Double-layer high-volume ventilation dust collector for upgrading old dust removal systems.
By designing a double-layer, high-volume ventilation dust collector, the problems of insufficient filtration area and increased costs of old dust collectors after capacity expansion are solved, achieving efficient filtration and resource conservation within a limited space.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU RUILI ENVIRONMENTAL PROTECTION ENG CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-03
AI Technical Summary
Old dust collectors cannot meet the filtration area requirements after capacity expansion, resulting in waste of land resources and increased operating costs. In addition, traditional renovation methods pose risks of ash hopper overload and filter bag wear.
The double-layer high-volume ventilation dust collector adopts a structure in which the upper ash discharge pipe passes through the lower ash hopper, increasing the number of filter bags and forming a balanced airflow path in a limited space. Combined with the design of upper and lower ash hoppers and clean room, it avoids ash hopper overload and filter bag wear, and saves power equipment.
It significantly increases the filtration area without expanding the site, saving land resources and operating costs, reducing equipment investment and energy consumption, and ensuring the lifespan of the filter bags.
Smart Images
Figure CN224442440U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of environmental protection technology, specifically a double-layer high-volume ventilation dust collector for expanding old dust removal capacity. Background Technology
[0002] With technological advancements, the production capacity of existing equipment typically expands. This expansion inevitably leads to a corresponding increase in the amount of dust-laden flue gas produced, rendering existing dust collectors inadequate and necessitating an expansion of the dust collector's filtration area. However, expanding the filtration area requires increasing the number of filter bags within the dust collector, which significantly increases the floor space required, resulting in a substantial waste of land resources.
[0003] If the existing factory buildings and equipment are already densely packed, and no additional land can be provided to increase the filtration area of the dust collector, either the dust collector cannot be modified, resulting in non-compliance with environmental standards, or the filter bags inside the dust collector can be replaced with pleated filter bags. However, pleated filter bags often have many dead corners, which pulse cleaning cannot clean, significantly reducing the lifespan of the pleated filter bags and requiring frequent replacement, thus greatly increasing the operating costs of the dust collector.
[0004] The relevant reference CN114130131A discloses an integrated bag filter dust collector, which includes at least two sets of dust collector bodies that can be detachably connected end to end. A ash discharge pipe is inserted between the upper end face of the connecting pipe of the lower dust collector body and the lower end face of the ash hopper of the upper dust collector body, so that the dust filtered and collected by the first dust collector body falls directly into the ash hopper of the second dust collector. Although the dust collectors can be stacked as needed, it is easy to cause overload of the lower ash hopper. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a double-layer high-volume ventilation dust collector for expanding old dust collectors, which saves land resources, reduces the operating cost of dust collectors, and prevents the ash hopper from being overloaded.
[0006] To solve the above technical problems, this utility model provides a double-layer high-volume ventilation dust collector for expanding the capacity of old dust collection systems. The dust collector body mainly consists of an upper dust collector and a lower dust collector. The upper dust collector includes an upper housing, with an air inlet and an air outlet located at the center of each of its two sides. The lower dust collector includes a lower housing, with a second air inlet and an second air outlet located at the center of each of its two sides. The first and second air inlets are connected to a main air inlet pipe via pipes. The bottom of the upper housing and the top of the lower housing are connected. An upper ash discharge pipe is installed at the bottom of the upper ash hopper in the upper dust collector, passing through the lower dust collector and exiting from the wall of the lower ash hopper in the lower dust collector.
[0007] By adopting the above technical solution, a double-layer ventilation dust collector with an upper ash discharge pipe passing through the lower ash hopper is used to replace the traditional dust collector. The number of filter bags is doubled, and the filtration area is greatly increased without expanding the original dust collector site, saving land resources and reducing the operating cost of the dust collector.
[0008] Preferably, two rows of filter bag chambers are symmetrically arranged inside the upper box, and an upper ash hopper is provided below each filter bag chamber.
[0009] By adopting the above technical solution, within the limited upper chamber space, two rows of filter bags are symmetrically distributed, forming a balanced airflow path and maximizing the number of filter bags. After the dust-laden gas is filtered by the filter bags, the ash and slag fall directly into the corresponding upper ash hopper.
[0010] Preferably, two rows of filter bag chambers are symmetrically arranged in the lower box, and a lower ash hopper is provided below each filter bag chamber.
