Silicon carbide product raw material mixing device

Abstract

The invention provides a silicon carbide product raw material mixing device and relates to the technical field of silicon carbide. The silicon carbide product raw material mixing device comprises three groups of feeding barrels, three groups of material pumps, a group of distribution boxes and a group of discharging barrels. Slurry and sticky materials are sprayed out through the first spraying opening, the second spraying opening and the third spraying opening in the spraying head and then are converged, full fusion of the sprayed materials can be achieved, the multiple sets of branch stirring rods driven by the first motor to rotate are arranged in the feeding barrel, the slurry and the sticky materials are continuously stirred, and the stirring effect is good. The slurry is continuously stirred, so that the mixing uniformity between various powders and solvents can be improved, an electric heating piece is arranged in a coating layer of the main rod, sticky materials can be heated, the temperature is increased so as to reduce the viscosity of the sticky materials, the slurry and the sticky materials can be continuously fed through corresponding feeding pipes, and therefore the production efficiency is improved. The sprayed and mixed materials can be continuously discharged after being driven by a second motor to rotate through a second auger blade, so that the production efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of silicon carbide, in particular to a raw material mixing device for silicon carbide products. Background Art

[0002] Silicon carbide, commonly known as corundum, is a ceramic compound formed by the bonding of silicon and carbon. Silicon carbide exists in nature in the form of a rare mineral called moissanite. Synthetic silicon carbide powder has gradually begun to be mass-produced and used as an abrasive. It is widely used for its excellent high temperature resistance, wear resistance, erosion resistance, corrosion resistance and light weight. Products made of silicon carbide include silicon carbide sealing rings, silicon carbide bushings, bulletproof plates and other special-shaped parts. It is also used in the manufacture of electronic devices such as light-emitting diodes and early radio detectors.

[0003] At present, in the production process of silicon carbide sleeves, the silicon carbide raw materials need to be fully mixed first, and then the mixed raw materials are pressed into shape, and then the formed silicon carbide sleeve blanks are transported to a calcining furnace. After calcination, the silicon carbide sleeve finished products are obtained. In the prior art, when the silicon carbide raw materials are mixed, due to the particularity of the raw materials used, some of the raw materials are relatively viscous and some are powdery. When fusion is performed, it is very easy to cause uneven fusion of the viscous raw materials and the powdery raw materials, which leads to insufficient mixing of the raw materials, uneven raw material ratio, and thus affects the quality of the later products.

[0004] To solve the above problems, Chinese Patent Publication No. CN113144954B disclosed on July 21, 2023 a device for fully mixing the raw materials of high-temperature resistant silicon carbide products using atmospheric pressure. The patent includes a bottom plate assembly and a feeding unit, etc. The bottom plate assembly is connected to the feeding unit. The patent claims that it realizes the stacking of epoxy resin by reciprocating movement for unloading. Then, while unloading the layers, the powdered silicon dioxide and sawdust, as well as petroleum coke powder, are integrated into the stacked layers of epoxy resin by atmospheric pressure to make them fully mixed. Then, the raw materials are fully stirred to ensure the uniform ratio of the raw materials, thereby ensuring the quality of the later products. However, through studying the technical solution of the above-mentioned patent disclosure, it is found that it has obvious disadvantages, the specific disadvantages are as follows: it pours the viscous resin, one of the raw materials, into the mixing box through the material box pouring method, and then the material box is reciprocated to form a stacked state at the bottom of the mixing box. In this process, the stacking thickness is uncontrollable due to the influence of the pouring speed of the material box, the reciprocating speed of the material box, the viscosity of the resin, etc. In addition, during the stacking process, the stopper is pushed by the connecting rod, and the air pressure is formed when the stopper moves in the material barrel, so that the powdered material in the material barrel is sent into the mixing box through the conduit. The principle is similar to that of loading powder into a syringe and pushing the piston to spray out the powder. This method cannot guarantee the amount of powder sprayed each time. In the initial state, there is more powder in the material barrel and more is sprayed out. Subsequently, less and less powder is sprayed out, resulting in less powder material on the wall at the bottom of the mixing box and less powder material on the upper layer of the mixing box. A longer stirring time is still required to achieve uniform stirring, and the raw materials in the material box and the material barrel cannot be added online. The above disadvantages lead to low production efficiency and uneven material mixing of the device. In view of the above situation, it is necessary to further optimize and improve the raw material mixing device for silicon carbide products. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a raw material mixing device for silicon carbide products, which solves the problems of low production efficiency and uneven material mixing in the prior art raw material mixing device for silicon carbide products.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a silicon carbide product raw material mixing device, including three groups of feed barrels, three groups of material pumps, a group of distribution boxes and a group of discharge barrels, the three groups of feed barrels are all provided with a first stirring structure inside, the three groups of feed barrels are all fixedly connected with feed pipes on the rear walls and near the upper walls, the three groups of feed barrels are all provided with discharge pipes at the lower ends, the inlet ends of the three groups of material pumps are respectively fixedly connected to the ends of the three groups of discharge pipes away from the feed barrels, the outlet ends of the three groups of material pumps are all fixedly connected to the front wall of the distribution box, the rear wall of the distribution box is fixedly connected to the discharge barrel through a fourth connecting pipe, and the fourth connecting pipe is connected to the distribution box. One end of the box passes through the rear wall of the distribution box and extends into the interior of the distribution box, the upper end of the discharge barrel is fixedly connected with an upper cover, the end of the fourth connecting pipe away from the distribution box passes through the front wall of the upper cover and extends into the interior of the upper cover, the distribution box is fixedly connected to the discharge barrel through the fourth connecting pipe and the upper cover, an insulation layer is pasted on the inner wall of the distribution box, the end of the fourth connecting pipe extending into the interior of the upper cover is fixedly connected with an elbow joint, the elbow joint is a ninety-degree elbow, and a spray structure is provided at the end of the elbow joint away from the fourth connecting pipe through a connecting seat, a second stirring structure is provided between the upper wall of the upper cover and the discharge barrel, and the outlet end of the discharge barrel is provided at the end away from the upper cover.

