Pulse-jet self-cleaning multi-cyclone dust collector

Abstract

This utility model discloses a pulse-jet self-cleaning multi-tube dust collector, including an air inlet chamber, several cyclone separators, and a pulse-jet pipe. The air inlet chamber has a top plate and a lower support plate. The air guide pipes of the cyclone separators extend from the lower support plate to the top plate. The pulse-jet pipe includes a first pipe section, a second pipe section, and a nozzle. The first pipe section is arranged at the top of the air inlet chamber, and the second pipe section is arranged along the air guide pipe and on the leeward side of the air guide pipe. The top end of the second pipe section communicates with the first pipe section, and the bottom end of the second pipe section is bent and has the nozzle installed. In this utility model, the pulse-jet pipe has a long service life and provides minimal obstruction to the airflow at the inlet of the cyclone separators, thus reducing the impact of pulse-jet cleaning on the overall dust removal efficiency.

Description

Technical Field

[0001] This utility model relates to a multi-tube dust collector, belonging to the technical field of dust removal equipment. Background Technology

[0002] Multi-tube dust collectors utilize the principle of cyclone centrifugal separation for dust removal. The cyclone separator is installed inside the equipment's air inlet chamber. During operation, dust accumulates on the lower support plate of the air inlet chamber, requiring regular cleaning. To slow down dust accumulation on the support plate, the technical solution of Chinese Patent No. CN221451991U incorporates a second dust hopper and a vibrating second support plate above the original lower support plate in the air inlet chamber. The vibration of the second support plate further slows down dust accumulation. Furthermore, blowpipes are arranged along the second support plate at a distance above it, spraying air onto the second support plate to further delay dust accumulation.

[0003] However, during operation, the blowpipes of the above solution are easily eroded by high-concentration dust-laden airflow, resulting in a short service life. Furthermore, dust easily accumulates on the blowpipes and between the blowpipes and the second support plate, thus diminishing the dust accumulation mitigation effect. Additionally, the close proximity of the blowpipes to the second support plate obstructs airflow towards the cyclone separator, affecting overall dust removal efficiency. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model provides a pulse jet self-cleaning multi-tube dust collector, which solves the problems of short lifespan of the jet tubes and the impact on overall dust removal efficiency.

[0005] The technical solution of this utility model is as follows: A pulse jet self-cleaning multi-tube dust collector includes an air inlet chamber, several cyclone separators and a jet pipe. The air inlet chamber is provided with a top plate and a lower support plate. The air guide pipe of the cyclone separator extends from the lower support plate to the top plate. The jet pipe includes a first pipe section, a second pipe section and a nozzle. The first pipe section is arranged at the top of the air inlet chamber. The second pipe section is arranged along the air guide pipe and on the leeward side of the air guide pipe. The top end of the second pipe section is connected to the first pipe section. The bottom end of the second pipe section is bent and the nozzle is provided.

[0006] Furthermore, the first pipe section is provided with a corner guard plate on the windward side, and the corner opening of the corner guard plate faces away from the air inlet of the air inlet cavity, and the first pipe section is located at the corner opening.

[0007] Furthermore, in the horizontal direction, the angle between the blowing direction of the nozzle and the air intake direction of the air intake chamber is 30° to 40°.

[0008] Furthermore, the lower support plate is fixedly connected to the cyclone separator, a second support plate is stacked on the lower support plate, and several limiting posts are provided on the lower support plate. The second support plate passes through the limiting posts, and the limiting posts restrict the second support plate from detaching from the limiting posts. The second support plate is vibrated by a vibration generator, and a dust discharge hole corresponding to the inlet of the cyclone separator is opened on the second support plate.

[0009] Furthermore, adjacent air ducts form a dust removal channel, which extends along the air intake direction of the air inlet chamber. The dust removal channel is provided with a dust removal guide protrusion structure connected to the lower support plate or the second support plate. The dust removal guide protrusion structure has sloping surfaces on both sides of the air intake direction of the air inlet chamber.

[0010] Furthermore, the second pallet is composed of several sub-plates spliced ​​together, and the splice seams of the sub-plates are located below the dust removal guide protrusion structure.

[0011] Furthermore, a plurality of support tubes are provided between the second support plate and the lower support plate. The support tubes are sleeved on the limiting post. The different heights of the support tubes make the side of the second support plate closer to the air inlet of the air inlet cavity higher than the side farther from the air inlet cavity.

[0012] Furthermore, the dust collector is provided with a second ash hopper, the inlet of which is located in the air inlet chamber and on the side of the second support plate away from the air inlet of the air inlet chamber.

