Dust removal unit of vibrated fluidized bed
By installing anti-counterflow components and annular dust collection side pockets between the L-shaped airflow pipeline and the tail pipe of the vibrating fluidized bed, the problem of low dust removal efficiency caused by the counter-airflow is solved, and a more efficient dust collection and dust removal effect is achieved.
Patent Information
- Application Number
- CN202411603961.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-01-03
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the existing vibration fluidized bed dust removal technology, due to the presence of counter-air flow, the dust reduction efficiency of dust is poor. In severe cases, the dust may flow backward back to the fluidized bed, affecting the dust removal effect.
Install anti-counterflow components between the vertical sections and tail pipes of the L-shaped airflow pipeline to form dust discharge ring holes and counter-current dust discharge ring holes, and set up annular dust collection side bags to cover these holes, and use an inverted horn-shaped flow guidance The ring and annular dust collecting side pockets guide the air flow outward or countercurrent into the side pockets to reduce countercurrent return.
It effectively reduces the possibility of reverse airflow entering the fluidized bed, improves dust removal and dust collection efficiency, and enhances the dust collection ability.
Smart Images
Figure CN119236549A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of fluidized bed dust removal, and in particular to a dust removal unit of a vibrating fluidized bed. Background Art
[0002] The existing vibrating fluidized bed dust removal technology generally uses a fan to drain the dust generated by the fluidized bed through a pipe, and then collects and processes it through a dust bag. In the prior art, when collecting dust through a dust bag at the end of the pipe, the airflow entrained with dust will generate a reverse airflow along the inner side wall of the dust bag when it hits the bottom of the dust bag. Because the existence of the reverse airflow greatly reduces the dust reduction efficiency, in severe cases, the dust in the pipe will flow back to the fluidized bed, resulting in poor dust removal effect. To this end, the present invention provides a vibrating fluidized bed dust removal unit. Summary of the invention
[0003] In view of the above-mentioned technical deficiencies, the object of the present invention is to provide a dust removal unit for a vibrating fluidized bed, by installing an anti-backflow component between the vertical section and the tail duct of the L-shaped airflow duct, and forming a dust exhaust ring hole and a counterflow dust exhaust ring hole; at the same time, an annular dust collecting side bag that can cover the dust exhaust ring hole and the counterflow dust exhaust ring hole is provided; the technical problems raised in the background technology are solved.
[0004] In order to solve the above technical problems, the present invention adopts the following technical scheme: the present invention provides a dust removal unit of a vibrating fluidized bed, comprising: an L-shaped airflow duct, a tail duct and an anti-backflow component; the anti-backflow component comprises an inverted trumpet-shaped guide ring and an annular dust collecting side bag; an earring plate is provided on the outer side of the top of the inverted trumpet-shaped guide ring; a plurality of vertical connecting rods are evenly distributed on the earring plate; a plurality of the vertical connecting rods connect the vertical section of the L-shaped airflow duct and the tail duct; a dust exhaust ring hole is formed between the vertical section of the L-shaped airflow duct and the earring plate; when the airflow attached to the inner wall of the L-shaped airflow duct flows downward, it has a tendency to dissipate outward, and the outwardly diffused airflow is discharged into the annular dust collecting side bag through the dust exhaust ring hole, thereby reducing the backflow of the airflow after rushing into the bottom dust collecting bag and improving the dust collection efficiency. A countercurrent dust discharge ring hole is formed between the tail duct and the earring plate; when the airflow that hits the dust bag flows back in reverse, the inverted trumpet-shaped guide ring blocks the reverse flow to prevent the reverse flow from flowing back to the fluidized bed, and at the same time, the reverse flow flows into the annular dust collecting side bag through the countercurrent dust discharge ring hole, thereby improving the dust removal and dust collection efficiency. The annular dust collecting side bag is sleeved on the outside of the L-shaped airflow duct and the tail duct; the annular dust collecting side bag covers the dust discharge ring hole and the countercurrent dust discharge ring hole; and a dust collecting bag is sleeved on the bottom end of the tail duct.
