Bag type dust collector

Abstract

The utility model discloses a bag type dust collector, which belongs to the technical field of dust collection equipment and comprises a support main body, a dust collection component and a dust storage component. Wherein a containing space is formed in the supporting main body, an air inlet and an air outlet are formed in the supporting main body, and the air inlet and the air outlet are respectively communicated with the containing space; the dust removal assembly is arranged in the containing space and comprises a pulse module, a filter bag and a back flushing module, the outer surface of the filter bag can adsorb dust in dusty gas, the pulse module is connected with the filter bag, and the pulse module can inflate or exhaust the filter bag to enable the filter bag to expand or contract, so that the dust on the surface of the filter bag is shaken off; the backflushing module can blow air to the filter bag, so that dust on the outer surface of the filter bag is blown off; the dust storage assembly is arranged at the bottom of the supporting main body, a dust storage space is formed in the dust storage assembly, the dust storage space is communicated with the containing space, the dust storage assembly is used for storing dust falling from the filter bag, and the dust removal efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal equipment, in particular to a bag dust collector. Background Art

[0002] In various industrial production processes, especially in cement manufacturing, steel production, power generation and other fields, the purification of dusty gases is an essential link to ensure the compliance of environmental standards and the health and safety of workers. Bag dust collectors, as an efficient dust collection device, play an important role in removing fine particles. Bag dust collectors mainly capture dust particles through filter bags, and the removal device regularly cleans the filter bags to maintain their efficiency.

[0003] However, there are some limitations in the design of traditional bag filters. One of the main problems is that during the blowing and cleaning process of the filter bag, the bottom of the filter bag is far away from the filter bag opening, resulting in poor cleaning effect at the bottom, making it easy for dust to accumulate at the bottom of the filter bag and difficult to be effectively removed, thus affecting the service life and dust removal efficiency of the entire filter bag. In addition, the accumulation of dust at the bottom will increase the energy consumption of the entire system, and stronger blowing force is required to clear the clogged filter bag. Utility Model Content

[0004] The utility model aims to provide a bag dust collector to solve the technical problem of low dust removal efficiency of bag dust collectors in the prior art.

[0005] As conceived above, the technical solution adopted by the utility model is:

[0006] A bag dust collector, comprising:

[0007] A supporting body, wherein a containing space is formed inside the supporting body, and an air inlet and an air outlet are provided on the supporting body, wherein the air inlet and the air outlet are respectively connected to the containing space;

[0008] A dust removal component, the dust removal component is arranged in the accommodating space, the dust removal component includes a pulse module, a filter bag and a recoil module, the outer surface of the filter bag can absorb dust in the dust-containing gas, the pulse module is connected to the filter bag, the pulse module can inflate or exhaust the filter bag to make the filter bag expand or contract, thereby shaking off the dust on the surface of the filter bag, and the recoil module can blow air to the filter bag, thereby blowing off the dust on the outer surface of the filter bag;

[0009] An ash storage component is arranged at the bottom of the supporting body. An ash storage space is formed inside the ash storage component. The ash storage space is connected to the accommodating space. The ash storage component is used to store dust dropped from the filter bag.

[0010] Preferably, the recoil module comprises an air duct and a recoil nozzle, each of the air ducts is provided with a plurality of the recoil nozzles, the recoil nozzles are connected to the air duct, and the air outlet end of the recoil nozzle is aligned with the lower part of the filter bag.

[0011] Preferably, four air guide tubes are provided, and the four air guide tubes are arranged in a rectangular shape.

[0012] Preferably, the recoil module also includes an electromagnetic steering valve, which is arranged on the air duct. The two air ducts arranged opposite to each other are grouped in pairs, namely a first duct group and a second duct group. The electromagnetic steering valve can selectively control the connection or disconnection of the first duct group or the second duct group.

[0013] Preferably, the backflushing nozzle is designed as a Laval tube.

[0014] Preferably, the dust removal assembly comprises a skeleton cage, the skeleton cage is connected to the pulse module, and the filter bag is coated on the skeleton cage.

[0015] Preferably, the cross-sectional area of ​​the skeleton cage along the axial direction gradually decreases from top to bottom.

[0016] Preferably, the ash storage assembly includes a connecting bin and a storage bin, the connecting bin extends in an inverted trapezoidal shape, one end of the connecting bin with a larger cross-section is connected to the supporting body, and one end of the connecting bin with a smaller area is connected to the storage bin, and the storage bin is used to store dust.

[0017] Preferably, the pulse module includes a pump air part and a plurality of connecting pipes, the air outlet end of the pump air part is connected to the connecting pipes, and a plurality of filter bags are arranged corresponding to each of the connecting pipes, and the plurality of filter bags are arranged at intervals along the extension direction of the connecting pipes.

