CN220892908U

CN220892908U - Spiral heating rod device of muffle furnace and muffle furnace

Info

Publication number: CN220892908U
Application number: CN202322612122.3U
Authority: CN
Inventors: 李青; 李赫然; 贾攀龙; 胡恒广; 闫冬成; 商洪岭
Original assignee: Beijing Shengda Zhong'an Technology Co ltd; Hebei Guangxing Semiconductor Technology Co Ltd
Current assignee: Beijing Shengda Zhong'an Technology Co ltd; Hebei Guangxing Semiconductor Technology Co Ltd
Priority date: 2023-09-25
Filing date: 2023-09-25
Publication date: 2024-05-03
Anticipated expiration: 2033-09-25

Abstract

The present disclosure provides a spiral heating rod device of muffle furnace and muffle furnace, spiral heating rod device includes: the outer sleeve comprises a first end and a second end, and a mounting port is formed in the first end; the spiral heating rod passes through the mounting opening and is arranged in the outer sleeve; the first sleeve is arranged in the outer sleeve and positioned at the first end, and the rear end of the spiral heating rod is arranged in the first sleeve; the second sleeve is arranged in the outer sleeve and positioned at the second end, and the front end of the spiral heating rod is arranged in the second sleeve. The spiral heating rod device of the present disclosure sets up the spiral heating rod in the outer tube to support the rear end and the front end of spiral heating rod through first sleeve pipe and second sleeve pipe, thereby avoided easily leading to the problem of spiral heating rod fracture damage because of the cantilever structure.

Description

Spiral heating rod device of muffle furnace and muffle furnace

Technical Field

The disclosure relates to the technical field of glass processing equipment, in particular to a spiral heating rod device of a muffle furnace and the muffle furnace.

Background

In the overflow process for producing glass, the glass is always in a controlled temperature-reduced state in the forming zone. The overflow brick of the muffle furnace in the forming area plays a decisive role in the distribution of glass in the horizontal direction, and the distribution of the glass on the overflow brick can be effectively changed by controlling the temperature of the periphery of the overflow brick of the muffle furnace, and the temperature of the periphery of the overflow brick is mainly regulated by the heating rods distributed in the furnace chamber of the muffle furnace.

The prior art provides a muffle furnace heating device and a muffle furnace (CN 211311296U), wherein the heating device comprises a heating rod and insulating sleeves, a heat-preserving structure and sealing sleeves which are sleeved at two ends of the heating rod; the insulating sleeve is positioned between the heating rod and the heat insulation structure, one side end face of the sealing sleeve is contacted with the insulating sleeve, the edge of the side end face of the sealing sleeve is provided with an axial bulge, and the end face of the axial bulge is contacted with the surface of the heat insulation structure. The muffle furnace comprises a shell, an overflow groove and a heating device; the overflow groove and the heating device are both positioned inside the shell, the overflow groove and the heat insulation structure are both connected with the inner wall of the shell, and the heating rod is arranged along the horizontal direction of the overflow groove.

The heating rod is divided into a common silicon carbide rod which penetrates through the inside of the furnace chamber and is parallel to the length direction of the overflow brick and a spiral heating rod with one end arranged in a cantilever manner. The spiral heating rod is mainly used for finely adjusting the distribution of the local temperature field of the overflow brick, plays a vital role in the quality adjustment of molding, and can influence the local glass distribution once the spiral heating rod fails. However, the spiral heating rod is usually in a cantilever structure, so that the problem of breakage and damage of the spiral heating rod is easily caused. Based on this, how to prevent the breakage of the spiral heating rod of the muffle furnace damages the problems that the person skilled in the art needs to consider.

Disclosure of utility model

One technical problem to be solved by the present disclosure is the above-mentioned problem of how to prevent breakage and damage of the screw heating rod of the muffle furnace.

To solve the above technical problem, an embodiment of the present disclosure provides a spiral heating rod device of a muffle furnace, including: the outer sleeve comprises a first end and a second end, and a mounting port is formed in the first end; the spiral heating rod passes through the mounting opening and is arranged in the outer sleeve; the first sleeve is arranged in the outer sleeve and positioned at the first end, and the rear end of the spiral heating rod is arranged in the first sleeve; the second sleeve is arranged in the outer sleeve and positioned at the second end, and the front end of the spiral heating rod is arranged in the second sleeve.