[0007] Preferably, the first stirring structure includes a first motor, a first rotating shaft, a first auger blade and multiple groups of main rods, the first motor is fixedly connected to the upper end of the feed barrel, the first motor extension shaft penetrates the upper wall of the feed barrel and extends into the interior of the feed barrel, the first rotating shaft is fixedly connected to the end of the first motor extension shaft extending into the interior of the feed barrel through a coupling, the multiple groups of main rods are all fixedly connected to the outer wall of the first rotating shaft, the axial direction of the main rod is perpendicular to the axial direction of the first rotating shaft, the upper and lower ends of the main rod are fixedly connected to multiple groups of branch stirring rods in sequence according to the axial distribution of the main rod, the first auger blade is fixedly connected to the outer wall of the first rotating shaft and is located below the multiple groups of main rods, and the maximum outer edge of the first auger blade is slidably connected to the inner wall of the discharge pipe.

[0008] Preferably, the main rod is composed of a skeleton rod and a coating layer coated on the outer wall of the skeleton rod, and an electric heating plate is provided on the inner wall of the coating layer.

[0009] Preferably, the front wall of the distribution box is distributed on the left and right sides and is fixedly connected with the second connecting pipe, the first connecting pipe and the third connecting pipe in sequence, the ends of the second connecting pipe, the first connecting pipe and the third connecting pipe away from the distribution box are respectively fixedly connected to the outlet ends of the three groups of material pumps, the ends of the second connecting pipe, the first connecting pipe and the third connecting pipe facing the distribution box all penetrate the front wall of the distribution box and extend into the interior of the distribution box, the end of the second connecting pipe extending into the interior of the distribution box is fixedly connected to four groups of second hoses, the end of the first connecting pipe extending into the interior of the distribution box is fixedly connected to the first hose, and the end of the third connecting pipe extending into the interior of the distribution box is fixedly connected to four groups of third hoses, one end of the first hose away from the first connecting pipe, one end of the four groups of second hoses away from the second connecting pipe and one end of the four groups of third hoses away from the third connecting pipe all penetrate the interior of the fourth connecting pipe and the interior of the elbow joint in sequence and are fixedly connected to the upper wall of the connecting seat.

