Electric charcoal mixing kiln for jun porcelain firing

Abstract

The utility model discloses an electric carbon mixing kiln for jun porcelain firing, which relates to the technical field of kiln equipment and comprises a kiln body, an accommodating cavity and a sealing door for sealing the accommodating cavity are arranged on the end face of one side of the kiln body, vent holes communicated with the accommodating cavity are formed in the top of the kiln body, and a channel communicated with the bottom of the accommodating cavity is formed in the kiln body. The sealing door is provided with an air inlet corresponding to the channel inlet; the electric heating elements are symmetrically arranged on the inner walls of the two sides of the containing cavity. The placing frame is placed in the containing cavity, the placing frame is sequentially provided with a first placing layer and a second placing layer from top to bottom, the first placing layer is used for placing ceramic to be fired, and the second placing layer is used for placing coke; the liquefied gas burner or the pneumatic conveyor is located on the outer side of the gas inlet and arranged oppositely. According to the electric and charcoal mixed kiln for jun porcelain firing, the problems that a firewood kiln is low in energy utilization efficiency and serious in air pollution are solved, the problem that an electric and charcoal mixed kiln is poor in kiln transmutation effect is solved, and the technical effect that the firing efficiency and quality of jun porcelain are improved is achieved.

Description

Technical Field

[0001] This utility model relates to the field of kiln equipment technology, and in particular to an electric charcoal mixing kiln for firing Jun porcelain. Background Technology

[0002] Jun porcelain, a gem among traditional Chinese handicrafts, is not only directly influenced by its firing techniques, which affect the quality and artistic value of ceramic products, but also serve as an important vehicle for inheriting and promoting Chinese ceramic culture. Traditional Jun porcelain firing techniques primarily use coke as fuel. While this fuel offers advantages such as stable combustion and uniform heat, the waste gases and residues produced during coke combustion have a serious negative impact on the environment. Furthermore, due to its long firing cycle and high energy consumption, this traditional technique can no longer meet the environmental protection and energy efficiency requirements of the modern ceramic industry, thus limiting the sustainable development of the Jun porcelain industry.

[0003] With increasing environmental awareness and adjustments to the energy structure, Jun porcelain firing technology is constantly being explored and innovated. New Jun porcelain firing technologies such as pure gas kilns and pure electric kilns are gradually being applied. Pure gas kilns utilize clean energy sources such as natural gas and liquefied petroleum gas as fuel, offering advantages such as high combustion efficiency and low pollution. However, gaseous fuels still produce a certain amount of pollutants during combustion, and their storage and transportation pose safety risks. On the other hand, pure electric kilns convert electrical energy into heat energy for firing, offering advantages such as environmental friendliness and ease of control. However, limited by the supply and conversion efficiency of electricity, their firing results are often unsatisfactory, and industry acceptance is low.

[0004] Therefore, how to provide an electric-carbon hybrid kiln for firing Jun porcelain that reduces environmental pollution, improves energy efficiency, and ensures the quality of Jun porcelain products is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide an electric-carbon hybrid kiln for firing Jun porcelain, which solves the technical problem of low energy utilization efficiency in existing kilns.

[0006] To achieve the above objectives, this utility model provides an electric charcoal mixing kiln for firing Jun porcelain, comprising:

[0007] The kiln body has a receiving cavity and a sealing door for sealing the receiving cavity on one end face. The top of the kiln body has an air vent that connects to the receiving cavity. The kiln body has a channel that connects to the bottom of the receiving cavity. The sealing door has an air inlet that corresponds to the inlet of the channel.

[0008] The heating elements are symmetrically arranged on both sides of the inner wall of the receiving cavity;

[0009] A placement rack is placed inside the receiving cavity. The placement rack has a first placement layer and a second placement layer arranged from top to bottom. The first placement layer is used to place ceramics to be fired, and the second placement layer is used to place coke.

[0010] A liquefied petroleum gas (LPG) burner or a pneumatic conveyor, wherein the LPG burner or the pneumatic conveyor is located outside the air inlet and is arranged opposite to it.

