Modularly assembled intermediate frequency heating furnace

Abstract

A modular assembled intermediate frequency heating furnace, comprising an outer furnace body composed of at least two splicing assemblies connected in sequence, the splicing assembly comprising two end plates with opposite and parallel spaced plate surfaces and a plurality of connecting rods detachably installed between the two end plates, the plate surfaces of the two end plates being provided with through openings penetrating through the end plates and corresponding to the through openings, the plurality of connecting rods being circumferentially and spacedly distributed around the through openings to enclose a cylindrical cavity coaxially arranged with the through openings, and the outer sides of the plurality of connecting rods being detachably provided with water and power cables surrounding the cylindrical cavity; an annular heat insulation partition plate being detachably installed around the outer edges of the opposite plate surfaces of the two end plates; the cylindrical cavities of the plurality of splicing assemblies constituting the outer furnace body being sequentially communicated to form an inner furnace installation cavity, and an inner furnace cavity lining body being detachably connected with the connecting rods in the inner furnace installation cavity. The modular structure improves the flexibility and adaptability of the intermediate frequency heating furnace in transportation, installation and maintenance, and is also conducive to the disassembly and assembly of the furnace body during maintenance.

Description

Technical Field

[0001] This utility model belongs to the technical field of medium-frequency heating furnaces, specifically relating to a modularly assembled medium-frequency heating furnace. Background Technology

[0002] A medium frequency heating circuit is a circuit that uses a medium frequency power supply (usually in the range of several kilohertz to tens of kilohertz) to provide energy for heating equipment. Medium frequency heating technology is widely used in industrial fields such as metal heat treatment, welding, quenching, and annealing, and is particularly suitable for applications requiring rapid heating and precise temperature control.

[0003] However, in the use of medium frequency heating furnaces, especially large medium frequency heating furnaces for pipes or bars, they are often assembled as a whole in the production workshop before being sold and transported. This makes the existing medium frequency heating furnaces not only difficult to operate during transportation, but also very easy to cause damage to internal parts during transportation. Moreover, the disassembly and assembly of the medium frequency heating furnace is very cumbersome and inconvenient during subsequent maintenance and repair. Utility Model Content

[0004] The purpose of this utility model is to provide a modularly assembled medium-frequency heating furnace. The outer furnace body is formed by connecting several detachable and assembled splicing components, and the water and cable and inner furnace cavity are detachably installed with the outer furnace body. This improves the flexibility and adaptability of the medium-frequency heating furnace in transportation, installation and maintenance, and also facilitates the disassembly and assembly of the furnace body during maintenance and repair.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a modularly assembled medium-frequency heating furnace, comprising an outer furnace body composed of at least two sequentially detachably connected splicing components. Each splicing component includes two end plates with opposite surfaces arranged in parallel and spaced apart, and several connecting rods detachably installed between the two end plates. The middle of the two end plates is provided with corresponding through-holes penetrating the end plates. Several connecting rods are circumferentially spaced around the through-holes to form a cylindrical cavity coaxially arranged with the through-holes. Water and cable cables are detachably provided around the cylindrical cavity on the outer side of the several connecting rods. An annular heat-insulating partition for sealing and wrapping the connecting rods is detachably installed on the outer edge of the opposite surfaces of the two end plates.

[0006] The cylindrical cavities of multiple splicing components that make up the outer furnace body are connected in sequence to form the inner furnace mounting cavity. In the inner furnace mounting cavity, the inner furnace cavity liner is detachably connected to the connecting rod.

[0007] Furthermore, in the splicing assembly, multiple slots are provided on the opposite surfaces of the two end plates, and the multiple slots are evenly distributed around the opening. Multiple grooves are provided on the back surfaces of the two end plates, surrounding the opening and corresponding to the slots one by one. The grooves and the slots are separated by partitions. Both ends of the connecting rod are provided with connectors that are inserted into the slots. The grooves are provided with connecting screws that penetrate to the corresponding slots and are threadedly connected to the connectors in the slots.

[0008] Furthermore, the connecting rod has several notches spaced apart along the axial direction of the connecting rod on the side facing away from the cylindrical cavity, and both ends are open. The notches on the several connecting rods are arranged in a ring to form a spiral channel, and the water cable is located in the spiral channel.

