Roller kiln with heat insulation function
By installing heat insulation covers and cooling components in the roller kiln, the problem of transmission structure failure in high-temperature environments was solved, the stability and lifespan of the transmission structure were extended, and operating costs were reduced.
Patent Information
- Application Number
- CN202422899086.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2034-11-26
AI Technical Summary
In high-temperature environments, the transmission structure of traditional roller kilns is prone to failure due to problems such as thermal expansion, thermal stress, and lubricant oxidation, which affects service life and operating costs.
A heat insulation cover is installed in the roller kiln. The cover contains a reflective layer, a metal layer, a heat insulation layer and a heat insulation layer. Combined with cooling components, the temperature of the transmission structure is reduced and the transmission structure is protected from high-temperature corrosion.
It effectively isolates high-temperature radiation and conduction, extends the service life of the transmission structure, reduces the frequency of failures, and lowers the cost of maintenance and replacement parts.
Smart Images
Figure CN223807578U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of roller kiln, specifically a roller kiln with heat insulation function. BACKGROUND
[0002] The conventional roller kiln works under high temperature environment and transports multiple ceramic tiles. The operation process of the roller kiln for transporting ceramic tiles is generally as follows: the transmission structure drives multiple conveying rollers to rotate, so that the multiple conveying rollers rotate at the same speed in the same direction, thereby achieving the effect of transporting ceramic tiles.
[0003] However, the transmission structure is made of metal material and operates under high temperature conditions for a long time. The thermal expansion coefficient of the metal material increases, which causes the matching gap between the key components in the transmission structure to change, thereby affecting the accuracy and stability of the transmission. Moreover, the transmission components also generate thermal stress, which causes material fatigue, cracks, and even breakage, and other serious problems, thereby shortening the service life of the transmission structure.
[0004] In addition, high temperature also accelerates the oxidation and evaporation of lubricating oil, reduces the lubricating effect, increases friction and wear, and further aggravates the failure risk of the transmission structure. CONTENT OF THE UTILITY MODEL
[0005] In view of the above defects, the utility model provides a roller kiln with heat insulation function. The cooling assembly can always cool the heat shield, thereby solving the problem that the transmission structure in the conventional roller kiln is prone to failure under high temperature environment.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] A roller kiln with heat insulation function, comprising a rack, conveying rollers, a transmission structure, and a heat shield;
[0008] Both ends of the conveying roller are fixedly connected with connecting rods, both ends of the conveying roller are rotatably installed on the rack through the connecting rods, one side of the rack is provided with a heat shield, the end of the connecting rod away from the conveying roller extends into the heat shield, the transmission structure is located in the heat shield, the movable end of the transmission structure is connected with multiple connecting rods respectively, and the transmission structure is used for driving multiple connecting rods to rotate.
[0009] A cooling assembly is arranged in the heat shield, and the cooling assembly is used for reducing the temperature in the heat shield.
[0010] The heat shield is sequentially provided with a reflective layer, a first metal layer, a second metal layer, a heat preservation layer, and a heat insulation layer from outside to inside;
[0011] The reflective layer is aluminum foil, aluminum-plated steel plate, or high-temperature-resistant reflective paint;
[0012] The heat preservation layer is mineral wool, rock wool or glass wool;
[0013] The heat insulation layer is ceramic fiber, aerogel or high-silica fiber.
[0014] The cooling assembly comprises a plurality of cooling pipes, which are installed in a flat manner between the first metal layer and the second metal layer, and the cooling pipes are filled with cooling liquid.
[0015] The cross section of the cooling cover is circular, and the first metal layer, the second metal layer and the plurality of cooling pipes are filled with cooling gas.
[0016] The side wall of the heat insulation cover is provided with an access opening, and the heat insulation cover is hinged with an end cover at the access opening, and the end cover is used to open or close the access opening.
[0017] The heat insulation cover is provided with a limiting assembly on both sides of the access opening, the movable end of the limiting assembly abuts against the end cover, and the limiting assembly is used to assist the closing or opening of the access opening by the end cover.
[0018] The limiting assembly comprises a reset member, a limiting block and a sliding block, the limiting block is installed on both sides of the access opening of the heat insulation cover, the limiting block is provided with a horizontal limiting slot, the opening directions of the two limiting slots are oppositely arranged, the sliding block is slidably connected with the limiting slot, the reset member connects the inner wall of the limiting slot with the sliding block, and the end part of the sliding block is movably arranged out of the limiting slot and abuts against the end cover.
