CN212870793U - Device for preheating cast iron mold by using sintering flue gas - Google Patents
Device for preheating cast iron mold by using sintering flue gas Download PDFInfo
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- CN212870793U CN212870793U CN202021393664.6U CN202021393664U CN212870793U CN 212870793 U CN212870793 U CN 212870793U CN 202021393664 U CN202021393664 U CN 202021393664U CN 212870793 U CN212870793 U CN 212870793U
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- flue gas
- cast iron
- induced draft
- sintering flue
- preheating
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Abstract
A device for preheating a cast iron mold by using sintering flue gas comprises a draught fan, an induced draft pipeline and a hot air injection part; the air inlet of the induced draft fan is connected with the air outlet of the sintering flue gas purification treatment equipment, and the air outlet of the induced draft fan is connected with the hot air injection component through an induced draft pipeline; hot-blast injection part includes intake pipe, shunt tubes and fumarole, intake pipe bilateral symmetry arranges two sets ofly, and three way connection and induced duct connection are passed through to two sets of intake pipe one end, and the other end is connected with the shunt tubes, the shunt tubes level is arranged, and both ends seal around it, sets up the fumarole at the first side wall of shunt tubes. The utility model discloses not only satisfied the molten iron pouring requirement, reached the life of extension cast iron mould, improved the purpose of the operation security of pig machine, moreover through the recycling of sintering flue gas, reduced manufacturing cost.
Description
Technical Field
The utility model relates to a sintering flue gas recycles device, especially a device that utilizes sintering flue gas to preheat cast iron mould.
Background
In northern areas of China, a cast iron mold preheating facility is arranged below a chain belt of the cast iron machine and is used for preheating the cast iron mold sprayed with mortar in cold weather, so that the blasting phenomenon caused by water storage in the process of pouring molten iron by the cast iron mold is prevented, the service life of the cast iron mold is prolonged by using the cast iron mold preheating facility, and the operation safety of the cast iron machine is improved.
In the prior art, the preheating of the cast iron mold of the iron casting machine is mostly carried out in a medium burning mode, the purpose of preheating the cast iron mold is achieved through flame baking, and due to the fact that the flame baking needs to be provided with an independent operation and detection system, the cost is high in subsequent system maintenance, and once the flame detection system breaks down in the iron casting process, the problem of natural gas and coal gas leakage is easily caused, and major safety accidents are caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides an utilize sintering flue gas to carry out device that preheats to cast iron mould aims at below sintering flue gas drainage to the pig machine chain belt after with purification treatment through the device, preheats the cast iron mould by high temperature sintering flue gas, reaches the purpose that satisfies the molten iron pouring requirement, prolongs the life of cast iron mould, improves the operation security of pig machine.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a device for preheating a cast iron mold by using sintering flue gas comprises a draught fan, an induced draft pipeline and a hot air injection part; the air inlet of the induced draft fan is connected with the air outlet of the sintering flue gas purification treatment equipment, and the air outlet of the induced draft fan is connected with the hot air injection component through an induced draft pipeline; hot-blast injection part includes intake pipe, shunt tubes and fumarole, intake pipe bilateral symmetry arranges two sets ofly, and three way connection and induced duct connection are passed through to two sets of intake pipe one end, and the other end is connected with the shunt tubes, the shunt tubes level is arranged, and both ends seal around it, sets up the fumarole at the first side wall of shunt tubes.
The device for preheating the cast iron mold by using the sintering flue gas is characterized in that the flow dividing pipe is of a split structure and consists of two parts which are symmetrically arranged front and back, the front part and the back part are connected with the air inlet pipe through the three-way joint, each part is a variable cross-section circular pipe, one end connected with the three-way joint is a large-diameter end, and the other end is a small-diameter end, so that a flow guide structure for guiding the sintering flue gas to flow from the large-diameter end to the small-diameter end is formed in the inner cavity of the flow dividing pipe.
According to the device for preheating the cast iron mold by using the sintering flue gas, a plurality of groups of the air injection holes are uniformly arranged along the axial direction of the flow dividing pipe, and the number of each group of the air injection holes is not less than three.
The device for preheating the cast iron mould by using the sintering flue gas is characterized in that a control valve is arranged at an air inlet of the draught fan.
The utility model relates to a device for preheating a cast iron mold by using sintering flue gas, which guides the sintering flue gas after purification treatment to the lower part of a chain belt of a pig machine through an induced draft fan and an induced draft pipeline, and then carries out blowing operation on the cast iron mold on the chain belt of the pig machine which runs circularly through a hot air injection part, after the cast iron mold passes through a blowing operation area, the residual moisture is dried when the cast iron mold is sprayed with mortar, and the cast iron mold is preheated, thereby avoiding the blasting phenomenon in the process of pouring molten iron; because the utility model discloses still design the shunt tubes inner chamber for the guide sintering flue gas is held the water conservancy diversion structure of flow direction minor diameter end by major diameter for sintering flue gas distributes evenly in the shunt tubes inner chamber, has guaranteed the effective area of hot-blast injection part operation of blowing. Therefore, the utility model discloses not only satisfied the molten iron pouring requirement, reached the life of extension cast iron mould, improved the purpose of the operation security of pig machine, moreover through the recycling of sintering flue gas, reduced manufacturing cost.
Drawings
FIG. 1 is a schematic view of an apparatus for preheating a cast iron mold using sintering fumes;
FIG. 2 is a top view of the hot wind ejecting member of FIG. 1;
FIG. 3 is a schematic view (enlarged) of the cross-sectional structure A-A of FIG. 2;
fig. 4 is a schematic view of the working state of the present invention.
