A self-cleaning dust collector

Abstract

This utility model discloses a self-cleaning dust collector, relating to the field of dust collector technology. In use, the housing is placed on top of the hopper, with the lower cavity communicating with the hopper. A negative pressure device is connected to the negative pressure interface. During operation, a negative pressure environment is created inside the housing, causing dust in the hopper to enter the lower cavity under pressure differential. The airflow passes through the filter cartridges, where dust is trapped on the surface. When excessive dust adheres to the surface of the filter cartridges, compressed gas is sprayed into the inner side of the filter cartridges via the main pulse pipe and auxiliary pulse pipe. The high-pressure air from the inside of the filter cartridges blows the dust adhering to the surface into a pre-set dust collection hopper below. Meanwhile, high-pressure air from the outside of the filter cartridges is blown obliquely towards the outer surface, removing firmly adhered impurities from the filter cartridge surface, thus improving self-cleaning efficiency and achieving the purpose of dust collection.

Description

Technical Field

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

[0002] Pulse jet baghouse dust collectors are mainly used for dust removal in industries such as casting, machining, metallurgy, ceramics, glass, chemicals, and grain processing. This product provides excellent dust removal for heavier materials like foundry sand and metal cutting dust, as well as medium-weight dust such as cement dust, ceramic dust, gypsum powder, asbestos powder, carbon powder, pigments, bakelite powder, and plastic powder, ensuring that emission concentrations meet or exceed national emission standards. Pulse jet baghouse dust collectors offer advantages such as small size, large air volume handling capacity, compact structure, and convenient and reliable operation.

[0003] Traditional pulse jet baghouse dust collectors, driven by a fan, create a negative pressure environment inside the collector, in the dust collection ducts, and at the dust collection hood openings. This causes dust from the dust emission points to enter the dust collector under the pressure difference. The airflow passes through the dust collection filter bags, where the dust is trapped on the surface of the bags. A PLC controller regularly inputs pulse signals to the pulse valves, and the high-pressure compressed air blows the dust adhering to the filter bag surface down and collects it in the dust collection hopper, thus achieving the purpose of dust collection. The treated clean gas is then discharged from the chimney by the dust collection fan.

[0004] Although the aforementioned traditional pulse bag filter can perform self-cleaning, it only uses high-pressure air to blow from the inside to the outside of the filter bag, resulting in poor cleaning effect on some impurities that are firmly adhered to the outside of the filter bag.

[0005] In view of this, there is an urgent need for a self-cleaning dust collector to overcome the shortcomings of existing technologies. Utility Model Content

[0006] To address the problems existing in the prior art, this utility model solves the problem using the following technical structure.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A self-cleaning dust collector includes: a housing and a self-cleaning mechanism. A partition plate is provided inside the housing, which divides the interior of the housing into two cavities, namely an upper cavity and a lower cavity. The upper cavity is located above the partition plate, and the lower cavity is located below the partition plate. A negative pressure port communicating with the upper cavity is provided on the housing, and the bottom of the housing is set as an opening.

[0009] The partition plate is provided with a plurality of cloth bag filter cylinders, and the open ends of the plurality of cloth bag filter cylinders are all in communication with the upper cavity.

[0010] The self-cleaning mechanism includes a main pulse tube and an auxiliary pulse tube. The main pulse tube is provided with a plurality of main jet pipes, which extend to the inner side of the bag filter cartridge. The auxiliary pulse tube is provided with a plurality of auxiliary jet pipes, which are disposed in the lower cavity and are disposed on the outer side of the bag filter cartridge. The air outlet direction of the auxiliary jet pipes is inclined towards the outer side of the bag filter cartridge.

[0011] The self-cleaning mechanism includes an air supply device, and both the main pulse tube and the auxiliary pulse tube are connected to the air supply device.

[0012] Both the main pulse tube and the auxiliary pulse tube are equipped with pulse valves.