[0019] The inner wall of the heat insulation cover is provided with a sealing strip, the sealing strip is annularly arranged on the inner side of the access opening, and the sealing strip is used to seal the gap between the end cover and the heat insulation cover.
[0020] The heat transfer structure comprises a driving motor, a driving shaft and a driving gear, the driving motor is installed on the inner wall of the heat insulation cover, the output end of the driving motor is fixedly connected with the first end of the driving shaft, the tail end of the driving shaft is horizontally rotatably installed on the side wall of the heat insulation cover, the driving shaft is fixedly sleeved with a plurality of driving gears, the end parts of the plurality of connecting rods are fixedly sleeved with a plurality of driven gears, and the plurality of driven gears are one-to-one corresponding to the plurality of driving gears and are meshed with each other.
[0021] The technical scheme of the utility model can include the following beneficial effects:
[0022] 1. The heat insulation cover is arranged on the side wall of the rack, the transmission structure is installed in the heat insulation cover, the heat insulation cover can effectively insulate the heat radiation and conduction of the high temperature environment to the transmission structure, protect the transmission structure from high temperature erosion, and prolong the service life.
[0023] 2、The temperature reducing assembly can reduce the temperature of the heat shield at any time, thereby solving the problem that the transmission structure is prone to failure in a high-temperature environment in a traditional roller kiln. BRIEF DESCRIPTION OF DRAWINGS
[0024] Fig. 1 is a sectional view of the heat shield of one embodiment of the utility model;
[0025] Fig. 2 is a schematic view of the limiting assembly of one embodiment of the utility model;
[0026] Fig. 3 is a schematic view of the interlayer structure of the heat shield of one embodiment of the utility model;
[0027] Fig. 4 is a schematic view of the transmission structure of one embodiment of the utility model;
[0028] 1, rack; 2, conveying roller; 21, connecting rod; 3, transmission structure; 31, drive motor; 32, drive shaft; 33, driving gear; 34, driven gear; 4, heat shield; 41, reflecting layer; 42, first metal layer; 43, second metal layer; 44, heat preservation layer; 45, heat insulation layer; 5, temperature reducing pipe; 6, end cover; 7, limiting assembly; 71, reset member; 72, limiting block; 73, sliding block; 74, sealing strip. DETAILED DESCRIPTION
[0029] The technical scheme of the utility model will be further described below in combination with the drawings and through specific embodiments.
[0030] In the description of the utility model, it is understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0031] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.
[0032] In the description of the utility model, it is necessary to explain that, unless there are explicit provisions and limitations, the terms "installation", "splicing", "connection" should be understood broadly, for example, it can be fixed connection, can be detachable connection, or integrally connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements, for the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0033] The utility model discloses an embodiment of a roller kiln with heat insulation function is described below. Figs. 1 to 4
[0034] A roller kiln with heat insulation function, including frame 1, conveying roller 2, transmission structure 3 and heat shield 4, the heat shield 4 is arranged on the side wall of frame 1, and the transmission structure 3 is installed in the heat shield 4.
[0035] Both ends of conveying roller 2 are fixedly connected with connecting rod 21, both ends of conveying roller 2 are rotatably installed on frame 1 through connecting rod 21, one side of frame 1 is provided with heat shield 4, the end of connecting rod 21 away from conveying roller 2 extends into heat shield 4, transmission structure 3 is located in heat shield 4, and the movable end of transmission structure 3 is connected with a plurality of connecting rods 21 respectively, and transmission structure 3 is used to drive a plurality of connecting rods 21 to rotate.
[0036] Cooling assembly is arranged in heat shield 4, and the cooling assembly is used to reduce the temperature in heat shield 4.
[0037] In the scheme, transmission structure 3 can drive a plurality of connecting rods 21 to rotate, since connecting rod 21 is fixedly connected with conveying roller 2, transmission structure 3 can indirectly drive a plurality of conveying rollers 2 to rotate, ensures that materials can move in the roller kiln, and ensures the normal operation of the roller kiln.
[0038] Wherein, heat shield 4 is arranged on the side wall of frame 1, and transmission structure 3 is installed in heat shield 4, heat shield 4 can effectively isolate the heat radiation and conduction of high-temperature environment to transmission structure 3, protect transmission structure 3 from high-temperature erosion, and prolong its service life.
