Sintering device for silicon carbide sealing ring

Abstract

The utility model relates to the field of preparation of silicon carbide ceramic sealing rings, in particular to a sintering device of a silicon carbide sealing ring, which comprises a bottom plate, a sintering box arranged at the top of the bottom plate, a forming mechanism and a configuration mechanism, and the forming mechanism is arranged at the top of the bottom plate, positioned on the side surface of the sintering box and used for pressing and forming prepared silicon carbide powder; the configuration mechanism is arranged at the top of the bottom plate, located on the side, away from the sintering box, of the forming mechanism and used for evenly stirring the silicon carbide raw materials and distributing the silicon carbide raw materials equivalently. Through the arrangement of the configuration mechanism, the vertical stirring blades simultaneously rotate and revolve, so that silicon carbide powder can be stirred more sufficiently, the spiral stirring blades can stir the materials up and down, the stirring effect is further improved, the silicon carbide powder can be ensured to be uniformly distributed in the mixing process through sufficient stirring, and the mixing efficiency is improved. And the condition that the local concentration is too high or too low is avoided, so that the component uniformity of the sintered sealing ring is improved, and the overall performance of a product is improved.

Description

Technical Field

[0001] The utility model relates to the field of preparation of silicon carbide ceramic sealing rings, and particularly relates to a sintering device for silicon carbide sealing rings. Background Technique

[0002] Silicon carbide ceramic sealing and grinding rings have been widely used in various pumps and machinery with higher requirements, and have been widely applied in the field of mechanical seals.

[0003] Chinese Patent with publication number CN215113929U discloses a hot press sintering machine for preparing silicon carbide ceramic sealing rings, which includes a bearing table. On the upper surface of the bearing table, there is a lower heating plate. On both sides of the lower heating plate, there are support plates respectively. On the top of the support plates, there is a fixing plate. On the fixing plate, there is a hydraulic cylinder. The piston end of the hydraulic cylinder is connected with a moving plate. On the bottom of the moving plate, there is an upper heating plate. Below the bearing table, there is a base. Between the bottom of the bearing table and the top of the base, there are support rods. On the bottom of the base, there is a shock absorption device. The shock absorption device includes a support leg and a mounting seat. There is a groove on the mounting seat. Between the bottom of the support leg and the inner bottom of the groove, there is a compression spring. On the bottom of the mounting seat, there are self-locking universal wheels. The utility model has the advantages of high cooling efficiency, long service life of the equipment, preventing internal components from being damaged by oil fume, and convenient movement.

[0004] However, the above disclosed solution has the following deficiencies: The existing sintering device for silicon carbide sealing rings is not evenly stirred before sintering, and at the same time, it cannot accurately quantitatively transport, resulting in unequal quality of the pressed sealing rings. Therefore, it is necessary to invent a sintering device for silicon carbide sealing rings to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to propose a sintering device for silicon carbide sealing rings aiming at the problems existing in the background technique.

[0006] The technical solution of the utility model: A sintering device for silicon carbide sealing rings includes a bottom plate and a sintering box arranged on the top of the bottom plate; it also includes:

[0007] A forming mechanism, arranged on the top of the bottom plate and on the side of the sintering box, used to press the configured silicon carbide powder into a shape;

[0008] And a configuration mechanism, arranged on the top of the bottom plate and on the side of the forming mechanism away from the sintering box, used to evenly stir the silicon carbide raw materials and distribute them in equal amounts.

[0009] Preferably, the forming mechanism includes a connecting plate, a cylinder, a hydraulic rod, a pressing plate and a forming die;

[0010] The connecting plate is arranged on the side of the configuration mechanism, the air cylinder is arranged on the top of the connecting plate, the hydraulic rod is arranged at the output end of the air cylinder, the pressing plate is arranged at the bottom of the hydraulic rod, and the forming die is arranged on the top of the bottom plate.