[0009] Furthermore, adjacent end plates in adjacent splicing components are provided with corresponding perforations for water cables to pass through.

[0010] Furthermore, the outer edges of the opposing surfaces of the two end plates within the splicing assembly are each provided with a support ring surrounding several connecting rods. The annular thermal insulation partition is placed on the outside of the support ring and fixedly connected by insulating screws.

[0011] Furthermore, the annular insulation partition includes two symmetrically arranged semi-annular baffles. The inner surface of the semi-annular baffles is provided with a semi-annular liner. The semi-annular liner and the semi-annular baffles cooperate to form a step that matches the support ring. The insulating screw passes through the semi-annular baffles and is threadedly connected to the support ring.

[0012] Furthermore, the inner furnace cavity lining is detachably fixed to the connecting rod by insulating screws.

[0013] Furthermore, the end plate of the splicing assembly for connecting with another splicing assembly is provided with mounting holes. The mounting holes on the two end plates of adjacent splicing assemblies that are connected correspond to each other. The two adjacent splicing assemblies are fixed together by passing an insulating bolt through the corresponding two mounting holes.

[0014] Furthermore, the end of the inner furnace cavity lining extends to the opening of the outermost end plate on the outer furnace body.

[0015] Furthermore, the connecting rod and the end plate are detachably connected by a snap-fit ​​structure, which includes a snap-fit ​​elastic buckle and a slot.

[0016] The beneficial effects of this utility model are as follows: This utility model, through the outer furnace body composed of several detachable and assembled splicing components, and the water and cable and inner furnace cavity detachably installed with the outer furnace body, not only improves the flexibility and adaptability of transportation, installation and maintenance of medium frequency heating furnace, and facilitates the commissioning, daily inspection, upgrading and maintenance of medium frequency heating furnace, but also improves the safety of equipment operation and maintenance, reduces the downtime and maintenance costs of medium frequency heating furnace, and provides higher production efficiency and flexibility. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the outer furnace body structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the splicing component structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the end plate structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the connecting rod structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the annular thermal insulation partition structure of this utility model;

[0023] The markings in the diagram are: 1. Outer furnace body; 2. Water and cable; 3. Inner furnace cavity lining; 4. Splicing assembly; 5. Inner furnace mounting cavity; 6. Annular insulation partition; 7. End plate; 8. Support ring; 9. Connecting rod; 10. Cylindrical cavity; 11. Through port; 12. Mounting hole; 13. Perforation; 14. Slot; 15. Groove; 16. Connecting screw; 17. Notch; 18. Connector; 19. Semi-annular baffle; 20. Step; 21. Semi-annular inner lining. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention in any way.

[0025] Example 1

[0026] See attached document Figures 1-2 As shown, a modularly assembled medium-frequency heating furnace includes an outer furnace body 1 composed of at least two splicing components 4 connected in sequence. An inner furnace cavity liner 3 is provided in the inner furnace mounting cavity 5 inside the outer furnace body 1, and a water cable 2 is also provided around the inner furnace mounting cavity 5.

[0027] like Figure 3As shown, the splicing assembly 4 includes two end plates with their surfaces facing each other and arranged in parallel intervals, and several connecting rods 9 that can be detachably installed between the two end plates 7. A through-hole 11 is provided in the middle of the surface of each of the two end plates, and the several connecting rods 9 are arranged in an orderly circumferential interval around the through-hole 11.

[0028] like Figure 4 , 5 As shown, to achieve a detachable connection between the connecting rod 9 and the end plate 7, multiple slots 14 are provided on the opposite surfaces of the two end plates 7, and the slots 14 are evenly distributed around the opening 11. Multiple grooves 15 are provided on the opposite surfaces of the two end plates 7, surrounding the opening 11 and corresponding one-to-one with the slots 14. The grooves 15 and the slots 14 are separated by a partition, and a fixing hole is provided on the partition for installing connecting screws 16. Both ends of the connecting rod 9 are provided with connector heads 18 that engage with the slots 14. After the connecting rod 9 is inserted into the slots 14 of the two end plates 7, connecting screws 16 are threaded through the fixing holes from the groove 15 side and connected to the connector heads 18 of the connecting rod 9. The connecting screws 16 are insulated screws.

