Pulse-jet self-deashing multi-tube dust remover

Abstract

The invention discloses a pulse-jet self-deashing multi-pipe dust remover, which comprises an air inlet cavity, a plurality of cyclone separators and a jet pipe, the air inlet cavity is provided with a top plate and a lower supporting plate, air guide pipes of the cyclone separators extend from the lower supporting plate to the top plate, the jet pipe comprises a first pipe section, a second pipe section and a nozzle, and the nozzle is arranged in the first pipe section. The first pipe section is arranged at the top of the air inlet cavity, the second pipe section is arranged along the air guide pipe and arranged on the leeward side of the air guide pipe, the top end of the second pipe section is communicated with the first pipe section, and the bottom end of the second pipe section is bent and provided with the nozzle. The service life of the blowing pipe is long, flowing obstruction of airflow at the inlet of the cyclone separator is small, and the influence of blowing on the overall dust removal efficiency is reduced.

Description

Technical Field

[0001] The present invention relates to a multi-tube dust collector, belonging to the technical field of dust removal equipment. Background Art

[0002] The multi-tube dust collector uses the principle of cyclone centrifugal separation for dust removal. The cyclone separator is installed in the air inlet cavity of the equipment. During the operation of the equipment, dust will accumulate on the lower support plate of the air inlet cavity and must be cleaned regularly. In order to delay the accumulation of dust on the support plate, the technical solution of the Chinese patent with the publication number CN221451991U sets a second ash hopper and a vibratable second support plate is arranged above the original lower support plate of the air inlet cavity, and the vibration of the second support plate is used to delay the accumulation of dust on it. At the same time, further, a blowpipe is arranged along the second support plate at a certain distance above the second support plate, and the second support plate is blown to delay the accumulation of dust.

[0003] However, during the operation of the above solution, the blowpipe is easily scoured by the high-concentration dust-containing air flow, and its service life is not good. In addition, dust accumulation is also likely to occur on the blowpipe and between the blowpipe and the second support plate, thereby reducing the effect of delaying dust accumulation. In addition, the blowpipe is arranged close to the second support plate, blocking the flow of air to the cyclone separator and affecting the overall dust removal efficiency. Summary of the Invention

[0004] Aiming at the defects of the above-mentioned prior art, the present invention provides a pulse jet self-cleaning multi-tube dust collector to solve the problems of short service life of the blowpipe and affecting the overall dust removal efficiency.

[0005] The technical solution of the present invention is as follows: A pulse jet self-cleaning multi-tube dust collector includes an air inlet cavity, a plurality of cyclone separators and a blowpipe. The air inlet cavity 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 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 cavity. 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 communicated with the first pipe section, and the bottom end of the second pipe section is bent and provided with the nozzle.

[0006] Further, a folding angle protection plate is provided on the windward side of the first pipe section. The folding angle opening of the folding angle protection plate faces away from the air inlet of the air inlet cavity, and the first pipe section is arranged at the folding angle opening.

[0007] Further, in the horizontal direction, the blowing direction of the nozzle forms an angle of 30° to 40° with the air inlet direction of the air inlet cavity.

[0008] Further, the lower support plate is fixedly connected to the cyclone tube of the cyclone separator. A second support plate is stacked on the lower support plate. A plurality of limit posts are arranged on the lower support plate. The second support plate is sleeved on the limit posts. The limit posts prevent the second support plate from detaching from the limit posts. The second support plate is vibrated by a vibration generator. Ash discharge holes corresponding to the inlet of the cyclone tube are formed in the second support plate.

[0009] Further, a dust cleaning channel is formed between adjacent air guide pipes. The dust cleaning channel extends along the air inlet direction of the air inlet cavity. A dust cleaning guiding convex structure connected to the lower support plate or the second support plate is arranged in the dust cleaning channel. The two sides of the dust cleaning guiding convex structure in the air inlet direction of the air inlet cavity are slope surfaces.

[0010] Further, the second support plate is composed of a plurality of sub - plates spliced together. The splicing seams of the sub - plates are located below the dust cleaning guiding convex structure.

[0011] Further, a plurality of support pipes are arranged between the second support plate and the lower support plate. The support pipes are sleeved on the limit posts. The different heights of the support pipes make the side of the second support plate close to the air inlet of the air inlet cavity higher than the side far from the air inlet of the air inlet cavity.

