Roller kiln capable of generating firewood burning atmosphere

Abstract

The invention discloses a roller kiln capable of generating a firewood burning atmosphere, and belongs to the field of roller kilns. A roller kiln capable of generating firewood burning atmosphere comprises a roller kiln body, a material conveying roller way penetrating through the interior of the roller kiln body, a carrier plate installed at the position of a kiln head of the roller kiln body, and a roller installed between an end plate and a second end plate on the top of the inner side of the kiln head of the roller kiln body and arranged below the carrier plate. The roller is in meshed connection with the output end of a second motor on the outer side of the carrier plate through a tooth groove in the outer end of the roller and a gear, a plurality of evenly-arranged meshes are formed in the bottom of the roller, a plug is arranged at the opening end of the roller, air distribution boxes are arranged on the two sides in the roller kiln head, and air guide pipes communicated with a roller kiln high-temperature area are arranged at the outer ends of the air distribution boxes. Through the rotating roller and the meshes formed in the roller, when the roller rotates until the meshes face downwards, materials in the roller fall off through the meshes under the action of gravity, are continuously carbonized under the heating of high-temperature airflow and are attached to the surface of a fired green body to form ash glaze.

Description

Technical Field

[0001] The invention relates to the technical field of roller kilns, in particular to a roller kiln capable of generating a wood-burning atmosphere. Background Art

[0002] The firing process of wood-fired kiln is to gradually increase the temperature. On the first day of firing the kiln, the fire is ignited and smoked at low temperature. The carbon released by the firewood fills the pores of the clay blank. After the surface of the clay blank presents the black color of carbon, the temperature can be continued to rise. This process takes about 30 hours. The characteristic of wood-fired kiln is that the ashes and flames produced by the burning of wood directly rush into the kiln. Unlike the general beautiful glaze, the ash in the kiln naturally adheres to the body, and forms a warm, smooth and layered natural gray glaze under high temperature baking. The roller kiln is a continuous kiln, a tunnel kiln with rotating rollers as the carrier of the body. The blanks, products, etc. are placed on many closely spaced horizontal refractory rollers, and the ceramics are transferred from the head of the kiln to the tail of the kiln by the rotation of the rollers. The wood-fired kiln consumes a lot of wood and is not environmentally friendly.

[0003] After searching, the Chinese patent application number 201820400031.X discloses an energy-saving and environmentally friendly kiln that can produce a wood-burning atmosphere. It consists of a wood burning system, a kiln body, a smoke exhaust system, a steel frame structure, a gas combustion system, a kiln car and a kiln door. The kiln body is fixed by a steel frame structure, and a wood burning system is arranged on both sides of the kiln cavity of the kiln body. The kiln cavity bottom of the kiln body is provided with a gas combustion system, and the kiln body is equipped with a kiln car that can freely enter and exit the kiln body. The front end of the kiln body is provided with a kiln door, and the kiln body is provided with a smoke exhaust system. The utility model is an environmentally friendly and energy-saving kiln that can burn products with a single gas, and can also achieve a wood-burning atmosphere by mixing wood and gas; Although the above patent heats the kiln body by adding a gas combustion system and cooperating with a firewood combustion system to achieve the effect of reducing the amount of firewood used while creating a firewood burning atmosphere, the combustion of firewood is still required to participate in creating the firewood burning atmosphere. During the firing process, a large amount of wood is still required to achieve a good firewood burning atmosphere.

[0004] Another search revealed that Chinese patent application number 201711325384.4 disclosed a black-bottom imitation wood-fired decoration. The components and mass of the black-bottom imitation wood-fired decoration base glaze are as follows: 35 to 42 parts of feldspar; 15 to 23 parts of dolomite; 3 to 6 parts of zinc oxide; 7 to 9 parts of barium carbonate; 7 to 9 parts of kaolin; 12 to 15 parts of Jiepai mud; 15 to 20 parts of iron oxide; 5 to 8 parts of manganese carbonate; the components and the content of the components of the top glaze are as follows: 30 to 35 parts of potassium feldspar; 10 to 12 parts of calcite; 14 to 16 parts of dolomite; 4 to 6 parts of Guizhou soil; 8 to 13 parts of wollastonite; 8 to 12 parts of titanium oxide; 8 to 10 parts of zirconium silicate; This black base imitation wood-fired decoration is achieved by adding a large amount of iron oxide and manganese oxide to the base glaze, and through the opacifying covering properties of the top glaze, through the reaction between the double layers of glaze and special technology to achieve the wood-fired presentation effect. Compared with the wood-fired effect, it is more controllable, and its performance and practical value are higher than those of wood-fired, and it is deeply loved by consumers.