[0005] Preferably, an annular opening is provided on the inner side of the annular dust collecting side bag; annular belts are integrally connected to the upper and lower sides of the annular opening; the two annular belts are respectively sleeved on the outer side of the vertical section of the L-shaped airflow duct and the outer side of the earring plate; to ensure that the flowing airflow can be collected when it dissipates to the surroundings, thereby reducing the generation of reverse airflow; and at the same time, the dust carried by the reverse airflow can be well collected.
[0006] Preferably, an annular tightening groove is provided on the outer side of the vertical section of the L-shaped airflow duct and the outer side of the earring plate; the annular belt is fastened to the outer side of the vertical section of the L-shaped airflow duct and the outer side of the earring plate through a tightening belt; the tightening belt matches the annular tightening groove; the tightening belt can be an elastic belt or a rope lock, as long as it can stably fix the annular belt.
[0007] Preferably, the angle range between the inverted trumpet-shaped guide ring and the vertical direction is: 30°-60°. Within this angle range, the reverse airflow can be effectively blocked and guided into the reverse dust removal ring hole; at the same time, the downward airflow within this angle range is not easy to generate an upward reverse flow; the ratio range of the length L of the inverted trumpet-shaped guide ring in the inclined direction to the radius R of the tail duct is: 1 / 6-1 / 2; within this ratio range, the downward airflow can be given a sufficient downward flow channel to avoid the generation of reverse airflow; at the same time, within this ratio range, the reverse airflow can be effectively blocked and guided into the reverse dust removal ring hole.
[0008] Preferably, the vertical connecting rod is symmetrical about the earring plate; a plurality of installation grooves are evenly distributed on the lower end surface of the vertical section of the L-shaped airflow duct and the top end surface of the tail duct; the upper and lower ends of the vertical connecting rod are respectively and correspondingly installed in the installation grooves; at the same time, the upper and lower ends of the vertical connecting rod are fixedly connected to the vertical section and the tail duct of the L-shaped airflow duct by fastening bolts to ensure stable installation and convenient disassembly.
[0009] Preferably, a diverter fan assembly is installed inside the vertical section of the L-shaped airflow duct; the diverter fan assembly includes a rotating shaft and a plurality of spiral blades; the top of the rotating shaft is connected to a plurality of horizontal support rods through a bearing; the ends of the horizontal support rods are fixedly installed on the inner side flow of the vertical section of the L-shaped airflow duct; the spiral blades are driven by the downward airflow, and at the same time, the spiral blades can drive the airflow to disperse outward and enter the dust exhaust ring hole, thereby reducing the backflow and thereby improving the dust collection efficiency.
[0010] Preferably, the width of the spiral blade gradually increases from top to bottom in the horizontal direction, thereby improving the ability of the airflow to escape outwards; the ratio of the maximum width of the spiral blade in the horizontal direction to the inner diameter of the vertical section of the L-shaped airflow duct is in the range of 1 / 3-1 / 2; this ratio range can ensure the driving ability for escape outwards while ensuring good overall flow of the rural airflow.
[0011] Preferably, exhaust fans are installed inside the horizontal section and the vertical section of the L-shaped airflow duct to extract the dust-containing gas in the fluidized bed into the L-shaped airflow duct.
[0012] The beneficial effects of the present invention are:
[0013] 1. The present invention installs an anti-backflow component between the vertical section and the tail duct of the L-shaped airflow duct to form a dust discharge ring hole and a countercurrent dust discharge ring hole; at the same time, an annular dust collecting side bag that can cover the dust discharge ring hole and the countercurrent dust discharge ring hole is provided; the forward outward diffused airflow and the reverse reflux airflow can be guided to flow into the annular dust collecting side bag, which greatly reduces the possibility of the reverse airflow flowing into the fluidized bed and improves the dust removal and dust collection efficiency.