[0011] Preferably, the configuration mechanism includes a configuration cylinder, a rotating door, a leak-proof plate, a bracket, an upper and lower stirring assembly, an edge stirring assembly, and an equal-quantity transportation assembly;

[0012] The bracket is arranged on the top of the bottom plate, the configuration cylinder is arranged on the top of the bracket, the rotating door is rotatably arranged on the top of the configuration cylinder, and the leak-proof plate is arranged inside the configuration cylinder;

[0013] The upper and lower stirring assembly is arranged inside the configuration cylinder to transport the materials at the bottom to the top and stir them;

[0014] The edge stirring assembly is arranged at the bottom of the upper and lower stirring assembly to stir the materials continuously transported by the upper and lower stirring assembly, and at the same time, stir the materials at the edge of the configuration cylinder with both self-rotation and revolution;

[0015] The equal-quantity transportation assembly is arranged at the bottom of the configuration cylinder to transport the evenly stirred silicon carbide powder to the forming mechanism in equal quantities.

[0016] Preferably, the upper and lower stirring assembly includes a first motor, a first rotating shaft, and a spiral stirring blade;

[0017] The first motor is arranged on the top of the configuration cylinder, the first rotating shaft is arranged at the output end of the first motor, and the spiral stirring blade is arranged on the outside of the first rotating shaft.

[0018] Preferably, the edge stirring assembly includes a gear ring, a circular gear, a turntable, a connecting shaft, and a vertical stirring blade;

[0019] The gear ring is rotatably arranged at the bottom of the first rotating shaft, the circular gear is arranged on the outside of the gear ring and meshes with the gear ring, the connecting shaft is arranged on the top of the circular gear, the turntable is rotatably arranged at one end of the connecting shaft close to the circular gear, and the vertical stirring blade is arranged on the outside of the connecting shaft.

[0020] Preferably, the equal-quantity transportation assembly includes a connecting pipe, an electric valve, a second motor, a second rotating shaft, a transfer disk, a connecting ring, and a discharge pipe;

[0021] The connecting pipe is arranged inside the leak-proof plate, the electric valve is rotatably arranged inside the connecting pipe, the connecting ring is arranged at the bottom of the connecting pipe, the transfer disk is rotatably arranged inside the connecting ring, the second rotating shaft is arranged at the center of the transfer disk, the second motor is arranged at the end of the second rotating shaft, and the discharge pipe is arranged at the bottom of the connecting ring.

[0022] Compared with the prior art, the utility model has the following beneficial technical effects: through the arrangement of the configuration mechanism, the vertical stirring blades rotate and revolve simultaneously, which can make the stirring of silicon carbide powder more sufficient. At the same time, the spiral stirring blades can stir the materials up and down, further improving the stirring effect. Sufficient stirring can ensure the uniform distribution of silicon carbide powder during the mixing process, avoiding the situation of too high or too low local concentration. This helps to improve the compositional uniformity of the sealing ring after sintering, thereby enhancing the overall performance of the product. At the same time, the uniformly distributed powder helps to reduce defects such as pores and cracks generated due to uneven composition during the sintering process, thereby improving the density and mechanical strength of the sealing ring, and enabling it to be heated and diffused more evenly, which is beneficial to the progress of the sintering reaction, shortening the sintering cycle and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of an embodiment of the utility model;

[0024] Figure 2 is a schematic structural diagram of the forming mechanism;

[0025] Figure 3 is a schematic structural diagram of the configuration mechanism;

[0026] Figure 4 is a schematic internal structural diagram of the configuration mechanism;

[0027] Figure 5 is a schematic bottom structural diagram of the configuration mechanism.