The list of labels in the figure is:
1. an induced draft fan; 2. An air inducing duct; 3. 3-1 parts of hot air injection components, 3-2 parts of air inlet pipes, 3-3 parts of flow dividing pipes and 3-3 parts of air injection holes; 4. A control valve; 5. Sintering flue gas purification treatment equipment; 6. A cast iron mold; 7. A chain belt of an iron casting machine.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, the device for preheating the cast iron mold by using the sintering flue gas of the present invention comprises a draught fan 1, an induced air pipeline 2 and a hot air injection component 3; the air inlet of draught fan 1 is connected with the gas vent of sintering gas cleaning treatment facility 5, is equipped with control valve 4 in the air inlet department of draught fan 1, and the air outlet of draught fan, 1 passes through induced air pipeline 2 and connects hot-blast injection part 3.
Referring to fig. 1, 2 and 3, the hot air injection part 3 of the device for preheating the cast iron mold by using the sintering flue gas of the present invention comprises an air inlet pipe 3-1, a shunt pipe 3-2 and an air injection hole 3-3; the air inlet pipes 3-1 are symmetrically arranged in two groups left and right, one end of each of the two groups of air inlet pipes 3-1 is connected with the induced draft pipeline 2 through a three-way joint, and the other end of each of the two groups of air inlet pipes 3-1 is connected with the flow dividing pipe 3-2; the flow dividing pipe 3-2 is a split structure which is horizontally arranged and consists of two parts which are symmetrical front and back, the front part and the back part are connected with the air inlet pipe 3-1 through a three-way joint, each part is a variable cross-section circular pipe, one end connected with the three-way joint is a large-diameter end, the other end is a small-diameter end, a flow guide structure for guiding sintering flue gas to flow from the large-diameter end to the small-diameter end is formed in an inner cavity of the flow dividing pipe 3-2, the small-diameter end is closed, and the side wall of the upper half part of the flow dividing pipe 3-2 is provided with an air injection hole 3.
Referring to fig. 2 and 3, the device for preheating the cast iron mold by using the sintering flue gas of the present invention has a plurality of groups of air injection holes 3-3 on the shunt tube 3-2, which are uniformly arranged along the axial direction of the shunt tube 3-2, wherein the number of the air injection holes in each group is not less than three.
Referring to fig. 4, the device for preheating the iron casting mold by using the sintering flue gas of the present invention, when the device is in an operating state, the sintering flue gas after purification treatment is guided to the lower side of the chain belt 7 of the iron casting machine through the draught fan 1 and the air guide pipeline 2, and then the hot air injection component performs air blowing operation on the iron casting mold 6 on the chain belt 7 of the iron casting machine which circularly runs, after the iron casting mold 6 passes through an air blowing operation area, the residual moisture is dried when the iron casting mold 6 is sprayed with mortar, and the iron casting mold 6 is preheated in the process, so that the blasting phenomenon in the process of pouring molten iron is avoided; because the utility model discloses still design the shunt tubes 3-2 inner chambers for the water conservancy diversion structure of guide sintering flue gas by major diameter end flow to minor diameter end for sintering flue gas distributes evenly in shunt tubes 3-2 inner chambers, has guaranteed the effective area of hot-blast injection part operation of blowing.
Claims (4)
1. A device for preheating a cast iron mold by using sintering flue gas is characterized by comprising an induced draft fan (1), an induced draft pipeline (2) and a hot air injection part (3); an air inlet of the induced draft fan (1) is connected with an air outlet of the sintering flue gas purification treatment equipment (5), and an air outlet of the induced draft fan (1) is connected with the hot air injection component (3) through an induced draft pipeline (2); the hot air injection part (3) comprises air inlet pipes (3-1), flow dividing pipes (3-2) and air injection holes (3-3), the air inlet pipes (3-1) are arranged in a left-right symmetrical mode in two groups, one ends of the two groups of air inlet pipes (3-1) are connected with the air induction pipeline (2) through three-way joints, the other ends of the two groups of air inlet pipes are connected with the flow dividing pipes (3-2), the flow dividing pipes (3-2) are arranged horizontally, the front and the rear ends of the flow dividing pipes are sealed, and the upper side wall of each flow dividing pipe (3-2) is provided with.
2. The apparatus for preheating a cast iron mold using sintering fumes according to claim 1, wherein the bypass pipe (3-2) is a split structure consisting of two parts symmetrically arranged in front and rear, the front and rear parts being connected to the intake pipe (3-1) through a three-way joint, wherein each part is a variable cross-section circular pipe, one end connected to the three-way joint is a large diameter end, and the other end is a small diameter end, thereby forming a flow guide structure in the inner cavity of the bypass pipe (3-2) for guiding the sintering fumes from the large diameter end to the small diameter end.
3. The apparatus for preheating a cast iron mold using sintering fumes as claimed in claim 2, wherein the gas injection holes (3-3) are arranged in groups axially and uniformly along the shunt tube (3-2), each group having not less than three gas injection holes.
4. The device for preheating a cast iron mold by using sintering flue gas as claimed in claim 1, 2 or 3, wherein a control valve (4) is arranged at an air inlet of the induced draft fan (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021393664.6U CN212870793U (en) | 2020-07-15 | 2020-07-15 | Device for preheating cast iron mold by using sintering flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021393664.6U CN212870793U (en) | 2020-07-15 | 2020-07-15 | Device for preheating cast iron mold by using sintering flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212870793U true CN212870793U (en) | 2021-04-02 |
Family
ID=75214989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021393664.6U Expired - Fee Related CN212870793U (en) | 2020-07-15 | 2020-07-15 | Device for preheating cast iron mold by using sintering flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212870793U (en) |
-
2020
- 2020-07-15 CN CN202021393664.6U patent/CN212870793U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210402 |
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| CF01 | Termination of patent right due to non-payment of annual fee |