A crystallization device for sintering a molybdenum disilicide electric heating element

Abstract

The utility model relates to molybdenum disilicide electric heating element production equipment technical field, concretely is a kind of molybdenum disilicide electric heating element sintering crystallization device, including support plate, the bottom fixed mounting of support plate has support frame, the top one side fixed mounting of support plate has crystallization furnace body, and one end of crystallization furnace body is provided with furnace cover plate.This kind of molybdenum disilicide electric heating element sintering crystallization device, by the cooperation of support plate, crystallization furnace body, furnace cover plate, gas outlet pipeline, heating resistance wire, temperature sensor, material rack, placing groove, pressure regulating valve, filter screen, air inlet pipe and flow regulating valve, the unique spiral heating resistance wire layout of the device combines temperature sensor, can significantly improve the uniformity of temperature distribution in crystallization furnace body, realize real-time accurate monitoring to temperature, to effectively guarantee the consistency of molybdenum disilicide crystal growth, greatly improve the performance stability of electric heating element.

Description

Technical Field

[0001] This utility model relates to the technical field of molybdenum disilicide heating element production equipment, specifically a crystallization device for sintering molybdenum disilicide heating elements. Background Technology

[0002] Molybdenum disilicide heating elements possess advantages such as excellent high-temperature oxidation resistance, low temperature coefficient of resistance, and uniform heating, leading to their widespread application in high-temperature industrial furnaces and other fields. Sintering and crystallization are crucial steps in the production of molybdenum disilicide heating elements, as their crystallization effect directly impacts the performance and quality of the heating element.

[0003] Existing crystallization apparatuses for sintering molybdenum disilicide heating elements have some shortcomings. For example, uneven temperature distribution during crystallization can easily lead to inconsistent growth of molybdenum disilicide crystals, affecting the performance stability of the heating element. Furthermore, existing apparatuses do not provide precise atmosphere control during crystallization, which may introduce impurities and affect the crystallization quality.

[0004] Therefore, it is necessary to provide a crystallization apparatus for sintering molybdenum disilicide heating elements to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a crystallization apparatus for sintering molybdenum disilicide heating elements, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A crystallization apparatus for sintering molybdenum disilicide heating elements, comprising:

[0008] A support plate is provided, with a support frame fixedly installed at the bottom of the support plate. A crystallization furnace body is fixedly installed on one side of the top of the support plate. A furnace cover plate is provided at one end of the crystallization furnace body. A material placement rack is fixedly installed on the inner surface of the furnace cover plate. Several placement slots are provided on the top of the material placement rack. A heating resistance wire is provided on the inner wall of the crystallization furnace body. A temperature sensor is provided inside the crystallization furnace body.

[0009] An air inlet pipe is fixedly installed at the lower end of the other end of the crystallization furnace body. A flow regulating valve is provided on the air inlet pipe, and a filter screen is fixedly installed at one end of the air inlet pipe.

[0010] The heating resistance wires are distributed in a spiral shape, and a sealing gasket is provided on the side of the inner surface of the furnace cover plate.

[0011] Preferably, the other side of the top of the support plate is provided with symmetrically distributed slide rails, and threaded rods are rotatably installed inside the two slide rails. Adjusting blocks are sleeved on the outer walls of the two threaded rods and are slidably installed on the slide rails. A connecting frame is fixedly installed between the tops of the two adjusting blocks and is fixedly connected to the outer surface of the furnace cover plate. A driving mechanism is provided on one side of the support plate.

[0012] Preferably, the driving mechanism includes two fixed blocks, which are symmetrically distributed and fixedly installed on one side of the support plate. A worm gear is rotatably installed between the two fixed blocks. One end of each of the two threaded rods passes through the support plate and extends to one side of the support plate. A worm wheel is fixedly installed on the outer wall of one end of each of the two threaded rods, and the worm wheel meshes with the worm gear. A servo motor is fixedly installed on the back of one of the fixed blocks, and the driving end of the servo motor passes through the fixed block and is fixedly connected to the rear end of the worm gear.