[0011] Preferably, the channel includes multiple vertical channels and horizontal channels, the first end of the multiple vertical channels is connected to the bottom of the receiving cavity, the second end of the multiple vertical channels is connected to the output end of the horizontal channel, and the input end of the horizontal channel is connected to the air inlet.

[0012] Preferably, the inner side of the sealing door is provided with a sealing element, which can fit tightly against the receiving cavity.

[0013] Preferably, the sealing door and the sealing member are provided with a through flame observation channel, and the flame observation channel is provided with heat-insulating glass.

[0014] Preferably, the sealed door has a handle on its outer side.

[0015] Preferably, the first placement layer is provided with ventilation openings.

[0016] Preferably, the inner wall of the accommodating cavity is provided with heat insulation components, and the side of the kiln body facing the sealing door is provided with heat insulation cotton.

[0017] Preferably, the heating element is a silicon carbide rod.

[0018] Preferably, the device further includes a temperature monitoring sensor and a controller. The temperature monitoring sensor is located inside the receiving cavity, and both the temperature monitoring sensor and the heating element are connected to the controller via a signal connection.

[0019] Preferably, the bottom of the kiln body is provided with a set of universal wheels.

[0020] Compared with the above-mentioned background technology, the electric charcoal mixing kiln for firing Jun porcelain provided by this utility model has the advantages of reasonable structure, simple operation, and stable and uniform heat. Moreover, the design of this kiln can not only improve the firing efficiency and quality of Jun porcelain, but also reduce energy consumption and environmental pollution, and has broad application prospects and market potential. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 An isometric view of an electric charcoal mixing kiln for firing Jun porcelain provided in this embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the kiln body structure provided in an embodiment of the present utility model;

[0024] Figure 3 This is a schematic diagram of the placement rack structure provided in an embodiment of the present utility model.

[0025] in:

[0026] 1-Kiln body, 2-Containing cavity, 3-Sealed door, 4-Heating element, 5-Placement rack;

[0027] 11-Ventilation hole, 12-Vertical channel, 13-Horizontal channel, 14-Insulation cotton;

[0028] 21- Thermal insulation components;

[0029] 31-Air inlet, 32-Sealing component, 33-Flame observation channel;

[0030] 51-First placement layer, 52-Second placement layer, 53-Ventilation port. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] See Figures 1-2This application provides an electric charcoal mixing kiln for firing Jun porcelain, comprising a kiln body 1, a receiving cavity 2 and a sealing door 3 for sealing the receiving cavity on one end face of the kiln body 1, an air vent 11 connecting the receiving cavity 2 on the top of the kiln body 1, a channel connecting the bottom of the receiving cavity 2 in the kiln body 1, and an air inlet 31 corresponding to the inlet of the channel inlet; electric heating elements 4, which are symmetrically arranged on both sides of the inner wall of the receiving cavity 2; a placement rack 5, which is placed in the receiving cavity 2, and the placement rack 5 has a first placement layer 51 and a second placement layer 52 arranged from top to bottom, the first placement layer 51 being used to place ceramics to be fired, and the second placement layer 52 being used to place coke; and a liquefied gas burner or a pneumatic conveyor, which is located outside the air inlet 31 and arranged opposite to it.

[0034] In other words, the kiln body 1 is constructed of high-temperature resistant materials to ensure structural stability under high-temperature firing conditions. A receiving cavity 2 is provided on one end face of the kiln body 1, which can be located in the middle. In order to prevent heat loss during the firing process, a sealing door 3 is provided on one side of the kiln body 1. At the same time, a venting hole 11 is provided on the top of the kiln body 1 to ensure that excess hot air and harmful gases are discharged during the firing process, and to ensure the uniformity of gas circulation and heat distribution inside the kiln.

[0035] More specifically, the ventilation holes 11 of this application remain open in the early stage of the firing process (i.e., when the temperature is below 700 degrees Celsius) to effectively remove the large amount of water vapor generated by the evaporation of wet blanks in the kiln. As the firing process progresses, when the temperature inside the kiln rises steadily to above 700 degrees Celsius, the ventilation holes 11 will be sealed by an automatic control system or manual intervention in order to better maintain the sealing and stability of the kiln atmosphere during the high-temperature firing stage.

