A crystallization roller kiln for processing microcrystalline glass and its use method

Abstract

The invention discloses a crystallization roller kiln for processing microcrystalline glass and a method for using the same, and relates to the technical field of roller kilns. The crystallization roller kiln for processing microcrystalline glass comprises a preheating kiln, a heating kiln and a cooling kiln, wherein the preheating kiln, the heating kiln and the cooling kiln are connected in sequence, and roller structures are arranged inside the preheating kiln, the heating kiln and the cooling kiln; vents are arranged on both sides of the preheating kiln, the heating kiln and the cooling kiln, a gas collecting port is arranged at the bottom of the preheating kiln, and an exhaust port is arranged at the bottom of the cooling kiln; gas delivery structures are installed at the corresponding vents on both sides of the preheating kiln, the heating kiln and the cooling kiln, the gas delivery structure on the heating kiln is connected to a first connecting pipe, the gas delivery structure on the preheating kiln is connected to a second connecting pipe, the gas delivery structure on the cooling kiln is connected to a third connecting pipe, and the first connecting pipe is connected to the second connecting pipe; a heating structure is installed inside the heating kiln, which solves the problems of uneven temperature control, heat waste and difficulty in ensuring crystallization quality in the prior art when processing microcrystalline glass.

Description

Technical Field

[0001] The invention relates to the technical field of roller kilns, and in particular to a crystallization roller kiln for processing microcrystalline glass and a use method thereof. Background Art

[0002] Glass-ceramics refers to glass that has certain nucleating substances added to it, and through heat treatment, light irradiation, or chemical treatment, a large number of tiny crystals are uniformly precipitated in the glass to form a dense multiphase complex of microcrystalline phase and glass phase. By controlling the type, quantity, and size of the microcrystals, transparent glass-ceramics, glass-ceramics with zero expansion coefficient, surface-strengthened glass-ceramics, and glass-ceramics of different colors or machinable glass-ceramics can be obtained. The roller kiln is a tunnel kiln with a narrow and long cross-section. It is composed of rollers arranged in parallel and crossing the cross-section of the kiln's working channel. The products are placed on the rollers and transported into the kiln as the rollers rotate. The crystallization and firing process is completed in the kiln, so it is called a roller kiln.

[0003] The Chinese utility model patent with announcement number CN208717161U discloses a microcrystalline glass crystallization roller kiln, including a support seat, on which a kiln body is arranged, and the kiln body consists of a feeding kiln, a discharging kiln and a firing kiln, a firing kiln is arranged in the middle of the kiln body, and the two sides of the firing kiln are respectively the feeding kiln and the discharging kiln, a conveyor belt is installed in the kiln body, and the conveyor belt passes through the feeding kiln, the firing kiln and the discharging kiln respectively, a firing device is arranged inside the firing kiln, and the firing device is installed at the bottom of the firing kiln, a partition plate is arranged inside the firing kiln, and the partition plate is arranged at the upper end of the firing kiln, a fan cover is fixedly arranged on the outside of the firing kiln, and the fan cover is welded to the middle position of the top of the firing kiln.

[0004] However, the existing technology has problems such as uneven temperature control, heat waste, and difficulty in ensuring crystallization quality during the processing of microcrystalline glass. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a crystallization roller kiln for microcrystalline glass processing and a method of use, which solves the problems of uneven temperature control, heat waste and difficulty in ensuring crystallization quality in the microcrystalline glass processing process in the prior art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a crystallization roller kiln for processing microcrystalline glass, comprising a kiln body, the kiln body comprising a preheating kiln, a heating kiln and a cooling kiln, the preheating kiln, the heating kiln and the cooling kiln are connected in sequence, and roller structures are arranged inside the preheating kiln, the heating kiln and the cooling kiln; ventilation holes are arranged on both sides of the preheating kiln, the heating kiln and the cooling kiln, a gas collecting port is arranged at the bottom of the preheating kiln, and an exhaust port is arranged at the bottom of the cooling kiln; gas delivery structures are installed at the corresponding ventilation holes on both sides of the preheating kiln, the heating kiln and the cooling kiln, the gas delivery structure on the heating kiln is connected to a first connecting pipe, the gas delivery structure on the preheating kiln is connected to a second connecting pipe, the gas delivery structure on the cooling kiln is connected to a third connecting pipe, and the first connecting pipe is connected to the second connecting pipe; a heating structure is installed inside the heating kiln.

[0007] Further, the gas delivery structure includes a gas delivery pipe fitting, an electric fan is installed at the air inlet of the gas delivery pipe fitting, and the air inlet of the gas delivery pipe fitting is connected to the ventilation port accordingly; the electric fan installed at the ventilation port corresponding to the gas delivery pipe fitting on the heating kiln is a suction fan, the electric fan installed at the ventilation port corresponding to the gas delivery pipe fitting on the preheating kiln is a hair dryer, and the electric fan installed at the ventilation port corresponding to the gas delivery pipe fitting on the cooling kiln is a hair dryer; the air outlet of the gas delivery pipe fitting on the heating kiln is connected to the first connecting pipe, and the air outlet of the gas delivery pipe fitting on the preheating kiln is connected to the second connecting pipe.

[0008] Further, the heating structure includes a first heat-conducting cover and a first heating wire, the first heating wire is arranged inside the first heat-conducting cover, and the first heating wire is connected to a power supply through a thyristor; the heating structure also includes a second heat-conducting cover and a second heating wire, the second heating wire is arranged inside the second heat-conducting cover, the second heating wire is connected to a relay through a thyristor, and the relay is connected to a power supply; each of the heating kilns is provided with two first heat-conducting covers, the two first heat-conducting covers are respectively fixed at the top and bottom of the heating kiln, and the second heat-conducting cover is fixedly connected to the vent of the heating kiln.