[0012] Further, the dust collector is provided with a second ash hopper. The inlet of the second ash hopper is arranged in the air inlet cavity and on the side of the second support plate far from the air inlet of the air inlet cavity.

[0013] Compared with the prior art, the advantages of the technical solution provided by the present invention are as follows:

[0014] In the present invention, the first pipe section of the blow - pipe is arranged at the top of the air inlet cavity, and the second pipe section is arranged on the leeward side of the air guide pipe. The concentration of the dust - containing air flow at the top of the air inlet cavity is relatively low, and the erosion of the first pipe section is weak. The second pipe section is protected by the air guide pipe, which prolongs the service life of the blow - pipe. Most of the structure of the blow - pipe is far from the inlet of the cyclone separator (the inlet of the cyclone tube), with little obstruction to the air flow at the inlet of the cyclone separator, and reduces the influence of blowing on the overall dust removal efficiency. Description of the Drawings

[0015] Figure 1 It is a front - view structural schematic diagram of the pulse - jet self - cleaning multi - tube dust collector (without the second support plate) for the embodiment.

[0016] Figure 2 It is a right - view structural schematic diagram of the pulse - jet self - cleaning multi - tube dust collector (without the second support plate) for the embodiment.

[0017] Figure 3 It is a structural schematic diagram of the blow - pipe of the pulse - jet self - cleaning multi - tube dust collector for the embodiment

[0018] Figure 4 Top view schematic diagram of the nozzle direction setting of the pulse jet self-cleaning multi-tube dust collector in the embodiment.

[0019] Figure 5 Front view structural schematic diagram of the pulse jet self-cleaning multi-tube dust collector (excluding the jet pipe) in the embodiment.

[0020] Figure 6 Right view structural schematic diagram of the pulse jet self-cleaning multi-tube dust collector (excluding the jet pipe) in the embodiment.

[0021] Figure 7 Partial structural schematic diagram of the setting position of the second support plate of the pulse jet self-cleaning multi-tube dust collector in the embodiment.

[0022] Figure 8 Partial connection schematic diagram of the second support plate and the lower support plate of the pulse jet self-cleaning multi-tube dust collector in the embodiment.

[0023] Figure 9 Partial structural schematic diagram of the connection between the vibration generator and the second support plate of the pulse jet self-cleaning multi-tube dust collector in the embodiment.

[0024] Figure 10 For Figure 6 Partial structural schematic diagram at position A in Specific implementation manners

[0025] The following further illustrates the present invention in conjunction with embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. After reading this description, various equivalent modifications of this description by those skilled in the art all fall within the scope defined by the appended claims of this application.

[0026] Please refer to Figure 1 、 Figure 2 As shown, the pulse jet self-cleaning multi-tube dust collector of this embodiment includes an air inlet chamber 1, an air outlet chamber 2, and a first ash hopper 3. The air outlet chamber 2 is located above the air inlet chamber 1, and the two are separated by the top plate 101 of the air inlet chamber 1, where the top plate 101 is also often referred to as the upper support plate. The lower part of the air inlet chamber 1 is connected to the first ash hopper 3, and the two are separated by the lower support plate 102. A plurality of cyclone separators are installed in the pulse jet self-cleaning multi-tube dust collector. The cyclone separator adopts the structure of the existing technology and includes a cyclone cylinder 4 ( Figure 2 Only some of the cyclone cylinders 4 are schematically shown in Figure 1(only represented by lines), the cyclone 4 is installed on the lower support plate 102. The inlet at the top of the cyclone 4 is located in the air inlet chamber 1, and the outlet at the bottom of the cyclone 4 is located in the first ash hopper 3. The lower end of the air guide pipe 5 is inserted into the cyclone 4 from the inlet at the top of the cyclone 4. The air guide pipe 5 extends vertically upward and is connected to the top plate 101, and the upper end 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-containing air flow enters the air inlet chamber 3, it enters from the inlet at the top of the cyclone 4. Guide vanes are also provided at the top of the cyclone 4 to make the air flow rotate, so as to centrifugally separate the dust. The dust falls and enters the first ash hopper 3 from the outlet at the bottom of the cyclone 4. The air flow after dust separation is discharged upward through the air guide pipe 5 and enters the air outlet chamber 2.

