Compound titanium white powder preparation muffle furnace

Abstract

The application discloses a muffle furnace for preparing composite titanium white powder and relates to the technical field of muffle furnaces.The muffle furnace for preparing composite titanium white powder comprises a furnace body and a furnace cover, a furnace cavity is arranged in the furnace body, a placing table is arranged at the bottom of the furnace cavity, and an annular cover is connected to the furnace cavity through a lifting mechanism.The muffle furnace for preparing composite titanium white powder can lift the top of a crucible before heating and calcining, so that powder materials are prevented from escaping;the powder materials can be extruded and laid flat in an annular area between a hollow cover and the crucible, so that the powder materials are prevented from accumulating and the heating area is increased;when the powder materials are heated and calcined, the hot air in the furnace cavity can be circulated, and the powder materials between the hollow cover and the crucible can be reciprocally rolled and pressed, so that the powder materials are prevented from caking;after the powder materials are heated and calcined, the hot air in the furnace cavity can be circulated and heat-exchanged through a heat exchanger, the cooling effect is improved, waste heat is recycled, the muffle furnace is more energy-saving and environment-friendly, and the efficiency and effect of the preparation of the composite titanium white powder can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of muffle furnace, in particular to a muffle furnace for preparing composite titanium dioxide. BACKGROUND

[0002] The titanium dioxide disclosed in application No. 202210571319.4 for nylon chemical fiber mattening and its preparation method is composed of superfine titanium dioxide main component coated with mesoporous silica and amorphous silicon core aluminum-based titanium dioxide auxiliary component, and the mixture is subjected to surface treatment. The amorphous silicon core aluminum-based titanium dioxide is prepared by the following steps: 1) taking mesoporous silica powder, adjusting the slurry concentration to 10-30 wt% with deionized water, and adding hydrochloric acid under stirring to adjust the pH to 1.5-3; slowly adding a measured amount of titanium tetrachloride solution under water bath at 30-40°C and stirring, the amount of titanium tetrachloride solution is 50-150 wt% of the silica powder; after the addition is completed, constant temperature stirring is carried out for 60-90 min, then sodium hydroxide is added to adjust the pH to 9-9.5, and sodium metaaluminate solution is added dropwise under stirring, after the dropwise addition is completed, the reaction is continued for 15-30 min under constant temperature stirring; 2) under stirring, excess carbon dioxide is introduced to make the solution pH<7.5; then aging treatment is carried out at room temperature for 12-24 h, after aging, the solid particles are filtered or centrifuged, washed, dried, ground and dispersed, and placed in a muffle furnace for calcination at 750-800°C for 1-2 h, and after cooling, grinding and depolymerization, sieving is carried out to obtain the amorphous silicon core aluminum-based titanium dioxide.

[0003] When placed in the muffle furnace, the ground and dispersed powder material needs to be loaded into a crucible and placed in the furnace cavity for heating and calcination. During the heating process, the powder accumulates together, the heating area is small, the powder is easy to escape with air flow and is easy to form clumps, thereby affecting the efficiency and effect of heating; after the heating is completed, the cooling efficiency is low, thereby affecting the efficiency and effect of preparing the composite titanium dioxide. SUMMARY

[0004] The present application aims to provide a muffle furnace for preparing composite titanium dioxide to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a muffle furnace for preparing composite titanium dioxide, comprising a furnace body and a furnace cover, a furnace cavity is arranged in the furnace body, and a placement table is arranged at the bottom of the furnace cavity, an annular cover is connected to the furnace cavity through a lifting mechanism, and a circular ring is fixedly connected to the bottom of the annular cover, a hollow cover is arranged in the annular cover through an eccentric mechanism, a conical surface is arranged at the bottom of the hollow cover, a circulating mechanism for circulating air in the furnace cavity is arranged at the top of the furnace body, a stirring mechanism for stirring powder material is arranged at the bottom of the hollow cover, and a vibrating mechanism for vibrating the crucible is arranged at the top of the furnace cavity.

[0006] Preferably, the circulating mechanism comprises a heat exchanger fixedly connected to the top of the furnace body, and an installation cavity is formed above the furnace cavity, the bottom of the installation cavity is fixedly connected with a first electromagnetic valve, the lower end of the first electromagnetic valve penetrates into the furnace cavity and is fixedly connected with a suction pipe, a connecting pipe is fixedly connected between the upper end of the first electromagnetic valve and the inlet of the heat exchanger, the sidewall of the connecting pipe is provided with a second electromagnetic valve, the outlet of the heat exchanger is fixedly connected with a third electromagnetic valve, the top of the hollow cover is fixedly inserted with an air inlet pipe, and the air inlet pipe and the third electromagnetic valve are fixedly connected with a first hose.

