Spinning pulse dust cleaning device

Abstract

The utility model relates to the technical field, in particular to a self-rotating type pulse dust cleaning device which comprises a back-blowing airflow guiding module and a positioning ring, the section shape of the positioning ring is matched with a filter cartridge in dust removal equipment, the positioning ring is fixedly connected to the upper surface of the filter cartridge, and the back-blowing airflow guiding module is fixedly connected with the positioning ring. When the dust removal equipment stops working, the pulse blowback device is started, high-pressure airflow in the vertical direction is released to the filter cartridge, and the self-rotating pulse dust removal device can play roles in dispersing, guiding and energy conversion on the axial high-pressure airflow, so that the high-pressure airflow is uniformly distributed on the inner wall of the filter cartridge, and the dust removal efficiency is improved. The dust removal device has the characteristic that the dust removal efficiency of the filter cartridge is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the ash cleaning technology of dust removal equipment, in particular to a self-rotation type pulse ash cleaning device. BACKGROUND

[0002] The pulse back blowing device in the dust removal equipment is a core component of a gas-solid separation system, and is commonly used in industrial flue gas treatment, dust recovery and other environmental purification scenes.

[0003] In the related art, the high-pressure gas pocket and the electromagnetic valve group of the pulse back blowing device are located directly above the dust removal equipment box body and are integrated inside a vertically arranged air path pipeline. The pulse back blowing device is mainly based on the principle of fluid dynamics, and through accurate control of the opening and closing of the pulse valve, the high-speed injection of compressed air is used to effectively remove the dust adhered to the filter cartridge during the operation of the dust removal equipment.

[0004] However, the existing pulse back blowing device has the following problems: the ash cleaning method relying solely on air pressure impact cannot completely clean the dust in the dead corners of the filter cartridge and the fine dust or sticky dust on the filter paper layer outside the filter cartridge, and the ash cleaning efficiency is poor. SUMMARY

[0005] In order to improve the ash cleaning efficiency of the pulse back blowing device, the application provides a self-rotation type pulse ash cleaning device.

[0006] The self-rotation type pulse ash cleaning device provided by the application adopts the following technical scheme:

[0007] A self-rotation type pulse ash cleaning device, comprising: a back blowing air flow guiding module and a positioning ring, the cross-sectional shape of the positioning ring is matched with a filter cartridge in a dust removal equipment, the positioning ring is fixedly connected to the upper surface of the filter cartridge, the back blowing air flow guiding module is fixedly connected with the positioning ring, the back blowing air flow guiding module is coaxially arranged with the positioning ring and located inside the filter cartridge, and the back blowing air flow guiding module improves the ash cleaning efficiency of the pulse back blowing device for the filter cartridge in cooperation with the positioning ring.

[0008] By adopting the above scheme, the back blowing air flow guiding module is installed on the central axis inside the filter cartridge and directly below the pulse back blowing device. The back blowing air flow guiding module can directly contact the high-pressure air flow from the pulse back blowing device and guide the high-pressure air flow to clean the dust in the dead corners inside the filter cartridge and the fine dust or sticky dust on the filter paper layer outside the filter cartridge, thereby improving the ash cleaning efficiency.

[0009] Preferably, the back blowing air flow guiding module comprises a flow guide plate, the flow guide plate is located in the middle part of the positioning ring, an arc-shaped guiding surface is arranged on the flow guide plate, and the arc-shaped guiding surface has a trend of being high in the middle and low at the four corners.

[0010] By adopting the above scheme, the arc-shaped guide surface, which is high in the middle and low around the edges, optimizes the diffusion angle of the airflow, allowing the high-pressure airflow to diffuse evenly to the entire inner wall of the filter cartridge. At the same time, the guiding effect of the arc-shaped guide surface also reduces the energy loss generated by the high-pressure airflow during diffusion, thereby reducing the energy consumption of the dust removal equipment.

[0011] Preferably, the backflush airflow guiding module further includes a rotating impeller and a jet bend. The bottom of the guide plate is provided with a receiving groove. One end of the rotating impeller and the jet bend are built into the receiving groove. One end of the jet bend is fixed to the rotating impeller. The groove opening is covered by a bottom plate. The rotating impeller is rotatably supported on the upper surface of the bottom plate. An opening is provided at the geometric center of the bottom plate. The other end of the jet bend passes through the opening, first bends horizontally, and then extends along the axial direction of the filter cartridge.

