High-temperature maintaining device for spheroidizing furnace

Abstract

The utility model provides a high temperature keeping device for a spheroidizing furnace, which relates to the technical field of spheroidizing furnaces and comprises a furnace body, one end of the furnace body is provided with an annealing bin, the top end of the furnace body is provided with a circulating device, the circulating device comprises two circulating pipes, the top end of the annealing bin is provided with two fans, and the two fans are communicated with the annealing bin. The circulating pipes are arranged in the annealing bin, one ends of the two fans are provided with conveying pipes, the inner walls of the ends, close to the circulating pipes, of the conveying pipes are fixedly connected with circular rings, and the inner walls of the circular rings are slidably connected with cylindrical rods. The circulating pipe is arranged in the annealing bin, hot air flows in the circulating pipe, high temperature in the annealing bin is evenly distributed, one ends of the two L-shaped through holes are blocked, the hot air in the circulating pipe cannot flow out, the high temperature in the annealing bin can be better kept, and the annealing effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of spheroidizing furnaces, in particular to a high-temperature maintaining device for spheroidizing furnaces. Background Art

[0002] Heat treatment is a crucial process in the manufacturing of general-purpose mechanical components. It's crucial for ensuring and improving the quality and service life of these components and for fully realizing the potential of materials. Before cold forming, both wire coils used in the fastener industry and steel strip and wire rods used in the chain industry undergo a heat treatment annealing process to transform the lamellar pearlite in the original steel into spherical pearlite, achieving excellent plastic deformation and low hardness to facilitate cold forming.

[0003] When using an annealing furnace, after the temperature inside the furnace reaches a certain heating height, the temperature in different areas of the furnace may be different, and the mechanical parts distributed in the furnace are annealed differently, resulting in different and poor annealing effects on the mechanical parts using a spheroidizing furnace. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that after the temperature in the furnace reaches a certain heating height, the temperatures in different areas of the furnace may be different, and the mechanical parts distributed in the furnace are subjected to different annealing effects, resulting in different and poor annealing effects on the mechanical parts using the spheroidizing furnace. A high temperature maintaining device for a spheroidizing furnace is proposed.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a high-temperature maintaining device for a spheroidizing furnace, comprising a furnace body, an annealing chamber is provided at one end of the furnace body, a circulation device is provided at the top of the furnace body, the circulation device comprises two circulation pipes, the outer surface portion of the circulation pipe is located inside the annealing chamber, two fans are provided at the top of the annealing chamber, a delivery pipe is provided at one end of the two fans, one end of the two delivery pipes is fixedly connected to one end of the two circulation pipes respectively, the delivery pipes are connected to the interior of the circulation pipes, a circular ring is fixedly connected to the inner wall of one end of the delivery pipe close to the circulation pipe, two L-shaped through holes are provided inside the circular ring, a cylindrical rod is slidably connected to the inner wall of the circular ring, the bottom end of the circular ring is fixedly connected to a U-shaped block, a spring is provided at the bottom end of the cylindrical rod, and the upper and lower ends of the spring are fixedly connected to the bottom end of the cylindrical rod and one side of the U-shaped block respectively.

[0006] The effect achieved by the above components is as follows: by setting up the circulation pipe, after the inside of the annealing chamber is heated and the temperature is increased, the temperature of the two circulation pipes inside the annealing chamber will increase, and the two fans at the top of the annealing chamber will be operated to blow air into the delivery pipe. When passing through the circular ring inside the delivery pipe, the cylindrical rod will be blown to slide downward on the inner wall of the circular ring and compress the spring. Then the air will enter the circulation pipe through the two L-shaped through holes inside the circular ring, so that the hot air flows inside the circulation pipe and the high temperature inside the annealing chamber is evenly distributed. After the fan stops operating, the compressed spring will push the cylindrical rod to slide upward on the inner wall of the circular ring to block one end of the two L-shaped through holes, so that the hot air inside the circulation pipe will not flow out, so that the high temperature inside the annealing chamber can be better maintained.

[0007] Preferably, a groove is formed at the top end of the cylindrical rod, and the diameter of the bottom end of the groove is smaller than the diameter of the top end of the inner wall of the groove.

[0008] The effect achieved by the above components is: by setting the conical groove, it is easier to push the cylindrical rod to move when the fan blows air in contact with the surface of the cylindrical rod, so that the air can normally enter the circulation pipe through the L-shaped through hole.

[0009] Preferably, a slot is provided at the bottom end of the inner wall of the L-shaped through hole, and the width of the bottom end of the slot is greater than the width of the top end of the slot.

[0010] The effect achieved by the above components is that the air can flow out more quickly when passing through the L-shaped through hole by providing the notch.

