Electric heating kiln for foaming ceramic firing
The electric heating kiln uses electric heating plates and power mechanisms to drive the electric heating cassette movement, which solves the problems of gas combustion pollution and high energy consumption, and realizes an efficient and environmentally friendly foaming ceramic firing process, reducing production costs and energy consumption.
Patent Information
- Application Number
- CN202421167158.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-27
AI Technical Summary
During the firing process of existing foamed ceramic plates, gas combustion produces a large amount of carbon dioxide and nitrogen oxides to pollute the environment, heat dissipation causes high energy consumption, and kiln tools require long-term preheating to reduce production efficiency.
Design an electric heater for foaming ceramic firing. The electric heater is driven to move along the length of the kiln by electric heating plates and power mechanisms, and power is supplied through the power supply rail and heated with electricity, reducing heat waste and pollutant emissions, and improving energy utilization efficiency.
It achieves no exhaust gas emissions, reduces energy consumption and production costs, improves the thermal efficiency and working efficiency of the kiln, and reduces the heat demand of the kiln tool.
Smart Images
Figure CN222317655U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of foamed ceramic production, and in particular to an electric heating kiln for firing foamed ceramics. Background Art
[0002] Foamed ceramic insulation board is made of solid waste and other raw materials through high-temperature firing. It is a new type of environmentally friendly building material and has been widely used in the fields of construction and decoration.
[0003] Existing foamed ceramic panels are usually fired in a gas tunnel kiln or a gas roller kiln. The raw materials are placed in a sagger and are sequentially subjected to preheating, heating, constant temperature, rapid cooling, slow cooling and other sections before finally being fired and formed.
[0004] At present, the sintering temperature of foamed ceramic plates is as high as 1200℃. A large amount of gas is consumed during the firing process, which results in high energy consumption. In addition, a large amount of carbon dioxide and nitrogen oxides are produced during the combustion of gas. These flue gases not only pollute the environment when discharged, but also cause a large amount of heat dissipation and waste. In addition, the sagger needs to be preheated for a long time in the kiln, which reduces production efficiency.
[0005] In view of the above problems, an electric heating kiln for firing foamed ceramics is now designed. Utility Model Content
[0006] The embodiment of the present application provides an electric kiln for firing foamed ceramics to solve the problem in the related art that a large amount of carbon dioxide gas and nitrogen oxides are generated during the combustion of gas, which not only pollutes the environment, but also causes waste of heat dissipation. At the same time, the sagger needs to be preheated for a long time in the kiln, thereby reducing the production efficiency.
[0007] In a first aspect, an electric heating kiln for firing foamed ceramics is provided, comprising:
[0008] The invention comprises: a kiln and an electric heating sagger for accommodating foamed ceramic materials, wherein a plurality of electric heating plates are arranged inside the kiln, a hollow chamber for accommodating the electric heating sagger is opened inside the kiln, a plurality of power supply rails are arranged relatively inside the hollow chamber, the power supply rails are used to supply power to the electric heating sagger, and a power mechanism is arranged on the kiln, and the power mechanism is used to drive the electric heating sagger to move along the length direction of the kiln.
[0009] In some embodiments, the kiln includes a kiln shell, a refractory insulation layer is arranged inside the kiln shell, and the hollow chamber is provided with a preheating section, a high temperature section and a firing section in sequence along the length of the kiln shell;
[0010] The electric heating plate is located inside the high temperature section.
[0011] In some embodiments, a heat reflecting plate is disposed inside the hollow chamber and is located above the electric heating plate.
[0012] In some embodiments, the electric heating sagger includes a sagger frame, and a plurality of resistance heating plates are embedded in the sagger frame;
[0013] A plurality of power receiving contacts are arranged on the sagger frame, one end of the power receiving contact is in contact with the power supply rail, and the other end of the power receiving contact is connected to the resistance heating plate and is used to transmit the electric energy obtained from the power supply rail to the resistance heating plate.
[0014] In some embodiments, a plurality of power supply contacts are arranged above the kiln frame, the power supply contacts are in contact with adjacent power receiving contacts, a groove matching the power supply contacts is opened at the bottom of the kiln frame, and the bottom end of the power supply contact extends into the groove.
