CN217044575U - Air pressure closed type heat preservation furnace - Google Patents
Air pressure closed type heat preservation furnace Download PDFInfo
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- CN217044575U CN217044575U CN202122806276.7U CN202122806276U CN217044575U CN 217044575 U CN217044575 U CN 217044575U CN 202122806276 U CN202122806276 U CN 202122806276U CN 217044575 U CN217044575 U CN 217044575U
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Abstract
The utility model discloses a pneumatic closed heat preservation furnace, which comprises a closed furnace body, a feeding pipe, a discharging pipe, an air inlet pipe, a nitrogen degassing device and a controller; a liquid storage inner cavity is arranged in the closed furnace body; one end of the feed pipe penetrates through the furnace wall of the closed furnace body and is inserted into the bottom of the liquid storage cavity, and the other end of the feed pipe is positioned outside the closed furnace body and is a feed port; one end of the discharge pipe penetrates through the furnace wall of the closed furnace body and is inserted into the bottom of the liquid storage inner cavity, the other end of the discharge pipe is positioned outside the closed furnace body and is a discharge hole, and the discharge hole is lower than the feed inlet; one end of the air inlet pipe is inserted into the top of the inner cavity of the liquid storage cavity from the upper part of the closed furnace body, a control valve is arranged on the air inlet pipe, and the other end of the air inlet pipe is connected with an air supply pipeline; the controller is electrically connected with the control valve; the nitrogen gas removing device is positioned in the inner cavity of the liquid storage and is electrically connected with the controller. The utility model discloses a closed heat preservation stove of atmospheric pressure, its keeps warm effectually, and temperature control is good, reduces aluminium liquid and presss from both sides the sediment.
Description
Technical Field
The utility model belongs to aluminium alloy production field, concretely relates to closed heat preservation stove of atmospheric pressure.
Background
With the rapid development of the automobile industry, new requirements on high efficiency, stability and energy consumption reduction of automobile part production are met, and molten aluminum used for casting molding is poured out from a melting furnace to a middle treatment bag, then contained in a transfer bag and subjected to spoon taking and pouring by an open type melting and heat preservation furnace, wherein the molten aluminum is manual or automatic. The temperature deviation between the upper part and the lower part of the aluminum liquid temperature control is large, and the aluminum liquid can generate oxidation with oxygen in the air when contacting with the air, and slag can be formed on the surface. Slag inclusion and air inclusion in the aluminum liquid generated in the oxidation process are product defects such as air holes or shrinkage porosity and the like generated in the process of solidification forming in the aluminum casting mold, if the slag inclusion in the aluminum liquid is serious, the fluidity and the quantification are not stable, and continuous production factors cannot be increased, so that the necessary technical measures are required for reducing the slag inclusion in the aluminum liquid of the heat preservation furnace, reducing the product defects and reducing the quantification problem in the production process.
At present, methods for controlling a spoon to take out and pour by using a manipulator are common in China, a deslagging agent is added into molten aluminum before molten aluminum pouring, the problem of slag inclusion can be solved, but after the molten aluminum is melted and transferred into a heat preservation furnace, molten aluminum oxide and temperature control are difficult problems.
Therefore, a new technology is needed to solve the problems of oxide and temperature control difficulty of molten aluminum in the holding furnace in the prior art.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides a closed holding furnace of atmospheric pressure, which has good heat preservation effect, good temperature control and reduced molten aluminum slag inclusion.
The utility model adopts the following technical scheme:
a gas pressure closed type heat preservation furnace comprises a closed furnace body, a feeding pipe, a discharging pipe, a gas inlet pipe, a nitrogen degassing device and a controller;
a liquid storage inner cavity is arranged in the closed furnace body; one end of the feed pipe penetrates through the furnace wall of the closed furnace body and is inserted into the bottom of the liquid storage cavity, and the other end of the feed pipe is positioned outside the closed furnace body and is a feed inlet; one end of the discharge pipe penetrates through the furnace wall of the closed furnace body and is inserted into the bottom of the liquid storage inner cavity, the other end of the discharge pipe is positioned outside the closed furnace body and is a discharge hole, and the discharge hole is lower than the feed inlet;
one end of the air inlet pipe is inserted into the top of the inner cavity of the liquid storage cavity from the upper part of the closed furnace body, a control valve is arranged on the air inlet pipe, and the other end of the air inlet pipe is connected with an air supply pipeline; the controller is electrically connected with the control valve;
the nitrogen degassing device is positioned in the inner cavity of the liquid storage and is electrically connected with the controller.