[0011] Preferably, two blocks are fixedly connected to the bottom end of the cylindrical rod, and the two blocks are respectively located on the left and right sides of the spring.

[0012] The effect achieved by the above components is: when the cylindrical rod moves downward to open the L-shaped through hole, the two stops at the bottom will contact the outer surface of the U-shaped block, restricting the movement of the cylindrical rod, and avoiding as much as possible the cylindrical rod from moving downward too far to severely compress the spring and affect the normal use of the spring.

[0013] Preferably, the bottom end of the cylindrical rod is fixedly connected to a round rod, and the outer surface of the round rod slides on the inner wall of the U-shaped block.

[0014] The effect achieved by the above components is that the cylindrical rod slides on the inner wall of the U-shaped block when it moves up and down. The angle between the cylindrical rod, the U-shaped block and the ring can be further limited by the cylindrical rod, thereby avoiding shaking of the cylindrical rod when it moves as much as possible.

[0015] Preferably, the diameter of the round rod is slightly smaller than the inner diameter of the spring, and the round rod is located inside the spring.

[0016] The effect achieved by the above components is that the internal shape of the spring can be reinforced by arranging the round rod, thereby preventing the spring from twisting left and right when deformed, which affects the normal use of the spring.

[0017] Preferably, an insulation device is provided inside the circulation pipe, and the insulation device includes an insulation pipe, and the outer surface of the insulation pipe is fixedly connected to a plurality of metal rings, and the outer surface of the metal ring is fixedly connected to a plurality of connecting rods, and the connecting rods are distributed in a circle on the outer surface of the insulation pipe, and the outer surface of the metal ring is fixedly connected to the inner wall of the circulation pipe.

[0018] The effect achieved by the above components is: by providing the insulation pipe, the temperature inside the circulation pipe can be further maintained, thereby improving the treatment effect of the heat treatment of the parts after the annealing chamber is raised to a high temperature.

[0019] Preferably, a plurality of reinforcing rods are fixedly connected to the inner wall of the thermal insulation pipe, and the reinforcing rods are distributed in a circular pattern inside the thermal insulation pipe.

[0020] The effect achieved by the above components is: by setting the reinforcing rod, the internal shape of the insulation pipe can be reinforced, and the outer side of the insulation pipe can be prevented from being squeezed and deformed to affect the circulation of air inside the circulation pipe.

[0021] Compared with the prior art, the advantages and positive effects of the present invention are:

[0022] In the utility model, by arranging the circulation pipe, after the interior of the annealing chamber is heated and the temperature of the two circulation pipes inside the annealing chamber will increase, the fan is operated to make the hot air flow in the circulation pipes, so that the high temperature inside the annealing chamber is evenly distributed, and by blocking one end of the two L-shaped through holes, the hot air inside the circulation pipes will not flow out, so that the high temperature inside the annealing chamber can be better maintained and the annealing effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 2 This is a schematic diagram of a partial cross-section of the annealing chamber of the present invention;

[0025] Figure 3 This is a schematic diagram of a partial cross-section of the three-dimensional structure of the delivery pipe of the utility model;

[0026] Figure 4 For this utility model Figure 3 A schematic diagram of a partially enlarged three-dimensional structure at point A;

[0027] Figure 5 It is a schematic diagram of the partial cross-section of the three-dimensional structure of the circular ring of the present invention;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the insulation pipe of the utility model.

[0029] Legend: 1. Furnace body; 2. Circulation device; 3. Insulation device; 4. Annealing chamber; 21. Fan; 22. Delivery pipe; 23. Circulation pipe; 24. Ring; 25. L-shaped through hole; 26. Cylindrical rod; 27. U-shaped block; 28. Spring; 29. ​​Stopper; 210. Round rod; 211. Groove; 212. Notch; 31. Insulation pipe; 32. Metal ring; 33. Connecting rod; 34. Reinforcement rod. DETAILED DESCRIPTION