[0013] Preferably, an exhaust pipe is fixedly installed above the other end of the crystallization furnace body, and a pressure regulating valve is provided on the exhaust pipe.

[0014] Preferably, the furnace cover plate is provided with a viewing window, and the viewing window is made of a high-temperature transparent material. A reinforcing rib is fixedly installed between the bottom of the material placement rack and the inner surface of the furnace cover plate.

[0015] Preferably, the adjusting block has a threaded hole that matches the threaded rod, and the adjusting block is threadedly connected to the threaded rod through the threaded hole.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model utilizes a combination of a support plate, crystallization furnace body, furnace cover plate, gas outlet pipe, heating resistance wire, temperature sensor, material placement rack, placement trough, pressure regulating valve, filter screen, gas inlet pipe, and flow regulating valve. The unique spiral heating resistance wire layout combined with the temperature sensor significantly improves the uniformity of temperature distribution within the crystallization furnace, enabling real-time and accurate temperature monitoring. This effectively ensures the consistency of molybdenum disilicide crystal growth and greatly enhances the performance stability of the heating element. Furthermore, the flow regulating valve, filter screen, and pressure regulating valve work together to precisely control the atmosphere and pressure during the crystallization process, effectively ensuring the purity of the introduced gas and preventing the introduction of impurities, thereby significantly improving the crystallization quality of the molybdenum disilicide heating element.

[0018] 2. This utility model utilizes a connecting frame, adjusting block, servo motor, fixing block, worm gear, worm, slide rail, and threaded rod in combination, driven by the servo motor, to achieve the automatic opening and closing function of the furnace cover plate relative to the opening of the crystallization furnace body. This mechanically driven method allows for convenient movement of the material placement rack from or into the crystallization furnace body, facilitating the placement and removal of molybdenum disilicide heating element blanks, and effectively improving the convenience and efficiency of production operations. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a bottom view of the structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the heating resistance wire in this utility model;

[0022] Figure 4 This is a partial cross-sectional view of the present invention.

[0023] In the diagram: 1. Support plate; 2. Support frame; 3. Crystallization furnace body; 4. Furnace cover plate; 5. Gas outlet pipe; 6. Heating resistance wire; 7. Temperature sensor; 8. Material placement rack; 9. Placement slot; 10. Visual observation window; 11. Connecting frame; 12. Adjusting block; 13. Servo motor; 14. Fixing block; 15. Pressure regulating valve; 16. Worm gear; 17. Worm; 18. Slide rail; 19. Threaded rod; 20. Filter screen; 21. Gas inlet pipe; 22. Flow regulating valve. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-4 One embodiment provided by this utility model:

[0029] A crystallization apparatus for sintering molybdenum disilicide heating elements, comprising:

[0030] Support plate 1, support frame 2 is fixedly installed at the bottom of support plate 1, crystallization furnace body 3 is fixedly installed on one side of the top of support plate 1, furnace cover plate 4 is provided at one end of crystallization furnace body 3, material placement rack 8 is fixedly installed on the inner surface of furnace cover plate 4, several placement slots 9 are provided on the top of material placement rack 8, heating resistance wire 6 is provided on the inner wall of crystallization furnace body 3, and temperature sensor 7 is provided inside crystallization furnace body 3.

[0031] An air inlet pipe 21 is fixedly installed at the bottom of the other end of the crystallization furnace body 3. A flow regulating valve 22 is installed on the air inlet pipe 21. A filter screen 20 is fixedly installed at one end of the air inlet pipe 21. Specific gases, such as inert gases, can be introduced into the crystallization furnace body 3 through the air inlet pipe 21 to control the atmosphere during the crystallization process.

[0032] The heating resistance wire 6 is spirally distributed, which can increase the heating area and make the heat distribution in the crystallization furnace body 3 more uniform, thereby improving the heating effect and efficiency. The inner surface of the furnace cover plate 4 is equipped with sealing gaskets, which can enhance the sealing of the furnace body, reduce heat loss, and ensure the stability of the furnace temperature.

