Self-cleaning ventilation filtering device

Abstract

The invention discloses a self-cleaning ventilating and filtering device, which relates to the technical field of ventilating and filtering, and comprises a main body shell as a basic structure of the device; and the mounting door plate is mounted in a through hole formed in the main body shell through a hinge and is used for mounting a fan. By arranging the multiple filter assemblies, the composite dust removal effect of'dust scraping and vibration stripping 'is achieved, attached dust is directly scraped through the high-wear-resistance elastic scraping pieces attached to the vibration filter disc, vibration of the vibration filter disc is achieved in cooperation with the convex strips of the vibration filter disc, dust on the vibration filter disc is cleaned up, and the dust removal effect is good. According to the air purifier, the filtering efficiency is improved, the structural stability is enhanced, the fan auxiliary supporting function, the fan dust cleaning function and the auxiliary cooling function are achieved, the service life is prolonged, the multiple filtering assemblies are matched with the dust collecting box, the use convenience is greatly improved, by arranging the caliber adjusting assembly, flexible adjustment of the air suction caliber is achieved, and the requirements of different ventilation scenes are met; the device adaptability is improved; and the energy waste is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ventilation filtration, in particular to a self-cleaning ventilation filtration device. BACKGROUND

[0002] In the technical field of ventilation filtration, the existing ventilation filtration devices generally face problems such as easy dust accumulation and blockage of filter elements, cumbersome cleaning and maintenance, and rapid attenuation of filtration efficiency during long-term use. Traditional filtration devices mostly use single filtration structures. When dust, particulate matter and other impurities in the air adhere to the surface of the filter elements, not only will it cause the air flow resistance to increase, affecting the ventilation efficiency, but also frequent shutdown for manual cleaning or replacement of filter cartridges is required, which not only increases the maintenance cost, but also may affect normal ventilation operation due to shutdown.

[0003] In addition, some filtration devices with self-cleaning function often have defects such as complex design, poor vibration effect or incomplete dust removal in their cleaning structure. For example, the traditional vibration dust removal structure may cause the dust on the filter elements to be unable to effectively fall off due to insufficient vibration amplitude or uneven distribution; and some dust removal methods relying on air flow back blowing may cause high energy consumption and unsatisfactory results due to unreasonable air flow organization. At the same time, the air suction diameter of the existing devices is mostly fixedly arranged, and it is difficult to flexibly adjust according to the actual ventilation demand, and the adaptability is poor when facing different ventilation scenes.

[0004] Therefore, the present application provides a self-cleaning ventilation filtration device to solve the above problems. SUMMARY

[0005] The present application aims to provide a self-cleaning ventilation filtration device to solve the problems of difficult cleaning, low efficiency and insufficient adaptability of the filtration device.

[0006] The present application solves the above technical problems by the following technical solutions. The present application comprises a main body shell as the basic structure of the device; a mounting door plate is installed in a through hole of the main body shell by a hinge for mounting a fan; a caliber adjusting assembly is installed at one end of the main body shell and away from the side of the mounting door plate for extending the main body port and changing the air suction caliber; a multiple filtration assembly is installed in the main body shell and connected with the fan, comprising a self-cleaning filtration unit and an auxiliary supporting and dust removal unit; wherein the self-cleaning filtration assembly comprises a plurality of filtration units connected by a T-shaped central shaft, a spring is arranged between adjacent filtration units, and a vibration dust removal structure is arranged on the plurality of filtration units.

[0007] Preferably, the filtering unit comprises: a plurality of clamping frames clamped in the clamping grooves formed on the inner wall of the main body shell; an elastic support installed in the clamping frame for limiting and buffering the vibration core; and a vibration core on which a material conveying core and a plurality of convex strips arranged in a circumferential array are fixedly connected.