[0010] Preferably, the connecting seat is fixedly connected to the end of the elbow joint away from the fourth connecting pipe, the upper wall of the connecting seat is fixedly connected with the first joint in the center position, the upper wall of the connecting seat is fixedly connected with four groups of second joints and four groups of third joints respectively located on the periphery of the first joint, the four groups of second joints are respectively located on the front, back, left and right sides of the first joint, the four groups of third joints are respectively located on the front left, front right, rear left and rear right sides of the first joint, the end of the first hose extending into the interior of the elbow joint is fixedly connected to the first joint, the ends of the four groups of second hoses extending into the interior of the elbow joint are respectively fixedly connected to the four groups of second joints, and the ends of the four groups of third hoses extending into the interior of the elbow joint are respectively fixedly connected to the third joints.

[0011] Preferably, the spraying structure includes a nozzle, a first nozzle, four groups of second nozzles and four groups of third nozzles, the nozzle is arranged on the lower wall of the connecting seat, the first nozzle, four groups of second nozzles and four groups of third nozzles are all arranged on the inner wall of the nozzle in a vertically penetrating shape, the inner wall of the connecting seat is provided with a first channel, four groups of second channels and four groups of third channels that are vertically penetrating, the first nozzle is connected to the first joint through the first channel, the four groups of second nozzles are connected to the four groups of second joints through a group of second channels respectively, and the four groups of third nozzles are connected to the four groups of third joints through a group of second channels respectively.

[0012] Preferably, the upward projection of the first nozzle is in a cross shape, and the upward projections of the second nozzle and the third nozzle are both in a V shape. The four groups of the second nozzles and the third nozzles are respectively located between the eight angles of the cross shape of the first nozzle, and the spraying directions of the four groups of the second nozzles and the third nozzles are all inclined toward the spraying direction of the first nozzle.

[0013] Preferably, the second stirring structure includes a second motor, a second rotating shaft and a second auger blade, the second motor is fixedly connected to the upper wall of the upper cover, the second motor extension shaft passes through the upper wall of the upper cover and extends into the interior of the upper cover, the second rotating shaft is fixedly connected to one end of the second motor extension shaft extending into the interior of the upper cover through a coupling, the second auger blade is fixedly connected to the outer wall of the second rotating shaft and the second auger blade is located below the spraying structure, and the maximum outer edge of the second auger blade is in sliding contact with the inner wall of the discharge barrel.

[0014] The present invention provides a device for mixing raw materials for silicon carbide products. It has the following beneficial effects: 1. Compared with the prior art, in the raw material mixing device for silicon carbide products, the powder is mixed into slurry by a solvent and then injected into the leftmost and rightmost groups of three groups of feed barrels, and the viscous material is injected into the middle group of the three groups of feed barrels. The slurry and viscous material are extracted from the feed barrels by three groups of material pumps, and are sprayed out through the first nozzle, the second nozzle and the third nozzle on the nozzle and then merged. The first nozzle with a M-shaped cross-section cooperates with the second nozzle and the third nozzle with a V-shaped cross-section, which can achieve full fusion of the material after spraying, improve the uniformity of mixing the powder and the viscous material, and can easily control the ratio between the slurry formed by the mixture of the solvent and the powder and the viscous material by controlling the output of the three groups of material pumps, thereby greatly improving the mixing uniformity and increasing the production speed.

[0015] 2. Compared with the prior art, the raw material mixing device for silicon carbide products has a feed barrel provided with a plurality of branch stirring rods driven to rotate by a first motor, which continuously stir the slurry and viscous materials. Continuous stirring of the slurry can improve the mixing uniformity between various powders and solvents and avoid stratification. An electric heating plate is also provided in the coating layer of the main rod to heat the viscous material and maintain the temperature, increase the temperature to reduce its viscosity, improve the smoothness of feeding, and ensure the smoothness of subsequent spraying and mixing.

[0016] 3. Compared with the prior art, in the silicon carbide product raw material mixing device, the slurry formed by the mixture of solvent and powder and the viscous material can be continuously fed through the corresponding feeding pipe, and the sprayed mixed material can be continuously discharged after the second auger blade is driven to rotate by the second motor, thereby realizing continuous production and greatly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a partial cross-sectional view of the internal structure of the feed barrel and the discharge pipe of the present invention; Figure 3 It is a partial cross-sectional view of the top view of the connection structure of the skeleton rod, the coating layer and the electric heating plate of the present invention; Figure 4 It is a partial cross-sectional view of the internal structure of the distribution box of the present invention; Figure 5 It is a partial sectional view of the internal structure of the upper cover and the discharge barrel of the present invention; Figure 6 This is a schematic diagram of the connection structure of the connection base and the nozzle of the present invention; Figure 7 It is a top view schematic diagram of the connection seat and nozzle connection structure of the present invention; Figure 8 It is a schematic diagram of the connection seat and the nozzle connection structure of the present invention from above; Fig. 9 For the present invention Figure 8 Partial section view along AA line.

