CN219503679U - Chain belt preheating device of pig machine - Google Patents
Chain belt preheating device of pig machine Download PDFInfo
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- CN219503679U CN219503679U CN202223424978.XU CN202223424978U CN219503679U CN 219503679 U CN219503679 U CN 219503679U CN 202223424978 U CN202223424978 U CN 202223424978U CN 219503679 U CN219503679 U CN 219503679U
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- chain belt
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Abstract
The utility model provides a pig machine chain belt preheating device, can preheat the chain belt to the temperature when normal production when pig machine first time production or shut down when repairing the production, eliminates the quality defects such as gas pocket and slag inclusion that bring for shaping cast iron piece because of the chain belt temperature is low, its characterized in that is including the gas pipeline that is located pig machine lower floor's chain belt below, the nozzle array that has ignition is being distributed on the gas pipeline, pig machine lower floor's chain belt distributes has the chain belt iron mould array of die cavity inversion, and nozzle spout is towards the die cavity of chain belt iron mould.
Description
Technical Field
The utility model relates to the pig machine technology, in particular to a chain belt preheating device of a pig machine.
Background
The pig iron machine is a device for casting pig iron in iron making process, and consists of a circulating chain belt with a series of casting moulds. The iron mould array is distributed on the chain belt of the pig machine, and the molten iron conveying equipment is arranged above the iron mould. The molten iron conveying equipment mainly comprises an iron receiving tank, a launder and a runner nozzle, canned molten iron is poured into the iron receiving tank, flows to the runner nozzles at two sides through the launder, and molten iron is continuously injected into the iron mold through the launder. And (5) completing the cast iron process along with the movement of the chain belt of the pig machine. In the cast iron process, molten iron is injected into an iron mold with temperature, the quality is stable, but when the cast iron machine is first produced after maintenance, the temperature of a chain belt is normal temperature, the iron mold is wet after guniting, and air holes and slag inclusions are formed in or on the surface of a formed cast iron block during high-temperature molten iron injection, so that the product quality is affected. In view of this, the present inventors completed the present utility model to preheat the pig chain belt at the time of first production.
Disclosure of Invention
Aiming at the defects or shortcomings in the prior art, the utility model provides the preheating device for the chain belt of the pig machine, which can preheat the chain belt to the temperature in normal production when the pig machine is produced for the first time or is recovered after shutdown maintenance, and eliminates the quality defects of air holes, slag inclusion and the like caused by low temperature of the chain belt.
The technical scheme of the utility model is as follows:
the preheating device for the chain belt of the pig casting machine is characterized by comprising a gas pipeline positioned below a lower chain belt of the pig casting machine, wherein nozzle arrays with ignition devices are distributed on the gas pipeline, the lower chain belt of the pig casting machine is distributed with a chain belt iron mold array with inverted mold cavities, and nozzle nozzles face the mold cavities of the chain belt iron molds.
The gas pipeline is connected with the gas tank through a gas hose, and the gas hose is provided with a gas valve and a gas flow valve.
The gas inlet end of the gas pipeline is connected with the gas outlet end of the gas hose through a quick connector.
The gas pipeline is connected with a fixed bracket, and the fixed bracket is fixed on a frame of the pig casting machine through a fixed bolt.
The molten iron injection end of the pig machine chain belt is lower than the demoulding end of the cast iron block of the pig machine chain belt.
A tapping hole is formed in the upper portion of the upper chain belt of the pig machine at the molten iron injection end, and a temperature measuring device is arranged on the input side of a chain belt iron mold of the tapping hole.
The nozzle array is positioned below a lower chain belt of the pig machine at the molten iron injection end.
The utility model has the following technical effects: the chain belt preheating device of the pig machine can preheat the chain belt to the temperature in normal production at the initial stage of cast iron, and eliminates quality defects caused by low temperature of the chain belt.
Drawings
FIG. 1 is a schematic diagram of a preheating device for a chain belt of an pig machine, which implements the utility model.
The reference numerals are listed below: 1-a chain belt at the upper layer of the pig machine; 2-a lower chain belt of the pig machine; 3-a chain belt of the pig machine; 4-tap hole (tap hole); 5-a temperature measuring device; 6-nozzle arrays; 7-a gas pipeline; 8-a quick connector; 9-gas flow valve; 10-a fuel gas hose; 11-a gas valve; 12-a gas tank; 13-fixing bolts; 14-fixing the bracket.
Detailed Description
The present utility model will be described below with reference to examples and the accompanying drawings (fig. 1).
FIG. 1 is a schematic diagram of a preheating device for a chain belt of an pig machine, which implements the utility model. Referring to fig. 1, the preheating device for the chain belt of the pig casting machine comprises a gas pipeline 7 positioned below a lower chain belt 2 of the pig casting machine, wherein a nozzle array 6 with an ignition device is distributed on the gas pipeline 7, a chain belt iron mold array with an inverted mold cavity is distributed on the lower chain belt 2 of the pig casting machine, and nozzle nozzles face the mold cavity of the chain belt iron mold.