[0036] The bottom of the kiln body 1 is provided with a channel that connects to the bottom of the receiving cavity 2. This channel is used to deliver the atmosphere required for reduction or the oxygen required for combustion into the receiving cavity 2. In order to cooperate with the channel, the sealing door 3 is also provided with an air inlet 31 corresponding to the inlet of the channel to ensure the effective input of the atmosphere or oxygen required for reduction.

[0037] To provide more stable and uniform heat, the heating elements 4 are symmetrically installed on both inner walls of the receiving cavity 2. A placement rack 5 is located inside the receiving cavity 2, and from top to bottom, it has a first placement layer 51 and a second placement layer 52. The first placement layer 51 is used to place the Jun porcelain to be fired, ensuring that it is heated evenly during firing. The second placement layer 52 is used to place coke. Notably, the second placement layer 52 is positioned at a certain height from the bottom of the receiving cavity 2.

[0038] It also includes a liquefied petroleum gas (LPG) burner or a pneumatic conveyor, both located outside the air inlet 31 and opposite to it. During the firing process, the LPG burner burns LPG to produce a high-temperature flame, which enters the containment chamber 2 through the air inlet 31. Since the LPG burner performs incomplete combustion, it primarily provides a reducing atmosphere. The pneumatic conveyor, on the other hand, delivers gas through the air inlet 31 into the containment chamber 2, providing the necessary oxygen for coke combustion. The combustion state of the coke is controlled by adjusting the operating power of the LPG burner or the pneumatic conveyor.

[0039] Work process:

[0040] Preparation stage: Carefully place the Jun porcelain pieces to be fired on the first layer 51, ensuring adequate spacing between each piece for even heating. Place a certain amount of coke on the second layer 52. The quantity and quality of the coke should be matched according to the size and shape of the Jun porcelain and the expected firing effect.

[0041] Electric heating:

[0042] The electric heating element 4 is activated to provide stable heat to the kiln interior, serving as the primary heat source. The heating power and time of the electric heating element 4 need to be precisely controlled according to the firing curve to ensure that the Jun porcelain is heated evenly and stably.

[0043] Oxidation period (kiln temperature up to 950℃)

[0044] It removes the moisture absorbed during glazing of the clay body and the moisture contained in the materials in the glaze layer, while also causing the organic matter in the glaze to oxidize and volatilize.

[0045] Reduction period (950℃-1250℃)

[0046] Because the coke is placed in the kiln before startup, it is ignited and burned after reaching its combustion point as the temperature rises. Increasing the power of the liquefied gas burner or reducing the working power of the pneumatic conveyor ensures incomplete combustion of the coke. This allows the coke to provide a reducing atmosphere, and the carbon monoxide produced by incomplete combustion enters the porous body and glaze, reducing the iron and copper it contains, resulting in the desired color. During this stage, the body begins to sinter and vitrify, greatly increasing its strength; the glaze begins to melt into a glassy state, gradually forming a smooth glaze surface on the body.

[0047] Cooling and removal:

[0048] After firing, the temperature inside the kiln should be gradually reduced to avoid cracking or deformation of the Jun porcelain due to rapid cooling. Once the temperature has dropped to a safe range, open the sealed door 3 and remove the fired Jun porcelain.

[0049] In summary, the electric charcoal mixed kiln for Jun porcelain firing provided in this application combines the advantages of traditional charcoal firing with modern electric heating technology. It has the advantages of reasonable structure, simple operation, and stable and uniform heat. Moreover, the design of this kiln can not only improve the firing efficiency and quality of Jun porcelain, but also reduce energy consumption and environmental pollution, and has broad application prospects and market potential.

[0050] See Figures 1-2 The channel includes multiple vertical channels 12 and horizontal channels 13. The first end of the multiple vertical channels 12 is connected to the bottom of the receiving cavity 2, and the second end of the multiple vertical channels 12 is connected to the output end of the horizontal channel 13. The input end of the horizontal channel 13 is connected to the air inlet 31.

[0051] In other words, multiple vertical channels 12 extend downward from the bottom of the receiving cavity 2, and the bottom ends of multiple vertical channels 12 are connected to the output end of the horizontal channel 13, while the input end of the horizontal channel 13 is connected to the air inlet 31.

