CN207797714U - The mounting structure of silicon carbide housing and Muffle furnace - Google Patents

Abstract

This disclosure relates to a kind of mounting structure of silicon carbide housing and Muffle furnace, the silicon carbide housing is used to be sleeved on the outside of silicon carbide heating rod, the furnace roof of the Muffle furnace offers through-hole, the silicon carbide housing is inserted into the through-hole and is crimped on the furnace roof, it is formed with annular protrusion on the furnace roof electrolysis of the silicon carbide housing, the furnace roof is formed with for annular groove corresponding with the annular protrusion, and the annular protrusion forms sealing cooperation with the annular groove.Annular protrusion forms sealing cooperation with annular groove, so that the furnace roof of silicon carbide housing and Muffle furnace fits closely, thermal current is avoided to leak from the junction of the two, dramatically reduce souring of the thermal current to silicon carbide housing, so as to avoid being sleeved on formation hole in junction outside silicon carbide, and then the service life of silicon carbide heating rod can be extended.

Description

The mounting structure of silicon carbide housing and Muffle furnace

Technical field

This disclosure relates to liquid crystal substrate glass production technical field, and in particular, to a kind of silicon carbide housing and Muffle furnace Mounting structure.

Background technology

Currently, liquid crystal substrate glass in being molded production process, is heated at the top of Muffle furnace using silicon carbide heating rod, Specially silicon carbide heating rod is put into silicon carbide housing, is together inserted into the preformed hole at the top of Muffle furnace, silicon carbide adds Heat is passed in Muffle furnace to achieve the purpose that heating by hot pin by silicon carbide housing.But due to silicon carbide housing and horse Not there is gap between the furnace roof of stove, the thermal current in Muffle furnace can be flowed out to by gap outside Muffle furnace.Thermal current is constantly It washes away, the gap location for being sleeved on itself and furnace roof outside silicon carbide is caused to form hole.After silicon carbide housing forms hole, silicon carbide heating Stick is directly exposed to outer so that silicon carbide heating rod is washed away by thermal current, so that silicon carbide heating rod uses the longevity Life greatly shortens.

Utility model content

Purpose of this disclosure is to provide a kind of mounting structure of silicon carbide housing and Muffle furnace, which can effectively prolong The service life of long silicon carbide heating rod.

To achieve the goals above, the disclosure provides a kind of mounting structure of silicon carbide housing and Muffle furnace, the carbonization Silicon housing is used to be sleeved on the outside of silicon carbide heating rod, and the furnace roof of the Muffle furnace offers through-hole, the silicon carbide housing It is inserted into the through-hole and is crimped on the furnace roof, annular protrusion is formed on the furnace roof electrolysis of the silicon carbide housing, it is described Furnace roof is formed with for annular groove corresponding with the annular protrusion, and the annular protrusion is formed with the annular groove and sealed Cooperation.

Optionally, the upper end of the silicon carbide housing is formed with housing flange, and the furnace roof electrolysis is that the housing is convex The lower surface of edge.

Optionally, the depth of the annular groove is more than the height of the annular protrusion.

Optionally, powdered heat-resisting material is placed in the annular groove, the annular protrusion is pressed in the powder On shape heat-resisting material.

Optionally, the powdered heat-resisting material is alumina powder, and the annular protrusion is pressed in the refractory seals On circle.

Optionally, it is provided with high-temperature resistant seal ring in the annular groove.

Optionally, the lower end closed of the silicon carbide housing, upper end open.

Optionally, the rectangular cross-section of the annular groove, the rectangular cross-section of the annular protrusion.

Through the above technical solutions, annular protrusion forms sealing cooperation with annular groove so that silicon carbide housing and Muffle The furnace roof of stove fits closely, and avoids thermal current and leaks from the junction of the two, dramatically reduces thermal current to carbonization The souring of silicon housing so as to avoid being sleeved on formation hole in junction outside silicon carbide, and then can extend silicon carbide heating The service life of stick.

Other feature and advantage of the disclosure will be described in detail in subsequent specific embodiment part.