In some embodiments, the second sleeve includes an insulating ring open at both ends, and the front end of the helical heating rod is disposed within the insulating ring through an opening in one end of the insulating ring.

In some embodiments, threads are provided within the insulating ring for securing the front end of the helical heating rod within the insulating ring.

In some embodiments, a third sleeve is disposed within the outer sleeve and in a middle portion of the outer sleeve for supporting a middle portion of the helical heating rod.

In some embodiments, the third sleeve includes a plurality.

In some embodiments, a thermal insulating material is disposed over the mounting port.

In some embodiments, the spiral heating rod comprises a silicon carbide rod.

In some embodiments, the outer sleeve comprises a silicon carbide tube.

On the other hand, the embodiment of the disclosure also provides a muffle furnace, which comprises the spiral heating rod device of the muffle furnace.

In some embodiments, the spiral heater rod assembly includes a plurality of

According to the technical scheme, the spiral heating rod device of the muffle furnace and the muffle furnace are provided, and the spiral heating rod device is characterized in that the spiral heating rod is arranged in the outer sleeve, and the rear end and the front end of the spiral heating rod are supported through the first sleeve and the second sleeve, so that the problem that the spiral heating rod is broken and damaged due to a cantilever structure is avoided; the front end of the spiral heating rod is supported by the insulating rings with openings at two ends, and meanwhile, the problem that heat at the front end of the spiral heating rod cannot be discharged is avoided; the third sleeve is arranged to enable the stress of the spiral heating rod to be more reasonable and uniform, so that the safety of the spiral heating pipe is further ensured; the heat insulation material is arranged, so that the problem of energy waste caused by overflow of heat generated by the spiral heating pipe from the mounting port is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

FIG. 1 is a cross-sectional view of a helical heating rod device disclosed in an embodiment of the present disclosure;

FIG. 2 is a partial schematic view of a helical heating rod apparatus according to an embodiment of the present disclosure;

Fig. 3 is a schematic view of an insulating ring disclosed in an embodiment of the present disclosure.

Reference numerals illustrate:

1. An outer sleeve; 2, an installation port; 3. a spiral heating rod; 4. a first sleeve; 5. a second sleeve; 6. an insulating ring; 7. thermal insulation material.

Detailed Description

Embodiments of the present disclosure are described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the disclosure and not to limit the scope of the disclosure, which may be embodied in many different forms and not limited to the specific embodiments disclosed herein, but rather to include all technical solutions falling within the scope of the claims.

The present disclosure provides these embodiments in order to make the present disclosure thorough and complete, and fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be construed as exemplary only and not limiting unless otherwise specifically stated.

In the description of the present disclosure, unless otherwise indicated, the meaning of "plurality" is greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present disclosure. When the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.

Furthermore, the use of the terms first, second, and the like in this disclosure do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error. The word "comprising" or "comprises" and the like means that elements preceding the word encompass the elements recited after the word, and not exclude the possibility of also encompassing other elements.

It should also be noted that, in the description of the present disclosure, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the present disclosure may be understood as appropriate by those of ordinary skill in the art. When a particular device is described as being located between a first device and a second device, there may or may not be an intervening device between the particular device and either the first device or the second device.

All terms used in the present disclosure have the same meaning as understood by one of ordinary skill in the art to which the present disclosure pertains, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.

As mentioned in the above background art, since the spiral heating rod of the muffle furnace is generally in a cantilever structure, the problem of breakage and damage of the spiral heating rod is easily generated. Accordingly, the present inventors have provided, in one or more embodiments, a screw heating rod apparatus of a muffle furnace and a muffle furnace, which avoid the problem of breakage damage of the screw heating rod due to a cantilever structure by disposing the screw heating rod in an outer jacket and supporting rear and front ends of the screw heating rod through a first jacket and a second jacket. Which is believed to solve one or more of the problems of the prior art.