[0005] Although the above patent sprays the prefabricated glaze on the porcelain blank and fires it in a track kiln, forming a glaze surface similar to wood-fired ash glaze on the porcelain after firing the prefabricated glaze, it uses a lot of materials and has a complicated production process. After the prefabrication is completed, it also needs to be evenly sprayed on the porcelain blank, which increases the cost of firing the porcelain.

[0006] Therefore, a roller kiln that can produce a wood-burning atmosphere is urgently needed to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to solve the problems in the prior art that directly forming ash glaze by wood burning consumes a large amount of wood and is not environmentally friendly, and that forming ash glaze by spraying prefabricated glaze is costly, and a roller kiln that can generate a wood burning atmosphere is proposed.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions: A roller kiln capable of producing a wood-burning atmosphere comprises a roller kiln and a conveying roller that runs through the interior of the roller kiln, a carrier plate installed at the kiln head position of the roller kiln, a roller installed between a first end plate and a second end plate at the top inner side of the kiln head of the roller kiln is provided below the carrier plate, the roller is connected to the output end of a second motor on the outer side of the carrier plate through a tooth groove at the outer end through gear meshing, a plurality of evenly arranged meshes are provided at the bottom of the roller, a plug is provided at the open end of the roller, air distribution boxes are provided on both sides of the interior of the kiln head of the roller kiln, and an air duct connected to a high-temperature zone of the roller kiln is provided at the outer end of the air distribution box.

[0009] As a preferred technical solution of the present application, support rollers located on both sides of the bottom of the drum are further provided between the second end plate and the first end plate.

[0010] As a preferred technical solution of the present application, a support rod is installed on one end of the inner side of the plug, and a plurality of pressure rollers are rotatably installed on the support rod. Both ends of the pressure rollers are equipped with rings rotatably sleeved on the support rod through connecting rods.

[0011] As a preferred technical solution of the present application, a support ring is installed at the other end of the support rod, and the interior of the support ring is connected to a mounting sleeve installed on the support rod through a plurality of connecting plates.

[0012] As a preferred technical solution of the present application, the side of the air distribution box is provided with a plurality of oblique air outlet heads located in the upper half and a plurality of horizontal air outlet heads located in the lower half.

[0013] As the preferred technical solution of the present application, the horizontal air outlet heads are evenly distributed in the lower half of the side of the air distribution box, and the oblique air outlet heads located in the upper half are mirror-distributed at both ends, and the multiple air outlet heads mirror-distributed at both ends are all inclined toward the center.

[0014] As a preferred technical solution of the present application, the internal thread of the air outlet head is connected to an air head inner core, and the air head inner core is inserted into one end of the air outlet head and is equipped with a sealing column that matches the second air outlet hole opened at the outer end of the air outlet head. The interior of the air head inner core is hollow, and the end of the air head inner core is provided with a plurality of uniform first air outlet holes around the sealing column.

[0015] As a preferred technical solution of the present application, a mounting plate is provided at the other end of the air head inner core, and the air head inner core is mounted on the air distribution box through the mounting plate.

[0016] As a preferred technical solution of the present application, the drum is used to place a mixture of one or more of carbon powder, wood ash, and limestone.

[0017] As a preferred technical solution of the present application, the feed roller table includes multiple groups of heat-resistant rollers driven by a first motor.

