High-temperature smelting furnace for silicon carbide production

Abstract

The utility model relates to the technical field of silicon carbide production, in particular to a high-temperature smelting furnace for silicon carbide production, which comprises a treatment box, a bottom frame is fixedly mounted at the bottom of the treatment box, a base plate is fixedly mounted at the bottom end of the bottom frame, and a crushing mechanism is arranged above the inside of the treatment box. According to the high-temperature smelting furnace for silicon carbide production, the distance between the crushing rollers is accurately adjusted through the hydraulic telescopic rods, dynamic and accurate control over the discharging granularity is achieved, and the process flexibility is remarkably improved. The optimal crushing strength can be matched according to the target particle size, repeated crushing is avoided, the single-pass efficiency is improved, the roller distance can be rapidly increased during material blocking so as to remove faults, and the continuous operation stability is guaranteed. And meanwhile, the over-crushing phenomenon is effectively inhibited by the adjustable roller gap, so that the uniformity of particle size distribution of the product is improved, and the overall crushing efficiency and reliability are comprehensively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of silicon carbide production, specifically to high temperature smelting furnace for silicon carbide production. BACKGROUND

[0002] Silicon carbide as the third generation wide band gap semiconductor material, in high temperature, high frequency, high power and radiation resistance electronic device field has irreplaceable advantage, also is high performance ceramic, abrasive and composite material's key raw material. Its industrialization production mainly relies on high temperature smelting technology.

[0003] The utility model discloses a high temperature smelting furnace for silicon carbide production, which comprises a treatment box, the treatment box further comprises a support, the support is fixed to the bottom end side wall of the treatment box, and the bottom end side wall of the support is fixed with a bottom plate.

[0004] For the related technology in the above, the device has some deficiencies, in the actual use process, the fixed roll gap is adopted to the roll type crushing of crushing process, the crushing strength cannot be dynamically adjusted according to the target particle size, leading to the insufficient product particle size control ability. When finer particle size is needed, only repeated crushing can be relied on, which is low in efficiency and easy to produce over crushing phenomenon, affecting the uniformity of the particle size distribution of the final product, therefore, it is necessary to provide high temperature smelting furnace for silicon carbide production to solve the above technical problems. Utility model content

[0005] In view of the deficiencies of the prior art, the utility model provides high temperature smelting furnace for silicon carbide production, and solves the problems in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] High temperature smelting furnace for silicon carbide production, it includes:

[0008] The bottom of the treatment box is fixedly installed with a bottom frame, the bottom end of the bottom frame is fixedly installed with a base plate, the upper part in the treatment box is provided with a crushing mechanism, and the lower part in the treatment box is provided with a screening mechanism below the crushing mechanism.

[0009] The crushing mechanism comprises crushing frames symmetrically arranged above the inside of the processing box, crushing rollers rotatably arranged on the two crushing frames, second servo motors fixedly arranged on one side of the two crushing frames, driving ends of the second servo motors penetrating the crushing frames and extending into the crushing frames to be fixedly connected with one end of the crushing rollers, and a through slot formed in one side of the processing box, wherein the second servo motors penetrate the inside of the through slot.

[0010] The adjusting assembly comprises hydraulic telescopic rods fixedly arranged on the front and back of the processing box in a symmetrical manner, and driving ends of the hydraulic telescopic rods penetrating the processing box and extending into the processing box to be fixedly connected with the crushing frames at the corresponding positions.

[0011] As a preferred technical solution of the present application, the screening mechanism comprises a screen frame arranged below the crushing rollers in the inside of the processing box, guide rods symmetrically arranged and slidingly inserted into the front and back of the processing box, a pressing plate fixedly arranged at one end of a group of the guide rods, springs sleeved on the outer walls of a group of the guide rods, an installation plate fixedly arranged below the pressing plate on the front of the processing box, a power assembly arranged on the top of the installation plate, the screen frame fixedly arranged between the opposite ends of the two groups of guide rods, and a maintenance door plate arranged on the back of the processing box and corresponding to the position of the screen frame.