[0027] As the dust-containing air flow flows in the air inlet chamber 1, over time, dust will accumulate on the lower support plate 102. In order to slow down the speed of this dust accumulation, in this embodiment, a blowing pipe 6 is provided to blow the lower support plate 102. Please refer to Figure 3 As shown, specifically, the blowing pipe 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 layout space on the side of the air inlet 103 is limited, the extending direction of the first pipe section 601 is arranged perpendicular to the air inlet direction of the air inlet 103, that is, the first pipe section 601 penetrates into 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 under the top plate 101. Multiple first pipe sections 601 are provided. Outside the dust collector, these first pipe sections 601 are all connected to the air supply pipeline 7, and the air supply pipeline 7 supplies compressed gas to the first pipe section 601.

[0028] The first pipe section 601 is at the top of the air inlet chamber 1, where the dust concentration in the dust-containing air flow is relatively low, so the wear rate is relatively slow, which is beneficial to extending the service life. At the same time, in order to further strengthen the protection of the first pipe section 601, 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, a folded corner protection plate 8 is provided. The folded corner opening of the folded corner protection plate 8 faces away from the air inlet 103 of the air inlet chamber 1, and the first pipe section 601 is arranged at the folded corner opening.

[0029] A second pipe section 602 communicating with the first pipe section 601 is connected to each first pipe section 601. These second pipe sections 602 extend vertically downward to a position close to the lower support plate 102, and the top end of the second pipe section 602 communicates with the first pipe section 601. The second pipe sections 602 are arranged along the air duct 5 and are disposed on the leeward side of the air duct 5. The air duct 5 blocks the dust-containing air flow to reduce the erosion of the second pipe sections 602 by dust. The bottom end of the second pipe section 602 is bent to be substantially parallel to the lower support plate 102 and a nozzle 603 is provided. The nozzle 603 is about 3 cm away from the lower support plate 102. The compressed gas in the first pipe section 601 is ejected from the nozzle 603 through the second pipe section 602. The diameters of the first pipe section 601 and the second pipe section 602 should be selected such that substantially equivalent air pressures can be obtained at each nozzle 603 to achieve the best dust cleaning effect.

[0030] Please refer to Figure 4 As shown, in the horizontal direction, the blowing direction of the nozzle 603 forms an angle α of 30° to 40° with the air inlet direction of the air inlet chamber 1. Taking the cyclone separators arranged along the air inlet direction of the air inlet chamber 1 as an example, the blowing directions of the nozzles in one row generally are set to the same side, so that the dust moves towards the dust cleaning channel 9 between the air ducts 5 of the cyclone separators in each row. The dust cleaning channel 9 is the space between rows and extends along the air inlet direction of the air inlet chamber 1. A dust cleaning guiding convex structure 10 can also be provided in the dust cleaning channel 9. The dust cleaning guiding convex structure 10 is connected to the lower support plate 102, and its specific structure will be described in the subsequent content. The dust cleaning guiding convex structure 10 is used to guide the movement of the dust.

[0031] In this embodiment, the pulse jet self-cleaning multi-tube dust collector is further provided with a second ash hopper 11. The inlet of the second ash hopper 11 is arranged on the opposite side of the air inlet 103 of the air inlet chamber 1. Under the combined action of the blowing and the inlet air flow, part of the dust on the lower support plate 102 can enter the second ash hopper 11 and be collected.

[0032] Please refer to Figure 5 、 Figure 6 As shown, in some embodiments, in order to further enhance the self-cleaning ability of the dust collector, a second support plate 12 is further stacked on the lower support plate 102. The second support plate 12 is composed of a plurality of sub-plates 1201 spliced together. Ash discharge holes corresponding to the inlets of the cyclone cylinders 4 are formed 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 substantially parallel to the second support plate 12.

[0033] Please refer to Figure 7 、 Figure 8As shown, the stacking structure of the second pallet 12 on the lower pallet 102 is as follows: A number of stud bolts 13 are fixedly arranged on the lower pallet 102 as connecting columns for the second pallet 12. The second pallet 12 has holes through which it is put on the stud bolts 13. Two nuts 14 are screwed onto the top of the stud bolts 13 to loosen and prevent the second pallet 12 from detaching from the stud bolts 13. The stud bolts 13 thus form limit columns, restricting the second pallet 12 to move a certain distance on the stud bolts 13, thereby facilitating the vibration of the second pallet 12 to further improve dust accumulation.