[0018] Compared with the prior art, the present invention provides a roller kiln that can produce a wood-burning atmosphere, which has the following beneficial effects: 1. The roller kiln capable of generating a wood-burning atmosphere has a plurality of evenly arranged meshes at the bottom of the drum, so that when the drum is rotated to the point where the meshes face downward, a mixture of one or more of carbon powder, plant ash, limestone, etc., inside the drum falls through the meshes under the action of gravity and continues to be carbonized and attached to the surface of the fired blank under the heating of the high-temperature airflow. The addition of plant ash and other materials during the firing process is simple to operate, and the cost of firing the gray glaze is effectively reduced, thus solving the problems in the prior art that the gray glaze formed by wood-burning consumes a large amount of wood and is not environmentally friendly, and the cost of forming the gray glaze by spraying prefabricated glaze is high; 2. The roller kiln capable of generating a wood-burning atmosphere has a support rod and a pressure roller rotatably connected to the support rod installed on one end of the inner side of the plug, so that the material is squeezed by the pressure roller when the drum rotates, so that the material passes through the mesh more evenly, thus solving the problem of powdery material blocking the mesh and uneven discharge in the prior art; 3. The roller kiln that can generate a wood-burning atmosphere blows the falling materials to the side of the porcelain blank through the air distribution box on the side of the kiln head of the roller kiln, so that the carbon powder and other materials falling through the mesh under the action of gravity are more evenly distributed on the side of the porcelain blank, solving the problem in the prior art that the falling materials are difficult to be evenly distributed on the side of the porcelain blank; 4. The roller kiln capable of producing a wood-burning atmosphere has an air head inner core disposed inside the air outlet head, so that the sealing column can be moved away from or inserted into the second air outlet hole by rotating the air outlet head, thereby solving the problem in the prior art that the air outlet head is inconvenient to close, resulting in inconvenient adjustment of the air flow inside the kiln head. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the drum installation structure of the present invention; Figure 3 It is a schematic diagram of the connection structure between the drum and the plug of the present invention; Figure 4 It is a schematic diagram of the pressure roller installation structure of the present invention; Figure 5 This is a schematic diagram of the structure of the air distribution box of the present invention; Figure 6 It is a schematic diagram of the connection structure between the air outlet head and the air head inner core of the present invention.

[0020] In the figure: 1. Roller kiln; 2. Feed roller; 3. First motor; 4. First end plate; 5. Carrier plate; 6. Air distribution box; 7. Second motor; 8. Plug; 9. Roller; 10. Support roller; 11. Second end plate; 12. Mesh; 13. Support rod; 14. Press roller; 15. Ring; 16. Connecting rod; 17. Support ring; 18. Mounting sleeve; 19. Connecting plate; 20. Air guide tube; 21. Air outlet head; 22. Air head inner core; 23. Mounting plate; 24. First air outlet; 25. Sealing column; 26. Second air outlet. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention. Example

[0022] Reference Figure 1-Figure 6 A roller kiln capable of generating a wood-burning atmosphere comprises a roller kiln 1 and a conveying roller 2 penetrating the interior of the roller kiln 1, wherein the conveying roller 2 comprises a plurality of groups of heat-resistant rollers driven by a first motor 3, and the rotating heat-resistant rollers are used as a blank carrier to place the product on the conveying roller 2, and the heat-resistant rollers are continuously rotated to transfer the product from the kiln head to the kiln tail, thereby completing the sintering and firing process; Reference Figure 2-Figure 4 , further, it also includes a carrier plate 5 installed at the kiln head position of the roller kiln 1, a roller 9 installed between the first end plate 4 and the second end plate 11 is provided below the carrier plate 5, the outer end of the roller 9 is provided with a tooth groove, and is meshed with the output end of the second motor 7 on the outer side of the carrier plate 5 through a gear, and the roller 9 is driven to rotate by the second motor 7, the first end plate 4 and the second end plate 11 are both installed on the top of the inner side of the kiln head of the roller kiln 1, and the roller 9 is supported by the second end plate 11 and the first end plate 4, and support rollers 10 located on both sides of the bottom of the roller 9 are provided between the second end plate 11 and the first end plate 4, and the support rollers 10 can rotate, and the roller 9 located between the second end plate 11 and the first end plate 4 is supported by the support rollers 10 to maintain its stability, and at the same time, the roller When the drum 9 rotates, the support roller 10 can also rotate with it, reducing the friction between the drum 9 and the surface of the support roller 10 when the drum 9 rotates, thereby increasing the service life of the drum 9; a plurality of evenly arranged meshes 12 are provided at the bottom of the drum 9, and a mixture of one or more of carbon powder, wood ash, limestone, etc. is driven into the drum 9. When the meshes 12 face downward when the drum 9 rotates, the material inside the drum 9 falls into the roller kiln 1 through the meshes 12 under the action of gravity, and the falling material continues to carbonize under the heating of the high-temperature airflow and adheres to the surface of the fired blank. In the low-temperature zone of the roller kiln 1, the carbonized carbon and wood ash slowly fall and fill the pores of the clay embryo on the kiln body. When the roller transports the kiln body to the high-temperature zone, the high-temperature firing is performed for glazing, thereby forming a glazing layer simulating the effect of wood firing; The open end of the drum 9 is provided with a plug 8, and the open end of the drum 9 is blocked by the plug 8 to reduce the leakage of the internal material when the drum 9 rotates. At the same time, a support rod 13 is installed on one end of the inner side of the plug 8, and a mounting sleeve 18 is installed on the other end of the support rod 13. The outer side of the mounting sleeve 18 is connected to a support ring 17 through multiple connecting plates 19. Through the support ring 17, the connecting plate 19 and the mounting sleeve 18, one end of the support rod 13 located inside the drum 9 can be supported. A pressure roller 14 is rotatably installed on the support rod 13, wherein the pressure roller 14 is provided with multiple, and connecting rods 16 are installed at both ends of the pressure roller 14. The connecting rod 16 is L-shaped, and a collar 15 is installed on the top of the connecting rod 16. The collar 15 rotates It is sleeved on the support rod 13, and the material is driven into the drum 9 and sealed by the plug 8. During firing, the drum 9 is driven to rotate by the second motor 7. During the rotation, the pressure roller 14 remains in a drooping state under the action of gravity. When the drum 9 rotates, the pressure roller 14 does not rotate with it. Therefore, the material inside the drum 9 is squeezed or pushed by the pressure roller 14. Since the material inside the drum 9 is powdery and has a light weight, it may be blocked in the mesh 12 during rotation, which will cause less material to be contaminated on the porcelain blank, affecting the final glaze forming effect. The set pressure roller 14 can squeeze the material during rotation, so that the material can pass through the mesh 12 more evenly.

