CN211876727U - Roasting furnace capable of reducing heat loss - Google Patents
Roasting furnace capable of reducing heat loss Download PDFInfo
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- CN211876727U CN211876727U CN202020337340.4U CN202020337340U CN211876727U CN 211876727 U CN211876727 U CN 211876727U CN 202020337340 U CN202020337340 U CN 202020337340U CN 211876727 U CN211876727 U CN 211876727U
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Abstract
The utility model relates to a roasting furnace for reducing heat loss, which belongs to the technical field of roasting furnaces, and the key points of the technical scheme are that the roasting furnace for reducing heat loss comprises a furnace body, wherein a feed inlet is arranged at the top end of the furnace body, a discharge outlet is arranged at the bottom of the furnace body, a boiling component is arranged inside the furnace body and comprises a fan and a bellows, the bellows is positioned inside the furnace body and fixedly connected with the inner wall of the furnace body, the bellows is provided with a plurality of sand leakage holes vertically penetrating through the bellows, the sand leakage holes are not communicated with the inside of the bellows, the upper surface of the bellows is provided with a plurality of boiling columns, the boiling columns are communicated with the inside of the bellows, and the; the fan is fixedly arranged on the outer side of the furnace body and communicated with the air box inside the furnace body, the heating device is fixedly arranged on the outer wall of the furnace body and arranged at the position below the boiling component, and the heating device is communicated with the inside of the furnace body, so that the effect of improving the utilization rate of the heat of the roasting furnace is achieved.
Description
Technical Field
The utility model relates to a technical field who bakes burning furnace especially relates to a burning furnace that bakes burning furnace that reduces heat loss.
Background
The precoated sand is molding sand with a layer of solid resin film coated on the surface of sand, is applied to the casting industry, and has the advantages of good demoulding performance, high surface smoothness of a casting and the like. After the coated sand is used, the resin on the surface is oxidized at high temperature, but the sand grains still have recovery value, and the prior coated sand recovery method is mostly to heat by using a roasting furnace.
The traditional Chinese patent with reference to the publication number of CN209399751U discloses a roasting furnace for efficient recycling of precoated sand, which belongs to the technical field of roasting furnaces, and the key point of the technical scheme is that the roasting furnace for efficient recycling of precoated sand comprises a furnace body, wherein a feed inlet is formed in the top end of the furnace body, a discharge outlet is formed in the bottom of the furnace body, a heating device is fixedly arranged on the outer wall of the furnace body and is communicated with the inside of the furnace body, a boiling component is arranged below the heating device of the furnace body and comprises a fan and a bellows, the fan is fixedly connected with the outer wall of the furnace body, the bellows is arranged in the furnace body and is fixedly connected with the inner wall of the furnace body, the bellows is provided with a plurality of sand leaking holes vertically penetrating through the bellows, the sand leaking holes are not communicated with the inside of the bellows, the upper surface of the bellows is provided with a plurality of boiling, the effect that the precoated sand can be uniformly heated to improve the recovery capacity is achieved.
The above prior art solutions have the following drawbacks: after the heat that this roaster furnace's heating device distributed out heats the tectorial membrane sand of whereabouts in-process, remaining heat is from the feed inlet position loss of furnace body to the furnace body outside, leads to a large amount of losses of heat, has reduced thermal utilization ratio.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a reduce burning furnace over a slow fire of heat loss to reach the effect that improves the thermal utilization ratio of burning furnace over a slow fire.