[0029] Again Figure 3 For reference, after the connecting rods 9 are installed between the two end plates 7, they can form a cylindrical cavity 10 coaxially arranged with the opening 11, and the inner diameter of the cylindrical cavity 10 is not greater than the diameter of the opening 11. After the multiple splicing components 4 are connected and assembled in sequence, the cylindrical cavities 10 of each splicing component 4 are connected in series through the opening 11 to form an inner furnace mounting cavity 5, and an inner furnace cavity liner 3 is set in the inner furnace mounting cavity 5. The inner furnace cavity liner 3 is fixedly connected to the connecting rods 9, and the end of the inner furnace cavity liner 3 extends to the opening 11 of the outermost end plate 7 on the outer furnace body. The water cable is wound around the inner furnace mounting cavity 5 on the outside of the connecting rods 9.

[0030] For example Figure 4 As shown, in order to achieve the sequential connection of splicing components 4, the end plate 7 of splicing component 4 for connecting with another splicing component 4 is provided with mounting holes 12 for installing insulating bolts. The mounting holes 12 on the two end plates 7 connected on adjacent splicing components correspond to each other, and the two adjacent splicing components 4 are fixed together by insulating bolts passing through the corresponding mounting holes 12.

[0031] To ensure that the inner furnace cavity liner 3 is firmly and stably installed in the inner furnace installation cavity 5, several connecting rods 9 are provided with several insulating screws that are arranged in an orderly manner along the axial direction of the connecting rods 9 and pass through the connecting rods 9. The inner furnace cavity liner 3 installed in the inner furnace installation cavity 5 is detachably connected to the several connecting rods 9 through the insulating screws.

[0032] like Figure 6As shown, in order to achieve thermal insulation of this device, an annular thermal insulation partition 6 for sealing and wrapping several connecting rods 9 is detachably installed on the outer edges of the opposite surfaces of the two end plates 7 in each splicing component 4. Specifically, the outer edges of the opposite surfaces of the two end plates 7 are provided with support rings 8 surrounding the several connecting rods 9. The annular thermal insulation partition 6 includes two symmetrically arranged semi-annular baffles 19. The inner surface of the semi-annular baffles 19 is provided with a semi-annular liner 21. The semi-annular liner 21 and the semi-annular baffles 19 cooperate to form a step 20 that matches the support rings 8. Insulating screws pass through the semi-annular baffles 19 and are threadedly connected to the support rings 8 to fix the annular thermal insulation partition 6 on the end plates 7.

[0033] Example 2

[0034] The main difference between this embodiment and Embodiment 1 is that, Figure 5 As shown, in this embodiment, the connecting rod 9 has multiple recesses 17 arranged axially along the connecting rod 9, with both ends open, on the side opposite to the cylindrical cavity 10. The recesses 17 on the several connecting rods 9 arranged in a ring form a spiral channel. The water cable 2 is wound around the spiral channel through the recesses 17, which not only allows it to be evenly wound around the outside of the inner furnace mounting cavity 5, but also prevents the water cable 2 from accidentally sliding.

[0035] Furthermore, to facilitate the winding of the water cable 2 on two adjacent splicing components 4, corresponding through holes 13 are provided on adjacent end plates of adjacent splicing components for the water cable 2 to pass through. After the water cable 2 is spirally wound in one splicing component 4, it can pass through the through holes 13 into the next splicing component 4 to continue spiral winding.

[0036] Example 3

[0037] In the above embodiments, the detachable connection between the connecting rod 9 and the end plate 7 is achieved through the connecting screw 16. In this embodiment, the detachable connection can also be achieved through a conventional snap-fit ​​structure. For example, an elastic buckle is provided at the end of the connecting rod, and a slot is provided on the end plate. A stop surface is provided in the slot. During the insertion of the elastic buckle into the slot, it is compressed and deformed inward to facilitate insertion. After the elastic buckle is inserted into the slot, the compression force disappears, the elastic buckle returns to its original position, and the stop surface of the slot is engaged, thus achieving the connection between the connecting rod and the end plate. When disassembly is required, simply press the elastic buckle from the outside of the slot to retract it inward to pull out the connecting rod.