[0039] It is worth mentioning that the cooling assembly can cool heat shield 4 at any time, thereby solving the problem that transmission structure 3 is prone to failure in a high-temperature environment in the traditional roller kiln.
[0040] The heat shield 4 is sequentially provided with a reflective layer 41, a first metal layer 42, a second metal layer 43, a heat preservation layer 44 and a heat insulation layer 45 from outside to inside.
[0041] The reflective layer 41 is aluminum foil, aluminized steel plate or high-temperature resistant reflective paint.
[0042] The heat preservation layer 44 is mineral wool, rock wool or glass wool.
[0043] The heat insulation layer 45 is ceramic fiber, aerogel or high-silica fiber.
[0044] It is worth mentioning that the reflective layer 41 is located at the outermost layer, which can effectively reflect the high-temperature radiant heat in the kiln, reduce the direct irradiation and heating of the heat shield 4 internal components by the radiant heat, and preliminarily reduce the temperature level inside the heat shield 4.
[0045] In this scheme, the first metal layer 42 and the second metal layer 43 are preferably high-temperature-resistant and high-strength stainless steel materials, and the two metal layers can effectively enhance the overall structural strength of the heat shield 4 and reduce the failure of the transmission structure 3 under external impact.
[0046] The metal layer is internally provided with a heat preservation layer 44 and a heat insulation layer 45, and the heat preservation layer 44 and the heat insulation layer 45 jointly block the heat transfer and keep the internal temperature relatively stable.
[0047] Through the synergistic effect of the above layers, the heat shield 4 shows excellent heat insulation performance in terms of heat insulation, effectively blocks the entry of external heat, and provides a stable and relatively low-temperature operating environment for the internal transmission structure 3, thereby prolonging the service life of the transmission structure 3, reducing the frequency of maintenance and replacement of parts, and further reducing the operating cost of the enterprise.
[0048] The cooling assembly includes a plurality of cooling pipes 5, and the plurality of cooling pipes 5 are installed in a flat manner between the first metal layer 42 and the second metal layer 43, and the cooling pipes 5 are filled with cooling liquid.
[0049] The cooling pipes 5 are installed in a flat manner between the first metal layer 42 and the second metal layer 43, which not only enhances the structural support between the first metal layer 42 and the second metal layer 43, but also ensures the uniform distribution of heat in the heat shield 4, avoiding the phenomenon of local overheating or overcooling in the heat shield 4.
[0050] In addition, the first metal layer 42 and the second metal layer 43 may be stressed or deformed due to thermal expansion in a high-temperature environment, and the cooling pipes 5 installed between the first metal layer 42 and the second metal layer 43 can relieve the thermal stress state of the first metal layer 42 and the second metal layer 43, thereby prolonging the service life of the first metal layer 42 and the second metal layer 43 and maintaining the stability and reliability of the heat shield 4.
[0051] In the present scheme, the cooling liquid is preferably tap water. Because of the large specific heat capacity of water, it can absorb or release a large amount of heat while its temperature changes relatively little. Therefore, during the cooling process, the cooling liquid can effectively absorb heat from the cooling pipe 5 without its temperature rising rapidly, thereby maintaining a long cooling effect.
[0052] The cross section of the cooling cover is circular, and the first metal layer 42, the second metal layer 43 and the plurality of cooling pipes 5 are filled with cooling gas.
[0053] During the cooling process, the circular cross-section of the cooling pipe 5 can reduce the thermal stress concentration phenomenon caused by irregular shape, so that the cooling liquid can flow more smoothly and take away heat. Therefore, the circular cooling cover can provide more uniform and efficient heat dissipation effect, ensuring that the temperature of each part of the cooled object drops evenly.
[0054] It is worth noting that the cooling gas is preferably air. When the heat shield 4 is locally heated, the air temperature near it will rise, forming a density difference. This density difference will drive the air to produce natural convection between the first metal layer 42 and the second metal layer 43, bringing heat from the high-temperature area to the low-temperature area, which not only helps to distribute heat evenly, but also speeds up heat dissipation to some extent, improving the cooling effect.
[0055] Moreover, the cooling gas can exist as a thermal resistance layer, slowing down the direct transfer of heat from a high-temperature environment to a low-temperature environment, so that the heat will be attenuated when passing through the air layer, thereby reducing the temperature rise rate inside the heat shield 4.