[0011] By adopting the above technical solution, within the limited lower chamber space, the two rows of filter bags are symmetrically distributed, forming a balanced airflow path and maximizing the number of filter bags. After the dust-laden gas is filtered by the filter bags, the ash and slag fall directly into the corresponding lower ash hopper.
[0012] Preferably, an air inlet is connected to an ash hopper via an air inlet pipe, an installation perforated plate is installed in a filter bag chamber, a filter bag is installed on the installation perforated plate, and a cleaning chamber is installed at the top of the filter bag chamber.
[0013] By adopting the above technical solution, the dust-laden gas first enters the upper ash hopper through the inlet duct, where large dust particles settle, preventing them from directly impacting the surface of the filter bags and reducing the risk of damage to the filter bags due to mechanical wear. The purified gas then enters the clean air chamber and is discharged unidirectionally through the outlet, avoiding gas turbulence or backflow.
[0014] Preferably, the second air inlet is connected to the lower ash hopper through the second air inlet pipe, the second filter bag chamber is provided with the second mounting plate, the second filter bag is provided on the second mounting plate, and the second cleaning chamber is provided on the upper part of the second filter bag chamber.
[0015] By adopting the above technical solution, the dust-laden gas first enters the lower ash hopper through the second inlet pipe. Large dust particles settle in the lower ash hopper, preventing them from directly impacting the surface of the second filter bag and reducing the risk of damage to the second filter bag due to mechanical wear. After purification, the gas enters the second clean air chamber and is discharged unidirectionally through the second outlet, avoiding gas turbulence or backflow.
[0016] Preferably, the bottom of the upper ash discharge pipe is bent, and it passes through the second mounting orifice plate and the lower ash hopper in sequence. The upper ash discharge pipe is sealed and connected to the second mounting orifice plate and the lower ash hopper respectively.
[0017] By adopting the above technical solution, the structure of the upper ash discharge pipe extending through the lower ash hopper prevents overloading of the lower ash hopper and eliminates the need for power equipment such as screw conveyors, reducing investment and operating energy consumption. The upper ash discharge pipe is sealed to the mounting orifice plate and the lower ash hopper, effectively preventing the risk of ash leakage during transportation.
[0018] Preferably, a lower ash discharge port is provided at the bottom of the lower ash hopper, and the dust in the upper ash discharge pipe and the lower ash discharge port falls into the same scraper conveyor.
[0019] By adopting the above technical solution, the upper ash discharge pipe and the lower ash discharge port share a single scraper conveyor, reducing the number of scraper conveyors, reducing equipment, and reducing costs.
[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0021] 1. This utility model adopts a double-layer ventilation dust collector with an upper ash discharge pipe passing through the lower ash hopper to replace the traditional dust collector. The number of filter bags is doubled, and the filtration area is greatly increased without expanding the original dust collector site, saving land resources and reducing the operating cost of the dust collector.
[0022] 2. This utility model features two rows of filter bag chambers symmetrically arranged in both the upper and lower housings, with a dust hopper located beneath each filter bag chamber. Within the limited space of the housing, the symmetrical distribution of the two rows of filter bag chambers creates a balanced airflow path and maximizes the number of filter bags. After the dust-laden gas is filtered by the filter bags, the ash directly falls into the corresponding dust hopper of each filter bag chamber.
[0023] 3. The structure of this utility model, where the upper ash discharge pipe extends through the lower ash hopper, prevents overloading of the lower ash hopper and eliminates the need for power equipment such as screw conveyors, thus reducing investment and operating energy consumption. The upper ash discharge pipe is sealed to the mounting orifice plate and the lower ash hopper, eliminating the risk of ash leakage during transportation. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the structure of this utility model;
[0025] Figure 2 This is a left-side view of the present invention;
[0026] Figure 3 This is a structural diagram of the ash unloading pipe of this utility model;
[0027] Figure 4 This is a schematic diagram showing the connection between the upper ash discharge pipe and the lower ash hopper of this utility model.