[0018] Among them, 1. feed barrel; 2. feed pipe; 3. discharge pipe; 4. first motor; 5. material pump; 6. distribution box; 7. upper cover; 8. second motor; 9. discharge barrel; 10. first rotating shaft; 11. main rod; 1101. skeleton rod; 1102. coating layer; 1103. electric heating plate; 12. branch stirring rod; 13. first auger blade; 14. first connecting pipe; 15. second connecting pipe; 16. third connecting pipe; 17. first hose; 18. second hose; 19. third hose; 20. fourth connecting pipe; 21. elbow joint; 22. connecting seat; 23. nozzle; 24. first joint; 25. second joint; 26. third joint; 27. second rotating shaft; 28. second auger blade; 29. ​​first nozzle; 30. second nozzle; 31. third nozzle. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example: like Figures 1 to 9 As shown, an embodiment of the present invention provides a raw material mixing device for silicon carbide products, including three groups of feed barrels 1, three groups of material pumps 5, a group of distribution boxes 6 and a group of discharge barrels 9. The rear walls of the three groups of feed barrels 1 and near the upper wall are fixedly connected with feed pipes 2, and the lower ends of the three groups of feed barrels 1 are provided with discharge pipes 3. The inlet ends of the three groups of material pumps 5 are respectively fixedly connected to the ends of the three groups of discharge pipes 3 away from the feed barrels 1, and the outlet ends of the three groups of material pumps 5 are fixedly connected to the front wall of the distribution box 6. The rear wall of the distribution box 6 is fixedly connected to the discharge barrel 9 through a fourth connecting pipe 20. The end of the fourth connecting pipe 20 toward the distribution box 6 passes through the rear wall of the distribution box 6 and extends into the interior of the distribution box 6. The upper end of the discharge barrel 9 is fixedly The upper cover 7 is fixedly connected, and one end of the fourth connecting pipe 20 away from the distribution box 6 passes through the front wall of the upper cover 7 and extends into the upper cover 7. The distribution box 6 is fixedly connected to the discharge barrel 9 through the fourth connecting pipe 20 and the upper cover 7. The inner wall of the distribution box 6 is pasted with an insulation layer. In this embodiment, the raw materials of silicon carbide products are consistent with those in the prior art. The powder is powdered silicon dioxide, powdered wood chips and powdered petroleum coke powder. The viscous material is epoxy resin. The epoxy resin is added to the inside of the middle group of the three groups of feed barrels 1. The powder is humidified by a solvent and made into a slurry and added to the inside of the left group and the right group of the three groups of feed barrels 1. The feed barrel 1 can be continuously fed through the feed pipe 2; In order to avoid stratification of materials inside the feed barrel 1, a first stirring structure is provided inside the three groups of feed barrels 1. The first stirring structure includes a first motor 4, a first rotating shaft 10, a first auger blade 13 and multiple groups of main rods 11. The first motor 4 is fixedly connected to the upper end of the feed barrel 1. The first motor 4 extends out of the shaft through the upper wall of the feed barrel 1 and extends into the feed barrel 1. The first rotating shaft 10 is fixedly connected to the end of the first motor 4 extending out of the shaft extending into the feed barrel 1 through a coupling. Multiple groups of main rods 11 are fixedly connected to the outer wall of the first rotating shaft 10. The main rods 11 are axially aligned with the first The shaft 10 is axially vertical, and the upper and lower ends of the main rod 11 are fixedly connected with multiple groups of branch stirring rods 12 in sequence according to the axial distribution of the main rod 11. The first auger blade 13 is fixedly connected to the outer wall of the first shaft 10 and is located below the multiple groups of main rods 11. The maximum outer edge of the first auger blade 13 is slidably connected to the inner wall of the discharge pipe 3. During processing, the first motor 4 starts to rotate and drives the first shaft 10 to rotate, and the first shaft 10 drives the multiple groups of main rods 11 to rotate. The slurry and epoxy resin are fully stirred by the multiple groups of branch stirring rods 12 on the outer walls of the multiple groups of main rods 11 to avoid stratification. In order to improve the fluidity of epoxy resin, the main rod 11 is composed of a skeleton rod 1101 and a coating layer 1102 coated on the outer wall of the skeleton rod 1101. The inner wall of the coating layer 1102 is provided with an electric heating plate 1103. The electric heating plate 1103 can be powered by a common conductive slip ring on the market while being rotated. After being powered on and heated, the epoxy resin can be heated and maintained at a set temperature while being stirred. Increasing the temperature of the epoxy resin can effectively reduce its viscosity, thereby improving its fluidity and facilitating the subsequent pumping and mixing of materials. In order to quantitatively transport the slurry and epoxy resin inside the feed barrel 1, the front wall of the distribution box 6 is distributed on the left and right sides and is fixedly connected with the second connecting pipe 15, the first connecting pipe 14 and the third connecting pipe 16 in sequence. The ends of the second connecting pipe 15, the first connecting pipe 14 and the third connecting pipe 16 away from the distribution box 6 are respectively fixedly connected to the outlet ends of the three groups of material pumps 5. The ends of the second connecting pipe 15, the first connecting pipe 14 and the third connecting pipe 16 facing the distribution box 6 all penetrate the front wall of the distribution box 6 and extend into the distribution box 6. The end of the second connecting pipe 15 extending into the distribution box 6 is fixedly connected with four groups of second hoses 18. The first connecting pipe 14 extends into the distribution box 6. One end of the third connecting pipe 16 is fixedly connected to the first hose 17, and one end of the third connecting pipe 16 extending into the distribution box 6 is fixedly connected to four groups of third hoses 19. One end of the first hose 17 away from the first connecting pipe 14, one end of the four groups of second hoses 18 away from the second connecting pipe 15, and one end of the four groups of third hoses 19 away from the third connecting pipe 16 all pass through the fourth connecting pipe 20 and the elbow joint 21 in sequence and are fixedly connected to the upper wall of the connecting seat 22. The slurry and epoxy resin in the feed barrel 1 can be quantitatively transported by the material pump 5 to improve the accuracy of the material ratio, and the slurry and epoxy resin are transported by the material pump 5 to form a delivery pressure to improve the spraying effect; In order to evenly transport the slurry and epoxy resin to the inside of the nozzle 23, the connecting seat 22 is fixedly connected to the end of the elbow joint 21 away from the fourth connecting pipe 20, and the upper wall of the connecting seat 22 is fixedly connected to the first joint 24 at the center position, and the upper wall of the connecting seat 22 is fixedly connected to four groups of second joints 25 and four groups of third joints 26 at the periphery of the first joint 24. The four groups of second joints 25 are respectively located at the front, back, left and right sides of the first joint 24, and the four groups of third joints 26 are respectively located at the left front, right front, left rear and right rear sides of the first joint 24. The first hose 17 extends One end of the four sets of second hoses 18 extending into the elbow joint 21 is fixedly connected to the first joint 24, one end of the four sets of second hoses 18 extending into the elbow joint 21 is fixedly connected to the four sets of second joints 25, and one end of the four sets of third hoses 19 extending into the elbow joint 21 is fixedly connected to the third joints 26, respectively. The slurry sent from the second connecting pipe 15 can be divided into four equal parts through the four sets of second hoses 18, and the slurry sent from the third connecting pipe 16 can be divided into four equal parts through the four sets of third hoses 19. The first hose 17 can send the epoxy resin sent from the first connecting pipe 14 to the nozzle 23; In order to evenly mix the slurry and the epoxy resin together, one end of the fourth connecting pipe 20 extending into the interior of the upper cover 7 is fixedly connected to an elbow joint 21, the elbow joint 21 is a 90-degree elbow, and the end of the elbow joint 21 away from the fourth connecting pipe 20 is provided with a spraying structure through a connecting seat 22, the spraying structure includes a nozzle 23, a first nozzle 29, four groups of second nozzles 30 and four groups of third nozzles 31, the nozzle 23 is arranged on the lower wall of the connecting seat 22, the first nozzle 29, the four groups of second nozzles 30 and the four groups of third nozzles 31 are all arranged on the inner wall of the nozzle 23 in a vertically through-through shape, the inner wall of the connecting seat (22) is provided with a first channel, four groups of second channels and four groups of third channels that are vertically through-through, the first nozzle 29 and the first joint 24 are connected through the first channel, the four groups of second nozzles 30 and the four groups of second joints 25 are respectively connected through a group of second channels, the four groups of third nozzles 31 and the four groups of third joints 26 are respectively connected through a group of second channels, the first nozzle 29 The bottom projection is in the shape of a cross. The bottom projections of the second nozzle 30 and the third nozzle 31 are both in the shape of a V. The four groups of second nozzles 30 and the third nozzles 31 are respectively located between the eight angles of the cross of the first nozzle 29. The injection directions of the four groups of second nozzles 30 and the third nozzles 31 are all inclined toward the injection direction of the first nozzle 29. After the epoxy resin is pressurized and transported by the material pump 5, it is ejected from the first nozzle 29. Since the cross section of the first nozzle 29 is in the shape of a cross, the cross section of the epoxy resin ejected is also in the shape of a cross. The slurry in the right two groups of feed barrels 1 is conveyed by the material pump 5 after being pressurized, and then divided by the four groups of second hoses 18 and the third hoses 19, and sprayed out from the four groups of second nozzles 30 and the four groups of third nozzles 31 respectively. Since the spraying directions of the four groups of second nozzles 30 and the third nozzles 31 are inclined toward the spraying direction of the first nozzle 29, the slurry is fully integrated with the epoxy resin dispensed from the first nozzle 29 when sprayed out from the four groups of second nozzles 30 and the four groups of third nozzles 31, thereby achieving the purpose of uniform mixing; In order to achieve the purpose of continuous production, a second stirring structure is arranged between the upper wall of the upper cover 7 and the discharge barrel 9. The outlet end of the discharge barrel 9 is arranged at an end away from the upper cover 7. The second stirring structure includes a second motor 8, a second rotating shaft 27 and a second auger blade 28. The second motor 8 is fixedly connected to the upper wall of the upper cover 7. The second motor 8 extends a shaft that passes through the upper wall of the upper cover 7 and extends into the interior of the upper cover 7. The second rotating shaft 27 is fixedly connected to the end of the second motor 8 extending shaft that extends into the interior of the upper cover 7 through a coupling. The second auger blade 28 is fixedly connected to the outer wall of the second rotating shaft 27 and the second auger blade 28 is located below the spraying structure. The maximum outer edge of the second auger blade 28 is in sliding contact with the inner wall of the discharge barrel 9. The material sprayed and mixed by the nozzle 23 is driven by the second auger blade 28 driven by the second motor 8 to move toward the outlet end of the discharge barrel 9, thereby achieving the purpose of continuous discharging.