[0015] In some embodiments, the power mechanism includes a plurality of rollers, a plurality of three-axis commutators, a group of two-axis commutators, a reducer and a drive motor. A plurality of the rollers are arranged to rotate relative to each other at the bottom of the hollow chamber, a group of two-axis commutators are relatively arranged on the kiln, one end of a group of two-axis commutators is respectively connected to the reducer output shaft, the drive motor output shaft is connected to the reducer input shaft, a plurality of the three-axis commutators are relatively arranged along the length of the kiln, the three-axis commutator is located above the two-axis commutator, one output end of the three-axis commutator passes through the kiln and is connected to the corresponding roller, the output ends of two adjacent three-axis commutators are connected to each other, and one output end of the front three-axis commutator is connected to the other output end of the adjacent two-axis commutator.
[0016] In some embodiments, an electric control box is further included, wherein the electric control box is disposed on the kiln, the drive motor is electrically connected to the electric control box, and the power supply rail is electrically connected to the electric control box.
[0017] The embodiment of the present application provides an electric kiln for firing foamed ceramics. Through the kiln, electric heating sagger, electric heating plate, hollow chamber, power supply rail and power mechanism, the foamed ceramic material can be preheated during the feeding process of the electric heating sagger, thereby reducing the heat required to heat the kiln car and its attached refractory materials and kiln tools, achieving higher energy utilization efficiency and effectively improving work efficiency.
[0018] Moreover, electric energy is used for heating during the entire firing process, and no exhaust gas or pollutants are generated, which reduces energy consumption and emission pollution, improves the thermal efficiency of the kiln, eliminates the kiln car and gas combustion system, and reduces the construction cost and production cost of the firing kiln. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0020] Figure 1 A front cross-sectional view provided for an embodiment of the present application;
[0021] Figure 2 A schematic diagram of a three-dimensional structure provided in an embodiment of the present application;
[0022] Figure 3 A schematic diagram of the three-dimensional structure of the electric heating sagger provided in an embodiment of the present application;
[0023] Figure 4 This is a front cross-sectional view of the electric heating sagger provided in an embodiment of the present application.
[0024] In the figure: 01, kiln; 02, refractory insulation layer; 03, heat reflecting plate; 04, electric heating plate; 05, hollow chamber; 06, power supply contact; 07, electric heating sagger; 08, power receiving contact; 09, power supply rail; 10, sagger frame; 11, resistance heating plate; 12, roller; 13, two-axis commutator; 14, three-axis commutator; 15, drive motor; 16, electric control box; 17, reducer; 18, power mechanism. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0026] The embodiment of the present application provides an electric kiln for firing foamed ceramics, which can solve the problem in the related art that a large amount of carbon dioxide gas and nitrogen oxides will be generated during the combustion of gas, which not only pollutes the environment, but also causes waste of heat dissipation. At the same time, the sagger needs to be preheated for a long time in the kiln, thereby reducing production efficiency.
[0027] See also Figure 1-Figure 3An electric kiln for firing foamed ceramics comprises: a kiln 01 and an electric heating sagger 07 for accommodating foamed ceramic materials, a plurality of electric heating plates 04 are arranged inside the kiln 01, a hollow chamber 05 for accommodating the electric heating sagger 07 is opened inside the kiln 01, a plurality of power supply rails 09 are relatively arranged inside the hollow chamber 05, the power supply rails 09 are used to supply power to the electric heating sagger 07, a power mechanism 18 is arranged on the kiln 01, and the power mechanism 18 is used to drive the electric heating sagger 07 to move along the length direction of the kiln 01.
[0028] In actual use, the electric heating sagger 07 is powered by the power supply rail 09, and the foamed ceramic material inside the electric heating sagger 07 is preheated. The electric heating sagger 07 is driven to move forward in the hollow chamber 05 by the power mechanism 18. As the electric heating sagger 07 continuously moves forward, the foamed ceramic material is heated to the preheating temperature required by the process. Subsequently, the electric heating plate 4 inside the kiln heats the electric heating sagger 07 and the foamed ceramic material at high temperature, and the sagger is fired and formed before being taken out of the kiln.