The technical purpose of the utility model is realized through following technical scheme:
a roasting furnace capable of reducing heat loss comprises a furnace body, wherein a feed inlet is formed in the top end of the furnace body, a discharge outlet is formed in the bottom of the furnace body, a boiling component is arranged inside the furnace body and comprises a fan and an air box, the air box is located inside the furnace body and fixedly connected with the inner wall of the furnace body, the air box is provided with a plurality of sand leakage holes vertically penetrating through the air box, the sand leakage holes are not communicated with the inside of the air box, the upper surface of the air box is provided with a plurality of boiling columns, the boiling columns are communicated with the inside of the air box, and the top ends; the fan is fixedly arranged on the outer side of the furnace body and is communicated with the air box inside the furnace body, the heating device is fixedly arranged on the outer wall of the furnace body and is arranged at the position below the boiling component, and the heating device is communicated with the inside of the furnace body; the furnace body is internally provided with a thermocouple.
According to the technical scheme, precoated sand needing to be heated and demoulded is added into the furnace body from the feeding hole, the fan blows air into the air box, the air flows along the boiling column from the air box and finally enters the inner wall of the furnace body from the air outlet, so that the precoated sand in the furnace body is driven to turn, the precoated sand uniformly penetrates through the top of the sand leakage hole and reaches the bottom of the air box, the heating device at the bottom of the air box heats the precoated sand flowing out of the sand leakage hole by one kilogram, the precoated sand is fully contacted with high-temperature gas in the furnace body, the heating effect is improved, the heated precoated sand is accumulated at the bottom of the furnace body, at the moment, the residual heat of the heating device can continuously heat the precoated sand at the bottom of the furnace body, the heating time of the precoated sand is prolonged, and the utilization rate of heat emitted by the heating device is improved; when retrieving the tectorial membrane sand, the inside thermocouple that sets up of furnace body, the thermocouple has simple structure, and measuring range is wide, the precision is high, output signal is convenient for advantages such as teletransmission, adopts the thermocouple to measure and monitor the temperature in the furnace body, improves the control to the heating of tectorial membrane sand, further improves the recovery effect of tectorial membrane sand, and then improves the recovery effect and the recovery efficiency of tectorial membrane sand.
The utility model discloses further set up to: the thermocouple is at least provided with four, and one of them thermocouple sets up in the position department that the furnace body is close to the feed inlet, and a thermocouple sets up in the position department that flushes with the boiling column, and a thermocouple sets up in the position department that flushes with heating device, and a thermocouple sets up in the position department that is close to the discharge gate.
Through above-mentioned technical scheme, be close to the feed inlet at the furnace body, flush with the boiling column, flush with heating device and be close to the position department of discharge gate and set up the thermocouple respectively, strengthen entering into the measurement and the control of the temperature of furnace body different positions department to the tectorial membrane sand, ensure that the heating effect of temperature in the furnace body to the tectorial membrane sand improves the recovery effect and the recovery efficiency of tectorial membrane sand.
The utility model discloses further set up to: the furnace body is provided with a fire-resistant layer, a heat-insulating layer and a heat-insulating layer from inside to outside in sequence.
Through above-mentioned technical scheme, the direct high-temperature gas direct contact in direct and the furnace body of flame retardant coating, its fire behavior is especially important, and heat preservation and insulating layer can improve the heat preservation ability of furnace body, and the heat that reduces the furnace body inside scatters and disappears for the heating environment of tectorial membrane sand obtains effective the guarantee, and, the insulating layer can effectively completely cut off the high temperature in the furnace body, prevents that the staff from being scalded.
The utility model discloses further set up to: the fire-resistant layer is made of heavy bricks.
Through the technical scheme, the heavy brick has high mechanical strength, strong high temperature resistance (the highest heat-resistant temperature can reach 1900 ℃), long service cycle and good chemical stability, and does not chemically react with materials, so that the heating environment of the precoated sand in the furnace body can be effectively guaranteed by adopting the heavy brick as the fire-resistant layer, and the precoated sand cannot be polluted by impurities generated at high temperature.
The utility model discloses further set up to: the heat preservation layer is made of light bricks.
Through the technical scheme, the light brick is a light heat-insulating material, has good heat-insulating capacity and fire resistance (the fire resistance is about 1400 ℃), and the heat-insulating capacity of the furnace body can be improved and heat loss can be reduced by adopting the heat-insulating layer made of the light brick.
