CN114812183B - Precoated sand regenerating furnace capable of utilizing heat - Google Patents
Precoated sand regenerating furnace capable of utilizing heat Download PDFInfo
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- CN114812183B CN114812183B CN202210426718.1A CN202210426718A CN114812183B CN 114812183 B CN114812183 B CN 114812183B CN 202210426718 A CN202210426718 A CN 202210426718A CN 114812183 B CN114812183 B CN 114812183B
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- preheating
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- 239000004576 sand Substances 0.000 title claims abstract description 152
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 32
- 238000004064 recycling Methods 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 239000002912 waste gas Substances 0.000 claims description 40
- 238000011084 recovery Methods 0.000 claims description 37
- 230000008929 regeneration Effects 0.000 claims description 27
- 238000011069 regeneration method Methods 0.000 claims description 27
- 238000000926 separation method Methods 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 10
- 229920000742 Cotton Polymers 0.000 claims description 9
- 239000011449 brick Substances 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 5
- 210000002489 tectorial membrane Anatomy 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 8
- 238000009826 distribution Methods 0.000 description 7
- 238000009413 insulation Methods 0.000 description 6
- 238000005266 casting Methods 0.000 description 4
- 230000007306 turnover Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
- F27D13/002—Preheating scrap
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Furnace Details (AREA)
Abstract
The invention discloses a precoated sand regenerating furnace capable of utilizing heat, which relates to the field of precoated sand regenerating furnaces and comprises a used sand recycling mechanism, an air preheating mechanism and a used sand feeding preheating mechanism, wherein the used sand recycling mechanism comprises a regenerating furnace main body, a mounting seat and a wind dividing pipe, two side walls of the regenerating furnace main body are respectively provided with a discharge port and a reserved pipe of a burner, and an air outlet and a discharge port are formed in the top of the regenerating furnace main body.
Description
Technical Field
The invention belongs to the field of precoated sand regenerating ovens, and particularly relates to a precoated sand regenerating oven capable of utilizing heat.
Background
The precoated sand recycling furnace is mainly applied to precoated sand, namely, sand or core sand coated with a layer of solid resin film on the surface of sand grains before molding, and is particularly suitable for complex thin-wall precise iron castings and high-requirement steel castings.
The precoated sand recycling furnace is based on the precoated sand recycling industry, and along with the continuous improvement and cost reduction of casting quality requirements, energy conservation and pollution reduction production and development requirements, the production of the precoated sand recycling furnace becomes a development focus of the casting industry.
The precoated sand recycling furnace can generate a large amount of hot waste gas in the process of recycling the precoated sand, and the hot waste gas is directly discharged into the atmosphere after dust removal, and the direct discharge is undoubtedly the waste of heat energy due to the fact that the hot waste gas has higher heat, so that the production and manufacturing cost of enterprises is indirectly increased.
Therefore, we propose a precoated sand recycling furnace capable of utilizing heat to solve the above problems.
Disclosure of Invention
Aiming at the problems that the prior precoated sand recycling furnace cannot recycle hot waste gas in the process of recycling the precoated sand, so that heat energy is wasted and the production and manufacturing cost of enterprises is indirectly increased, the invention provides the precoated sand recycling furnace capable of utilizing heat.
The invention solves the technical problems by adopting the scheme that: a precoated sand regenerating furnace capable of utilizing heat, which comprises a used sand recycling mechanism, an air preheating mechanism and a used sand feeding preheating mechanism,
The used sand recycling mechanism comprises a regeneration furnace main body, a mounting seat and a wind dividing pipe, wherein two side walls of the regeneration furnace main body are respectively provided with a discharge hole and a reserved pipe of a burner, and the top of the regeneration furnace main body is provided with an air outlet and a discharge hole; the installation seat is installed in the regeneration furnace main part inner chamber downside in a matching way, and the branch tuber pipe is installed in the inner wall bottom of regeneration furnace main part, and N fixed pipes are installed to one side of branch tuber pipe, installs M hood on the fixed pipe, and the air-out end of hood is located the upside of installation seat.
The air preheating mechanism comprises a heat energy recovery box, a fan and an air preheating pipeline, wherein the bottom of the heat energy recovery box is provided with an opening and corresponds to the air outlet, the heat energy recovery box is fixedly connected to the top of the main body of the regenerating furnace, the fan is arranged on one side of the main body of the regenerating furnace, the fan is connected with the air inlet end of the air preheating pipeline, and the air outlet end of the air preheating pipeline penetrates out of the heat energy recovery box and is connected with the air inlet end of the air dividing pipe.