[0007] Preferably, the stirring mechanism comprises a through hole formed in the bottom of the hollow cover, and two symmetrical rotating discs are rotatably connected in the through hole, the top and the bottom of each rotating disc are fixedly connected with a limiting ring, a plurality of moving rods are inserted into the bottom of the rotating disc, the upper end of each moving rod penetrates through the top of the rotating disc and is fixedly connected with a counterweight, and the sidewall of each moving rod is fixedly sleeved with a first fixed ring, and the rotation of the rotating disc is driven by the first driving mechanism.

[0008] Preferably, the first driving mechanism comprises a spiral groove formed in the inner sidewall of the hollow cover, and the sidewall of the counterweight is fixedly connected with a first push pin, and the first push pin is inserted into the spiral groove.

[0009] Preferably, the eccentric mechanism comprises a support plate fixedly inserted into the inner sidewall of the hollow cover, the top of the support plate is fixedly connected with a support pipe, the top of the annular cover is fixedly connected with an L-shaped plate, the bottom of the L-shaped plate is rotatably connected with a first rotating shaft through a second driving mechanism, the first rotating shaft is inserted into the support pipe and connected with the inner wall of the support pipe through a reset mechanism, the bottom of the L-shaped plate is fixedly connected with an L-shaped block, the sidewall of the L-shaped block is fixedly connected with a second fixed ring, the second fixed ring is sleeved on the sidewall of the support pipe, a plurality of first tapered blocks arranged in an array are fixedly connected to the inner sidewall of the second fixed ring, and the sidewall of the support pipe is fixedly connected with a second tapered block.

[0010] Preferably, the reset mechanism comprises two symmetrical sleeves fixedly connected to the sidewall of the first rotating shaft, and a sleeve rod is inserted into each sleeve, the other end of the sleeve rod is fixed to the inner wall of the support pipe, and a spring is fixedly connected between the sleeve rod and the sleeve.

[0011] Preferably, the second driving mechanism comprises a driven bevel gear fixedly connected to the top of the first rotating shaft, and a fixed box is fixedly arranged in the side wall of the air inlet pipe, a plurality of baffles are rotatably connected to the fixed box through a second rotating shaft, one end of the second rotating shaft is fixedly connected to one end of a rotating rod, and a driving bevel gear is fixedly arranged on the side wall of the rotating rod and is in meshing arrangement with the driven bevel gear.

[0012] Preferably, the lifting mechanism comprises a guide rod fixedly connected to the top of the mounting cavity, and a guide pipe is sleeved on the side wall of the guide rod, the lower end of the guide pipe penetrates into the furnace cavity and is fixed to the top of the annular cover, a threaded rod is rotatably connected to the top of the mounting cavity, a threaded pipe is threadedly connected to the side wall of the threaded rod, the lower end of the threaded pipe penetrates into the furnace cavity and is fixed to the top of the annular cover, a motor is fixedly connected to the top of the furnace body, and the output end of the motor is fixed to the upper end of the threaded rod.

[0013] Preferably, the vibration mechanism comprises a plurality of U-shaped blocks fixedly connected to the top of the furnace cavity, and a rotating plate is rotatably connected to the side wall of each U-shaped block through a third rotating shaft, a V-shaped plate is fixedly connected to the bottom of each rotating plate, and the rotation of the rotating plate is driven by the pushing mechanism.

[0014] Preferably, the pushing mechanism comprises a pushing block fixedly connected to the side wall of each rotating plate, and an inclined surface is arranged on the side wall of the pushing block, a plurality of triangular blocks are fixedly connected to the side wall of the rotating plate in an array, and a second pushing pin is fixedly connected to the side wall of the annular cover.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] The muffle furnace for preparing composite titanium dioxide is provided with a stirring mechanism, and when the powder material is heated, the powder material is added into the crucible, then the crucible is placed on the placement table, then the furnace cover is closed, then the annular cover and the hollow cover are driven downward by the lifting mechanism, so that the powder material can move along the conical surface to the annular area between the hollow cover and the crucible, at the same time, when the lower end of the moving rod abuts against the powder material, the counterweight block is pushed upward, and the first pushing pin is driven to slide upward along the spiral groove, so that the counterweight block is driven to rotate, and the rotating disc and the moving rod are driven to rotate synchronously, at this time, the powder material in the crucible is stirred, which facilitates the movement of the powder material to the hollow cover and the crucible, when the bottom of the moving rod abuts against the bottom of the crucible, the first fixed ring abuts against the bottom of the rotating disc, so that a gap is formed between the bottom of the hollow cover and the bottom of the crucible, and the top of the hollow cover is sealed by the annular cover, thereby the powder material in the crucible is laid flat, the accumulation of the powder material is avoided, the heating area is increased, and the efficiency and effect of subsequent heating are improved.