[0033] On the other side of the top of the support plate 1, there are symmetrically distributed slides 18. Threaded rods 19 are rotatably installed inside the two slides 18. Adjusting blocks 12 are fitted on the outer walls of the two threaded rods 19 and are slidably installed on the slides 18. A connecting frame 11 is fixedly installed between the tops of the two adjusting blocks 12 and is fixedly connected to the outer surface of the furnace cover plate 4. A drive mechanism is provided on one side of the support plate 1.

[0034] In one embodiment, the drive mechanism includes two fixed blocks 14, which are symmetrically distributed and fixedly installed on one side of the support plate 1. A worm gear 17 is rotatably installed between the two fixed blocks 14. One end of each of the two threaded rods 19 passes through the support plate 1 and extends to one side of the support plate 1. A worm wheel 16 is fixedly installed on the outer wall of one end of each of the two threaded rods 19, and the worm wheel 16 meshes with the worm gear 17. A servo motor 13 is fixedly installed on the back of one fixed block 14, and the drive end of the servo motor 13 passes through the fixed block 14 and is fixedly connected to the rear end of the worm gear 17.

[0035] In one preferred embodiment, an exhaust pipe 5 is fixedly installed above the other end of the crystallization furnace body 3. A pressure regulating valve 15 is provided on the exhaust pipe 5 to discharge excess gas in the furnace. The pressure in the furnace can be flexibly and accurately adjusted by the pressure regulating valve 15 to stabilize it within a suitable range, thereby ensuring the stability and reliability of the sintering and crystallization process of molybdenum disilicide heating elements.

[0036] In one embodiment, a viewing window 10 is provided on the furnace cover plate 4, and the viewing window 10 is made of an inner high-temperature transparent material to facilitate real-time observation of the internal sintering situation. A reinforcing rib is fixedly installed between the bottom of the material placement rack 8 and the inner surface of the furnace cover plate 4 to enhance structural stability and ensure operational safety.

[0037] In one preferred embodiment, the adjusting block 12 has a threaded hole that matches the threaded rod 19, and the adjusting block 12 is threadedly connected to the threaded rod 19 through the threaded hole, which can convert the rotational motion of the threaded rod 19 into the linear motion of the adjusting block 12, thereby achieving precise position adjustment and ensuring stable and reliable operation of the device.

[0038] The working principle of this utility model is as follows: All electrical components mentioned are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer for control, and existing publicly available power connection technologies are not elaborated here. Parts not mentioned in this device are the same as or can be implemented using existing technologies. In actual operation, the furnace cover 4 is opened, and the molybdenum disilicide heating element blank is precisely placed in the placement slot 9 of the material placement rack 8. The furnace cover 4 is then closed to ensure the device's airtightness. The heating resistance wires 6, spirally distributed on the inner wall of the crystallization furnace body 3, are activated by the main controller to begin heating the interior of the crystallization furnace body 3. The heating power and time of the heating resistance wires 6 can be precisely controlled by the main controller. Simultaneously, a specific gas is introduced into the crystallization furnace body 3 through the gas inlet pipe 21. The flow regulating valve 22 on the gas inlet pipe 21 precisely regulates the gas flow rate, and impurities in the gas are filtered out by the gas filter screen 20 to ensure high purity of the introduced gas. The pressure regulating valve 15 installed on the gas outlet pipe 5 is used to precisely regulate the pressure inside the crystallization furnace 3, keeping it within a suitable process range. The temperature sensor 7 monitors the furnace temperature in real time and feeds the temperature data back to the relevant display or control system. Based on the monitored temperature, the heating power of the heating resistance wire 6 and the gas flow rate are adjusted in a timely manner until the molybdenum disilicide heating element completes the entire sintering and crystallization process.