[0013] Compared with the prior art, the advantages of the technical solution provided by this utility model are as follows:

[0014] This invention places the first section of the blowpipe at the top of the air inlet chamber and the second section on the leeward side of the air guide pipe. The dust-laden airflow concentration at the top of the air inlet chamber is relatively low, resulting in weaker scouring of the first section. The second section is protected by the air guide pipe, extending the lifespan of the blowpipe. Most of the blowpipe's structure is located away from the cyclone separator inlet (cyclone tube inlet), minimizing obstruction to airflow at the cyclone separator inlet and reducing the impact of the blowpipe on the overall dust removal efficiency. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of a pulse jet self-cleaning multi-tube dust collector (excluding the second support plate) as an example.

[0016] Figure 2 The diagram shows the right-side view of the pulse jet self-cleaning multi-tube dust collector (excluding the second support plate) as an example.

[0017] Figure 3 A schematic diagram of the pulse jet self-cleaning multi-tube dust collector structure as shown in the embodiment.

[0018] Figure 4 This is a top view of the nozzle orientation of the pulse jet self-cleaning multi-tube dust collector used in this embodiment.

[0019] Figure 5 This is a front view structural schematic diagram of a pulse jet self-cleaning multi-tube dust collector (excluding the jet pipes) as an example.

[0020] Figure 6 The diagram shows the right-side view of the pulse jet self-cleaning multi-tube dust collector (excluding the jet pipes) as an example.

[0021] Figure 7 This is a partial schematic diagram of the second support plate setting position structure of the pulse jet self-cleaning multi-tube dust collector as an example.

[0022] Figure 8 This is a partial schematic diagram of the connection between the second support plate and the lower support plate of the pulse jet self-cleaning multi-tube dust collector as an example.

[0023] Figure 9 This is a partial structural diagram of the connection between the vibration generator and the second support plate of the pulse jet self-cleaning multi-tube dust collector as an example.

[0024] Figure 10 for Figure 6 A schematic diagram of the partial structure at point A in the middle. Detailed Implementation

[0025] The present invention will be further described below with reference to the embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. After reading this description, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0026] Please combine Figure 1 , Figure 2 As shown, the pulse-jet self-cleaning multi-tube dust collector of this embodiment includes an inlet chamber 1, an outlet chamber 2, and a first ash hopper 3. The outlet chamber 2 is located above the inlet chamber 1, and the two are separated by a top plate 101 of the inlet chamber 1, which is also commonly referred to as an upper support plate. The first ash hopper 3 is connected to the lower part of the inlet chamber 1, and the two are separated by a lower support plate 102. Multiple cyclone separators are installed in the pulse-jet self-cleaning multi-tube dust collector. The cyclone separators adopt the existing technology structure and include a cyclone tube 4 ( Figure 2 The diagram only shows a portion of the cyclone 4 and the air guide pipe 5. Figure 1(Represented only by lines) Cyclone 4 is mounted on the lower support plate 102. The top inlet of cyclone 4 is located in the air inlet chamber 1, and the bottom outlet of cyclone 4 is located in the first ash hopper 3. The lower end of the air guide pipe 5 is inserted into cyclone 4 from the top inlet of cyclone 4. The air guide pipe 5 extends vertically upward and connects to the top plate 101. The upper opening of the air guide pipe 5 is located in the air outlet chamber 2. An air inlet 103 is provided on one side of the air inlet chamber 3. After the dust-laden airflow enters the air inlet chamber 3, it enters from the top inlet of cyclone 4. The top of cyclone 4 is also provided with guide vanes to make the airflow rotate, thereby centrifugally separating the dust. The dust falls and enters the first ash hopper 3 from the bottom outlet of cyclone 4. The airflow after dust separation is discharged upward from the air guide pipe 5 and enters the air outlet chamber 2.

[0027] As dust-laden airflow flows within the air inlet chamber 1, dust accumulates on the lower support plate 102 over time. To slow down this dust accumulation, this embodiment includes a blowpipe 6 to blow air from the lower support plate 102. Please refer to... Figure 3 As shown, specifically, the blowpipe 6 includes a first pipe section 601, a second pipe section 602, and a nozzle 603. The first pipe section 601 is the main pipeline for compressed air intake. Considering that the top plate 101 of the air inlet chamber 1 is generally inclined and the space on one side of the air inlet 103 is limited, the extension direction of the first pipe section 601 is arranged perpendicular to the air intake direction of the air inlet 103, that is, the first pipe section 601 enters the air inlet chamber 1 from the front and rear sides of the dust collector (the side of the air inlet 103 is the right side). The first pipe section 601 is located at the top of the air inlet chamber 1 and is arranged below the top plate 101. There are multiple first pipe sections 601. Outside the dust collector, these first pipe sections 601 are all connected to the air supply pipeline 7, which supplies compressed gas to the first pipe sections 601.