[0008] Preferably, the elastic support comprises two groups of wavy elastic plates arranged in a circumferential array, the outer ends of which are fixedly connected to the inner wall of the clamping frame, a plurality of U-shaped elastic sheets are fixedly connected between the two groups of wavy elastic plates, the U-shaped elastic sheets are fixedly connected to the inner wall of the clamping frame, and the plurality of U-shaped elastic sheets are collectively fixedly connected to a center connecting ring, the center connecting ring is connected to the vibration core; the clamping frame is made of rubber material; the vibration core comprises a horn-shaped base fixedly connected to the inner end of the center connecting ring, a concave-convex-shaped vibration filter disc rotatably connected in the horn-shaped base, and the vibration filter disc is fixedly connected to the convex strip; the pore size of the filter hole decreases in a gradient distribution along the airflow direction, i.e., from the side close to the caliber adjusting assembly to the plurality of vibration filter discs.

[0009] The shaft sleeves are fixedly connected to the center of the vibration filter disc through the through holes, the plurality of shaft sleeves are sleeved on a T-shaped central shaft, one end of the T-shaped central shaft is fixedly connected to the impeller of the fan, and the T-shaped central shaft is provided with symmetrical limiting strips, the limiting strips are clamped in the limiting grooves formed on the shaft sleeves; the two ends of the spring are fixedly connected to the adjacent shaft sleeves; the material conveying core comprises a pair of arc-shaped material conveying plates symmetrically arranged, the arc-shaped material conveying plates are fixedly connected to the concave surface of the horn-shaped base, and a curved U-shaped material conveying groove is fixedly connected between the pair of arc-shaped material conveying plates, the U-shaped material conveying groove is inserted into the guide hole formed on the main body shell.

[0010] Preferably, the vibration ash removal structure comprises: a high-wear-resistance elastic scraping piece fitted to the concave surface of the vibration filter disc; a connecting branch fixedly connected to the lower end of the high-wear-resistance elastic scraping piece; a connecting main arm, to which the plurality of connecting branches are collectively fixedly connected, the connecting main arm penetrates the U-shaped material conveying groove and the horn-shaped base; a U-shaped frame fixedly connected to the other end of the connecting main arm, which is fixedly connected to the main body shell through a disc; and a wind collecting cover fixedly connected to the top of the U-shaped frame, a plurality of wind guide components fitted to the driving motor of the fan are fixedly connected in the wind collecting cover.

[0011] Preferably, the wind guide component comprises a wind collecting horn and a through pipe: the wind collecting horn is close to the impeller of the fan for collecting airflow; and the through pipe is fitted to the driving motor of the fan, and a plurality of blowing holes are formed on the through pipe for blowing ash removal airflow to the filtering assembly.

[0012] Preferably, the caliber adjusting assembly comprises: a corrugated connecting base fixedly connected to one end of the main body shell; an elastic corrugated pipe fixedly connected to the other end of the corrugated connecting base; and a caliber adjusting ring sleeved on the elastic corrugated pipe and used for adjusting the caliber of the pipeline.

[0013] Preferably, the caliber adjusting ring comprises: a plurality of arc sleeves in a circumferential array and fixedly connected to the elastic corrugated pipe; an arc adjusting rod inserted between adjacent arc sleeves; and an elastic sleeve ring fixedly connected to both end ports of the arc sleeve and sleeved on the arc adjusting rod.

[0014] Preferably, the elastic corrugated pipe is in a wave shape and is made of an elastic material.

[0015] Preferably, a dust collection box is arranged for storing cleaned dust, the dust collection box is in communication with the inside of the main body shell through the guide hole, and the material conveying core member guides the dust into the dust collection box through the guide hole; long strip plates are respectively arranged on the two sides of the dust collection box and fixedly connected to the outer wall of the main body shell, a clamping groove is arranged in the inner wall of the long strip plate, a clamping strip is clamped in the clamping groove, and the clamping strip is fixedly connected to the outer side wall of the dust collection box; a plurality of reinforcing ribs are fixedly connected to the outer side wall of the dust collection box, and the plurality of reinforcing ribs are uniformly distributed along the length and height directions of the dust collection box and used for enhancing the structural strength of the dust collection box.

