Combined type scattering device for dryer

Abstract

A dryer composite scattering device, comprising a main shaft and a plurality of cladding type scattering components sleeved on the main shaft; the cladding type scattering component comprises a semicircular plate A and a semicircular plate B, the two straight edge portions of the outer side surface of the semicircular plate A are provided with butt plates A, the two straight edge portions of the outer side surface of the semicircular plate B are provided with butt plates B, the outer side surface of the semicircular plate A and the semicircular plate B are provided with scattering rakes in the middle portion, the semicircular plate A and the semicircular plate B are coaxially sleeved on the main shaft, the butt plates A and the butt plates B are connected through fastening bolts, the cladding type scattering components are sequentially butted at the head and tail to completely cover the outer side surface of the working portion of the main shaft; the device ensures that the whole scattering device has sufficient toughness and strength in a high temperature environment, avoids the bending deformation phenomenon, the semicircular plate of stainless steel material covers the outer side surface of the main shaft, high toughness, high strength and good corrosion resistance are considered, the corrosion material can be avoided to cause rapid wear and thinning, and the shaft body cannot easily appear the deformation and fracture phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of drum dryers, and in particular to a composite dispersing device for dryers. Background Technology

[0002] During the drying process, the dispersing shaft is driven by a motor to rotate at a specific speed. Multiple sets of dispersing blades are distributed on its main shaft. By breaking and lifting the material through the dispersing blades, it not only solves the problem of material sticking to the cylinder wall due to high humidity, but also breaks down the dense structure inside the material, accelerates moisture evaporation, and significantly improves drying efficiency and the uniformity of material drying. It is especially suitable for drying materials that are prone to caking, such as coal slime, slag, and biomass. It is a key component to ensure the stable operation of the drum dryer and improve the quality of the finished product. The utility model patent with application number CN201620159957.5 discloses a dispersing device inside a dryer. The dispersing rod of this device is directly fixed to the main shaft of the dispersing shaft. After severe wear, disassembly, maintenance, or replacement is quite troublesome. Furthermore, the main shaft of this dispersing shaft is usually made of 20G steel. This material gives the dispersing shaft high toughness and strength, which can well adapt to the high-temperature environment inside the drum for dispersing operations. However, the problem is that the wear resistance and corrosion resistance of this dispersing shaft are poor. Corrosive materials will cause it to wear down and thin quickly, which can easily lead to shaft breakage. Improvements are needed. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a composite dispersing device for a dryer.

[0004] The technical solution of this utility model is: a composite dispersing device for a dryer, comprising a main shaft and several encapsulated dispersing components mounted on the main shaft; The encapsulated dispersing assembly includes a semi-circular plate A and a semi-circular plate B. The two straight edges of the outer side of the semi-circular plate A are provided with a mating plate A, and the two mating plates A are located on the same plane. The two straight edges of the outer side of the semi-circular plate B are provided with a mating plate B, and the two mating plates B are located on the same plane. A dispersing rake is provided in the middle of the outer side of both the semi-circular plate A and the semi-circular plate B. The semi-circular plate A and the semi-circular plate B are coaxially mounted on the main shaft. The mating plates A and B are connected by fastening bolts, and the mating plates A and B cover the corresponding circumferential side of the main shaft. The enveloping disintegration components are connected end to end to completely cover the outer surface of the spindle working part.

[0005] Preferably, the main shaft is made of a high-toughness and high-strength material, and the encapsulated disintegration component is made of a corrosion-resistant material.

[0006] Preferably, a gap is provided between the end faces of adjacent encapsulated dispersing components.

[0007] Preferably, a semi-circular pressure strip is provided on the outer side of one end of the semi-circular plate A and the semi-circular plate B, and the two semi-circular pressure strips are pressed against the other end of the semi-circular plate A and the semi-circular plate B to cover the gap between the end faces of the encapsulated disintegration component.

[0008] Preferably, the dispersing rake includes rake frame plates radially disposed at both ends of the outer side of the semicircular plate A or the semicircular plate B, and at least two dispersing rods are arranged side by side between the two rake frame plates.