The utility model discloses further set up to: the heat insulating layer is made of calcium silicate.
Through the technical scheme, the calcium silicate board is a novel green building material, has superior fireproof performance and heat preservation capability, further reduces heat loss in the furnace body, and protects workers from being scalded.
To sum up, the utility model discloses a beneficial technological effect does:
1. the heating device is arranged at the lower position of the boiling assembly, so that the heating device can heat the precoated sand in the sand leakage hole and heat the precoated sand accumulated at the bottom of the furnace body, the heating time of the precoated sand is prolonged, and the utilization rate of heat emitted by the heating device is improved;
2. the thermocouple is respectively arranged at the positions of the furnace body close to the feeding hole, flush with the boiling column, flush with the heating device and close to the discharging hole, so that the measurement and monitoring of the temperature of the precoated sand entering different positions of the furnace body are enhanced, the heating effect of the temperature in the furnace body on the precoated sand is ensured, and the recovery effect and the recovery efficiency of the precoated sand are improved;
3. through having set gradually flame retardant coating, heat preservation and insulating layer from inside to outside at the furnace body, the flame retardant coating is direct and the furnace body in the high-temperature gas direct contact, its fire resistance is especially important, heat preservation and insulating layer can improve the heat preservation ability of furnace body, reduce the inside heat of furnace body and scatter and disappear for the heating environment of tectorial membrane sand obtains effective guarantee, and, the insulating layer can effectively completely cut off the high temperature in the furnace body, prevents that the staff from being scalded.
Drawings
FIG. 1 is a schematic view of the overall structure of the present embodiment;
fig. 2 is a sectional view of the present embodiment.
Reference numerals: 1. a furnace body; 11. a feed inlet; 12. a discharge port; 2. a boiling component; 21. a fan; 22. an air box; 221. a sand leakage hole; 222. a boiling column; 2221. an air outlet; 3. a heating device; 4. a thermocouple; 5. a refractory layer; 6. a heat-insulating layer; 7. an insulating layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a roasting furnace capable of reducing heat loss comprises a furnace body 1, a boiling component 2 is arranged inside the furnace body 1, a heating device 3 (see fig. 2) is arranged below the boiling component 2, the heating device 3 heats precoated sand flowing out from the boiling component 2, and the residual heat of the heating device 3 can continuously heat the precoated sand at the bottom of the furnace body 1, so that the heating time of the precoated sand is prolonged, the utilization rate of heat emitted by the heating device 3 is improved, and the recovery effect and the recovery efficiency of the precoated sand are improved.
As shown in fig. 2, a discharge hole 12 is formed in the bottom of the furnace body 1, the boiling component 2 is disposed at a middle position inside the furnace body 1, the boiling component 2 includes a fan 21 and a wind box 22, the wind box 22 is located inside the furnace body 1 and is fixedly connected with the inner wall of the furnace body 1, the wind box 22 is provided with a plurality of sand leaking holes 221 vertically penetrating through the wind box 22, the sand leaking holes 221 are not communicated with the inside of the wind box 22, the upper surface of the wind box 22 is provided with a plurality of boiling columns 222, the boiling columns 222 are communicated with the inside of the wind box 22, and the top ends of the boiling columns 222 are provided with a plurality; the fan 21 is fixedly arranged on the outer side of the furnace body 1 and communicated with the air box 22 in the furnace body 1, the heating device 3 is fixedly arranged on the outer wall of the furnace body 1 at the position below the boiling component 2, the heating device 3 is communicated with the interior of the furnace body 1, precoated sand needing to be heated and demoulded is added into the furnace body 1 from the feed inlet 11, the fan 21 blows air into the air box 22, the air flows along the boiling column 222 from the air box 22 and finally enters the inner wall of the furnace body 1 from the air outlet 2221, so that the precoated sand in the furnace body 1 is driven to turn over, the precoated sand uniformly penetrates through the top of the sand leakage hole 221 and reaches the bottom of the air box 22, the heating device 3 at the bottom of the air box 22 heats the precoated sand flowing out of the sand leakage hole 221 by one kilogram, the precoated sand is made to be fully contacted with high-temperature gas in the furnace body 1, the heating effect is improved, the heated precoated, at this moment, the residual heat of the heating device 3 continuously heats the precoated sand at the bottom of the furnace body 1, so that the heating time of the precoated sand is prolonged, the heat utilization rate is improved, and the recovery effect of the precoated sand is improved.