[0016] Compared with the prior art, the present application has the following beneficial effects: the multiple filtering assemblies are arranged to realize the combined dust cleaning effect of "scraping dust + vibration stripping", the high-wear-resistant elastic scraper attached to the vibration filter disc is used to directly scrape off the attached dust, and the convex strips of the vibration filter disc are used to realize the vibration of the vibration filter disc, so that the dust on the vibration filter disc is cleaned, the dust accumulation is avoided to block the filter element, the frequency of manual maintenance is reduced, the filtering efficiency is improved, the structural stability is enhanced, the assembly also bears the auxiliary support function of the fan, the dust cleaning of the fan, the auxiliary cooling prolongs the service life, and the multiple filtering assemblies are matched with the dust collection box to greatly improve the use convenience.

[0017] The caliber adjusting assembly is arranged to realize the flexible adjustment of the caliber of the air suction, adapt to different ventilation scene requirements, reduce the caliber and the load of the fan in the low air volume scene, expand the caliber to guarantee the air flow in the high air volume environment, improve the adaptability of the device and reduce the waste of energy consumption.

[0018] Through the synergistic effect of the multiple filtering assemblies and the caliber adjusting assembly, the comprehensive performance optimization of the device in efficient filtering, self-cleaning maintenance and scene adaptability is realized, the problems of the traditional filtering device such as difficult cleaning, low efficiency and insufficient adaptability are effectively solved, and the overall operation cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic view of the stereoscopic structure of the present application; Figure 2 is a schematic view of the stereoscopic structure of the present application; Figure 1 is a schematic view of the stereoscopic structure of the present application; Figure 3 is a schematic view of the stereoscopic structure of the present application; Figure 1 is a schematic view of the stereoscopic structure of the present application; Figure 4 is a schematic view of the stereoscopic structure of the present application; Figure 1 is a schematic view of the stereoscopic structure of the present application; Figure 5 is a schematic view of the stereoscopic structure of the present application; Figure 1 is a schematic view of the stereoscopic structure of the present application; Figure 6 is a schematic view of the stereoscopic structure of the present application; Figure 5 is a schematic view of the stereoscopic structure of the present application; Figure 7 is a schematic view of the stereoscopic structure of the present application; Figure 5 is a schematic view of the stereoscopic structure of the present application; Figure 8 is a schematic view of the stereoscopic structure of the present application; Figure 9 is a schematic view of the stereoscopic structure of the present application; Figure 10 is a schematic view of the stereoscopic structure of the present application; Figure 11 is a schematic view of the stereoscopic structure of the present application; Figure 10 is a schematic view of the stereoscopic structure of the present application; Figure 12 is a schematic view of the stereoscopic structure of the present application; Figure 8 is a schematic view of the stereoscopic structure of the present application.

[0020] The numbers in the figure represent: 1, main body shell; 2, installation door plate; 3, handle; 4, dust screen plate; 5, caliber adjusting assembly; 51, corrugated connecting base; 52, elastic corrugated pipe; 53, caliber adjusting ring; 531, arc sleeve; 532, arc adjusting rod; 533, elastic sleeve ring; 6, dust collection box; 7, fan; 8, multiple filtering assembly; 81, guide hole; 82, filtering unit; 820, clamping groove; 821, clamping frame; 822, elastic support; 8221, center connecting ring; 8222, U-shaped elastic sheet; 8223, wavy elastic plate; 824, vibration core piece; 825, horn base; 826, vibration dust cleaning structure; 827, convex strip; 828, material conveying core piece; 8281, arc material conveying plate; 8282, U-shaped material conveying groove; 829, shaft sleeve; 83, T-shaped center shaft; 84, vibration dust cleaning structure; 841, high wear-resistant elastic scraping sheet; 842, connecting branch arm; 843, connecting main arm; 844, U-shaped frame; 845, wind gathering cover; 846, air guiding component; 85, spring. DETAILED DESCRIPTION

[0021] The above-mentioned and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

[0022] This embodiment provides a technical solution: a self-cleaning ventilation and filter device, such as... Figures 1-12 As shown, it includes: a main body shell 1, which serves as the basic structure of the device; a mounting door panel 2, which is hinged and installed in a through hole in the main body shell 1 for mounting a fan 7. The main body shell 1 and the mounting door panel 2 are combined to provide a mounting base for the device, facilitate the disassembly and maintenance of the fan 7, and ensure the overall structural stability; a handle 3, which is used by the operator to hold the device and is fixedly connected to the top of the mounting door panel 2; a dust baffle 4, which is used to shield the fan 7 and is installed at the end of 1 away from 5; and a diameter adjustment component 5, which is installed at one end of the main body shell 1 and on the side away from the mounting door panel 2, for extending the main body port and changing the air intake diameter.