The gas pipeline 7 is connected with a gas tank 12 through a gas hose 10, and the gas hose 10 is provided with a gas valve 11 and a gas flow valve 9. The air inlet end of the gas pipeline 7 is connected with the air outlet end of the gas hose 10 through a quick connector 8. The gas pipe 7 is connected with a fixing bracket 14, and the fixing bracket 14 is fixed on the frame of the pig machine through a fixing bolt 13. The molten iron injection end of the pig machine chain belt 3 is lower than the cast iron block demoulding end of the pig machine chain belt 3. A tapping hole 4 is formed above the upper chain belt 1 of the pig machine at the molten iron injection end, and a temperature measuring device 5 is arranged on the input side of a chain belt iron mould of the tapping hole 4. The nozzle array 6 is positioned below the lower chain belt 2 of the pig machine at the molten iron injection end.
The utility model discloses a preheating device for a chain belt of an pig machine, which is designed to be a heater for preheating by using fuel gas. Mainly comprises a gas pipe, a valve, a check valve, a regulating valve, a heater and a temperature measuring device. The heater is arranged below the chain belt of the pig machine, and three groups of heaters are arranged, so that the aim of controlling the preheating temperature is fulfilled by controlling the gas flow through various valves.
The chain belt is preheated before the cast iron machine is stopped for the first time, so that the chain belt reaches the temperature state during normal production, the initial surface quality is good, and the aim of eliminating defects is fulfilled.
The gas pipe 7 is welded on the fixing bracket 14 and fixed below the chain belt by fixing bolts 13, and each nozzle corresponds to one iron mold. The gas pipeline 7 is connected with a gas hose by a quick connector 8, and the other end is connected with a gas tank 12. A gas valve 5 and a gas flow valve 9 are provided on the gas hose 6.
Before production, the pig casting machine is started, a gas valve is simultaneously opened, a preheating chain belt iron mold is ignited at a heater, the gas flow is controlled by a flow valve to achieve the preheating effect, and the flow valve is connected with a central control computer to be convenient to control.
The wireless temperature measuring device is arranged in front of the tapping channel, connected with the central control computer, monitors the temperature of the iron mould, and controls the gas flow by means of the valve to enable the iron mould to reach more than 130 ℃.
And after the iron connection is started, the valve is closed, and the temperature of the chain belt can be ensured to be more than 150 ℃ by the residual temperature of the molten iron heating chain belt in the later stage.
The utility model is characterized in that:
1. the utility model uses coal gas to preheat the chain belt of the pig machine, avoids the cooling die to connect iron, and can monitor the temperature of the iron die when connecting iron.
2. After the temperature of the chain belt is raised, the mold slurry is kept dry during molten iron receiving, so that the surface defects of the cast iron block are reduced, and the quality of the cast iron block is improved.
3. The working condition of the preheated chain belt iron mold is similar to that of normal production, and the qualification rate and the quality stability of the cast iron block can be ensured.
4. The pipeline of gas nozzle is dismantled conveniently, convenient maintenance.
What is not described in detail in this specification is prior art known to those skilled in the art. It is noted that the above description is helpful for a person skilled in the art to understand the present utility model, but does not limit the scope of the present utility model. Any and all such equivalent substitutions, modifications and/or deletions as may be made without departing from the spirit and scope of the utility model.
Claims (7)
1. The preheating device for the chain belt of the pig casting machine is characterized by comprising a gas pipeline positioned below a lower chain belt of the pig casting machine, wherein nozzle arrays with ignition devices are distributed on the gas pipeline, the lower chain belt of the pig casting machine is distributed with a chain belt iron mold array with inverted mold cavities, and nozzle nozzles face the mold cavities of the chain belt iron molds.
2. The preheating device for the chain belt of the pig machine according to claim 1, wherein the gas pipeline is connected with the gas tank through a gas hose, and a gas valve and a gas flow valve are arranged on the gas hose.
3. The preheating device for the chain belt of the pig machine according to claim 2, wherein the air inlet end of the gas pipeline is connected with the air outlet end of the gas hose through a quick connector.
4. The preheating device for the chain belt of the pig machine according to claim 1, wherein the gas pipeline is connected with a fixing bracket, and the fixing bracket is fixed on a frame of the pig machine through a fixing bolt.
5. The preheating device for an pig machine chain belt according to claim 1, wherein the molten iron injection end of the pig machine chain belt is lower than the cast iron block stripping end of the pig machine chain belt.
6. The preheating device for the chain belt of the pig machine according to claim 5, wherein a tap hole is arranged above an upper layer chain belt of the pig machine at the molten iron injection end, and a temperature measuring device is arranged at the input side of a chain belt iron mold of the tap hole.
7. The apparatus according to claim 6, wherein the nozzle array is located below a lower strand of the pig machine at the molten iron injection end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223424978.XU CN219503679U (en) | 2022-12-20 | 2022-12-20 | Chain belt preheating device of pig machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223424978.XU CN219503679U (en) | 2022-12-20 | 2022-12-20 | Chain belt preheating device of pig machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219503679U true CN219503679U (en) | 2023-08-11 |
Family
ID=87529716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223424978.XU Active CN219503679U (en) | 2022-12-20 | 2022-12-20 | Chain belt preheating device of pig machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219503679U (en) |
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2022
- 2022-12-20 CN CN202223424978.XU patent/CN219503679U/en active Active
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