Diffuser of bell-type furnace

Abstract

The bell-type furnace diffuser comprises a top plate, a bottom plate and a wall plate, an air guide mechanism, an inner flow guide mechanism, an outer flow guide mechanism and a positioning mechanism are arranged among the top plate, the bottom plate and the wall plate, the air guide mechanism comprises an air guide cylinder, the inner flow guide mechanism comprises a supporting plate and an inner flow guide plate, and the outer flow guide mechanism comprises an outer flow guide plate inserting groove and an outer flow guide plate. The positioning mechanism is arranged on the bottom plate and comprises positioning plates which are evenly arranged. The utility model has the advantages of good structural stability and strong non-deformability, and can work in a high temperature environment of 1050 DEG C; the recycling process of room temperature and high temperature can be borne; the positioning function is achieved, and the steel coil can be prevented from moving when placed; the impeller protection function is achieved, and the fan impeller can be effectively protected; and mounting and dismounting lifting points are designed, so that the operation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of bell-type furnace equipment spare parts for steel coil annealing, and specifically relates to a bell-type furnace diffuser. Background Art

[0002] The bell-type furnace is a special equipment for annealing heat treatment of steel coils. The diffuser is a spare part of the bell-type annealing furnace, on which the steel coils are placed. The diffuser bears a load of about 125 tons, and the steel coils are all made of stainless steel. During the annealing heat treatment process, the steel coils need to be placed on the diffuser. If the lifting is not careful, the diffuser will be displaced; the diffuser has to withstand a high temperature of 1050℃ when working, and undergoes a cycle from room temperature to high temperature, which causes the diffuser to deform greatly. This deformation will cause the stacked steel coils to tilt; the lack of impeller protection leads to impeller damage caused by falling objects during the heat treatment process or loading and unloading process; there are safety hazards. Utility Model Content

[0003] The utility model aims to provide a bell-type furnace diffuser to solve the above problems.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A bell-type furnace diffuser comprises a top plate, a bottom plate and a wall plate, wherein the top plate, the bottom plate and the wall plate are all in annular shape, the top plate and the bottom plate are parallel, the inner wall of the wall plate is connected to the outer wall of the bottom plate, an air guide mechanism, an inner air guide mechanism, an outer air guide mechanism and a positioning mechanism are arranged between the top plate, the bottom plate and the wall plate, the air guide mechanism comprises an air guide cylinder, the top surface of the air guide cylinder is fixedly connected to the inner circle of the top plate; the inner air guide mechanism comprises a support plate and an inner air guide plate, the support plates are uniformly distributed on the inner circle outer circumference of the bottom plate in the circumferential direction, the top surface of the support plate is fixedly connected to the top plate, and the bottom surface of the support plate is fixedly connected to the bottom plate and the wall plate from the inside to the outside. The support plate is vertically arranged on the base plate, an inner guide plate is arranged at one end of the support plate close to the inner circle of the base plate, and a lifting hole is arranged at one end of the support plate away from the inner guide plate; the outer guide mechanism includes an outer guide plate slot and an outer guide plate, the outer guide plate slot is a "U"-shaped structure, and the outer guide plate slot includes several groups, each group includes two outer guide plate slots that are symmetrical and open facing each other, the two outer guide plate slots in each group are respectively fixed on the outer end surfaces of adjacent support plates, and the outer guide plate is inserted into the two outer guide plate slots in the same group; the positioning mechanism is arranged on the base plate, including evenly arranged positioning plates.

[0006] In order to further realize the utility model, an annular protective net bracket is arranged on the inner circle inner wall of the top plate, a protective net is arranged on the top of the protective net bracket, and the top surface of the protective net is flush with the top surface of the top plate.

[0007] In order to further realize the utility model, a reinforcement ring is arranged on the outer side of the air guide tube, the top surface of the reinforcement ring is fixedly connected to the bottom surface of the top plate, and reinforcement ring ribs are evenly arranged between the reinforcement ring and the air guide tube for fixed connection.