[0017] The composite titanium dioxide preparation muffle furnace, through the setting circulating mechanism and the like, after the hollow cover is covered by the annular cover, the first electromagnetic valve is started, the fourth electromagnetic valve is opened, the second electromagnetic valve and the third electromagnetic valve are closed, at this time, the hot air in the furnace cavity can be absorbed through the air suction pipe, then, through the fourth electromagnetic valve, the second hose, the first hose and the air inlet pipe into the hollow cover, then, through the air outlet pipe back to the furnace cavity, so reciprocating, the hot air in the furnace cavity can be circulated, and the powder material between the hollow cover and the crucible can be heated through the hollow cover, the efficiency and effect of heating can be improved, and through the setting of the annular cover, the powder material can be prevented from escaping due to air flow, so that the efficiency and effect of heating are improved, after calcination is completed, the fourth electromagnetic valve is closed, the second electromagnetic valve and the third electromagnetic valve are opened, at this time, the hot air in the furnace cavity can enter the heat exchanger through the connecting pipe to exchange heat, then, through the third electromagnetic valve, the first hose and the air inlet pipe into the hollow cover, and then into the furnace cavity through the air outlet pipe, so reciprocating, the hot air in the furnace cavity can be circulated and exchanged through the heat exchanger, the cooling effect can be improved at the same time, and the waste heat can be recycled, which is more energy-saving and environment-friendly.

[0018] The composite titanium dioxide preparation muffle furnace, through the setting of the eccentric mechanism and the like, when the air enters the fixed box, it can impact on the surface of the baffle, so that the second rotating shaft rotates, when the second rotating shaft rotates, it can drive the driving bevel gear to rotate through the rotating rod, so that the first rotating shaft is driven to rotate through the driven bevel gear, and then the supporting pipe connected with the reset mechanism rotates, and then the hollow cover is driven to rotate through the supporting plate, when the second conical block abuts against the first conical block, the supporting pipe can be pushed to move to the other side, at the same time, the spring is compressed, when the second conical block passes the first conical block, the supporting pipe can be reset under the action of the spring, so reciprocating, the supporting pipe can move eccentrically while rotating, and the hollow cover is driven to move synchronously through the supporting plate, at this time, the powder material between the hollow cover and the crucible can be reciprocally rolled, so that the caking is avoided, and the efficiency and effect of heating are ensured.

[0019] The composite titanium dioxide preparation muffle furnace, through the setting of the vibration mechanism and the like, when the hollow cover moves downward along the crucible, the second push pin can slide along the side wall of the push block to the inclined surface, at this time, the rotating plate rotates downward along the third rotating shaft under the action of gravity, and the V-shaped plate contacts with the side wall of the crucible, at this time, the rotating plate is in a vertical downward state, then, when the hollow cover continues to move downward, the second push pin can slide downward along the side wall of the triangular block, so that the rotating plate can be pushed to rotate upward along the third rotating shaft, when the second push pin passes the triangular block, the rotating plate rotates downward to reset, so reciprocating, the V-shaped plate can reciprocally knock and vibrate the side wall of the crucible, so that the powder material can move between the hollow cover and the crucible. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0021] Figure 2 It is a schematic diagram of the internal structure of the furnace body in the present application.

[0022] Figure 3 It is a schematic diagram of the internal structure of the furnace body in another perspective in the present application.

[0023] Figure 4 It is a schematic diagram of the overall structure of the hollow cover in the present application.

[0024] Figure 5 It is a schematic diagram of the overall structure of the hollow cover in another perspective in the present application.

[0025] Figure 6 It is a schematic diagram of the sectional structure of the hollow cover in the present application.

[0026] Figure 7 It is a schematic diagram of the enlarged structure at A in the present application. Figure 1

[0027] It is a schematic diagram of the enlarged structure at B in the present application. Figure 8 Figure 2 It is a schematic diagram of the enlarged structure at C in the present application.

[0028] Figure 9 Figure 2 It is a schematic diagram of the enlarged structure at D in the present application.

[0029] Figure 10 It is a schematic diagram of the enlarged structure at E in the present application. Figure 3

[0030] It is a schematic diagram of the enlarged structure at F in the present application. Figure 11 Figure 5 It is a schematic diagram of the enlarged structure at G in the present application.

[0031] Figure 12 Figure 6 It is a schematic diagram of the enlarged structure at H in the present application.

[0032] Figure 13 It is a schematic diagram of the enlarged structure at H in the present application. Figure 6

[0033] It is a schematic diagram of the enlarged structure at H in the present application. Figure 14 Figure 12 It is a schematic diagram of the enlarged structure at H in the present application.

