Thermal insulation protection device
By designing a multi-layer reflective screen and a safety interlock device in the secondary feeding unit, the problems of heat loss, temperature instability and safety hazards have been solved, achieving heat retention, temperature stability and extended equipment life, thereby improving production stability and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-19
- Publication Date
- 2026-04-10
AI Technical Summary
Existing secondary feeding devices lack effective heat insulation measures, leading to problems such as heat loss and energy depletion, unstable material temperature, safety hazards, equipment aging, and unstable production processes.
A heat insulation and protection device was designed, including a multi-layer reflector and a safety interlock device. By operating the safety interlock device, the heat insulation screen seals the through hole at the top of the furnace cover, blocking the heat radiation from the molten pool. The reflector is made of materials such as molybdenum-lanthanum heat insulation screen or titanium-zirconium-molybdenum heat insulation screen, and the sealing and opening are achieved by combining a ceramic heat insulation screen bracket and a ball-head handle.
It effectively reduces heat loss, stabilizes material temperature, eliminates safety hazards, extends equipment life, and improves production process stability and product quality.
Smart Images
Figure CN224108595U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to high temperature processing equipment technical field, concretely is a kind of heat shield for secondary feeding. BACKGROUND
[0002] In industrial production, when secondary feeding, induction smelting furnace, need to heat treatment to material, however, if the existing secondary feeding device does not have effective heat insulation measures, the following problems can exist:
[0003] First, heat loss and energy loss: a large amount of heat is lost to the surrounding environment, resulting in the need to consume more energy to achieve the same material processing temperature, increasing energy consumption costs, reducing heating efficiency, not meeting the energy-saving and environmental protection requirements, especially in the production process with high energy utilization efficiency requirements. Second, unstable material temperature control: changes in ambient temperature can affect the temperature of the material in the device, causing temperature fluctuations, affecting material processing results and quality, and in processes with strict temperature requirements, product quality can be unstable. At the same time, uneven heat loss can also cause local overheating or overcooling of the material, affecting the material reaction process and product consistency. Third, safety hazards: the outer wall of the device without heat insulation can reach a very high temperature when heated, and the operator can be easily scalded when feeding or maintaining the equipment. In addition, if there are flammable and explosive substances around the device, the lost heat can reach the ignition point, causing a fire or even an explosion, which poses a significant safety risk in a chemical production environment. Fourth, equipment aging and damage: continuous heat loss causes the device shell and internal structure materials to be in a large temperature change environment for a long time, which can cause thermal deformation, reduce the structural strength of the equipment, and shorten its service life. Unstable temperature changes can also affect critical components within the device, such as seals and valves, leading to poor sealing, increased wear and tear, and increased equipment maintenance and replacement costs. In production processes that require precise process parameters, the lack of heat insulation in the secondary feeding device can also affect the stability of the entire production process, thereby affecting product quality and yield.
[0004] Therefore, it is necessary to design a heat shield that solves the above problems. SUMMARY
[0005] To solve the problems of the prior art, the utility model provides a heat shield, which comprises a heat shield located inside a furnace cover and a safety interlock device, one end of the safety interlock device is connected to the heat shield, and the other end of the safety interlock device is installed outside the furnace cover through the furnace cover. By operating the safety interlock device, the heat shield blocks the through hole at the top of the furnace cover, blocking the heat radiation of the molten pool under vacuum.
[0006] The heat shield is composed of several layers of reflective screens, each layer of reflective screen comprising a central reflective screen and an edge reflective screen sleeved outside the central reflective screen, a partition ring being arranged between the outside of the central reflective screen and the inside of the edge reflective screen, the outside of the central reflective screen and the inside of the edge reflective screen being connected through the partition ring, the central reflective screen being located above the high-temperature area of the molten pool, the central reflective screen being a molybdenum lanthanum heat shield or a titanium zirconium molybdenum heat shield, and the edge reflective screen being a molybdenum heat shield.
[0007] Further, the number of layers of the reflective screen is 3-12, the thickness of the molybdenum lanthanum heat shield or the titanium zirconium molybdenum heat shield is 1.2-1.5 mm, and the thickness of the molybdenum heat shield is 0.5-0.8 mm.