[0021] Working principle: In this embodiment, the raw materials of silicon carbide products are consistent with those in the prior art. The powder materials are powdered silicon dioxide, powdered wood chips and powdered petroleum coke powder. The viscous material is epoxy resin. The epoxy resin is added to the interior of the middle group of three feed barrels 1. The powder materials are humidified by solvents and made into slurry. The slurry is added to the interior of the left and right groups of the three feed barrels 1. The feed barrel 1 is continuously fed through the feed pipe 2. During processing, the first motor 4 starts to rotate and drives the first rotating shaft 10 to rotate. The first rotating shaft 10 drives the multiple groups of main rods 11 to rotate. The multiple groups of branch stirring rods 12 on the outer wall of 11 can fully stir the slurry and epoxy resin to avoid stratification. The electric heating plate 1103 can be powered by a common conductive slip ring on the market to keep the epoxy resin rotating. After being powered on and heated, the epoxy resin can be heated and maintained at a set temperature while stirring. The increase in temperature of the epoxy resin can effectively reduce its viscosity to improve fluidity and facilitate the subsequent pumping and mixing of materials. The slurry and epoxy resin in the feed barrel 1 can be quantitatively transported through the material pump 5 to improve the accuracy of the material ratio, and the slurry and epoxy resin can be transported by the material pump 5. The resin forms a conveying pressure to improve the spraying effect. The slurry sent from the second connecting pipe 15 can be divided into four equal parts through the four groups of second hoses 18, and the slurry sent from the third connecting pipe 16 can be divided into four equal parts through the four groups of third hoses 19. The first hose 17 can send the epoxy resin sent from the first connecting pipe 14 to the nozzle 23. After the epoxy resin is pressurized and conveyed by the material pump 5, it is sprayed out from the first nozzle 29. Since the cross-section of the first nozzle 29 is in the shape of a cross, the cross-section of the epoxy resin sprayed is also in the shape of a cross. After the slurry in the left and right feeding barrels 1 is pressurized and conveyed by the material pump 5, it is sprayed out from the first nozzle 29. After being divided by four groups of second hoses 18 and third hoses 19, the slurry is ejected from four groups of second nozzles 30 and four groups of third nozzles 31 respectively. Since the ejection directions of the four groups of second nozzles 30 and third nozzles 31 are inclined toward the ejection direction of the first nozzle 29, the slurry is fully integrated with the epoxy resin dispensed from the first nozzle 29 when being ejected from the four groups of second nozzles 30 and four groups of third nozzles 31, thereby achieving the purpose of uniform mixing. The mixed material sprayed by the nozzle 23 is driven by the second auger blade 28 driven by the second motor 8, and moves toward the outlet end of the discharge barrel 9, thereby achieving the purpose of continuous discharge.