[0028] Drawing No.: 1. Dust collector body, 2. Upper dust collector, 3. Lower dust collector, 4. Upper housing, 5. Inlet 1, 6. Outlet 1, 7. Lower housing, 8. Inlet 2, 9. Upper ash hopper, 10. Upper ash discharge pipe, 11. Lower ash hopper, 12. Filter bag chamber 1, 13. Filter bag chamber 2, 14. Mounting perforated plate 1, 15. Filter bag 1, 16. Clean chamber 1, 17. Mounting perforated plate 2, 18. Filter bag 2, 19. Clean chamber 2, 20. Outlet 2, 21. Inlet pipe 1, 22. Inlet pipe 2, 23. Lower ash discharge port, 24. Vertical section, 25. Bending connection section, 26. Through section. Detailed Implementation
[0029] like Figure 1 As shown, the double-layer high-volume ventilation dust collector for expanding old dust collection capacity includes a dust collector body 1, which mainly consists of an upper dust collector 2 and a lower dust collector 3. The upper dust collector 2 includes an upper housing 4, with an air inlet 5 and an air outlet 6 on the middle of each side of the upper housing 4. The lower dust collector 3 includes a lower housing 7, with an air inlet 8 and an air outlet 20 on the middle of each side of the lower housing 7. The air inlets 5 and 8 are connected to the main air inlet pipe through pipes. The bottom of the upper housing 4 is connected to the top of the lower housing 7. An upper ash discharge pipe 10 is installed at the bottom of the upper ash hopper 9 in the upper dust collector 2. The upper ash discharge pipe 10 passes through the lower dust collector 3 and exits from the wall of the lower ash hopper 11 in the lower dust collector 3. This application replaces the traditional dust collector with a double-layer ventilation dust collector where the top ash discharge pipe passes through the bottom ash hopper. The number of filter bags is doubled, which greatly increases the filtration area without expanding the original dust collector site, saving land resources and reducing the operating cost of the dust collector.
[0030] Two rows of filter bag chambers 12 are symmetrically arranged inside the upper housing 4, with an upper ash hopper 9 located below each filter bag chamber 12. Within the limited space of the upper housing, the two rows of filter bag chambers are symmetrically distributed, forming a balanced airflow path and ensuring that the number of filter bags 15 is maximized. After the dust-laden gas is filtered by the filter bags 15, the ash and slag fall directly into the corresponding upper ash hopper.
[0031] Two rows of filter bag chambers 13 are symmetrically arranged inside the lower housing 7, with a lower ash hopper 11 located below each filter bag chamber 13. Within the limited space of the lower housing, the two rows of filter bag chambers 13 are symmetrically distributed, forming a balanced airflow path and maximizing the number of filter bags 18. After the dust-laden gas is filtered by the filter bags 18, the ash and slag fall directly into the corresponding lower ash hopper.
[0032] like Figure 2As shown, the air inlet 5 is connected to the upper ash hopper 9 via the air inlet pipe 21. An installation plate 14 is installed in the filter bag chamber 12, and filter bags 15 with internal metal frames are mounted on the installation plate 14. Dust-laden gas is filtered through the filter bags 15. A clean air chamber 16 is located at the top of the filter bag chamber 12. The purified gas enters the clean air chamber 16 at the top of the filter bag chamber 12 and is discharged through the air outlet 6. The dust-laden gas first enters the upper ash hopper 9 through the air inlet pipe 21, where large dust particles settle, preventing them from directly impacting the surface of the filter bags 15 and reducing the risk of damage due to mechanical wear. After entering the clean air chamber 16, the purified gas is discharged unidirectionally through the air outlet 6, avoiding gas turbulence or backflow.
[0033] Air inlet 28 is connected to lower ash hopper 11 via air inlet pipe 22. A perforated plate 27 is installed in filter bag chamber 23, and filter bags 28 with internal metal frames are mounted on the perforated plate 217. Dust-laden gas is filtered by filter bags 218. A clean air chamber 29 is located at the top of filter bag chamber 23. The purified gas enters clean air chamber 29 at the top of filter bag chamber 213 and is discharged through air outlet 20. Dust-laden gas first enters lower ash hopper 11 through air inlet pipe 22, where large dust particles settle, preventing them from directly impacting the surface of filter bags 218 and reducing the risk of damage due to mechanical wear. The purified gas then enters clean air chamber 219 and is discharged unidirectionally through air outlet 20, preventing gas turbulence or backflow.
[0034] like Figure 3 , 4 As shown, the bottom of the upper ash discharge pipe 10 is bent, consisting of three pipes connected in sequence: a vertical section 24, a bent connecting section 25, and a through section 26. The vertical section 24 passes through the mounting orifice plate 17, and is connected to the bent connecting section 25. The bent connecting section 25 is connected to the through section 26, which extends out of the lower ash hopper 11. The vertical section 24 and the mounting orifice plate 17 are sealed together by a sealing ring, and the through section 26 and the lower ash hopper 11 are also sealed together by a sealing ring. The structure of the upper ash discharge pipe 10 extending through the lower ash hopper 11 prevents overloading of the ash hopper and eliminates the need for power equipment such as screw conveyors, reducing investment and operating energy consumption. The sealed connection between the upper ash discharge pipe 10 and the mounting orifice plate 17 and the lower ash hopper 11 effectively eliminates the risk of ash leakage during transportation.