[0029] The foamed ceramic material can be preheated during the feeding process of the electric heating sagger, which reduces the heat required for heating the kiln car and its attached refractory materials and kiln furniture, making energy utilization more efficient and further improving work efficiency. At the same time, the electric heating saggers 07 can be stacked, making the kiln 01 compact and the construction cost lower;
[0030] In addition, electric energy is used for heating during the entire firing process, and no exhaust gas or pollutants are generated, which reduces energy consumption and emission pollution and improves the thermal efficiency of the kiln.
[0031] Specifically, Figure 1 As shown, in this embodiment, the kiln 01 includes a kiln shell, a refractory insulation layer 02 is arranged inside the kiln shell, the hollow chamber 05 is located inside the refractory insulation layer 02, and the hollow chamber 05 is provided with a preheating section, a high temperature section and a firing section in sequence along the length of the kiln shell; the electric heating plate 04 is located inside the high temperature section.
[0032] In actual operation, after the foamed ceramic material preheated by the electric heating sagger 07 moves to the high temperature section, the electric heating sagger 07 and the foamed ceramic material are heated by the electric heating plate 4, and the foamed ceramic material is sintered at high temperature. After sintering and forming, it is transmitted to the firing section by the power mechanism 18 for cooling until the finished product leaves the kiln and enters the next processing step.
[0033] It should be noted that the electric heating plate 4 is an electric heating tube or an electric heating wire.
[0034] It should be noted that the refractory insulation layer 02 is formed by sequentially laying corundum mullite refractory insulation materials. When laying the refractory insulation materials, a hollow chamber 05 is formed in the middle of the kiln 01 by pre-hollowing out the chamber. This design can reduce heat dissipation during the heating process.
[0035] Preferably, Figure 1 As shown, in this embodiment, a heat reflecting plate 03 located above the electric heating plate 04 is arranged inside the hollow chamber 05 .
[0036] The heat reflection plate 03 reflects the heat radiation generated by the electric heating sagger 07 and the electric heating plate 04 to the foamed ceramic material on the electric heating sagger 07, thereby effectively reducing the heat energy loss caused by the diffusion of heat radiation.
[0037] The heat reflection plate 03 is a high temperature resistant metal plate or a high temperature resistant metal reflection film, which is laid on the inner wall of the hollow chamber to achieve heat radiation reflection.
[0038] As a preferred embodiment, Figure 2 and Figure 3 As shown, the electric heating sagger 07 in this embodiment includes a sagger frame 10, and a plurality of resistive heating plates 11 are embedded in the sagger frame 10; a plurality of power receiving contacts 08 are arranged on the sagger frame 10, one end of the power receiving contact 08 is in contact with the power supply rail 09, and the other end of the power receiving contact 08 is connected to the resistive heating plate 11, and is used to transmit the electric energy obtained from the power supply rail 09 to the resistive heating plate 11.
[0039] In actual use, the power receiving contact 08 contacts the power supply rail 09 , so that the resistance heating plate 11 is powered by the power supply rail 09 , and the resistance heating plate 11 converts electrical energy into thermal energy to preheat the ceramic foam material inside the electric heating sagger 07 .
[0040] The number of the power supply rails 9 in this embodiment is four, and four mounting grooves are relatively opened inside the hollow chamber 05, and the four power supply rails are arranged inside the corresponding mounting grooves.
[0041] Through this design method, the electric heating saggers 07 can be stacked in double layers, the power receiving contacts 08 are in contact with the corresponding power supply rails 09, and the bottom of the upper electric heating sagger 07 also heats the top of the next electric heating sagger 07 when it is heated. When the stacked electric heating saggers 07 move forward in a queue state, the electric heating saggers 07 are more compact, so that the thermal efficiency of the electric heating saggers 07 is better, the heat dissipation in the heating process is reduced, and at the same time, the kiln space is reduced, and the product firing efficiency is improved.
[0042] As a preferred embodiment, a plurality of power supply contacts 06 are arranged above the sagger frame 10 in this embodiment, and the power supply contacts 06 are in contact with the adjacent power receiving contacts 08. A groove matching the power supply contacts 06 is opened at the bottom of the sagger frame 10, and the bottom end of the power supply contact 06 extends into the inside of the groove.