[0013] The auxiliary jet pipe includes a ring pipe, which is annular and sleeved on the outside of the bag filter cartridge. The ring pipe is connected to the auxiliary pulse pipe and has several air outlet pipes. The air outlet pipes are inclined to point outward from the bag filter cartridge.

[0014] The auxiliary jet pipe includes multiple ring pipes arranged sequentially from top to bottom.

[0015] Several of the aforementioned air outlet pipes are evenly distributed around the circumference.

[0016] The bag filter cartridges are arranged in multiple rows in the horizontal direction, and each row of filter cartridges is provided with a main pulse tube and an auxiliary pulse tube.

[0017] The housing has an upper cover plate at the top of the upper cavity.

[0018] The upper cover plate is fixed to the housing by bolts.

[0019] A weighing sensor is installed at the partition plate.

[0020] The above-described structure of this utility model can achieve the following beneficial effects:

[0021] In use, the housing is placed on top of the hopper, with the lower chamber connected to the hopper. The negative pressure interface is connected to an external negative pressure device. During operation, a negative pressure environment is created inside the housing, causing dust in the hopper to enter the lower chamber under the pressure difference. The airflow passes through the filter bag cartridges, and the dust is trapped on the surface of the filter bag cartridges. When too much dust adheres to the surface of the filter bag cartridges, compressed gas is sprayed into the inner side of the filter bag cartridges through the main pulse pipe and the auxiliary pulse pipe. The high-pressure air from the inside of the filter bag cartridges blows the dust adhering to the surface of the filter bag cartridges into the pre-set dust collection hopper below. Meanwhile, the high-pressure air from the outside of the filter bag cartridges is blown obliquely towards the outer surface of the filter bag cartridges, which can blow away the more firmly adhered impurities from the surface of the filter bag cartridges, improving the self-cleaning efficiency and achieving the purpose of dust collection. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0023] Figure 2 This is a structural schematic diagram from another perspective of this embodiment.

[0024] In the diagram: 1. Shell; 2. Divider plate; 3. Bag filter cartridge; 4. Main pulse tube; 5. Auxiliary pulse tube; 6. Main jet pipe; 7. Air supply device; 8. Ring pipe; 9. Air outlet pipe; 10. Top cover plate. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0026] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products or devices.

[0027] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0028] refer to Figures 1-2 The self-cleaning dust collector shown includes: a housing 1 and a self-cleaning mechanism. A partition plate 2 is provided inside the housing 1, which divides the interior of the housing 1 into two cavities, namely an upper cavity and a lower cavity. The upper cavity is located above the partition plate 2, and the lower cavity is located below the partition plate 2. A negative pressure interface communicating with the upper cavity is provided on the housing 1, and the bottom of the housing 1 is set as an opening.

[0029] The partition plate 2 is provided with several cloth bag filter cylinders 3, and the open ends of the several cloth bag filter cylinders 3 are all connected to the upper cavity.

[0030] The self-cleaning mechanism includes a main pulse tube 4 and an auxiliary pulse tube 5. The main pulse tube 4 is provided with several main jet pipes 6, which extend to the inner side of the bag filter cartridge 3. The auxiliary pulse tube 5 is provided with several auxiliary jet pipes, which are located in the lower cavity and are located on the outer side of the bag filter cartridge 3. The air outlet direction of the auxiliary jet pipes is inclined towards the outer side of the bag filter cartridge 3.

[0031] Based on the above structure, during use, the housing 1 is placed on top of the hopper (so that the housing 1 is connected to the hopper through the bottom opening), and the lower cavity is connected to the hopper. The negative pressure interface is connected to an external negative pressure device. During operation, a negative pressure environment is formed inside the housing 1 (upper cavity and lower cavity), causing the dust in the hopper to enter the lower cavity under the action of pressure difference. The airflow passes through the bag filter cartridge 3 for filtration, and the dust is trapped on the surface of the bag filter cartridge 3. When too much dust adheres to the surface of the bag filter cartridge 3, it is released through the main pulse tube 4 and the auxiliary pulse tube 5 to the bag filter. Compressed gas is sprayed into the inner side of the filter cylinder 3 (the main pulse tube 4 and the auxiliary pulse tube 5 can work simultaneously or sequentially according to a certain pattern). The high-pressure air from the inside of the filter cylinder 3 blows the dust adhering to the surface of the filter cylinder 3 into the pre-set dust collection hopper below. Meanwhile, the high-pressure air from the outside of the filter cylinder 3 is blown obliquely (from top to bottom) toward the outer surface of the filter cylinder 3, which can blow away the impurities that are more firmly adhered to the surface of the filter cylinder 3, thereby improving the self-cleaning efficiency and achieving the purpose of dust collection.

