A device for utilizing waste heat from processing high-temperature aluminum nitride workpieces

Abstract

The present invention discloses a waste heat utilization device for processing aluminum nitride high-temperature workpieces, and belongs to the technical field of aluminum nitride ceramic production. A waste heat utilization device for processing aluminum nitride high-temperature workpieces, including a waste heat utilization box and a furnace body, wherein the waste heat utilization box is composed of a loading chamber, a transfer chamber, a waste heat utilization cavity, a loading and unloading chamber, a heat dissipation chamber and a discharge chamber from the aluminum nitride ceramic entry end to the aluminum nitride ceramic discharge end, and also includes: a furnace body, which is arranged on the top of the waste heat utilization box, and the bottom of the furnace body is connected with the loading and unloading chambers; the present invention realizes gradual preheating and gradual cooling through the design of multi-stage waste heat utilization chambers and heat dissipation chambers, thereby improving the sintering efficiency. At the same time, when replacing the workpiece inside the furnace body, it can be replaced without waiting for the temperature to drop, and hot gas reflux can be used after the replacement, so that it can be further quickly heated after preheating, achieving the waste heat utilization effect, and further improving the work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum nitride ceramic production, and in particular to a device for utilizing waste heat from processing aluminum nitride high-temperature workpieces. Background Art

[0002] As a high-performance ceramic material, aluminum nitride has good thermal stability and thermal conductivity at high temperatures. Therefore, the waste heat generated by its high-temperature workpieces has a high utilization value. Specifically, it refers to the recovery and utilization of high-temperature waste heat generated during the production or processing process, and converting it into useful thermal energy or electrical energy. This utilization method aims to improve energy utilization efficiency and reduce energy waste and environmental pollution.

[0003] At present, the compressed aluminum nitride ceramics are generally sintered. After the sintering is completed, it is necessary to wait for the temperature to drop completely before the parts can be taken out and replaced, and then gradually heated from a low temperature to the sintering temperature again. Therefore, when the furnace is used for sintering, the cooling and heating of the tank body takes a lot of time, which greatly reduces the sintering efficiency. At the same time, a large amount of waste heat cannot be recycled, which will cause great waste. For this reason, a waste heat utilization device for processing aluminum nitride high-temperature workpieces is proposed. Summary of the invention

[0004] The present invention aims to solve the problem of low furnace sintering efficiency in the prior art and proposes a device for utilizing waste heat from processing high-temperature aluminum nitride workpieces.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A device for utilizing waste heat from processing high-temperature aluminum nitride workpieces comprises a waste heat utilization box and a furnace body, wherein the waste heat utilization box is composed of a loading chamber, a transfer chamber, a waste heat utilization chamber, an upper and lower feeding chamber, a heat dissipation chamber and a discharge chamber from the aluminum nitride ceramic entry end to the aluminum nitride ceramic discharge end, and further comprises: a furnace body, which is arranged on the top of the waste heat utilization box, and the bottom of the furnace body is connected with the upper and lower feeding chambers; the waste heat utilization chamber is divided into a multi-stage waste heat utilization chamber by a plurality of groups of sealing components, and the temperature of the multi-stage waste heat utilization chamber decreases in sequence from one end close to the upper and lower feeding chambers to the feeding end of the waste heat utilization box; a heat dissipation fan is arranged at the discharge end of the waste heat utilization box, and blows cooling gas from the discharge end of the waste heat utilization box to the feeding end of the waste heat utilization box; two groups of material inlet sealing parts are arranged, which are respectively arranged at the two ends of the waste heat utilization box; a sealing component is arranged in the sintering upper and lower feeding chambers, and when the sealing component rises, the aluminum nitride ceramic workpiece is sent into the furnace body and the furnace body is sealed.

[0007] As a preferred embodiment of the present invention: the furnace body includes an insulating tank body fixedly installed on the top of the waste heat utilization box body, an electric heater is fixedly installed in the insulating tank body, and a vacuum pipe and an air intake pipe are fixedly installed on the top of the insulating tank body.

[0008] As a preferred embodiment of the present invention: the sealing assembly includes a mounting plate, on which a sealing ring is fixedly mounted, and when the sealing assembly completes rising, the sealing ring is connected to the bottom of the insulating tank body to seal the bottom of the insulating tank body; it also includes a mounting ring fixedly mounted on the top of the mounting plate, on which a mounting disk is rotatably connected, on which a support plate is fixedly mounted, on which a third mounting shaft is rotatably mounted, on which a third transmission roller is fixedly mounted, and both ends of the third mounting shaft are connected to driven wheels via a ratchet mechanism.

[0009] As a preferred embodiment of the present invention: it also includes a driving assembly, which includes a bottom box fixedly installed at the bottom of the waste heat utilization box body, a third motor and a third electric telescopic cylinder are fixedly installed in the bottom box, and the output end of the third electric telescopic cylinder is fixedly connected to the mounting plate; a coupling sleeve is rotatably connected in the bottom box, the output shaft of the third motor and the coupling sleeve rotate synchronously through a gear set, and a spline shaft is slidably connected to the coupling sleeve; the top of the spline shaft is fixedly connected to the mounting plate, and the spline shaft is rotatably connected to the mounting plate through a sealed bearing.