[0022] While 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 device for mixing raw materials for silicon carbide products, characterized in that: The invention comprises three groups of feed barrels (1), three groups of material pumps (5), a group of distribution boxes (6) and a group of discharge barrels (9), wherein the three groups of feed barrels (1) are all provided with a first stirring structure inside, the rear walls of the three groups of feed barrels (1) and near the upper wall are all fixedly connected with a feed pipe (2), the lower ends of the three groups of feed barrels (1) are all provided with a discharge pipe (3), the inlet ends of the three groups of material pumps (5) are respectively fixedly connected with one end of the three groups of discharge pipes (3) away from the feed barrels (1), the outlet ends of the three groups of material pumps (5) are all fixedly connected with the front wall of the distribution box (6), the rear wall of the distribution box (6) is fixedly connected with the discharge barrel (9) via a fourth connecting pipe (20), the end of the fourth connecting pipe (20) facing the distribution box (6) passes through the rear wall of the distribution box (6) and extends into the interior of the distribution box (6), The upper end of the discharge barrel (9) is fixedly connected to an upper cover (7); one end of the fourth connecting pipe (20) away from the distribution box (6) passes through the front wall of the upper cover (7) and extends into the interior of the upper cover (7); the distribution box (6) is fixedly connected to the discharge barrel (9) through the fourth connecting pipe (20) and the upper cover (7); an insulation layer is adhered to the inner wall of the distribution box (6); one end of the fourth connecting pipe (20) extending into the interior of the upper cover (7) is fixedly connected to an elbow joint (21); the elbow joint (21) is a 90-degree elbow; one end of the elbow joint (21) away from the fourth connecting pipe (20) is provided with a spraying structure through a connecting seat (22); a second stirring structure is provided between the upper wall of the upper cover (7) and the discharge barrel (9); and the outlet end of the discharge barrel (9) is provided at the end away from the upper cover (7).