[0032] like Figure 1 and Figure 2 As shown, the self-cleaning mechanism includes an air supply device 7. The main pulse tube 4 and the auxiliary pulse tube 5 are both connected to the air supply device 7. Compressed gas is supplied to the main pulse tube 4 and the auxiliary pulse tube 5 through the air supply device 7. The air supply device 7 can be an air tank or the like. Furthermore, pulse valves are installed on both the main pulse tube 4 and the auxiliary pulse tube 5. The conduction of the main pulse tube 4 and the auxiliary pulse tube 5 is controlled by the pulse valves, etc. PLC controllers can regularly input pulse signals to the pulse valves, so that the main pulse tube 4 and the auxiliary pulse tube 5 clean the bag filter cartridge 3 according to a certain pattern.

[0033] like Figure 1As shown, to further improve the self-cleaning effect, the auxiliary blow pipe includes a ring pipe 8, which is annular and sleeved on the outside of the bag filter cartridge 3. The ring pipe 8 is connected to the auxiliary pulse pipe 5. Several air outlet pipes 9 are provided on the ring pipe 8. The air outlet direction of the air outlet pipes 9 is inclined (in this embodiment, the air outlet pipes 9 are inclined from top to bottom towards the outside of the bag filter cartridge 3) to the outside of the bag filter cartridge 3. In this way, the compressed gas is distributed to several air outlet pipes 9 through the ring pipe 8 to blow on different positions of the bag filter cartridge 3 in the circumferential direction, thereby reducing the blowing dead angle. The several air outlet pipes 9 are optimally evenly distributed in a circle in the circumferential direction of the bag filter cartridge 3. Furthermore, the auxiliary blow pipe includes multiple ring pipes 8 arranged sequentially from top to bottom. That is to say, the air outlet pipes 9 are arranged in multiple layers to ensure that different height positions on the outside of the bag filter cartridge 3 have a better cleaning effect.

[0034] like Figure 2 As shown, in order to improve the dust removal effect, several bag filter cartridges 3 are arranged in multiple rows in the horizontal direction, and each row of filter cartridges 3 is equipped with a main pulse tube 4 and an auxiliary pulse tube 5. That is to say, each main pulse tube 4 or each auxiliary pulse tube 5 outputs high-pressure air to several bag filter cartridges 3 respectively, so as to ensure that the pressure of the high-pressure air blown to the bag filter cartridges 3 is large enough to ensure a better cleaning effect.

[0035] like Figure 1 As shown, in order to facilitate disassembly and maintenance of the interior of the housing 1, an upper cover plate 10 is provided on the top of the upper cavity of the housing 1, and the upper cover plate 9 is fixed to the housing 1 by bolts. The upper cover plate 10 can be removed by turning the bolts to carry out maintenance of the interior of the housing 1.

[0036] A further optimization involves installing a weighing sensor at the partition plate 2. The partition plate 2 is movably installed inside the housing 1. The weighing sensor weighs the partition plate 2. When there is a lot of dust on the bag filter cartridge 3 installed on the partition plate 2, the weighing sensor detects that the weight of the partition plate is too large and exceeds the preset value. Then, the self-cleaning mechanism cleans the bag filter cartridge 3.