[0043] In actual use, when the sagger frames 10 are chopped and stacked, the power supply contacts 06 of the lower sagger frames 10 extend into the upper groove, so that the upper and lower adjacent power supply contacts 06 are in contact with each other. After the power supply rail 09 transmits electric energy to the bottom sagger frame 10 through the power receiving contact 08, the electric energy is transmitted to the upper sagger frame 10 through the power supply contact 06, thereby achieving a multi-layer electric heating sagger 07 stacking arrangement, while reducing the arrangement and installation of the power supply rail 09, saving construction costs.
[0044] Specifically, the sagger frame 10 in this embodiment includes two high-temperature resistant blocks and a metal plate. The metal plate is arranged between the two high-temperature resistant blocks. A number of resistance heating plates 11 are arranged at the bottom and around the metal plate. The resistance heating plates 11 are arranged on the surface of the metal plate or embedded in the interior of the metal plate. The high-temperature resistant block is made of a hard heat-insulating refractory material with a high temperature resistance of more than 1400 degrees. The high-temperature resistant block is a corundum mullite block, a silica glass fiber block or a graphite block. The power receiving contact 08 is located inside the high-temperature resistant block, and the metal plate can be a high-temperature resistant 310S stainless steel plate.
[0045] It should be further explained that the metal plate can be in the shape of a flat plate or a box, and is used to contain the powdered foamed ceramic plate raw material, while also playing the role of wear resistance and heat uniformity.
[0046] The resistance heating plate 11 in this embodiment is a resistance wire, a high-temperature electric heating tube, a high-temperature electric heating rod or a ceramic heating plate.
[0047] Further, such as Figure 1 and Figure 2 As shown, the power mechanism 18 in this embodiment includes a plurality of rollers 12, a plurality of three-axis commutators 14, a group of two-axis commutators 13, a reducer 17 and a drive motor 15, a plurality of the rollers 12 are relatively rotatably arranged at the bottom of the hollow chamber 05, a group of two-axis commutators 13 are relatively arranged on the kiln 01, one opposite end of a group of two-axis commutators 13 are respectively connected to the output shaft of the reducer 17, the output shaft of the drive motor 15 is connected to the input shaft of the reducer 17, a plurality of the three-axis commutators 14 are relatively arranged along the length of the kiln 01, the three-axis commutator 14 is located above the two-axis commutator 13, one output end of the three-axis commutator 14 passes through the kiln 01 and is connected to the corresponding roller 12, the output ends of two adjacent three-axis commutators 14 are connected to each other, and one output end of the front three-axis commutator 14 is connected to the other output end of the adjacent two-axis commutator 13.
[0048] In actual use, the drive motor 15 is turned on, and the drive motor 15 drives the output shaft of the reducer 17 and one output shaft of the two-axis commutator 13 to rotate. By changing the power transmission direction of the two-axis commutator 13, the other output shaft of the two-axis commutator 13 drives one output shaft of the three-axis commutator 14 to rotate. Based on the same principle, the three-axis commutator 14 changes the power transmission direction so that the other two output shafts of the three-axis commutator 14 rotate. Since one output shaft between two adjacent three-axis commutators 14 is connected to each other, the output shafts of several three-axis commutators 14 connected to the roller rods 12 rotate at the same time, thereby driving several roller rods 12 to rotate at the same time, and driving the electric heating sagger 07 to move forward inside the hollow chamber 05.
[0049] It should be noted that the present embodiment also includes an electric control box 16 , which is disposed on the kiln 01 , the drive motor 15 is electrically connected to the electric control box 16 , and the power supply rail 09 is electrically connected to the electric control box 16 .
[0050] During use, the power supply rail 09 is electrically connected to the electric control box 16, and the voltage or current of the electric heating sagger 07 is adjusted by the electric control box 16; similarly, the drive motor 15 is electrically connected to the electric control box 16, and the start and stop of the drive motor 15 is controlled by the electric control box 16.
[0051] It should be noted that in actual use, multiple power supply rails 09 can be installed to increase the current passing capacity.
