Sintering furnace for silicon nitride production

Abstract

The utility model relates to the technical field of sintering furnaces, in particular to a sintering furnace for silicon nitride production, which is characterized in that two sides of a guide groove are provided with a fixing seat and a limiting rod penetrating through the guide groove and the fixing seat, the outer end of the limiting rod is fixedly provided with a driving rod, and a spring penetrated by the limiting rod is arranged between a limiting plate and the fixing seat; second motors are fixedly arranged on the two sides of the sintering furnace body, driving shafts are arranged at the output ends of the second motors, the driving shafts are meshed with the driving rods, when the door plate ascends to the designated position, the second motors are started, the driving rods can drive the limiting rods to move through the meshing effect, at the moment, springs rebound, the limiting plates can make contact with the sintering furnace body, and therefore the sintering furnace body is protected. And one end of the limiting rod penetrates through the guide groove and is positioned at the lower end of the door plate, so that a limiting structure can be provided for the door plate.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering furnaces, in particular to a sintering furnace for producing silicon nitride. Background Art

[0002] As we all know, silicon nitride is an inorganic material composed of nitrogen and silicon elements. It has excellent high temperature, wear resistance, insulation and chemical stability, so it has important application value in many fields. In the production process of silicon nitride, a sintering furnace is required. The sintering furnace is usually composed of an electric heating system, a temperature control system and a furnace body.

[0003] When the existing furnace body is in use, it is usually necessary to manually place materials into the interior of the furnace body. During this process, the door panel of the furnace body lacks a limiting structure. When the door panel is subjected to external force, it is easy to close, which can easily injure workers by mistake and has a low safety factor. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a sintering furnace for producing silicon nitride.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sintering furnace for silicon nitride production, comprising a sintering furnace body and a door panel, a guide groove is symmetrically arranged at the front end of the sintering furnace body, guide blocks cooperating with the limit rod are symmetrically arranged on both sides of the door panel, a driving block is fixedly arranged on the top of the door panel, a first motor is fixedly arranged on the upper end of the sintering furnace body, a transmission shaft penetrating the driving block is provided at the output end of the first motor, the transmission shaft is threadedly connected to the driving block, a fixed seat and a limit rod penetrating the guide groove and the fixed seat are provided at both sides of the guide groove, a driving rod is fixedly arranged at the outer end of the limit rod, a limit plate located on the outer wall of the sintering furnace body is fixedly arranged on the limit rod, a spring penetrated by the limit rod is provided between the limit plate and the fixed seat, a second motor is fixedly arranged on both sides of the sintering furnace body, a driving shaft is provided at the output end of the second motor, and the driving shaft is meshed with the driving rod.

[0008] Furthermore, the present invention is improved in that the guide block and the guide groove are both rectangular structures.

[0009] Furthermore, an improvement of the present invention is that both the first motor and the second motor are servo motors.

[0010] In order to facilitate the assembly of the driving rod, the utility model has the following improvements: a positioning seat is fixedly provided at one end of the driving rod, the outer end of the limiting rod is inserted into the interior of the positioning seat, and the limiting rod is threadedly connected to the positioning seat.

[0011] Furthermore, the present invention is improved in that the limit rod, the fixing seat, the spring and the driving rod are all made of metal.

[0012] In order to facilitate assembly of the drive shaft, the present invention has an improvement in that the output end of the second motor is provided with a rotating shaft connected to the drive shaft, and the drive shaft is fixed to one end of the rotating shaft by means of screws.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a sintering furnace for silicon nitride production, which has the following beneficial effects:

[0015] In the sintering furnace for silicon nitride production, when the door panel rises to the specified position, the second motor is started, and the driving rod can drive the limit rod to move through the meshing effect. At this time, the spring rebounds, and the limit plate can contact the sintering furnace body. At this time, one end of the limit rod will pass through the guide groove and be located at the lower end of the door panel, thereby providing a limit structure for the door panel to avoid accidents during the loading and unloading of materials, and the safety factor is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the structure of the utility model Figure 3 ;

[0019] Figure 4 For this utility model Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0020] Figure 5 For this utility model Figure 3 A schematic diagram of the local enlarged structure at B in the middle;