[0030] Example 1, as Figure 1-5 As shown, a high temperature maintaining device for a spheroidizing furnace comprises a furnace body 1, an annealing chamber 4 is provided at one end of the furnace body 1, a circulation device 2 is provided at the top of the furnace body 1, the circulation device 2 comprises two circulation pipes 23, the outer surface portion of the circulation pipe 23 is located inside the annealing chamber 4, two fans 21 are provided at the top of the annealing chamber 4, a delivery pipe 22 is provided at one end of the two fans 21, one end of the two delivery pipes 22 is fixedly connected to one end of the two circulation pipes 23 respectively, the delivery pipes 22 are connected to the interior of the circulation pipes 23, a circular ring 24 is fixedly connected to the inner wall of one end of the delivery pipe 22 close to the circulation pipe 23, two L-shaped through holes 25 are provided inside the circular ring 24, a cylindrical rod 26 is slidably connected to the inner wall of the circular ring 24, a U-shaped block 27 is fixedly connected to the bottom end of the circular ring 24, a spring 28 is provided at the bottom end of the cylindrical rod 26, and the upper and lower ends of the spring 28 are respectively connected to the bottom end of the cylindrical rod 26 and the U One side of the block 27 is fixedly connected, and by setting the circulation pipe 23, after the interior of the annealing chamber 4 is heated and the temperature of the two circulation pipes 23 inside the annealing chamber 4 will increase, the two fans 21 at the top of the annealing chamber 4 are operated, so that the fan 21 blows air into the delivery pipe 22. When passing through the circular ring 24 inside the delivery pipe 22, the cylindrical rod 26 will be blown to slide downward on the inner wall of the circular ring 24 and compress the spring 28. Then the air will enter the circulation pipe 23 through the two L-shaped through holes 25 inside the circular ring 24, so that the hot air flows in the circulation pipe 23, so that the high temperature inside the annealing chamber 4 is evenly distributed. After the fan 21 stops operating, the compressed spring 28 will push the cylindrical rod 26 to slide upward on the inner wall of the circular ring 24 to block one end of the two L-shaped through holes 25, so that the hot air inside the circulation pipe 23 will not flow out, so that the high temperature inside the annealing chamber 4 can be better maintained.

[0031] Reference Figure 2-5As shown, in this embodiment: a groove 211 is provided at the top of the cylindrical rod 26, and the bottom diameter of the groove 211 is smaller than the top diameter of the inner wall of the groove 211. By setting the conical groove 211, it is easier for the fan 21 to push the cylindrical rod 26 to move when the air blown by the fan 21 contacts the surface of the cylindrical rod 26, so that the air can normally pass through the L-shaped through hole 25 into the circulation pipe 23. A slot 212 is provided at the bottom end of the inner wall of the L-shaped through hole 25, and the bottom width of the slot 212 is larger than the top width of the slot 212. By setting the slot 212, the air can flow out more quickly when passing through the L-shaped through hole 25.

[0032] Reference Figure 2-5 As shown, in this embodiment: the bottom end of the cylindrical rod 26 is fixedly connected to two blocks 29, and the two blocks 29 are respectively located on the left and right sides of the spring 28. When the cylindrical rod 26 moves downward to open the L-shaped through hole 25, the two blocks 29 at the bottom will contact the outer surface of the U-shaped block 27, restricting the movement of the cylindrical rod 26, and avoiding as much as possible that the cylindrical rod 26 moves downward too far and severely compresses the spring 28, affecting the normal use of the spring 28. The bottom end of the cylindrical rod 26 is fixedly connected to a round rod 210, and the outer surface of the round rod 210 is on the inner wall of the U-shaped block 27. Sliding, when the cylindrical rod 26 moves up and down, the round rod 210 will slide on the inner wall of the U-shaped block 27. The round rod 210 can further limit the angle between the cylindrical rod 26, the U-shaped block 27 and the ring 24, and avoid shaking of the cylindrical rod 26 when moving as much as possible. The diameter of the round rod 210 is slightly smaller than the inner diameter of the spring 28. The round rod 210 is located inside the spring 28. By setting the round rod 210, the internal shape of the spring 28 can be reinforced, and the left and right twisting of the spring 28 when deformed can be avoided as much as possible, which affects the normal use of the spring 28.

[0033] Reference Figure 1 、 Figure 3 、 Figure 4 and Figure 6 As shown, in this embodiment: an insulation device 3 is provided inside the circulation pipe 23, and the insulation device 3 includes an insulation pipe 31, and a plurality of metal rings 32 are fixedly connected to the outer surface of the insulation pipe 31, and a plurality of connecting rods 33 are fixedly connected to the outer surface of the metal ring 32. The connecting rods 33 are circumferentially distributed on the outer surface of the insulation pipe 31, and the outer surface of the metal ring 32 is fixedly connected to the inner wall of the circulation pipe 23. By arranging the insulation pipe 31, the temperature inside the circulation pipe 23 can be further maintained, and the treatment effect of the heat treatment of the parts after the annealing chamber 4 is raised to a high temperature is improved. A plurality of reinforcing rods 34 are fixedly connected to the inner wall of the insulation pipe 31, and the reinforcing rods 34 are circumferentially distributed inside the insulation pipe 31. By arranging the reinforcing rods 34, the internal shape of the insulation pipe 31 can be reinforced to avoid the outer side of the insulation pipe 31 from being squeezed and deformed as much as possible to affect the circulation of air inside the circulation pipe 23.