[0035] The bottom of the lower ash hopper 11 is equipped with a lower ash discharge port 23. Dust from the upper ash discharge pipe 10 and the lower ash discharge port 23 falls into the same scraper conveyor. The upper ash discharge pipe 10 and the lower ash discharge port 23 share the same scraper conveyor, reducing the number of scraper conveyors, reducing equipment, and reducing costs.
[0036] This application replaces the traditional dust collector with a double-layer, high-volume ventilation dust collector featuring an upper ash discharge pipe 10 exiting through a lower ash hopper 11. The dust collector employs a double-layer structure, doubling the number of filter bags and significantly increasing the filtration area without expanding the original dust collector's footprint. The upper dust collector has one inlet and one outlet, as does the lower dust collector. Flue gas is split into two paths via a main pipe: one path enters the upper dust collector for filtration, and the other path enters the lower dust collector for filtration. Both the upper and lower dust collectors retain separate ash hoppers, each with independent ash discharge for convenient unloading and maintenance. The bottom of the ash discharge pipe in the upper dust collector's ash hopper is bent; this pipe passes through the lower dust collector and exits from the ash hopper wall. Ash from both the upper and lower dust collectors is discharged onto the same scraper conveyor, which then transports it to a centralized ash silo.
[0037] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.
Claims
1. A double-layer high-volume ventilation dust collector for expanding old dust collection systems, comprising a dust collector body (1), the dust collector body (1) mainly consisting of an upper dust collector (2) and a lower dust collector (3); characterized in that: The upper dust collector (2) includes an upper housing (4), with an air inlet (5) and an air outlet (6) located in the middle of each side of the upper housing (4); the lower dust collector (3) includes a lower housing (7), with an air inlet (8) and an air outlet (20) located in the middle of each side of the lower housing (7); the air inlet (5) and the air outlet (8) are connected by a pipe and an air inlet manifold, respectively; the bottom of the upper housing (4) is connected to the top of the lower housing (7); the upper ash hopper (9) in the upper dust collector (2) is provided with an upper ash discharge pipe (10) at the bottom, which passes through the lower dust collector (3) and exits from the wall of the lower ash hopper (11) in the lower dust collector (3).
2. The old dust removal and expansion double-layer large air volume ventilation dust collector according to claim 1, characterized in that: The upper box (4) is symmetrically arranged with two rows of filter bag chambers (12), and each filter bag chamber (12) is provided with an upper ash hopper (9) below it.
3. The old dust removal and expansion double-layer large air volume ventilation dust collector according to claim 1, characterized in that: The lower housing (7) is symmetrically arranged with two rows of filter bag chambers (13), and each filter bag chamber (13) is provided with a lower ash hopper (11) below it.
4. The old dust removal and expansion double-layer large air volume ventilation dust collector according to claim 1, characterized in that: The air inlet (5) is connected to the ash hopper (9) through the air inlet pipe (21). The filter bag chamber (12) is provided with the mounting plate (14), the mounting plate (14) is provided with the filter bag (15), and the upper part of the filter bag chamber (12) is provided with the cleaning chamber (16).
5. The old dust removal and expansion double-layer large air volume ventilation dust collector according to claim 1, characterized in that: The second air inlet (8) is connected to the lower ash hopper (11) through the second air inlet pipe (22). The second filter bag chamber (13) is provided with the second mounting plate (17), the second filter bag (18) is provided on the second mounting plate (17), and the second cleaning chamber (19) is provided on the upper part of the second filter bag chamber (13).
6. The old dust removal and expansion double-layer large air volume ventilation dust collector according to claim 5, characterized in that: The bottom of the upper ash discharge pipe (10) is bent and passes through the second mounting hole plate (17) and the lower ash hopper (11) in sequence. The upper ash discharge pipe (10) is sealed and connected to the second mounting hole plate (17) and the lower ash hopper (11) respectively.
7. The old dust removal and expansion double-layer large air volume ventilation dust collector according to claim 1, characterized in that: The bottom of the lower ash hopper (11) is provided with a lower ash discharge port (23), and the dust in the upper ash discharge pipe (10) and the lower ash discharge port (23) falls into the same scraper conveyor.