The old sand feeding preheating mechanism comprises an old sand preheating hopper, a heat conducting pipe fitting and an exhaust gas utilization pipe, wherein a feeding pipe is arranged at the feeding end of the old sand preheating hopper, an automatic discharge valve is arranged at the discharging end of the old sand preheating hopper, the automatic discharge valve is arranged at the top of the main body of the regenerating furnace, the discharging end of the automatic discharge valve corresponds to the discharging opening, the heat conducting pipe fitting is arranged in the old sand preheating hopper, the air inlet end of the heat conducting pipe fitting is connected with the air outlet end of the heat energy recovery box through the exhaust gas utilization pipe, and a dust removing pipe is arranged at the air outlet end of the heat conducting pipe fitting.
As a preferable technical scheme of the invention, the regeneration furnace main body comprises a refractory brick layer, wherein a heat-insulating cotton layer is arranged on the outer side of the refractory brick layer, and a heat-insulating shell is arranged on the outer side of the heat-insulating cotton layer.
As a preferable technical scheme of the invention, the hood comprises a conical hood and an air inlet pipe, wherein the bottom end of the air inlet pipe passes through the mounting seat and is mounted on the fixed pipe, the conical hood is fixedly mounted on the top end of the air inlet pipe, H obliquely arranged air channels are formed in the conical hood, and the air channels are communicated with the air inlet pipe.
As a preferable technical scheme of the invention, the heat-conducting pipe fitting comprises an exhaust gas inlet and outlet box and an air sand separation box which are arranged in parallel, wherein the exhaust gas inlet and outlet box and the air sand separation box are fixedly arranged in the used sand preheating hopper, a partition plate is arranged in the exhaust gas inlet and outlet box, the inner cavity of the exhaust gas inlet and outlet box is divided into an air inlet cavity and an air outlet cavity by the partition plate, the air inlet cavity and the air outlet cavity are respectively connected with an exhaust gas utilization pipe and a dust removal pipe, and the air inlet cavity and the air outlet cavity are both communicated with the air sand separation box through two heat-conducting pipes.
As a preferable technical scheme of the invention, the front side and the rear side of the inner wall of the old sand preheating hopper are respectively provided with three material guide plates, and the material guide plates are obliquely arranged on the lower side of the heat conducting pipe.
As a preferable technical scheme of the invention, the bottom end of the gas-sand separation box is provided with a sand recovery pipe, and the other end of the sand recovery pipe penetrates through the old sand preheating hopper and is communicated with a sand recovery port formed in the side wall of the main body of the regenerating furnace.
As a preferable technical scheme of the invention, the right side wall of the regenerating oven main body is provided with an access door, and the front side wall of the regenerating oven main body is provided with an observation door.
As a preferable technical scheme of the invention, the air preheating pipeline comprises a heat conduction coil pipe, a preheating air inlet pipe and a hot air outlet pipe, wherein two ends of the preheating air inlet pipe are respectively connected with a fan and the heat conduction coil pipe, the heat conduction coil pipe is arranged in a heat energy recovery box, and an air outlet end of the heat conduction coil pipe is connected with an air inlet end of the air distribution pipe through the hot air outlet pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the invention, the heat energy recovery box and the heat conduction coil are arranged, the air is sucked through the fan and enters the heat conduction coil through the preheating air inlet pipe, and when the air circulates in the heat conduction coil, the hot waste gas in the heat energy recovery box preheats the air so as to improve the temperature of the air, the preheated air enters the air distribution pipe and the fixed pipe through the hot air outlet pipe and is blown out by the hood, and the hot air is blown out by the hood, so that the temperature in the main body of the regenerating furnace is not reduced, the heating time of sand is further shortened, the heating efficiency is improved, the hot waste gas is reasonably utilized, and the production and manufacturing cost of enterprises is saved.
2. According to the invention, the heat conducting pipe fittings are arranged in the used sand preheating hopper, so that when the hot waste gas circulates in the four heat conducting pipes, sand materials in the used sand preheating hopper can be preheated, the temperature of sand is increased, the heating time of the sand in the main body of the regenerating furnace is shortened, the recycling efficiency of the sand is improved, and the hot waste gas is further recycled.