[0021] In the figure: 1. sintering furnace body; 2. door panel; 3. guide groove; 4. guide block; 5. limit rod; 6. limit plate; 7. spring; 8. fixed seat; 9. drive rod; 10. drive shaft; 11. second motor; 12. drive block; 13. transmission shaft; 14. first motor; 15. positioning seat. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 The utility model is a sintering furnace for silicon nitride production, comprising a sintering furnace body 1 and a door panel 2, wherein a guide groove 3 is symmetrically arranged at the front end of the sintering furnace body 1, and guide blocks 4 cooperating with a limiting rod 5 are symmetrically arranged on both sides of the door panel 2, and a driving block 12 is fixedly arranged on the top of the door panel 2, and a first motor 14 is fixedly arranged on the upper end of the sintering furnace body 1, and a transmission shaft 13 penetrating the driving block 12 is arranged at the output end of the first motor 14, and the transmission shaft 13 is threadedly connected to the driving block 12, and a fixing seat 8 and a limiting rod 5 penetrating the guide groove 3 and the fixing seat 8 are arranged on both sides of the guide groove 3, and a driving rod 9 is fixedly arranged at the outer end of the limiting rod 5, and a limiting plate 6 located on the outer wall of the sintering furnace body 1 is fixedly arranged on the limiting rod 5, and a spring 7 penetrated by the limiting rod 5 is arranged between the limiting plate 6 and the fixing seat 8, and a second motor 11 is fixedly arranged on both sides of the sintering furnace body 1, and a driving shaft 10 is arranged at the output end of the second motor 11, and the driving shaft 10 is connected to the driving The movable rod 9 is engaged. In this structure, the silicon nitride material can be sintered inside the sintering furnace body 1. When it is necessary to add material to the inside of the sintering furnace body 1, the first motor 14 is started to rotate the transmission shaft 13. At this time, the driving block 12 can rise along the transmission shaft 13 through the action of the threaded structure. At this time, the door panel 2 will rise at the front end of the sintering furnace body 1. At this time, the guide block 4 will slide in the guide groove 3. At this time, the limit plate 6 will not contact the sintering furnace body 1, and one end of the limit rod 5 will not penetrate the guide groove 3, and the spring 7 is in a compressed state. When the door panel 2 rises to the specified position, the second motor 11 is started. The driving rod 9 can drive the limit rod 5 to move through the engagement. At this time, the spring 7 rebounds, which can make the limit plate 6 contact the sintering furnace body 1. At this time, one end of the limit rod 5 will penetrate the guide groove 3 and be located at the lower end of the door panel 2, thereby providing a limit structure for the door panel 2 to avoid accidents during the loading and unloading of materials, with a high safety factor.

[0024] Furthermore, the guide block 4 and the guide groove 3 may both be rectangular structures.

[0025] Furthermore, the first motor 14 and the second motor 11 may both be servo motors.

[0026] Furthermore, the limiting rod 5, the fixing seat 8, the spring 7 and the driving rod 9 can all be made of metal, and the limiting rod 5, the fixing seat 8, the spring 7 and the driving rod 9 can all be made of stainless steel.

[0027] In this structure, a positioning seat 15 is fixedly provided at one end of the driving rod 9, the outer end of the limiting rod 5 is inserted into the interior of the positioning seat 15, the limiting rod 5 is threadedly connected to the positioning seat 15, and the output end of the second motor 11 is provided with a rotating shaft connected to the driving shaft 10, and the driving shaft 10 is fixed to one end of the rotating shaft by screws, which can facilitate the assembly of the driving rod 9 and the driving shaft 10.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sintering furnace for producing silicon nitride, comprising a sintering furnace body (1) and a door panel (2), characterized in that: The front end of the sintering furnace body (1) is symmetrically provided with a guide groove (3); the two sides of the door panel (2) are symmetrically provided with guide blocks (4) cooperating with the limit rod (5); the top of the door panel (2) is fixedly provided with a driving block (12); the upper end of the sintering furnace body (1) is fixedly provided with a first motor (14); the output end of the first motor (14) is provided with a transmission shaft (13) passing through the driving block (12); the transmission shaft (13) is threadedly connected to the driving block (12); the two sides of the guide groove (3) are provided with a fixing seat (8) and a fixing seat (13) passing through the driving block (12); A guide groove (3) and a limiting rod (5) of a fixed seat (8), a driving rod (9) is fixedly arranged at the outer end of the limiting rod (5), a limiting plate (6) located on the outer wall of the sintering furnace body (1) is fixedly arranged on the limiting rod (5), a spring (7) penetrated by the limiting rod (5) is arranged between the limiting plate (6) and the fixed seat (8), a second motor (11) is fixedly arranged on both sides of the sintering furnace body (1), a driving shaft (10) is arranged at the output end of the second motor (11), and the driving shaft (10) is meshed with the driving rod (9).

2. A sintering furnace for silicon nitride production according to claim 1, characterized in that: The guide block (4) and the guide groove (3) are both rectangular structures.

3. A sintering furnace for silicon nitride production according to claim 2, characterized in that: The first motor (14) and the second motor (11) are both servo motors.

4. A sintering furnace for silicon nitride production according to claim 3, characterized in that: A positioning seat (15) is fixedly arranged at one end of the driving rod (9), the outer end of the limiting rod (5) is inserted into the interior of the positioning seat (15), and the limiting rod (5) is threadedly connected to the positioning seat (15).

5. A sintering furnace for silicon nitride production according to claim 4, characterized in that: The limiting rod (5), the fixing seat (8), the spring (7) and the driving rod (9) are all made of metal.

6. A sintering furnace for silicon nitride production according to claim 5, characterized in that: The output end of the second motor (11) is provided with a rotating shaft connected to the driving shaft (10), and the driving shaft (10) is fixed to one end of the rotating shaft by means of screws.

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