Double-top-cover bag-type dust collector

Abstract

The utility model discloses a double-top-cover bag-type dust collector, which belongs to the technical field of bag-type dust collectors and comprises a bag-type dust collector box body, a dust hopper is fixedly mounted at the bottom end of the bag-type dust collector box body, an air outlet is arranged at the upper end of one side of the bag-type dust collector box body, and an air inlet is arranged at the lower end of the other side of the bag-type dust collector box body. A pulse dust removal assembly is arranged at the upper end of one end of the bag-type dust collector box body, a top cover assembly is fixedly arranged at the top end of the bag-type dust collector box body, and the top cover assembly comprises a rainproof shed cover and a sealing heat preservation cover set. The rain-proof shed cover, the bottom support, the top support and the isolation frame are of an integrally-formed structure, the top end of the rain-proof shed cover is the cambered surface, and the hydrophobic coating is arranged on the outer wall of the top end of the rain-proof shed cover, so that rainwater is prevented from staying at the top end of the double-layer top cover, and the risk that the rain-proof shed cover is corroded and deformed is reduced; the length and the width of the rain-proof shed cover are larger than those of the bag-type dust collector box body, so that rainwater is prevented from flowing on the surface of the bag-type dust collector when being guided out.

Description

Technical Field

[0001] The utility model relates to the technical field of bag filters, in particular to a bag filter with double top covers. Background Art

[0002] Bag filters are suitable for collecting fine, dry, non-fibrous dust. The filter bags are made of woven filter cloth or non-woven felt, and the fiber fabric is used to filter the dust-containing gas. When the dust-containing gas enters the bag filter, dust with large particles and high specific gravity settles down due to the action of gravity and falls into the ash hopper. When the gas containing finer dust passes through the filter material, the dust is retained, and the gas is purified. The top cover of the clean gas chamber of a conventional bag filter is single-layer. In the production and installation process, heat preservation and airtightness are the core technical requirements of the top cover.

[0003] After retrieval, the patent with the publication number CN203971610U discloses a patent named double-layer top cover of a bag filter. The technical problems to be solved are the heat deformation of the dust collector structure and the phenomenon that the door cover is not tightly sealed due to inspection and maintenance, which will deteriorate seriously over time, and the corrosion phenomenon of the clean gas chamber of the dust collector will soon appear. By providing an inner door cover under the outer door cover, an intermediate transition space is formed between the two layers of door covers. Here, a transitional gradient will be formed for the difference in gas components, air pressure difference, and temperature difference inside and outside the dust collector. Especially, the stratification of the air pressure difference is reduced, and the effect of cold air leakage from the outside to the clean gas chamber of the dust collector is greatly reduced, so as to realize the stability of the temperature environment in the clean gas chamber and well improve the condensation and corrosion phenomena of harmful components in the flue gas. However, there are still the following drawbacks to be solved: There is no rain-proof mechanism on its top cover, resulting in some rainwater staying on the top of the top cover, increasing the safety hazards of top cover deformation and poor sealing effect. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a bag filter with double top covers.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A bag filter with double top covers includes a bag filter box body. A dust hopper is fixedly installed at the bottom end of the bag filter box body. An air outlet is arranged at the upper end of one side of the bag filter box body. An air inlet is arranged at the lower end of the other side of the bag filter box body. A pulse dust removal component is arranged at the upper end of one end of the bag filter box body. A top cover component is fixedly arranged at the top end of the bag filter box body, and the top cover component includes a rain-proof shed cover and a sealing and heat-insulating cover group.

[0007] Preferably, the top end of the rainproof shed cover is an arc surface, and a hydrophobic coating is provided on the outer wall of the top end of the rainproof shed cover. The length and width of the rainproof shed cover are both greater than the length and width of the bag filter housing.

[0008] Preferably, a fixing frame is fixedly installed at the upper end of the inner wall of the bag filter housing, and the sealed heat-insulating cover group is located inside the fixing frame.

[0009] Preferably, the sealed heat-insulating cover group includes a bottom support and a top support, and an isolation frame is fixedly arranged between the bottom support and the top support. A heat-insulating sleeve is sleeved outside the isolation frame, a drying core is sleeved inside the isolation frame, and a rubber layer is sleeved outside the isolation frame.

[0010] Preferably, sound-insulating particles are filled inside the top support. A rectangular protrusion is fixedly arranged at the top end of the bottom support, and a docking card slot is opened at the bottom end of the fixing frame. The rectangular protrusion and the docking card slot are matched with each other.

[0011] Preferably, the rainproof shed cover, the bottom support, the top support and the isolation frame are of an integrally formed structure.