[0034] ​​​​​In the figure: 101, furnace body; 102, furnace cover; 103, furnace cavity; 104, placing table; 201, installation cavity; 202, first electromagnetic valve; 203, air exhaust pipe; 204, heat exchanger; 205, second electromagnetic valve; 206, connecting pipe; 207, third electromagnetic valve; 208, first hose; 209, air inlet pipe; 210, air outlet pipe; 211, fourth electromagnetic valve; 212, second hose; 301, support plate; 302, support pipe; 303, L-shaped plate; 304, first rotating shaft; 305, second conical block; 306, first conical block; 307, L-shaped block; 308, second fixed ring; 401, driven bevel gear; 402, fixed box; 403, rotating rod; 404, driving bevel gear; 405, second rotating shaft; 406, baffle; 501, sleeve pipe; 502, sleeve rod; 503, spring; 601, through hole; 602, rotating disc; 603, limiting ring; 604, moving rod; 605, first fixed ring; 606, counterweight; 701, first pushing pin; 702, helical groove; 801, U-shaped block; 802, third rotating shaft; 803, rotating plate; 804, V-shaped plate; 901, pushing block; 902, inclined surface; 903, second pushing pin; 904, triangular block; 1001, guide pipe; 1002, guide rod; 1003, threaded pipe; 1004, threaded rod; 1005, motor; 11, annular cover; 12, circular ring; 13, hollow cover; 1301, conical surface; 14, crucible. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0036] Please refer to Figures 1-14The application provides a muffle furnace for preparing composite titanium dioxide, which comprises a furnace body 101 and a furnace cover 102, the furnace body 101 is internally provided with a furnace cavity 103, the bottom of the furnace cavity 103 is provided with a placing table 104, the furnace cavity 103 is internally connected with an annular cover 11 through a lifting mechanism, the bottom of the annular cover 11 is fixedly connected with a circular ring 12, the annular cover 11 is connected with a hollow cover 13 arranged in an annular shape through an eccentric mechanism below the annular cover 11, the bottom of the hollow cover 13 is provided with a conical surface 1301, the top of the furnace body 101 is provided with a circulating mechanism for circulating air in the furnace cavity 103, the bottom of the hollow cover 13 is provided with a stirring mechanism for stirring powder materials, and the top of the furnace cavity 103 is provided with a vibrating mechanism for vibrating a crucible 14, before heating and calcining, the top of the crucible 14 can be covered, so that the powder materials can be prevented from escaping due to air flow; the powder materials in the crucible 14 can be extruded and laid flat to an annular area between the hollow cover 13 and the crucible 14, so that accumulation is avoided and the heating area is increased, the efficiency and effect of subsequent heating can be improved, the hollow cover 13 and the like are made of a high-temperature-resistant heat-conducting material; during heating and calcining, the hot air in the furnace cavity 103 can be circulated, at the same time, the powder materials between the hollow cover 13 and the crucible 14 can be reciprocatingly rolled, so that caking is avoided and the efficiency and effect of heating are ensured; after heating and calcining, the hot air in the furnace cavity 103 can be circulated and heat-exchanged through a heat exchanger 204, the cooling effect can be improved, at the same time, waste heat is recycled, the application is more energy-saving and environment-friendly, and the efficiency and effect of preparing the composite titanium dioxide can be improved.

[0037] The circulating mechanism comprises a heat exchanger 204 fixedly connected to the top of the furnace body 101, and an installation cavity 201 is formed above the furnace cavity 103, the bottom of the installation cavity 201 is fixedly connected with a first electromagnetic valve 202, the lower end of the first electromagnetic valve 202 penetrates into the furnace cavity 103 and is fixedly connected with a suction pipe 203, a connecting pipe 206 is fixedly connected between the upper end of the first electromagnetic valve 202 and the inlet of the heat exchanger 204, a second electromagnetic valve 205 is arranged on the side wall of the connecting pipe 206, the outlet of the heat exchanger 204 is fixedly connected with a third electromagnetic valve 207, the top of the hollow cover 13 is fixedly inserted with an air inlet pipe 209, the air inlet pipe 209 and the third electromagnetic valve 207 are fixedly connected with a first hose 208, a fourth electromagnetic valve 211 is fixedly connected to the side wall of the connecting pipe 206, the fourth electromagnetic valve 211 and the first hose 208 are fixedly connected with a second hose 212, the top of the hollow cover 13 is fixedly inserted with an air outlet pipe 210, the upper end of the air outlet pipe 210 penetrates through the top of the annular cover 11, after the annular cover 11 covers the hollow cover 13, the first electromagnetic valve 202 is started, the fourth electromagnetic valve 211 is opened, and the second electromagnetic valve 205 and the third electromagnetic valve 207 are closed, at this time, the hot air in the furnace cavity 103 can be absorbed through the suction pipe 203, then enters the hollow cover 13 through the fourth electromagnetic valve 211, the second hose 212, the first hose 208 and the air inlet pipe 209, then returns to the furnace cavity 103 through the air outlet pipe 210, and thus reciprocates, so that the hot air in the furnace cavity 103 is circulated, and the powder material between the hollow cover 13 and the crucible 14 can be heated and treated through the hollow cover 13, the efficiency and effect of heating can be improved, and through the arrangement of the annular cover 11, the powder material can be prevented from escaping due to air flow, so that the efficiency and effect of heating are improved, after calcination is completed, the fourth electromagnetic valve 211 is closed, and the second electromagnetic valve 205 and the third electromagnetic valve 207 are opened, at this time, the hot air in the furnace cavity 103 can enter the heat exchanger 204 through the connecting pipe 206 to exchange heat, then enters the hollow cover 13 through the third electromagnetic valve 207, the first hose 208 and the air inlet pipe 209, and then enters the furnace cavity 103 through the air outlet pipe 210, and thus reciprocates, so that the hot air in the furnace cavity 103 is circulated and exchanged through the heat exchanger 204, the cooling effect is improved, the waste heat is recycled, and the energy saving and environmental protection are improved, and the components of the circulating mechanism are made of high-temperature resistant materials.