[0014] 2. The present invention effectively improves the airflow diversion driving ability by installing a diverter fan assembly above the anti-backflow assembly, thereby effectively driving the airflow into the dust exhaust ring hole, reducing the backflow airflow, and thus improving the dust collection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 It is a schematic structural diagram of a dust removal unit of a vibrating fluidized bed according to the present invention.
[0017] Figure 2 for Figure 1 Right view of .
[0018] Figure 3 for Figure 2 Sectional view of AA.
[0019] Figure 4 for Figure 3 A is an enlarged view of the middle image.
[0020] Figure 5 It is a structural schematic diagram of installing a splitter fan assembly in an L-shaped airflow duct in the present invention.
[0021] Figure 6 It is a schematic diagram of the structure of the diverter fan assembly in the present invention.
[0022] Figure 7 It is a schematic structural diagram of the inverted trumpet-shaped guide ring in the present invention.
[0023] Figure 8 It is a schematic diagram of the structure of the tail pipe in the present invention.
[0024] Fig. 9 It is a schematic diagram of the structure of the annular dust collecting side bag in the present invention.
[0025] Explanation of the accompanying drawings: 1-L-shaped airflow duct, 2-tail duct, 3-inverted trumpet-shaped guide ring, 31-earring plate, 32-vertical connecting rod, 321-installation groove, 4-annular dust collecting side bag, 41-annular belt, 411-annular binding groove, 51-dust exhaust ring hole, 52-countercurrent dust exhaust ring hole, 6-dust bag, 71-rotating shaft, 711-horizontal support rod, 72-spiral blade. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0027] Embodiment 1:
[0028] like Figures 1 to 9As shown, the present invention provides a dust removal unit for a vibrating fluidized bed, comprising: an L-shaped airflow duct 1, a tail duct 2 and an anti-backflow component; the anti-backflow component comprises an inverted trumpet-shaped guide ring 3 and an annular dust collecting side bag 4; specifically, the angle range between the inverted trumpet-shaped guide ring 3 and the vertical direction is: 30°-60°, within this angle range, it can effectively block the reverse airflow and guide it into the reverse dust discharge ring hole 52; at the same time, within this angle range, the downward airflow is not easy to generate an upward reverse flow; the ratio range of the length L of the inverted trumpet-shaped guide ring 3 in the inclined direction to the radius R of the tail duct 2 is: 1 / 6-1 / 2; within this ratio range, the downward airflow can be given a sufficient downward flow channel to avoid the generation of reverse airflow; at the same time, within this ratio range, the reverse airflow can be effectively blocked and guided into the reverse dust discharge ring hole 52. An earring plate 31 is provided on the outer side of the top of the inverted trumpet-shaped guide ring 3; a number of vertical connecting rods 32 are evenly distributed on the earring plate 31; the number of vertical connecting rods 32 connect the vertical section of the L-shaped airflow duct 1 and the tail duct 2; specifically, the vertical connecting rods 32 are symmetrical about the earring plate 31; a number of mounting grooves 321 are evenly distributed on the lower end surface of the vertical section of the L-shaped airflow duct 1 and the top surface of the tail duct 2; the upper and lower ends of the vertical connecting rod 32 are respectively and correspondingly installed in the mounting grooves 321; at the same time, the upper and lower ends of the vertical connecting rod 32 are fixedly connected to the vertical section of the L-shaped airflow duct 1 and the tail duct 2 by fastening bolts to ensure stable installation and convenient disassembly. A dust discharge ring hole 51 is formed between the vertical section of the L-shaped airflow duct 1 and the earring plate 31; when the airflow attached to the inner wall of the L-shaped airflow duct 1 flows downward, it has a tendency to escape outward, and the outwardly diffused airflow is discharged into the annular dust collecting side bag 4 through the dust discharge ring hole 51, reducing the backflow after the airflow rushes into the bottom dust collecting bag 6, thereby improving the dust collecting efficiency. A countercurrent dust discharge ring hole 52 is formed between the tail duct 2 and the earring plate 31; when the airflow that hits the dust collecting bag 6 flows back in reverse, the inverted trumpet-shaped guide ring 3 blocks the reverse backflow, preventing the reverse flow from flowing back to the fluidized bed, and at the same time, the reverse flow flows into the annular dust collecting side bag 4 through the countercurrent dust discharge ring hole 52, thereby improving the dust removal and dust collecting efficiency.