[0010] As a preferred embodiment of the present invention: it also includes multiple groups of first transmission components arranged in the heat dissipation cavity and the waste heat utilization cavity, the first transmission components including: two groups of first installation boxes fixedly installed on both sides of the waste heat utilization box body, a first motor fixedly installed in the first installation box; a first installation shaft rotatably connected to the waste heat utilization box body, a first transmission roller fixedly connected to the first installation shaft; the first installation shaft is fixedly connected to the output end of the first motor, and multiple groups of the first installation shafts extend into the first installation box and are connected through a first synchronous pulley group for transmission.

[0011] As a preferred embodiment of the present invention: it also includes a second transmission component arranged in the transfer chamber, the second transmission component includes: two groups of second installation boxes fixedly installed on both sides of the waste heat utilization box body, a second motor is fixedly installed in the second installation box; a second installation shaft rotatably connected to the waste heat utilization box body, and a second transmission roller is connected to the second installation shaft through a ratchet mechanism; the second installation shaft is fixedly connected to the output end of the second motor, and multiple groups of the second installation shafts extend into the second installation box and are connected through a second synchronous pulley set.

[0012] As a preferred embodiment of the present invention: it also includes a driving bar, a limiting shaft is rotatably installed in the waste heat utilization box, the driving bar passes through the second installation shaft and the limiting shaft, and the upper and lower ends of the driving bar are respectively connected with the second installation shaft and the limiting shaft.

[0013] As a preferred embodiment of the present invention: the sealing assembly includes a first electric telescopic cylinder fixedly connected to the waste heat utilization box, the output end of the first electric telescopic cylinder is fixedly connected to a first connecting plate, the bottom of the first connecting plate is fixedly connected to a first connecting rod, the bottom of the first connecting rod is fixedly connected to a first sealing plate, and the first sealing plate is sealed and slidably connected to the waste heat utilization box.

[0014] As a preferred embodiment of the present invention: the material inlet blocking part includes a second electric telescopic cylinder fixedly connected to the top of the waste heat utilization box, the output end of the second electric telescopic cylinder is fixedly connected to a second connecting plate, the bottom of the second connecting plate is fixedly connected to a second connecting rod, the bottom of the second connecting rod is fixedly connected to a second sealing plate, and the second sealing plate slides in a sealed manner with the waste heat utilization box; a hinged seat is fixedly installed on the top of the waste heat utilization box, a rotating shaft is rotatably connected to the hinged seat, a third sealing plate is fixedly connected to the rotating shaft, a transmission gear is fixedly connected to the rotating shaft, a transmission rack is fixedly connected to the second connecting rod, and the transmission rack is meshed with the transmission gear.

[0015] As a preferred embodiment of the present invention: a first temperature sensor and a second temperature sensor are fixedly installed on the side wall of the waste heat utilization box, and multiple groups of the first temperature sensors are provided, and the multiple groups of the first temperature sensors are connected to the multi-stage waste heat utilization chambers, and the second temperature sensor is connected to the heat dissipation chamber, and is arranged at one end of the heat dissipation chamber close to the upper and lower material chambers; an air duct is fixedly installed on the side wall of the waste heat utilization box, and multiple groups of branch pipes are provided on the side wall of the air duct, and the multiple groups of branch pipes are respectively connected to the multi-stage waste heat utilization chamber, the transfer chamber and the upper and lower material chambers, and control valves are fixedly installed on the multiple groups of branch pipes.

[0016] Compared with the prior art, the present invention provides a device for utilizing waste heat from processing high-temperature aluminum nitride workpieces, which has the following beneficial effects:

[0017] The parts not involved in the device are the same as the prior art or can be implemented by the prior art. The present invention realizes the gradual preheating and gradual cooling of the aluminum nitride ceramic workpiece through the design of a multi-stage waste heat utilization chamber and a heat dissipation chamber, thereby improving the sintering efficiency. At the same time, when replacing the aluminum nitride ceramic component inside the furnace body, there is no need to wait until the temperature inside the furnace body drops before opening the tank body to replace the aluminum nitride ceramic workpiece, and hot air reflux can be used after replacement to achieve further rapid heating of the preheated aluminum nitride ceramic, thereby improving the sintering efficiency of the aluminum nitride ceramic workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a device for utilizing waste heat from processing high-temperature aluminum nitride workpieces proposed by the present invention Figure 1 ;

[0019] Figure 2 A device for utilizing waste heat from processing high-temperature aluminum nitride workpieces proposed by the present invention Figure 1 Schematic diagram of the structure of the H part;

[0020] Figure 3 A schematic diagram of the three-dimensional structure of a device for utilizing waste heat from processing high-temperature aluminum nitride workpieces proposed by the present invention Figure 2 ;

[0021] Figure 4 This is a chamber distribution diagram of a device for utilizing residual heat from processing aluminum nitride high-temperature workpieces proposed by the present invention;