[0012] As a preferred technical solution of the present application, a support frame is fixedly arranged on one side of the processing box on the top of the base plate, and a conveying belt is arranged between the support frame and the base plate, and a plurality of material conveying hoppers are equidistantly and uniformly arranged on the outer surface of the conveying belt.

[0013] As a preferred technical solution of the present application, the power assembly comprises a first servo motor fixedly arranged on the top of the installation plate, a cam plate fixedly arranged on the driving end of the first servo motor, and the cam plate abutting against the outer surface of the pressing plate.

[0014] As a preferred technical solution of the present application, a stabilizing frame is fixedly arranged on the top of the installation plate, and the stabilizing frame is rotatably connected with the driving end of the first servo motor through the bearing arranged thereon.

[0015] As a preferred technical solution of the present application, a material guiding table is fixedly arranged above the crushing mechanism at the feeding port on the top of the processing box.

[0016] As a preferred technical solution of the present application, a motor protection cover is fixedly arranged on one side of the crushing frame, the second servo motor is arranged in the inside of the motor protection cover, a second protection cover corresponding to the position of the through slot is fixedly arranged on one side of the processing box, and an exhaust fan is arranged on one side of the second protection cover.

[0017] As a preferred technical scheme of the present application, the front surface of the processing box is provided with a first protective cover, and the power assembly is located inside the first protective cover.

[0018] As a preferred technical scheme of the present application, the outer surface of the crushing frame is fixedly provided with symmetrically distributed stabilizing rods, and the processing box is fixedly and penetratingly installed with a sliding sleeve on the outer surface thereof and is in sliding connection with the stabilizing rods.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] 1. The present application realizes dynamic and accurate control of the discharging particle size by accurately adjusting the distance between the crushing rollers through the hydraulic telescopic rod, significantly improves the process flexibility, avoids repeated crushing, improves the single-pass efficiency, quickly increases the roller distance to eliminate the fault when the material is blocked, and guarantees the stability of continuous operation.

[0021] 2. The present application realizes the vibration effect of the screen frame, fully fluidizes, loosens and tumbles the silicon carbide material in the screen frame, significantly improves the screening efficiency of fine particles, effectively avoids the particle jamming phenomenon near the screen hole, and has far better screening efficiency and reliability than the static screening mode relying on the mechanical scraping of the scraper. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 FIG. 1 is a perspective view of the present application;

[0023] Figure 2 FIG. 2 is a sectional view of the present application;

[0024] Figure 3 FIG. 3 is a rear view of the present application;

[0025] Figure 4 FIG. 4 is a structural schematic view of the screening mechanism in the present application;

[0026] Figure 5 FIG. 5 is a structural schematic view of the crushing mechanism in the present application;

[0027] Figure 6The utility model discloses a structure diagram of conveying belt.

[0028] In the drawing: 1, processing box, 2, material guiding table, 3, crushing mechanism, 4, screening mechanism, 5, stabilizing rod, 6, hydraulic telescopic rod, 7, material conveying hopper, 8, conveying belt, 9, support frame, 10, base plate, 11, first protective cover, 12, crushing roller, 13, underframe, 14, crushing frame, 15, exhaust fan, 16, second protective cover, 17, motor protective cover, 18, maintenance door plate, 19, guide rod, 20, pressing plate, 21, cam plate, 22, stabilizing frame, 23, first servo motor, 24, mounting plate, 25, spring, 26, through slot, 27, second servo motor, 28, screen frame. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] Embodiment 1

[0031] Please refer to Figures 1-6 The embodiments provided by the utility model:

[0032] The high-temperature smelting furnace for silicon carbide production comprises:

[0033] The processing box 1 is fixedly installed at the bottom and is provided with the underframe 13 at the bottom end, and the base plate 10 is fixedly installed at the bottom end of the underframe 13. The crushing mechanism 3 is arranged at the upper portion in the processing box 1. The screening mechanism 4 is arranged below the crushing mechanism 3 in the processing box 1.