3. According to the invention, the gas-sand separation box and the sand recovery pipe are arranged, when the sand particles are mixed with hot waste gas to circulate in the gas-sand separation box, the sand falls down under the gravity of the waste gas and enters the sand recovery pipe, and the waste gas flows out through the two heat conduction pipes at the lower layer, so that gas-sand separation is realized, and the sand enters the main body of the regenerating furnace again through the sand recovery pipe, so that the sand waste is avoided, and the purposes of reducing the cost and saving the energy are achieved.
4. According to the invention, the two material guide plates are arranged on the lower side of the heat conducting pipe, and after sand falls from the upper layer, the sand falls onto the lower layer of the heat conducting pipe again to contact the lower layer of the heat conducting pipe under the action of the two material guide plates, so that the sand sequentially contacts the four heat conducting pipes from top to bottom, the contact time of the sand and the heat conducting pipes is prolonged, and the preheating effect is improved.
5. According to the invention, the air duct is obliquely arranged, so that the air outlet at the bottom of the conical cap blows up and flows the sand, the sand is heated more uniformly, and meanwhile, the air duct is obliquely arranged, so that the sand is inconvenient to enter the air duct, and the problem of air duct blockage is avoided.
6. According to the invention, the fireproof brick layer, the heat-insulating cotton layer and the heat-insulating shell are arranged, so that the main body of the regenerating furnace has good sealing property, the heat loss is reduced, the heating efficiency of sand is further improved, and the production cost is reduced.
Drawings
FIG. 1 is a schematic front perspective view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic rear perspective view of the present invention;
FIG. 4 is a schematic cross-sectional elevation view of the present invention;
FIG. 5 is a schematic top view of the present invention;
FIG. 6 is a schematic perspective view of a heat conducting pipe fitting according to the present invention;
FIG. 7 is an enlarged schematic view of the front cross-section of the hood according to the present invention;
FIG. 8 is a perspective enlarged schematic view of the hood according to the present invention;
FIG. 9 is an enlarged schematic view of the sectional view of the furnace wall of the main body of the regenerator according to the present invention;
Fig. 10 is a schematic diagram of a right-side cross-sectional structure of the sand preheating hopper of the present invention.
In the figure: 1a regenerating furnace main body, 101 a heat preservation cotton layer, 102a refractory brick layer, 603 a heat insulation shell, 2a viewing door, 3 an access door, 41 a used sand preheating hopper, 42 a waste gas utilization pipe, 43 a dust removal pipe, 44 an automatic discharge valve, 45 a gas sand separation box, 46 a heat conduction pipe, 47 a waste gas inlet and outlet box, 48 a partition plate, 49 a guide plate, 5a feeding pipe, 61 a heat recovery box, 62 a preheating air inlet pipe, 63 a fan, 64 a hot air outlet pipe, 65 a heat conduction coil pipe, 7a discharge port, 8a sand recovery pipe, 9a combustion engine reserved pipe, 10 a fixed pipe, 11 a mounting seat, 12a blast cap, 121 a conical cap, 122 an air flue, 123 an air inlet pipe and 13a branch air pipe.
Detailed Description
The invention will be further described with reference to the drawings and examples.
Referring to fig. 1-10, the invention provides a technical scheme of a precoated sand recycling furnace capable of utilizing heat, which comprises the following steps:
embodiment one:
according to the illustrations of fig. 1-6, including used sand recycling mechanisms, wind preheating mechanisms and used sand feed preheating mechanisms,
The old sand recycling mechanism comprises a regeneration furnace main body 1, a mounting seat 11 and a branch air pipe 13, wherein a discharge hole 7 is formed in the left side wall of the regeneration furnace main body 1, a reserved pipe 9 of a rear side wall combustor of the regeneration furnace main body 1 is arranged, an access door 3 capable of opening and closing is arranged on the right side wall of the regeneration furnace main body 1, an observation door 2 capable of opening and closing is arranged on the front side wall of the regeneration furnace main body 1, and an air outlet and a discharge hole are formed in the top of the regeneration furnace main body 1.
The installation seat 11 is installed on the lower side of the inner cavity of the regeneration furnace main body 1 in a matching mode, the air distribution pipe 13 is installed at the bottom of the inner wall of the regeneration furnace main body 1, N fixed pipes 10 are installed on one side of the air distribution pipe 13, M air caps 12 are installed on the fixed pipes 10, and the air outlet end of each air cap 12 is located on the upper side of the installation seat 11.
