Bag-type dust collector with ash removal structure

Abstract

The utility model relates to a bag-type dust collector with a dust cleaning structure. The bag-type dust collector comprises a body, the filter bag is vertically mounted in the body; an ash removal assembly corresponding to the filter bag is arranged in the body, the ash removal assembly comprises a supporting ring, the supporting ring can be driven by external force to reciprocate along the track of the filter bag, and a through hole is formed in the supporting ring in the thickness direction of the supporting ring; the dust scraping piece is formed by winding at least three groups of scraping plates around the filter bag, each group of scraping plates is outwards provided with an extension arm, and the extension arms are rotationally connected with the supporting ring. The dust scraping piece has the folded state and the unfolded state, when moving to the top, the dust scraping piece can automatically switch the folded state to ensure that the dust scraping piece can scrape a dust layer on the surface of a filter bag when moving downwards, and when moving to the bottom, the dust scraping piece can automatically switch to the unfolded state to ensure that the dust scraping piece does not interfere with the filter bag when moving upwards. Traditional bidirectional dust scraping is changed into unidirectional dust scraping, so that a large amount of dust is prevented from being accumulated on the upper surface of the dust scraping piece.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust removal, in particular to a bag dust collector with a dust cleaning structure. Background Art

[0002] Bag dust collector is a widely used dust treatment equipment. The core is to use fiber filter bags to intercept dust particles with inertia. There is a supporting skeleton inside the filter bag to prevent the filter bag from collapsing. As dust accumulates on the surface of the filter material, the efficiency and resistance of the dust collector increase accordingly. When the pressure difference on both sides of the filter material is large, some fine dust particles attached to the filter material will be squeezed over, reducing the efficiency of the dust collector. The outer surface of the filter bag needs to be dusted regularly.

[0003] For example, the Chinese patent with application number "202321101740.5" and name "A bag dust collector with a pre-cleaning device" removes dust from the surface of the filter bag by using a scraper sleeve that reciprocates up and down along the track of the filter bag.

[0004] However, since the scraper needs to reciprocate along the filter bag track, the scraped dust will accumulate on both surfaces of the scraper, and the dust collecting trough is located below the filter bag, and a large amount of dust will accumulate on the upper surface of the scraper. Utility Model Content

[0005] The utility model aims at solving the problems in the prior art and provides a bag dust collector with a dust cleaning structure. The specific technical solution is as follows:

[0006] The bag dust collector with dust cleaning structure includes:

[0007] ontology;

[0008] A filter bag is vertically installed in the body;

[0009] The body is provided with a dust cleaning component corresponding to the filter bag, and the dust cleaning component comprises:

[0010] A support ring, driven by an external force, can reciprocate along the filter bag track, and a through hole is opened on the support ring along its thickness direction;

[0011] The scraper is composed of at least three groups of scrapers surrounding the filter bag, each group of scrapers has an extension arm extending outward, the extension arm is rotatably connected to the support ring, and the through hole corresponds to the extension arm;

[0012] A fixing ring is arranged below the filter bag, and the upper surface of the fixing ring has a lifting column corresponding to the through hole;

[0013] The scraper is in a retracted state when moving downward and the lower edge of the scraper is inserted into the dust layer to scrape the dust. The scraper is in a retracted state to form a closed ring body that is wide at the top and narrow at the bottom.

[0014] The scraping member is in an open state when rising and the lower edge of the scraper is not in contact with the dust layer. There is a gap between the lower edges of two adjacent groups of scrapers when the scraping member is in the open state.

[0015] As a further technical solution of the utility model, the lifting column can penetrate the through hole to drive the scraper to rotate, so as to switch the scraper from a closed state to an open state;

[0016] The top wall of the main body can abut against the extension arm to drive the scraper to rotate, so as to switch the scraper from an open state to a retracted state.

[0017] As a further technical solution of the utility model, the inner diameter of the support ring changes incrementally from top to bottom to avoid interference between the extension arm and the support ring when the extension arm rotates.

[0018] As a further technical solution of the utility model, the inner diameter of the fixing ring changes in a decreasing manner from top to bottom, and the inner surface of the fixing ring matches the scraper in the open state.

[0019] As a further technical solution of the utility model, the extension arm is connected to the support ring through a damping shaft.

[0020] The beneficial effects of the utility model are as follows:

[0021] (1) In the present application, the scraper has a folded state and an open state. When the scraper moves to the top, it can automatically switch to the folded state to ensure that it can scrape off the dust layer on the surface of the filter bag when it moves downward. When the scraper moves to the bottom, it can automatically switch to the open state to ensure that it does not interfere with the filter bag when it rises, thereby converting the traditional two-way scraping into a one-way scraping, thereby avoiding the accumulation of a large amount of dust on the upper surface of the scraper.