[0034] The crushing mechanism 3 comprises the crushing frames 14 symmetrically arranged at the upper portion in the processing box 1. The crushing rollers 12 are rotatably installed on the two crushing frames 14. The second servo motors 27 are fixedly installed on one side of the two crushing frames 14. The driving end of the second servo motor 27 penetrates the crushing frame 14 and extends into the crushing frame 14 to be fixedly connected with one end of the crushing roller 12. The through slot 26 is formed in one side of the processing box 1. The second servo motor 27 penetrates the inside of the through slot 26. The adjusting assemblies are arranged at the upper portion of the front face and the back face of the processing box 1.

[0035] The adjusting assembly comprises the hydraulic telescopic rods 6 fixedly installed on the front face and the back face of the processing box 1 in a symmetrical manner. The driving end of the hydraulic telescopic rod 6 penetrates the processing box 1 and extends into the processing box 1 to be fixedly connected with the corresponding crushing frame 14.

[0036] Further, the top of the substrate 10 is fixedly installed with a support frame 9 on one side of the processing box 1, and a conveying belt 8 is arranged between the support frame 9 and the bottom frame 13, and a plurality of material conveying hoppers 7 are uniformly and equidistantly installed on the outer surface of the conveying belt 8.

[0037] Further, the feeding port at the top of the processing box 1 is fixedly installed with a material guide table 2 above the crushing mechanism 3. The material guide table 2 can effectively guide the falling silicon carbide material to accurately and centrally fall into the meshing area between the two crushing rollers 12, thereby improving the uniformity and controllability of the feeding, optimizing the initial meshing condition, improving the crushing efficiency and reducing the material splashing.

[0038] Further, a motor protection cover 17 is fixedly installed on one side of the crushing frame 14, and the second servo motor 27 is located in the motor protection cover 17, and a second protection cover 16 corresponding to the position of the through groove 26 is fixedly installed on one side of the processing box 1, and an exhaust fan 15 is arranged on one side of the second protection cover 16. The motor protection cover 17 and the second protection cover 16 jointly constitute the protection of the second servo motor 27, effectively isolating the invasion of dust and debris in the crushing area; combined with the forced ventilation formed by the exhaust fan 15, the heat dissipation condition of the second servo motor 27 is significantly improved, ensuring the operation reliability and service life of the second servo motor 27 under heavy load working condition

[0039] Further, symmetrical stabilizing rods 5 are fixedly installed on the outer surface of the crushing frame 14, and the processing box 1 is fixedly and penetratingly installed with a sliding sleeve on the outer surface and is in sliding connection with the stabilizing rods 5. The longitudinal movement of the crushing frame 14 is provided with accurate linear guidance and radial constraint, and the stability and positioning accuracy of the distance adjustment between the crushing rollers 12 are significantly improved.

[0040] Embodiment 2

[0041] Reference Figures 1-6 For the second embodiment of the utility model, the embodiment is based on the previous embodiment, specifically, the screening mechanism 4 includes a sieve frame 28 arranged inside the processing box 1 below the crushing roller 12, and symmetrical guide rods 19 are slidingly inserted into the front and back of the processing box 1, one end of a group of guide rods 19 is fixedly installed with a pressing plate 20, a spring 25 is sleeved on the outer wall of a group of guide rods 19, and an installation plate 24 is fixedly installed below the pressing plate 20 on the front of the processing box 1, a power assembly is arranged on the top of the installation plate 24, the sieve frame 28 is fixedly installed between the opposite ends of the two groups of guide rods 19, and a maintenance door plate 18 corresponding to the position of the sieve frame 28 is arranged on the back of the processing box 1. The maintenance door plate 18 provides a direct and convenient cleaning channel for the sieve frame 28, and facilitates the cleaning of the screened silicon carbide.