[0028] The first pipe section 601 is located at the top of the air inlet chamber 1. The dust concentration in the dust-laden airflow is relatively low here, so the wear rate is relatively slow, which is beneficial to extending the service life. At the same time, in order to further enhance the protection of the first pipe section 601, a corner guard plate 8 is provided on the windward side of the first pipe section 601, that is, on the side facing the air inlet 103 of the air inlet chamber 1. The corner opening of the corner guard plate 8 faces away from the air inlet 103 of the air inlet chamber 1, and the first pipe section 601 is located at the corner opening.

[0029] Each first pipe segment 601 is connected to a second pipe segment 602 that communicates with the first pipe segment 601. These second pipe segments 602 extend vertically downwards to a position near the lower support plate 102, with their top ends communicating with the first pipe segment 601. The second pipe segments 602 are arranged along the air guide pipe 5 on the leeward side of the air guide pipe 5, where the air guide pipe 5 blocks the dust-laden airflow to reduce dust scouring of the second pipe segments 602. The bottom end of the second pipe segment 602 is bent to be substantially parallel to the lower support plate 102 and has a nozzle 603 installed thereon. The nozzle 603 is about 3 cm away from the lower support plate, and the compressed gas in the first pipe segment 601 is ejected through the second pipe segment 602 and sprayed out through the nozzle 603. The diameter of the first pipe segment 601 and the second pipe segment 602 should be selected to ensure that each nozzle 603 receives approximately the same air pressure to achieve the best dust removal effect.

[0030] Please combine Figure 4 As shown, in the horizontal direction, the angle α between the blowing direction of nozzle 603 and the air inlet direction of air inlet chamber 1 is 30° to 40°. Taking the cyclone separators arranged along the air inlet direction of air inlet chamber 1 as a column, the nozzles in a column are generally set with their blowing direction facing the same side, causing the dust to move to the dust removal channel 9 between the air guide pipes 5 of each column of cyclone separators. The dust removal channel 9 is the space between columns, which extends along the air inlet direction of air inlet chamber 1. A dust removal guide protrusion structure 10 can also be set in the dust removal channel 9. The dust removal guide protrusion structure 10 is connected to the lower support plate 102. Its specific structure will be explained later. The dust removal guide protrusion structure 10 is used to guide the movement of dust.

[0031] In this embodiment, the pulse jet self-cleaning multi-tube dust collector is also equipped with a second dust hopper 11, the inlet of which is located on the opposite side of the air inlet 103 of the air inlet chamber 1. Under the combined action of the pulse jet and the airflow, some of the dust on the lower support plate 102 can enter the second dust hopper 11 and be collected.

[0032] Please combine Figure 5 , Figure 6 As shown, in some embodiments, to further enhance the self-cleaning capability of the dust collector, a second support plate 12 is stacked on the lower support plate 102. The second support plate 12 is composed of several sub-plates 1201 spliced ​​together, and a dust discharge hole corresponding to the inlet of the cyclone 4 is opened on the second support plate 12. It is easy to understand that since the second support plate 12 covers the lower support plate 102, dust will accumulate on the second support plate 12. Therefore, when the aforementioned nozzle 603 is provided with the second support plate 12, its distance from the second support plate 12 is set to about 3 cm, and the bottom end of the second pipe section 603 is bent to be basically parallel to the second support plate 12.

[0033] Please combine Figure 7 , Figure 8As shown, the stacking structure of the second support plate 12 on the lower support plate 102 is as follows: several studs 13 are fixedly installed on the lower support plate 102 as connecting posts of the second support plate 12. The second support plate 12 has holes through which the studs 13 are inserted. Two nuts 14 are screwed onto the top of the studs 13 to loosen and prevent the second support plate 12 from detaching from the studs 13. The studs 13 thus form limiting posts, restricting the second support plate 12 from moving a certain distance on the studs 13. This facilitates the vibration of the second support plate 12 to further improve dust accumulation.

[0034] Several support pipes 15 are also provided between the second support plate 12 and the lower support plate 102. The support pipes 15 are steel pipes and are sleeved on the limiting post (stud 13) to control the distance between the second support plate 12 and the lower support plate 102. The different heights of the support pipes 15 make the side of the second support plate 12 closer to the air inlet 103 of the air inlet cavity 1 higher than the side farther from the air inlet 103 of the air inlet cavity 1. The side farther from the air inlet 103 of the air inlet cavity 1 is where the second ash hopper 11 is set. The slightly inclined second support plate 12 is more conducive to the movement of dust to the second ash hopper 11.

