CN216074101U

CN216074101U - Molybdenum heat shield

Info

Publication number: CN216074101U
Application number: CN202122801882.XU
Authority: CN
Inventors: 李淇
Original assignee: Luoyang Yuxiang Technology Co ltd
Current assignee: Luoyang Yuxiang Technology Co ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-03-18
Anticipated expiration: 2031-11-16

Abstract

The utility model belongs to the technical field of heat shields and discloses a molybdenum heat shield which comprises a bottom plate, wherein the top surface of the bottom plate is fixedly provided with the heat shield, the outer side surface of the heat shield is fixedly provided with a reinforcing strip, the side surfaces of the heat shield and the reinforcing strip are respectively inserted with a positioning screw rod, the two ends of the positioning screw rod are respectively meshed with an inner connecting nut and an outer connecting nut, the middle part of the bottom plate is fixedly provided with a heat dissipation ring, the side wall of the heat dissipation ring is fixedly provided with a connecting metal wire, and the middle part of the connecting metal wire is movably connected with a closing plate. According to the utility model, the reinforcing strips are arranged on the side wall of the heat shield, the triangular reinforcing strips have good stability and higher strength in mechanics, and can play a role in supporting and reinforcing the heat shield when the device works, so that the heat shield is prevented from being heated and deformed in a high-temperature environment, the uniformity of a temperature field in the device is ensured, the damage of the device is avoided, and the service life of the device is prolonged.

Description

Molybdenum heat shield

Technical Field

The utility model belongs to the technical field of heat shields, and particularly relates to a molybdenum heat shield.

Background

The molybdenum heat shield is an important heat preservation structure of the sapphire single crystal furnace, the main function of the molybdenum heat shield is to ensure the temperature uniformity of a hearth thermal field and improve the heat energy utilization rate, and the heat field temperature for the growth of the sapphire single crystal exceeds 2000 ℃, so that the molybdenum heat shield has higher requirements on the heat resistance and the strength of the heat shield in the use environment.

Most of the existing molybdenum heat shields are composed of seven layers of heat insulation bottles, and each layer of heat insulation bottles are connected through a rectangular groove, but the heat shields can be heated to expand when in use and are easily deformed when being heated in high-temperature environments such as 1600 ℃, so that the temperature field is uneven, and the service life of the device is shortened.

The current molybdenum heat shield is connected through the riveting mostly between every layer, after the riveting, can not carry out solitary dismantlement between every layer heat shield, but the molybdenum heat shield at the during operation, its inside temperature is progressively decreased from inside to outside, and the operating temperature of the heat shield of inlayer is the highest, and life is minimum, when the heat shield of inlayer damages, then need change whole device to lead to the use cost of device higher.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provides a molybdenum heat shield which has the advantages of prolonging the service life of the device and reducing the use cost of the device.

In order to achieve the purpose, the utility model provides the following technical scheme: molybdenum heat shield, comprising a base plate, the top surface fixed mounting of bottom plate has the heat shield, the lateral surface fixed mounting of heat shield has the enhancement strip, the heat shield all pegs graft with the side of strengthening the strip and has the positioning screw, the both ends of positioning screw have interior coupling nut and outer coupling nut respectively in the meshing, the middle part fixed mounting of bottom plate has the radiating ring, the lateral wall fixed mounting of radiating ring has the connection wire, the middle part swing joint of connecting the wire has the closure plate.

As a preferred technical solution of the present invention, the reinforcing strips are uniformly distributed on the outer side surface of the heat shield, the reinforcing strips are triangular, the height values of the reinforcing strips are equal to the height value of the heat shield, the reinforcing strips are installed on the side wall of the heat shield, and the triangular reinforcing strips have good stability in mechanics, and can support and reinforce the heat shield, so as to prevent the heat shield from deforming when heated.

As a preferable technical scheme of the utility model, the number of the heat shields is seven, the seven heat shields are fixedly arranged on the top surface of the bottom plate and are all circular, the heating raw material is placed in the seven heat shields, then the device is heated, so that the temperature in the device reaches the temperature required by the heating raw material, and the seven heat shields are made of molybdenum, so that the heat insulation effect is good.