[0042] Further, the power assembly comprises a first servo motor 23 fixedly installed on the top of the mounting plate 24, and the driving end of the first servo motor 23 is fixedly installed with a cam plate 21, and the cam plate 21 is in abutment with the outer surface of the pressing plate 20. Therefore, the first servo motor 23 can directly convert the rotary motion into the periodic linear force acting on the pressing plate 20 through the cam plate 21, the transmission path is simple and efficient, and the accuracy, reliability and instant response of the vibrating screening action are ensured.

[0043] Further, the top of the mounting plate 24 is fixedly installed with a stabilizer 22, and the stabilizer 22 is rotationally connected with the driving end of the first servo motor 23 through the bearing installed thereon. The radial and axial displacement of the driving shaft can be effectively constrained, and the vibration and deflection of the first servo motor 23 during operation are significantly reduced, so that the accuracy and stability of the rotary motion of the cam plate 21 are ensured.

[0044] Further, the front of the treatment box 1 is installed with a first protective cover 11, and the power assembly is located in the interior of the first protective cover 11. The first protective cover 11 provides effective physical isolation for the interior power assembly, plays the roles of dust prevention, foreign matter prevention and operation noise reduction, and improves the safety of equipment operation.

[0045] It should be noted that the controller control circuit can be realized through simple programming of those skilled in the art, and belongs to the common knowledge in the art. The control mode and circuit connection are not described in detail because they are not transformed.

[0046] The working principle of the utility model is as follows: when the device is used for high-temperature smelting pretreatment of silicon carbide, first, the raw materials are put into the treatment box 1. According to the target particle size requirement, the hydraulic telescopic rod 6 on the crushing mechanism 3 is started, the driving end drives the crushing frame 14 and the crushing roller 12 installed thereon to displace longitudinally, so that the working distance between the two crushing rollers 12 is accurately adjusted. After the distance is set, the second servo motor 27 is started to drive the two crushing rollers 12 to rotate relatively. The silicon carbide falls between the two rollers under the guidance of the material guide table 2 and is crushed through the extrusion and shearing action between the rollers. The adjustable roller gap design significantly improves the process flexibility: on the one hand, when the material is stuck, the roller gap can be quickly increased through the hydraulic telescopic rod 6 to eliminate the fault and ensure the stability of continuous operation; on the other hand, the optimal crushing strength can be dynamically matched according to the product particle size requirement, and the particle size of the discharged material can be accurately controlled. This not only avoids repeated crushing to obtain finer particle size, improves the single-pass efficiency, but also effectively suppresses the over-crushing phenomenon, thereby improving the uniformity of the final product particle size distribution.

[0047] The crushed silicon carbide material directly falls into the screen frame 28 of the screening mechanism 4 for particle size classification. In this process, the first servo motor 23 is started, and the cam plate 21 at the output shaft end is rotated. The cam plate 21 periodically acts on the pressing plate 20, combined with the reset elastic force provided by the spring 25, to form a set of efficient vibration generating mechanism. The mechanism makes the pressing plate 20 produce regular longitudinal vibration, and through the connection with the guide rod 19, the vibration energy is directly transmitted to the entire screen frame 28. Under the action of this high-frequency and small-amplitude vibration, the silicon carbide material inside the screen frame 28 is fully fluidized, loosened and rolled, which significantly improves the screening efficiency of fine particles and effectively avoids the particle jamming phenomenon near the screen hole. The screening efficiency and reliability are far superior to the static screening method relying on mechanical scraping of the scraper.

[0048] The above is only the preferred embodiment of the present utility, it should be pointed out that for those skilled in the art, without departing from the principle of the present utility, can make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present utility. The structures, devices and operation methods not specifically described and explained in the present utility are implemented according to the conventional means in the art, unless otherwise specified and limited.