[0022] (2) In the present application, the inner wall of the fixed ring can fit with the outer wall of the scraper in the open state, so that the dust on the outer surface of the scraper can be scraped off and the dust can be prevented from adhering to the outer wall of the scraper due to oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The overall structural schematic diagram of a bag filter with a dust cleaning structure is shown;

[0024] Figure 2 A schematic cross-sectional view of a bag filter with a dust cleaning structure is shown;

[0025] Figure 3 A schematic diagram of the structure of the support ring and the scraper is shown;

[0026] Figure 4 A schematic diagram of the structure of the scraper and the extension arm is shown;

[0027] Figure 5 A schematic cross-sectional view of the support ring is shown;

[0028] Figure 6 A schematic diagram of the structure of the fixing ring is shown;

[0029] Figure 7 A schematic cross-sectional structure diagram of the fixing ring is shown.

[0030] Legend:

[0031] 110, body; 120, filter bag; 130, bidirectional screw rod; 140, lifting frame; 150, support frame; 210, support ring; 211, through hole; 220, scraper; 221, scraper; 222, extension arm; 230, fixing ring; 231, lifting column. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments.

[0033] Bag dust collector is a widely used dust treatment equipment. The core is to use fiber filter bags to intercept dust particles with inertia. There is a supporting skeleton inside the filter bag to prevent the filter bag from collapsing. As dust accumulates on the surface of the filter material, the efficiency and resistance of the dust collector increase accordingly. When the pressure difference on both sides of the filter material is large, some fine dust particles attached to the filter material will be squeezed over, reducing the efficiency of the dust collector. The outer surface of the filter bag needs to be dusted regularly.

[0034] For example, the Chinese patent with application number "202321101740.5" and name "A bag dust collector with a pre-cleaning device" removes dust from the surface of the filter bag by using a scraper sleeve that reciprocates up and down along the track of the filter bag.

[0035] However, since the scraper needs to reciprocate along the filter bag track, the scraped dust will accumulate on both surfaces of the scraper, and the dust collecting trough is located below the filter bag, and a large amount of dust will accumulate on the upper surface of the scraper.

[0036] In view of the above technical problems, the present application provides a bag dust collector with a dust cleaning structure. Figure 1 The overall structural schematic diagram of a bag filter with a dust cleaning structure is shown; Figure 2 A schematic cross-sectional view of a bag filter with a dust cleaning structure is shown; Figure 1 and Figure 2 The bag filter with dust cleaning structure includes:

[0037] Ontology 110;

[0038] The filter bag 120 is vertically installed in the body 110;

[0039] The bidirectional screw rod 130 is arranged parallel to the filter bag 120, and one end of the bidirectional screw rod 130 is inserted into the body 110 and is rotatably connected thereto;

[0040] The lifting frame 140 is rotatably connected to the bidirectional screw rod 130 and slidably connected to the body 110. When the bidirectional screw rod 130 rotates, the lifting frame 140 can be driven to reciprocate along the track of the bidirectional screw rod 130;

[0041] The support frame 150 is installed in the body 110 and is located below the filter bag 120 . The bottom end of the bidirectional screw rod 130 is rotatably connected to the upper surface of the support frame 150 .

[0042] During use, a rotational force is provided to the bidirectional screw rod 130 to drive the lifting frame 140 to perform reciprocating motion along the trajectory of the filter bag 120, so as to scrape off the dust on the outer surface of the filter bag 120. The above is the prior art and will not be elaborated herein.

[0043] Figure 3 A schematic diagram of the structure of the support ring 210 and the scraper 220 is shown; Figure 4 A schematic diagram of the structure of the scraper 221 and the extension arm 222 is shown; Figure 5 A cross-sectional structural schematic diagram of the support ring 210 is shown;

[0044] Figure 6 A schematic structural diagram of the fixing ring 230 is shown; Figure 3-Figure 6 In the embodiment, a dust cleaning component corresponding to the filter bag 120 is arranged in the body 110, and the dust cleaning component includes:

[0045] A support ring 210 is connected to the lifting frame 140, and a through hole 211 is formed on the support ring 210 along its thickness direction;

[0046] The scraper 220 is composed of at least three groups of scrapers 221 surrounding the filter bag 120. Each group of scrapers 221 has an extension arm 222 extending outward. The extension arm 222 is rotatably connected to the support ring 210. The through hole 211 corresponds to the extension arm 222.

[0047] The fixing ring 230 is connected to the support frame 150 , and the upper surface of the fixing ring 230 has a lifting column 231 corresponding to the through hole 211 ;

[0048] When the scraper 220 moves downward, it is in a folded state and the lower edge of the scraper 221 is inserted into the dust layer to scrape the dust. The scraper 220 is in a folded state to form a closed ring body with a wide top and a narrow bottom.

[0049] The dust scraping member 220 is in an open state when rising, and the lower edge of the scraper 221 does not contact the dust layer. There is a gap between the lower edges of two adjacent groups of scrapers 221 when the dust scraping member 220 is in the open state.

[0050] The lifting column 231 can penetrate the through hole 211 to drive the scraper 220 to rotate, so as to switch the scraper 220 from a closed state to an open state;

[0051] The top wall of the main body 110 can abut against the extension arm 222 to drive the scraper 220 to rotate, so as to switch the scraper 220 from an open state to a retracted state.