[0018] Preferably, the pulse module comprises a vibrating member, and the vibrating member can drive the filter bag to vibrate.

[0019] Beneficial effects of the utility model:

[0020] The bag-type dust collector proposed by the utility model provides necessary space for the dust removal component by forming a storage space inside the supporting body, ensuring that the filter bag can be fully unfolded and maximizing its dust removal area. The setting of the air inlet and the air outlet ensures that the dust-containing gas can efficiently enter the storage space, and after the dust is filtered out, the purified gas can be discharged smoothly. The design of the filter bag enables its outer surface to efficiently adsorb dust particles in the dust-containing gas. The filter bag is periodically inflated or evacuated by the pulse module to expand or contract the filter bag, which can effectively shake off the dust attached to the surface of the filter bag, and has a high cleaning efficiency; in addition, the recoil module further helps to remove the dust on the outer surface of the filter bag by blowing air into the filter bag, preventing some dust from being unable to fall off only by the force of the pulse module, and further improving the dust removal effect. The dust storage component is located at the bottom of the supporting body, and is used to collect dust falling from the filter bag, so as to facilitate centralized treatment and regular cleaning of the dust, and also avoid secondary lifting of the dust, thereby ensuring the cleanliness of the working environment and the stable operation of the dust removal system. The bag dust collector provided by the embodiment of the utility model has a higher dust removal efficiency through the coordinated cooperation between the supporting body, the dust removal component and the dust storage component. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a bag dust collector provided by an embodiment of the utility model;

[0022] Figure 2 It is a perspective view of a bag dust collector provided by an embodiment of the utility model;

[0023] Figure 3 It is a schematic diagram of the structure of the dust removal assembly provided by an embodiment of the utility model;

[0024] Figure 4 It is a schematic diagram of the structure of the filter bag provided by the embodiment of the utility model;

[0025] Figure 5 It is a schematic diagram of the structure of the skeleton cage provided by the embodiment of the utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the recoil module provided in the embodiment of the utility model. Figure 1 ;

[0027] Figure 7 This is a schematic diagram of the structure of the recoil module provided in the embodiment of the utility model. Figure 2 .

[0028] In the figure:

[0029] 100, first catheter group; 200, second catheter group;

[0030] 10. Support body; 11. Air inlet; 12. Air outlet;

[0031] 20. Dust removal assembly; 21. Pulse module; 211. Pump air unit; 212. Connecting pipe; 22. Filter bag; 23. Frame cage; 24. Recoil module; 241. Air guide pipe; 242. Recoil nozzle; 243. Solenoid steering valve;

[0032] 30. Ash storage component; 31. Connection bin; 32. Storage bin. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0037] See also Figure 1 and Figure 2The bag dust collector provided by the embodiment of the utility model includes a supporting body 10, a dust removal assembly 20 and an ash storage assembly 30. Among them, a accommodating space is formed inside the supporting body 10, and an air inlet 11 and an air outlet 12 are provided on the supporting body 10, and the air inlet 11 and the air outlet 12 are respectively connected to the accommodating space; the dust removal component 20 is arranged in the accommodating space, and the dust removal component 20 includes a pulse module 21, a filter bag 22 and a recoil module 24, the outer surface of the filter bag 22 can adsorb dust in the dust-containing gas, the pulse module 21 is connected to the filter bag 22, the pulse module 21 can inflate or exhaust the filter bag 22 to make the filter bag 22 expand or contract, thereby shaking off the dust on the surface of the filter bag 22, and the recoil module 24 can blow air to the filter bag 22, thereby blowing off the dust on the outer surface of the filter bag 22; the ash storage component 30 is arranged at the bottom of the supporting body 10, and an ash storage space is formed inside the ash storage component 30, and the ash storage space is connected to the accommodating space, and the ash storage component 30 is used to store dust fallen from the filter bag 22.

