Synthesis device of high-purity hafnium diboride powder

Abstract

The utility model discloses a high-purity hafnium diboride powder synthesis device which comprises a synthesis tank, a fixing frame is fixedly installed on the outer wall of the synthesis tank, a plurality of supporting legs are fixedly installed on the outer wall of the fixing frame, a supporting plate is fixedly installed on the outer wall of the synthesis tank, and the upper end face of the supporting plate is fixedly connected with a connecting plate through a lifting mechanism. A cover plate is fixedly installed at the end of the connecting plate, an air inlet pipe and a liquid inlet pipe are fixedly installed on the upper end face of the cover plate, and the outer wall of the air inlet pipe and the outer wall of the liquid inlet pipe are jointly and fixedly connected with a spraying pipe. The stirring shaft, the gear, the toothed ring and other components are arranged, and the stirring shaft can rotate on the outer wall of the connecting block under the occlusion of the gear and the toothed plate, so that the stirring shaft can drive a plurality of stirring blades to rotate when moving up and down, and solid raw materials on different layers in the synthesis tank can be turned up and down to be stirred; and the hafnium diboride can be more uniformly mixed with a gaseous reactant and a liquid reactant, so that the synthesis purity of the hafnium diboride can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hafnium diboride preparation, in particular to a synthesis device for high-purity hafnium diboride powder. Background Technique

[0002] Hafnium diboride (HfB2) is a gray-black crystal with metallic luster. Its crystal structure belongs to the hexagonal system. As an excellent high-temperature ceramic material, hafnium diboride (HfB2) has a very high melting point (3380 °C), high purity, small particle size, uniform distribution, large specific surface area, high surface activity, low apparent density, high conductivity, and stable chemical properties.

[0003] Hafnium diboride can be formed by the reaction of hafnium dioxide, carbon and boron trioxide or boron carbide. It can also be formed by the reaction of hafnium tetrachloride, boron trichloride and hydrogen at temperatures above 2000 °C, or by the direct reaction of hafnium and boron. In the prior art, most of the synthesis devices for high-purity hafnium diboride powder have low synthesis efficiency of the stirring mechanism arranged inside during use, resulting in uneven mixing of the internal raw materials, reducing the purity of hafnium diboride synthesis, and lacking practicality. Therefore, it is necessary to redesign a synthesis device for high-purity hafnium diboride powder in view of the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a synthesis device for high-purity hafnium diboride powder.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A synthesis device for high-purity hafnium diboride powder, including a synthesis tank. A fixed frame is fixedly installed on the outer wall of the synthesis tank. Multiple support legs are fixedly installed on the outer wall of the fixed frame. A support plate is fixedly installed on the outer wall of the synthesis tank. The upper end surface of the support plate is fixedly connected with a connecting plate through a lifting mechanism. A cover plate is fixedly installed at the end of the connecting plate. An air inlet pipe and a liquid inlet pipe are fixedly installed on the upper end surface of the cover plate. A spray pipe is fixedly connected to the outer walls of the air inlet pipe and the liquid inlet pipe. A plurality of spray holes communicating with the inside are opened on the outer wall of the spray pipe. A reciprocating lead screw is rotatably installed on the bottom wall of the cover plate through a moving frame. A motor connected to the reciprocating lead screw is fixedly installed on the upper end surface of the cover plate. A lead screw sleeve is threadedly installed on the outer wall of the reciprocating lead screw through a limiting mechanism. Stirring shafts are rotatably installed on both outer walls of the lead screw sleeve through connecting mechanisms. A plurality of stirring blades are fixedly installed on the outer walls of the two stirring shafts through installation mechanisms. Gears are fixedly installed on the outer walls of the two stirring shafts. Tooth plates engaged with the gears on the same side are fixedly installed on both inner walls of the synthesis tank. A discharge pipe communicating with the inside is fixedly installed on the outer bottom wall of the synthesis tank.

[0007] Preferably, the lifting mechanism includes a cylinder fixedly installed on the upper end surface of the support plate, and the telescopic end of the cylinder is fixedly connected to the bottom wall of the connecting plate.

[0008] Preferably, the limiting mechanism includes a limiting rod fixedly installed inside the moving frame, and the limiting rod slidably penetrates through the lead screw sleeve.

[0009] Preferably, the connecting mechanism includes a connecting block fixedly installed on the outer wall of the lead screw sleeve, and the stirring shaft is rotatably installed on the outer wall of the connecting block.

[0010] Preferably, the installation mechanism includes an installation sleeve fixedly installed on the outer wall of the stirring shaft, and each stirring blade is fixedly installed on the outer wall of the installation sleeve.

[0011] Preferably, a sealing gasket is fixedly installed on the bottom wall of the cover plate, and the sealing gasket is made of vulcanized rubber.

[0012] Advantages of the present utility model:

[0013] 1. By providing components such as a stirring shaft, a gear, and a toothed ring, under the engagement of the gear and the toothed plate, the stirring shaft can rotate on the outer wall of the connecting block, so that when the stirring shaft moves up and down, it can drive multiple stirring blades to rotate, thereby enabling the solid raw materials at different levels inside the synthesis tank to be turned over and stirred up and down, making it possible to mix more uniformly with gaseous reactants and liquid reactants, and thus improving the purity of hafnium diboride synthesis.