[0009] Furthermore, the roller structure includes a roller and a roller bracket, the roller is installed on the surface of the roller bracket through a connecting shaft, a driving motor is connected to the surface of the preheating kiln, the heating kiln and the cooling kiln, the output shaft of the driving motor is connected to the transmission gear box, and the transmission gear box is connected to the connecting shaft; a temperature sensor is fixedly connected to the bottom of the roller bracket.

[0010] Furthermore, the heating kilns are provided with multiple ones which are connected in sequence, the first connecting pipe on the heating kiln close to the preheating kiln is connected to the second connecting pipe, the first connecting pipes on two adjacent heating kilns are connected to each other, one end of the first connecting pipe on the heating kiln connected to the cooling kiln is closed, and the third connecting pipe is closed close to the heating kiln; the first connecting pipe and the second connecting pipe and two adjacent first connecting pipes are connected by a sleeve pipe, a rubber ring is fixedly connected to the inside of the sleeve pipe, and the inner side wall of the rubber ring is connected to the inner side wall of the first connecting pipe and the second connecting pipe.

[0011] Furthermore, an atmosphere former is fixedly connected to the top of the heating kiln, an air inlet end of the atmosphere former is connected to an external gas delivery device, and an air outlet end of the atmosphere former is fixedly passed through the top of the heating kiln; a Raman spectrometer is connected to the side of the heating kiln close to the preheating kiln, a laser rangefinder is connected to the side of the heating kiln away from the preheating kiln, and an X-ray diffraction analyzer is connected to the outlet of the cooling kiln; gas detectors are fixedly connected to the surfaces of the first connecting pipe and the second connecting pipe.

[0012] A method for using a crystallization roller kiln for processing microcrystalline glass is applied to the above-mentioned crystallization roller kiln for processing microcrystalline glass, comprising the following steps: sequentially docking a preheating kiln, a plurality of heating kilns and a cooling kiln, docking a first connecting pipe with a second connecting pipe; performing a pre-crystallization performance test on the roller kiln to determine whether the pre-crystallization performance is qualified: if the pre-crystallization performance is unqualified, an early warning is issued, and a manual maintenance instruction is sent; if it is qualified, crystallization of the microcrystalline glass is started: a heating structure heats the interior of the heating kiln, a gas transmission structure on the heating kiln transmits the heat in the heating kiln to the second connecting pipe through the first connecting pipe, and a gas transmission structure on the preheating kiln transmits the heat in the second connecting pipe to the preheating kiln, The microcrystalline glass is preheated; the Raman spectrometer on the first heating kiln performs Raman spectroscopy analysis on the preheated microcrystalline glass to determine the heating atmosphere of the first heating kiln, and delivers the required gas to the first heating kiln through the atmosphere former; the laser rangefinder on the first heating kiln detects the surface flatness of the heated microcrystalline glass, and if it is detected that the flatness is unqualified, an early warning is sent and the position is marked; after passing through multiple heating kilns, the microcrystalline glass enters the cooling kiln, and the gas transmission structure on the cooling kiln delivers external dry cold air into the cooling kiln through the third connecting pipe to cool the microcrystalline glass; the X-ray diffraction analyzer on the cooling kiln performs crystal analysis on the microcrystalline glass to determine whether the crystallization of the microcrystalline glass is qualified.

[0013] Further, the roller kiln is tested for performance before crystallization to determine whether the performance before crystallization is qualified, including the following steps: starting the roller structure, and testing the speed of the roller of the roller structure to determine whether the speed is qualified: obtaining the actual speed of the rollers on the preheating kiln, the heating kiln and the cooling kiln, and obtaining the parameter speed stored in the database;

[0014] Get the speed evaluation coefficient based on the actual speed and the reference speed:

[0015] ;

[0016] In the formula, is the speed evaluation coefficient, is the actual speed of the roller on the preheating kiln, i is the number of the heating kiln, n is the total number of heating kilns, is the actual speed of the roller on the i-th heating kiln, is the actual speed of the roller on the cooling kiln, is the set speed of the roller on the preheating kiln, is the parameterized speed of the roller on the i-th heating kiln, It is the set speed of the roller on the cooling kiln;

[0017] If the speed evaluation coefficient is greater than the speed evaluation threshold stored in the database, the speed is unqualified and a manual maintenance instruction is sent; if the speed evaluation coefficient is not greater than the speed evaluation threshold stored in the database, the speed is qualified and a no-load thermal performance test is performed to determine whether the thermal performance of the roller kiln is qualified: if the thermal performance is unqualified, an early warning is issued and a manual maintenance instruction is sent; if the thermal performance is qualified, the performance before crystallization is determined to be qualified.

[0018] Furthermore, judging whether the thermal performance of the roller kiln is qualified includes the following steps: the first heating wire and the second heating wire in the heating structure are energized, and heating temperature data are obtained based on the temperature sensor on the roller bracket in the heating kiln; the temperature rise rate of the heating kiln and the temperature distribution data of each heating setting time are obtained based on the heating temperature data; the parameterized temperature rise rate of the heating kiln and the parameterized temperature distribution data of each heating setting time stored in the database are obtained; the first thermal performance evaluation coefficient is obtained based on the temperature rise rate, the temperature distribution data of each heating setting time, the parameterized temperature rise rate and the parameterized temperature distribution data of each heating setting time; if the first thermal performance evaluation coefficient is greater than the first thermal performance evaluation threshold stored in the database, the thermal performance is unqualified; if the first thermal performance evaluation coefficient is not greater than the first thermal performance evaluation threshold stored in the database a thermal performance evaluation threshold, then after the gas transmission structure on the heating kiln and the preheating kiln is started, the preheating temperature data is obtained based on the temperature sensor on the roller bracket in the preheating kiln; the temperature distribution data of each preheating setting time of the preheating kiln is obtained based on the heating temperature data; the actual time for the internal temperature of the heating kiln to return to the set temperature after it is lowered after the gas transmission structure is started is obtained; the parameterized temperature distribution data of each preheating setting time of the preheating kiln set in the database and the parameterized time for the internal temperature of the heating kiln to return to the set temperature after it is lowered are obtained; a second thermal performance evaluation coefficient is obtained; if the second thermal performance evaluation coefficient is greater than the second thermal performance evaluation threshold stored in the database, the thermal performance is unqualified; if the second thermal performance evaluation coefficient is not greater than the second thermal performance evaluation threshold stored in the database, the thermal performance of the roller kiln is qualified.