Description of the drawings

Attached drawing is for providing further understanding of the disclosure, and a part for constitution instruction, with following tool Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings：

Fig. 1 is the sectional view of a kind of silicon carbide housing of embodiment of the disclosure and the mounting structure of Muffle furnace, is shown simultaneously Silicon carbide heating rod and corundum insulating bushing are gone out；

Fig. 2 is the sectional view of the silicon carbide housing of the prior art and the mounting structure of Muffle furnace, also shows silicon carbide Heating rod and corundum insulating bushing.

Reference sign

Corundum insulating bushing on 1 silicon carbide heating rod 2

21 flange of bush, 3 silicon carbide housing

31 housing flange, 311 furnace roof electrolysis

32 annular protrusion, 4 Muffle furnace

41 through-hole, 42 annular groove

The 5 corundum insulating bushings of powdered heat-resisting material 6 times

Specific implementation mode

The specific implementation mode of the disclosure is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched The specific implementation mode stated is only used for describing and explaining the disclosure, is not limited to the disclosure.

In the description of the disclosure, it is to be understood that the instructions such as term "upper", "lower", "left", "right", "front", "rear" Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the disclosure and simplification retouch It states, does not indicate or imply the indicated device or element must have a particular orientation and specific azimuth configuration and behaviour Make, therefore should not be understood as the limitation to the disclosure.

As shown in Fig. 2, when being heated to Muffle furnace 4 using silicon carbide heating rod 1, in order to avoid the high temperature shadow in Muffle furnace 4 Silicon carbide heating rod 1, can be sleeved in a silicon carbide housing 3, then again by carbon by the service life for ringing silicon carbide heating rod 1 SiClx housing 3 is inserted into together with silicon carbide heating rod 1 in the through-hole 41 of Muffle furnace furnace roof.Wherein, under silicon carbide heating rod 1 Portion extend into Muffle furnace 4 and is heated to it, and top is located at the outside of Muffle furnace 4, and (does not show in figure with external powering device Go out) it is connected.

Specifically, as shown in Fig. 2, silicon carbide housing 3 is overlapped on by its housing flange 31 on the furnace roof of Muffle furnace 4, two Person face connects with face to form closing.However, since furnace roof planarization is bad, so leakproofness between the two is poor, hot gas Stream can be formed in junction and be leaked.

In general, forming current loop due to silicon carbide housing 3 and silicon carbide heating rod 1 contact in order to prevent, weaken carbonization 1 heating effect of silicon heating rod.As shown in Fig. 2, a upper corundum can be arranged between silicon carbide housing 3 and silicon carbide heating rod 1 Insulating bushing 2 and a lower corundum insulating bushing 6, the top of silicon carbide heating rod 1 are surrounded by upper corundum insulating bushing 2, lower part It is supported by lower corundum insulating bushing 6.In this way, can prevent silicon carbide heating rod 1 from contacting conduction with silicon carbide housing 3.

As shown in Figure 1, present disclose provides a kind of mounting structure of silicon carbide housing and Muffle furnace, silicon carbide housing 3 is used In the outside for being sleeved on silicon carbide heating rod 1, the furnace roof of Muffle furnace 4 offers through-hole 41, and silicon carbide housing 3 is inserted into through-hole 41 simultaneously Be crimped on furnace roof, be formed with annular protrusion 32 on the furnace roof electrolysis 311 of silicon carbide housing 3, furnace roof be formed with for annular Raised 32 corresponding annular grooves 42, annular protrusion 32 form sealing cooperation with annular groove 42.Here, furnace roof electrolysis 311 The face contacted with the furnace roof of Muffle furnace 4 for silicon carbide housing 3.

Through the above technical solutions, annular protrusion 32 and annular groove 42 form sealing cooperation so that silicon carbide housing 3 with The furnace roof of Muffle furnace 4 fits closely, and avoids thermal current and leaks from the junction of the two, dramatically reduces thermal current pair The souring of silicon carbide housing 3 so as to avoid silicon carbide housing 3 from forming hole in junction, and then can extend carbonization The service life of silicon heating rod 1.

In the disclosure, in order to enable after annular protrusion 32 is inserted into annular groove 42, the lower face energy of housing flange 31 It is overlapped on the furnace roof of Muffle furnace 4, to further enhance sealing effect, it is preferable that the depth of annular groove 42 may be designed as greatly In the height of annular protrusion 32.

