Medium-frequency diathermy furnace structure

Abstract

The utility model relates to the technical field of diathermy furnaces, in particular to a medium-frequency diathermy furnace structure which comprises a cylindrical shell, a plurality of mica strips, a copper pipe, a first insulating plate and a second insulating plate, and the mica strips are inserted end to end in the shell to form a cylindrical furnace lining. The copper pipe is arranged in the shell and surrounds the outer side of the furnace lining in a spiral mode. The first insulating plate is arranged between the furnace lining and the copper pipe, and the furnace lining and the copper pipe are detachably connected through the first insulating plate; the second insulating plate is arranged between the copper pipe and the shell, and the copper pipe and the shell are detachably connected through the second insulating plate; according to the medium-frequency diathermy furnace, the furnace lining is composed of the mica strips, the furnace lining is detachably connected with the copper pipe through the first insulating plate, and the copper pipe is detachably connected with the shell through the second insulating plate, so that the medium-frequency diathermy furnace is simple and light in structure, convenient to disassemble, and convenient to carry and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of diathermic furnaces, in particular to a medium frequency diathermic furnace structure. Background Art

[0002] A diathermic furnace is a high-temperature reaction equipment, which is mainly used for heating, drying, calcining and heat treating various substances. Its main working principle is to let high-temperature gas flow in the reaction chamber, so that the substances are exposed to high temperature and undergo chemical or physical changes.

[0003] Medium frequency heating furnaces usually have a layer of refractory material cast or built on the surface of the heating furnace as a furnace lining to increase the service life of the heating furnace and also improve the use effect of the heating furnace, such as a medium frequency heating furnace refractory structure disclosed in CN213300850U.

[0004] As in the above technical solution, the existing medium frequency heating furnace has a large deadweight due to the influence of the furnace lining, is difficult to carry, and is not convenient for maintenance. Moreover, when the furnace lining is damaged, it is difficult to disassemble and is not convenient for maintenance. Utility Model Content

[0005] In view of this, the utility model proposes a medium frequency heating furnace structure, which is provided with a furnace lining composed of mica strips, and the furnace lining is detachably connected to the copper tube through a first insulating plate, and the copper tube is detachably connected to the outer shell through a second insulating plate, so that the structure of the medium frequency heating furnace is relatively simple, light and easy to disassemble, and thus easy to carry and maintain.

[0006] The technical solution of the utility model is achieved in this way:

[0007] The utility model provides a medium frequency heating furnace structure, comprising a cylindrical shell, a plurality of mica strips, a copper tube, a first insulating plate and a second insulating plate, wherein:

[0008] A plurality of mica strips are plugged end to end inside the shell to form a cylindrical furnace lining, and the furnace lining and the shell are coaxially arranged;

[0009] The copper tube is arranged inside the shell and spirally surrounds the outside of the furnace lining;

[0010] The first insulating plate is disposed between the furnace lining and the copper tube, and the furnace lining and the copper tube are detachably connected via the first insulating plate;

[0011] The second insulating plate is disposed between the copper tube and the shell, and the copper tube and the shell are detachably connected via the second insulating plate.

[0012] On the basis of the above technical solution, preferably, a groove is provided on one end of the mica strip, and a protrusion is provided on the other end, wherein:

[0013] In two adjacent mica strips, the groove on one of the mica strips is plugged into the protrusion on the other mica strip.

[0014] Based on the above technical solution, preferably, the groove and the protrusion are both in a V shape.

[0015] On the basis of the above technical solution, preferably, the first insulating plate and the second insulating plate are in the shape of long strips, and the long sides of the first insulating plate and the second insulating plate are parallel to the axial direction of the furnace lining.

[0016] On the basis of the above technical solution, preferably, there are a plurality of first insulating plates and second insulating plates in a circumferential annular array along the furnace lining.

[0017] On the basis of the above technical solution, preferably, one end of the first insulating plate is fixedly connected to the mica strip, and the other end is connected to the copper tube by bolts.

[0018] On the basis of the above technical solution, preferably, one end of the second insulating plate is fixedly connected to the shell, and the other end is connected to the copper tube by bolts.

[0019] On the basis of the above technical solution, preferably, it further comprises a fixing ring, wherein:

[0020] The fixing ring is provided at each end of the furnace lining, and an annular groove is provided on the opposite ends of the two fixing rings;

[0021] One end of the furnace lining is embedded in one of the annular grooves, and the other end is embedded in the other annular groove.

[0022] On the basis of the above technical solution, preferably, it further includes an end cover, wherein:

[0023] The end cap is provided at each end of the shell, and the end cap and the shell are detachably connected;

[0024] A through hole is provided on the end cover along the axial direction of the outer shell, the through hole is concentric with the furnace lining, and the inner diameter of the through hole is equal to the inner diameter of the furnace lining.

[0025] On the basis of the above technical solution, preferably, a gap of 1-10 mm is reserved between the fixing ring and the adjacent end cover.