[0028] Reference numerals: 1, bottom plate; 2, sintering box; 301, configuration cylinder; 302, rotating door; 303, bracket; 304, motor one; 305, connecting pipe; 306, connecting ring; 307, discharge pipe; 308, rotating shaft one; 309, spiral stirring blade; 310, leak-proof plate; 311, electric valve; 312, transfer disk; 313, rotating shaft two; 314, turntable; 315, gear ring; 316, circular gear; 317, connecting shaft; 318, vertical stirring blade; 319, motor two; 4, connecting plate; 5, cylinder; 6, hydraulic rod; 7, pressing plate; 8, forming die. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Embodiment 1

[0030] As Figures 1-3 shown, a sintering device for a silicon carbide sealing ring proposed by the utility model includes a bottom plate 1, a sintering box 2 arranged on the top of the bottom plate 1, a forming mechanism, and a configuration mechanism:

[0031] The forming mechanism is arranged on the top of the bottom plate 1 and on the side of the sintering box 2, and is used to press the configured silicon carbide powder into a shape;

[0032] The configuration mechanism is arranged on the top of the bottom plate 1 and on the side of the forming mechanism away from the sintering box 2, and is used to evenly stir the silicon carbide raw materials and distribute them in equal amounts.

[0033] The forming mechanism includes a connecting plate 4, a cylinder 5, a hydraulic rod 6, a pressing plate 7 and a forming die 8; the connecting plate 4 is arranged on the side of the configuration mechanism, the cylinder 5 is arranged on the top of the connecting plate 4, the hydraulic rod 6 is arranged at the output end of the cylinder 5, the pressing plate 7 is arranged at the bottom of the hydraulic rod 6, the forming die 8 is arranged on the top of the bottom plate 1, the forming die 8 and the pressing plate 7 are facing each other, the top of the forming die 8 is an annular structure with an inclined surface, which is convenient for the configured silicon carbide powder to enter the forming die 8, and the bottom of the pressing plate 7 is in the shape of a sealing ring, so that a sealing ring can be pressed.

[0034] Embodiment 2

[0035] As Figures 4-5 shown, a sintering device for a silicon carbide sealing ring proposed by the present utility model, compared with Embodiment 1, this embodiment details the structure of the configuration mechanism.

[0036] The configuration mechanism includes a configuration cylinder 301, a rotating door 302, a leak-proof plate 310, a bracket 303, an upper and lower stirring assembly, an edge stirring assembly, and an equal-amount transportation assembly; the bracket 303 is arranged on the top of the bottom plate 1, the configuration cylinder 301 is arranged on the top of the bracket 303, the rotating door 302 is rotatably arranged on the top of the configuration cylinder 301, the leak-proof plate 310 is arranged inside the configuration cylinder 301, and the leak-proof plate 310 can prevent materials from leaking into the bottom of the edge stirring mechanism during the stirring process, thus affecting the operation of the mechanism; the upper and lower stirring assembly is arranged inside the configuration cylinder 301 to transport the materials at the bottom to the top and stir them; the edge stirring assembly is arranged at the bottom of the upper and lower stirring assembly to stir the materials continuously transported by the upper and lower stirring assembly, and at the same time, stir the materials at the edge of the configuration cylinder 301 with both self-rotation and revolution; the equal-amount transportation assembly is arranged at the bottom of the configuration cylinder 301 to transport the uniformly stirred silicon carbide powder to the molding mechanism in equal amounts. The upper and lower stirring assembly includes a first motor 304, a first rotating shaft 308, and a spiral stirring blade 309; the first motor 304 is arranged on the top of the configuration cylinder 301, the first rotating shaft 308 is arranged at the output end of the first motor 304, and the spiral stirring blade 309 is arranged outside the first rotating shaft 308. Since the spiral stirring blade 309 is in a spiral upward shape, when the first motor 304 drives it to rotate, it can continuously transport the materials at the bottom upward, so that the materials in the configuration cylinder 301 are continuously renovated and stirred, making the stirring effect better. The edge stirring assembly includes a gear ring 315, a circular gear 316, a turntable 314, a connecting shaft 317, and a vertical stirring blade 318; the gear ring 315 is rotatably arranged at the bottom of the first rotating shaft 308 and is connected to the inner bottom of the configuration cylinder 301, the circular gear 316 is arranged outside the gear ring 315 and meshes with the gear ring 315, the connecting shaft 317 is arranged on the top of the circular gear 316, the turntable is rotatably arranged at one end of the connecting shaft 317 close to the circular gear 316, the vertical stirring blade 318 is arranged outside the connecting shaft 317, there are four circular gears 316, the inner side of the turntable is connected to the outside of the first rotating shaft 308, when the first rotating shaft 308 rotates, it drives the turntable to rotate, the turntable drives the connecting shaft 317 and the vertical stirring blade 318 to revolve, and at the same time, since the gear ring 315 is connected to the configuration cylinder 301, the circular gear 316 meshes with the gear ring 315 during revolution, so as to rotate, and the circular gear 316 drives the vertical stirring blade 318 to rotate through the connecting shaft 317, so that the vertical stirring blade 318 can rotate and revolve at the same time, making the stirring effect better.The equal - quantity transportation component includes a connecting pipe 305, an electric valve 311, a second motor 319, a second rotating shaft 313, a transfer disc 312, a connecting ring 306, and a discharge pipe 307; the connecting pipe 305 is arranged inside the leak - proof plate 310, the electric valve 311 is rotatably arranged inside the connecting pipe 305, the connecting ring 306 is arranged at the bottom of the connecting pipe 305, the transfer disc 312 is rotatably arranged inside the connecting ring 306, the second rotating shaft 313 is arranged at the center of the transfer disc 312, the second motor 319 is arranged at the end of the second rotating shaft 313, the discharge pipe 307 is arranged at the bottom of the connecting ring 306, three empty slots are arranged inside the transfer disc 312, the diameters of the empty slots, the inner diameter of the connecting pipe 305, and the inner diameter of the discharge pipe 307 are all the same. The second motor 319 is set by the computer to stop rotating whenever the empty slot of the transfer disc 312 reaches the bottom of the connecting pipe 305 and then start again after an interval. Since the sizes of the empty slots are the same, the same amount of silicon carbide powder is transported each time, making the subsequent pressing and sintering effects better.