[0034] A number of support pipes 15 are also provided between the second pallet 12 and the lower pallet 102. The support pipes 15 are steel pipes, which are sleeved on the limit columns (stud bolts 13) to control the distance between the second pallet 12 and the lower pallet 102. The different heights of the support pipes 15 make the side of the second pallet 12 close to the air inlet 103 of the air inlet chamber 1 higher than the side far from the air inlet 103 of the air inlet chamber 1. And the second ash hopper 11 is arranged on the side far from the air inlet 103 of the air inlet chamber 1. The slightly inclined second pallet 12 is more conducive to the movement of dust towards the second ash hopper 11.

[0035] Please further combine Figure 9 、 Figure 10 As shown, the second pallet 12 is composed of a number of sub - plates 1201. At least one vibrating rod 16 is connected to each sub - plate 1201. One end of the vibrating rod 16 is arranged outside the dust collector, and the vibrating rod 16 is driven by a vibration generator 17 to vibrate, thereby causing the second pallet 12 to vibrate. Here, the connection between the vibration generator 17 and the second pallet 12 is only for illustrative purposes, and other arrangements can also be adopted.

[0036] In the embodiment where the second pallet 12 is provided, the dust - cleaning guiding projection structure 10 in the dust - cleaning channel 9 is arranged above the splicing seam of the sub - plates 1201 to cover the seam. The dust - cleaning guiding projection structure 10 is a folded - angle steel plate, and its length direction is the same as the direction of the dust - cleaning channel 9, that is, it also extends along the air inlet direction of the air inlet chamber 1. The dust - cleaning guiding projection structure 10 forms slope surfaces on both sides in the air inlet direction of the air inlet chamber 1. Similar to the connection between the second pallet 12 and the limit columns (stud bolts 13), the dust - cleaning guiding projection structure 10 is sleeved on the limit columns (stud bolts 13) and has a certain clearance for movement. Thus, when the second pallet 12 vibrates, the dust - cleaning guiding projection structure 10 also vibrates. The setting of the slope surfaces is conducive to the movement of dust towards the inlet of the cyclone 4 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. 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 towards the top plate. It is characterized in that, The injection 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 communicated with the first pipe section, and the bottom end of the second pipe section is bent and provided with the nozzle.

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

3. The pulse jet self-cleaning multi-tube dust collector according to claim 1, wherein, In the horizontal direction, the injection direction of the nozzle forms an angle of 30° - 40° with the air inlet direction of the air inlet chamber.

4. The pulse jet self-cleaning multi-tube dust collector according to claim 1, characterized in that, A dust cleaning channel is formed between adjacent air guide pipes. The dust cleaning channel extends along the air inlet direction of the air inlet chamber. A dust cleaning guiding convex structure connected to the lower support plate is provided in the dust cleaning channel. The two sides of the dust cleaning guiding convex structure in the air inlet direction of the air inlet chamber are slope surfaces.

5. The pulse jet self-cleaning multi-tube dust collector according to claim 1, characterized in that, The lower support plate is fixedly connected to the cyclone cylinder of the cyclone separator. A second support plate is stacked on the lower support plate. A plurality of limiting columns are arranged on the lower support plate. The second support plate is sleeved on the limiting columns. The limiting columns prevent the second support plate from detaching from the limiting columns. The second support plate is vibrated by a vibration generator. Dust discharge holes corresponding to the inlet of the cyclone cylinder are formed on the second support plate.

6. The pulse jet self-cleaning multi-tube dust collector according to claim 5, characterized in that, A dust cleaning channel is formed between adjacent air guide pipes. The dust cleaning channel extends along the air inlet direction of the air inlet chamber. A dust cleaning guiding convex structure connected to the second support plate is provided in the dust cleaning channel. The two sides of the dust cleaning guiding convex structure in the air inlet direction of the air inlet chamber are slope surfaces.

7. The pulse jet self-cleaning multi-tube dust collector according to claim 6, characterized in that The second support plate is composed of a plurality of sub - plates spliced together. The splicing seam of the sub - plates is located below the dust cleaning guiding convex structure.

8. The pulse jet self-cleaning multi-tube dust collector according to claim 5, characterized in that, A plurality of support pipes are provided between the second support plate and the lower support plate. The support pipes are sleeved on the limiting columns. The different heights of the support pipes make the side of the second support plate close to the air inlet of the air inlet chamber higher than the side away from the air inlet of the air inlet chamber.

9. The pulse jet self-cleaning multi-tube dust collector according to claim 8, wherein The dust collector is provided with a second ash hopper. The inlet of the second ash hopper is arranged 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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