[0014] 2. By providing components such as an air inlet pipe, a liquid inlet pipe, and a spray pipe, the air inlet pipe and the liquid inlet pipe can respectively transport gaseous reactants and liquid reactants into the spray pipe, and the gaseous reactants and liquid reactants are then sprayed out from the spray pipe through multiple spray holes, thereby enabling the gaseous reactants and liquid reactants to be sprayed more uniformly and increasing the reaction efficiency of the solid raw materials inside the synthesis tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of a synthesis device for high-purity hafnium diboride powder proposed by the present utility model;

[0016] Figure 2 is Figure 1 a vertical sectional structural diagram of

[0017] Figure 3 is a schematic side view structural diagram of a synthesis device for high-purity hafnium diboride powder proposed by the present utility model;

[0018] Figure 4 is Figure 2 an enlarged schematic diagram of the structure at A in

[0019] Figure 5 is Figure 2Schematic enlarged view of the structure at position B in

[0020] Figure 6 is Figure 2 Schematic enlarged view of the structure at position C in

[0021] In the figure: 1 synthesis tank, 2 fixed frame, 3 support legs, 4 support plate, 5 cylinder, 6 connecting plate, 7 cover plate, 8 intake pipe, 9 liquid inlet pipe, 10 spray pipe, 11 gasket, 12 moving frame, 13 reciprocating lead screw, 14 motor, 15 limiting rod, 16 lead screw sleeve, 17 connecting block, 18 stirring shaft, 19 mounting sleeve, 20 stirring blades, 21 gear, 22 toothed plate, 23 discharge pipe. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] Referring to Figures 1-6 , a synthesis device for high-purity hafnium diboride powder, comprising a synthesis tank 1, a fixed frame 2 is fixedly installed on the outer wall of the synthesis tank 1, multiple support legs 3 are fixedly installed on the outer wall of the fixed frame 2, a support plate 4 is fixedly installed on the outer wall of the synthesis tank 1, the upper end surface of the support plate 4 is fixedly connected with a connecting plate 6 through a lifting mechanism, the lifting mechanism includes a cylinder 5 fixedly installed on the upper end surface of the support plate 4, the telescopic end of the cylinder 5 is fixedly connected with the bottom wall of the connecting plate 6, a cover plate 7 is fixedly installed at the end of the connecting plate 6, an intake pipe 8 and a liquid inlet pipe 9 are fixedly installed on the upper end surface of the cover plate 7, and a spray pipe 10 is fixedly connected to the outer walls of the intake pipe 8 and the liquid inlet pipe 9.

[0024] A plurality of spray holes communicating with the inside are opened on the outer wall of the spray pipe 10, a gasket 11 is fixedly installed on the bottom wall of the cover plate 7, the gasket 11 is made of vulcanized rubber, vulcanized rubber refers to rubber that has been vulcanized, has characteristics such as not being sticky, not being easily broken, etc., and also has high elasticity, heat resistance, tensile strength and insolubility in organic solvents, etc. The bottom wall of the cover plate 7 is rotatably installed with a reciprocating lead screw 13 through a moving frame 12, a motor 14 connected to the reciprocating lead screw 13 is fixedly installed on the upper end surface of the cover plate 7, and a lead screw sleeve 16 is threadedly installed on the outer wall of the reciprocating lead screw 13 through a limiting mechanism. The limiting mechanism includes a limiting rod 15 fixedly installed inside the moving frame 12, the limiting rod 15 slidably penetrates through the lead screw sleeve 16, and the limiting rod 15 can play a limiting role on the lead screw sleeve 16, so that the lead screw sleeve 16 can only axially move along the outer wall of the reciprocating lead screw 13. Stirring shafts 18 are rotatably installed on both outer walls of the lead screw sleeve 16 through a connecting mechanism. The connecting mechanism includes a connecting block 17 fixedly installed on the outer wall of the lead screw sleeve 16, and the stirring shaft 18 is rotatably installed on the outer wall of the connecting block 17.

[0025] On the outer walls of both stirring shafts 18, a plurality of stirring blades 20 are fixedly installed through installation mechanisms. The installation mechanisms include installation sleeves 19 fixedly installed on the outer walls of the stirring shafts 18, and each stirring blade 20 is fixedly installed on the outer wall of the installation sleeve 19. Gears 21 are fixedly installed on the outer walls of both stirring shafts 18, and toothed plates 22 engaged with the gears 21 on the same side are fixedly installed on both inner walls of the synthesis tank 1. A discharge pipe 23 communicating with the inside is fixedly installed on the outer bottom wall of the synthesis tank 1.