[0023] Reference Figure 1 and Figure 5 , further, it also includes an air distribution box 6 arranged on both sides of the kiln head of the roller kiln 1, and an air guide pipe 20 is arranged at the outer end of the air distribution box 6. The outer end of the air guide pipe 20 is connected with an external air pump or a high-temperature zone inside the roller kiln 1. When connected with the high-temperature zone inside the roller kiln 1, a blower is provided to accelerate the circulation of hot air, so that the falling materials are blown to the side of the porcelain blank through the air distribution box 6 located on the side of the kiln head of the roller kiln 1, so that the carbon powder and other materials falling through the mesh 12 under the action of gravity are more evenly distributed on the side of the porcelain blank. The air distribution box 6 can be a continuous jet of air or an intermittent jet of air. The side of the air distribution box 6 is provided with a plurality of oblique air outlet heads 21 located in the upper half and a plurality of horizontal air outlet heads 21 located in the lower half. The air outlet heads 21 are evenly distributed in the lower half of the side of the air distribution box 6. By blowing out a horizontal airflow, the fallen materials are blown onto the surface of the porcelain blank facing the kiln wall of the roller kiln 1. The air outlet heads 21 located in the upper half are mirror-distributed at both ends, and the plurality of air outlet heads 21 at both ends are inclined toward the center, so that they blow out oblique airflows, leaning against the air distribution boxes 6 on both sides, and blow the fallen materials onto the surface parallel to the kiln wall of the roller kiln 1, effectively reducing dead angles, and distributing materials such as carbon more evenly on the side of the porcelain blank.

[0024] Reference Figure 6Furthermore, the internal thread of the air outlet head 21 is connected with an air head inner core 22, and a sealing column 25 is installed on one end of the air head inner core 22 inserted into the air outlet head 21, and cooperates with the second air outlet hole 26 opened at the outer end of the air outlet head 21, and the second air outlet hole 26 can be blocked by the sealing column 25. The other end of the air head inner core 22 is provided with a mounting plate 23, which is connected to the air outlet on the air distribution box 6 through the mounting plate 23, and can be fixed and connected by welding or bolts. The interior of the air head inner core 22 is hollow, and a plurality of uniform first air outlet holes 24 are opened around the sealing column 25 at the end of the air head inner core 22. When in use, By rotating the air outlet head 21 and making the sealing column 25 away from the second air outlet 26, the air passage inside the air outlet head 21 can be opened, and the air flow is ejected outward through the second air outlet 26. At the same time, by rotating the air outlet head 21 in the opposite direction, and finally blocking the second air outlet 26 with the sealing column 25, and the air outlet head 21 also blocks the first air outlet 24 to isolate the circulation of the internal air flow, the air outlet head 21 no longer ejects air flow. When firing ceramic blanks and other workpieces, the opening and closing of the air outlet head 21 on the air distribution box 6 is adjusted according to actual needs, so that the ejected air flow also changes accordingly, so that the falling material will also produce different adhesion effects on ceramic blanks and other workpieces.