The wind preheats mechanism and includes heat recovery case 61, fan 63 and wind preheating line, and the bottom of heat recovery case 61 sets up for uncovered and corresponds with the air outlet, and heat recovery case 61 fixed connection is at the top of regenerator main part 1, and its effect lies in: the hot waste gas generated in the regeneration furnace main body 1 enters the heat recovery box 61 through the air outlet, the outflow of the hot waste gas is avoided, the fan 63 is arranged on one side of the regeneration furnace main body 1, the air preheating pipeline comprises a heat conduction coil pipe 65, a preheating air inlet pipe 62 and a hot air outlet pipe 64, two ends of the preheating air inlet pipe 62 are respectively connected with the fan 63 and the heat conduction coil pipe 65, the heat conduction coil pipe 65 is arranged in the heat recovery box 61, the air outlet end of the heat conduction coil pipe 65 is connected with the air inlet end of the air distribution pipe 13 through the hot air outlet pipe 64, the heat recovery box 61 and the heat conduction coil pipe 65 are arranged, air is sucked into the heat recovery box 61 through the fan 63 and enters the heat conduction coil pipe 65 through the preheating air inlet pipe 62, when the air circulates in the heat conduction coil pipe 65, the hot waste gas in the heat recovery box 61 preheats the air to improve the temperature of the air, the preheated air enters the air distribution pipe 13 and the fixed pipe 10 through the hot air outlet pipe 64 and is blown out by the air cap 12, the temperature in the regeneration furnace main body 1 is not reduced, the heating time of sand is further shortened, the heating efficiency is improved, the reasonable utilization of the waste gas is further, and the manufacturing cost of the manufacturing enterprises is saved.
The old sand feeding preheating mechanism comprises an old sand preheating hopper 41, a heat conducting pipe fitting and a waste gas utilization pipe 42, wherein a feeding pipe 5 is arranged at the feeding end of the old sand preheating hopper 41, an automatic discharge valve 44 is arranged at the discharging end of the old sand preheating hopper, the automatic discharge valve 44 is arranged at the top of the regeneration furnace main body 1, the discharging end of the automatic discharge valve 44 corresponds to a discharging hole, and workers can conveniently control the discharging of the old sand preheating hopper 41 through the automatic discharge valve 44.
The heat conduction pipe fitting includes parallel arrangement's waste gas business turn over case 47 and air sand separation case 45, waste gas business turn over case 47 and air sand separation case 45 are all fixed mounting in old sand preheating hopper 41, install baffle 48 in the waste gas business turn over case 47, baffle 48 separates waste gas business turn over case 47 inner chamber into the air inlet chamber and go out the air cavity, the air inlet chamber and go out the air cavity respectively with the waste gas utilization pipe 42 and the connection of dust removal pipe 43, the air inlet chamber and go out the air cavity all communicates with air sand separation case 45 through two heat conduction pipes 46, through setting up the heat conduction pipe fitting in old sand preheating hopper 41, when the hot waste gas circulates in four heat conduction pipes 46, can preheat the sand material in the old sand preheating hopper 41, improve the temperature of sand self, in order to reduce the heating time of sand in regenerator main part 1, improve the recovery efficiency of sand, further carry out recycle to hot waste gas.
When the precoated sand regenerating furnace capable of utilizing heat is particularly used, firstly, the feed pipe 5 is connected with the discharge end of old sand conveying equipment, the reserved pipe 9 of the burner is connected with the burner, the discharge port 7 is connected with collecting equipment, and the dust removing pipe 43 is connected with dust removing equipment;
Then starting a burner, a fan 63 and used sand conveying equipment, wherein the burner heats the inner cavity of the regeneration furnace main body 1, hot waste gas in the regeneration furnace main body 1 enters the heat energy recovery box 61 through a wind gap, the hot waste gas enters the waste gas inlet and outlet box 47, the gas sand separation box 45 and the four heat-conducting pipes 46 through the waste gas utilization pipe 42 and is discharged through the dust removal pipe 43, sand enters the used sand preheating hopper 41 through the feed pipe 5, when the used sand preheating hopper 41 falls, the sand contacts with the four heat-conducting pipes 46, sand materials in the used sand preheating hopper 41 are preheated through the heat-conducting pipes 46, the temperature of the sand is increased, and the sand enters the regeneration furnace main body 1 through the automatic discharge valve 44 after being preheated;
The fan 63 sucks wind and enters the heat conduction coil 65 through the preheating air inlet pipe 62, when the wind circulates in the heat conduction coil 65, hot waste gas in the heat energy recovery box 61 preheats the wind so as to increase the temperature of the wind, the preheated wind enters the air distribution pipe 13 and the fixed pipe 10 through the hot air outlet pipe 64 and is blown out by the blast cap 12, and the blast cap 12 blows up the sand to flow so as to heat the sand;
finally, the heated sand is discharged through a discharge hole 7.