Claims

1. A high-temperature smelting furnace for producing silicon carbide, characterized by comprising: It includes: The processing box (1), the bottom of the processing box (1) is fixedly installed with a chassis (13), the bottom end of the chassis (13) is fixedly installed with a base plate (10), the upper part of the inside of the processing box (1) is provided with a crushing mechanism (3), and the inside of the processing box (1) below the crushing mechanism (3) is provided with a screening mechanism (4); The crushing mechanism (3) includes crushing frames (14) symmetrically arranged on the upper part of the inside of the processing box (1), a crushing roller (12) is rotatably installed on each of the two crushing frames (14), a second servo motor (27) is fixedly installed on one side of each of the two crushing frames (14), the driving end of the second servo motor (27) penetrates the crushing frame (14) and extends into the inside of the crushing frame (14) and is fixedly connected with one end of the crushing roller (12), a through slot (26) is formed in one side of the processing box (1), the second servo motor (27) penetrates the inside of the through slot (26), and the front and back surfaces of the processing box (1) are both provided with adjusting assemblies; The adjusting assembly includes hydraulic telescopic rods (6) fixedly installed on the front and back surfaces of the processing box (1) and symmetrically arranged, and the driving end of the hydraulic telescopic rod (6) penetrates the processing box (1) and extends into the inside of the processing box (1) and is fixedly connected with the corresponding crushing frame (14).

2. The high-temperature melting furnace for producing silicon carbide according to claim 1, characterized by: The screening mechanism (4) includes a screen frame (28) arranged on the inside of the processing box (1) below the crushing roller (12), the front and back surfaces of the processing box (1) are both slidably connected with guide rods (19) symmetrically arranged, one end of each of the guide rods (19) is fixedly installed with a pressing plate (20), a spring (25) is sleeved on the outer wall of each of the guide rods (19), the front surface of the processing box (1) below the pressing plate (20) is fixedly installed with a mounting plate (24), the top of the mounting plate (24) is provided with a power assembly, the screen frame (28) is fixedly installed between the opposite ends of the two groups of guide rods (19), and the back surface of the processing box (1) is provided with a maintenance door plate (18) corresponding to the position of the screen frame (28).

3. The high-temperature melting furnace for producing silicon carbide according to claim 1, characterized by: The top of the base plate (10) on one side of the processing box (1) is fixedly installed with a support frame (9), the support frame (9) and the chassis (13) are provided with a conveying belt (8), and a plurality of material conveying hoppers (7) are equidistantly and uniformly installed on the outer surface of the conveying belt (8).

4. The high-temperature melting furnace for producing silicon carbide according to claim 2, characterized by: The power assembly includes a first servo motor (23) fixedly installed on the top of the mounting plate (24), the driving end of the first servo motor (23) is fixedly installed with a cam plate (21), and the cam plate (21) abuts against the outer surface of the pressing plate (20).

5. The high-temperature melting furnace for producing silicon carbide according to claim 4, characterized by: The top of the mounting plate (24) is fixedly installed with a stabilizing frame (22), and the stabilizing frame (22) is rotatably connected with the driving end of the first servo motor (23) through the bearing installed thereon.

6. The high-temperature melting furnace for producing silicon carbide according to claim 1, characterized by: The top of the processing box (1) is fixedly installed with a material guiding table (2) above the crushing mechanism (3) at the feeding port.

7. The high-temperature melting furnace for producing silicon carbide according to claim 1, characterized by: One side of the crushing frame (14) is fixedly provided with a motor protection cover (17), the second servo motor (27) is located in the motor protection cover (17), one side of the processing box (1) is fixedly provided with a second protection cover (16) corresponding to the position of the through slot (26), one side of the second protection cover (16) is provided with an exhaust fan (15).

8. The high-temperature melting furnace for producing silicon carbide according to claim 4, characterized by: The front of the processing box (1) is provided with a first protection cover (11), and the power assembly is located in the first protection cover (11).

9. The high-temperature melting furnace for producing silicon carbide according to claim 1, characterized by: The outer surface of the crushing frame (14) is fixedly provided with symmetrically distributed stabilizing rods (5), and the processing box (1) is fixedly inserted and installed on the outer surface and is in sliding connection with the stabilizing rods (5).

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