As shown in figure 2, a thermocouple 4 is arranged inside the furnace body 1, the thermocouple 4 has the advantages of simple structure, wide measurement range, high precision, convenience in remote transmission of output signals and the like, the thermocouple 4 is used for measuring and monitoring the temperature in the furnace body 1, the control of heating the precoated sand is improved, and the recovery effect of the precoated sand is improved. The thermocouple 4 can set up a plurality ofly, the preferred four thermocouples 4 that set up of this embodiment, and one of them thermocouple 4 sets up in the position department that furnace body 1 is close to feed inlet 11, a thermocouple 4 sets up in the position department that flushes with boiling column 222, a thermocouple 4 sets up in the position department that flushes with heating device 3, a thermocouple 4 sets up in the position department that is close to discharge gate 12, be close to feed inlet 11 at furnace body 1, flush with boiling column 222, flush with heating device 3 and set up the thermocouple respectively near the position department of discharge gate 12, strengthen the measurement and the control of the temperature that enters into furnace body 1 different positions department to the tectorial membrane sand, ensure the heating effect of the interior temperature of furnace body 1 to the tectorial membrane sand, further improve the recovery effect and the recovery efficiency of tectorial membrane.
As shown in fig. 2, furnace body 1 has set gradually flame retardant coating 5 from inside to outside, heat preservation 6 and insulating layer 7, flame retardant coating 5 direct and furnace body 1 in the high-temperature gas direct contact, its fire resistance is especially important, heat preservation 6 and insulating layer 7 can improve furnace body 1's heat-preserving capability, reduce the heat of furnace body 1 inside and scatter and disappear for the heating environment of tectorial membrane sand obtains effective guarantee, and, insulating layer 7 can effectively isolated the high temperature in the furnace body 1, prevents that the staff from being scalded.
The fire-resistant layer 5 is made of heavy bricks, and the heavy bricks are high in mechanical strength, high in high-temperature resistance (the highest heat-resistant temperature can reach 1900 ℃), long in service cycle and good in chemical stability and do not chemically react with materials, so that the fire-resistant layer 5 adopts the heavy bricks, the heating environment of the precoated sand in the furnace body 1 can be effectively guaranteed, and impurities cannot be generated at high temperature to pollute the precoated sand; the heat-insulating layer 6 is made of light bricks, the light bricks are light heat-insulating materials and have good heat-insulating capacity and fire resistance (the fire resistance is about 1400 ℃), and the heat-insulating capacity of the furnace body 1 can be improved and heat loss can be reduced by adopting the heat-insulating layer 6 made of the light bricks; the heat insulating layer 7 is made of calcium silicate, and the calcium silicate board is a novel green environment-friendly building material, has excellent fireproof performance and heat-insulating capacity, further reduces heat loss in the furnace body 1, and protects workers from being scalded.