[0034] Working principle: When using a spheroidizing furnace to perform annealing heat treatment on mechanical parts, the hydraulic rod at one end of the furnace body 1 is operated to control the door at one end of the annealing chamber 4 to open, and the mechanical parts are placed in the annealing chamber 4. The annealing chamber 4 is heated and heated by the heating device on the outside of the annealing chamber 4. After the annealing chamber 4 is heated and heated, the temperature of the two circulation pipes 23 inside the annealing chamber 4 will rise, and the two fans 21 at the top of the annealing chamber 4 will be operated to blow air into the conveying pipe 22. When the air passes through the ring 24 inside the conveying pipe 22, the cylindrical The rod 26 slides downward on the inner wall of the ring 24 and compresses the spring 28. Then, the air enters the circulation pipe 23 through the two L-shaped through holes 25 inside the ring 24, so that the hot air flows inside the circulation pipe 23 and the insulation pipe 31, so that the high temperature inside the annealing chamber 4 is evenly distributed. After the fan 21 stops working, the compressed spring 28 pushes the cylindrical rod 26 to slide upward on the inner wall of the ring 24 to block one end of the two L-shaped through holes 25, so that the hot air inside the circulation pipe 23 will not flow out, so that the high temperature inside the annealing chamber 4 can be better maintained.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification of the above embodiment based on the technical essence of the present invention that does not deviate from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A high temperature maintaining device for a spheroidizing furnace, comprising a furnace body (1), characterized in that: An annealing chamber (4) is provided at one end of the furnace body (1), a circulation device (2) is provided at the top of the furnace body (1), the circulation device (2) comprises two circulation pipes (23), the outer surface portion of the circulation pipe (23) is located inside the annealing chamber (4), two fans (21) are provided at the top of the annealing chamber (4), one end of the two fans (21) is provided with a delivery pipe (22), one end of the two delivery pipes (22) is fixedly connected to one end of the two circulation pipes (23), and the delivery pipe (22) and the circulation pipe are fixedly connected. The interior of the conveying pipe (22) is connected to the inner wall of one end of the conveying pipe (22) close to the circulation pipe (23), and a circular ring (24) is fixedly connected. Two L-shaped through holes (25) are provided inside the circular ring (24). The inner wall of the circular ring (24) is slidably connected to a cylindrical rod (26). The bottom end of the circular ring (24) is fixedly connected to a U-shaped block (27). A spring (28) is provided at the bottom end of the cylindrical rod (26). The upper and lower ends of the spring (28) are fixedly connected to the bottom end of the cylindrical rod (26) and one side of the U-shaped block (27) respectively.

2. A high temperature maintaining device for a spheroidizing furnace according to claim 1, characterized in that: A groove (211) is provided at the top end of the cylindrical rod (26), and the diameter of the bottom end of the groove (211) is smaller than the diameter of the top end of the inner wall of the groove (211).

3. The high temperature maintaining device for a spheroidizing furnace according to claim 2, characterized in that: A notch (212) is provided at the bottom end of the inner wall of the L-shaped through hole (25), and the bottom width of the notch (212) is greater than the top width of the notch (212).

4. The high temperature maintaining device for a spheroidizing furnace according to claim 3, characterized in that: The bottom end of the cylindrical rod (26) is fixedly connected to two stoppers (29), and the two stoppers (29) are respectively located on the left and right sides of the spring (28).

5. The high temperature maintaining device for a spheroidizing furnace according to claim 4, characterized in that: The bottom end of the cylindrical rod (26) is fixedly connected to a round rod (210), and the outer surface of the round rod (210) slides on the inner wall of the U-shaped block (27).

6. The high temperature maintaining device for a spheroidizing furnace according to claim 5, characterized in that: The diameter of the round rod (210) is slightly smaller than the inner diameter of the spring (28), and the round rod (210) is located inside the spring (28).

7. The high temperature maintaining device for a spheroidizing furnace according to claim 6, characterized in that: A heat preservation device (3) is provided inside the circulation pipe (23), and the heat preservation device (3) comprises a heat preservation pipe (31), the outer surface of the heat preservation pipe (31) is fixedly connected to a plurality of metal rings (32), the outer surfaces of the metal rings (32) are fixedly connected to a plurality of connecting rods (33), the connecting rods (33) are circumferentially distributed on the outer surface of the heat preservation pipe (31), and the outer surfaces of the metal rings (32) are fixedly connected to the inner wall of the circulation pipe (23).

8. The high temperature maintaining device for a spheroidizing furnace according to claim 7, characterized in that: A plurality of reinforcing rods (34) are fixedly connected to the inner wall of the thermal insulation pipe (31), and the reinforcing rods (34) are circumferentially distributed inside the thermal insulation pipe (31).

Images