[0025] Specifically, when the roller kiln that can produce a wood-burning atmosphere is working / in use: the porcelain blank or workpiece is directly placed on the feed roller 2, or it can be placed on the feed roller 2 through a heat-resistant carrier plate. Under the transportation of the feed roller 2, the workpiece enters the interior of the roller kiln 1. When passing through the low-temperature zone, materials such as carbon powder that fall from the rotating drum 9 slowly fall down under the action of gravity, and carbonized carbon and wood ash fill the pores of the workpiece mud embryo on the feed roller 2. At the same time, under the action of the airflow ejected from the air distribution box 6, the slowly falling carbon and wood ash are evenly attached to the side of the workpiece mud embryo under the drive of the lateral and oblique airflow. When the feed roller 2 transports the kiln body to the high-temperature zone, high-temperature firing is performed for glazing, thereby forming a glazing layer that simulates the wood-burning effect.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A roller kiln capable of generating a wood-burning atmosphere, comprising a roller kiln (1) and a conveying roller (2) penetrating the interior of the roller kiln (1), characterized in that: A carrier plate (5) is installed at the kiln head of the roller kiln (1), and a roller (9) is installed between a first end plate (4) and a second end plate (11) at the top of the inner side of the kiln head of the roller kiln (1) below the carrier plate (5). The roller (9) is meshed with the output end of a second motor (7) outside the carrier plate (5) through a tooth groove at the outer end through a gear. A plurality of evenly arranged meshes (12) are provided at the bottom of the roller (9), and a plug (8) is provided at the open end of the roller (9). Air distribution boxes (6) are provided on both sides of the kiln head of the roller kiln (1), and an air guide pipe (20) communicating with a high temperature zone of the roller kiln (1) is provided at the outer end of the air distribution box (6).

2. A roller kiln capable of producing a wood-burning atmosphere according to claim 1, characterized in that: Support rollers (10) are also provided between the second end plate (11) and the first end plate (4) and are located on both sides of the bottom of the roller (9).

3. A roller kiln capable of producing a wood-burning atmosphere according to claim 1, characterized in that: A support rod (13) is mounted on one end of the inner side of the plug (8), a plurality of pressure rollers (14) are rotatably mounted on the support rod (13), and collars (15) rotatably sleeved on the support rod (13) are mounted on both ends of the pressure rollers (14) via connecting rods (16).

4. A roller kiln capable of producing a wood-burning atmosphere according to claim 3, characterized in that: A support ring (17) is installed at the other end of the support rod (13), and the interior of the support ring (17) is connected to a mounting sleeve (18) mounted on the support rod (13) via a plurality of connecting plates (19).

5. A roller kiln capable of producing a wood-burning atmosphere according to claim 1, characterized in that: The side surface of the air distribution box (6) is provided with a plurality of oblique air outlet heads (21) located in the upper half and a plurality of horizontal air outlet heads (21) located in the lower half.

6. A roller kiln capable of producing a wood-burning atmosphere according to claim 5, characterized in that: The horizontal air outlet heads (21) are evenly distributed on the lower half of the side of the air distribution box (6), and the oblique air outlet heads (21) located on the upper half are mirror-distributed at both ends, and the multiple air outlet heads (21) distributed in a mirror-distributed manner at both ends are all inclined toward the center.

7. A roller kiln capable of producing a wood-burning atmosphere according to claim 5, characterized in that: The internal thread of the air outlet head (21) is connected to an air outlet core (22); one end of the air outlet core (22) inserted into the air outlet head (21) is provided with a sealing column (25) that matches a second air outlet hole (26) opened at the outer end of the air outlet head (21); the interior of the air outlet core (22) is hollow; and a plurality of uniform first air outlet holes (24) are opened at the end of the air outlet core (22) around the sealing column (25).

8. A roller kiln capable of producing a wood-burning atmosphere according to claim 7, characterized in that: A mounting plate (23) is provided at the other end of the air head inner core (22), and the air head inner core (22) is mounted on the air distribution box (6) via the mounting plate (23).

9. A roller kiln capable of producing a wood-burning atmosphere according to claim 1, characterized in that: The drum (9) is used to place a mixture of one or more of carbon powder, wood ash, and limestone.

10. The roller kiln capable of producing a wood-burning atmosphere according to claim 1, characterized in that: The feed roller conveyor (2) comprises a plurality of groups of heat-resistant rollers driven by a first motor (3).

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