[0035] Please combine further Figure 9 , Figure 10 As shown, the second tray 12 is composed of several sub-plates 1201. Each sub-plate 1201 is connected to at least one vibrating rod 16. One end of the vibrating rod 16 is located outside the dust collector. The vibration generator 17 drives the vibrating rod 16 to vibrate, thereby causing the second tray 12 to vibrate. The connection between the vibration generator 17 and the second tray 12 is only an illustrative example. Other arrangements can also be used.

[0036] In the embodiment where the second support plate 12 is provided, the dust removal guide protrusion 10 in the dust removal channel 9 is set above the splice seam of the sub-plate 1201 to cover the seam. The dust removal guide protrusion 10 is an angled steel plate, and its length direction is the same as the direction of the dust removal channel 9, that is, it also extends along the air inlet direction of the air inlet cavity 1. The dust removal guide protrusion 10 forms a slope on both sides of the air inlet direction of the air inlet cavity 1. Similar to the connection between the second support plate 12 and the limiting post (stud 13), the dust removal guide protrusion 10 passes through the limiting post (stud 13) and has a certain amount of movement clearance. In this way, when the second support plate 12 vibrates, the dust removal guide protrusion 10 also vibrates. The setting of the slope surface is conducive to the movement of dust towards the inlet of the cyclone 4, so as to reduce dust accumulation.

Claims

1. A pulse-jet self-cleaning multi-tube dust collector, comprising an air inlet chamber, a plurality of cyclone separators, and a jet pipe, wherein the air inlet chamber is provided with a top plate and a lower support plate, and the air guide pipes of the cyclone separators extend from the lower support plate to the top plate, characterized in that, The blowpipe includes a first pipe section, a second pipe section, and a nozzle. The first pipe section is arranged at the top of the air inlet chamber. The second pipe section is arranged along the air guide pipe and on the leeward side of the air guide pipe. The top end of the second pipe section is connected to the first pipe section, and the bottom end of the second pipe section is bent and the nozzle is provided.

2. The pulse jet self-cleaning multi-tube dust collector according to claim 1, characterized in that, The first pipe section is provided with a corner guard plate on the windward side, and the corner opening of the corner guard plate faces away from the air inlet of the air inlet cavity. The first pipe section is located at the corner opening.

3. The pulse-jet self-cleaning multi-cyclone dust collector according to claim 1, wherein In the horizontal direction, the angle between the blowing direction of the nozzle and the air intake direction of the air intake chamber is 30° to 40°.

4. The pulse-jet self-cleaning multi-cyclone dust collector according to claim 1, wherein The adjacent air ducts form a dust removal channel, which extends along the air inlet direction of the air inlet chamber. The dust removal channel is provided with a dust removal guide protrusion structure connected to the lower support plate. The dust removal guide protrusion structure has sloping surfaces on both sides of the air inlet direction of the air inlet chamber.

5. The pulse-jet self-cleaning multi-cyclone dust collector according to claim 1, wherein The lower support plate is fixedly connected to the cyclone separator. A second support plate is stacked on the lower support plate. Several limiting posts are provided on the lower support plate. The second support plate passes through the limiting posts. The limiting posts prevent the second support plate from separating from the limiting posts. The second support plate is vibrated by a vibration generator. A dust discharge hole corresponding to the inlet of the cyclone separator is opened on the second support plate.

6. The pulse-jet self-cleaning multi-cyclone dust collector according to claim 5, wherein The adjacent air ducts form a dust removal channel, which extends along the air inlet direction of the air inlet chamber. The dust removal channel is provided with a dust removal guide protrusion structure connected to the second support plate. The dust removal guide protrusion structure has sloping surfaces on both sides of the air inlet direction of the air inlet chamber.

7. The pulse-jet self-cleaning multi-cyclone dust collector according to claim 6, wherein The second pallet is composed of several sub-plates spliced ​​together, and the splice seams of the sub-plates are located below the dust removal guide protrusion structure.

8. The pulse-jet self-cleaning multi-cyclone dust collector according to claim 5, wherein A plurality of support tubes are provided between the second support plate and the lower support plate. The support tubes are sleeved on the limiting post. The different heights of the support tubes make the side of the second support plate closer to the air inlet of the air inlet cavity higher than the side farther away from the air inlet cavity.

9. The pulse jet self-cleaning multi-tube dust collector according to claim 8, characterized in that, The dust collector is provided with a second ash hopper, the inlet of which is located in the air inlet chamber and on the side of the second support plate away from the air inlet of the air inlet chamber.

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