As a further improvement of the technical proposal of the utility model, the closed furnace body is provided with a heat preservation layer.
As a further improvement of the technical proposal of the utility model, the heat-insulating layer is an asbestos fiber layer.
As a further improvement of the technical scheme of the utility model, still including setting up atmospheric pressure sensor in the stock solution inner chamber, atmospheric pressure sensor with the controller electricity is connected.
As the utility model discloses technical scheme's further improvement, still including inserting the heater of intracavity in the stock solution with be located temperature sensor of intracavity in the stock solution, the heater temperature sensor with the controller electricity is connected.
As the utility model discloses technical scheme's further improvement, still including setting up level detector in the stock solution inner chamber and the liquid level display who is located the external closed stove, level detector, liquid level display with the controller electricity is connected.
As a further improvement of the technical proposal of the utility model, the closed furnace body is provided with a slag cleaning port and can be closed the sealing door of the slag cleaning port.
As the utility model discloses technical scheme's further improvement still includes removes the frame, closed furnace body is fixed remove on the frame, it is equipped with the walking wheel to remove the rest base portion.
As the utility model discloses technical scheme's further improvement, it still is equipped with elevating system to remove the frame, closed furnace body is fixed elevating system is last.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a closed heat preservation stove of atmospheric pressure, what adopt is closed furnace body, has only set up inlet pipe, discharging pipe and external intercommunication to the bottom of stock solution inner chamber is all inserted to the one end of inlet pipe, discharging pipe, and after adding aluminium liquid, the lower extreme of inlet pipe, discharging pipe can submergence to aluminium liquid, thereby realizes sealed in the stock solution inner chamber, avoids the heat to give off the external world, thereby realizes keeping warm; when discharging is needed, high-pressure gas is input through the gas inlet pipe, so that the aluminum liquid can be extruded out of the discharge hole, the discharge amount can be controlled by controlling the opening of the control valve through the controller, and the aluminum liquid cannot flow out of the feed hole because the discharge hole is lower than the feed hole;
2. and a nitrogen degassing device is also arranged, and nitrogen can be input into the aluminum liquid in the liquid storage inner cavity to form a large amount of dispersed bubbles, so that oxidized slag is adsorbed, and slag inclusion of the discharged aluminum liquid is avoided.
Drawings
The technology of the present invention will be further described in detail with reference to the accompanying drawings and detailed description:
FIG. 1 is a schematic view of the whole structure of the gas-pressure closed holding furnace of the present invention;
fig. 2 is a schematic structural view of the inside of the air pressure closed type heat preservation furnace of the present invention.
Reference numerals:
1-a closed furnace body; 11-inner cavity of liquid storage; 12-a slag removal port; 13-sealing the door; 2-a feeding pipe; 21-a feed inlet; 3, discharging the material pipe; 31-a discharge hole; 4, an air inlet pipe; 5-nitrogen gas removal equipment; 6-a controller; 7-a heater; 8-a liquid level display; 9-a movable rack; 91-lifting mechanism.
Detailed Description
The conception, specific structure and technical effects of the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments, so as to fully understand the objects, aspects and effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The same reference numbers will be used throughout the drawings to refer to the same or like parts.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, the description of the upper, lower, left, right, etc. used in the present invention is only relative to the mutual positional relationship of the components of the present invention in the accompanying drawings.
Referring to fig. 1 and 2, the air pressure closed type heat preservation furnace comprises a closed furnace body 1, a feeding pipe 2, a discharging pipe 3, an air inlet pipe 4, a nitrogen degassing device 5 and a controller 6.
Wherein, be equipped with stock solution inner chamber 11 in the closed furnace body 1, stock solution inner chamber 11 is closed, only can be through inlet pipe 2, discharging pipe 3 and external intercommunication to in the heat of avoiding aluminium liquid dispels the air between, in order to play the heat preservation effect.