[0056] The side wall of the heat shield 4 is provided with an access opening, and the heat shield 4 is hinged with an end cover 6 at the access opening, and the end cover 6 is used to open or close the access opening.
[0057] The heat shield 4 is provided with a limiting component 7 on both sides of the access opening, and the movable end of the limiting component 7 abuts against the end cover 6, and the limiting component 7 is used to assist the end cover 6 to close or open the access opening.
[0058] The side wall of the heat shield 4 is provided with an access opening, an end cover 6 and a limiting component 7. When the transmission structure 3 needs to be repaired, the movable end of the limiting component 7 is adjusted so that the movable end of the limiting component 7 is separated from the end cover 6, and the end cover 6 is rotated to open the access opening, and the internal transmission structure 3 is repaired. After the repair is completed, the end cover 6 is rotated to close the access opening, and then the movable end of the limiting component 7 is adjusted so that the movable end of the limiting component 7 abuts against the end cover 6, effectively reducing the situation that the end cover 6 opens the access opening by itself during operation, causing the transmission structure 3 to malfunction due to high temperature environment.
[0059] The limiting assembly 7 comprises a reset member 71, a limiting block 72 and a sliding block 73, the limiting block 72 is installed on both sides of the access hole of the heat shield 4, the limiting block 72 is provided with horizontal limiting grooves, the opening directions of the two limiting grooves are oppositely arranged, the sliding block 73 is in sliding connection with the limiting grooves, the reset member 71 connects the inner wall of the limiting groove with the sliding block 73, and the end of the sliding block 73 is movably arranged out of the limiting groove and abuts against the end cover 6.
[0060] Under normal conditions, the end cover 6 closes the access hole, the sliding block 73 is stretched out of the limiting groove under the action of the reset member 71, and the side wall of the sliding block 73 abuts against the outer side wall of the end cover 6, so that the limiting assembly 7 can limit the end cover 6 to open the access hole under unnecessary conditions.
[0061] When the transmission structure 3 fails, the sliding block 73 is pressed to the inner wall of the limiting block 72, the reset member 71 is compressed inwardly, so that the sliding block 73 is located in the limiting block 72, at this time, the sliding block 73 is separated from the end cover 6, and the worker can rotate the end cover 6 to open the access hole. At this time, the sliding block 73 is loosened, the reset member 71 loses the pressing force, and is stretched outwardly, the sliding block 73 is moved outwardly out of the limiting groove under the action of the reset member 71, so as to complete the resetting process. Then the end cover 6 is rotated, the inner side wall of the end cover 6 abuts against the sliding block 73, so as to limit the minimum inclination angle of the end cover 6 to open the access hole, and ensure that the access hole remains in a stable open state during the maintenance process, so that the worker can smoothly carry out the maintenance work.
[0062] The inner wall of the heat shield 4 is provided with a sealing strip 74, the sealing strip 74 is annularly arranged on the inner side of the access hole, and the sealing strip 74 is used for sealing the gap between the end cover 6 and the heat shield 4.
[0063] The sealing strip 74 is closely attached to the inner side of the access hole, when the end cover 6 is closed, the sealing strip 74 can effectively fill the small gap between the end cover 6 and the heat shield 4, and prevent hot air from invading the heat shield 4 through the gap.
[0064] Moreover, the sealing strip 74 also plays a certain limiting role, which effectively avoids the situation that the end cover 6 opens to the access hole. When the end cover 6 closes the access hole, the sealing strip 74 and the limiting assembly 7 jointly limit the inclination angle of the end cover 6, so as to avoid the situation that the end cover 6 opens to the access hole during operation.
[0065] The heat transfer structure comprises a driving motor 31, a driving shaft 32 and a driving gear 33, the driving motor 31 is installed on the inner wall of the heat shield 4, the output end of the driving motor 31 is fixedly connected with the first end of the driving shaft 32, the tail end of the driving shaft 32 is horizontally rotatably installed on the side wall of the heat shield 4, the driving shaft 32 is fixedly sleeved with a plurality of driving gears 33, the end portion of the plurality of connecting rods 21 close to the transmission structure 3 is fixedly sleeved with a driven gear 34, and the plurality of driven gears 34 correspond to the plurality of driving gears 33 one by one and are meshed with each other.