[0019] Furthermore, the first thermal performance evaluation coefficient is obtained as follows:

[0020] ;

[0021] In the formula, is the first thermal performance evaluation coefficient, j is the number of the heating setting time, m is the total number of heating setting times, is the temperature rise rate of the i-th heating kiln, To determine the temperature rise rate, The temperature distribution data for the jth heating setting time of the i-th heating kiln, The parameter temperature distribution data of the jth heating setting time of the heating kiln, for and Similarity function of , n is the total number of heating kilns;

[0022] The second thermal performance evaluation coefficient is obtained as follows:

[0023] ;

[0024] is the second thermal performance evaluation coefficient, b is the number of the preheating setting time, B is the total number of preheating setting times, The temperature distribution data of the preheating kiln for the bth preheating setting time, The parameter temperature distribution data for the bth preheating setting time of the preheating kiln, for and The similarity function of is the actual duration, For the duration of participation.

[0025] The present invention has the following beneficial effects:

[0026] The crystallization roller kiln and use method for glass-ceramics processing form an efficient and accurate heat circulation and temperature control system by constructing a segmented design of a preheating kiln, a heating kiln and a cooling kiln, and combining a gas transmission structure and a heating structure, thereby achieving uniform heating, atmosphere control, waste gas recovery and crystal quality detection during the glass-ceramics processing.

[0027] The crystallization roller kiln and use method for glass-ceramics processing uses thyristors to accurately adjust the current of the heating wire to avoid uneven temperature distribution; uses an atmosphere former and a variety of detection devices (such as Raman spectrometers, laser rangefinders, and X-ray diffractometers) to dynamically optimize the atmosphere environment and crystallization quality control, effectively solving the problems of uneven temperature control, heat waste, and difficulty in ensuring crystallization quality in glass-ceramics processing, and significantly improving production efficiency and quality.

[0028] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 It is a schematic diagram of the internal structure of the preheating kiln of the present invention.

[0031] Figure 3 It is a schematic diagram of the structure of the gas collecting port of the present invention.

[0032] Figure 4 It is a schematic diagram of the structure of the rubber ring of the present invention.

[0033] Figure 5 It is a schematic structural diagram of the heating kiln of the present invention.

[0034] Figure 6 It is a structural schematic diagram of the Raman spectrometer of the present invention.

[0035] Figure 7 It is a schematic diagram of the structure of the gas transmission pipe fitting of the present invention.

[0036] Figure 8 It is a schematic diagram of the roller structure of the present invention.

[0037] Fig. 9 It is a schematic diagram of the structure of the temperature sensor of the present invention.

[0038] Fig.10 It is a schematic diagram of the structure of the exhaust port of the present invention.

[0039] Fig.11 It is a schematic diagram of the circuit structure of the heating structure of the present invention.

[0040] In the figure, 1, kiln body; 101, preheating kiln; 102, heating kiln; 103, cooling kiln; 2, ventilation port; 3, gas collecting port; 4, exhaust port; 5, first connecting pipe; 6, third connecting pipe; 7, second connecting pipe; 8, gas pipe fittings; 9, electric fan; 10, first heat-conducting cover; 11, first heating wire; 12, second heat-conducting cover; 13, second heating wire; 14, relay; 15, roller; 16, roller bracket; 17, driving motor; 18, transmission gear box; 19, temperature sensor; 20, sleeve tube; 21, rubber ring; 22, atmosphere former; 23, Raman spectrometer; 24, laser rangefinder; 25, X-ray diffraction analyzer; 26, gas detector. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] See also Figure 1-Figure 11The embodiment of the present invention provides a technical solution: a crystallization roller kiln for processing microcrystalline glass, comprising a kiln body 1, the kiln body 1 comprising a preheating kiln 101, a heating kiln 102 and a cooling kiln 103, the preheating kiln 101, the heating kiln 102 and the cooling kiln 103 are connected in sequence, and the preheating kiln 101, the heating kiln 102 and the cooling kiln 103 are all provided with roller structures; both sides of the preheating kiln 101, the heating kiln 102 and the cooling kiln 103 are provided with ventilation holes 2, and the bottom of the preheating kiln 101 is provided with a roller structure; A gas collecting port 3 is provided, and an exhaust port 4 is opened at the bottom of the cooling kiln 103; gas supply structures are installed at the corresponding ventilation ports 2 on both sides of the preheating kiln 101, the heating kiln 102 and the cooling kiln 103, the gas supply structure on the heating kiln 102 is connected to the first connecting pipe 5, the gas supply structure on the preheating kiln 101 is connected to the second connecting pipe 7, the gas supply structure on the cooling kiln 103 is connected to the third connecting pipe 6, and the first connecting pipe 5 is connected to the second connecting pipe 7; a heating structure is installed inside the heating kiln 102.

[0044] Specifically, the gas delivery structure includes a gas delivery pipe 8, an electric fan 9 is installed at the air inlet of the gas delivery pipe 8, and the air inlet of the gas delivery pipe 8 is connected to the vent 2 correspondingly; the electric fan 9 installed at the vent 2 corresponding to the gas delivery pipe 8 on the heating kiln 102 is a suction fan, the electric fan 9 installed at the vent 2 corresponding to the gas delivery pipe 8 on the preheating kiln 101 is a blower, and the electric fan 9 installed at the vent 2 corresponding to the gas delivery pipe 8 on the cooling kiln 103 is a blower; the air outlet of the gas delivery pipe 8 on the heating kiln 102 is connected to the first connecting pipe 5, and the air outlet of the gas delivery pipe 8 on the preheating kiln 101 is connected to the second connecting pipe 7.