[0012] By adopting the above solution, the backflush airflow guiding module is given a closed structure, reducing the influence of external airflow. The rotating impeller can drive the spray bend to rotate while spraying through mechanical linkage with the spray bend, so that the airflow sprayed by the spray bend covers the internal area of ​​the filter cartridge.

[0013] Preferably, the side wall of the guide plate is also provided with an air inlet, the air inlet is connected to the receiving groove, an air inlet pipe is connected to the outside of the air inlet, one end of the air inlet pipe is fixedly connected to the air inlet through an elbow, and the other end of the air inlet pipe is connected to the pulse valve of the pulse backflushing device. The pulse backflushing device drives the rotating impeller through the air inlet pipe to drive the jet bend pipe to rotate.

[0014] By adopting the above scheme, the pulse backflushing device provides an additional independent air source through the air inlet pipe to impact the rotating impeller, drive the rotating impeller to rotate on the upper surface of the base plate, and drive the jet bend to rotate, so as to further clean the inside of the filter cartridge.

[0015] Preferably, the top end of the blow-bend pipe is provided with an air inlet, the air inlet is connected to the receiving groove, the surface of the blow-bend pipe is evenly distributed with inclined micropores, and the bottom end of the blow-bend pipe is closed.

[0016] By adopting the above scheme, when the blow tube rotates, the airflow forms a periodic tangential impact force through the inclined micro-holes. Combined with the intermittent blowing of the pulse valve, the surface of the filter paper layer vibrates at a high frequency, thereby reducing the adhesion of dust to the filter paper layer.

[0017] Preferably, the sidewall of the base plate extends downward to form a serrated noise reduction structure.

[0018] By adopting the above scheme, the serrated structure extending from the side wall of the base plate can increase the contact area between the turbulence generated by the pulse backflushing device and the outside air, thereby reducing turbulence and achieving the effect of noise reduction.

[0019] Preferably, the sidewall of the guide plate is further provided with a plurality of connecting arms, the plurality of connecting arms including an upper support arm and a lower support arm, the upper support arm and the lower support arm being fixedly connected, and the included angle at the connection point being set at an obtuse angle, the upper support arm being connected to the positioning ring, the lower support arm being fixed to the guide plate, the backflushing airflow guiding module being connected to the positioning ring through the connecting arms and fixed on the central axis inside the filter cartridge, and descending a certain distance inside the filter cartridge.

[0020] By adopting the above solution, the connection strength between the backflush airflow guiding module and the positioning ring and the impact resistance to high-pressure airflow are improved. After the backflush airflow guiding module is buried inside the filter cartridge at a certain distance, it can better guide the high-pressure airflow to clean the inside of the filter cartridge, thereby extending the service life of the filter cartridge and reducing the cost of consumables.

[0021] Preferably, the upper surface of the positioning ring is provided with a plurality of screws, and each of the upper support arms is provided with an oblong hole, the oblong hole being adapted to the screws.

[0022] By adopting the above scheme, the hollow part of the inner ring of the positioning ring provides space for the backflush airflow guiding module. The upper support arm is positioned and sleeved on the screw through the waist-shaped hole. After the screw is screwed into the nut, the nut and the positioning ring clamp the upper and lower sides of the upper support arm. The waist-shaped hole also disperses stress by extending the contact surface with the screw, thereby improving the stability and durability of the upper support arm.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The backflush airflow guiding module can directly contact the high-pressure airflow from the pulse backflush device and guide the high-pressure airflow to clean the dead corners inside the filter cartridge and the fine dust or sticky dust on the filter paper layer outside the filter cartridge, thus improving the cleaning efficiency.

[0025] 2. It reduces energy loss during the diffusion process of high-pressure airflow, thereby reducing the energy consumption and material costs of dust removal equipment;

[0026] 3. The built-in noise reduction structure design reduces the noise generated by the dust removal equipment when it is backflushing to clean the inside of the equipment. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0028] Figure 2 This is a schematic diagram of the interaction between the embodiment of this application and the filter cartridge.

[0029] Figure 3 This is an exploded view of the backflush airflow guiding module in the embodiments of this application.

[0030] Figure 4 This is a schematic diagram of the cooperation between the rotating impeller and the jet bend in the embodiments of this application.