[0037] In summary, when the present utility model is in use, various powders to be configured are poured into the configuration cylinder 301 through the rotating door 302. The first motor 304 is turned on. The first motor 304 drives the spiral stirring blade 309 to rotate through the first rotating shaft 308. When the spiral stirring blade 309 rotates, it can continuously transport the materials at the bottom upward, so that the materials in the configuration cylinder 301 are continuously renovated and stirred. At the same time, when the first rotating shaft 308 rotates, it drives the disc to rotate, and the disc drives the connecting shaft 317 and the vertical stirring blade 318 to perform a revolution. And since the gear ring 315 is connected to the configuration cylinder 301, the circular gear 316 meshes with the gear ring 315 when performing a revolution, so as to perform a self - rotation. The circular gear 316 drives the vertical stirring blade 318 to perform a self - rotation through the connecting shaft 317, so that the vertical stirring blade 318 can perform a self - rotation and a revolution at the same time. After the silicon carbide powder is stirred, the electric valve 311 is controlled by the computer to open, and the materials enter the transfer disc 312 through the connecting pipe 305. The second motor 319 drives the transfer disc 312 to rotate through the second rotating shaft 313. The second motor 319 is set by the computer to stop rotating whenever the empty slot of the transfer disc 312 reaches the bottom of the connecting pipe 305 and then start again after an interval. Since the sizes of the empty slots are the same, the same amount of silicon carbide powder is transported each time. When the empty slot of the transfer disc 312 rotates to the discharge pipe 307, the internal materials will enter the forming die 8 through the discharge pipe 307. The cylinder 5 is started, and the cylinder 5 drives the hydraulic rod 6 to drive the pressing plate 7 to move, so as to press the silicon carbide powder into a silicon carbide sealing ring, and then the sealing ring is taken out and put into the sintering box 2 for sintering treatment.

[0038] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited thereto, and various changes can be made without departing from the spirit of the present utility model within the scope of knowledge possessed by those skilled in the relevant technical field.