[0026] The medium frequency heating furnace structure of the utility model has the following beneficial effects compared with the prior art:

[0027] (1) The furnace lining is made of mica strips, and the furnace lining is detachably connected to the copper tube through the first insulating plate, and the copper tube is detachably connected to the shell through the second insulating plate, so that the structure of the medium frequency heating furnace consists of only three layers, so that its structure is simple and easy to disassemble, and thus convenient for transportation and maintenance.

[0028] (2) By providing V-shaped grooves and protrusions, the installation and positioning of several mica strips are facilitated and not easily misplaced, thereby facilitating the construction of the furnace lining.

[0029] (3) By setting a fixing ring, the shape of the furnace lining after construction is fixed and it is not easy to deform during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a three-dimensional diagram of the structure of a medium frequency heating furnace of the utility model;

[0032] Figure 2 It is a partial stereoscopic diagram of a medium frequency heating furnace structure of the utility model;

[0033] Figure 3 A top view of the furnace lining of the utility model;

[0034] Figure 4 for Figure 3 A magnified image of point A;

[0035] Figure 5 It is a partial top view of a medium frequency heating furnace structure of the utility model;

[0036] Figure 6 for Figure 5 A magnified view of point B;

[0037] Figure 7 A top view of the end cover of the utility model;

[0038] Figure 8 It is a top view of the fixing ring of the utility model;

[0039] In the figure: 1, shell; 2, mica strip; 3, copper tube; 4, insulating plate; 5, furnace lining; 6, fixing ring; 7, end cover; 31, connecting column; 41, first insulating plate; 42, second insulating plate; 201, groove; 202, protrusion; 601, ring groove; 701, through hole. DETAILED DESCRIPTION

[0040] The following will be combined with the specific implementation of the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] like Figure 1-8 As shown, a medium frequency heating furnace structure of the utility model includes a cylindrical shell 1, a plurality of mica strips 2, a copper tube 3, and an insulating plate 4, wherein the insulating plate 4 includes a first insulating plate 41 and a second insulating plate 42.

[0042] A plurality of mica strips 2 are plugged end to end inside the outer shell 1 to form a cylindrical furnace lining 5. The furnace lining 5 and the outer shell 1 are coaxially arranged. Specifically, the inner side of the furnace lining 5 is a heating space for the workpiece. A V-shaped groove 201 is arranged on one end of the mica strip 2, and a V-shaped protrusion 202 is arranged on the other end. Among them, among two adjacent mica strips 2, the groove 201 on one mica strip 2 is plugged with the protrusion 202 on the other mica strip 2. Through this structure, the installation and positioning of the plurality of mica strips 2 are facilitated, and it is not easy to be misplaced, thereby facilitating the construction of the furnace lining 5.

[0043] In order to maintain the shape of the furnace lining 5, a fixing ring 6 is provided at each end of the furnace lining 5, wherein an annular groove 601 is provided on the opposite ends of the two fixing rings 6; one end of the furnace lining 5 is embedded in one of the annular grooves 601, and the other end is embedded in the other annular groove 601, and the two ends of the furnace lining 5 are fixed by the fixing ring 6, so that it is not easy to get loose and deformed during use.

[0044] The copper tube 3 is arranged inside the shell 1 and spirally wrapped around the outer side of the furnace lining 5. After wrapping, the copper tube 3 is in the shape of a spiral line; the first insulating plate 41 is arranged between the furnace lining 5 and the copper tube 3, and the furnace lining 5 and the copper tube 3 are detachably connected through the first insulating plate 41; the second insulating plate 42 is arranged between the copper tube 3 and the shell 1, and the copper tube 3 and the shell 1 are detachably connected through the second insulating plate 42. In this structure, the first insulating plate 41 and the second insulating plate 42 are used to achieve insulation between the copper tube 3 and the furnace lining 5, and insulation between the copper tube 3 and the shell 1 to prevent short circuit, and at the same time, the copper tube 3, the furnace lining 5 and the shell 1 form a concentric circle structure, and at the same time, the structure of the medium frequency heating furnace is composed of only three layers, so that its structure is simple and easy to disassemble, and thus easy to carry and repair.

[0045] In the above structure, the first insulating plate 41 and the second insulating plate 42 are in the shape of long strips, and the long sides of the first insulating plate 41 and the second insulating plate 42 are parallel to the axial direction of the furnace lining 5, wherein there are a plurality of first insulating plates 41 and second insulating plates 42 in a circumferential annular array along the furnace lining 5, one end of the first insulating plate 41 is fixedly connected to the mica strip 2, and the other end is connected to the copper tube 3 by bolts, and one end of the second insulating plate 42 is fixedly connected to the outer shell 1, and the other end is connected to the copper tube 3 by bolts.