[0038] The accommodation space formed inside the supporting body 10 provides the necessary space for the dust removal assembly 20, ensuring that the filter bag 22 can be fully unfolded to maximize its dust removal area. The setting of the air inlet 11 and the air outlet 12 ensures that the dust-containing gas can efficiently enter the accommodation space, and after the dust is filtered out, the purified gas can be discharged smoothly. The design of the filter bag 22 enables its outer surface to efficiently adsorb dust particles in the dust-containing gas. The filter bag 22 is periodically inflated or evacuated by the pulse module 21 to expand or contract the filter bag 22, which can effectively shake off the dust attached to the surface of the filter bag 22, and has a high cleaning efficiency; in addition, the recoil module 24 further helps to remove the dust on the outer surface of the filter bag 22 by blowing air into the filter bag 22, preventing some dust from being unable to fall off by the force of the pulse module 21 alone, further improving the dust removal effect. The dust storage assembly 30 is located at the bottom of the support body 10 and is used to collect dust dropped from the filter bag 22, so as to facilitate centralized treatment and regular cleaning of dust, and also avoid secondary raising of dust, thereby ensuring the cleanliness of the working environment and the stable operation of the dust removal process. The bag dust collector provided by the embodiment of the utility model has a high dust removal efficiency through the coordinated cooperation between the support body 10, the dust removal assembly 20 and the dust storage assembly 30.

[0039] Generally speaking, the supporting body 10 and the ash storage assembly 30 are arranged along the vertical direction. For the convenience of description in conjunction with the drawings, the directions below are described in the directions shown in the drawings, but are not limited thereto.

[0040] The support body 10 is a rectangular metal frame, which is convenient for processing and production and has a high space utilization rate. Among them, the air outlet 12 is arranged at the upper part of the support body 10, and the air inlet 11 is arranged at the lower part of the support body 10. Since the density of the dust-containing gas is high and the weight is large, when the dust-containing gas enters the support body 10, it will gather in the lower part of the accommodating space. The air outlet 12 is arranged at the upper part of the support body 10 to prevent the dust-containing gas from flowing out of the air outlet 12 before the dust is removed. In addition, the air inlet 11 is arranged at the lower part, so that the dust-containing gas entering the accommodating space is closer to the ash storage component 30 at the bottom, reducing the flow distance of the dust and preventing the dust from spreading. After the dust removal, the dust-containing gas becomes lighter and flows to the top of the accommodating space, so as to flow out from the air outlet 12.

[0041] See also Figures 3 to 5 Regarding the dust removal assembly 20, the dust removal assembly 20 includes a skeleton cage 23, the skeleton cage 23 is connected to the pulse module 21, and the filter bag 22 is coated on the skeleton cage 23. The skeleton cage 23 provides a support structure for the filter bag 22, ensuring that the filter bag 22 can maintain a proper shape and stability under various working conditions, such as high airflow pressure or backwashing cleaning process. The filter bag 22 can be prevented from being deformed or damaged due to excessive pressure, thereby ensuring the continuous operation and effective filtration of the filter bag 22.

[0042] Specifically, since the bottom of the filter bag 22 is far away from the inflation end of the pulse module 21, the inflation effect of the upper middle part of the filter bag 22 is good, and the inflation effect of the lower part is poor, resulting in a good cleaning effect in the upper middle part of the filter bag 22, and difficult cleaning in the lower part. Therefore, the cross-sectional area of ​​the skeleton cage 23 along the axial direction gradually decreases from top to bottom. Since the filter bag 22 is covered on the skeleton cage 23, the cross-sectional area of ​​the filter bag 22 also gradually decreases from top to bottom, thereby reducing the gas demand at the lower part of the filter bag 22, increasing the gas use efficiency at the upper middle part of the filter bag 22, and optimizing the dust removal effect of the filter bag 22. Specifically, in this embodiment, the skeleton cage 23 includes a first cylinder and a second cylinder, the first cylinder and the second cylinder are integrally formed and coaxially arranged, the second cylinder is located at the bottom of the first cylinder and the outer diameter of the second cylinder is smaller than the outer diameter of the first cylinder, so that the filter bag 22 wrapped around the outer periphery of the skeleton cage 23 is arranged in a closing type that gradually decreases from top to bottom, thereby improving the utilization rate of the upper part of the filter bag 22. When the pulse module 21 is spraying, the gas demand at the lower part of the filter bag 22 is reduced, thereby improving the dust removal effect. In addition, overall, the amount of gas required for the entire filter bag 211 is reduced, thereby reducing the material fatigue of the filter bag 22 and achieving the effect of increasing the service life. In other embodiments, the skeleton cage 23 can also be set to an inverted cone or other structure, which will not be repeated here. It only needs to ensure that the gas demand at the lower part of the filter bag 22 can be reduced, and no limitation is made here.