[0038] The stirring mechanism is provided with a through hole 601 in the bottom of the hollow cover 13, and two symmetrical rotating discs 602 are rotationally connected in the through hole 601, the top and bottom of each rotating disc 602 are fixedly connected with a limiting ring 603, a plurality of moving rods 604 are inserted into the bottom of the rotating disc 602, the upper end of the moving rod 604 penetrates through the top of the rotating disc 602 and is fixedly connected with a counterweight 606, and the side wall of each moving rod 604 is fixedly sleeved with a first fixed ring 605. The components of the stirring mechanism are made of high-temperature-resistant and heat-conducting materials. The rotation of the rotating disc 602 is driven by the first driving mechanism. When the powder material is heated, the powder material is added into the crucible 14, then the crucible 14 is placed on the placement table 104, then the furnace cover 102 is closed, then the annular cover 11 and the hollow cover 13 are driven downward by the lifting mechanism, so that the powder material can move to the annular area between the hollow cover 13 and the crucible 14 along the conical surface 1301. At the same time, the counterweight 606 is driven to rotate by the first driving mechanism. When the counterweight 606 rotates, it can drive the rotating disc 602 and the moving rod 604 to rotate synchronously. At this time, the powder material in the crucible 14 can be stirred to move to the hollow cover 13 and the crucible 14. When the bottom of the moving rod 604 abuts against the bottom of the crucible 14, the first fixed ring 605 can abut against the bottom of the rotating disc 602, so as to ensure that there is a gap between the bottom of the hollow cover 13 and the bottom of the crucible 14. The rotating disc 602 is made of high-temperature-resistant and heat-conducting materials.

[0039] The first driving mechanism includes a spiral groove 702 formed in the inner side wall of the hollow cover 13, and the side wall of the counterweight 606 is fixedly connected with a first pushing pin 701, and the first pushing pin 701 is inserted into the spiral groove 702. When the lower end of the moving rod 604 abuts against the powder material, the counterweight 606 can be pushed upward, and at the same time, the first pushing pin 701 can slide upward along the spiral groove 702, so as to drive the counterweight 606 to rotate.

[0040] The eccentric mechanism comprises a support plate 301 fixedly inserted in the inner side wall of the hollow cover 13, the top of the support plate 301 is fixedly connected with a support pipe 302, the top of the annular cover 11 is fixedly connected with an L-shaped plate 303, the bottom of the L-shaped plate 303 is rotatably connected with a first rotating shaft 304 through a second driving mechanism, the first rotating shaft 304 is inserted in the support pipe 302 and connected with the inner wall of the support pipe 302 through a reset mechanism, the bottom of the L-shaped plate 303 is fixedly connected with an L-shaped block 307, the side wall of the L-shaped block 307 is fixedly connected with a second fixed ring 308, the second fixed ring 308 is sleeved on the side wall of the support pipe 302, a plurality of first tapered blocks 306 are fixedly connected on the inner side wall of the second fixed ring 308 in an array, the side wall of the support pipe 302 is fixedly connected with a second tapered block 305, the first rotating shaft 304 is driven to rotate through the second driving mechanism, the support pipe 302 is driven to rotate through the reset mechanism, and then the hollow cover 13 is driven to rotate through the support plate 301, when the second tapered block 305 abuts against the first tapered block 306, the support pipe 302 can be pushed to move to the other side, at the same time, the spring 503 is compressed, when the second tapered block 305 passes the first tapered block 306, the support pipe 302 can be reset under the action of the spring 503, so that the support pipe 302 is eccentrically moved while rotating, and the hollow cover 13 is synchronously moved through the support plate 301, at this time, the powder material between the hollow cover 13 and the crucible 14 can be reciprocally rolled and pressed, the caking can be avoided, and the efficiency and effect of heating can be ensured, and the components of the eccentric mechanism are made of high-temperature-resistant materials.

[0041] The reset mechanism comprises two symmetrically arranged sleeve pipes 501 fixedly connected on the side wall of the first rotating shaft 304, a sleeve rod 502 is inserted in each sleeve pipe 501, the other end of the sleeve rod 502 is fixedly connected with the inner wall of the support pipe 302, and the spring 503 is fixedly connected between the sleeve rod 502 and the sleeve pipe 501, so as to guide and reset the movement of the support pipe 302 and the hollow cover 13, the components of the reset mechanism are made of high-temperature-resistant materials, and heat insulation paint can be arranged on the surface of the sleeve pipe 501 and the sleeve rod 502 to avoid affecting the spring 503.