[0045] In this embodiment, the electric blower 9 in the gas pipe 8 on the heating kiln 102 is started, and the heat in the heating kiln 102 can be sucked into the gas pipe 8, and flow through the first connecting pipe 5, and then enter the interior of the second connecting pipe 7. The blower in the gas pipe 8 on the preheating kiln 101 can send the hot air in the second connecting pipe 7 into the preheating kiln 101, so as to preheat the microcrystalline glass in the preheating kiln 101.

[0046] In addition, a gas collecting port 3 is provided at the bottom of the preheating kiln 101, and the gas collecting port 3 is connected to an external gas recovery device to recover the hot gas in the preheating kiln 101 to prevent it from flowing out from the inlet of the preheating kiln 101, which would cause a large amount of heat at the inlet and may cause interference to nearby workers. In addition, the waste gas generated during the heating process of the microcrystalline glass can be recovered, and the atmosphere gas in the heating kiln 102, such as hydrogen, nitrogen, etc., can also be centrally recovered.

[0047] After the microcrystalline glass enters the cooling kiln 103, the third connecting pipe 6 is connected to the external cold air delivery equipment. Under the action of the hair dryer inside the air delivery pipe 8 on the cooling kiln 103, dry cold air is blown into the interior of the cooling kiln 103, thereby cooling the microcrystalline glass.

[0048] Specifically, the heating structure includes a first heat-conducting cover 10 and a first heating wire 11, the first heating wire 11 is arranged inside the first heat-conducting cover 10, and the first heating wire 11 is connected to the power supply through a thyristor; the heating structure also includes a second heat-conducting cover 12 and a second heating wire 13, the second heating wire 13 is arranged inside the second heat-conducting cover 12, the second heating wire 13 is connected to a relay 14 through a thyristor, and the relay 14 is connected to the power supply; each heating kiln 102 is provided with two first heat-conducting covers 10, the two first heat-conducting covers 10 are respectively fixed at the top and bottom of the heating kiln 102, and the second heat-conducting cover 12 is fixedly connected to the vent 2 of the heating kiln 102.

[0049] like Fig.11 As shown, each first heating wire 11 is connected to a thyristor, which can adjust the current flowing through the first heating wire 11. The current of different first heating wires 11 can be adjusted according to the temperature distribution inside the heating kiln 102, so as to achieve temperature balance inside the heating kiln 102.

[0050] In addition, when the electric fan 9 in the gas delivery pipe 8 on the heating kiln 102 is started, the heat in the heating kiln 102 will be transported away, thereby causing the temperature near the vent 2 to drop. At this time, the relay 14 switch can be connected to energize the second heating wire 13, and at the same time, the energizing current of the second heating wire 13 is controlled according to the rotation speed of the electric fan 9 to ensure a balanced temperature distribution, wherein the rotation speed of the electric fan 9 and the energizing current are one-to-one corresponding and stored in the database, and the required energizing current can be directly obtained according to the current rotation speed of the electric fan 9, thereby controlling the thyristor.

[0051] The heat generated by the first heating wire 11 and the second heating wire 13 can be transferred to the interior of the heating kiln 102 through the first heat conductive cover 10 and the second heat conductive cover 12, while preventing the first heating wire 11 and the second heating wire 13 from contacting the atmosphere in the heating kiln 102 to prevent accidents.

[0052] Specifically, the roller structure includes a roller 15 and a roller bracket 16. The roller 15 is installed on the surface of the roller bracket 16 through a connecting shaft. A driving motor 17 is connected to the surface of the preheating kiln 101, the heating kiln 102 and the cooling kiln 103. The output shaft of the driving motor 17 is connected to a transmission gear box 18, and the transmission gear box 18 is connected to the connecting shaft. A temperature sensor 19 is fixedly connected to the bottom of the roller bracket 16.

[0053] In this embodiment, the microcrystalline glass to be crystallized is placed on the roller 15, the driving motor is started, and the transmission gear box 18 can drive the roller 15 on the roller bracket 16 to rotate through the connecting shaft, so that the microcrystalline glass to be crystallized passes through the preheating kiln 101, the heating kiln 102 and the cooling kiln 103 in sequence, thereby realizing the preheating, heating crystallization and cooling of the microcrystalline glass.

[0054] Specifically, a plurality of heating kilns 102 are provided and connected in sequence. The first connecting pipe 5 on the heating kiln 102 close to the preheating kiln 101 is connected to the second connecting pipe 7, the first connecting pipes 5 on two adjacent heating kilns 102 are connected to each other, one end of the first connecting pipe 5 on the heating kiln 102 connected to the cooling kiln 103 is closed, and the third connecting pipe 6 is closed close to the heating kiln 102; the first connecting pipe 5 and the second connecting pipe 7 and two adjacent first connecting pipes 5 are connected by a sleeve pipe 20, and a rubber ring 21 is fixedly connected to the inside of the sleeve pipe 20, and the inner wall of the rubber ring 21 is connected to the inner wall of the first connecting pipe 5 and the second connecting pipe 7.

[0055] In this embodiment, the rubber ring 21 is in contact with the first connecting tube 5 and the second connecting tube 7, thereby preventing air leakage and heat loss.

[0056] Specifically, an atmosphere former 22 is fixedly connected to the top of the heating kiln 102, the air inlet end of the atmosphere former 22 is connected to an external gas delivery device, and the air outlet end of the atmosphere former 22 is fixedly passed through the top of the heating kiln 102; a Raman spectrometer 23 is connected to the side of the heating kiln 102 close to the preheating kiln 101, a laser rangefinder 24 is connected to the side of the heating kiln 102 away from the preheating kiln 101, and an X-ray diffraction analyzer 25 is connected to the outlet of the cooling kiln 103; gas detectors 26 are fixedly connected to the surfaces of the first connecting tube 5 and the second connecting tube 7.