[0022] Figure 5 This is a schematic structural diagram of a material inlet plugging portion of a device for utilizing residual heat during processing of aluminum nitride high-temperature workpieces proposed by the present invention;

[0023] Figure 6 A device for utilizing waste heat from processing high-temperature aluminum nitride workpieces proposed by the present invention Figure 5 The structural diagram of part I;

[0024] Figure 7 This is a schematic diagram of the structure of a driving assembly of a device for utilizing waste heat from processing a high-temperature aluminum nitride workpiece, as proposed by the present invention;

[0025] Figure 8 A device for utilizing waste heat from processing high-temperature aluminum nitride workpieces proposed by the present invention Figure 7 The structural diagram of the J part;

[0026] Fig. 9 A device for utilizing waste heat from processing high-temperature aluminum nitride workpieces proposed by the present invention Figure 7 The structural diagram of the K part;

[0027] Fig.10This is a schematic structural diagram of a first transmission component of a device for utilizing residual heat from processing a high-temperature aluminum nitride workpiece proposed by the present invention;

[0028] Fig.11 This is a schematic structural diagram of the second transmission component of a device for utilizing waste heat from processing high-temperature aluminum nitride workpieces proposed by the present invention.

[0029] In the figure: 1. waste heat utilization box; 2. furnace body; 21. insulation tank; 22. electric heater; 23. vacuum tube; 24. air inlet pipe; 3. plugging assembly; 31. first electric telescopic cylinder; 32. first connecting plate; 33. first connecting rod; 34. first sealing plate; 4. material inlet plugging part; 41. second electric telescopic cylinder; 42. second connecting plate; 43. second connecting rod; 44. second sealing plate; 45. hinge seat; 46. rotating shaft; 47. third sealing plate; 48. transmission gear; 49. transmission rack; 5. first transmission assembly; 51. first installation box; 52. first installation shaft; 53. first transmission roller; 54. first motor; 55. first synchronous pulley set; 6. material rack; 61. plug slot; 62, placement plate; 7, second transmission assembly; 71, second mounting box; 72, second mounting shaft; 73, second transmission roller; 74, second motor; 75, second synchronous pulley set; 76, drive strip; 77, limit shaft; 8, sealing assembly; 81, mounting plate; 82, sealing ring; 83, mounting ring; 84, mounting plate; 85, support plate; 86, third mounting shaft; 87, driven wheel; 88, third transmission roller; 9, drive assembly; 91, coupling sleeve; 92, spline shaft; 93, third electric telescopic cylinder; 94, third motor; 95, gear set; 96, bottom box; 10, cooling fan; 11, first temperature sensor; 12, air duct; 13, control valve; 14, second temperature sensor. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] Example: Refer to Figure 1-Figure 11A device for utilizing waste heat from processing high-temperature aluminum nitride workpieces comprises a waste heat utilization box 1 and a furnace body 2. The waste heat utilization box 1 is composed of a loading chamber, a transfer chamber, a waste heat utilization chamber, a transfer chamber, a loading and unloading chamber, a heat dissipation chamber and a discharge chamber from an aluminum nitride ceramic entry end to an aluminum nitride ceramic discharge end. Figure 4 As shown, area a is a loading chamber, area b is a waste heat utilization chamber, area c is a transfer chamber, area d is an upper and lower material chamber, area e is a heat dissipation chamber, and area f is a discharge chamber; it also includes: a furnace body 2, which is arranged at the top of the waste heat utilization box 1, and the bottom of the furnace body 2 is connected to the upper and lower material chambers; the waste heat utilization chamber is divided into multi-stage waste heat utilization chambers by multiple groups of sealing components 3, and the temperature of the multi-stage waste heat utilization chambers decreases successively from one end close to the upper and lower material chambers to the feeding end of the waste heat utilization box 1; a heat dissipation fan 10 is arranged at the discharge end of the waste heat utilization box 1, and blows cooling gas from the discharge end of the waste heat utilization box 1 to the feeding end of the waste heat utilization box 1; the material inlet sealing part 4 is provided with two groups, which are respectively arranged at the two ends of the waste heat utilization box 1; a sealing component 8 is arranged in the sintering upper and lower material chamber, and when the sealing component 8 rises, the aluminum nitride ceramic workpiece is sent into the furnace body 2 and the furnace body 2 is sealed.

[0033] When transporting aluminum nitride ceramic workpieces, the first transmission component 5 and the second transmission component 7 are used for transportation, wherein the first transmission component 5 is provided with multiple groups, which are respectively arranged in the loading cavity, the multi-stage strengthening cavity, the heat dissipation cavity and the discharge cavity.

[0034] When the aluminum nitride ceramic workpiece is transferred into the furnace body 2, the aluminum nitride ceramic workpiece is transferred to the top of the sealing component 8 through the second transmission component 7. When the sealing component 8 is sealed with the furnace body 2, the aluminum nitride ceramic workpiece is moved into the furnace body 2 for sintering.