[0012] Preferably, the heat-insulating sleeve includes a ribbed wire frame, and heat-insulating sealing layers are arranged on both the inner side and the outer side of the ribbed wire frame.

[0013] The beneficial effects of the present utility model are as follows:

[0014] For a double-top-cover bag filter proposed by the present utility model, since the rainproof shed cover, the bottom support, the top support and the isolation frame are of an integrally formed structure, a heat-insulating sleeve is sleeved outside the isolation frame, a drying core is sleeved inside the isolation frame, and a rubber layer is sleeved outside the isolation frame, good heat preservation and sealing effects are achieved both inside and outside the isolation frame. At the same time, the drying core can timely absorb the moisture inside the double-top cover, avoiding the phenomenon of condensation or even corrosion inside the double-top cover. Moreover, the bottom support and the fixing frame are further matched by the rectangular protrusion and the docking card slot to increase the stability of the double-top cover inside the bag filter housing. In addition, the top end of the rainproof shed cover is an arc surface, and a hydrophobic coating is provided on the outer wall of the top end of the rainproof shed cover, which can prevent rainwater from staying on the top end of the double-top cover, reducing the risk of corrosion and deformation of the rainproof shed cover. The length and width of the rainproof shed cover are both greater than the length and width of the bag filter housing, preventing rainwater from flowing onto the surface of the bag filter when being drained.

[0015] For a double-top-cover bag filter proposed by the present utility model, by filling sound-insulating particles inside the top support, the noise of rain hitting the rainproof shed cover can be effectively reduced. Since the heat-insulating sleeve includes a ribbed wire frame, the supporting effect of the heat-insulating sleeve is enhanced, and heat-insulating sealing layers are arranged on both the inner side and the outer side of the ribbed wire frame, further strengthening the heat preservation and heat insulation effect of the heat-insulating sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a double-top-cover bag filter proposed by the present utility model;

[0017] Figure 2 Schematic structural diagram of a top cover assembly of a double-top cover bag filter proposed by the present utility model;

[0018] Figure 3 Bottom view structural diagram of a top cover assembly of a double-top cover bag filter proposed by the present utility model;

[0019] Figure 4 Schematic structural diagram of a heat preservation sleeve of a double-top cover bag filter proposed by the present utility model.

[0020] In the figure: 1 bag filter housing, 2 ash hopper, 3 rain shelter cover, 4 fixing frame, 5 sealing cover, 6 bottom support, 7 top support, 8 isolation frame, 9 heat preservation sleeve, 10 drying core, 11 rectangular protrusion, 12 docking card slot, 13 heat preservation sealing layer, 14 ribbed wire frame, 15 sound insulation particles. Specific implementation mode

[0021] Referring to Figures 1-4 , a double-top cover bag filter includes a bag filter housing 1, an ash hopper 2 is fixedly installed at the bottom end of the bag filter housing 1, an air outlet is arranged at the upper end of one side of the bag filter housing 1, an air inlet is arranged at the lower end of the other side of the bag filter housing 1, a pulse dust removal component is arranged at the upper end of one end of the bag filter housing 1, and a top cover component is fixedly arranged at the top of the bag filter housing 1, and the top cover component includes a rain shelter cover 3 and a sealing and heat preservation cover group.

[0022] In the present utility model, the top end of the rain shelter cover 3 is an arc surface, and a hydrophobic coating is arranged on the outer wall of the top end of the rain shelter cover 3 to prevent rainwater from staying on the top end of the double-layer top cover, reducing the risk of corrosion and deformation of the rain shelter cover 3. The length and width of the rain shelter cover 3 are both greater than the length and width of the bag filter housing 1 to prevent rainwater from flowing on the surface of the bag filter when being drained;

[0023] A fixing frame 4 is fixedly installed at the upper end of the inner wall of the bag filter housing 1, and the sealing and heat preservation cover group is located inside the fixing frame 4;

[0024] The sealing and heat preservation cover group includes a bottom support 6 and a top support 7, and an isolation frame 8 is fixedly arranged between the bottom support 6 and the top support 7. A heat preservation sleeve 9 is sleeved outside the isolation frame 8, a drying core 10 is sleeved inside the isolation frame 8, and a rubber layer is sleeved outside the isolation frame 8, so that good heat preservation and sealing effects are obtained both inside and outside the isolation frame 8. At the same time, the drying core 10 can timely absorb the moisture inside the double-layer top cover, avoiding the phenomenon of condensation or even corrosion inside the double-layer top cover;

[0025] The inside of the top support 7 is filled with sound insulation particles 15. A rectangular protrusion 11 is fixedly arranged at the top end of the bottom support 6. A docking card slot 12 is opened at the bottom end of the fixed frame 4. The rectangular protrusion 11 and the docking card slot 12 are matched. The bottom support 6 and the fixed frame 4 are further matched by the rectangular protrusion 11 and the docking card slot 12 to increase the stability of the double-layer top cover inside the bag filter housing 1.