[0008] Further, the safety interlocking device comprises a rotating shaft, one end of the rotating shaft extending out of the furnace cover and connected with a ball handle, a bearing being sleeved on the rotating shaft, a sealing tube being fixedly sleeved outside the bearing, the ball handle being located at the top of the sealing tube, a connecting sleeve being fixedly installed at the bottom of the sealing tube and penetratingly installed on the furnace cover, the other end of the rotating shaft being located in the furnace cover and connected with the heat shield through a heat shield bracket, the heat shield being rotated by rotating the rotating shaft through the ball handle, so as to realize the opening / closing of the through hole.
[0009] Further, the heat shield bracket is in a circular ring shape, a bracket connecting plate being arranged on one side of the heat shield bracket, and the heat shield bracket being connected with the rotating shaft through the bracket connecting plate on one side;
[0010] The outside of the central reflective screen is sleeved with a first flange plate, the central reflective screen and the first flange plate being integrally formed, the outside of the first flange plate being sleeved with the partition ring, and the outside of the first flange plate being connected with the inside of the edge reflective screen through the partition ring, the outside of the edge reflective screen being sleeved with a second flange plate;
[0011] The heat shield bracket and the heat shield are connected through the second flange plate through bolts.
[0012] Further, the heat shield bracket is a ceramic heat shield bracket.
[0013] Further, one side of the ball handle is provided with a ball handle support seat, the ball handle support seat being in an arc-shaped frame structure, the top of the ball handle support seat being connected with a first limiting groove and a second limiting groove for opening / closing the heat shield, the rotating position of the ball handle being limited through the first limiting groove and the second limiting groove, so that the heat shield opens / closes the bottom of the secondary feeding device, and the bottom of the ball handle support seat is connected to the furnace cover.
[0014] Further, the first limiting groove and the second limiting groove are limiting grooves formed by two limiting columns, the limiting columns are located at the top of the ball handle support seat, the bottom of the limiting column is connected with the top of the ball handle support seat, one end of the ball handle is connected with the rotating shaft, and the other end of the ball handle is clamped in the first limiting groove / second limiting groove.
[0015] The utility model discloses beneficial effect has:
[0016] The heat insulation protection device of the application, through setting up multilayer reflection screen and safety interlocking device, through operating safety interlocking device makes heat insulation screen block up the through hole in the top of furnace cover, blocks the heat radiation of molten pool under vacuum, effectively reduces the heat loss when secondary charging smelting, stabilizes material temperature, eliminates the security risk, prolongs the service life of equipment, guarantees the stability of production process, improves product quality and output. BRIEF DESCRIPTION OF DRAWINGS
[0017] Fig. 1 It is structure schematic diagram of heat insulation protection device of the utility model;
[0018] Fig. 2 It is installation structure schematic diagram of heat insulation protection device of the utility model;
[0019] Fig. 3 It is sectional view of heat insulation protection device of the utility model.
[0020] Reference signs:
[0021] In the drawing: 1 - heat insulation screen, 2 - rotating shaft, 3 - sealing tube, 4 - ball handle, 5 - ball handle support seat, 6 - furnace cover. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the application.
[0023] Please refer to Figs. 1-3 The utility model provides a kind of heat insulation protection device, comprising: heat insulation screen 1 and safety interlocking device in the inboard of furnace cover 6, and the bottom of secondary charging device is communicated with the top of furnace cover 6;The safety interlocking device one end is connected with the heat insulation screen, and the other end of safety interlocking device is installed in the outside of furnace cover by passing through furnace cover, and heat insulation screen 1 is blocked by operating safety interlocking device The through hole in the top of furnace cover, blocks the heat radiation of molten pool under vacuum;Wherein, the bottom of secondary charging device is communicated with the top of furnace cover by through hole;
[0024] The heat shield 1 is composed of several layers of reflective screens, each layer of reflective screen including a center reflective screen and an edge reflective screen sleeved outside the center reflective screen, a spacer ring being arranged between the outside of the center reflective screen and the inside of the edge reflective screen, the outside of the center reflective screen and the inside of the edge reflective screen being connected through the spacer ring, and the outside of the center reflective screen and the inside of the edge reflective screen being sealedly connected through the spacer ring for heat insulation; the center reflective screen is located above a high-temperature area of a molten pool, the center reflective screen is made of molybdenum lanthanum heat shield or titanium zirconium molybdenum heat shield, and the edge reflective screen is made of molybdenum heat shield; wherein the number of layers of the reflective screen is 3-12, preferably 4-6, the thickness of the molybdenum lanthanum heat shield or the titanium zirconium molybdenum heat shield is 1.2-1.5 mm, and the thickness of the molybdenum heat shield is 0.5-0.8 mm;