The implementation principle of the embodiment is as follows: when the roasting furnace for reducing heat loss is used for heating and demoulding the precoated sand, the precoated sand is added into the furnace body 1 from the feed inlet 11, the fan 21 blows air into the air box 22, the air flows from the air box 22 along the boiling column 222 and finally enters the inner wall of the furnace body 1 from the air outlet 2221, thereby driving the precoated sand in the furnace body 1 to turn over, leading the precoated sand to uniformly penetrate through the top of the sand leakage hole 221 and reach the bottom of the air box 22, heating the precoated sand flowing out of the sand leakage hole 221 from the sand leakage hole 221 by the heating device 3 at the bottom of the air box 22, the precoated sand is fully contacted with the high-temperature gas in the furnace body 1, the heating effect is improved, the heated precoated sand is accumulated at the bottom of the furnace body 1, and the residual heat of the heating device 3 continuously heats the precoated sand at the bottom of the furnace body 1, so that the heating time of the precoated sand is prolonged, and the utilization rate of heat is improved; the thermocouple 4 is arranged at the position of the furnace body 1, which is close to the feed inlet 11, is flush with the boiling column 222, is flush with the heating device 3 and is close to the discharge outlet 12, so that the measurement and monitoring of the temperature of the precoated sand entering different positions of the furnace body 1 are enhanced, the heating effect of the temperature in the furnace body 1 on the precoated sand is ensured, and the recovery effect and the recovery efficiency of the precoated sand are further improved.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (6)
1. The utility model provides a reduce burning furnace over a slow fire of heat loss, including furnace body (1), feed inlet (11) have been seted up on the top of furnace body (1), discharge gate (12) have been seted up to the bottom of furnace body (1), furnace body (1) inside is provided with boiling subassembly (2), boiling subassembly (2) include fan (21) and bellows (22), bellows (22) are located inside furnace body (1) and with the inner wall fixed connection of furnace body (1), bellows (22) are seted up a plurality of sand leaking holes (221) that vertically run through bellows (22), sand leaking hole (221) and bellows (22) inside do not communicate, the upper surface of bellows (22) is provided with a plurality of boiling columns (222), boiling column (222) and bellows (22) inside are linked together, and the top of boiling column (222) is seted up a plurality of air outlets (2221); fan (21) set firmly in the outside of furnace body (1) and be linked together with inside bellows (22) of furnace body (1), its characterized in that: the heating device (3) is fixedly arranged on the outer wall of the furnace body (1), the heating device (3) is arranged at the position below the boiling component (2), and the heating device (3) is communicated with the interior of the furnace body (1); a thermocouple (4) is arranged in the furnace body (1).
2. A furnace according to claim 1 wherein the furnace further comprises: the heating furnace is characterized in that the number of the thermocouples (4) is at least four, one thermocouple (4) is arranged at the position, close to the feeding hole (11), of the furnace body (1), one thermocouple (4) is arranged at the position flush with the boiling column (222), one thermocouple (4) is arranged at the position flush with the heating device (3), and one thermocouple (4) is arranged at the position close to the discharging hole (12).
3. A furnace according to claim 1 wherein the furnace further comprises: the furnace body (1) is provided with a fire-resistant layer (5), a heat-insulating layer (6) and a heat-insulating layer (7) from inside to outside in sequence.
4. A furnace according to claim 3 wherein the furnace further comprises: the fire-resistant layer (5) is made of heavy bricks.
5. A furnace according to claim 3 wherein the furnace further comprises: the heat-insulating layer (6) is made of light bricks (6).
6. A furnace according to claim 3 wherein the furnace further comprises: the heat insulation layer (7) is a heat insulation layer (7) made of calcium silicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020337340.4U CN211876727U (en) | 2020-03-18 | 2020-03-18 | Roasting furnace capable of reducing heat loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020337340.4U CN211876727U (en) | 2020-03-18 | 2020-03-18 | Roasting furnace capable of reducing heat loss |
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| Publication Number | Publication Date |
|---|---|
| CN211876727U true CN211876727U (en) | 2020-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020337340.4U Active CN211876727U (en) | 2020-03-18 | 2020-03-18 | Roasting furnace capable of reducing heat loss |
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| Country | Link |
|---|---|
| CN (1) | CN211876727U (en) |
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2020
- 2020-03-18 CN CN202020337340.4U patent/CN211876727U/en active Active
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