[0009] Preferably, both sides of the rake frame plate are bent sides, and the bent sides form a sawtooth structure on both sides of the rake frame plate.

[0010] Preferably, the included angle between the dispersing rakes in the adjacent encapsulated dispersing components is 60°, and the six dispersing rakes on the three encapsulated dispersing components can evenly cover the circumferential side of the main shaft.

[0011] Preferably, the main shaft is provided with several rows of radial lugs along the generatrix direction, and the several rows of radial lugs are evenly arranged along the circumference, with mating plate A and mating plate B correspondingly clamped on both sides of the radial lugs.

[0012] Preferably, the bolt holes on the radial ear plate are radially arranged elongated holes, while the bolt holes on the mating plate A and mating plate B are round holes.

[0013] The beneficial technical effects of this utility model are: (1) The main shaft of the device is made of 20G steel, which ensures that the entire dispersing device has sufficient toughness and strength in high temperature environment and avoids bending deformation. At the same time, a semi-circular stainless steel plate is set on the encased dispersing component to cover the outer side of the main shaft, forming a complementary structure of the main shaft and the encased dispersing component. It takes into account high toughness, high strength and good corrosion resistance, which can prevent the corrosive material from being worn thinner quickly. The shaft will not easily deform or break, thus improving its dispersing effect on materials and service life.

[0014] (2) A gap is set between the encapsulated disintegration components and an elongated hole is set on the radial ear plate. The gap provides axial space for the semi-circular plate to expand and deform under high temperature. The elongated hole provides radial space for the semi-circular plate, avoiding stress concentration due to thermal expansion of the semi-circular plate, and thus avoiding weld cracking of the semi-circular plate and loosening of fastening bolts. Furthermore, by setting semi-circular pressure strips on the semi-circular plate to form a head-to-tail connection structure, the deformation gap is covered, ensuring the isolation and corrosion protection effect on the spindle.

[0015] (3) The radial lugs on the main shaft provide a reference and support for the assembly of the semicircular plates of the encapsulated disassembly assembly. The two semicircular plates can be quickly assembled or disassembled with the main shaft through the mating plate and the radial lugs, which improves the convenience of maintenance or replacement of the disassembly assembly. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 yes Figure 1 A schematic diagram of the AA-direction cross-section structure; Figure 3 yes Figure 2 Schematic diagram of the BB-direction cross-section structure; Figure 4 This is a schematic diagram of the three-dimensional structure of the encapsulated disintegration component; Figure 5 yes Figure 4 A schematic diagram of the side view structure; Figure 6 This is a schematic diagram of the three-dimensional structure of semicircular plate B; Figure 7 This is a schematic diagram of the three-dimensional structure of the spindle; Figure 8 yes Figure 7 A side view structural diagram.

[0017] In the figure, 1. main shaft, 11. radial ear plate, 111. oblong hole, 2. encasing disintegration assembly, 21. semi-circular plate A, 211. docking plate A, 22. semi-circular plate B, 221. docking plate B, 23. disintegration rake, 231. rake frame plate, 232. disintegration rod, 233. serrated structure, 24. fastening bolt, 25. reinforcing plate, 3. gap, 31. semi-circular pressure strip. Detailed Implementation

[0018] Example 1, see appendix Figure 1-8A composite dispersing device for a dryer includes a main shaft 1 and several encasing dispersing components 2 mounted on the main shaft 1. Each encasing dispersing component 2 includes a semi-circular plate A 21 and a semi-circular plate B 22. The two straight edges of the outer side of semi-circular plate A 21 are each provided with a mating plate A 211, and the two mating plates A 211 are located on the same plane. The two straight edges of the outer side of semi-circular plate B 22 are each provided with a mating plate B 221, and the two mating plates B 221 are located on the same plane. The semi-circular plates A 21 and B 22 can form a cylindrical shape after being connected by their respective mating plates. The outer sides of both semi-circular plates A 21 and B 22 have... A dispersing rake 23 is provided, which is radially welded and fixed to a semi-circular plate. A reinforcing plate 25 is provided between the root of the dispersing rake 23 and the semi-circular plate to ensure the stability of the connection. Semi-circular plates A 21 and B 22 are coaxially mounted on the main shaft 1. A mating plate A 211 and B 221 are connected by fastening bolts 24. A reinforcing plate 25 is provided between the outer side of the mating plate A 211 and the outer side of the semi-circular plate A 21. A reinforcing plate 25 is provided between the outer side of the mating plate B 221 and the outer side of the semi-circular plate B 22. The mating plates A 211 and B 221 cover the circumferential side of the corresponding part of the main shaft 1.