[0031] Figure 5 This is a schematic diagram showing the cooperation between the guide plate, the positioning ring, and the filter cartridge in the embodiments of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Positioning ring; 11. Screw; 2. Backflush airflow guiding module; 21. Guide plate; 211. Arc-shaped guide surface; 22. Air inlet; 23. Elbow; 24. Air inlet pipe; 25. Connecting arm; 251. Upper support arm; 252. Waist-shaped hole; 253. Lower support arm; 26. Base plate; 261. Extension section; 262. Noise reduction structure; 27. Receiving groove; 28. Rotating impeller; 29. ​​Jet bend pipe; 291. Air inlet; 292. Micro-hole. Detailed Implementation

[0033] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0034] This application discloses a spin-type pulse cleaning device. (Refer to...) Figures 1-2 It includes a backflush airflow guiding module 2 and a positioning ring 1. The cross-sectional shape of the positioning ring 1 is adapted to the filter cartridge in the dust removal equipment. The positioning ring 1 is fixedly connected to the upper surface of the filter cartridge. The backflush airflow guiding module 2 is fixedly connected to the positioning ring 1. The backflush airflow guiding module 2 is coaxially arranged with the positioning ring 1 and located inside the filter cartridge. The position of the backflush airflow guiding module 2 corresponds to the pulse backflush device.

[0035] Specifically, the backflush airflow guiding module 2 includes a guide plate 21, which is located in the middle of the positioning ring 1. An arc-shaped guiding surface 211 is integrally formed on the guide plate 21. In this embodiment, the diameter of the arc-shaped guiding surface 211 is 130mm, and it is set with a high center and low periphery. This setting can guide the high-pressure airflow to form a conical diffusion airflow field above the filter cartridge, thereby reducing the axial airflow pressure at the bottom of the filter cartridge and indirectly improving the durability of the filter cartridge.

[0036] Furthermore, the arc-shaped guide surface 211 evenly diffuses the high-pressure airflow to the entire inner wall of the filter cartridge. At the same time, the guiding effect of the arc-shaped guide surface 211 also reduces the energy loss generated by the high-pressure airflow during the diffusion process, thereby allowing the dust removal equipment to operate the pulse backflushing device with lower power and reducing the energy consumption of the equipment.

[0037] Furthermore, the guided high-pressure airflow forms a rotating vortex inside the filter cartridge, effectively flushing out the previously hard-to-reach dead zones inside the filter cartridge, accelerating the settling process of the detached dust, and reducing the occurrence of dust that has already been detached being re-adsorbed onto the inner wall surface of the filter cartridge during the cleaning process.

[0038] Furthermore, refer to Figures 3-4 The backflush airflow guiding module 2 also includes a rotating impeller 28 and a jet bend 29. In this embodiment, the rotating impeller 28 is provided with a total of six blades. Meanwhile, the bottom of the guide plate 21 is provided with a receiving groove 27. The groove opening of the receiving groove 27 is covered by a bottom plate 26. After the bottom plate 26 and the guide plate 21 are covered, a closed space is formed.

[0039] Correspondingly, one end of the rotating impeller 28 and the spray bend 29 is built into the receiving groove 27. One end of the spray bend 29 is fixed to the rotating impeller 28. The rotating impeller 28 is rotatably supported on the upper surface of the base plate 26. An opening is provided at the geometric center of the base plate 26. The other end of the spray bend 29 passes through the opening, first bends horizontally, and then extends along the axial direction of the filter cartridge.

[0040] Furthermore, the side wall of the guide plate 21 is also provided with an air inlet 22, which is connected to the receiving groove 27. An air inlet pipe 24 is connected to the outside of the air inlet 22. One end of the air inlet pipe 24 is fixedly connected to the air inlet 22 through an elbow 23, and the other end of the air inlet pipe 24 is connected to the pulse valve of the pulse backflush device.

[0041] Specifically, the pulse backflush device is connected to the air inlet pipe 24, which adds a driving air path to the backflush airflow guiding module 2. This driving air path is responsible for providing an additional independent air source to impact the rotating impeller 28, driving the rotating impeller 28 to rotate at a constant speed of 360° with the opening of the base plate 26 as the center on the upper surface of the base plate 26.

[0042] Furthermore, the rotating impeller 28, through mechanical linkage with the spray bend 29, drives the spray bend 29 to rotate simultaneously, in the same direction, and on the same axis. Since the receiving groove 27 is a closed space, the influence of external airflow on the rotating impeller 28 is reduced.

