A self-cleaning baghouse

Abstract

This utility model discloses a self-cleaning bag filter. The self-cleaning bag filter includes a cleaning unit positioned above the filter bag. The cleaning unit includes a housing and a retractable air nozzle located within it. The air nozzle is connected to an air chamber via a flexible hose. A cylinder is located on one side of the air chamber, containing a piston and a rod. The air nozzle is mounted on the cylinder. When not in operation, the air nozzle fully retracts into the housing. Simultaneously, a second spring and corresponding first and second cover plates ensure that the air nozzle remains sealed between the cover plates during non-operational periods, preventing dust erosion and extending the air nozzle's lifespan.

Description

Technical Field

[0001] This utility model relates to the field of dust collector technology, and in particular to a self-cleaning bag dust collector. Background Technology

[0002] A baghouse dust collector is a dry dust filtration device. It is suitable for collecting fine, dry, non-fibrous dust. The filter bags are made of woven filter cloth or non-woven felt, utilizing the filtration effect of the fibrous fabric to filter dust-laden gas. When dust-laden gas enters the baghouse dust collector, larger, heavier dust particles settle due to gravity and fall into the ash hopper. Gas containing finer dust particles is purified as it passes through the filter media, where the dust is trapped. However, over long-term operation, dust accumulation in the filter bags can reduce filtration efficiency. Traditional cleaning methods often involve manual backflushing or mechanical vibration, which exposes the air nozzles directly inside the dust collector casing, leading to nozzle wear and a shortened lifespan. Utility Model Content

[0003] This invention addresses the shortcomings of existing technologies by providing a self-cleaning bag filter.

[0004] To solve the above-mentioned technical problems, the present invention is solved by the following technical solution: A self-cleaning bag dust collector includes a cleaning unit disposed above the dust collector bag. The cleaning unit includes a housing and a retractable air nozzle located therein. The air nozzle is connected to an air chamber via a hose. A cylinder is disposed on one side of the air chamber. The cylinder contains a piston and a rod. The air nozzle is disposed on the cylinder.

[0005] In the above scheme, preferably, the rod, piston and rod are provided on both sides of the air chamber, and the air nozzle is disposed between the rods.

[0006] In the above scheme, preferably, an electromagnetic valve is provided between the air chamber and the cylinder, and when the electromagnetic valve is energized, the air chamber is unidirectionally connected to the cylinder.

[0007] In the above scheme, preferably, a first spring is provided between the cylinder and the piston, and the first spring passes through the rod.

[0008] In the above scheme, it is preferred that a cover plate for sealing is provided on the outside of the housing.

[0009] In the above scheme, preferably, a first cover plate and a second cover plate are slidably disposed on the housing, and both the first cover plate and the second cover plate are connected to the housing by a second spring.

[0010] In the above scheme, preferably, the first cover plate and the second cover plate are provided with corresponding inclined surfaces for the air nozzle.

[0011] In the above scheme, preferably, a baffle is provided protrudingly on the first cover plate, and a groove for placing the baffle is provided on the second cover plate.

[0012] In the above scheme, preferably, the baffle and the groove are disposed below the inclined surface.

[0013] The beneficial effects of this utility model are: when the air nozzle is not in operation, it is completely retracted into the housing. At the same time, in conjunction with the second spring and the corresponding first and second cover plates, the air nozzle is kept between the closed and protected cover plates during the non-operation period, which isolates it from dust erosion and extends the service life of the air nozzle. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the external appearance of the present utility model.

[0015] Figure 2 This is a side view of the present invention.

[0016] Figure 3 for Figure 2 A sectional view along line AA.

[0017] Figure 4 for Figure 3 Enlarged view of point B.

[0018] Figure 5 This is a schematic diagram showing the state of the air nozzle breaking through the first and second cover plates of this utility model. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: See below Figures 1-5 A self-cleaning bag filter includes a housing 2, within which is an air nozzle 3 that can extend and retract vertically. The vertical direction refers to the orientation of the filter bags within the dust collector.

[0020] An air chamber 5 is also provided in the housing 2. The air nozzle 3 is connected to the air chamber 5 through a flexible hose 4. At least one cylinder 6 is fixedly connected to the bottom of the air chamber 5. The cylinder 6 contains a reciprocating piston 8 and a rod 7 extending to the outside of the cylinder 6 connected to the piston 8. The air nozzle 3 is directly installed at the end of the rod 7.

[0021] Furthermore, in this embodiment, the cylinder body 6 is provided with two sets of air chambers 5 distributed below the air chambers 5. The air chambers are connected to the input component 17. The input component 17 generally includes an input pipe and an input air pump connected to each other, which is used to inflate the air chambers 5.