[0008] In order to further realize the utility model, the wall plate is an inclined plane with a lower inside and a higher outside, the bottom surface of the support plate follows the bottom plate and the wall plate and is fixedly connected, a flange is provided at one end of the support plate close to the inner circle of the bottom plate, an inner guide plate is provided below the flange, the inner guide plate is a "U"-shaped structure, the open end of the inner guide plate is fixedly connected to the end wall of the support plate, the inner guide plate is shorter than the end of the flange, the end wall of the flange is fixedly connected to the outer wall of the air guide tube, and the top surface of the flange is fixedly connected to the top plate. The inner guide plate is bent into a "U"-shaped structure by a steel plate and welded to the inner end of the support plate, which can reduce the resistance of the thickness of the support plate to the wind flow.

[0009] In order to further realize the utility model, the support plate is an arc-shaped structure bent to one side.

[0010] In order to further realize the utility model, the inner circle and outer periphery of the top plate are respectively provided with inner arc and outer arc of concave-convex structure, the position and shape of the inner arc match with the inner hole of the fan and the steel ring, a number of circular holes and expansion joints are provided on the top plate, one end of the expansion joint is connected with the circular hole, and the other end is connected with the outer arc, the circular hole is provided between the center of the inner arc and the outer arc, close to 1 / 3 of the outer arc, and the end of the expansion joint connected with the outer arc is provided at the center of the outer arc. The outer arc and the inner arc are designed as concave-convex structures, and the cracking caused by thermal expansion and contraction is prevented by increasing the length of the circular arc line; the concave part of the outer arc is used as the outer air outlet channel; an expansion joint with a width of 5mm is provided obliquely along the center of the concave part of the outer arc, and a circular hole is provided at one end of the expansion joint to prevent crack expansion.

[0011] In order to further realize the utility model, a top guide plate is arranged between two adjacent support plates, the top guide plate is inclined toward the top plate, and an angle of 10° is formed between the top guide plate and the top plate. "U"-shaped slots are arranged on both sides of the top guide plate, and the ends of the slots away from the top guide plate are fixedly connected to the inner wall of the support plate, and the top guide plate is clamped in the slots. The top guide plate is made of steel plate, and its shape is consistent with the shape of the space formed by the adjacent support plates, which plays a role in guiding the wind flow; the slot is made of steel plate, and the shape of the edge connected to the support plate matches the support plate, which is used to fix the top guide plate. The width of the slot is 10-20mm, and it is welded on the side of the support plate. When welding, it forms an angle of 10° with the top plate, which is used to fix the top guide plate.

[0012] In order to further realize the utility model, a support ring I and a support ring II are arranged on the bottom surface of the bottom plate, and the support ring I and the support ring II both include 8 arc-shaped plates of equal length, and a gap of 10 mm is arranged between adjacent arc-shaped plates.

[0013] In order to further realize the utility model, the centers of the top plate, the air guide tube, the reinforcement ring, the bottom plate, the support ring I and the support ring II are located on the same straight line.

[0014] In order to further realize the utility model, the positioning plate is arranged between the support ring I and the support ring II.

[0015] In order to further realize the utility model, a plurality of support plate reinforcing ribs are arranged between the support plate and the bottom plate to fix the connection.

[0016] In order to further realize the utility model, a "well"-shaped support plate is arranged inside the protective net bracket, and a stud is arranged between the protective net bracket and the inner wall of the inner circle of the top plate for connection.

[0017] In order to further realize the utility model, the outer guide plate is inclined toward the top plate, and a vertical plate is arranged at the top end of the outer guide plate.

[0018] In order to further realize the utility model, the diameter of the top plate is greater than the sum of the diameters of the bottom plate and the wall plate.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The utility model has good structural stability and strong anti-deformation ability, and can work in a high temperature environment of 1050°C; it can withstand the cyclic use process of room temperature and high temperature; it has a positioning function to prevent the steel coil from moving when it is placed; it has an impeller protection function to effectively protect the fan impeller; it is designed with installation and disassembly hanging points for easy operation.

[0021] The top plate in the utility model is made of 40mm thick steel plate, designed into a circular ring structure, and the outer diameter matches the bell-type furnace; the support plate is made of 40mm thick steel plate, pressed into an approximately circular arc shape, and a lifting hole is provided at the end; the wall plate is 50mm thick and is cast in one piece; the junction between the bottom plate and the wall plate is processed into an arc surface, that is, the top surface of the bottom plate and the wall plate are smoothly connected.

[0022] The arrangement positions of the support ring I and the support ring II in the utility model match the installation position of the diffuser.

[0023] The outer guide plate in the utility model is fixed to the outer guide plate slot made by welding steel plates, and is used for guiding the wind flow of the internal fan upwards.