[0057] In this embodiment, the Raman spectrometer 23 can detect the changes in chemical bonds of the microcrystalline glass in the heating kiln 102, detect changes in chemical bonds such as Si-O, Al-O and molecular vibrations, compare these results with the information stored in the database, and determine the storage information stored in the database that is closest to these results, so as to obtain the required atmosphere environment corresponding to these storage information in the database, and then the external gas delivery equipment delivers the gas to the interior of the heating kiln 102 through the atmosphere former 22.

[0058] The laser rangefinder 24 detects the distance between the surface of the microcrystalline glass and the laser rangefinder 24, and compares this distance with the set distance stored in the database. If the deviation is large, it means that the surface of the microcrystalline glass is uneven, so an alarm is sent and the location of the unevenness is determined based on the rotation speed of the roller 15 and the transportation time.

[0059] The X-ray diffraction analyzer 25 can perform crystal phase analysis on the crystallized samples at the outlet of the cooling kiln 103 to confirm the crystallization quality and thus determine whether the quality is qualified.

[0060] A method for using a crystallization roller kiln for processing microcrystalline glass is applied to the above-mentioned crystallization roller kiln for processing microcrystalline glass, comprising the following steps: sequentially docking a preheating kiln 101, a plurality of heating kilns 102 and a cooling kiln 103, docking a first connecting tube 5 and a second connecting tube 7; performing a pre-crystallization performance test on the roller kiln to determine whether the pre-crystallization performance is qualified:

[0061] Start the roller structure and detect the rotation speed of the roller 15 of the roller structure to determine whether the rotation speed is qualified: obtain the actual rotation speed of the roller 15 on the preheating kiln 101, the heating kiln 102 and the cooling kiln 103, and obtain the reference rotation speed stored in the database;

[0062] Get the speed evaluation coefficient based on the actual speed and the reference speed:

[0063] ;

[0064] In the formula, is the speed evaluation coefficient, is the actual speed of the roller 15 on the preheating kiln 101, i is the serial number of the heating kiln 102, n is the total number of the heating kilns 102, is the actual speed of the roller 15 on the i-th heating kiln 102, is the actual speed of the roller 15 on the cooling kiln 103, is the reference speed of the roller 15 on the preheating kiln 101, is the reference speed of the roller 15 on the i-th heating kiln 102, It is the reference speed of the roller 15 on the cooling kiln 103.

[0065] By analyzing the rotation speed of roller 15 one by one, we can avoid problems in the entire production process caused by abnormality of a certain kiln body, improve the uniformity and stability of the microcrystalline glass conveying process in the kiln body, and prevent the influence of speed fluctuation on the crystallization process. The use of separate kiln detection logic can accurately locate which section of the system needs to be repaired.

[0066] On the basis of stable rotation speed, the time and processing consistency required for preheating, crystallization, and cooling of microcrystalline glass in different process stages are ensured, which directly affects the crystallization quality. The calculation formula of the rotation speed evaluation coefficient, the reference rotation speed data, and the actual rotation speed data are stored in the database, and the production parameters can be optimized through the accumulation of historical data. The core of the rotation speed evaluation logic is to ensure the uniformity and stability of the entire process of microcrystalline glass from preheating to cooling, laying the foundation for improving the crystallization quality.

[0067] If the speed evaluation coefficient is greater than the speed evaluation threshold stored in the database, the speed is unqualified and a manual maintenance instruction is sent; if the speed evaluation coefficient is not greater than the speed evaluation threshold stored in the database, the speed is qualified and a no-load thermal performance test is performed to determine whether the thermal performance of the roller kiln is qualified:

[0068] The first heating wire 11 and the second heating wire 13 in the heating structure are energized, and the heating temperature data is obtained based on the temperature sensor 19 on the roller bracket 16 in the heating kiln 102; the temperature rise rate of the heating kiln 102 and the temperature distribution data of each heating setting time are obtained based on the heating temperature data; the parameterized temperature rise rate of the heating kiln 102 and the parameterized temperature distribution data of each heating setting time stored in the database are obtained; the first thermal performance evaluation coefficient is obtained based on the temperature rise rate, the temperature distribution data of each heating setting time, the parameterized temperature rise rate and the parameterized temperature distribution data of each heating setting time; if the first thermal performance evaluation coefficient is greater than the first thermal performance evaluation threshold stored in the database, the thermal performance is unqualified; if the first thermal performance evaluation coefficient is not greater than the first thermal performance evaluation threshold stored in the database, the heating kiln 102 is After the gas supply structure on the preheating kiln 101 is started, the preheating temperature data is obtained based on the temperature sensor 19 on the roller bracket 16 in the preheating kiln 101; the temperature distribution data of each preheating setting time of the preheating kiln 101 is obtained based on the heating temperature data; the actual time for the internal temperature of the heating kiln 102 to return to the set temperature after it is lowered after the gas supply structure is started is obtained; the parameterized temperature distribution data of each preheating setting time of the preheating kiln 101 and the parameterized time for the internal temperature of the heating kiln 102 to return to the set temperature after it is lowered set in the database are obtained; the second thermal performance evaluation coefficient is obtained; if the second thermal performance evaluation coefficient is greater than the second thermal performance evaluation threshold stored in the database, the thermal performance is unqualified; if the second thermal performance evaluation coefficient is not greater than the second thermal performance evaluation threshold stored in the database, the thermal performance of the roller kiln is qualified.

[0069] The thermal performance test can only be carried out if the speed assessment is qualified, that is, the mechanical operation of the system is stable. This ensures that the kiln heating system can provide a thermal environment that meets the crystallization process under stable operation.

[0070] The first stage focuses on the independent heating capacity of the heating kiln 102 to ensure the stability of the thermal performance of the core heating area. The second stage verifies the heat transfer efficiency between the preheating kiln 101 and the heating kiln 102 to ensure the dynamic balance of the temperature transfer process. Through distributed temperature sensors 19 and refined evaluation coefficients, the thermal performance of each area in the system can be accurately reflected to reduce missed detection and misjudgment. During the evaluation process, the linkage effect of the gas transmission structure and the thyristor adjustment function can be used to dynamically adjust the heat source supply according to the actual situation to improve the system operation efficiency.