[0023] like Figure 5 , Figures 7 to 12 As shown, the multi-filter assembly 8 is installed inside the main housing 1 and connected to the blower 7, including a self-cleaning filter unit and an auxiliary support and soot blowing unit; wherein, the self-cleaning filter assembly includes multiple filter units 82, which are connected by a T-shaped central shaft 83, and springs 85 are sleeved between adjacent filter units 82. The multiple filter units 82 are provided with a vibration cleaning structure 84. The filter unit 82 includes: multiple snap-fit ​​frames 821, which are snap-fitted into the slots 820 opened in the inner wall of the main housing 1; elastic support members 822, which are installed in the snap-fit ​​frames 821 and are used to limit the vibration core member 824 and provide vibration buffer; the vibration core member 824 is fixedly connected to a material conveying core member 828 and multiple convex strips 827 distributed in a circumferential array.

[0024] The elastic support 822 includes two sets of wavy elastic plates 8223 arranged in a circumferential array. The outer ends of the plates are fixedly connected to the inner wall of the snap-fit ​​frame 821. Multiple U-shaped elastic sheets 8222 are fixedly connected between the two sets of wavy elastic plates 8223. The U-shaped elastic sheets 8222 are fixedly connected to the inner wall of the snap-fit ​​frame 821, and the multiple U-shaped elastic sheets 8222 are jointly fixedly connected to a central connecting ring 8221. The central connecting ring 8221 is connected to the vibration core 824. The snap-fit ​​frame 821 is made of rubber. The vibration core 824 includes a trumpet-shaped base 825 fixedly connected to the inner end of the central connecting ring 8221. A concave-convex vibrating filter disc 826 is rotatably connected inside the trumpet-shaped base 825. The vibrating filter disc 826 is fixedly connected to a convex strip 827. The aperture of the filter holes decreases gradually along the airflow direction, i.e., from the side near the aperture adjustment component 5, among the multiple vibrating filter discs 826.

[0025] A plurality of shaft sleeves 829 are sleeved on the T-shaped central shaft 83, one end of the T-shaped central shaft 83 is fixedly connected with the impeller of the fan 7, and symmetrically arranged limiting strips are arranged on the T-shaped central shaft 83, the limiting strips are clamped in the limiting grooves of the shaft sleeves 829; the two ends of the spring 85 are fixedly connected with adjacent shaft sleeves 829 respectively; the material conveying core 828 comprises a pair of arc-shaped material conveying plates 8281 which are symmetrically arranged, are fixedly connected with the concave surface of the horn-shaped base 825, and a curved U-shaped material conveying groove 8282 is fixedly connected between the pair of arc-shaped material conveying plates 8281, the U-shaped material conveying groove 8282 is inserted into the guide hole 81 of the main body shell 1.

[0026] The vibration ash removal structure 84 comprises: a high-wear-resistance elastic scraping sheet 841 which is attached to the concave surface of the vibration filter disc 826; A connecting branch arm 842 is fixedly connected to the lower end of the high-wear-resistance elastic scraping sheet 841; a connecting main arm 843 is fixedly connected with a plurality of connecting branch arms 842, and the connecting main arm 843 penetrates through the U-shaped material conveying groove 8282 and the horn-shaped base 825; a U-shaped frame 844 is fixedly connected to the other end of the connecting main arm 843, and the U-shaped frame 844 is fixedly connected with the main body shell 1 through a disc; a wind collecting cover 845 is fixedly connected to the top of the U-shaped frame 844, a plurality of air guide components 846 which are attached to the driving motor of the fan 7 are fixedly connected in the wind collecting cover 845, the air guide components 846 are composed of a wind collecting horn and a through pipe, the wind collecting horn is close to the impeller of the fan 7 and is used for collecting airflow, and the through pipe is attached to the driving motor of the fan 7 and a plurality of air blowing holes are arranged in the through pipe and are used for blowing ash removal airflow to the filter assembly.