[0066] The driving motor 31 is started, the driving motor 31 can drive the rotating shaft to rotate, the rotating shaft drives the plurality of driving gears 33, the driving gears 33 can drive the driven gears 34 to rotate, the driven gears 34 rotating can drive the connecting rods 21 to rotate, so that the rotating shaft is ensured to rotate.
[0067] The driving motor 31, the driving gear 33 and the driven gear 34 are all installed in the heat shield 4, so that the high-temperature air flow in the roller kiln can be effectively reduced to flow to the sensitive parts with high precision, such as the driving motor 31, the driving gear 33 and the driven gear 34, the meshing precision of the driving gear 33 and the driven gear 34 and the operation efficiency of the driving motor 31 are maintained, performance degradation or damage caused by overheating is avoided, and the service life of the equipment is prolonged.
[0068] The technical principle of the utility model is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the utility model, and cannot be explained as the limitation of the protection scope of the utility model in any way. Based on the explanation herein, the person skilled in the art can think of other specific embodiments of the utility model without creative labor, and these embodiments will all fall within the protection scope of the utility model.
Claims
1. A roller hearth kiln having a heat insulation function, characterized by, The rack, the conveying roller, the transmission structure and the heat shield are included. Both ends of the conveying roller are fixedly connected with connecting rods, both ends of the conveying roller are rotatably installed on the rack through the connecting rods, one side of the rack is provided with a heat shield, the end of the connecting rod away from the conveying roller extends into the heat shield, the transmission structure is located in the heat shield, and the movable ends of the transmission structure are connected with a plurality of the connecting rods. A cooling assembly is arranged in the heat shield, and the cooling assembly is used for reducing the temperature in the heat shield.
2. A roller hearth kiln with thermal insulation function according to claim 1, characterized in that, The heat shield is sequentially provided with a reflective layer, a first metal layer, a second metal layer, a heat preservation layer and a heat insulation layer from outside to inside. The reflective layer is aluminum foil, aluminized steel plate or high-temperature resistant reflective paint. The heat preservation layer is mineral wool, rock wool or glass wool. The heat insulation layer is ceramic fiber, aerogel or high-silica fiber.
3. A roller hearth kiln with thermal insulation according to claim 2, characterized in that, The cooling assembly includes a plurality of cooling pipes, and the plurality of cooling pipes are installed between the first metal layer and the second metal layer in a flat manner, and the cooling pipes are filled with cooling liquid.
4. A roller hearth kiln with thermal insulation function according to claim 3, characterized in that, The cross section of the cooling pipe is circular, and the first metal layer, the second metal layer and the plurality of cooling pipes are filled with cooling gas.
5. The roller hearth kiln with thermal insulation function according to claim 1, characterized in that, A side wall of the heat shield is provided with an access opening, and an end cover is hingedly connected to the heat shield at the access opening, and the end cover is used for opening or closing the access opening. Limiting assemblies are arranged on both sides of the access opening of the heat shield, the movable ends of the limiting assemblies abut against the end cover, and the limiting assemblies are used for assisting the end cover to close or open the access opening.
6. A roller hearth kiln with thermal insulation according to claim 5, characterized in that, The limiting assembly includes a reset member, a limiting block and a sliding block, the limiting block is installed on both sides of the access opening of the heat shield, the limiting block is provided with a horizontal limiting groove, the opening directions of the two limiting grooves are oppositely arranged, the sliding block is slidably connected with the limiting groove, the reset member connects the inner wall of the limiting groove with the sliding block, and the end of the sliding block is movably arranged out of the limiting groove and abuts against the end cover.
7. A roller hearth kiln with thermal insulation according to claim 5, characterized in that, An inner wall of the heat shield is provided with a sealing strip, the sealing strip is annularly arranged on the inner side of the access opening, and the sealing strip is used for sealing the gap between the end cover and the heat shield.
8. The roller hearth kiln with thermal insulation function according to claim 1, characterized in that, The transmission structure includes a driving motor, a driving shaft and a driving gear, the driving motor is installed on the inner wall of the heat shield, the output end of the driving motor is fixedly connected with the first end of the driving shaft, the last end of the driving shaft is horizontally rotatably installed on the side wall of the heat shield, the driving shaft is fixedly provided with a plurality of the driving gears, the end of each of the connecting rods close to the transmission structure is fixedly provided with a driven gear, and each of the driven gears corresponds to one of the driving gears and is meshed with the driving gear.