As a preferred technical solution of the present invention, the positioning screw penetrates through seven heat shields, two ends of each of the seven heat shields are respectively located at inner and outer sides of the seven heat shields, when one of the seven heat shields is damaged, the inner connection nut and the outer connection nut are respectively screwed off from two ends of the positioning screw, and then the positioning screw is pulled out of the side walls of the seven heat shields, at this time, one of the seven heat shields can be pulled out and replaced.

As a preferable technical scheme of the utility model, the closing plate is movably connected in the inner cavity of the heat dissipation ring, the outer diameter value of the closing plate is equal to the inner diameter value of the heat dissipation ring, the bottom of the bottom plate is blown, and after the wind contacts with the closing plate, the closing plate is blown and rotates around the connecting metal wire, so that the middle part of the bottom plate is communicated with the outside, convection is formed between the bottom plate and the outside environment, and the rapid heat dissipation in the device can be realized.

As a preferred technical solution of the present invention, the inner coupling nut contacts an inner wall of the innermost heat shield, the outer coupling nut contacts the reinforcing bar, the inner coupling nut and the outer coupling nut fix the lengths of the positioning screws positioned in the seven heat shields, thereby realizing stable fixation between the seven heat shields, and quick connection and disconnection can be realized by a meshed connection manner.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the reinforcing strips are arranged on the side wall of the heat shield, the triangular reinforcing strips have good stability and higher strength in mechanics, and can play a role in supporting and reinforcing the heat shield when the device works, so that the heat shield is prevented from being heated and deformed in a high-temperature environment, the uniformity of a temperature field in the device is ensured, the damage of the device is avoided, and the service life of the device is prolonged.

2. According to the utility model, the positioning screws are inserted into the side walls of the seven heat shields, the positioning screws are used for relatively fixing the positions of the seven heat shields, when a certain heat shield is damaged, only the bolts which correspond to the lower part of the heat shield and are connected with the bottom plate are needed to be detached, then the inner connecting nuts and the outer connecting nuts are taken down from the two ends of the positioning screws, and then the positioning screws are pulled out, so that the heat shield can be independently replaced, and the use cost of the device is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the structure of the present invention;

FIG. 3 is an enlarged view of the point A in the structure of FIG. 2.

In the figure: 1. a base plate; 2. a heat shield; 3. a reinforcing strip; 4. positioning a screw rod; 5. an inner connecting nut; 6. a heat dissipation ring; 7. connecting a metal wire; 8. a closing plate; 9. and the outer connecting nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, the molybdenum heat shield provided by the utility model comprises a bottom plate 1, a heat shield 2 is fixedly installed on the top surface of the bottom plate 1, a reinforcing strip 3 is fixedly installed on the outer side surface of the heat shield 2, positioning screws 4 are respectively inserted into the side surfaces of the heat shield 2 and the reinforcing strip 3, inner connecting nuts 5 and outer connecting nuts 9 are respectively meshed with the two ends of the positioning screws 4, a heat dissipation ring 6 is fixedly installed in the middle of the bottom plate 1, a connecting metal wire 7 is fixedly installed on the side wall of the heat dissipation ring 6, and a closing plate 8 is movably connected in the middle of the connecting metal wire 7.

Wherein, strengthen 3 evenly distributed of strip at the lateral surface of heat shield 2, strengthen the shape of strip 3 and be triangle-shaped, strengthen the height value of strip 3 and the height value of heat shield 2 equal, strengthen strip 3 at the lateral wall installation of heat shield 2, triangle-shaped strengthens strip 3 and has good stability in the mechanics, can play the effect of supporting the enhancement to heat shield 2 to avoid heat shield 2 to receive the thermal deformation.

The seven heat shields 2 are all arranged on the top surface of the bottom plate 1, the seven heat shields 2 are all in a circular ring shape, heating raw materials are placed inside the seven heat shields 2, then the device is heated, the temperature inside the device reaches the temperature required by the heating raw materials, and the seven heat shields 2 are made of molybdenum and have a good heat preservation effect.