[0026] When the utility model is in use, the synthesis tank 1 can be stably supported through the cooperation of the fixing frame 2 and multiple support legs 3. When synthesizing hafnium diboride, solid raw materials can be poured into the synthesis tank 1. Subsequently, the air cylinder 5 can drive the cover plate 7 to descend through the cooperation of the connecting plate 6, so that the cover plate 7 covers the upper end surface of the synthesis tank 1. The cover plate 7 can also squeeze the sealing gasket 11, thereby increasing the sealing performance between the upper end surface of the synthesis tank 1 and the bottom wall of the cover plate 7. During the synthesis, the gas inlet pipe 8 and the liquid inlet pipe 9 can respectively transport gaseous reactants and liquid reactants into the spray pipe 10. The gaseous reactants and liquid reactants then spray out from the spray pipe 10 through a plurality of spray holes, so that the gaseous reactants and liquid reactants can be sprayed more evenly, increasing the reaction efficiency of the solid raw materials inside the synthesis tank 1;

[0027] Meanwhile, the motor 14 drives the reciprocating lead screw 13 to rotate. The reciprocating lead screw 13 drives the lead screw sleeve 16 to move through the cooperation with the limiting rod 15. The lead screw sleeve 16 can drive the stirring shaft 18 to move up and down through the cooperation of the connecting block 17. During the up and down movement of the stirring shaft 18, the gear 21 can be engaged with the toothed plate 22. Under the engagement of the gear 21 and the toothed plate 22, the stirring shaft 18 can rotate on the outer wall of the connecting block 17. Thus, when the lead screw sleeve 16 drives the stirring shaft 18 to move up and down, the stirring shaft 18 can drive a plurality of stirring blades 20 to rotate through the cooperation of the installation sleeve 19, so as to turn and stir the solid raw materials at different levels inside the synthesis tank 1, enabling them to be mixed more evenly with the gaseous reactants and liquid reactants, thereby improving the purity of the synthesized hafnium diboride. The synthesized high-purity hafnium diboride powder can be discharged from the synthesis tank 1 through the discharge pipe 23.

[0028] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the utility model, according to the technical solution of the utility model and its inventive concept, makes equivalent replacements or changes, and should be covered within the protection scope of the utility model.

Claims

1. A synthesis device for high-purity hafnium diboride powder, comprising a synthesis tank (1), characterized in that, A fixed frame (2) is fixedly installed on the outer wall of the synthesis tank (1). Multiple support legs (3) are fixedly installed on the outer wall of the fixed frame (2). A support plate (4) is fixedly installed on the outer wall of the synthesis tank (1). The upper end surface of the support plate (4) is fixedly connected to a connecting plate (6) through a lifting mechanism. The end of the connecting plate (6) is fixedly installed with a cover plate (7). An air inlet pipe (8) and a liquid inlet pipe (9) are fixedly installed on the upper end surface of the cover plate (7). A spray pipe (10) is fixedly connected to the outer walls of the air inlet pipe (8) and the liquid inlet pipe (9). Multiple spray holes communicating with the inside are formed in the outer wall of the spray pipe (10). A reciprocating lead screw (13) is rotatably installed on the bottom wall of the cover plate (7) through a moving frame (12). A motor (14) connected to the reciprocating lead screw (13) is fixedly installed on the upper end surface of the cover plate (7). A lead screw sleeve (16) is threadedly installed on the outer wall of the reciprocating lead screw (13) through a limiting mechanism. Stirring shafts (18) are rotatably installed on the outer walls of both sides of the lead screw sleeve (16) through a connecting mechanism. Multiple stirring blades (20) are fixedly installed on the outer walls of the two stirring shafts (18) through a mounting mechanism. Gears (21) are fixedly installed on the outer walls of the two stirring shafts (18). Tooth plates (22) engaged with the gears (21) on the same side are fixedly installed on the inner walls of both sides of the synthesis tank (1). A discharge pipe (23) communicating with the inside is fixedly installed on the outer bottom wall of the synthesis tank (1).

2. The synthesis device of a high-purity hafnium diboride powder according to claim 1, characterized in that, The lifting mechanism includes a cylinder (5) fixedly installed on the upper end surface of the support plate (4). The telescopic end of the cylinder (5) is fixedly connected to the bottom wall of the connecting plate (6).

3. The synthesis device of a high-purity hafnium diboride powder according to claim 2, characterized in that, The limiting mechanism includes a limiting rod (15) fixedly installed inside the moving frame (12). The limiting rod (15) slidably penetrates through the lead screw sleeve (16).

4. The synthesis device of a high-purity hafnium diboride powder according to claim 3, characterized in that, The connecting mechanism includes a connecting block (17) fixedly installed on the outer wall of the lead screw sleeve (16). The stirring shaft (18) is rotatably installed on the outer wall of the connecting block (17).

5. The synthesis device of a high-purity hafnium diboride powder according to claim 4, characterized in that, The mounting mechanism includes a mounting sleeve (19) fixedly installed on the outer wall of the stirring shaft (18). Each stirring blade (20) is fixedly installed on the outer wall of the mounting sleeve (19).

6. The synthesis device of a high-purity hafnium diboride powder according to claim 5, characterized in that, A sealing gasket (11) is fixedly installed on the bottom wall of the cover plate (7). The sealing gasket (11) is made of vulcanized rubber material.

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