[0043] Meanwhile, the top of the blow-bend pipe 29 is provided with an air inlet 291, which is connected to the receiving groove 27. The surface of the blow-bend pipe 29 is evenly distributed with inclined micro-holes 292. In this embodiment, the hole diameter ranges from 1 to 2.5 mm, the inclination angle ranges from 15 to 45°, and the bottom end of the blow-bend pipe 29 is closed.

[0044] Therefore, with the cooperation of the rotating impeller 28, when the blow-bend pipe 29 rotates, the airflow enters the blow-bend pipe 29 from the air inlet 291 and is ejected from the inclined micro-holes 292. After the airflow is ejected obliquely from the micro-holes 292, it forms a periodic tangential impact force. Combined with the intermittent blowing of the pulse valve, the filter paper surface generates a high-frequency vibration of 100-500Hz, thereby reducing the adhesion of dust to the filter paper layer outside the filter cartridge. This achieves a composite dust removal mechanism of "guide surface + rotating blow-bend high-frequency vibration", improving the service life of the filter cartridge and the dust removal rate.

[0045] On the other hand, the sidewall of the base plate 26 extends downward to form a serrated noise reduction structure 262, which simulates the tail design of an aircraft engine blade. This structure design changes the energy distribution of the airflow by cutting large-scale vortices into small vortex groups, converting the low-frequency noise generated when the dust removal equipment performs backflushing cleaning into a relatively low-sensitivity high-frequency band, while reducing the sound pressure level intensity generated by the vortex rotation, thereby achieving the effect of noise reduction.

[0046] On the other hand, the side wall of the guide plate 21 is also provided with several connecting arms 25. In this example, there are three connecting arms 25. The included angle between the three connecting arms 25 is 120°. The connecting arm 25 includes an upper support arm 251 and a lower support arm 253. The upper support arm 251 and the lower support arm 253 are integrally formed and the included angle at the connection is obtuse.

[0047] Furthermore, the positioning ring 1 is designed in a circular shape. The hollow part of the inner ring of the positioning ring 1 provides space for the backflush airflow guiding device. Several screws 11 are also provided on the upper surface of the positioning ring 1. In this embodiment, a total of six screws 11 are provided. The six screws 11 are distributed in six equal parts on the positioning ring 1. The upper support arm 251 is provided with a waist-shaped hole 252 that matches the size of the screw 11.

[0048] Furthermore, after the screw 11 is screwed into the nut, the nut and the positioning ring 1 clamp the upper and lower surfaces of the upper support arm 251, and the waist-shaped hole 252 disperses stress by extending the contact surface with the screw 11, thereby improving the stability and durability of the upper support arm 251.

[0049] Therefore, the backflush airflow guiding module 2 is connected to the positioning ring 1 via the connecting arm 25 and fixed on the central axis inside the filter cartridge. It descends a certain distance inside the filter cartridge. In this embodiment, the distance from the bottom edge of the arc-shaped guiding surface 211 of the backflush airflow guiding module 2 to the upper surface of the positioning ring 1 is 58mm. After testing, it was found that after controlling the size and embedment depth of the arc-shaped guiding surface 211, the backflush airflow guiding module 2 can better guide the high-pressure airflow to clean the inside of the filter cartridge, thereby extending the service life of the filter cartridge and reducing the cost of consumables.

[0050] Furthermore, the lower support arm 253 and the side wall of the guide plate 21 are integrally formed, and the base plate 26 is provided with three extensions 261. The lower support arm 253 and the base plate 26 are connected by threads to complete the cover and closure of the guide plate 21 and the base plate 26, which improves the connection strength between the backflush airflow guiding module 2 and the positioning ring 1, as well as the impact resistance to high-pressure airflow.

[0051] Specifically, in the embodiments of this application, a spin-type pulse cleaning device can provide two working modes according to different cleaning needs. If the dust accumulation on the filter cartridge is small, refer to... Figure 5 The guide plate 21 and the positioning ring 1 in the device can be fixed on the central axis inside the filter cartridge. Through the guiding effect of the arc-shaped guide surface 211, the high-pressure airflow is evenly distributed on the inner wall of the filter cartridge, thereby cleaning the dust removal dead corner inside the filter cartridge.

[0052] Furthermore, if the filter cartridge has a large amount of dust accumulation, refer to... Figure 2 The device can be completely installed on the central axis inside the filter cartridge. While guiding the high-pressure airflow, the backflush airflow guide module 2 also converts the wind energy into kinetic energy applied to the filter paper layer outside the filter cartridge, accelerating the peeling off of fine dust or sticky dust attached to the filter paper layer, and further improving the dust removal efficiency of the filter cartridge.