[0043] See also Figure 6and Figure 7 Regarding the pulse module 21, the pulse module 21 includes a pump air part 211 and a plurality of connecting pipes 212. The gas outlet end of the pump air part 211 is connected to the connecting pipe 212. A plurality of filter bags 22 are arranged corresponding to each connecting pipe 212. The plurality of filter bags 22 are arranged at intervals along the extension direction of the connecting pipe 212. The pump air part 211 provides a uniform airflow to the connecting pipe 212 to ensure that each filter bag 22 can receive an appropriate amount of gas, which helps to balance the workload of each filter bag 22 and prevent the filter bag 22 from being worn prematurely due to local overload. The filter bags 22 on each connecting pipe 212 are arranged at intervals to facilitate maintenance, replacement or cleaning, thereby improving the dust removal efficiency. The number of connecting pipes 212 and the number of filter bags 22 arranged on each connecting pipe 212 are not limited here, and can be adaptively adjusted according to actual working conditions. In this embodiment, the pulse module 21 uses existing mechanical facilities, which are common mechanical equipment in the field. Its working principle and specific structure are not described here.

[0044] In addition, in order to prevent dust from sticking to the filter bag 22 and being difficult to shake off, the pulse module 21 includes a vibrating member that can drive the filter bag 22 to vibrate. The vibrating member can drive the entire surface of the filter bag 22 to vibrate, which helps to break up the dust adhering to the surface of the filter bag 22, break the adhesion between the dust and the filter bag 22, and make the dust easier to be shaken off, thereby improving the cleaning efficiency. In this embodiment, the vibrating member is a vibration motor, and the output end of the vibration motor is connected to the skeleton cage 23, thereby driving the filter bag 22 to vibrate. It can be understood that the vibration motor is a common mechanical device in the field, and its working principle and specific structure are not described here.

[0045] Since the poor air filling effect at the bottom of the filter bag 22 leads to poor dust cleaning effect, in order to further improve the dust cleaning effect on the surface of the filter bag 22, the bag filter provided by the embodiment of the utility model includes a recoil module 24, which can blow air to the filter bag 22, thereby blowing off the dust on the outer surface of the filter bag 22. Specifically, the recoil module 24 includes an air duct 241 and a recoil nozzle 242, and each air duct 241 is provided with a plurality of recoil nozzles 242, the recoil nozzles 242 are connected to the air duct 241, and the air outlet end of the recoil nozzle 242 is aligned with the bottom of the filter bag 22. During use, the air duct 241 provides airflow to each recoil nozzle 242, and the recoil nozzle 242 sprays airflow, thereby blowing off the dust adhering to the outer surface of the filter bag 22. By aligning the air outlet end of the backflush nozzle 242 with the lower part of the filter bag 22, dust in the area of ​​the lower part of the filter bag 22 which is more difficult to clean can be effectively blown away, thereby improving the overall cleaning efficiency of the filter bag 22 and effectively preventing dust from accumulating at the bottom of the filter bag 22 due to gravity.

[0046] Specifically, four air ducts 241 are provided, and the four air ducts 241 are arranged in a rectangular shape. The air ducts 241 arranged in a rectangular shape are more adaptable to the rectangular support body 10, and have a higher space utilization rate and coverage area. In addition, the air ducts 241 arranged in a rectangular shape can more evenly distribute the airflow to various parts of the filter bag 22, which helps to ensure that all filter bags 22 can receive an appropriate amount of purge gas, thereby improving the cleaning efficiency of the entire system. In other embodiments, the arrangement of the air ducts 241 can also be adaptively adjusted according to the shape of the accommodating space. For example, in a cylindrical accommodating space, the air ducts 241 can also be arranged in a circular shape, which is not limited here.

[0047] More specifically, the backflushing module 24 also includes an electromagnetic steering valve 243, which is arranged on the air duct 241. The two air ducts 241 arranged opposite to each other form a group of two, namely the first duct group 100 and the second duct group 200. The electromagnetic steering valve 243 can selectively control the connection or disconnection of the first duct group 100 or the second duct group 200. The electromagnetic steering valve 243 is used to control the alternating soot blowing of the first duct group 100 and the second duct group 200. The soot blowing on both sides of the filter bag 22 can be evenly stressed by the two oppositely arranged air ducts 241. In addition, the blowing forces of adjacent air ducts 241 can be avoided from being offset, thereby achieving better soot blowing efficiency. The electromagnetic steering valve 243 uses existing mechanical equipment, and its working principle and specific steps are not described in detail here.

[0048] In addition, the recoil nozzle 242 is designed as a Laval tube. The front half of the Laval tube shrinks from large to small to a narrow throat in the middle, and then expands from small to large and outward to the bottom of the arrow after the narrow throat. The gas in the arrow body flows into the front half of the nozzle under high pressure, and escapes from the back half after passing through the narrow throat. This structure can change the speed of the airflow due to the change of the spray cross-sectional area, so that the airflow changes from subsonic to sonic, and then accelerates to supersonic speed, thereby accelerating the airflow, so that the airflow ejected from the air outlet of the recoil nozzle 242 has higher kinetic energy, which helps to shake off and remove stubborn dust attached to the surface of the filter bag 22, thereby improving the cleaning efficiency. The Laval tube is an existing mechanical structure in the field, and its working principle and specific steps are not described here.