[0039] When placing or removing the molybdenum disilicide heating element blank, the servo motor 13 can be started and controlled to operate. The drive end of the servo motor 13 drives the worm gear 17 to rotate. Since the worm gear 17 and the worm wheel 16 mesh with each other, the two worm wheels 16 will rotate synchronously under the drive of the worm gear 17. The rotation of the worm wheel 16 then drives the threaded rod 19 connected to it to rotate synchronously. At this time, using the threaded transmission principle between the threaded rod 19 and the adjusting block 12, and the sliding fit between the adjusting block 12 and the slide rail 18, the two adjusting blocks 12 can move laterally synchronously. The movement of the adjusting block 12 is transmitted to the furnace cover plate 4 through the connecting frame 11, which drives the furnace cover plate 4 to move. The movement of the furnace cover plate 4 will then drive the material placement rack 8 to move together. In this way, with the help of the servo motor 13, the automatic opening and closing function of the furnace cover plate 4 relative to the opening of the crystallization furnace body 3 is realized. This mechanically driven method allows for easy removal of the material placement rack 8 from or into the crystallization furnace body 3, facilitating the placement and removal of molybdenum disilicide heating element blanks and effectively improving the convenience and efficiency of production operations.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A crystallization apparatus for sintering molybdenum disilicide heating elements, characterized in that, It includes: A support plate (1) is provided, and a support frame (2) is fixedly installed at the bottom of the support plate (1). A crystallization furnace body (3) is fixedly installed on one side of the top of the support plate (1). A furnace cover plate (4) is provided at one end of the crystallization furnace body (3). A material placement rack (8) is fixedly installed on the inner surface of the furnace cover plate (4). Several placement slots (9) are provided on the top of the material placement rack (8). A heating resistance wire (6) is provided on the inner wall of the crystallization furnace body (3). A temperature sensor (7) is provided inside the crystallization furnace body (3). An air inlet pipe (21) is fixedly installed at the bottom of the other end of the crystallization furnace body (3). A flow regulating valve (22) is provided on the air inlet pipe (21). A filter screen (20) is fixedly installed at one end of the air inlet pipe (21). The heating resistance wire (6) is spirally distributed, and a sealing gasket is provided on the side of the inner surface of the furnace cover plate (4).

2. The crystallization apparatus for sintering molybdenum disilicide heating elements according to claim 1, characterized in that: The support plate (1) has symmetrically distributed slides (18) on the other side of its top. Threaded rods (19) are rotatably installed inside the two slides (18). Adjusting blocks (12) are fitted on the outer walls of the two threaded rods (19) and are slidably installed on the slides (18). A connecting frame (11) is fixedly installed between the tops of the two adjusting blocks (12) and is fixedly connected to the outer surface of the furnace cover plate (4). A driving mechanism is provided on one side of the support plate (1).

3. The crystallization apparatus for sintering molybdenum disilicide heating elements according to claim 2, characterized in that: The drive mechanism includes two fixed blocks (14), which are symmetrically distributed and fixedly installed on one side of the support plate (1). A worm gear (17) is rotatably installed between the two fixed blocks (14). One end of each of the two threaded rods (19) passes through the support plate (1) and extends to one side of the support plate (1). A worm wheel (16) is fixedly installed on the outer wall of one end of each of the two threaded rods (19), and the worm wheel (16) meshes with the worm gear (17). A servo motor (13) is fixedly installed on the back of one of the fixed blocks (14), and the drive end of the servo motor (13) passes through the fixed block (14) and is fixedly connected to the rear end of the worm gear (17).

4. The crystallization apparatus for sintering molybdenum disilicide heating elements according to claim 1, characterized in that: An exhaust pipe (5) is fixedly installed above the other end of the crystallization furnace body (3), and a pressure regulating valve (15) is provided on the exhaust pipe (5).

5. The crystallization apparatus for sintering molybdenum disilicide heating elements according to claim 1, characterized in that: The furnace cover plate (4) is provided with a viewing window (10), and the viewing window (10) is made of high-temperature transparent material. The bottom of the material placement rack (8) is fixedly installed with a reinforcing rib between it and the inner surface of the furnace cover plate (4).

6. The crystallization apparatus for sintering molybdenum disilicide heating elements according to claim 2, characterized in that: The adjusting block (12) has a threaded hole that matches the threaded rod (19), and the adjusting block (12) is threadedly connected to the threaded rod (19) through the threaded hole.

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