[0042] The second driving mechanism comprises a driven bevel gear 401 fixedly connected to the top of the first rotating shaft 304, and a fixed box 402 fixedly arranged in the side wall of the air inlet pipe 209, a plurality of baffles 406 are rotatably connected in the fixed box 402 through a second rotating shaft 405, one end of the second rotating shaft 405 is fixed to one end of a rotating rod 403, the rotating rod 403 is fixedly sleeved with a driving bevel gear 404, and the driving bevel gear 404 is meshed with the driven bevel gear 401, when the hot air is circulated, when the air enters the fixed box 402, the surface of the baffle 406 can be impacted, so that the second rotating shaft 405 rotates, when the second rotating shaft 405 rotates, the driving bevel gear 404 can be driven to rotate through the rotating rod 403, so that the first rotating shaft 304 is driven to rotate through the driven bevel gear 401.

[0043] The lifting mechanism comprises a guide rod 1002 fixedly connected to the top of the mounting cavity 201, and the side wall of the guide rod 1002 is sleeved with a guide pipe 1001, the lower end of the guide pipe 1001 penetrates into the furnace cavity 103 and is fixed to the top of the annular cover 11, and the top of the mounting cavity 201 is rotatably connected with a threaded rod 1004, the side wall of the threaded rod 1004 is threadedly connected with a threaded pipe 1003, and the lower end of the threaded pipe 1003 penetrates into the furnace cavity 103 and is fixed to the top of the annular cover 11, the top of the furnace body 101 is fixedly connected with a motor 1005, and the output end of the motor 1005 is fixed to the upper end of the threaded rod 1004, the motor 1005 is started, the rotation of the motor 1005 drives the rotation of the threaded rod 1004, so that the hollow cover 13 can be lifted, and the threaded pipe 1003 and the guide pipe 1001 are made of high-temperature-resistant material.

[0044] The vibration mechanism comprises a plurality of U-shaped blocks 801 fixedly connected to the top of the furnace cavity 103, and each U-shaped block 801 is rotatably connected with a rotating plate 803 through a third rotating shaft 802, the bottom of each rotating plate 803 is fixedly connected with a V-shaped plate 804, and the rotation of the rotating plate 803 is pushed by the pushing mechanism, when the hollow cover 13 moves downward along the crucible 14, the rotating plate 803 is reciprocatingly rotated by the pushing mechanism, so that the V-shaped plate 804 reciprocatingly knocks and vibrates the side wall of the crucible 14, which facilitates the movement of the powder material between the hollow cover 13 and the crucible 14, and the components of the vibration mechanism are made of high-temperature-resistant material.

[0045] The pushing mechanism comprises pushing blocks 901 fixedly connected to the side walls of the rotating plates 803, the side walls of the pushing blocks 901 are provided with inclined surfaces 902, the side walls of the rotating plates 803 are fixedly connected with a plurality of arrayed triangular blocks 904, and the side wall of the annular cover 11 is fixedly connected with a second pushing pin 903, when the hollow cover 13 moves downward along the crucible 14, the second pushing pin 903 can slide along the side wall of the pushing block 901 to the inclined surface 902, at this time, the rotating plate 803 rotates downward along the third rotating shaft 802 under the action of gravity, and the V-shaped plate 804 is in contact with the side wall of the crucible 14, at this time, the rotating plate 803 is in a vertically downward state, then, when the hollow cover 13 continues to move downward, the second pushing pin 903 can slide downward along the side wall of the triangular block 904, so as to push the rotating plate 803 to rotate upward along the third rotating shaft 802, when the second pushing pin 903 passes through the triangular block 904, the rotating plate 803 rotates downward to reset, so as to reciprocate the V-shaped plate 804 to knock and vibrate the side wall of the crucible 14.

[0046] Working principle: in use, when the powder material is heated, the powder material is added into the crucible 14, then the crucible 14 is placed on the placing table 104, then the furnace cover 102 is closed, then the annular cover 11 and the hollow cover 13 are driven downward by the lifting mechanism, so that the powder material can move along the conical surface 1301 to the annular area between the hollow cover 13 and the crucible 14, at the same time, when the lower end of the moving rod 604 abuts against the powder material, the counterweight block 606 can be pushed to move upward, at the same time, the first pushing pin 701 can slide upward along the spiral groove 702, so as to drive the counterweight block 606 to rotate, when the counterweight block 606 rotates, the rotating disc 602 and the moving rod 604 can be driven to rotate synchronously, at this time, the powder material in the crucible 14 can be stirred to facilitate the movement to the hollow cover 13 and the crucible 14, when the bottom of the moving rod 604 abuts against the bottom of the crucible 14, the first fixed ring 605 can abut against the bottom of the rotating disc 602, so as to ensure that there is a gap between the bottom of the hollow cover 13 and the bottom of the crucible 14, and the annular cover 11 seals the top of the hollow cover 13, so as to flatten the powder material in the crucible 14, avoid accumulation, increase the heating area, and improve the efficiency and effect of subsequent heating.