[0024] The air guide tube in the utility model is made of steel plates rolled into a cylinder structure, which is welded to the lower side of the top plate, so that the wind flow inside the steel roll circulates through the fan.

[0025] The protective net in the utility model is made of a flat wire net, and the purpose is to prevent accidents caused by foreign objects falling during the steel coil loading and operation.

[0026] The reinforcing ring ribs in the utility model are made of steel plates, which play a role in strengthening the connection stability between the top plate and the reinforcing ring, and further improve the anti-deformation ability and structural stability of the diffuser. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the utility model;

[0028] Figure 2 for Figure 1 A top view of

[0029] Figure 3 for Figure 1 Bottom view of

[0030] Figure 4 for Figure 1 A longitudinal section of

[0031] Figure 5 for Figure 1 's side elevation view;

[0032] Figure 6 It is a schematic diagram of the structure of the support plate, guide plate, top guide plate, slot, outer guide plate slot and reinforcing ribs in the utility model;

[0033] Figure 7 The structure of the support plate and the guide plate in the utility model is shown in FIG. Figure Ⅰ ;

[0034] Figure 8 The structure of the support plate and the guide plate in the utility model is shown in FIG. Figure II ;

[0035] Fig. 9 It is a structural schematic diagram of the support plate in the utility model;

[0036] The meanings of the accompanying numbers are as follows: 1. Top plate; 2. Bottom plate; 3. Wall plate; 4. Air guide tube; 5. Support plate; 6. Inner guide plate; 7. Lifting hole; 8. Outer guide plate slot; 9. Outer guide plate; 10. Positioning plate; 11. Protective net bracket; 12. Protective net; 13. Reinforcement ring; 14. Reinforcement ring rib; 15. Flange; 16. Support plate reinforcement rib; 17. Outer arc; 18. Inner arc; 19. Circular hole; 20. Expansion joint; 21. Top guide plate; 22. Slot; 23. Support ring I; 24. Support ring II; 25. Arc plate; 26. Gap; 27. Support plate; 28. Stud; 29. ​​Vertical plate. DETAILED DESCRIPTION

[0037] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0038] like Figure 1-9As shown, a bell-type furnace diffuser includes a top plate 1, a bottom plate 2 and a wall plate 3, the top plate 1, the bottom plate 2 and the wall plate 3 are all circular, the top plate 1 and the bottom plate 2 are parallel, the inner wall of the wall plate 3 is connected to the outer wall of the bottom plate 2, the diameter of the top plate 1 is greater than the sum of the diameters of the bottom plate 2 and the wall plate 3, an annular protective net bracket 11 is arranged on the inner wall of the inner circle of the top plate 1, a "well"-shaped support plate 27 is arranged inside the protective net bracket 11, a stud 28 is arranged between the protective net bracket 11 and the inner wall of the inner circle of the top plate 1, a protective net 12 is arranged on the top of the protective net bracket 11, the top surface of the protective net 12 is flush with the top surface of the top plate 1, and the inner circle and outer periphery of the top plate 1 are respectively arranged The inner arc 18 and the outer arc 17 of the concave-convex structure, the position and shape of the inner arc 18 match the inner hole of the fan and the steel ring, a plurality of circular holes 19 and expansion joints 20 are arranged on the top plate 1, one end of the expansion joint 20 is connected with the circular hole 19, and the other end is connected with the outer arc 17, the circular hole 19 is arranged between the inner arc 18 and the center of the outer arc 17, close to 1 / 3 of the outer arc 17, and the end of the expansion joint 20 connected with the outer arc 17 is arranged at the center of the outer arc 17, and the bottom surface of the bottom plate 2 is provided with a support ring I 23 and a support ring II 24, and the support ring I 23 and the support ring II 24 both include 8 arc plates 25 of equal length, and a 10 mm gap 26 is arranged between adjacent arc plates 25;

[0039] An air guide mechanism, an inner flow guide mechanism, an outer flow guide mechanism and a positioning mechanism are arranged between the top plate 1, the bottom plate 2 and the wall plate 3:

[0040] The air guide mechanism includes an air guide tube 4, the top surface of the air guide tube 4 is fixedly connected to the inner circle of the top plate 1, a reinforcement ring 13 is arranged on the outer side of the air guide tube 4, the top surface of the reinforcement ring 13 is fixedly connected to the bottom surface of the top plate 1, and reinforcement ring ribs 14 are evenly arranged between the reinforcement ring 13 and the air guide tube 4 for fixed connection;

[0041] The inner guide mechanism includes a support plate 5 and an inner guide plate 6. The support plates 5 are uniformly distributed on the inner periphery of the bottom plate 2. The support plate 5 is an arc-shaped structure bent to one side. The top surface of the support plate 5 is fixedly connected to the top plate 1. The bottom surface of the support plate 5 is fixedly connected to the bottom plate 2 and the wall plate 3 from the inside to the outside. The support plate 5 is vertically arranged on the bottom plate 2. The inner guide plate 6 is arranged at one end of the support plate 5 close to the inner circle of the bottom plate 2. The end of the support plate 5 away from the inner guide plate 6 is provided with a hoisting hole 7. The wall plate 3 is an inclined plane with a low inside and a high outside. The support plate The bottom surface of the support plate 5 is fixedly connected along the bottom plate 2 and the wall plate 3, and a plurality of support plate reinforcing ribs 16 are arranged between the support plate 5 and the bottom plate 2 to fix the connection, a flange 15 is arranged at one end of the support plate 5 close to the inner circle of the bottom plate 2, and an inner guide plate 6 is arranged below the flange 15. The inner guide plate 6 is a "U"-shaped structure, and the open end of the inner guide plate 6 is fixedly connected to the end wall of the support plate 5. The inner guide plate 6 is shorter than the end of the flange 15, and the end wall of the flange 15 is fixedly connected to the outer wall of the air guide tube 4. The top surface of the flange 15 is fixedly connected to the top plate 1;

[0042] The outer guide mechanism includes an outer guide plate slot 8 and an outer guide plate 9. The outer guide plate slot 8 is a "U"-shaped structure. The outer guide plate slot 8 includes a plurality of groups, each group includes two outer guide plate slots 8 that are symmetrical and have openings facing each other. The two outer guide plate slots 8 of each group are respectively fixedly arranged on the outer end surfaces of the adjacent support plates 5. The outer guide plates 9 are inserted into the two outer guide plate slots 8 of the same group. The outer guide plates 9 are inclined toward the top plate 1, and a vertical plate 29 is arranged at the top of the outer guide plate 9.

[0043] The positioning mechanism is arranged on the bottom plate 2, and includes positioning plates 10 arranged evenly, and the positioning plates 10 are arranged between the support ring I 23 and the support ring II 24;

[0044] A top guide plate 21 is arranged between two adjacent support plates 5. The top guide plate 21 is inclined toward the top plate 1. An angle of 10° is formed between the top guide plate 21 and the top plate 1. "U"-shaped slots 22 are respectively arranged on both sides of the top guide plate 21. One end of the slot 22 away from the top guide plate 21 is fixedly connected to the inner wall of the support plate 5, and the top guide plate 21 is clamped in the slot 22.

[0045] The centers of the top plate 1, the air guide tube 4, the reinforcing ring 13, the bottom plate 2, the support ring I 23 and the support ring II 24 are located on the same straight line.

[0046] When in use, insert the top guide plate 21 into the slot 22, insert the outer guide plate 9 into the outer guide plate slot 8, fix the protection net bracket 11 through the studs 28, place the protection net 12 on the protection net bracket 11, and hang it in the lifting hole 7 at the end of the support plate 5 with a hanger bolt. After lifting, align the positioning plate 10 with the corresponding slots of the furnace and place them in place, and then the remaining devices and steel coils can be placed on the diffuser.