To the technical problem that the foregoing proposes, the present disclosure provides a spiral heating rod device of a muffle furnace, as shown in fig. 1 and fig. 2, including: the outer sleeve 1, the outer sleeve 1 includes first end and second end, there are mounting ports 2 on the first end; the spiral heating rod 3 passes through the mounting port 2 and is arranged in the outer sleeve 1; a first sleeve 4, the first sleeve 4 is arranged in the outer sleeve 1 and positioned on the first end, and the rear end of the spiral heating rod 3 is arranged in the first sleeve 4; and a second sleeve 5, the second sleeve 5 is arranged in the outer sleeve 1 and positioned on the second end, and the front end of the spiral heating rod 3 is arranged in the second sleeve 5.

Specifically, the spiral heating rod 3, the outer sleeve 1, the first sleeve 4 and the second sleeve 5 are coaxially arranged, and the outer sleeve 1 is made of a material with high thermal conductivity, so that heat generated by the spiral heating rod 3 is transferred into the muffle furnace through the outer sleeve 1. Further, the outer sleeve 1 should have sufficient structural strength, and the lengths of the first sleeve 4 and the second sleeve 5 are not limited, so long as the two ends of the spiral heating rod 3 can be supported, and breakage of the spiral sleeve caused by uneven stress is avoided. The outer sleeve 1, the first sleeve 4 and the second sleeve 5 can be integrally formed, the first sleeve 4 can be made of high-temperature resistant materials, and the second sleeve 5 can be made of corundum ceramics.

Compared with the prior art, the spiral heating rod device of the muffle furnace has the advantages that the spiral heating rod 3 is arranged in the outer sleeve 1, and the rear end and the front end of the spiral heating rod 3 are supported through the first sleeve 4 and the second sleeve 5, so that the problem that the spiral heating rod 3 is broken and damaged easily due to a cantilever structure is solved.

In some embodiments, as shown in fig. 3, the second sleeve 5 includes an insulating ring 6 open at both ends, and the front end of the spiral heating rod 3 is disposed in the insulating ring 6 through an opening on one end of the insulating ring 6. Through both ends open-ended insulating ring 6, can make the front end of spiral heating rod 3 pass the opening on insulating ring 6 one end and install in insulating ring 6, the heat that rotatory heating rod front end produced can be through the opening on insulating ring 6 other end for outer tube 1 simultaneously, has avoided spiral heating rod 3 front end heat unable exhaust's problem, has also avoided spiral heating rod 3 front end heat to pile up and fragile spiral heating pipe's problem simultaneously.

In some embodiments, threads are provided in the insulating ring 6 for securing the front end of the helical heating rod 3 within the insulating ring 6. The front end of the spiral heating rod 3 is fixed in the insulating ring 6 through threads, so that the problem that the spiral heating rod 3 is damaged due to the fact that the spiral heating rod 3 falls off from the insulating ring 6 is avoided. Furthermore, the inner wall of the insulating ring 6 can also adopt a stepped open form, so that the heat transfer at the front end of the spiral heating rod 3 is facilitated while the front end of the spiral heating rod 3 is fixed.

In some embodiments, a third sleeve is further included, which is disposed within the outer sleeve 1 and is located in the middle of the outer sleeve 1 for supporting the middle of the helical heating rod 3. The third sleeve is arranged to enable the stress of the spiral heating rod 3 to be more reasonable and uniform, and the safety of the spiral heating pipe is further guaranteed.

In some embodiments, the third sleeve includes a plurality. According to the length of the spiral heating rod 3, a plurality of third sleeves can be arranged under the condition that the heat transfer of the spiral heating pipe is not affected, so that the rationality of the stress of the spiral heating rod 3 is ensured. In particular, the plurality of third bushings may be equally spaced.

In some embodiments, as shown in fig. 1, a thermal insulating material 7 is provided on the mounting port 2. The heat insulation material 7 avoids the problem that the heat generated by the spiral heating pipe overflows from the mounting port 2 to generate energy waste

In some embodiments, the spiral heating rod 3 comprises a silicon carbide rod. The silicon carbide rod has the characteristics of strong heat radiation capability, quick temperature rise and strong oxidation resistance in a thermal state. The silicon carbide rod can effectively control the temperature of glass liquid in the muffle furnace, and the service life of the spiral heating rod 3 is prolonged.