[0047] At the same time, when the hollow cover 13 moves downward along the crucible 14, the second pushing pin 903 can slide along the side wall of the pushing block 901 to the inclined surface 902, at this time, the rotating plate 803 rotates downward along the third rotating shaft 802 under the action of gravity, and the V-shaped plate 804 is in contact with the side wall of the crucible 14, at this time, the rotating plate 803 is in a vertically downward state, then, when the hollow cover 13 continues to move downward, the second pushing pin 903 can slide downward along the side wall of the triangular block 904, so as to push the rotating plate 803 to rotate upward along the third rotating shaft 802, when the second pushing pin 903 passes through the triangular block 904, the rotating plate 803 rotates downward to reset, so as to reciprocate, so that the V-shaped plate 804 reciprocates and knocks the side wall of the crucible 14, facilitating the movement of the powder material between the hollow cover 13 and the crucible 14.

[0048] After the annular cover 11 covers the hollow cover 13, the first electromagnetic valve 202 is started, the fourth electromagnetic valve 211 is opened, and the second electromagnetic valve 205 and the third electromagnetic valve 207 are closed, at this time, the hot air in the furnace cavity 103 can be absorbed through the air suction pipe 203, then enters the hollow cover 13 through the fourth electromagnetic valve 211, the second hose 212, the first hose 208, the air inlet pipe 209, and then returns to the furnace cavity 103 through the air outlet pipe 210, so as to circulate the hot air in the furnace cavity 103, and the powder material between the hollow cover 13 and the crucible 14 can be heated through the hollow cover 13, which can improve the efficiency and effect of heating, and the setting of the annular cover 11 can avoid the dispersion of the powder material due to air flow, thereby improving the efficiency and effect of heating.

[0049] When the hot air is circulated, when the air enters the fixed box 402, it can impact the surface of the baffle 406, so that the second rotating shaft 405 rotates, when the second rotating shaft 405 rotates, the driving bevel gear 404 can be driven to rotate through the rotating rod 403, so that the first rotating shaft 304 is driven to rotate through the driven bevel gear 401, and then the support pipe 302 connected through the reset mechanism is driven to rotate, and then the hollow cover 13 is driven to rotate through the support plate 301, when the second conical block 305 abuts against the first conical block 306, the support pipe 302 can be pushed to move to the other side, and at the same time, the spring 503 is compressed, when the second conical block 305 passes through the first conical block 306, the support pipe 302 can move to reset under the action of the spring 503, so as to reciprocate, so that the support pipe 302 rotates and eccentrically moves at the same time, and the hollow cover 13 is driven to move synchronously through the support plate 301, at this time, the powder material between the hollow cover 13 and the crucible 14 can be reciprocally rolled, which can avoid caking and ensure the efficiency and effect of heating.

[0050] After calcination is completed, the fourth electromagnetic valve 211 is closed, and the second electromagnetic valve 205 and the third electromagnetic valve 207 are opened. At this time, the hot air in the furnace cavity 103 can enter the heat exchanger 204 through the connecting pipe 206 to exchange heat. Then, the hot air enters the hollow cover 13 through the third electromagnetic valve 207, the first hose 208, and the air inlet pipe 209, and then enters the furnace cavity 103 through the air outlet pipe 210. In this way, the hot air in the furnace cavity 103 is circulated and exchanges heat through the heat exchanger 204, which can improve the cooling effect and recycle waste heat, thereby being more energy-saving and environmentally friendly.