[0037] In summary, during use, the housing 1 is placed on top of the hopper, with the lower cavity connected to the hopper, and the negative pressure interface is connected to an external negative pressure device. During operation, a negative pressure environment is formed inside the housing 1, causing the dust in the hopper to enter the lower cavity under the action of pressure difference. The airflow passes through the filter cartridge 3 for filtration, and the dust is trapped on the surface of the filter cartridge 3. When too much dust adheres to the surface of the filter cartridge 3, compressed gas is sprayed into the inner side of the filter cartridge 3 through the main pulse pipe 4 and the auxiliary pulse pipe 5. The high-pressure air from the inside of the filter cartridge 3 blows the dust adhering to the surface of the filter cartridge 3 into the pre-set dust collection hopper below, while the high-pressure air from the outside of the filter cartridge 3 is blown obliquely towards the outer surface of the filter cartridge 3, which can blow away the more firmly adhered impurities from the surface of the filter cartridge 3, improving the self-cleaning efficiency and achieving the purpose of dust collection.

[0038] The above are merely preferred embodiments of this application, and the present invention is not limited to the above embodiments. It is understood that other improvements and variations that can be directly derived or conceived by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included within the protection scope of the present invention.

Claims

1. A self-cleaning dust collector, characterized in that, include: The housing (1) and the self-cleaning mechanism are provided. The housing (1) is provided with a partition plate (2), which divides the interior of the housing (1) into two cavities, namely an upper cavity and a lower cavity. The upper cavity is located above the partition plate (2), and the lower cavity is located below the partition plate (2). The housing (1) is provided with a negative pressure interface that communicates with the upper cavity. The bottom of the housing (1) is set as an opening. The partition plate (2) is provided with a plurality of cloth bag filter cylinders (3), and the open ends of the plurality of cloth bag filter cylinders (3) are all in communication with the upper cavity; The self-cleaning mechanism includes a main pulse tube (4) and an auxiliary pulse tube (5). The main pulse tube (4) is provided with a plurality of main jet pipes (6). The plurality of main jet pipes (6) extend to the inner side of the bag filter cartridge (3). The auxiliary pulse tube (5) is provided with a plurality of auxiliary jet pipes. The plurality of auxiliary jet pipes are located in the lower cavity and are located on the outer side of the plurality of bag filter cartridges (3). The air outlet direction of the auxiliary jet pipes is inclined towards the outer side of the bag filter cartridge (3).

2. The self-cleaning dust collector according to claim 1, characterized in that: The self-cleaning mechanism includes an air supply device (7), and the main pulse tube (4) and the auxiliary pulse tube (5) are both connected to the air supply device (7).

3. A self-cleaning dust collector according to claim 2, characterized in that: Both the main pulse tube (4) and the auxiliary pulse tube (5) are equipped with pulse valves.

4. A self-cleaning dust collector according to claim 1, characterized in that: The auxiliary jet pipe includes a ring pipe (8), which is annular and is sleeved on the outside of the bag filter cylinder (3). The ring pipe (8) is connected to the auxiliary pulse pipe (5). Several air outlet pipes (9) are provided on the ring pipe (8), and the air outlet direction of the air outlet pipes (9) is inclined to the outside of the bag filter cylinder (3).

5. A self-cleaning dust collector according to claim 4, characterized in that: The auxiliary jet pipe includes multiple ring pipes (8) arranged sequentially from top to bottom.

6. A self-cleaning dust collector according to claim 4, characterized in that: Several of the aforementioned air outlet pipes (9) are evenly distributed around the circumference.

7. A self-cleaning dust collector according to claim 1, characterized in that: Several of the bag filter cartridges (3) are arranged in multiple rows in the horizontal direction, and each row of filter cartridges (3) is provided with a main pulse tube (4) and an auxiliary pulse tube (5).

8. A self-cleaning dust collector according to claim 1, characterized in that: The housing (1) has an upper cover plate (10) on the top of the upper cavity.

9. A self-cleaning dust collector according to claim 8, characterized in that: The upper cover plate (10) is fixed to the housing (1) by bolts.

10. A self-cleaning dust collector according to claim 1, characterized in that: A weighing sensor is provided at the partition plate (2).

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