[0052] As a preferred embodiment, the power supply rail 09 in this embodiment can be set to multiple sections, and each section of the power supply rail 09 is electrically connected to the electrical control box 16 separately, so that the power supply voltage and current of each section of the power supply rail 09 can be independently adjusted by the electrical control box, and the temperature control of the electric heating sagger 07 can be achieved by adjusting the voltage or current.
[0053] Preferably, a temperature sensor is installed inside the hollow chamber 05 in this embodiment, and the temperature sensor is electrically connected to the electric control box 16, so that the temperature inside the kiln can be monitored through the temperature sensor.
[0054] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0055] It should be noted that, in this application, relational terms such as "first" and "second" 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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.
[0056] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.
Claims
1. An electric heating kiln for firing foamed ceramics, characterized in that: include: A kiln (01) and an electric heating sagger (07) for accommodating foamed ceramic materials, wherein a plurality of electric heating plates (04) are arranged inside the kiln (01), a hollow chamber (05) for accommodating the electric heating sagger (07) is opened inside the kiln (01), a plurality of power supply rails (09) are arranged relatively inside the hollow chamber (05), the power supply rails (09) are used to supply power to the electric heating sagger (07), and a power mechanism (18) is arranged on the kiln (01), and the power mechanism (18) is used to drive the electric heating sagger (07) to move along the length direction of the kiln (01).
2. An electric heating kiln for firing foamed ceramics as claimed in claim 1, characterized in that: The kiln (01) comprises a kiln shell, a refractory heat-insulating layer (02) is arranged inside the kiln shell, and the hollow chamber (05) is provided with a preheating section, a high-temperature section and a firing section in sequence along the length of the kiln shell; The electric heating plate (04) is located inside the high temperature section.
3. An electric heating kiln for firing foamed ceramics as claimed in claim 2, characterized in that: A heat reflection plate (03) located above the electric heating plate (04) is arranged inside the hollow chamber (05).
4. The electric heating kiln for firing foamed ceramics according to claim 1, characterized in that: The electric heating sagger (07) comprises a sagger frame (10), and a plurality of resistance heating plates (11) are embedded in the sagger frame (10); A plurality of power receiving contacts (08) are provided on the sagger frame (10), one end of the power receiving contact (08) is in contact with the power supply rail (09), and the other end of the power receiving contact (08) is connected to the resistance heating plate (11), and is used to transmit the electric energy obtained from the power supply rail (09) to the resistance heating plate (11).
5. An electric heating kiln for firing foamed ceramics as claimed in claim 4, characterized in that: A plurality of power supply contacts (06) are arranged above the sagger frame (10), and the power supply contacts (06) are in contact with the adjacent power receiving contacts (08). A groove matching the power supply contacts (06) is provided at the bottom of the sagger frame (10), and the bottom end of the power supply contact (06) extends into the inside of the groove.
6. The electric heating kiln for firing foamed ceramics according to claim 1, characterized in that: The power mechanism (18) comprises a plurality of rollers (12), a plurality of three-axis commutators (14), a group of two-axis commutators (13), a reducer (17) and a drive motor (15); the plurality of rollers (12) are arranged at the bottom of the hollow chamber (05) for relative rotation; a group of two-axis commutators (13) are arranged relatively on the kiln (01); opposite ends of a group of two-axis commutators (13) are respectively connected to the output shaft of the reducer (17); the output shaft of the drive motor (15) is connected to the output shaft of the reducer The three-axis commutators (14) are connected to the input shaft of the speed reducer (17), and a plurality of the three-axis commutators (14) are arranged opposite to each other along the length of the kiln (01). The three-axis commutators (14) are located above the two-axis commutators (13). An output end of the three-axis commutator (14) passes through the kiln (01) and is connected to the corresponding roller (12). The output ends of two adjacent three-axis commutators (14) are connected to each other, and an output end of the front three-axis commutator (14) is connected to the other output end of the adjacent two-axis commutator (13).
7. An electric heating kiln for firing foamed ceramics as claimed in claim 6, characterized in that: It also includes an electric control box (16), which is arranged on the kiln (01), the drive motor (15) is electrically connected to the electric control box (16), and the power supply rail (09) is electrically connected to the electric control box (16).