[0035] In order to facilitate the sintering of multiple aluminum nitride ceramic workpieces at one time, a material rack 6 is used to transport the aluminum nitride ceramic workpieces. A multi-layer slot 61 is provided on the material rack 6, and a placement plate 62 is placed in the slot 61. The aluminum nitride ceramic workpiece is placed on the placement plate 62, and then multiple groups of placement plates 62 are inserted into the slot 61 to increase the number of sintering each time. The material rack 6 is made of heat storage ceramics.

[0036] In summary, in this embodiment, the material rack 6 containing the aluminum nitride ceramic workpiece is placed in the waste heat utilization box 1 through the opening at the top of the loading chamber, and then the feeding port at the top of the loading chamber is closed, and at the same time, the loading chamber is connected to the multi-stage waste heat utilization chamber; then the material rack 6 is transported by the first transmission component 5 until a material rack 6 is placed in each chamber of the multi-stage waste heat utilization chamber and the transfer chamber; then the material rack 6 is sent to the sealing component 8 by the second transmission component 7, and the sealing component 8 is used to send the material rack 6 into the furnace body 2, and the air in the furnace body 2 is extracted by a vacuum machine and discharged into the protective gas, and then the temperature inside the furnace body 2 is raised to sinter the aluminum nitride ceramic component;

[0037] After sintering is completed, the second transmission component 7 drives the material rack 6 on the sealing component 8 to move into the heat dissipation cavity, and then moves the material rack 6 on the second transmission component 7 onto the sealing component 8, and then the sealing component 8 sends the replaced material rack 6 into the furnace body 2, but does not seal the furnace body 2, and then uses a vacuum pump to extract the air in the furnace body 2. When the furnace body 2 is connected to the upper and lower material chambers, the vacuum pump can extract the hot air in the waste heat utilization box 1, so that the hot air refluxes into the furnace body 2, so that the aluminum nitride ceramic in the furnace body 2 is quickly heated up. When the hot air in the waste heat utilization box 1 is sucked away, the sealing component 8 rises again to seal the furnace body 2, and then the furnace body 2 is used to sinter the newly added aluminum nitride ceramic workpiece;

[0038] During the sintering process, the two sets of material port sealing parts 4 connect the loading chamber, transfer chamber, waste heat utilization chamber, transfer chamber, upper and lower material chambers, heat dissipation chamber and discharge chamber, start the heat dissipation fan 10, and the heat dissipation fan 10 extracts low-temperature gas into the discharge chamber, so that the low-temperature gas blows to the material rack 6 in the heat dissipation chamber, absorbs the heat of the material rack 6 and the aluminum nitride ceramic workpiece, and then enters the transfer chamber and the multi-stage waste heat utilization chamber, so as to preheat the aluminum nitride ceramics in the transfer chamber and the multi-stage waste heat utilization chamber and cool the material rack and aluminum nitride ceramics in the heat dissipation chamber.

[0039] As the number of material racks 6 in the heat dissipation chamber increases, the material racks 6 closer to the discharge chamber take a longer time to cool down. Therefore, the temperature of the multiple groups of material racks 6 in the heat dissipation chamber gradually increases from the end close to the discharge port to the end of the upper and lower feeding chambers. Therefore, the airflow entering the waste heat utilization box 1 from one end of the discharge chamber gradually absorbs the temperature on the material rack 6, so that the airflow temperature gradually increases, thereby gradually cooling down the material rack 6 and the aluminum nitride ceramics on the material rack 6. At the same time, the temperature of the cooling airflow rises to the highest temperature at the upper and lower feeding points, and then enters the transfer chamber, and then passes through multiple stages of waste heat utilization chambers and the feeding chamber in turn, so that the material rack 6 and the aluminum nitride ceramics on the material rack 6 are gradually heated from one end of the feeding chamber to the end of the transfer chamber, thereby gradually preheating and gradually cooling down the aluminum nitride ceramics.

[0040] To summarize, through the design of multi-stage waste heat utilization chamber and heat dissipation cavity, the gradual preheating and gradual cooling of aluminum nitride ceramic workpieces are achieved, thereby improving the sintering efficiency. At the same time, when replacing the aluminum nitride ceramic components inside the furnace body 2, there is no need to wait until the temperature inside the furnace body 2 drops before opening the tank body to replace the aluminum nitride ceramic workpiece, and hot air reflux can be used after replacement to achieve further rapid heating of the preheated aluminum nitride ceramic, thereby improving the sintering efficiency of the aluminum nitride ceramic workpiece.

[0041] In summary, through the design of the multi-stage waste heat utilization chamber, the aluminum nitride ceramic workpiece can be gradually heated up before entering the furnace body 2, which reduces the time required for sintering and improves the sintering efficiency.

[0042] The combination of the heat dissipation cavity and the exhaust system enables the aluminum nitride ceramic workpiece to cool down quickly after sintering. At the same time, the preheating system can use this heat to preheat the new aluminum nitride ceramic workpiece, achieving efficient use of heat and continuous production. In the process of continuous sintering, the aluminum nitride ceramic can also be gradually cooled down.