Claims

1. A muffle furnace for preparing composite titanium white powder, comprising a furnace body (101) and a furnace cover (102), a furnace cavity (103) is arranged in the furnace body (101), and a placing table (104) is arranged at the bottom of the furnace cavity (103), characterized in that: The annular cover (11) is connected in the furnace cavity (103) through a lifting mechanism, the bottom of the annular cover (11) is fixedly connected with a circular ring (12), the bottom of the hollow cover (13) is provided with a conical surface (1301), the top of the furnace body (101) is provided with a circulating mechanism for circulating air in the furnace cavity (103), the bottom of the hollow cover (13) is provided with a stirring mechanism for stirring powder materials, and the top of the furnace cavity (103) is provided with a vibrating mechanism for vibrating the crucible (14); The circulating mechanism comprises a heat exchanger (204) fixedly connected to the top of the furnace body (101), and a mounting cavity (201) is formed in the upper portion of the furnace cavity (103), the bottom of the mounting cavity (201) is fixedly connected with a first electromagnetic valve (202), the lower end of the first electromagnetic valve (202) penetrates into the furnace cavity (103) and is fixedly connected with a suction pipe (203), the upper end of the first electromagnetic valve (202) and the inlet of the heat exchanger (204) are fixedly connected with a connecting pipe (206), the side wall of the connecting pipe (206) is provided with a second electromagnetic valve (205), the outlet of the heat exchanger (204) is fixedly connected with a third electromagnetic valve (207), the top of the hollow cover (13) is fixedly inserted with an air inlet pipe (209), the air inlet pipe (209) and the third electromagnetic valve (207) are fixedly connected with a first hose (208), the side wall of the connecting pipe (206) is fixedly connected with a fourth electromagnetic valve (211), the fourth electromagnetic valve (211) and the first hose (208) are fixedly connected with a second hose (212), and the top of the hollow cover (13) is fixedly inserted with an air outlet pipe (210), the upper end of the air outlet pipe (210) penetrates through the top of the annular cover (11); The stirring mechanism comprises a through hole (601) formed in the bottom of the hollow cover (13), and two symmetrical rotating discs (602) are rotatably connected in the through hole (601), the bottom of the rotating disc (602) is inserted with a plurality of moving rods (604); The top and bottom of each rotating disc (602) are fixedly connected with a limiting ring (603), the upper end of the moving rod (604) penetrates through the top of the rotating disc (602) and is fixedly connected with a counterweight (606), and the side wall of each moving rod (604) is fixedly sleeved with a first fixed ring (605), and the rotation of the rotating disc (602) is driven by the first driving mechanism. The eccentric mechanism comprises a support plate (301) fixedly inserted into the inner side wall of the hollow cover (13), and the top of the support plate (301) is fixedly connected with a support pipe (302), the top of the annular cover (11) is fixedly connected with an L-shaped plate (303), the bottom of the L-shaped plate (303) is rotatably connected with a first rotating shaft (304) through a second driving mechanism, the first rotating shaft (304) is inserted into the support pipe (302) and connected with the inner wall of the support pipe (302) through a reset mechanism, the bottom of the L-shaped plate (303) is fixedly connected with an L-shaped block (307), the side wall of the L-shaped block (307) is fixedly connected with a second fixed ring (308), the second fixed ring (308) is sleeved on the side wall of the support pipe (302), the inner side wall of the second fixed ring (308) is fixedly connected with a plurality of first tapered blocks (306) arranged in an array, and the side wall of the support pipe (302) is fixedly connected with a second tapered block (305).

2. A muffle furnace for the preparation of a composite titanium dioxide according to claim 1, characterized in that: The first driving mechanism comprises a spiral groove (702) formed in the inner side wall of the hollow cover (13), and the side wall of the counterweight block (606) is fixedly connected with a first push pin (701) which is inserted into the spiral groove (702).

3. The muffle furnace for preparing a composite titanium white powder according to claim 1, characterized in that: The reset mechanism comprises two symmetrically arranged sleeve pipes (501) fixedly connected to the side wall of the first rotating shaft (304), and a sleeve rod (502) is inserted into each sleeve pipe (501), one end of the sleeve rod (502) is fixed to the inner wall of the support pipe (302), and a spring (503) is fixedly connected between the sleeve rod (502) and the sleeve pipe (501).

4. The muffle furnace for preparing a composite titanium white powder according to claim 1, characterized in that: The second driving mechanism comprises a driven bevel gear (401) fixedly connected to the top of the first rotating shaft (304), and a fixed box (402) is fixedly inserted into the side wall of the air inlet pipe (209), a plurality of baffles (406) are rotatably connected to the fixed box (402) through a second rotating shaft (405), one end of the second rotating shaft (405) is fixed to one end of a rotating rod (403), the side wall of the rotating rod (403) is fixedly sleeved with a driving bevel gear (404), and the driving bevel gear (404) is meshingly arranged with the driven bevel gear (401).

5. The muffle furnace for preparing a composite titanium white powder according to claim 1, characterized in that: The lifting mechanism comprises a guide rod (1002) fixedly connected to the top of the mounting cavity (201), and the side wall of the guide rod (1002) is sleeved with a guide pipe (1001), the lower end of the guide pipe (1001) penetrates into the furnace cavity (103) and is fixed to the top of the annular cover (11), the top of the mounting cavity (201) is rotatably connected with a threaded rod (1004), the side wall of the threaded rod (1004) is threadedly connected with a threaded pipe (1003), the lower end of the threaded pipe (1003) penetrates into the furnace cavity (103) and is fixed to the top of the annular cover (11), the top of the furnace body (101) is fixedly connected with a motor (1005), and the output end of the motor (1005) is fixed to the upper end of the threaded rod (1004).

6. The muffle furnace for preparing a composite titanium white powder according to claim 1, characterized in that: The vibration mechanism comprises a plurality of U-shaped blocks (801) fixedly connected to the top of the furnace cavity (103), and the side wall of each U-shaped block (801) is rotationally connected with a rotating plate (803) through a third rotating shaft (802), the bottom of each rotating plate (803) is fixedly connected with a V-shaped plate (804), and the rotation of the rotating plate (803) is driven by a pushing mechanism.

7. A muffle furnace for the preparation of a composite titanium dioxide according to claim 6, characterized in that: The pushing mechanism comprises a pushing block (901) fixedly connected to the side wall of each rotating plate (803), and the side wall of the pushing block (901) is provided with an inclined surface (902), the side wall of the rotating plate (803) is fixedly connected with a plurality of arrayed triangular blocks (904), and the side wall of the annular cover (11) is fixedly connected with a second pushing pin (903).

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