[0052] When air or high-temperature heat is introduced from the air inlet 31, it first enters the input end of the horizontal channel 13, and is then distributed to each vertical channel 12, and finally flows into the receiving cavity 2 through the upper end of the vertical channel 12.

[0053] See Figure 3 The first layer 51 is equipped with ventilation openings 53 to facilitate the combustion of coke.

[0054] See Figure 1 The sealing door 3 has a sealing element 32 on its inner side, which can fit tightly against the receiving cavity 2. That is, when the sealing door 3 is closed, the sealing element 32 will fit tightly against the corresponding position of the receiving cavity 2 under pressure or mechanical force. In order to ensure the tightness of the fit, the sealing element 32 is designed according to the shape and size of the receiving cavity 2 to ensure a perfect match between the two.

[0055] See Figure 1 The sealing door 3 and the sealing component 32 are provided with a through flame observation channel 33, and the flame observation channel 33 is provided with heat-insulating glass.

[0056] In other words, the flame observation channel 33 allows operators to observe the flame situation inside the containment cavity 2 even when the sealed door 3 is closed. This ensures that operators can perform safe monitoring and operation without direct contact with high temperatures or hazardous environments. Through the flame observation channel 33, operators can observe the flame status in real time, allowing for timely reactions and adjustments.

[0057] The flame observation passage 33 runs through the sealed door 3 and the sealing element 32, ensuring that the line of sight is not obstructed. The use of heat-insulating glass can effectively block the heat generated by the flame and prevent the heat from being transferred to the observation area, ensuring the safety of the operators. Considering that the flame observation passage 33 needs to face the high temperature environment for a long time, the heat-insulating glass needs to have high high temperature resistance.

[0058] The inner wall of the cavity 2 is provided with heat insulation component 21, the side of the kiln body 1 facing the sealing door 3 is provided with heat insulation cotton 14, and the outer side of the kiln body 1 is provided with heat insulation cotton.

[0059] Specifically, the main function of the thermal insulation component 21 is to reduce heat exchange between the interior of the kiln body 1 and the outside environment, thereby maintaining the stability of the kiln temperature. The thermal insulation component 21 is typically made of materials with high thermal insulation performance, such as ceramic fiber and aluminosilicate fiber. The thermal insulation component 21 is usually laid tightly against the inner wall of the receiving cavity 2 to ensure that heat is not lost through the kiln wall. Thermal insulation cotton 14 is installed on the side of the kiln body 1 facing the sealing door 3, which can effectively reduce heat loss to the outside environment through the sealing door 3. Thermal insulation cotton 14 is typically made of lightweight, high-temperature resistant, and high-insulation materials, such as glass fiber and rock wool. The main purpose of installing thermal insulation cotton on the outer surface of the kiln body 1 is to reduce heat loss to the external environment through the kiln wall, thereby reducing energy consumption and improving the thermal efficiency of the kiln body 1. Thermal insulation cotton typically covers the entire outer surface of the kiln body 1, including the top, bottom, and sides.

[0060] It also includes a temperature monitoring sensor and a controller. The temperature monitoring sensor is located inside the cavity, and both the temperature monitoring sensor and the heating element 4 are connected to the controller via signal.

[0061] In other words, temperature monitoring sensors are installed inside the receiving cavity 2 to ensure accurate reflection of the temperature conditions in different areas of the kiln. Depending on specific needs, multiple temperature monitoring sensors can be installed inside the kiln to obtain more comprehensive temperature data. Considering factors such as the kiln's operating temperature range, accuracy requirements, and corrosion resistance, the temperature monitoring sensors include thermocouples and resistance thermometers. The controller is the core component of the kiln temperature control system; it receives signals from the temperature monitoring sensors and adjusts the heating element 4 according to a preset temperature control program, thereby achieving precise control of the temperature inside the kiln.

[0062] Both the temperature monitoring sensor and the heating element 4 are connected to the controller. The temperature monitoring sensor sends real-time temperature data to the controller, which uses this data to determine whether the heating power of the heating element needs to be adjusted. Simultaneously, the controller can display the temperature data and other relevant information on the operating interface for easy monitoring and adjustment by the operator.