[0043] The design of the multi-stage preheating and heat dissipation system allows heat to be recycled within the system, reducing energy waste.

[0044] The material rack 6 is made of heat storage ceramics, which further improves the heat storage and transfer efficiency and reduces energy consumption.

[0045] The design of the material rack 6 allows the number and number of layers of aluminum nitride ceramic workpieces to be adjusted as needed, thereby adapting to production requirements of different scales and batches.

[0046] Reference Figure 7 and Figure 8 The furnace body 2 includes a heat-insulating tank body 21 fixedly installed on the top of the waste heat utilization box body 1, an electric heater 22 is fixedly installed in the heat-insulating tank body 21, and a vacuum pipe 23 and an air inlet pipe 24 are fixedly installed on the top of the heat-insulating tank body 21.

[0047] An insulating cavity is provided in the insulating tank body 21 to prevent heat from dissipating and improve the thermal insulation effect of the furnace body 2. When the aluminum nitride ceramic is moved into the furnace body 2, the electric heater 22 is started to heat the aluminum nitride ceramic, thereby sintering the aluminum nitride ceramic.

[0048] Reference Figure 1 and Figure 8The sealing assembly 8 includes a mounting plate 81, on which a sealing ring 82 is fixedly mounted. When the sealing assembly 8 is raised, the sealing ring 82 is connected to the bottom of the heat-insulating tank body 21 to block the bottom of the heat-insulating tank body 21; it also includes a mounting ring 83 fixedly mounted on the top of the mounting plate 81, on which a mounting disk 84 is rotatably connected, on which a support plate 85 is fixedly mounted, on which a third mounting shaft 86 is rotatably mounted, on which a third transmission roller 88 is fixedly mounted, and on which both ends of the third mounting shaft 86 are connected to driven wheels through a ratchet mechanism. 87, also includes a driving assembly 9, the driving assembly 9 includes a bottom box 96 fixedly installed at the bottom of the waste heat utilization box body 1, a third motor 94 and a third electric telescopic cylinder 93 are fixedly installed in the bottom box 96, the output end of the third electric telescopic cylinder 93 is fixedly connected to the mounting plate 81; a coupling sleeve 91 is rotatably connected in the bottom box 96, the output shaft of the third motor 94 and the coupling sleeve 91 rotate synchronously through a gear set 95, and a spline shaft 92 is slidably connected to the coupling sleeve 91; the top of the spline shaft 92 is fixedly connected to the mounting plate 84, and the spline shaft 92 is rotatably connected to the mounting plate 81 through a sealed bearing.

[0049] In this embodiment, the third motor 94 is started, and the third motor 94 drives the coupling sleeve 91 through the gear set 95. The coupling sleeve 91 drives the spline shaft 92 to rotate, and the spline shaft 92 drives the mounting plate 84 to rotate, thereby driving the material rack 6 to rotate inside the furnace body 2.

[0050] The third electric telescopic cylinder 93 is started, and the mounting plate 81 is driven to rise or fall by the third electric telescopic cylinder 93, so as to send the material rack 6 into the furnace body 2 for sintering or take the material rack 6 out of the furnace body 2.

[0051] Reference Figure 5 and Fig.10 , and also includes multiple groups of first transmission components 5 arranged in the heat dissipation cavity and the waste heat utilization cavity, the first transmission components 5 include: two groups of first installation boxes 51 fixedly installed on both sides of the waste heat utilization box body 1, and a first motor 54 is fixedly installed in the first installation box 51; a first installation shaft 52 rotatably connected to the waste heat utilization box body 1, and a first transmission roller 53 is fixedly connected to the first installation shaft 52; the first installation shaft 52 is fixedly connected to the output end of the first motor 54, and multiple groups of first installation shafts 52 extend into the first installation box 51 and are connected through a first synchronous pulley set 55 for transmission.

[0052] In this embodiment, the first motor 54 is started, the first motor 54 drives the first installation shaft 52 to rotate, and the first installation shaft 52 drives the first transmission roller 53 to rotate, thereby transporting the material rack 6.

[0053] Reference Figure 4 and Fig.11, and also includes a second transmission component 7 arranged in the transfer cavity, the second transmission component 7 includes: two groups of second installation boxes 71 fixedly installed on both sides of the waste heat utilization box body 1, and a second motor 74 is fixedly installed in the second installation box 71; a second installation shaft 72 rotatably connected to the waste heat utilization box body 1, and a second transmission roller 73 is connected to the second installation shaft 72 through a ratchet mechanism; the second installation shaft 72 is fixedly connected to the output end of the second motor 74, and multiple groups of second installation shafts 72 extend into the second installation box 71 and are connected through a second synchronous pulley set 75 for transmission.

[0054] In this embodiment, the second motor 74 is started, the second motor 74 drives the second installation shaft 72 to rotate, and the second installation shaft 72 drives the second transmission roller 73 to rotate, thereby transporting the material rack 6.

[0055] It should be noted that the transmission distance of the second transmission component 7 is more than twice the transmission distance of the single group of first transmission components 5 .