[0071] By comparing with the parameter data stored in the database, a quantifiable difference analysis is formed to provide a reference for subsequent maintenance and system upgrades. The purpose of thermal performance testing is to ensure the uniformity and recovery of temperature distribution in the roller kiln, which directly affects the crystallization quality of microcrystalline glass and improves the final product qualification rate. In the thermal performance test, the heat recovery of the heating kiln 102 and the energy utilization efficiency of the preheating kiln are considered, which helps to reduce energy waste and gas emissions.

[0072] Through this logic, the system can confirm that the equipment status meets the process requirements after speed and thermal performance testing, ensuring the stability, high quality and environmental protection of the subsequent production process. This step-by-step evaluation method effectively reduces production risks while improving automation control capabilities and production efficiency.

[0073] In this embodiment, the method for obtaining the first thermal performance evaluation coefficient is as follows:

[0074] ;

[0075] In the formula, is the first thermal performance evaluation coefficient, j is the number of the heating setting time, m is the total number of heating setting times, is the temperature rise rate of the i-th heating kiln 102, To determine the temperature rise rate, is the temperature distribution data of the jth heating setting time of the i-th heating kiln 102, is the parameter temperature distribution data of the jth heating setting time of the heating kiln 102, for and Similarity function of , n is the total number of heating kilns.

[0076] The temperature rise rate is a key indicator of the thermal performance of the heating kiln 102, which directly reflects the system heating efficiency and heat source stability. By comparing the actual temperature rise rate with the reference value, it is possible to quickly determine whether the system has local overheating or insufficient heat source. The performance of the temperature distribution at different heating setting times affects the consistency of product crystallization. The introduction of the similarity function can quantify the temperature deviation at each time point to avoid overall misjudgment caused by a single data. The formula takes into account both the overall deviation of the temperature rise rate and the local consistency of the temperature distribution, and comprehensively evaluates the thermal performance from both the macro and micro levels.

[0077] The second thermal performance evaluation coefficient is obtained as follows:

[0078] ;

[0079] is the second thermal performance evaluation coefficient, b is the number of the preheating setting time, B is the total number of preheating setting times, The temperature distribution data of the b-th preheating setting time of the preheating kiln 101, The parameter temperature distribution data of the b-th preheating setting time of the preheating kiln 101, for and The similarity function of is the actual duration, For the duration of participation.

[0080] Thermal recovery time is an important parameter for evaluating the efficiency of gas transmission structure. It is calculated by ratio with reference time, which directly reflects the ability of heat transfer and system response. Each set time point of preheating kiln 101 is compared item by item to ensure that the transferred heat can be evenly distributed and effectively utilized. The formula not only takes into account the performance of a single device, but also integrates the heat energy transmission and interaction between heating kiln 102 and preheating kiln 101 to ensure the overall efficiency of the system. The formula is concise and targeted, which can not only quantify static performance and temperature distribution consistency, but also dynamically evaluate the thermal recovery speed.

[0081] The above similarity function can be calculated using Euclidean distance or cosine similarity.

[0082] If the thermal performance is unqualified, an early warning will be issued, and a manual maintenance instruction will be sent; if the thermal performance is qualified, the pre-crystallization performance will be determined to be qualified. If the pre-crystallization performance is unqualified, an early warning will be issued, and a manual maintenance instruction will be sent; if it is qualified, the crystallization of the microcrystalline glass will begin: the heating structure heats the interior of the heating kiln 102, and the gas transmission structure on the heating kiln 102 transmits the heat in the heating kiln 102 to the second connecting pipe 7 through the first connecting pipe 5, and the gas transmission structure on the preheating kiln 101 transmits the heat in the second connecting pipe 7 to the preheating kiln 101, and preheats the microcrystalline glass in the preheating kiln 101; the Raman spectrometer 23 on the first heating kiln 102 performs Raman spectroscopy analysis on the preheated microcrystalline glass to determine the heating atmosphere of the first heating kiln 102. , and delivers the required gas to the first heating kiln 102 through the atmosphere former 22; the laser rangefinder 24 on the first heating kiln 102 detects the surface flatness of the heated microcrystalline glass, and if it is detected that the flatness is unqualified, an early warning is sent and the position is marked; after passing through multiple heating kilns 102, the microcrystalline glass enters the cooling kiln 103, and the gas transmission structure on the cooling kiln 103 delivers external dry cold air into the cooling kiln 103 through the third connecting pipe 6 to cool the microcrystalline glass; the X-ray diffraction analyzer 25 on the cooling kiln 103 performs crystal analysis on the microcrystalline glass to determine whether the crystallization of the microcrystalline glass is qualified.

[0083] By evaluating the rotation speed and thermal performance before crystallization, it is ensured that the system has reached the expected state before starting the crystallization process. The heating structure in the heating kiln 102 provides heat through the first heating wire 11 and the second heating wire 13. The gas transmission structure transmits the heat of the heating kiln 102 to the second connecting pipe 7 through the first connecting pipe 5, and then transfers the heat to the preheating kiln 101 for preheating the microcrystalline glass.

[0084] The Raman spectrometer 23 in the first heating kiln 102 analyzes the atmosphere requirements of the microcrystalline glass and determines the chemical bonds and vibration characteristics. The atmosphere former 22 injects appropriate gases such as nitrogen or hydrogen to maintain the required crystallization atmosphere according to the detection results. The laser rangefinder 24 monitors the surface flatness of the microcrystalline glass in real time. If the flatness is unqualified, the specific location is marked and an early warning is sent for subsequent adjustment or processing.