[0029] The annular dust collecting side bag 4 is sleeved on the outside of the L-shaped airflow duct 1 and the tail duct 2; the annular dust collecting side bag 4 covers the dust discharge ring hole 51 and the countercurrent dust discharge ring hole 52; an annular opening is provided on the inner side of the annular dust collecting side bag 4; the upper and lower sides of the annular opening are integrally connected to an annular belt 41; the two annular belts 41 are respectively sleeved on the outer side of the vertical section of the L-shaped airflow duct 1 and the outer side of the earring plate 31 to ensure that the rural flow airflow can be collected when it escapes to the surroundings to reduce the generation of reverse airflow; at the same time, it can well collect dust entrained by the reverse airflow; specifically, an annular fastening groove 411 is provided on the outer side of the vertical section of the L-shaped airflow duct 1 and the outer side of the earring plate 31; the annular belt 41 is fastened to the outer side of the vertical section of the L-shaped airflow duct 1 and the outer side of the earring plate 31 by a fastening belt; the fastening belt matches the annular fastening groove 411, and the fastening belt is not shown in the accompanying figure. The fastening belt can be an elastic belt or a rope lock, which can stably fix the annular belt 41. A dust bag 6 is sleeved on the bottom end of the tail duct 2 for collecting dust; exhaust fans are installed inside the horizontal section and the vertical section of the L-shaped airflow duct 1 for extracting the dust-containing gas in the fluidized bed into the L-shaped airflow duct 1.
[0030] When this embodiment is actually used, an anti-backflow component is installed between the vertical section of the L-shaped airflow duct and the tail duct to form a dust exhaust ring hole and a countercurrent dust exhaust ring hole; at the same time, an annular dust collecting side bag that can cover the dust exhaust ring hole and the countercurrent dust exhaust ring hole is provided; the forward outward diffusing airflow and the reverse reflux airflow can be guided to flow into the annular dust collecting side bag, which greatly reduces the possibility of reverse airflow flowing into the fluidized bed and improves the dust removal and dust collection efficiency.
[0031] Embodiment 2:
[0032] See also Figures 4 to 6 As shown, on the basis of retaining all the technical features in the specific embodiment 1, a diverter fan assembly is installed inside the vertical section of the L-shaped airflow duct 1; the diverter fan assembly includes a rotating shaft 71 and a plurality of spiral blades 72; the top of the rotating shaft 71 is connected to a plurality of horizontal support rods 711 through a bearing; the end of the horizontal support rod 711 is fixedly installed on the inner side of the vertical section of the L-shaped airflow duct 1; the spiral blades 72 are driven by the downward airflow, and at the same time, the spiral blades 72 can drive the airflow to disperse outward into the dust exhaust ring hole, reduce the countercurrent airflow, and thus improve the dust collection efficiency. Specifically, the width of the spiral blades 72 gradually increases from top to bottom along the horizontal direction, improving the ability of the airflow to escape outward; the maximum width of the spiral blades 72 along the horizontal direction accounts for the ratio of the inner diameter of the vertical section of the L-shaped airflow duct 1 in the range of: 1 / 3-1 / 2; this ratio range can ensure the ability to escape outward while ensuring the overall flow of good rural airflow.
[0033] When this embodiment is actually used, by installing a diverter fan assembly above the anti-backflow assembly, the airflow diversion driving capability is effectively improved, thereby effectively driving the airflow into the dust exhaust ring hole, reducing the backflow airflow, and thus improving the dust collection efficiency.