[0056] Reference Figure 1 , Figure 4 , Figure 7 , Figure 8 and Fig.11 A third mounting shaft 86 is rotatably mounted on the support plate 85, a third transmission roller 88 is fixedly mounted on the third mounting shaft 86, both ends of the third mounting shaft 86 are connected to driven wheels 87 through a ratchet mechanism, and also includes a driving bar 76, a limiting shaft 77 is rotatably mounted in the waste heat utilization box 1, the driving bar 76 passes through the second mounting shaft 72 and the limiting shaft 77, and the upper and lower ends of the driving bar 76 are respectively in contact with the second mounting shaft 72 and the limiting shaft 77.

[0057] In this embodiment, when the sealing assembly 8 is lowered, the second mounting shaft 72 rotates, and the second mounting shaft 72 cooperates with the limiting shaft 77 to move the driving bar 76, and the driving bar 76 drives the driven wheel 87 to rotate. The driven wheel 87 drives the third transmission roller 88 to rotate under the action of the ratchet mechanism, and the third transmission roller 88 moves the material rack 6 to the first transmission assembly 5 in the heat dissipation chamber, and then the second mounting shaft 72 rotates in the opposite direction. When the second mounting shaft 72 rotates in the opposite direction, the second mounting shaft 72 causes the driving bar 76 to move back to the transfer chamber. In this process, under the action of the two sets of ratchet mechanisms, the second transmission roller 73 and the third transmission roller 88 no longer rotate.

[0058] Then the second mounting shaft 72 is rotated again, and the material rack 6 in the transfer chamber is transferred to the third transfer roller 88 by means of the second mounting shaft 72. After the material rack 6 in the transfer chamber is transported to the third transfer roller 88, the driving bar 76 is moved back to the transfer chamber again, and then the sealing assembly 8 rises to send the material rack 6 into the furnace body 2.

[0059] It should be noted that after the sealing component 8 is sealed with the furnace body 2, since the drive bar 76 is arranged on both sides of the spline shaft 92 and the third electric telescopic cylinder 93, when the sealing component 8 is sealed with the furnace body 2, when the second transmission component 7 is working, the drive bar 76 can extend into the upper and lower material chambers, so as to facilitate moving the material rack 6 in the waste heat utilization cavity to the second transmission component 7.

[0060] Reference Figure 1 and Figure 7 The sealing assembly 3 includes a first electric telescopic cylinder 31 fixedly connected to the waste heat utilization box 1, the output end of the first electric telescopic cylinder 31 is fixedly connected to a first connecting plate 32, the bottom of the first connecting plate 32 is fixedly connected to a first connecting rod 33, the bottom of the first connecting rod 33 is fixedly connected to a first sealing plate 34, and the first sealing plate 34 is sealed and slidable with the waste heat utilization box 1.

[0061] When in use, the first sealing plate 34 is driven to rise or fall by the first electric telescopic cylinder 31, so that the interior of the waste heat utilization channel is divided into a plurality of preheating chambers.

[0062] Reference Figure 5 and Figure 6 The material inlet blocking part 4 includes a second electric telescopic cylinder 41 fixedly connected to the top of the waste heat utilization box body 1, the output end of the second electric telescopic cylinder 41 is fixedly connected to a second connecting plate 42, the bottom of the second connecting plate 42 is fixedly connected to a second connecting rod 43, the bottom of the second connecting rod 43 is fixedly connected to a second sealing plate 44, and the second sealing plate 44 is sealed and slid with the waste heat utilization box body 1; a hinge seat 45 is fixedly installed on the top of the waste heat utilization box body 1, a rotating shaft 46 is rotatably connected to the hinge seat 45, a third sealing plate 47 is fixedly connected to the rotating shaft 46, a transmission gear 48 is fixedly connected to the rotating shaft 46, a transmission rack 49 is fixedly connected to the second connecting rod 43, and the transmission rack 49 is meshed with the transmission gear 48.

[0063] When it is necessary to add materials that need to be sintered or discharge cooled aluminum nitride ceramics to the waste heat utilization box 1, start the second electric telescopic cylinder 41 to control the second sealing plate 44 to descend. After the second sealing plate 44 descends, the waste heat utilization cavity and then the heat dissipation cavity are sealed. At the same time, during the descent of the second sealing plate 44, the second connecting rod 43 drives the transmission rack 49 to descend, and the transmission rack 49 drives the transmission gear 48 to rotate when it descends. The transmission gear 48 drives the third sealing plate 47 to open, thereby facilitating loading and unloading.

[0064] Furthermore, fourth electric telescopic cylinders are fixedly installed at the bottoms of both ends of the waste heat utilization box 1. The fourth electric telescopic cylinders extend to the waste heat utilization box 1 and a top plate is fixedly installed therein. When the top plate rises, the material rack 6 located in the feed chamber and the discharge chamber is driven to rise.