[0085] The glass-ceramics are gradually heated through multiple heating kilns in sequence to ensure that the crystallization process is uniform and sufficient. The glass-ceramics enters the cooling kiln 103, and the dry cold air from the outside is sent into the cooling kiln 103 through the air transmission structure to control the cooling speed and prevent the generation of stress cracks. The cooled glass-ceramics are subjected to crystal analysis by an X-ray diffraction analyzer 25 to check the crystal phase distribution and the degree of crystallization to determine whether they meet the quality standards.

[0086] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0087] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A crystallization roller kiln for processing microcrystalline glass, comprising a kiln body (1), characterized in that: The kiln body (1) comprises a preheating kiln (101), a heating kiln (102) and a cooling kiln (103); the preheating kiln (101), the heating kiln (102) and the cooling kiln (103) are connected in sequence; and roller structures are arranged inside the preheating kiln (101), the heating kiln (102) and the cooling kiln (103); Ventilation holes (2) are provided on both sides of the preheating kiln (101), the heating kiln (102) and the cooling kiln (103); a gas collecting port (3) is provided at the bottom of the preheating kiln (101); and an exhaust port (4) is provided at the bottom of the cooling kiln (103); Gas delivery structures are installed at the corresponding ventilation openings (2) on both sides of the preheating kiln (101), the heating kiln (102) and the cooling kiln (103); the gas delivery structure on the heating kiln (102) is connected to the first connecting pipe (5), the gas delivery structure on the preheating kiln (101) is connected to the second connecting pipe (7), the gas delivery structure on the cooling kiln (103) is connected to the third connecting pipe (6), and the first connecting pipe (5) is connected to the second connecting pipe (7); A heating structure is installed inside the heating kiln (102); An atmosphere former (22) is fixedly connected to the top of the heating kiln (102); an air inlet end of the atmosphere former (22) is connected to an external gas delivery device; and an air outlet end of the atmosphere former (22) is fixedly passed through the top of the heating kiln (102); A Raman spectrometer (23) is connected to a side of the heating kiln (102) close to the preheating kiln (101), a laser rangefinder (24) is connected to a side of the heating kiln (102) away from the preheating kiln (101), and an X-ray diffraction analyzer (25) is connected to the outlet of the cooling kiln (103); Gas detectors (26) are fixedly connected to the surfaces of the first connecting tube (5) and the second connecting tube (7).

2. The crystallization roller kiln for processing glass-ceramics according to claim 1, characterized in that: The gas delivery structure comprises a gas delivery pipe (8), an electric fan (9) is installed at the air inlet of the gas delivery pipe (8), and the air inlet of the gas delivery pipe (8) is correspondingly connected to the ventilation port (2); The electric fan (9) installed at the ventilation opening (2) corresponding to the gas delivery pipe fitting (8) on the heating kiln (102) is a suction fan, the electric fan (9) installed at the ventilation opening (2) corresponding to the gas delivery pipe fitting (8) on the preheating kiln (101) is a blower, and the electric fan (9) installed at the ventilation opening (2) corresponding to the gas delivery pipe fitting (8) on the cooling kiln (103) is a blower; The gas outlet of the gas delivery pipe (8) on the heating kiln (102) is connected to the first connecting pipe (5), and the gas outlet of the gas delivery pipe (8) on the preheating kiln (101) is connected to the second connecting pipe (7).

3. A crystallization roller kiln for processing glass-ceramics according to claim 2, characterized in that: The heating structure comprises a first heat-conducting cover (10) and a first heating wire (11), wherein the first heating wire (11) is arranged inside the first heat-conducting cover (10), and the first heating wire (11) is connected to a power source via a thyristor; The heating structure further comprises a second heat-conducting cover (12) and a second heating wire (13), wherein the second heating wire (13) is arranged inside the second heat-conducting cover (12), the second heating wire (13) is connected to a relay (14) via a thyristor, and the relay (14) is connected to a power source; Two first heat-conducting covers (10) are provided in each of the heating kilns (102), the two first heat-conducting covers (10) are respectively fixed to the top and bottom of the heating kiln (102), and the second heat-conducting cover (12) is fixedly connected to the ventilation opening (2) of the heating kiln (102).

4. The crystallization roller kiln for processing glass-ceramics according to claim 3, characterized in that: The roller structure comprises a roller (15) and a roller bracket (16); the roller (15) is mounted on the surface of the roller bracket (16) via a connecting shaft; a driving motor (17) is connected to the surface of the preheating kiln (101), the heating kiln (102) and the cooling kiln (103); an output shaft of the driving motor (17) is connected to a transmission gear box (18), and the transmission gear box (18) is drivingly connected to the connecting shaft; A temperature sensor (19) is fixedly connected to the bottom of the roller bracket (16).

5. The crystallization roller kiln for processing glass-ceramics according to claim 2, characterized in that: The heating kilns (102) are provided with a plurality of them which are connected in sequence, the first connecting pipe (5) on the heating kiln (102) close to the preheating kiln (101) is connected to the second connecting pipe (7), the first connecting pipes (5) on two adjacent heating kilns (102) are connected to each other, one end of the first connecting pipe (5) on the heating kiln (102) connected to the cooling kiln (103) is closed, and the third connecting pipe (6) is close to the closure of the heating kiln (102); The first connecting tube (5) and the second connecting tube (7) as well as two adjacent first connecting tubes (5) are connected via a sleeve tube (20), a rubber ring (21) being fixedly connected to the interior of the sleeve tube (20), and an inner side wall of the rubber ring (21) being connected to the inner side walls of the first connecting tube (5) and the second connecting tube (7).