[0063] More specifically, the heating element 4 is a silicon carbide rod, and the pneumatic conveyor is a blower or a hair dryer.

[0064] In some embodiments, the bottom of the kiln body 1 is symmetrically provided with caster wheels, and the liquefied gas burner is located on the outside of the kiln body 1, which facilitates the movement of the kiln body 1 and improves the ease of movement. The wheels are usually made of wear-resistant and pressure-resistant materials to ensure that they can maintain good performance during long-term use. The caster wheel assembly is also equipped with a locking device, which can lock the wheels when needed to prevent the kiln body from moving or sliding.

[0065] In some embodiments, the sealing door 3 is hinged to the kiln body 1 and is provided with a locking device, and a handle is provided on the outside of the sealing door 3.

[0066] In other words, the sealing door 3 is connected to the kiln body 1 by a hinge. This allows the sealing door 3 to be opened and closed on one side of the kiln body 1. To ensure that the sealing door 3 fits tightly against the kiln body 1 when closed and to guarantee the airtightness of the kiln body 1, the sealing door 3 is equipped with a locking device to provide locking force. The outer side of the sealing door 3 is equipped with a handle so that the operator can easily open and close the sealing door 3.

[0067] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0068] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An electric charcoal mixing kiln for firing Jun porcelain, characterized in that, include: The kiln body (1) has a receiving cavity (2) and a sealing door (3) for sealing the receiving cavity on one side end face. The top of the kiln body (1) has an air vent (11) that connects to the receiving cavity (2). The kiln body (1) has a channel that connects to the bottom of the receiving cavity (2). The sealing door (3) has an air inlet (31) that corresponds to the inlet of the channel. The heating element (4) is symmetrically arranged on both sides of the inner wall of the receiving cavity (2); Placement rack (5), the placement rack (5) is placed in the receiving cavity (2), the placement rack (5) is provided with a first placement layer (51) and a second placement layer (52) from top to bottom, the first placement layer (51) is used to place ceramics to be fired, and the second placement layer (52) is used to place coke; A liquefied gas burner or a pneumatic conveyor, wherein the liquefied gas burner or the pneumatic conveyor is located outside the air inlet (31) and is arranged opposite to it.

2. The electric charcoal mixing kiln for firing Jun porcelain according to claim 1, characterized in that, The channel includes multiple vertical channels (12) and horizontal channels (13). The first end of the multiple vertical channels (12) is connected to the bottom of the receiving cavity (2), and the second end of the multiple vertical channels (12) is connected to the output end of the horizontal channel (13). The input end of the horizontal channel (13) is connected to the air inlet (31).

3. The electric charcoal mixing kiln for firing Jun porcelain according to claim 2, characterized in that, The sealing door (3) is provided with a sealing element (32) on the inner side, and the sealing element (32) can fit tightly with the receiving cavity (2).

4. The electric charcoal mixing kiln for firing Jun porcelain according to claim 3, characterized in that, The sealing door (3) and the sealing member (32) are provided with a through flame observation channel (33), and the flame observation channel (33) is provided with heat-insulating glass.

5. The electric charcoal mixing kiln for firing Jun porcelain according to claim 4, characterized in that, The sealed door (3) has a handle on its outer side.

6. The electric charcoal mixing kiln for firing Jun porcelain according to claim 1, characterized in that, The first placement layer (51) is provided with ventilation openings (53).

7. The electric charcoal mixing kiln for firing Jun porcelain according to claim 1, characterized in that, The inner wall of the cavity (2) is provided with heat insulation component (21), and the side end of the kiln body (1) facing the sealing door (3) is provided with heat insulation cotton (14).

8. The electric charcoal mixing kiln for firing Jun porcelain according to claim 1, characterized in that, The heating element (4) is a silicon carbide rod.

9. The electric charcoal mixing kiln for firing Jun porcelain according to claim 1, characterized in that, It also includes a temperature monitoring sensor and a controller. The temperature monitoring sensor is located inside the receiving cavity, and both the temperature monitoring sensor and the heating element are connected to the controller via a signal connection.

10. The electric charcoal mixing kiln for firing Jun porcelain according to claim 1, characterized in that, The bottom of the kiln body (1) is equipped with a set of universal wheels.

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