[0052] It should be noted that the extension arm 222 is connected to the support ring 210 via the damping shaft, so as to ensure that the scraper 220 can maintain the current state after rotating.

[0053] During use, the support ring 210 and the scraper 220 will move downward with the lifting frame 140. At this time, the scraper 220 is in a retracted state, and the whole is a conical closed ring body that is wide at the top and narrow at the bottom. At this time, the lower edge of the scraper 221 is inserted into the dust layer, and the dust on the surface of the filter bag 120 can be scraped off when descending. When the support ring 210 is attached to the fixing ring 230, the lifting column 231 can penetrate the through hole 211 to drive the extension arm 222. At this time, the scraper 220 as a whole rotates around the connection between it and the support ring 210, so that the scraper 220 is transformed into an open state, thereby ensuring that the scraper 220 does not interfere with the filter bag 120 when it is lifted. When the scraper 220 is lifted to the top wall of the main body 110, the top wall of the main body 110 abuts against the filter bag 120. The extended arm 222 is restricted to drive the scraper 220 as a whole to rotate in the opposite direction around the connection between the scraper 220 and the support ring 210 and reset, so that the scraper 220 is transformed into a folded state, thereby ensuring that the scraper 220 can scrape off the dust on the surface of the filter bag 120 when it moves downward; in the present application, the scraper 220 has a folded state and an open state, and the scraper 220 can automatically switch to the folded state when it moves to the top to ensure that the dust layer on the surface of the filter bag 120 can be scraped off when it moves downward, and the scraper 220 can automatically switch to the open state when it moves to the bottom to ensure that it does not interfere with the filter bag 120 when it rises, thereby transforming the traditional two-way scraping into a one-way scraping, thereby avoiding the accumulation of a large amount of dust on the upper surface of the scraper 220.

[0054] Continue to see Figure 5 The inner diameter of the support ring 210 changes incrementally from top to bottom to avoid interference between the extension arm 222 and the support ring 210 when the extension arm 222 rotates.

[0055] Figure 7 A schematic cross-sectional view of the fixing ring 230 is shown; Figure 7 In the embodiment, the inner diameter of the fixing ring 230 changes in a decreasing manner from top to bottom, and the inner surface of the fixing ring 230 matches the scraper 221 in the open state.

[0056] During use, the lower edge of the scraper 221 can move to the bottom of the fixed ring 230. When the scraper 220 is transformed into an open state, the outer wall of the scraper 221 fits against the lower edge of the inner wall of the fixed ring 230. Therefore, when the scraper 220 moves up again, the inner wall of the fixed ring 230 scrapes off the dust on the outer surface of the scraper 221.

[0057] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. Bag dust collector with dust cleaning structure, including: Ontology(110); A filter bag (120) is vertically installed in the body (110); It is characterized in that a dust cleaning component corresponding to the filter bag (120) is arranged in the body (110), and the dust cleaning component comprises: A support ring (210) is driven by an external force to reciprocate along the track of the filter bag (120), and a through hole (211) is formed on the support ring (210) along its thickness direction; A scraper (220) is composed of at least three groups of scrapers (221) surrounding the filter bag (120), each group of the scrapers (221) has an outward extension arm (222), the extension arm (222) is rotatably connected to the support ring (210), and the through hole (211) corresponds to the extension arm (222); A fixing ring (230) is arranged below the filter bag (120), and the upper surface of the fixing ring (230) has a lifting column (231) corresponding to the through hole (211); The scraper (220) is in a retracted state when moving downward, and the lower edge of the scraper (221) is inserted into the dust layer to scrape the dust. The scraper (220) is in a closed ring state that is wide at the top and narrow at the bottom. The scraping member (220) is in an open state when rising and the lower edge of the scraper (221) does not contact the dust layer. When the scraping member (220) is in the open state, there is a gap between the lower edges of two adjacent groups of scrapers (221).

2. The bag filter with a dust cleaning structure according to claim 1 is characterized in that: The lifting column (231) can penetrate the through hole (211) to drive the scraper (220) to rotate, so as to switch the scraper (220) from a retracted state to an open state; The top wall of the body (110) can abut against the extension arm (222) to drive the scraper (220) to rotate, so as to switch the scraper (220) from an open state to a retracted state.

3. The bag filter with a dust cleaning structure according to claim 2 is characterized in that: The inner diameter of the support ring (210) changes in an incremental manner from top to bottom to avoid interference between the extension arm (222) and the support ring (210) when the extension arm (222) rotates.

4. The bag filter with a dust cleaning structure according to claim 3 is characterized in that: The inner diameter of the fixing ring (230) changes in a decreasing manner from top to bottom, and the inner surface of the fixing ring (230) matches the scraper (221) in an open state.

5. The bag filter with a dust cleaning structure according to claim 3, characterized in that: The extension arm (222) is connected to the support ring (210) via a damping shaft.

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