In some embodiments, the outer sleeve 1 comprises a silicon carbide tube. Because the silicon carbide tube has certain structural strength and good heat transfer performance, the heat generated by the spiral heating rod 3 can be effectively transferred into the muffle furnace while supporting the spiral heating rod 3.

In addition, the utility model also provides a muffle furnace, which comprises the spiral heating rod device of the muffle furnace. The problem of breakage of the spiral heating rod 3 is avoided through the spiral heating rod device, and normal production of the muffle furnace is guaranteed.

In some embodiments, the spiral heater rod apparatus includes a plurality of spiral heater rod apparatuses. The uniformity of the temperature field in the muffle furnace is further ensured through the plurality of spiral heating rod devices.

In summary, compared with the prior art, the present disclosure provides a spiral heating rod device of a muffle furnace and a muffle furnace, wherein the spiral heating rod device is configured such that a spiral heating rod 3 is disposed in an outer sleeve 1, and a rear end and a front end of the spiral heating rod 3 are supported by a first sleeve 4 and a second sleeve 5, so that the problem that the spiral heating rod 3 is easily broken and damaged due to a cantilever structure is avoided; the front end of the spiral heating rod 3 is supported by the insulating rings 6 with openings at two ends, and meanwhile, the problem that heat at the front end of the spiral heating rod 3 cannot be discharged is avoided; the third sleeve is arranged to enable the stress of the spiral heating rod 3 to be more reasonable and uniform, so that the safety of the spiral heating pipe is further ensured; the heat preservation and heat insulation material 7 is arranged, so that the problem of energy waste caused by overflow of heat generated by the spiral heating pipe from the mounting port 2 is avoided.

Thus, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that the foregoing embodiments may be modified and equivalents substituted for elements thereof without departing from the scope and spirit of the disclosure. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A spiral heating rod apparatus for a muffle furnace, comprising:

The outer sleeve (1), the outer sleeve (1) comprises a first end and a second end, and the first end is provided with a mounting port (2);

The spiral heating rod (3) passes through the mounting port (2) and is arranged in the outer sleeve (1);

a first sleeve (4), wherein the first sleeve (4) is arranged in the outer sleeve (1) and is positioned on the first end, and the rear end of the spiral heating rod (3) is arranged in the first sleeve (4); and

The second sleeve (5) is arranged in the outer sleeve (1) and is positioned at the second end, and the front end of the spiral heating rod (3) is arranged in the second sleeve (5).

2. A screw-type heating rod device for a muffle furnace according to claim 1, wherein the second sleeve (5) comprises an insulating ring (6) open at both ends, and the front end of the screw-type heating rod (3) is disposed in the insulating ring (6) through an opening in one end of the insulating ring (6).

3. A screw-type heating rod device of a muffle furnace according to claim 2, characterized in that the insulating ring (6) is provided with screw threads for fixing the front end of the screw-type heating rod (3) in the insulating ring (6).

4. The screw-type heating rod device of a muffle furnace according to claim 1, further comprising a third sleeve arranged inside the outer sleeve (1) in the middle of the outer sleeve (1) for supporting the middle of the screw-type heating rod (3).

5. The muffle screw heater of claim 4 wherein said third sleeve comprises a plurality of sleeves.

6. The spiral heating rod device of the muffle furnace according to claim 1, wherein the mounting port (2) is provided with a heat-insulating material (7).

7. A screw-type heating rod arrangement for a muffle according to claim 1, wherein the screw-type heating rod (3) comprises a silicon carbide rod.

8. A spiral heating rod device of a muffle according to claim 1, wherein the outer jacket tube (1) comprises a silicon carbide tube.

9. A muffle comprising a spiral heating rod apparatus of any of claims 1-8.

10. The muffle of claim 9 wherein said spiral heater bar means comprises a plurality of said spiral heater bar means.