, since the outer wall of the filter element 200 and the arc scraper 104 position of the collecting hopper 103 are slidingly fitted, the filter element 200 will move relative to the arc scraper 104 position of the collecting hopper 103 during the rotation process. The relative movement can be used to make the arc scraper 104 position on the collecting hopper 103 scrape the used area of ​​the filter element 200, and scrape off the dust adhered to the used area of ​​the outer wall of the filter element 200, so that the filter element 200 can automatically clean the used area while adjusting the use area, so as to ensure the continuous use quality of the filter element 200. Step three, when the dust cleaning work stops or the air volume at the air outlet 102 of the outer shell 100 decreases, close the exhaust drive 300, manually press the drive rod 407 to drive the connecting column 401 to move toward the filter element 200, so that the cylindrical roller 405 moves to a position where it can fit with the outer wall of the filter element 200, and the position of the drive rod 407 is locked by rotating the push-pull handle 415 into the L-shaped block 414. During the rotation of the filter element 200, the arc wall at the notch on the special-shaped ring 408 is in contact with the cylindrical roller 405, which can drive the special-shaped hook plate 403 to rotate, and the reset torsion spring 404 is deformed. At this time, the other end of the special-shaped hook plate 403 drives the cleaning brush 406 to be close to the outer wall of the stainless steel filter screen 202 of the filter element 200, so that during the rotation of the filter element 200, the cleaning brush 406 can perform a secondary cleaning on the stainless steel filter screen 202, and when the notch position of the special-shaped ring 408 rotates to the position of the cylindrical roller 405, the cylindrical roller 405 loses its thrust and impacts the outer wall of the filter element 200 under the elastic reaction force of the reset torsion spring 404, making a knocking action on the outer wall of the filter element 200, so that the filter element 200 is vibrated to remove dust by the vibration force generated by the knocking action; In step four, the dust that falls off the outer wall of the filter element 200 after the knocking and cleaning action in step three will fall into the annular material receiving groove 410 of the material receiving seat 409. While the filter element 200 rotates, it drives the push plate 411 to move along the trajectory of the annular material receiving groove 410, pushing the dust in the annular material receiving groove 410 to gather at the position of the leakage groove 412, and then falling along the leakage groove 412 to the material receiving drawer 413 below for collection.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary dust suppression device for municipal construction, It is characterized in that include: An outer shell (100), wherein an exhaust driving member (300) is provided on the top of the outer shell (100), and a material collecting hopper (103) is fixedly embedded in a side wall of the outer shell (100), wherein the material collecting hopper (103) is in the shape of a hollow frustum; A filter element (200), the filter element (200) being in the shape of a hollow cylinder, the filter element (200) being rotatably mounted in the inner cavity of the outer shell (100), the size of the collecting hopper (103) gradually decreasing in a direction approaching the filter element (200), a circular arc scraping opening (104) being provided on a side of the collecting hopper (103) close to the filter element (200), the collecting hopper (103) being slidably connected to the outer wall of the filter element (200) via the circular arc scraping opening (104); A cleaning mechanism (400) is arranged on an inner wall of one side of the outer shell (100), and the cleaning mechanism (400) is used to clean the outer wall of the filter element (200).

2. The auxiliary dust suppression device for municipal construction according to claim 1, It is characterized in that The filter element (200) comprises a stainless steel filter screen (202), the top and bottom ends of the stainless steel filter screen (202) are both fixedly connected to metal rings (201), an upper bearing seat (203) is fixedly connected between the metal ring (201) at the top end of the stainless steel filter screen (202) and the inner wall of the outer shell (100), and a lower bearing seat (204) is fixedly connected to the inner wall of the metal ring (201) at the bottom end of the stainless steel filter screen (202).

3. The auxiliary dust suppression device for municipal construction according to claim 2, It is characterized in that An outer toothed ring (301) is fixedly connected to the outer wall of the metal ring (201) at the top of the stainless steel filter screen (202), a retarder motor (303) is fixedly installed on the top of the inner wall of one side of the outer shell (100), and a transmission gear (302) is fixedly connected to the driving end of the retarder motor (303), and the transmission gear (302) is meshingly connected to the outer toothed ring (301).

4. The auxiliary dust suppression device for municipal construction according to claim 3, It is characterized in that The cleaning mechanism (400) comprises a connecting column (401), wherein two rotating seats (402) are symmetrically fixedly connected to one side of the connecting column (401) close to the filter element (200), a special-shaped hook plate (403) is rotatably connected between the two rotating seats (402), a return torsion spring (404) is installed between the special-shaped hook plate (403) and the rotating seat (402), a dust cleaning brush (406) is fixedly connected to one end of the special-shaped hook plate (403), and a cylindrical roller (405) is rotatably connected to the other end of the special-shaped hook plate (403), and the outer walls of the two metal rings (201) are fixedly connected to special-shaped rings (408), the length of the cylindrical roller (405) is greater than the length of the dust cleaning brush (406), and the length of the dust cleaning brush (406) is greater than or equal to the height of the stainless steel filter screen (202).

5. The auxiliary dust suppression device for municipal construction according to claim 4, It is characterized in that The special-shaped hook plate (403) is in a V-shaped hook shape, the special-shaped ring (408) is a ring-shaped body with a notch, and the inner wall of one side of the notch of the special-shaped ring (408) is in an arc shape, and a material receiving assembly is provided on the inner wall of the outer shell (100) and below the filter element (200).