[0065] Reference Figure 1-Figure 7 A first temperature sensor 11 and a second temperature sensor 14 are fixedly installed on the side wall of the waste heat utilization box 1. Multiple groups of first temperature sensors 11 are arranged. The multiple groups of first temperature sensors 11 are connected to the multi-stage waste heat utilization chambers. The second temperature sensor 14 is connected to the heat dissipation chamber and is arranged at one end of the heat dissipation chamber close to the upper and lower material chambers; an air duct 12 is fixedly installed on the side wall of the waste heat utilization box 1. Multiple groups of branch pipes are arranged on the side wall of the air duct 12. The multiple groups of branch pipes are respectively connected to the multi-stage waste heat utilization chambers, the transfer chamber and the upper and lower material chambers, and the multiple groups of branch pipes are fixedly installed with control valves 13.

[0066] There are multiple groups of first temperature sensors 11 distributed on the multi-stage waste heat utilization chamber. There are multiple groups of first temperature sensors 11 respectively arranged in each chamber of the multi-stage waste heat utilization chamber and the transfer chamber. The second temperature sensor 14 is arranged at one end of the heat dissipation chamber close to the loading and unloading chamber.

[0067] Starting from the transfer chamber and ending at the loading chamber, when the temperature detected by the previous first temperature sensor 11 is equal to or close to the temperature detected by the second temperature sensor 14, the sealing component 3 on the corresponding chamber blocks the chamber where the temperature has been reached, and then the hot air is introduced into the next chamber through the control valve 13 and the air duct 12. The chamber into which the hot air is newly introduced serves as the new preheating starting section. When the temperature of the heat dissipation chamber drops, the chamber into which the hot air enters is changed to ensure that the temperature of the aluminum nitride ceramic after preheating does not drop.

[0068] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A waste heat utilization device for processing high-temperature aluminum nitride workpieces, comprising a waste heat utilization box (1) and a furnace body (2), characterized in that: The waste heat utilization box (1) comprises a loading chamber, a transfer chamber, a waste heat utilization channel, a loading and unloading chamber, a heat dissipation chamber and a discharge chamber from the aluminum nitride ceramic entry end to the aluminum nitride ceramic discharge end, and further comprises: A furnace body (2) is arranged on the top of the waste heat utilization box (1), and the bottom of the furnace body (2) is connected to the upper and lower material chambers; The waste heat utilization cavity is divided into multiple levels of waste heat utilization chambers by multiple groups of blocking components (3), and the temperature of the multiple levels of waste heat utilization chambers decreases from one end close to the loading and unloading chamber to the feeding end of the waste heat utilization box (1); A heat dissipation fan (10) is arranged at the discharge end of the waste heat utilization box (1) and blows cooling gas from the discharge end of the waste heat utilization box (1) to the feed end of the waste heat utilization box (1); The material inlet blocking parts (4) are provided in two groups, which are respectively provided at two ends of the waste heat utilization box (1); A sealing component (8) is arranged in the sintering loading and unloading chamber, and when the sealing component (8) rises, the aluminum nitride ceramic workpiece is sent into the furnace body (2) and the furnace body (2) is sealed; A plurality of first transmission components (5) arranged in the heat dissipation cavity and the waste heat utilization cavity; A second transmission component (7) disposed in the transfer chamber; A material rack (6), wherein the material rack (6) carries the aluminum nitride ceramic and is transported through the first transmission component (5) and the second transmission component (7) to sequentially pass through the loading chamber, the transfer chamber, the waste heat utilization chamber, the loading and unloading chambers, the heat dissipation chamber and the discharge chamber; The cooling gas absorbs heat and gradually absorbs the heat of the aluminum nitride ceramic workpiece during the process of moving from the discharge chamber to the upper and lower chambers, and then gradually exchanges heat with the aluminum nitride ceramic during the process of moving from the upper and lower chambers to the feed chamber.

2. The device for utilizing waste heat from processing high-temperature aluminum nitride workpieces according to claim 1, characterized in that: The furnace body (2) comprises a heat-insulating tank body (21) fixedly mounted on the top of the waste heat utilization box body (1), an electric heater (22) fixedly mounted inside the heat-insulating tank body (21), and a vacuum pipe (23) and an air intake pipe (24) fixedly mounted on the top of the heat-insulating tank body (21).

3. The device for utilizing waste heat from processing high-temperature aluminum nitride workpieces according to claim 1, characterized in that: The sealing assembly (8) comprises a mounting plate (81), on which a sealing ring (82) is fixedly mounted, and when the sealing assembly (8) has completed its ascent, the sealing ring (82) is connected to the bottom of the heat-insulating tank body (21) to seal the bottom of the heat-insulating tank body (21); It also comprises a mounting ring (83) fixedly mounted on the top of the mounting plate (81), a mounting disc (84) being rotatably connected to the mounting ring (83), a support plate (85) being fixedly mounted on the mounting disc (84), a third mounting shaft (86) being rotatably mounted on the support plate (85), a third transmission roller (88) being fixedly mounted on the third mounting shaft (86), and two ends of the third mounting shaft (86) being connected to driven wheels (87) via a ratchet mechanism.