In a kind of embodiment of the disclosure, as shown in Figure 1, powdered heat-resisting material can be placed in annular groove 42 5, powdered heat-resisting material 5 is compacted by silicon carbide housing 3 under the effect of gravity.In this way, when annular protrusion 32 be pressed in it is powdered When on heat-resisting material 5, powdered heat-resisting material 5 can realize the sealed connection of annular protrusion 32 and annular groove 42.Here, Powdered heat-resisting material 5 can be any suitable high temperature resistant powder shape material, as long as annular protrusion 32 and annular can be realized The sealed connection of groove 42, such as silicon carbide powder, silicon oxide powder.Specifically, powdered heat-resisting material 5 can Think alumina powder.

In alternative embodiment, high-temperature resistant seal ring can be also set in annular groove 42, silicon carbide housing 3 exists High-temperature resistant seal ring is compressed under gravity, the sealing between same achievable silicon carbide housing 3 and furnace roof.

In the disclosure, the section of annular protrusion 32 and annular groove 42 can be any suitable shape.In a kind of reality It applies in mode, as shown in Figure 1, the rectangular cross-section of annular groove 42, the rectangular cross-section of annular protrusion 32, rectangular configuration are convenient for Processing.

In the disclosure, as shown in Figure 1, silicon carbide housing 3 is formed as cylindrical shape, lower end closed, upper end opens.On The flange of bush 21 of corundum insulating bushing 2 is pressed against on housing flange 31, and it is exhausted that the lower part of silicon carbide heating rod 1 is inserted into lower corundum In edge bushing 6, top is connected with external powering device.

The preferred embodiment of the disclosure is described in detail above in association with attached drawing, still, the disclosure is not limited to above-mentioned reality The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure Monotropic type, these simple variants belong to the protection domain of the disclosure.

It is further to note that specific technical features described in the above specific embodiments, in not lance In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the disclosure to it is various can The combination of energy no longer separately illustrates.

In addition, arbitrary combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally Disclosed thought equally should be considered as disclosure disclosure of that.

Claims (8)

1. a kind of mounting structure of silicon carbide housing and Muffle furnace, the silicon carbide housing (3) is for being sleeved on silicon carbide heating The outside of stick (1), which is characterized in that the furnace roof of the Muffle furnace (4) offers through-hole (41), and the silicon carbide housing (3) is inserted Enter the through-hole (41) and be crimped on the furnace roof, annular is formed on the furnace roof electrolysis (311) of the silicon carbide housing (3) Raised (32), the furnace roof are formed with for annular groove (42) corresponding with the annular protrusion (32), the annular protrusion (32) sealing cooperation is formed with the annular groove (42).

2. the mounting structure of silicon carbide housing and Muffle furnace according to claim 1, which is characterized in that outside the silicon carbide The upper end of set (3) is formed with housing flange (31), and the furnace roof electrolysis (311) is the lower surface of the housing flange (31).

3. the mounting structure of silicon carbide housing and Muffle furnace according to claim 1, which is characterized in that the annular groove (42) depth is more than the height of the annular protrusion (32).

4. the mounting structure of silicon carbide housing and Muffle furnace according to claim 1, which is characterized in that the annular groove (42) it is placed with powdered heat-resisting material (5) in, the annular protrusion (32) is pressed in the powdered heat-resisting material (5) On.

5. the mounting structure of silicon carbide housing and Muffle furnace according to claim 4, which is characterized in that described powdered resistance to High-temperature material (5) is alumina powder.

6. the mounting structure of silicon carbide housing and Muffle furnace according to claim 1, which is characterized in that the annular groove (42) it is provided with high-temperature resistant seal ring in, the annular protrusion (32) is pressed on the high-temperature resistant seal ring.

7. the mounting structure of silicon carbide housing and Muffle furnace according to claim 1, which is characterized in that outside the silicon carbide The lower end closed of (3) is covered, upper end opens.

8. the mounting structure of silicon carbide housing and Muffle furnace according to claim 1, which is characterized in that the annular groove (42) rectangular cross-section, the rectangular cross-section of the annular protrusion (32).