[0019] The enveloping disintegration assembly 2 is connected end to end to completely cover the outer surface of the working part of the spindle 1.

[0020] The main shaft 1 is made of a high-toughness and high-strength material, such as 20G steel, which has the characteristics of high toughness and high strength. The encased disintegration component 2 is made of a material with good corrosion resistance, such as stainless steel, which has good corrosion resistance but lacks toughness.

[0021] The main shaft 1 is provided with several rows of radial lugs 11 along the generatrix direction. The several rows of radial lugs 11 are evenly arranged around the circumference. The mating plate A 211 and the mating plate B 221 are clamped on both sides of the radial lugs 11. The radial lugs 11 provide the assembly reference and support for the semicircular plates of the enclosed disassembly assembly 2. The two semicircular plates can be quickly assembled or disassembled with the main shaft 1 through the mating plate and the radial lugs 11, which improves the convenience of maintenance or replacement of the disassembly assembly.

[0022] When in use, the dispersing device is driven to rotate by a drive unit. The dispersing rake 23 on the dispersing device breaks up clumps of material and scatters the material to improve the drying effect. During this process, the 20G steel main shaft 1 ensures that the entire dispersing device has sufficient toughness and strength in high-temperature environments, preventing the main shaft 1 from bending and deforming, which would affect the dispersing effect. The stainless steel semi-circular plate on the encased dispersing component 2 completely covers the outer side of the main shaft 1, preventing corrosive materials from directly contacting the main shaft 1. This forms a complementary structure between the main shaft 1 and the encased dispersing component 2, taking into account high toughness, high strength, and good corrosion resistance. This prevents the main shaft 1 from wearing down quickly due to corrosion, and the shaft is less prone to deformation and breakage. If the stainless steel dispersing device deforms due to insufficient toughness after long-term operation, the semi-circular plate can be quickly removed from the main shaft 1 and quickly reassembled by unscrewing the fastening bolts 24, improving the convenience of maintenance or replacement of the dispersing component.

[0023] Example 2, see appendix Figure 2-6 This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that: a gap 3 is provided between the end faces of adjacent encapsulated dispersing components 2, the bolt holes on the radial ear plate 11 are radially arranged elongated holes 111, the bolt holes on the docking plate A 211 and the docking plate B 221 are round holes, and the fastening bolts 24 pass through the round holes on the docking plate A 211 and the docking plate B 221 and the elongated holes 111 on the radial ear plate 11 in sequence.

[0024] The gap 3 provides axial space for the semi-circular plate to expand and deform under high temperature conditions, and the elongated hole 111 provides radial space for the semi-circular plate, avoiding stress concentration caused by thermal expansion, and thus avoiding weld cracking and loosening of the fastening bolts 24.

[0025] Semicircular pressure strips 31 are provided on the outer side of one end of semicircular plate A 21 and semicircular plate B 22. The two semicircular pressure strips form an annular pressure strip between the ends of the two semicircular plates. The two semicircular pressure strips 31 are pressed against the other ends of semicircular plate A 21 and semicircular plate B 22. The annular pressure strip is sleeved on the outer side of the two semicircular pressure strips 31 to cover the gap 3 between the end faces of the encapsulated dispersing component 2. The semicircular pressure strips are made of stainless steel.

[0026] By setting a semi-circular pressure strip 31 on the semi-circular plate to form a head-to-tail sleeve structure, the deformation gap 3 is covered, ensuring the isolation and anti-corrosion effect of the main shaft 1.