Claims

1. A bell-type furnace diffuser, characterized in that: The invention comprises a top plate (1), a bottom plate (2) and a wall plate (3), wherein the top plate (1), the bottom plate (2) and the wall plate (3) are all in annular shape, the top plate (1) and the bottom plate (2) are parallel, the inner wall of the wall plate (3) is connected to the outer wall of the bottom plate (2), an air guide mechanism, an inner air guide mechanism, an outer air guide mechanism and a positioning mechanism are arranged between the top plate (1), the bottom plate (2) and the wall plate (3), the air guide mechanism comprises an air guide tube (4), the top surface of the air guide tube (4) is fixedly connected to the inner circle of the top plate (1); the inner air guide mechanism comprises a support plate (5) and an inner air guide plate (6), the support plates (5) are uniformly distributed on the outer circumference of the inner circle of the bottom plate (2), the top surface of the support plate (5) is fixedly connected to the top plate (1), and the bottom surface of the support plate (5) is fixedly connected to the bottom plate (2) and the wall plate (3) from the inside to the outside. The support plate (5) is vertically arranged on the bottom plate (2), an inner guide plate (6) is arranged at one end of the support plate (5) close to the inner circle of the bottom plate (2), and a lifting hole (7) is arranged at one end of the support plate (5) away from the inner guide plate (6); the outer guide mechanism comprises an outer guide plate slot (8) and an outer guide plate (9), the outer guide plate slot (8) is a "U"-shaped structure, and the outer guide plate slot (8) comprises a plurality of groups, each group comprises two outer guide plate slots (8) that are symmetrical and arranged with openings facing each other, the two outer guide plate slots (8) of each group are respectively fixedly arranged on the outer end surfaces of adjacent support plates (5), and the outer guide plate (9) is inserted into the two outer guide plate slots (8) of the same group; the positioning mechanism is arranged on the bottom plate (2), and comprises positioning plates (10) that are evenly arranged.

2. The bell-type furnace diffuser according to claim 1, characterized in that: An annular protective net support (11) is arranged on the inner wall of the inner circle of the top plate (1), a protective net (12) is arranged on the top of the protective net support (11), and the top surface of the protective net (12) is flush with the top surface of the top plate (1).

3. The bell-type furnace diffuser according to claim 2, characterized in that: A reinforcing ring (13) is arranged outside the air guide tube (4), the top surface of the reinforcing ring (13) is fixedly connected to the bottom surface of the top plate (1), and reinforcing ring ribs (14) are evenly arranged between the reinforcing ring (13) and the air guide tube (4) for fixed connection.

4. The bell-type furnace diffuser according to claim 3, characterized in that: The wall plate (3) is an inclined plane with a lower interior and a higher exterior. The bottom surface of the support plate (5) is shaped along the bottom plate (2) and the wall plate (3) and is fixedly connected. A flange (15) is provided at one end of the support plate (5) close to the inner circle of the bottom plate (2). An inner guide plate (6) is provided below the flange (15). The inner guide plate (6) is a "U"-shaped structure. The open end of the inner guide plate (6) is fixedly connected to the end wall of the support plate (5). The inner guide plate (6) is shorter than the end of the flange (15). The end wall of the flange (15) is fixedly connected to the outer wall of the air guide tube (4). The top surface of the flange (15) is fixedly connected to the top plate (1).

5. The bell-type furnace diffuser according to claim 4, characterized in that: The support plate (5) is an arc-shaped structure bent to one side.

6. The bell-type furnace diffuser according to claim 5, characterized in that: The inner circle and outer circumference of the top plate (1) are respectively provided with an inner arc (18) and an outer arc (17) of a concave-convex structure, the position and shape of the inner arc (18) match the inner hole of the fan and the steel ring, a plurality of circular holes (19) and expansion joints (20) are provided on the top plate (1), one end of the expansion joint (20) is connected to the circular hole (19), and the other end is connected to the outer arc (17), the circular hole (19) is provided between the center of the inner arc (18) and the outer arc (17), and close to 1 / 3 of the outer arc (17), and the end of the expansion joint (20) connected to the outer arc (17) is provided at the center of the outer arc (17).

7. The bell-type furnace diffuser according to claim 6, characterized in that: A top guide plate (21) is disposed between two adjacent support plates (5), the top guide plate (21) is inclined toward the top plate (1), and an angle of 10° is formed between the top guide plate (21) and the top plate (1), "U"-shaped clamping grooves (22) are respectively disposed on both sides of the top guide plate (21), one end of the clamping groove (22) away from the top guide plate (21) is respectively fixedly connected to the inner wall of the support plate (5), and the top guide plate (21) is clamped in the clamping groove (22).

8. The bell-type furnace diffuser according to claim 7, characterized in that: A support ring I (23) and a support ring II (24) are arranged on the bottom surface of the bottom plate (2); the support ring I (23) and the support ring II (24) both comprise eight arc-shaped plates (25) of equal length, and a 10 mm gap (26) is arranged between adjacent arc-shaped plates (25).

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