[0022] Each cylinder 6 is equipped with an independent piston 8 and rod 7. The air chamber 5 is connected to each cylinder 6 by a solenoid valve 9. When the solenoid valve 9 is energized, compressed air can flow from the air chamber 5 into the cylinder 6 in one direction and push the piston 8 to move. That is, the rod 7 can drive the air nozzle 3 to move outward of the housing 2. At the same time, when the solenoid valve 9 is de-energized, the solenoid valve 9 is bidirectionally connected.

[0023] A first spring 10 is provided between the cylinder 6 and the piston 8, and the first spring 10 is sleeved on the rod 7. When the solenoid valve 9 is closed, the elastic force of the first spring 10 drives the piston 8 to reset, causing the air nozzle 3 to retract.

[0024] Furthermore, to prevent dust from affecting the air nozzle 3 if it is not cleaned, a sliding first cover plate 11 and a second cover plate 12 are provided at the opening on the outer side of the housing 2. The two are elastically connected to the side wall of the housing 2 by a second spring 13. The inner edges of the two cover plates are machined with mutually cooperating bevels 14, and the bevels 14 are set to cooperate with the air nozzle 3. That is, when the air nozzle 3 is extended, its end can push the cover plate open along the bevel 14; after the air nozzle 3 is retracted, the second spring 13 pulls the cover plate to close again.

[0025] To prevent dust from overflowing through the gaps between the covers and clogging the air nozzle 3 when the covers are closed, a downwardly protruding baffle 15 is provided at the bottom of the first cover 11, and a corresponding groove 16 is provided on the second cover 12 to accommodate the baffle 15. The engagement position of the baffle 15 and the groove 16 is designed below the inclined surface 14 structure to ensure that the baffle 15 is embedded in the groove 16 to form a mechanical lock when the covers are closed.

[0026] In the initial state, the nozzle 3 retracts, and the two cover plates close to seal the housing 2. When dust removal is required, the solenoid valve 9 is energized, and compressed air enters the cylinder 6 to push the piston 8 out. The rod 7 drives the nozzle 3 to open the inclined surface 14 of the cover plate and extend into the opening of the dust collector bag 1 to blow air. After dust removal is completed, the solenoid valve 9 is de-energized, the first spring 10 pulls the piston 8 to reset, the nozzle 3 retracts, and the second spring 13 pulls the cover plate to slide and close along the inclined surface 14. The baffle 15 and the groove 16 interlock and seal.

[0027] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A self-cleaning bag filter, characterized in that: The cleaning unit includes a cleaning unit positioned above a dust collection bag (1). The cleaning unit includes a housing (2) and a retractable air nozzle (3) located therein. The air nozzle (3) is connected to an air chamber (5) via a hose (4). A cylinder (6) is provided on one side of the air chamber (5). The cylinder (6) contains a piston (8) and a rod (7). The air nozzle (3) is located on the cylinder (6).

2. The self-cleaning bag filter according to claim 1, characterized in that: The air chamber (5) is provided with rod (7), piston (8) and rod (7) on both sides, and the air nozzle (3) is provided between the rod (7).

3. A self-cleaning bag filter according to claim 2, characterized in that: A solenoid valve (9) is provided between the air chamber (5) and the cylinder (6). When the solenoid valve (9) is energized, the air chamber (5) is unidirectionally connected to the cylinder (6).

4. A self-cleaning bag filter according to claim 3, characterized in that: A first spring (10) is provided between the cylinder (6) and the piston (8), and the first spring (10) passes through the rod (7).

5. A self-cleaning bag filter according to claim 1 or 4, characterized in that: The outer side of the housing (2) is provided with a cover plate for sealing.

6. A self-cleaning bag filter according to claim 5, characterized in that: A first cover plate (11) and a second cover plate (12) are slidably disposed on the housing (2), and the first cover plate (11) and the second cover plate (12) are both connected to the housing (2) by a second spring (13).

7. A self-cleaning bag filter according to claim 6, characterized in that: The first cover plate (11) and the second cover plate (12) are provided with corresponding inclined surfaces (14) for the air nozzle (3).

8. A self-cleaning bag filter according to claim 7, characterized in that: The first cover plate (11) has a protruding baffle (15), and the second cover plate (12) has a groove (16) for placing the baffle (15).

9. A self-cleaning bag filter according to claim 8, characterized in that: The baffle (15) and the groove (16) are located below the inclined surface (14).

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