Embodiment two:
On the basis of the first embodiment, as shown in fig. 3, a sand recovery pipe 8 is installed at the bottom end of a gas-sand separation box 45, the other end of the sand recovery pipe 8 passes through a used sand preheating hopper 41 and is communicated with a sand recovery port formed in the rear side wall of a regeneration furnace main body 1, when hot waste gas is mixed with sand grains flowing in the gas-sand separation box 45, the sand falls down under the gravity of the waste gas and enters the sand recovery pipe 8, the waste gas flows out through two heat conducting pipes 46 at the lower layer, then gas-sand separation is realized, and the sand enters the regeneration furnace main body 1 again through the sand recovery pipe 8, so that the waste of the sand is avoided, and the purposes of reducing the cost and saving energy are achieved.
Embodiment III:
On the basis of the first embodiment, as shown in fig. 7 and 8, the hood 12 comprises a conical cap 121 and an air inlet pipe 123, the bottom end of the air inlet pipe 123 is installed on the fixed pipe 10 through the installation seat 11, the conical cap 121 is fixedly installed at the top end of the air inlet pipe 123, the conical cap 121 is internally provided with H obliquely arranged air channels 122, the air channels 122 are communicated with the air inlet pipe 123, and the air channels 122 are obliquely arranged, so that the bottom of the conical cap 121 is air-out to blow up and flow sand, so that the sand is heated more uniformly, and meanwhile, the air channels 122 are obliquely arranged, so that the sand is inconvenient to enter the air channels 122, thereby avoiding the problem of blocking the air channels 122.
Embodiment four:
On the basis of the first embodiment, as shown in fig. 9, the regenerating oven main body 1 comprises a refractory brick layer 102, a heat insulation cotton layer 101 is arranged on the outer side of the refractory brick layer 102, a heat insulation shell 103 is arranged on the outer side of the heat insulation cotton layer 101, and the refractory brick layer 102, the heat insulation cotton layer 101 and the heat insulation shell 103 are arranged, so that the regenerating oven main body 1 has good sealing performance, the heat loss is reduced, the heating efficiency of sand is further improved, and the production cost is reduced.
Fifth embodiment:
On the basis of the first embodiment, as shown in fig. 10, three material guiding plates 49 are installed on the front side of the inner wall and the rear side of the inner wall of the old sand preheating hopper 41, the material guiding plates 49 are obliquely arranged on the lower side of the heat conducting pipe 46, and after sand falls down from the upper layer, the sand falls down onto the lower layer of the heat conducting pipe 46 again to contact with the lower layer of the heat conducting pipe 46 under the action of the two material guiding plates 49, so that the sand sequentially contacts with the four heat conducting pipes 46 from top to bottom, the contact time of the sand and the heat conducting pipes 46 is prolonged, and the preheating effect is improved.