[0038] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the specific implementation of this utility model with reference to the above embodiments. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model are within the protection scope of the pending claims.

Claims

1. A modularly assembled medium-frequency heating furnace, characterized in that: The outer furnace body (1) consists of at least two splicing components (4) that are sequentially and detachably connected. Each splicing component (4) includes two end plates (7) with opposite and parallel spacing, and several connecting rods (9) that are detachably installed between the two end plates (7). The two end plates (7) have through-holes (11) in the middle of their surfaces. Several connecting rods (9) are distributed circumferentially around the through-holes (11) to form a cylindrical cavity (10) that is coaxial with the through-holes (11). Water cables (2) are detachably installed around the cylindrical cavity (10) on the outside of the connecting rods (9). An annular heat-insulating partition (6) for sealing and wrapping the connecting rods (9) is detachably installed on the outer edges of the opposite surfaces of the two end plates (7). The cylindrical cavities (10) in the multiple splicing components (4) that make up the outer furnace body (1) are connected in sequence to form the inner furnace mounting cavity (5). In the inner furnace mounting cavity (5), the inner furnace cavity liner (3) is detachably connected to the connecting rod (9).

2. The modularly assembled medium-frequency heating furnace according to claim 1, characterized in that: In the splicing assembly (4), multiple slots (14) are provided on the opposite surfaces of the two end plates (7), and the multiple slots (14) are evenly distributed around the opening (11). Multiple grooves (15) are provided on the back surfaces of the two end plates (7) around the opening (11) and corresponding to the slots (14). The grooves (15) and the slots (14) are separated by partitions. Both ends of the connecting rod (9) are provided with connectors (18) that are inserted into the slots (14). The grooves (15) are provided with connecting screws (16) that penetrate to the corresponding slots (14) and are threadedly connected to the connectors (18) in the slots (14).

3. The modularly assembled medium-frequency heating furnace according to claim 1, characterized in that: The connecting rod (9) has several notches (17) spaced apart along the axial direction of the connecting rod (9) and open at both ends. The notches (17) on the several connecting rods (9) arranged in a ring form a spiral channel, and the water cable is wound in the spiral channel.

4. The modularly assembled medium-frequency heating furnace according to claim 3, characterized in that: The adjacent end plates (7) of the adjacent splicing components (4) are provided with corresponding through holes (13) for the water cable (2) to pass through.

5. The modularly assembled medium-frequency heating furnace according to claim 1, characterized in that: The two end plates (7) inside the splicing assembly (4) are provided with support rings (8) around several connecting rods (9) on their opposite outer edges. The annular heat insulation partition (6) is placed on the outside of the support ring (8) and fixedly connected by insulating screws.

6. The modularly assembled medium-frequency heating furnace according to claim 5, characterized in that: The annular insulation partition (6) includes two symmetrically arranged semi-annular baffles (19). The inner surface of the semi-annular baffle (19) is provided with a semi-annular liner (21). The semi-annular liner (21) and the semi-annular baffle (19) cooperate to form a step (20) that is compatible with the support ring (8). The insulating screw passes through the semi-annular baffle (19) and is threadedly connected to the support ring (8).

7. The modularly assembled medium-frequency heating furnace according to claim 1, characterized in that: The inner furnace lining (3) is detachably fixed to the connecting rod (9) by insulating screws.

8. The modularly assembled medium-frequency heating furnace according to claim 1, characterized in that: The splicing assembly (4) has an end plate (7) for connecting with another splicing assembly (4) with mounting holes (12). The mounting holes (12) on the two end plates (7) connected to each other on the adjacent splicing assemblies (4) correspond to each other. The two adjacent splicing assemblies (4) are fixed together by passing an insulating bolt through the corresponding two mounting holes (12).

9. The modularly assembled medium-frequency heating furnace according to claim 1, characterized in that: The end of the inner furnace cavity lining (3) extends to the opening (11) of the outermost end plate (7) on the outer furnace body (1).

10. The modularly assembled medium-frequency heating furnace according to claim 1, characterized in that: The connecting rod (9) and the end plate (7) are detachably connected by a snap-fit ​​structure, which includes a snap-fit ​​elastic buckle and a snap-fit ​​groove.

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