[0027] By arranging the multiple filter assemblies 8, the following technical effects are achieved: The composite ash removal mechanism: the high-wear-resistance elastic scraping sheet 841 is attached to the vibration filter disc 826 to scrape off dust, and the convex strips 827 drive the vibration filter disc 826 to vibrate, so that the “scraping + vibration stripping” dual ash removal is realized, and the filter element is prevented from being blocked.

[0028] The gradient filtration design: the filter hole diameters of the vibration filter disc 826 are gradiently decreased along the airflow direction, the filtration efficiency is improved, and different particle size impurities are intercepted layer by layer.

[0029] The auxiliary supporting function: the T-shaped central shaft 83 is connected with the impeller in the fan 7, the spring 85 and the elastic supporting member 822 provide buffering and enhance the structural stability, and simultaneously bear the auxiliary supporting effect of the fan.

[0030] I. The details effects of the filter unit 82 in the multiple filter assemblies 8 are as follows: ①, through the high wear-resistant elastic wiper 841 and convex strip 827 drive vibration filter disc 826 vibration, wave-shaped elastic plate 8223 and U-shaped elastic sheet 8222 provide vibration uniformity, ensure that the dust in the process of uniform vibration, avoid local adsorption of dust can not be cleaned.

[0031] ②, the kinetic energy of the fan rotation to the top, wave-shaped elastic plate 8223 and U-shaped elastic sheet 8222 provide vibration buffer, ensure the vibration of the vibration filter disc 826 is uniform, avoid its local stress and damage, further improve the dust removal effect.

[0032] ③, the vibration core 824 arc-shaped material plate 8281 + U-shaped material groove 8282 will be dust after dust removal through the guide hole 81 into the dust collection box 6, facilitate centralized cleaning, improve the use of convenience.

[0033] II, the details of the vibration dust removal structure 84 in the multiple filter assembly 8 are as follows: ①, the wiper dust removal; high wear-resistant elastic wiper 841 directly contact with vibration filter disc 826, scraping the attached dust, ensure the cleanliness of the filter surface.

[0034] ②, airflow auxiliary dust removal; use the airflow of the fan 7 to blow the dust removal airflow to the filter assembly, cooperate with the vibration to further improve the dust removal efficiency, at the same time, use the airflow of the fan 7 to blow the dust removal airflow to the air guide assembly 846, make the gathered airflow cool, clean and assist the support of the driving motor in the fan 7, prolong its service life.

[0035] As shown in Figure 5 and Figure 6 , the caliber adjusting assembly 5 includes: a corrugated connection base 51 fixedly connected to one end of the main body shell 1; an elastic corrugated pipe 52 fixedly connected to the other end of the corrugated connection base 51; a caliber adjusting ring 53 sleeved on the elastic corrugated pipe 52, used for adjusting the caliber of the pipeline, the caliber adjusting ring 53 includes: a plurality of arc sleeves 531 distributed in a circumferential array, fixedly connected with the elastic corrugated pipe 52; an arc adjusting rod 532 inserted between adjacent arc sleeves 531; and an elastic sleeve ring 533 fixedly connected in two end ports of the arc sleeve 531 and sleeved on the arc adjusting rod 532, the elastic corrugated pipe 52 is arranged in a wave shape and made of an elastic material.

[0036] By setting the caliber adjusting assembly 5, the air suction caliber is flexibly adjusted, the extension state of the elastic corrugated pipe 52 can be changed by adjusting the caliber adjusting ring 53, the air suction caliber is flexibly adjusted, such as reducing the caliber to reduce the load of the fan, expanding the caliber to increase the air flow, adapting to different ventilation scenes, low or high wind environment, improving the adaptability of the device and reducing energy waste.