Claims (6)
1. The utility model provides a tectorial membrane sand regenerator that can heat utilization which characterized in that: comprises a used sand recycling mechanism, an air preheating mechanism and a used sand feeding preheating mechanism,
The used sand recycling mechanism comprises a regeneration furnace main body, a mounting seat and a wind dividing pipe, wherein two side walls of the regeneration furnace main body are respectively provided with a discharge hole and a combustor reserved pipe, and the top of the regeneration furnace main body is provided with an air outlet and a discharge hole; the installation seat is arranged at the lower side of the inner cavity of the main body of the regenerating furnace in a matching way, the air dividing pipe is arranged at the bottom of the inner wall of the main body of the regenerating furnace, N fixed pipes are arranged at one side of the air dividing pipe, M air caps are arranged on the fixed pipes, and the air outlet ends of the air caps are positioned at the upper side of the installation seat;
The air preheating mechanism comprises a heat energy recovery box, a fan and an air preheating pipeline, wherein the bottom of the heat energy recovery box is arranged in an open mode and corresponds to the air outlet, the heat energy recovery box is fixedly connected to the top of the main body of the regenerating furnace, the fan is arranged on one side of the main body of the regenerating furnace, the fan is connected with the air inlet end of the air preheating pipeline, and the air outlet end of the air preheating pipeline penetrates out of the heat energy recovery box and is connected with the air inlet end of the air dividing pipe;
The old sand feeding preheating mechanism comprises an old sand preheating hopper, a heat conducting pipe fitting and a waste gas utilization pipe, wherein a feeding pipe is arranged at the feeding end of the old sand preheating hopper, an automatic discharge valve is arranged at the discharging end of the old sand preheating hopper, the automatic discharge valve is arranged at the top of the main body of the regenerating furnace, and the discharging end of the automatic discharge valve corresponds to the discharging opening;
The waste gas preheating device is characterized in that the heat conducting pipe fitting is arranged in the used sand preheating hopper, the heat conducting pipe fitting comprises a waste gas inlet and outlet box and a gas sand separation box which are arranged in parallel, the waste gas inlet and outlet box and the gas sand separation box are fixedly arranged in the used sand preheating hopper, a partition plate is arranged in the waste gas inlet and outlet box, the waste gas inlet and outlet box inner cavity is divided into an air inlet cavity and an air outlet cavity by the partition plate, the air inlet cavity and the air outlet cavity are respectively connected with a waste gas utilization pipe and a dust removing pipe, the air inlet cavity and the air outlet cavity are both communicated with the gas sand separation box through two heat conducting pipes, a sand recycling pipe is arranged at the bottom end of the gas sand separation box, and the other end of the sand recycling pipe penetrates through the used sand preheating hopper and is communicated with a sand recycling port formed in the side wall of the main body of the regenerating furnace.
2. The coated sand recycling furnace capable of utilizing heat according to claim 1, wherein: the regeneration furnace main body comprises a refractory brick layer, wherein a heat-insulating cotton layer is arranged on the outer side of the refractory brick layer, and a heat-insulating shell is arranged on the outer side of the heat-insulating cotton layer.
3. The coated sand recycling furnace capable of utilizing heat according to claim 1, wherein: the blast cap comprises a conical cap and an air inlet pipe, the bottom end of the air inlet pipe penetrates through the mounting seat to be mounted on the fixed pipe, the conical cap is fixedly mounted on the top end of the air inlet pipe, H obliquely-arranged air channels are formed in the conical cap, and the air channels are communicated with the air inlet pipe.
4. The coated sand recycling furnace capable of utilizing heat according to claim 1, wherein: and the front side and the rear side of the inner wall of the used sand preheating hopper are respectively provided with three material guide plates, and the material guide plates are obliquely arranged on the lower side of the heat conduction pipe.
5. The coated sand recycling furnace capable of utilizing heat according to claim 1, wherein: the right side wall of the regenerating oven main body is provided with an access door, and the front side wall of the regenerating oven main body is provided with an observation door.
6. The coated sand recycling furnace capable of utilizing heat according to claim 1, wherein: the wind preheating pipeline comprises a heat conduction coil pipe, a preheating air inlet pipe and a hot air outlet pipe, wherein two ends of the preheating air inlet pipe are respectively connected with the fan and the heat conduction coil pipe, the heat conduction coil pipe is arranged in the heat energy recovery box, and the air outlet end of the heat conduction coil pipe is connected with the air inlet end of the air dividing pipe through the hot air outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210426718.1A CN114812183B (en) | 2022-04-22 | 2022-04-22 | Precoated sand regenerating furnace capable of utilizing heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210426718.1A CN114812183B (en) | 2022-04-22 | 2022-04-22 | Precoated sand regenerating furnace capable of utilizing heat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114812183A CN114812183A (en) | 2022-07-29 |
| CN114812183B true CN114812183B (en) | 2024-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210426718.1A Active CN114812183B (en) | 2022-04-22 | 2022-04-22 | Precoated sand regenerating furnace capable of utilizing heat |
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| CN214747205U (en) * | 2021-03-16 | 2021-11-16 | 昆明万亨科技有限公司 | Roasting furnace of step heating fluidized bed |
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| CN114812183A (en) | 2022-07-29 |
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