6. A method for using a crystallization roller kiln for processing microcrystalline glass, characterized in that: A crystallization roller kiln for processing glass-ceramics as claimed in any one of claims 1 to 5, comprising the following steps: The preheating kiln (101), the plurality of heating kilns (102) and the cooling kiln (103) are sequentially connected so that the first connecting pipe (5) and the second connecting pipe (7) are connected; Perform pre-crystallization performance test on the roller kiln to determine whether the pre-crystallization performance is qualified: If the performance before crystallization is unqualified, an early warning will be issued and a manual maintenance instruction will be sent; If qualified, the crystallization of glass-ceramics will begin: The heating structure heats the interior of the heating kiln (102), the gas transmission structure on the heating kiln (102) transmits the heat in the heating kiln (102) to the second connecting pipe (7) through the first connecting pipe (5), and the gas transmission structure on the preheating kiln (101) transmits the heat in the second connecting pipe (7) to the preheating kiln (101), thereby preheating the microcrystalline glass in the preheating kiln (101); The Raman spectrometer (23) on the first heating kiln (102) performs Raman spectroscopic analysis on the preheated micro-ceramic glass to determine the heating atmosphere of the first heating kiln (102), and delivers the required gas to the first heating kiln (102) through the atmosphere forming device (22); The laser rangefinder (24) on the first heating kiln (102) detects the surface flatness of the heated microcrystalline glass, and if it is detected that the flatness is unqualified, an early warning is sent and the position is marked; After passing through a plurality of heating kilns (102), the glass-ceramics enters a cooling kiln (103), and an air supply structure on the cooling kiln (103) delivers dry cold air from the outside into the cooling kiln (103) through a third connecting pipe (6) to cool the glass-ceramics; The X-ray diffraction analyzer (25) on the cooling kiln (103) performs crystal analysis on the microcrystalline glass to determine whether the crystallization of the microcrystalline glass is qualified.

7. The method for using a crystallization roller kiln for processing microcrystalline glass according to claim 6, characterized in that: Performing a pre-crystallization performance test on the roller kiln to determine whether the pre-crystallization performance is qualified includes the following steps: The roller structure is started, and the rotation speed of the roller (15) of the roller structure is detected to determine whether the rotation speed is qualified: Acquire the actual rotation speed of the rollers (15) on the preheating kiln (101), the heating kiln (102) and the cooling kiln (103), and simultaneously acquire the reference rotation speed stored in the database; Get the speed evaluation coefficient based on the actual speed and the reference speed: ； In the formula, is the speed evaluation coefficient, is the actual rotation speed of the roller (15) on the preheating kiln (101), i is the serial number of the heating kiln (102), n is the total number of the heating kilns (102), is the actual rotation speed of the roller (15) on the i-th heating kiln (102), is the actual rotation speed of the roller (15) on the cooling kiln (103), is the reference speed of the roller (15) on the preheating kiln (101), is the reference speed of the roller (15) on the i-th heating kiln (102), is the reference speed of the roller (15) on the cooling kiln (103); If the speed evaluation coefficient is greater than the speed evaluation threshold stored in the database, the speed is unqualified and a manual maintenance instruction is sent; If the speed evaluation coefficient is not greater than the speed evaluation threshold stored in the database, the speed is qualified and a no-load thermal performance test is performed to determine whether the thermal performance of the roller kiln is qualified: If the thermal performance is unqualified, an early warning will be issued and a manual maintenance instruction will be sent; If the thermal performance is qualified, the performance before crystallization is judged to be qualified.

8. The method for using a crystallization roller kiln for processing glass-ceramics according to claim 6, characterized in that: Judging whether the thermal performance of the roller kiln is qualified includes the following steps: The first heating wire (11) and the second heating wire (13) in the heating structure are energized, and heating temperature data is obtained based on a temperature sensor (19) on a roller support (16) in the heating kiln (102); Based on the heating temperature data, the temperature rise rate of the heating kiln (102) and the temperature distribution data of each heating setting time are obtained; Obtaining the parameterized temperature rise rate of the heating kiln (102) and the parameterized temperature distribution data of each heating setting time stored in the database; Obtaining a first thermal performance evaluation coefficient based on the temperature rise rate, the temperature distribution data of each heating setting time, and the parameterized temperature rise rate and the parameterized temperature distribution data of each heating setting time; If the first thermal performance evaluation coefficient is greater than the first thermal performance evaluation threshold stored in the database, the thermal performance is unqualified; If the first thermal performance evaluation coefficient is not greater than the first thermal performance evaluation threshold stored in the database, after the gas transmission structures on the heating kiln (102) and the preheating kiln (101) are started, preheating temperature data is obtained based on a temperature sensor (19) on a roller support (16) in the preheating kiln (101); Acquiring temperature distribution data of each preheating setting time of the preheating kiln (101) based on the heating temperature data; Obtaining the actual time it takes for the internal temperature of the heating kiln (102) to return to the set temperature after the gas transmission structure is started; Obtaining the parameterized temperature distribution data of each preheating setting time of the preheating kiln (101) set in the database and the parameterized time duration for the internal temperature of the heating kiln (102) to return to the setting temperature after being lowered; obtaining a second thermal performance evaluation coefficient; If the second thermal performance evaluation coefficient is greater than the second thermal performance evaluation threshold stored in the database, the thermal performance is unqualified; If the second thermal performance evaluation coefficient is not greater than the second thermal performance evaluation threshold stored in the database, the thermal performance of the roller kiln is qualified.

9. The method for using a crystallization roller kiln for processing glass-ceramics according to claim 8, characterized in that: The first thermal performance evaluation coefficient is obtained as follows: ； In the formula, is the first thermal performance evaluation coefficient, j is the number of the heating setting time, m is the total number of heating setting times, is the temperature rise rate of the i-th heating kiln (102), To determine the temperature rise rate, The temperature distribution data for the jth heating setting time of the i-th heating kiln (102), is the parameter temperature distribution data of the jth heating setting time of the heating kiln (102), for and Similarity function of , n is the total number of heating kilns; The second thermal performance evaluation coefficient is obtained as follows: ； is the second thermal performance evaluation coefficient, b is the number of the preheating setting time, B is the total number of preheating setting times, The temperature distribution data for the b-th preheating setting time of the preheating kiln (101), The parameter temperature distribution data for the bth preheating setting time of the preheating kiln (101), for and The similarity function of is the actual duration, For the duration of participation.

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