[0025] It should be noted that the center reflective screen is located above a high-temperature area of a molten pool, and the molybdenum lanthanum heat shield or the titanium zirconium molybdenum heat shield is used to block the through hole at the top of the furnace cover 6, so as to block the heat radiation of the molten pool under vacuum;
[0026] Further, the safety interlocking device includes a rotating shaft; one end of the rotating shaft 2 extends out of the furnace cover 6 and is movably connected with a ball head handle 4, the ball head handle 4 is provided with a sleeve ring at the end connected with the rotating shaft 2, the ball head handle 4 is installed on the rotating shaft 2 through a nut at one end, a bearing is sleeved on the rotating shaft 2, a sealing pipe 3 is fixedly sleeved on the outside of the bearing, the ball head handle 4 is located at the top of the sealing pipe 3, a connecting sleeve is fixedly installed at the bottom of the sealing pipe 3, the bottom of the sealing pipe 3 and the top of the connecting sleeve are provided with corresponding installation holes, the bottom of the sealing pipe 3 and the top of the connecting sleeve are fixedly connected through bolts, the connecting sleeve penetrates and is installed on the furnace cover 6, an annular sealing sleeve is arranged between the outside of the connecting sleeve and the installation hole on the furnace cover 6, the connecting sleeve is installed on the furnace cover 6 through the annular sealing sleeve, and the sealing of the furnace body is realized, the other end of the rotating shaft 2 is connected with the heat shield 1 through a heat shield bracket in the furnace cover 6, the rotating shaft 2 is rotated by rotating the ball head handle 4, the rotating shaft 2 drives the heat shield 1 to rotate, and the opening / blocking of the through hole is realized; when the heat shield 1 is located at the bottom of the secondary feeding device and also located directly above the crucible molten pool, the heat shield 1 is used to block the heat radiation of the molten pool under vacuum, reduce the loss of a large amount of heat to the surrounding environment, and effectively reduce the heat loss during secondary feeding smelting; at this time, the temperature measuring device (thermocouple) installed in the secondary feeding device stops descending;
[0027] Further, the heat shield bracket is a circular ring, one side of the heat shield bracket is provided with a bracket connecting plate, one side of the heat shield bracket is fixedly connected with the rotating shaft 2 through the bracket connecting plate, and the heat shield bracket is driven to rotate through the rotating shaft; the outer side of the center reflector is sleeved with a first flange plate, the center reflector and the first flange plate are integrally formed, the outer side of the first flange plate is sleeved with the spacer ring, and the outer side of the first flange plate is connected with the inner side of the edge reflector through the spacer ring; the outer side of the edge reflector is sleeved with a second flange plate.
[0028] The heat shield bracket and the heat shield are connected through the second flange plate and the molybdenum bolt.
[0029] Further, the heat shield bracket is a ceramic heat shield bracket.
[0030] It should be noted that the ball handle 4 of the manual operation safety interlocking device is clamped on the ball handle support seat 5, so that the heat shield 1 is located directly below the secondary feeding device; when the heat shield 1 is located directly below the secondary feeding device, the heat shield 1 blocks the bottom of the secondary feeding device, effectively reduces heat loss during secondary feeding smelting, stabilizes material temperature, eliminates safety hazards, prolongs the service life of the equipment, guarantees the stability of the production process, improves product quality and yield.
[0031] Further, one side of the ball handle 4 is provided with a ball handle support seat 5, the ball handle support seat 5 is an arc-shaped frame structure, the top of the ball handle support seat 5 is connected with a first limiting groove and a second limiting groove, and the rotating position of the ball handle 4 is limited through the first limiting groove and the second limiting groove, so that the heat shield 1 opens / closes the bottom of the secondary feeding device.
[0032] The bottom of the ball handle support seat 5 is fixedly connected to the furnace cover 6.
[0033] Further, the first limiting groove and the second limiting groove are limiting grooves formed by two limiting columns, the limiting columns are located at the top of the ball handle support seat 5, the bottom of the limiting column is fixedly connected with the top of the ball handle support seat 5, one end of the ball handle 4 is connected with the rotating shaft 2, and the other end of the ball handle 4 is clamped in the first limiting groove / second limiting groove; wherein the setting position / distance of the first limiting groove and the second limiting groove is adapted to the moving distance of the heat shield 1 driven by the ball handle 4 to rotate, and the moving distance is just enough to make the heat shield 1 close the through hole when the ball handle 4 is clamped in the first limiting groove, and the heat shield completely deviates from the through hole when the ball handle 4 is clamped in the second limiting groove, so that the feeding device can be fed. In addition, those skilled in the art can also set multiple limiting grooves between the first limiting groove and the second limiting groove according to actual needs, so that the opening size of the through hole is controllable.