2. A silicon carbide product raw material mixing device according to claim 1, characterized in that: The first stirring structure comprises a first motor (4), a first rotating shaft (10), a first auger blade (13) and a plurality of main rods (11); the first motor (4) is fixedly connected to the upper end of the feed barrel (1); a shaft extending from the first motor (4) passes through the upper wall of the feed barrel (1) and extends into the interior of the feed barrel (1); the first rotating shaft (10) is fixedly connected to one end of the shaft extending from the first motor (4) and extending into the interior of the feed barrel (1) through a coupling; the plurality of main rods (11) are all fixedly connected to the outer wall of the first rotating shaft (10); the axial direction of the main rod (11) is perpendicular to the axial direction of the first rotating shaft (10); the upper and lower ends of the main rod (11) are fixedly connected to a plurality of branch stirring rods (12) in sequence according to the axial distribution of the main rod (11); the first auger blade (13) is fixedly connected to the outer wall of the first rotating shaft (10) and is located below the plurality of main rods (11); the maximum outer edge of the first auger blade (13) is in sliding contact with the inner wall of the discharge pipe (3).

3. A silicon carbide product raw material mixing device according to claim 2, characterized in that: The main rod (11) is composed of a skeleton rod (1101) and a coating layer (1102) coating the outer wall of the skeleton rod (1101), and an electric heating plate (1103) is provided on the inner wall of the coating layer (1102).