[0046] A plurality of connecting columns 31 are fixedly provided at the positions of the first insulating plate 41 and the second insulating plate 42 on the side of the connecting copper tube 3. The connecting columns 31 are threaded columns. The first insulating plate 41 and the second insulating plate 42 are provided with mounting holes for the connecting columns 31. During installation, the connecting columns 31 are inserted into the mounting holes, and nuts are screwed on the connecting columns 31. The first insulating plate 41 or the second insulating plate 42 is fixed by the engagement of the nuts with the threads.

[0047] In addition, the medium frequency heating furnace structure also includes an end cover 7, wherein one end cover 7 is provided at each end of the shell 1, and the end cover 7 and the shell 1 are detachably connected. Specifically, the end cover 7 and the shell 1 are connected by bolts. After the end cover 7 is installed, a gap of 1-10 mm is reserved between the fixing ring 6 and the adjacent end cover 7.

[0048] A through hole 701 is provided on the end cover 7 along the axial direction of the outer shell 1 . The through hole 701 is concentric with the furnace lining 5 , and the inner diameter of the through hole 701 is equal to the inner diameter of the furnace lining 5 , so as to facilitate the workpiece to enter and exit the furnace lining 5 .

[0049] The method of using a medium frequency heating furnace structure of the utility model is as follows:

[0050] First, several mica strips 2 are plugged end to end to form a cylindrical furnace lining 5, and fixing rings 6 are fixedly installed at both ends of the furnace lining 5. Then, the spiral copper tube 3 is put on the outside of the furnace lining 5, and the first insulating plate 41 and the connecting column 31 on the side of the copper tube 3 are fixedly connected by bolts. Then, the outer shell 1 is put on the outside of the copper tube 3, and the second insulating plate 42 and the outer shell 1 are fixedly connected by bolts. Finally, end covers 7 are fixedly installed at both ends of the outer shell 1.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A medium frequency heating furnace structure, comprising a cylindrical housing (1), characterized in that: It also includes a plurality of mica strips (2), a copper tube (3), a first insulating plate (41) and a second insulating plate (42), wherein: A plurality of mica strips (2) are plugged end to end into the interior of the outer shell (1) to form a cylindrical furnace lining (5), and the furnace lining (5) and the outer shell (1) are coaxially arranged; The copper tube (3) is arranged inside the outer shell (1) and surrounds the outer side of the furnace lining (5) in a spiral manner; The first insulating plate (41) is arranged between the furnace lining (5) and the copper tube (3), and the furnace lining (5) and the copper tube (3) are detachably connected via the first insulating plate (41); The second insulating plate (42) is arranged between the copper tube (3) and the outer shell (1), and the copper tube (3) and the outer shell (1) are detachably connected via the second insulating plate (42).

2. A medium frequency heating furnace structure as claimed in claim 1, characterized in that: The mica strip (2) is provided with a groove (201) at one end and a protrusion (202) at the other end, wherein: In two adjacent mica strips (2), the groove (201) on one of the mica strips (2) and the protrusion (202) on the other mica strip (2) are plugged into each other.

3. A medium frequency heating furnace structure as claimed in claim 2, characterized in that: The groove (201) and the protrusion (202) are both in a V shape.

4. The medium frequency heating furnace structure according to claim 1, characterized in that: The first insulating plate (41) and the second insulating plate (42) are in the shape of long strips, and the long sides of the first insulating plate (41) and the second insulating plate (42) are parallel to the axial direction of the furnace lining (5).

5. A medium frequency heating furnace structure as claimed in claim 4, characterized in that: There are a plurality of first insulating plates (41) and second insulating plates (42) arranged in a circumferential annular array along the furnace lining (5).

6. The medium frequency heating furnace structure according to claim 1, characterized in that: One end of the first insulating plate (41) is fixedly connected to the mica strip (2), and the other end is connected to the copper tube (3) via bolts.

7. A medium frequency heating furnace structure as claimed in claim 6, characterized in that: One end of the second insulating plate (42) is fixedly connected to the housing (1), and the other end is connected to the copper tube (3) via bolts.

8. The medium frequency heating furnace structure according to claim 1, characterized in that: It also includes a fixing ring (6), wherein: The fixing ring (6) is provided at each end of the furnace lining (5), and an annular groove (601) is provided on the opposite ends of the two fixing rings (6); One end of the furnace lining (5) is embedded in one of the annular grooves (601), and the other end is embedded in the other annular groove (601).

9. A medium frequency heating furnace structure as claimed in claim 8, characterized in that: Also included is an end cap (7), wherein: The end cover (7) is provided at each end of the housing (1), and the end cover (7) and the housing (1) are detachably connected; A through hole (701) is provided on the end cover (7) along the axial direction of the outer shell (1); the through hole (701) and the furnace lining (5) are concentric, and the inner diameter of the through hole (701) is equal to the inner diameter of the furnace lining (5).

10. A medium frequency heating furnace structure as claimed in claim 9, characterized in that: A gap of 1-10 mm is reserved between the fixing ring (6) and the adjacent end cover (7).

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