[0037] Through the cooperation of the multiple filtering assembly 8 and the caliber adjusting assembly 5, the comprehensive performance optimization of the device in efficient filtering, self-cleaning maintenance and scene adaptability is realized, effectively solving the problems of traditional filtering device cleaning difficulty, low efficiency and insufficient adaptability, reducing the overall operation cost.

[0038] As shown in Figures 1 to 5 The dust collecting box 6 is used for storing the cleaned dust, and is communicated with the inside of the main body shell 1 through the guide hole 81. The dust is guided into the dust collecting box 6 through the guide hole 81 by the feeding core 828. The two sides of the dust collecting box 6 are respectively provided with a long strip plate fixedly connected to the outer wall of the main body shell 1. The inner wall of the long strip plate is provided with a clamping groove, and a clamping strip is clamped in the clamping groove. The clamping strip is fixedly connected to the outer side wall of the dust collecting box 6. A plurality of reinforcing ribs are fixedly connected to the outer side wall of the dust collecting box 6. The plurality of reinforcing ribs are uniformly distributed along the length and height directions of the dust collecting box 6, and are used for enhancing the structural strength of the dust collecting box 6.

[0039] Through the setting of the dust collecting box 6, the cleaned dust is stored, which is convenient for disassembly and cleaning. The reinforcing ribs enhance the structural strength and prevent deformation caused by dust accumulation.

[0040] The above is only the preferred embodiment of the present application, which is only illustrative but not limiting. The skilled person understands that many changes, modifications and even equivalents can be made to the present application within the spirit and scope defined by the claims of the present application, but all will fall within the protection scope of the present application.

Claims

1. A self-cleaning ventilation filter device, characterized in that The utility model relates to a kind of air purifier, including: Main body shell (1), as the basic structure of device; Mounting door plate (2) is installed in the through hole of the main body shell (1) opened by hinge, for installing fan (7); Caliber adjustment assembly (5) is installed in one end of the main body shell (1), and away from the side of mounting door plate (2), for extending main body port and changing air suction caliber; Multiple filtering assembly (8) is installed in the main body shell (1) and is connected with fan (7), including self-cleaning filter unit and auxiliary support blowing unit;Wherein, the self-cleaning filter assembly includes a plurality of filter units (82), connected by T-shaped central shaft (83), spring (85) is sleeved between adjacent filter units (82), and vibration dust removal structure (84) is commonly provided on a plurality of filter units (82).

2. The self-cleaning vent filter of claim 1, wherein, The filter unit (82) includes: A plurality of clamping frames (821) are respectively clamped in the clamping groove (820) opened in the inner wall of the main body shell (1); Elastic support (822) is installed in the clamping frame (821), for limiting vibration core part (824) and providing vibration buffer; Vibration core part (824) is fixedly connected with material conveying core part (828) and a plurality of convex strips (827) distributed in circumferential array on it.

3. The self-cleaning vent filter device of claim 2, wherein, The elastic support (822) includes two groups of wave-shaped elastic plates (8223) distributed in circumferential array, the outer end of which is fixedly connected with the inner wall of the clamping frame (821), a plurality of U-shaped elastic sheets (8222) are fixedly connected between the two groups of wave-shaped elastic plates (8223), the U-shaped elastic sheet (8222) is fixedly connected with the inner wall of the clamping frame (821), and the plurality of U-shaped elastic sheets (8222) are commonly fixedly connected with the center connecting ring (8221), and the center connecting ring (8221) is connected with the vibration core part (824); The clamping frame (821) is made of rubber material; The vibration core part (824) includes a horn-shaped base (825) fixedly connected to the inner end of the center connecting ring (8221), a vibration filter disc (826) with concave-convex shape is rotatably connected in the horn-shaped base (825), and the vibration filter disc (826) is fixedly connected with the convex strip (827); The caliber of filter hole is distributed in gradient decreasing distribution between a plurality of vibration filter discs (826) along the airflow direction, i.e. from the side close to caliber adjustment assembly (5); The center of the vibration filter disc (826) is fixedly connected with a shaft sleeve (829) through a through hole, a plurality of shaft sleeves (829) are sleeved on the T-shaped central shaft (83), one end of the T-shaped central shaft (83) is fixedly connected with the impeller of fan (7), and the T-shaped central shaft (83) is provided with symmetrical limiting strips, the limiting strip is clamped in the limiting groove opened in the shaft sleeve (829); The two ends of the spring (85) are fixedly connected with adjacent shaft sleeves (829) respectively. The material conveying core (828) comprises a pair of arc-shaped material conveying plates (8281) symmetrically arranged, a concave surface fixedly connected to the horn-shaped base (825), and a curved U-shaped material conveying groove (8282) fixedly connected between the pair of arc-shaped material conveying plates (8281), the U-shaped material conveying groove (8282) being inserted into the guide hole (81) of the main body shell (1).