4. The device for utilizing waste heat from processing high-temperature aluminum nitride workpieces according to claim 3, characterized in that: It also includes a drive assembly (9), the drive assembly (9) including a bottom box (96) fixedly mounted on the bottom of the waste heat utilization box (1), a third motor (94) and a third electric telescopic cylinder (93) fixedly mounted in the bottom box (96), and an output end of the third electric telescopic cylinder (93) fixedly connected to the mounting plate (81); A coupling sleeve (91) is rotatably connected in the bottom box (96); the output shaft of the third motor (94) and the coupling sleeve (91) rotate synchronously via a gear set (95); a spline shaft (92) is slidably connected to the coupling sleeve (91); the top of the spline shaft (92) is fixedly connected to the mounting plate (84); and the spline shaft (92) is rotatably connected to the mounting plate (81) via a sealed bearing.

5. The device for utilizing waste heat from processing high-temperature aluminum nitride workpieces according to claim 1, characterized in that: The first transmission component (5) comprises: Two sets of first installation boxes (51) fixedly installed on both sides of the waste heat utilization box body (1), wherein a first motor (54) is fixedly installed in the first installation box (51); A first installation shaft (52) rotatably connected to the waste heat utilization box (1), wherein a first transmission roller (53) is fixedly connected to the first installation shaft (52); The first installation shaft (52) is fixedly connected to the output end of the first motor (54), and a plurality of groups of the first installation shafts (52) extend into the first installation box (51) and are transmission-connected via a first synchronous pulley group (55).

6. The device for utilizing waste heat from processing high-temperature aluminum nitride workpieces according to claim 1, characterized in that: The second transmission component (7) comprises: Two sets of second installation boxes (71) fixedly installed on both sides of the waste heat utilization box body (1), wherein a second motor (74) is fixedly installed in the second installation box (71); A second installation shaft (72) rotatably connected to the waste heat utilization box (1), wherein the second installation shaft (72) is connected to a second transmission roller (73) via a ratchet mechanism; The second installation shaft (72) is fixedly connected to the output end of the second motor (74), and a plurality of sets of the second installation shafts (72) extend into the second installation box (71) and are transmission-connected via a second synchronous pulley set (75).

7. The device for utilizing waste heat from processing high-temperature aluminum nitride workpieces according to claim 6, characterized in that: It also comprises a driving bar (76), a limiting shaft (77) rotatably mounted in the waste heat utilization box (1), the driving bar (76) passing through the second mounting shaft (72) and the limiting shaft (77), and the upper and lower ends of the driving bar (76) are respectively in contact with the second mounting shaft (72) and the limiting shaft (77).

8. The device for utilizing waste heat from processing high-temperature aluminum nitride workpieces according to claim 1, characterized in that: The blocking assembly (3) comprises a first electric telescopic cylinder (31) fixedly connected to the waste heat utilization box (1); the output end of the first electric telescopic cylinder (31) is fixedly connected to a first connecting plate (32); the bottom of the first connecting plate (32) is fixedly connected to a first connecting rod (33); the bottom of the first connecting rod (33) is fixedly connected to a first sealing plate (34); the first sealing plate (34) slides in a sealed manner with the waste heat utilization box (1).

9. The device for utilizing waste heat from processing high-temperature aluminum nitride workpieces according to claim 1, characterized in that: The material inlet blocking portion (4) comprises a second electric telescopic cylinder (41) fixedly connected to the top of the waste heat utilization box (1); the output end of the second electric telescopic cylinder (41) is fixedly connected to a second connecting plate (42); the bottom of the second connecting plate (42) is fixedly connected to a second connecting rod (43); the bottom of the second connecting rod (43) is fixedly connected to a second sealing plate (44); the second sealing plate (44) slides in a sealed manner with the waste heat utilization box (1); A hinged seat (45) is fixedly mounted on the top of the waste heat utilization box (1); a rotating shaft (46) is rotatably connected to the hinged seat (45); a third sealing plate (47) is fixedly connected to the rotating shaft (46); a transmission gear (48) is fixedly connected to the rotating shaft (46); a transmission rack (49) is fixedly connected to the second connecting rod (43); and the transmission rack (49) meshes with the transmission gear (48).

10. The device for utilizing waste heat from processing high-temperature aluminum nitride workpieces according to claim 1, characterized in that: A first temperature sensor (11) and a second temperature sensor (14) are fixedly mounted on the side wall of the waste heat utilization box (1), wherein the first temperature sensors (11) are provided in multiple groups, and the multiple groups of the first temperature sensors (11) are connected to the multi-stage waste heat utilization chambers, and the second temperature sensor (14) is connected to the heat dissipation chamber and is arranged at one end of the heat dissipation chamber close to the upper and lower material chambers; An air guide pipe (12) is fixedly mounted on the side wall of the waste heat utilization box (1), and a plurality of groups of branch pipes are arranged on the side wall of the air guide pipe (12), and the plurality of groups of branch pipes are respectively connected to the multi-stage waste heat utilization chambers, the transfer chamber, and the upper and lower material chambers, and a control valve (13) is fixedly mounted on each of the plurality of groups of branch pipes.

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