Claims

1. A sintering device for a silicon carbide sealing ring, comprising a bottom plate (1) and a sintering box (2) arranged on the top of the bottom plate (1); characterized in that, It further includes: A forming mechanism, which is arranged on the top of the bottom plate (1) and on the side of the sintering box (2), and is used to press the configured silicon carbide powder into a shape. And a configuration mechanism, which is arranged on the top of the bottom plate (1) and on the side of the forming mechanism away from the sintering box (2), and is used to evenly stir the silicon carbide raw materials and distribute them in equal amounts.

2. The sintering device for a silicon carbide sealing ring according to claim 1, characterized in that, The forming mechanism includes a connecting plate (4), a cylinder (5), a hydraulic rod (6), a pressing plate (7) and a forming die (8); The connecting plate (4) is arranged on the side of the configuration mechanism, the cylinder (5) is arranged on the top of the connecting plate (4), the hydraulic rod (6) is arranged at the output end of the cylinder (5), the pressing plate (7) is arranged at the bottom of the hydraulic rod (6), and the forming die (8) is arranged on the top of the bottom plate (1).

3. The sintering device for a silicon carbide sealing ring according to claim 1, characterized in that, The configuration mechanism includes a configuration cylinder (301), a rotating door (302), a leak-proof plate (310), a bracket (303), an up-and-down stirring assembly, an edge stirring assembly and an equal-amount transportation assembly; The bracket (303) is arranged on the top of the bottom plate (1), the configuration cylinder (301) is arranged on the top of the bracket (303), the rotating door (302) is rotatably arranged on the top of the configuration cylinder (301), and the leak-proof plate (310) is arranged inside the configuration cylinder (301); The up-and-down stirring assembly is arranged inside the configuration cylinder (301) and is used to transport the materials at the bottom to the top and stir them; The edge stirring assembly is arranged at the bottom of the up-and-down stirring assembly and is used to stir the materials continuously transported by the up-and-down stirring assembly, and at the same time, stir the materials at the edge of the configuration cylinder (301) with both self-rotation and revolution; The equal-amount transportation assembly is arranged at the bottom of the configuration cylinder (301) and is used to transport the evenly stirred silicon carbide powder in equal amounts into the forming mechanism.

4. The sintering device for the silicon carbide sealing ring according to claim 3, characterized in that, The up-and-down stirring assembly includes a first motor (304), a first rotating shaft (308) and a spiral stirring blade (309); The first motor (304) is arranged on the top of the configuration cylinder (301), the first rotating shaft (308) is arranged at the output end of the first motor (304), and the spiral stirring blade (309) is arranged on the outside of the first rotating shaft (308).

5. The sintering device for a silicon carbide sealing ring according to claim 4, characterized in that, The edge stirring assembly includes a gear ring (315), a circular gear (316), a turntable (314), a connecting shaft (317) and a vertical stirring blade (318); The gear ring (315) is rotatably arranged at the bottom of the first rotating shaft (308), the circular gear (316) is arranged on the outside of the gear ring (315) and meshes with the gear ring (315), the connecting shaft (317) is arranged on the top of the circular gear (316), the turntable is rotatably arranged at one end of the connecting shaft (317) close to the circular gear (316), and the vertical stirring blade (318) is arranged on the outside of the connecting shaft (317).

6. The sintering device for the silicon carbide sealing ring according to claim 5, characterized in that, The equal-amount transportation assembly includes a connecting pipe (305), an electric valve (311), a second motor (319), a second rotating shaft (313), a transfer disk (312), a connecting ring (306) and a discharge pipe (307); The connecting pipe (305) is arranged inside the leak-proof plate (310), the electric valve (311) is rotatably arranged inside the connecting pipe (305), the connecting ring (306) is arranged at the bottom of the connecting pipe (305), the transfer disk (312) is rotatably arranged inside the connecting ring (306), the second rotating shaft (313) is arranged at the axis center of the transfer disk (312), the second motor (319) is arranged at the end of the second rotating shaft (313), and the discharge pipe (307) is arranged at the bottom of the connecting ring (306).

Images