4. The self-cleaning vent filter of claim 3, wherein, The vibration ash removal structure (84) comprises: a high-wear-resistance elastic scraping blade (841) attached to the concave surface of the vibration filter disc (826); a connecting branch arm (842) fixedly connected to the lower end of the high-wear-resistance elastic scraping blade (841); a connecting main arm (843) to which the plurality of connecting branch arms (842) are fixedly connected, the connecting main arm (843) penetrating the U-shaped material conveying groove (8282) and the horn-shaped base (825); a U-shaped bracket (844) fixedly connected to the other end of the connecting main arm (843), the U-shaped bracket (844) being fixedly connected to the main body shell (1) through a disc; a wind collecting cover (845) fixedly connected to the top of the U-shaped bracket (844), the wind collecting cover (845) being fixedly connected with a plurality of air guide components (846) attached to the driving motor of the air blower (7).

5. The self-cleaning vent filter device of claim 4, wherein, The air guide component (846) is composed of a wind collecting horn and a through pipe: the wind collecting horn is close to the impeller of the air blower (7) and is used for collecting air flow; the through pipe is attached to the driving motor of the air blower (7) and is provided with a plurality of air blowing holes for blowing ash removal air flow to the filter assembly.

6. The self-cleaning vent filter device of claim 1, wherein, The caliber adjusting assembly (5) comprises: a corrugated connecting base (51) fixedly connected to one end of the main body shell (1); an elastic corrugated pipe (52) fixedly connected to the other end of the corrugated connecting base (51); a caliber adjusting ring (53) sleeved on the elastic corrugated pipe (52) and used for adjusting the caliber of the pipeline.

7. The self-cleaning vent filter of claim 6, wherein, The caliber adjusting ring (53) comprises: a plurality of arc-shaped sleeves (531) circumferentially arranged and fixedly connected to the elastic corrugated pipe (52); an arc-shaped adjusting rod (532) inserted between adjacent arc-shaped sleeves (531); and an elastic sleeve ring (533) fixedly connected to the two end ports of the arc-shaped sleeve (531) and sleeved on the arc-shaped adjusting rod (532).

8. The self-cleaning vent filter of claim 7, wherein, The elastic corrugated pipe (52) is arranged in a wave shape and is made of an elastic material.

9. The self-cleaning venting filter device of claim 3, wherein, A dust collecting box (6) is used for storing cleaned dust, the dust collecting box (6) is in communication with the inside of the main body shell (1) through the guide hole (81), and the material conveying core (828) guides dust into the dust collecting box (6) through the guide hole (81); long strip plates fixedly connected to the outer wall of the main body shell (1) are arranged on the two sides of the dust collecting box (6), a clamping groove is arranged on the inner wall of the long strip plate, a clamping strip is clamped in the clamping groove, and the clamping strip is fixedly connected to the outer side wall of the dust collecting box (6); a plurality of reinforcing ribs are fixedly connected to the outer side wall of the dust collecting box (6), the plurality of reinforcing ribs are uniformly distributed along the length and height of the dust collecting box (6), and the reinforcing ribs are used for enhancing the structural strength of the dust collecting box (6).

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