[0027] Example 3, see appendix Figure 4-6This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that the included angle between the dispersing rakes 23 in the adjacent enclosing dispersing components 2 is 60°. The six dispersing rakes 23 on the three enclosing dispersing components 2 can evenly cover the circumferential side of the main shaft 1. The dispersing rake 23 includes rake frame plates 231 radially arranged at both ends of the outer side of the semicircular plate A 21 or the semicircular plate B 22. At least two dispersing rods 232 are arranged side by side between the two rake frame plates 231. The dispersing rods 232 are stainless steel cylindrical rods. The two ends of the dispersing rods 232 extend out of the outer side of the two rake frame plates 231 respectively. Both sides of the rake frame plates 231 are bent sides, and the bent sides form a sawtooth structure 233 on both sides of the rake frame plates 231.

[0028] The arrangement of the dispersing rakes 23 in this embodiment makes the cross-section of the dispersing device radial, and the combination of adjacent dispersing rakes 23 can form a spiral pattern on the outer side of the main shaft 1. Combined with the rake frame plate 231 of the sawtooth structure 233 and the dispersing rod 232, it can effectively tear and break up the clumps of wet materials, and can also evenly scatter the materials through the centrifugal force generated by rotation, increasing the contact area between the materials and the hot airflow and improving the drying effect.

Claims

1. A composite dispersing device for a dryer, characterized in that: Includes the spindle and several encased disintegration components mounted on the spindle; The encapsulated dispersing assembly includes a semi-circular plate A and a semi-circular plate B. The two straight edges of the outer side of the semi-circular plate A are provided with a mating plate A, and the two mating plates A are located on the same plane. The two straight edges of the outer side of the semi-circular plate B are provided with a mating plate B, and the two mating plates B are located on the same plane. A dispersing rake is provided in the middle of the outer side of both the semi-circular plate A and the semi-circular plate B. The semi-circular plate A and the semi-circular plate B are coaxially mounted on the main shaft. The mating plates A and B are connected by fastening bolts, and the mating plates A and B cover the corresponding circumferential side of the main shaft. The enveloping disintegration components are connected end to end to completely cover the outer surface of the spindle working part.

2. The composite dispersing device for a dryer according to claim 1, characterized in that: The main shaft is made of a high-toughness and high-strength material, and the encapsulated disintegration component is made of a corrosion-resistant material.

3. The composite dispersing device for a dryer according to claim 1, characterized in that: A gap is provided between the end faces of adjacent encapsulated disintegration components.

4. The composite dispersing device for a dryer according to claim 3, characterized in that: Both the outer surfaces of one end of the semicircular plate A and the semicircular plate B are provided with semicircular pressure strips. The two semicircular pressure strips are pressed against the other ends of the semicircular plate A and the semicircular plate B to cover the gap between the end faces of the encapsulated disintegration component.

5. The composite dispersing device for a dryer according to claim 1, characterized in that: The dispersing rake includes rake frame plates radially arranged at both ends of the outer side of the semicircular plate A or semicircular plate B, and at least two dispersing rods are arranged side by side between the two rake frame plates.

6. The composite dispersing device for a dryer according to claim 5, characterized in that: Both sides of the rake frame plate are bent sides, which gives the rake frame plate a serrated structure.

7. The dryer compound dispersing device according to claim 1, characterized in that: The included angle between the dispersing rakes in the adjacent enveloping dispersing components is 60°, and the six dispersing rakes on the three enveloping dispersing components can evenly cover the circumferential side of the main shaft.

8. The composite dispersing device for a dryer according to claim 1, characterized in that: The main shaft is provided with several rows of radial lugs along the generatrix direction. The several rows of radial lugs are evenly arranged along the circumference, and mating plate A and mating plate B are clamped on both sides of the radial lugs respectively.

9. A composite dispersing device for a dryer according to claim 8, characterized in that: The bolt holes on the radial ear plate are radially arranged elongated holes, while the bolt holes on the mating plate A and mating plate B are round holes.

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