[0053] The implementation principle of a spin-type pulse cleaning device in this application is as follows:

[0054] When the dust removal equipment stops working, the pulse backflushing device starts, releasing a vertical high-pressure airflow to the filter cartridge. The self-rotating pulse cleaning device is installed on the central axis inside the filter cartridge, which plays a role in dispersing, guiding and converting the axial high-pressure airflow. This ensures that the high-pressure airflow is evenly distributed on the inner wall of the filter cartridge and generates high-frequency vibration on the filter paper layer on the outside of the filter cartridge. This simultaneously cleans the cleaning dead corners inside the filter cartridge and the fine dust or sticky dust on the filter paper layer on the outside of the filter cartridge, thereby improving the cleaning efficiency of the filter cartridge.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A spin-type pulse cleaning device, characterized in that, The device includes a backflush airflow guiding module (2) and a positioning ring (1). The cross-sectional shape of the positioning ring (1) is adapted to the filter cartridge in the dust removal equipment. The positioning ring (1) is fixedly connected to the upper surface of the filter cartridge. The backflush airflow guiding module (2) is fixedly connected to the positioning ring (1). The backflush airflow guiding module (2) and the positioning ring (1) are coaxially arranged and located inside the filter cartridge. The backflush airflow guiding module (2) works with the positioning ring (1) to improve the dust removal efficiency of the pulse backflush device for the filter cartridge.

2. A spin type pulse ashing apparatus according to claim 1, wherein The backflow guiding module (2) includes a guide plate (21), which is located in the middle of the positioning ring (1). The guide plate (21) is provided with an arc-shaped guiding surface (211), which is high in the middle and low around the edges.

3. A spin type pulse ashing apparatus according to claim 2, wherein The backflush airflow guiding module (2) also includes a rotating impeller (28) and a jet bend (29). The bottom of the guide plate (21) is provided with a receiving groove (27). One end of the rotating impeller (28) and the jet bend (29) are built into the receiving groove (27). One end of the jet bend (29) is fixed to the rotating impeller (28). The groove opening of the receiving groove (27) is covered by a bottom plate (26). The rotating impeller (28) is rotatably supported on the upper surface of the bottom plate (26). An opening is provided at the geometric center of the bottom plate (26). The other end of the jet bend (29) passes through the opening, first bends horizontally, and then extends along the axial direction of the filter cartridge.

4. A spin-type pulse ashing apparatus according to claim 3, wherein The side wall of the guide plate (21) is also provided with an air inlet (22), which is connected to the receiving groove (27). An air inlet pipe (24) is connected to the air inlet (22). One end of the air inlet pipe (24) is fixedly connected to the air inlet (22) through an elbow (23). The other end of the air inlet pipe (24) is connected to the pulse valve of the pulse backflush device. The pulse backflush device drives the rotating impeller (28) through the air inlet pipe (24) to drive the spray bend pipe (29) to rotate.

5. A spin-type pulse dust cleaning device according to claim 4, wherein The top end of the blow pipe (29) is provided with an air inlet (291), which is connected to the receiving groove (27). The surface of the blow pipe (29) is evenly distributed with inclined micro-holes (292), and the bottom end of the blow pipe (29) is closed.

6. A spin type pulse ashing apparatus according to claim 3, wherein The sidewall of the base plate (26) extends downward to form a serrated noise reduction structure (262).

7. A spin type pulse ashing apparatus according to claim 5, wherein The side wall of the guide plate (21) is also provided with several connecting arms (25). The several connecting arms (25) include an upper support arm (251) and a lower support arm (253). The upper support arm (251) and the lower support arm (253) are fixedly connected, and the included angle at the connection point is set to an obtuse angle. The upper support arm (251) is connected to the positioning ring (1), and the lower support arm (253) is fixed to the guide plate (21). The backflush airflow guiding module (2) is connected to the positioning ring (1) through the connecting arms (25) and fixed on the central axis inside the filter cartridge, and descends a certain distance inside the filter cartridge.

8. A spin-type pulse dust cleaning device according to claim 7, wherein The upper surface of the positioning ring (1) is provided with a plurality of screw rods (11), and the upper supporting arms (251) are each provided with a waist-shaped hole (252) matched with the screw rods (11).

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