The positioning screw rods 4 penetrate through the seven heat shields 2, two ends of each heat shield 2 are respectively located on the inner side and the outer side of each heat shield 2, when one of the seven heat shields 2 is damaged, the inner connecting nuts 5 and the outer connecting nuts 9 are respectively screwed off from two ends of each positioning screw rod 4, then the positioning screw rods 4 are pulled out of the side walls of the seven heat shields 2, and at the moment, one of the seven heat shields 2 can be pulled out and replaced.

Wherein, 8 swing joint of closing plate is in the inner chamber of radiating ring 6, and the external diameter value of closing plate 8 equals the internal diameter value of radiating ring 6, bloies bottom plate 1, and wind can blow closing plate 8 and rotatory around connecting wire 7 after contacting with closing plate 8, makes bottom plate 1 communicate middle part and external world to form the convection current with external environment, can realize dispelling the heat in the device fast.

Wherein, the contact of the inner wall of interconnection coupling nut 5 and the heat screen 2 of the most inboard, outer coupling nut 9 with strengthen the contact of strip 3, interconnection coupling nut 5 and outer coupling nut 9 fix being located seven 2 interior positioning screw rod's of heat screen length 4, realize stabilizing fixedly between seven heat screens 2 to through the connected mode of meshing, can realize quick connection and dismantlement.

The working principle and the using process of the utility model are as follows:

during work, heating raw materials are placed inside the seven heat shields 2, then the device is heated, the temperature inside the device reaches the temperature required by the heating raw materials, and the seven heat shields 2 are made of molybdenum, so that a good heat preservation effect is achieved;

when one of the seven heat shields 2 is damaged, the inner connecting nut 5 and the outer connecting nut 9 are respectively screwed off from the two ends of the positioning screw rod 4, then the positioning screw rod 4 is pulled out of the side walls of the seven heat shields 2, and at the moment, one of the seven heat shields 2 can be pulled out and replaced;

after the device works, the bottom of the bottom plate 1 is blown, and after the wind contacts the closed plate 8, the closed plate 8 is blown and rotates around the connecting metal wire 7, so that the middle of the bottom plate 1 is communicated with the outside, convection is formed between the bottom plate and the outside, and the inside of the device can be rapidly cooled;

through strengthening the strip 3 at the lateral wall installation of heat shield 2, triangle-shaped's strengthening strip 3 has good stability in mechanics, can play the effect that supports the enhancement to heat shield 2 to avoid heat shield 2 to receive thermal deformation.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Molybdenum heat shield, including bottom plate (1), its characterized in that: the heat shield is characterized in that the heat shield (2) is fixedly mounted on the top surface of the bottom plate (1), the reinforcing strips (3) are fixedly mounted on the outer side surfaces of the heat shield (2), the positioning screw rods (4) are inserted into the side surfaces of the heat shield (2) and the reinforcing strips (3), the two ends of each positioning screw rod (4) are respectively meshed with an inner connecting nut (5) and an outer connecting nut (9), the heat dissipation ring (6) is fixedly mounted at the middle of the bottom plate (1), the connecting metal wire (7) is fixedly mounted on the side wall of the heat dissipation ring (6), and the closing plate (8) is movably connected to the middle of the connecting metal wire (7).

2. The molybdenum heat shield as defined in claim 1, wherein: strengthen strip (3) evenly distributed at the lateral surface of heat-shield (2), the shape of strengthening strip (3) is triangle-shaped, the height value of strengthening strip (3) and the height value of heat-shield (2) are equal.

3. The molybdenum heat shield as defined in claim 1, wherein: seven heat shields (2) are provided, the seven heat shields (2) are fixedly arranged on the top surface of the bottom plate (1), and the seven heat shields (2) are all circular.

4. The molybdenum heat shield as defined in claim 1, wherein: the positioning screw rod (4) penetrates through the seven heat shields (2), and two ends of each heat shield (2) are respectively positioned on the inner side and the outer side of each heat shield (2).

5. The molybdenum heat shield as defined in claim 1, wherein: the closing plate (8) is movably connected in the inner cavity of the heat dissipation ring (6), and the outer diameter value of the closing plate (8) is equal to the inner diameter value of the heat dissipation ring (6).

6. The molybdenum heat shield as defined in claim 1, wherein: the inner connecting nut (5) is in contact with the inner wall of the innermost heat shield (2), and the outer connecting nut (9) is in contact with the reinforcing strip (3).