[0034] In the embodiment, when the heat radiation of the molten pool under vacuum needs to be blocked, the ball handle 4 is located in the first limiting groove, the ball handle 4 drives the heat shield 1 to rotate to the bottom of the secondary feeding device through the rotating shaft 2, the through hole on the top of the furnace cover is blocked by the heat shield 1, and the heat radiation of the molten pool under vacuum is blocked; when the heat radiation of the molten pool under vacuum does not need to be blocked, the ball handle 4 is located in the second limiting groove, the ball handle 4 drives the heat shield 1 to rotate to one side of the bottom of the secondary feeding device through the rotating shaft 2, the through hole on the top of the furnace cover is opened, and the heat radiation of the molten pool under vacuum is allowed;
[0035] It is worth noting that the heat protection device of the application blocks the through hole on the top of the furnace cover by the safety interlocking device and the multi-layer reflection screen, blocks the heat radiation of the molten pool under vacuum, effectively reduces the heat loss during secondary feeding smelting, stabilizes the material temperature, eliminates the safety hazard, prolongs the service life of the equipment, guarantees the stability of the production process, improves the product quality and the yield.
[0036] The above description is only the preferred embodiment of the application, and is not used to limit the application, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the application should be included in the protection scope of the application.
Claims
1. A thermal protection shield, characterized in that, The safety interlock device is connected with the heat shield at one end and is installed outside the furnace cover at the other end, and the heat shield is blocked by operating the safety interlock device to block the through hole at the top of the furnace cover, thereby blocking the heat radiation of the molten pool under vacuum; The heat shield is composed of several layers of reflective screens, each layer of reflective screen comprises a center reflective screen and an edge reflective screen sleeved outside the center reflective screen, and a spacer is arranged between the outside of the center reflective screen and the inside of the edge reflective screen.
2. The thermal protection device of claim 1, wherein The number of layers of the reflective screen is 3-12, and the thickness of the molybdenum lanthanum heat shield or the titanium zirconium molybdenum heat shield is 1.2-1.5 mm; the thickness of the molybdenum heat shield is 0.5-0.8 mm.
3. The thermal protection device of claim 1, wherein, The safety interlock device comprises a rotating shaft, one end of the rotating shaft extends out of the furnace cover and is connected with a ball handle, a bearing is sleeved on the rotating shaft, a sealing tube is fixedly sleeved outside the bearing, the ball handle is located at the top of the sealing tube, a connecting sleeve is fixedly installed at the bottom of the sealing tube, the connecting sleeve penetrates through the furnace cover, the other end of the rotating shaft is located inside the furnace cover and is connected with the heat shield through a heat shield bracket, the rotating shaft is rotated by rotating the ball handle, and the heat shield is rotated by the rotating shaft, so that the through hole is opened / closed.
4. The thermal protection device of claim 3, wherein, The heat shield bracket is a circular ring, one side of the heat shield bracket is provided with a bracket connecting plate, and the heat shield bracket is connected with the rotating shaft through the bracket connecting plate; The outside of the center reflective screen is sleeved with a first flange plate, the center reflective screen and the first flange plate are integrally formed, the first flange plate is sleeved with the spacer, and the first flange plate is connected with the inside of the edge reflective screen through the spacer; The heat shield bracket and the heat shield are connected through the second flange plate by bolts.
5. The thermal protection device of claim 4, wherein, The heat shield bracket is a ceramic heat shield bracket.
6. The thermal protection device of claim 3, wherein, One side of the ball handle is provided with a ball handle support seat, the ball handle support seat is an arc-shaped frame structure, the top of the ball handle support seat is connected with a first limiting groove and a second limiting groove for opening and closing the heat shield, the rotating position of the ball handle is limited through the first limiting groove and the second limiting groove, so that the heat shield opens / closes the bottom of the secondary feeding device, and the bottom of the ball handle support seat is connected with the furnace cover.
7. The thermal protection device of claim 6, wherein, The first limiting groove and the second limiting groove are both formed by two limiting columns, the limiting columns are located at the top of the ball handle support seat, the bottom of the limiting column is connected with the top of the ball handle support seat, one end of the ball handle is connected with the rotating shaft, and the other end of the ball handle is connected in the first limiting groove / second limiting groove.