[0034] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A dust removal unit for a vibrating fluidized bed, characterized in that: include: An L-shaped airflow duct (1), a tail duct (2) and an anti-backflow component; the anti-backflow component comprises an inverted trumpet-shaped guide ring (3) and an annular dust collecting side bag (4); an earring plate (31) is provided on the outer side of the top end of the inverted trumpet-shaped guide ring (3); a plurality of vertical connecting rods (32) are evenly distributed on the earring plate (31); a plurality of the vertical connecting rods (32) connect the vertical section of the L-shaped airflow duct (1) and the tail duct (2); a dust discharge ring hole (51) is formed between the vertical section of the L-shaped airflow duct (1) and the earring plate (31); a backflow dust discharge ring hole (52) is formed between the tail duct (2) and the earring plate (31); The annular dust collecting side bag (4) is sleeved on the outside of the L-shaped airflow duct (1) and the tail duct (2); the annular dust collecting side bag (4) covers the dust discharge annular hole (51) and the countercurrent dust discharge annular hole (52); and a dust collecting bag (6) is sleeved on the bottom end of the tail duct (2).
2. A dust removal unit for a vibrating fluidized bed according to claim 1, characterized in that: An annular opening is provided on the inner side of the annular dust collecting side bag (4); an annular belt (41) is integrally connected to the upper and lower sides of the annular opening; and the two annular belts (41) are respectively sleeved on the outer side of the vertical section of the L-shaped airflow duct (1) and the outer side of the earring plate (31).
3. A dust removal unit for a vibrating fluidized bed as claimed in claim 2, characterized in that: An annular fastening groove (411) is provided on the outer side of the vertical section of the L-shaped airflow duct (1) and the outer side of the earring plate (31); the annular belt (41) is fastened to the outer side of the vertical section of the L-shaped airflow duct (1) and the outer side of the earring plate (31) by a fastening belt; the fastening belt matches the annular fastening groove (411).
4. A dust removal unit for a vibrating fluidized bed as claimed in claim 3, characterized in that: The angle between the inverted trumpet-shaped guide ring (3) and the vertical direction is in the range of 30°-60°; the ratio of the length L of the inverted trumpet-shaped guide ring (3) in the inclined direction to the inner radius R of the tail pipe (2) is in the range of 1 / 6-1 / 2.
5. A dust removal unit for a vibrating fluidized bed as claimed in claim 4, characterized in that: The vertical connecting rod (32) is symmetrical with respect to the earring plate (31); a plurality of mounting grooves (321) are evenly distributed on the lower end surface of the vertical section of the L-shaped airflow duct (1) and the top end surface of the tail duct (2); and the upper and lower ends of the vertical connecting rod (32) are respectively and correspondingly mounted in the mounting grooves (321).
6. A dust removal unit for a vibrating fluidized bed as claimed in claim 5, characterized in that: A flow splitter fan assembly is installed inside the vertical section of the L-shaped airflow duct (1); the flow splitter fan assembly comprises a rotating shaft (71) and a plurality of spiral blades (72); the top of the rotating shaft (71) is connected to a plurality of horizontal support rods (711) via a bearing; the ends of the horizontal support rods (711) are fixedly installed on the inner side of the vertical section of the L-shaped airflow duct (1).
7. A dust removal unit for a vibrating fluidized bed according to claim 6, characterized in that: The width of the spiral blade (72) gradually increases from top to bottom in the horizontal direction; the ratio of the maximum width of the spiral blade (72) in the horizontal direction to the inner diameter of the vertical section of the L-shaped airflow duct (1) is in the range of 1 / 3-1 / 2.
8. A dust removal unit for a vibrating fluidized bed according to claim 7, characterized in that: Exhaust fans are installed inside both the horizontal section and the vertical section of the L-shaped airflow duct (1).