[0049] See also Figure 1 and Figure 2Regarding the ash storage assembly 30, the ash storage assembly 30 includes a connecting bin 31 and a storage bin 32. The connecting bin 31 extends in an inverted trapezoidal shape. The end of the connecting bin 31 with a larger cross-section is connected to the support body 10, and the end of the connecting bin 31 with a smaller area is connected to the storage bin 32. The storage bin 32 is used to store dust. The inverted trapezoidal design of the connecting bin 31 helps to smoothly guide the dust shaken off the filter bag 22 to the storage bin 32. The end with a larger cross-section is connected to the support body 10 to ensure that dust is received from a larger area of ​​the filter area, while the end with a smaller area is connected to the storage bin 32 to prevent dust from splashing and dissipating during movement. In other embodiments, the connecting bin 31 can also be set to an inverted cone, an inverted triangle, etc., which is not limited here.

[0050] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A bag dust collector, characterized in that: include: A support body (10), wherein a housing space is formed inside the support body (10), and an air inlet (11) and an air outlet (12) are provided on the support body (10), wherein the air inlet (11) and the air outlet (12) are respectively connected to the housing space; A dust removal component (20), the dust removal component (20) being arranged in the accommodating space, the dust removal component (20) comprising a pulse module (21), a filter bag (22) and a recoil module (24), the outer surface of the filter bag (22) being capable of absorbing dust in dust-containing gas, the pulse module (21) being connected to the filter bag (22), the pulse module (21) being capable of inflating or exhausting air to the filter bag (22) so as to expand or contract the filter bag (22), thereby shaking off dust on the surface of the filter bag (22), and the recoil module (24) being capable of blowing air to the filter bag (22), thereby blowing off dust on the outer surface of the filter bag (22); An ash storage component (30) is arranged at the bottom of the supporting body (10), and an ash storage space is formed inside the ash storage component (30). The ash storage space is connected to the accommodating space, and the ash storage component (30) is used to store dust that falls from the filter bag (22).

2. The bag filter according to claim 1, characterized in that: The backflushing module (24) comprises an air duct (241) and a backflushing nozzle (242), each of the air ducts (241) being provided with a plurality of the backflushing nozzles (242), the backflushing nozzles (242) being connected to the air duct (241), and the air outlet end of the backflushing nozzle (242) being aligned with the lower part of the filter bag (22).

3. The bag filter according to claim 2, characterized in that: Four air guide tubes (241) are provided, and the four air guide tubes (241) are arranged in a rectangular shape.

4. The bag filter according to claim 3, characterized in that: The recoil module (24) further comprises an electromagnetic steering valve (243), wherein the electromagnetic steering valve (243) is arranged on the air guide tube (241), and two oppositely arranged air guide tubes (241) form a group of two, namely a first conduit group (100) and a second conduit group (200), and the electromagnetic steering valve (243) can selectively control the connection or disconnection of the first conduit group (100) or the second conduit group (200).

5. The bag filter according to claim 2, characterized in that: The backflushing nozzle (242) is designed as a Laval tube.

6. The bag filter according to claim 1, characterized in that: The dust removal component (20) comprises a skeleton cage (23), the skeleton cage (23) is connected to the pulse module (21), and the filter bag (22) is coated on the skeleton cage (23).

7. The bag filter according to claim 6, characterized in that: The cross-sectional area of ​​the skeleton cage (23) along the axial direction gradually decreases from top to bottom.

8. The bag filter according to any one of claims 1 to 7, characterized in that: The dust storage assembly (30) comprises a connecting bin (31) and a storage bin (32); the connecting bin (31) extends in an inverted trapezoidal shape; an end of the connecting bin (31) with a larger cross-section is connected to the supporting body (10); an end of the connecting bin (31) with a smaller area is connected to the storage bin (32); and the storage bin (32) is used to store dust.

9. The bag filter according to any one of claims 1 to 7, characterized in that: The pulse module (21) comprises an air pump part (211) and a plurality of connecting pipes (212); an air outlet end of the air pump part (211) is connected to the connecting pipe (212); a plurality of filter bags (22) are arranged corresponding to each of the connecting pipes (212); and the plurality of filter bags (22) are arranged at intervals along an extension direction of the connecting pipe (212).

10. The bag filter according to any one of claims 1 to 7, characterized in that: The pulse module (21) comprises a vibrating member, and the vibrating member can drive the filter bag (22) to vibrate.

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