6. The auxiliary dust suppression device for municipal construction according to claim 5, It is characterized in that The connecting column (401) is rotatably connected to a driving rod (407) on one side close to the inner wall of the outer shell (100); one end of the driving rod (407) extends to the outside of the outer shell (100) and is fixedly connected to a push-pull handle (415); an elastic tension spring (416) is fixedly connected between the connecting column (401) and the inner wall of the outer shell (100); and the push-pull handle (415) is fixedly connected to the outer wall of the outer shell (100) and located below the driving rod (407).

7. The auxiliary dust suppression device for municipal construction according to claim 6, It is characterized in that The material receiving assembly comprises a material receiving seat (409), the material receiving seat (409) being located below the filter element (200) and fixed to the inner wall of the outer shell (100), the lower bearing seat (204) being fixedly connected to the top of the material receiving seat (409), an annular material receiving groove (410) being provided on the outer side of the top of the material receiving seat (409), a push plate (411) being fixedly connected to the bottom of the outer wall of the filter element (200), the bottom of the push plate (411) being slidably connected to the inner wall of the annular material receiving groove (410), a material receiving drawer (413) being detachably mounted on the bottom of the outer wall of the outer shell (100), and a material leakage groove (412) being connected to the annular material receiving groove (410) being provided at the bottom of the material receiving seat (409) and located above the material receiving drawer (413).

8. The auxiliary dust suppression device for municipal construction according to claim 7, It is characterized in that An air outlet (102) for installing an exhaust drive component (300) is provided at the top of the outer shell (100), a protective net (105) is fixedly connected to a position of the top of the outer shell (100) corresponding to the air outlet (102), and an inspection door (106) is fixedly installed at the top of the outer wall of the outer shell (100).

9. The auxiliary dust suppression device for municipal construction according to claim 8, It is characterized in that An air inlet (101) is provided on a side wall of the outer shell (100); the collecting hopper (103) is fixedly connected to a position inside the air inlet (101); a protective grille (107) is fixedly connected to a position of the outer wall of the outer shell (100) corresponding to the air inlet (101); the bottom of the protective grille (107) has a snap-fit ​​that is recessed upwards; and a collecting box (108) is detachably mounted on the protective grille (107) via the snap-fit.

10. A method for using the auxiliary dust suppression device for municipal construction according to claim 9, It is characterized in that The specific steps include: Step 1: The exhaust drive (300) is started, so that the external dust enters the outer shell (100) through the collecting hopper (103) and the filter (200), and the dust particles in the dust are filtered by the filter (200) and blocked outside, and the air flow enters the filter (200) and is discharged from the exhaust drive (300), and most of the filtered dust slides along the slope of the collecting hopper (103) and is stored in the arc scraper (104); Step 2: At the same time, the slow-speed motor (303) is started, and the filter element (200) is driven to rotate slowly through the transmission action of the transmission gear (302) and the outer gear ring (301), so that the area on the filter element (200) used for filtering dust is continuously changed, thereby avoiding the problem of clogging caused by continuous use of a single filtering area of ​​the filter element (200) and affecting the dust filtering effect. At the same time, due to the sliding fit between the outer wall of the filter element (200) and the arc scraper (104) of the hopper (103), the filter element (200) is During the rotation process, the element (200) will move relative to the circular arc scraping opening (104) of the collecting hopper (103). The relative movement can be used to cause the circular arc scraping opening (104) on the collecting hopper (103) to scrape off the used area on the filter element (200), thereby scraping off dust adhering to the used area on the outer wall of the filter element (200), thereby achieving the automatic cleaning of the used area while adjusting the used area of ​​the filter element (200), thereby ensuring the continuous use quality of the filter element (200); Step 3: When the dust cleaning work stops or the air volume at the air outlet (102) of the outer shell (100) decreases, the exhaust drive member (300) stops working, and the drive rod (407) is manually pressed to drive the connecting column (401) to move toward the filter element (200), so that the cylindrical roller (405) moves to a position where it can fit with the outer wall of the filter element (200), and the position of the drive rod (407) is locked by rotating the push-pull handle (415) into the L-shaped block (414). During the rotation of the filter element (200), the arc wall at the notch on the special-shaped ring (408) contacts the cylindrical roller (405), so that the special-shaped hook plate (403) can be driven to rotate, and the reset torsion spring (404) is reset. ) is deformed, and at this time, the other end of the special-shaped hook plate (403) drives the cleaning brush (406) to be close to the outer wall of the stainless steel filter screen (202) of the filter element (200), so that during the rotation of the filter element (200), the cleaning brush (406) can perform a secondary cleaning on the stainless steel filter screen (202), and when the notch position of the special-shaped ring (408) rotates to the position of the cylindrical roller (405), the cylindrical roller (405) loses its thrust effect and impacts the outer wall of the filter element (200) under the elastic reaction force of the reset torsion spring (404), thereby performing a knocking action on the outer wall of the filter element (200), thereby utilizing the vibration force generated by the knocking action to vibrate the filter element (200) for dust removal; In step 4, the dust falling from the outer wall of the filter element (200) after the knocking and cleaning action in step 3 falls into the annular material receiving groove (410) of the material receiving seat (409). When the filter element (200) rotates, the push plate (411) is driven to move along the trajectory of the annular material receiving groove (410), pushing the dust in the annular material receiving groove (410) to gather at the position of the leakage groove (412), and then falling along the leakage groove (412) to the material receiving drawer (413) below for collection.

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