4. A silicon carbide product raw material mixing device according to claim 3, characterized in that: The front wall of the distribution box (6) is fixedly connected with a second connecting pipe (15), a first connecting pipe (14) and a third connecting pipe (16) in a left-right distribution order. The ends of the second connecting pipe (15), the first connecting pipe (14) and the third connecting pipe (16) away from the distribution box (6) are fixedly connected to the outlet ends of the three groups of material pumps (5) respectively. The ends of the second connecting pipe (15), the first connecting pipe (14) and the third connecting pipe (16) facing the distribution box (6) all penetrate the front wall of the distribution box (6) and extend into the interior of the distribution box (6). The end of the second connecting pipe (15) extending into the interior of the distribution box (6) is fixedly connected to the outlet ends of the three groups of material pumps (5). Four groups of second hoses (18) are connected, one end of the first connecting pipe (14) extending into the interior of the distribution box (6) is fixedly connected to the first hose (17), one end of the third connecting pipe (16) extending into the interior of the distribution box (6) is fixedly connected to four groups of third hoses (19), one end of the first hose (17) away from the first connecting pipe (14), one end of the four groups of second hoses (18) away from the second connecting pipe (15), and one end of the four groups of third hoses (19) away from the third connecting pipe (16) all pass through the interior of the fourth connecting pipe (20), the interior of the elbow joint (21), and are fixedly connected to the upper wall of the connecting seat (22).

5. A silicon carbide product raw material mixing device according to claim 4, characterized in that: The connection seat (22) is fixedly connected to an end of the elbow joint (21) away from the fourth connection pipe (20); a first joint (24) is fixedly connected to the upper wall of the connection seat (22) and located in the center; four groups of second joints (25) and four groups of third joints (26) are fixedly connected to the upper wall of the connection seat (22) and located outside the first joint (24); the four groups of second joints (25) are respectively located on the front, back, left and right sides of the first joint (24); the four groups of third joints (26) are respectively located on the front left, front right, rear left and rear right sides of the first joint (24); one end of the first hose (17) extending into the elbow joint (21) is fixedly connected to the first joint (24); one end of the four groups of second hoses (18) extending into the elbow joint (21) is fixedly connected to the four groups of second joints (25); and one end of the four groups of third hoses (19) extending into the elbow joint (21) is fixedly connected to the third joint (26).

6. A silicon carbide product raw material mixing device according to claim 5, characterized in that: The spraying structure comprises a spray head (23), a first spray port (29), four groups of second spray ports (30) and four groups of third spray ports (31); the spray head (23) is arranged on the lower wall of the connecting seat (22); the first spray port (29), the four groups of second spray ports (30) and the four groups of third spray ports (31) are all arranged on the inner wall of the spray head (23) in a vertically penetrating shape; the inner wall of the connecting seat (22) is provided with a group of first channels, four groups of second channels and four groups of third channels which are vertically penetrating; the first spray port (29) and the first joint (24) are connected via the first channel; the four groups of the second spray ports (30) and the four groups of second joints (25) are respectively connected via a group of second channels; and the four groups of the third spray ports (31) and the four groups of third joints (26) are respectively connected via a group of second channels.

7. A silicon carbide product raw material mixing device according to claim 6, characterized in that: The projection of the first nozzle (29) when viewed from above is in the shape of a cross; the projections of the second nozzle (30) and the third nozzle (31) when viewed from above are both in the shape of a V; the four groups of the second nozzles (30) and the third nozzles (31) are respectively located between the eight included angles of the cross of the first nozzle (29); and the spraying directions of the four groups of the second nozzles (30) and the third nozzles (31) are all inclined towards the spraying direction of the first nozzle (29).

8. A silicon carbide product raw material mixing device according to claim 7, characterized in that: The second stirring structure comprises a second motor (8), a second rotating shaft (27) and a second auger blade (28); the second motor (8) is fixedly connected to the upper wall of the upper cover (7); a shaft extending from the second motor (8) passes through the upper wall of the upper cover (7) and extends into the interior of the upper cover (7); the second rotating shaft (27) is fixedly connected to one end of the shaft extending from the second motor (8) extending into the interior of the upper cover (7) via a coupling; the second auger blade (28) is fixedly connected to the outer wall of the second rotating shaft (27) and the second auger blade (28) is located below the spraying structure; and the largest outer edge of the second auger blade (28) is in sliding contact with the inner wall of the discharge barrel (9).

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