[0026] The rain shelter cover 3, the bottom support 6, the top support 7, and the isolation frame 8 are of an integrally formed structure.

[0027] The heat preservation sleeve 9 includes a ribbed wire frame 14 to enhance the support effect of the heat preservation sleeve 9. Heat preservation sealing layers 13 are arranged on both the inner side and the outer side of the ribbed wire frame 14 to further enhance the heat preservation and heat insulation effect of the heat preservation sleeve 9.

[0028] Working principle: Since the rain shelter cover 3, the bottom support 6, the top support 7, and the isolation frame 8 are of an integrally formed structure, and the heat preservation sleeve 9 is sleeved on the outer side of the isolation frame 8, the drying core 10 is sleeved on the inner side of the isolation frame 8, and a rubber layer is sleeved on the outer side of the isolation frame 8, good heat preservation and sealing effects are achieved inside and outside the isolation frame 8. At the same time, the drying core 10 can timely absorb the moisture inside the double-layer top cover, avoiding the phenomenon of condensation or even corrosion inside the double-layer top cover. The bottom support 6 and the fixed frame 4 are further matched by the rectangular protrusion 11 and the docking card slot 12 to increase the stability of the double-layer top cover inside the bag filter housing 1. The top end of the rain shelter cover 3 is an arc surface, and a hydrophobic coating is arranged on the outer wall of the top end of the rain shelter cover 3 to prevent rainwater from staying on the top end of the double-layer top cover, reducing the risk of corrosion and deformation of the rain shelter cover 3. The length and width of the rain shelter cover 3 are both greater than the length and width of the bag filter housing 1 to prevent rainwater from flowing on the surface of the bag filter when being drained.

[0029] Since the inside of the top support 7 is filled with sound insulation particles 15, the noise of rain hitting the rain shelter cover 3 is effectively reduced. Since the heat preservation sleeve 9 includes a ribbed wire frame 14 to enhance the support effect of the heat preservation sleeve 9, and heat preservation sealing layers 13 are arranged on both the inner side and the outer side of the ribbed wire frame 14, the heat preservation and heat insulation effect of the heat preservation sleeve 9 is further enhanced.

[0030] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A double-top bag dust collector, comprising a bag dust collector housing (1), a ash hopper (2) being fixedly mounted at the bottom end of the bag dust collector housing (1), an air outlet being arranged at the upper end of one side of the bag dust collector housing (1), an air inlet being arranged at the lower end of the other side of the bag dust collector housing (1), a pulse dust removal assembly being arranged at the upper end of one end of the bag dust collector housing (1), characterized in that: A top cover assembly is fixedly arranged on the top of the bag filter housing (1), and the top cover assembly comprises a rainproof canopy cover (3) and a sealing heat-insulating cover assembly.

2. A double-top bag dust collector according to claim 1, characterized in that: The top of the rainproof canopy cover (3) is an arc surface, and the outer wall of the top of the rainproof canopy cover (3) is provided with a hydrophobic coating. The length and width of the rainproof canopy cover (3) are both greater than the length and width of the bag filter housing (1).

3. A double-top bag dust collector according to claim 1, characterized in that: A fixing frame (4) is fixedly mounted on the upper end of the inner wall of the bag filter housing (1), and the sealing heat-insulating cover assembly is located inside the fixing frame (4).

4. A double-top bag dust collector according to claim 3, characterized in that: The sealed heat-insulating cover assembly comprises a bottom support (6) and a top support (7), and an isolation frame (8) is fixedly arranged between the bottom support (6) and the top support (7), the isolation frame (8) is sleeved with a heat-insulating sleeve (9) on the outside, the isolation frame (8) is sleeved with a drying core (10) on the inside, and the isolation frame (8) is sleeved with a rubber layer on the outside.

5. A double-top bag dust collector according to claim 4, characterized in that: The top support (7) is filled with sound insulation particles (15), the top of the bottom support (6) is fixedly provided with a rectangular protrusion (11), the bottom of the fixed frame (4) is provided with a docking slot (12), and the rectangular protrusion (11) and the docking slot (12) match.

6. A double-top bag dust collector according to claim 4, characterized in that: The rainproof canopy cover (3), the bottom support (6), the top support (7), and the isolation frame (8) are an integrated structure.

7. A double-top bag dust collector according to claim 4, characterized in that: The thermal insulation sleeve (9) comprises a rib-frame grid (14), and thermal insulation sealing layers (13) are provided on the inner side and the outer side of the rib-frame grid (14).

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