One end of the feeding pipe 2 penetrates through the furnace wall of the closed furnace body 1 and is inserted into the bottom of the liquid storage inner cavity 11, the other end of the feeding pipe is positioned outside the closed furnace body 1 and is a feeding hole 21, and the feeding hole 21 is hopper-shaped so as to facilitate the addition of aluminum liquid. One end of the discharge pipe 3 penetrates through the furnace wall of the closed furnace body 1 and is inserted into the bottom of the liquid storage inner cavity 11, the other end of the discharge pipe is positioned outside the closed furnace body 1 and is a discharge hole 31, and the discharge hole 31 is lower than the feed port 21. Because the bottom of stock solution inner chamber 11 is all inserted to the one end of inlet pipe 2, discharging pipe 3, after adding aluminium liquid, aluminium liquid can submerge the lower extreme of inlet pipe 2, discharging pipe 3 to realize sealed in the stock solution inner chamber 11, avoid the heat to give off the external world, thereby realize keeping warm. In one embodiment, the tapping pipe 3 is made of silicon nitride. In one embodiment, the liner of the hopper-shaped feed inlet 21 is made of ceramic composite materials, the shell is made of steel, the feed inlet is provided with a baffle capable of being opened and closed, and the feed inlet can be closed when the feed is not fed.
One end of the air inlet pipe 4 is inserted into the top of the inner cavity of the liquid storage inner cavity 11 from the upper part of the closed furnace body 1, a control valve is arranged on the air inlet pipe 4, and the other end of the air inlet pipe 4 is connected with an air supply pipeline; the controller 6 is electrically connected with the control valve. When discharging is needed, high-pressure gas is input through the gas inlet pipe 4, so that the aluminum liquid can be extruded out of the discharge hole 31, the controller 6 controls the control valve to open, so that the discharge amount can be controlled, and the aluminum liquid cannot flow out of the feed hole 21 because the discharge hole 31 is lower than the feed hole 21. Wherein the control valve may be a solenoid valve. The controller 6 can adopt a PLC which is fixed outside the closed furnace body 1 through an electric box.
The air inlet pipe 4 can be connected with a nitrogen bottle for inputting high-pressure nitrogen or a high-pressure air pump for directly inputting high-pressure air. Preferably, high-pressure air is input, the cost is lower, and oxidizing slag caused by the input air can be removed by the nitrogen degassing device 5.
The nitrogen degassing device 5 is positioned in the liquid storage inner cavity 11 and is electrically connected with the controller 6, and the nitrogen degassing device 5 can input nitrogen into the aluminum liquid in the liquid storage inner cavity 11 to form a large amount of dispersion bubbles, so that oxidized slag is adsorbed, and slag inclusion of the discharged aluminum liquid is avoided.
Preferably, the closed furnace body 1 is provided with a heat preservation layer to further improve the heat preservation effect. In one embodiment, the shell of the closed furnace body 1 is made of steel, and the heat insulation layer is arranged on the outer surface of the steel shell to isolate the steel from air, so that the heat insulation effect is enhanced. In one embodiment, the insulation layer is an asbestos fiber layer. The connecting seams between the shell and other parts are sealed by high-temperature sealant, so that air leakage is avoided.
Preferably, the air pressure closed type heat preservation furnace further comprises an air pressure sensor arranged in the liquid storage cavity 11, the air pressure sensor is electrically connected with the controller 6, and the controller 6 can control the opening and closing of a control valve of the air inlet pipe 4 according to the air pressure change in the cavity so as to control the amount of discharged aluminum liquid.
Preferably, the air-pressure closed type heat preservation furnace further comprises a heater 7 inserted into the liquid storage inner cavity 11 and a temperature sensor located in the liquid storage inner cavity 11, the heater 7 and the temperature sensor are electrically connected with the controller 6, the aluminum liquid can be heated through the heater 7, the temperature of the aluminum liquid is detected through the temperature sensor, the controller 6 regulates and controls starting and stopping of the heater 7 according to the temperature detected by the temperature sensor, and therefore the temperature of the aluminum liquid is maintained within a required range.
Preferentially, the air pressure closed type heat preservation furnace further comprises a liquid level detector arranged in the liquid storage inner cavity 11 and a liquid level display 8 positioned outside the closed type furnace body 1, and the liquid level detector, the liquid level display 8 and the controller 6 are electrically connected. The liquid level detector can detect the liquid level of aluminium liquid, can help controlling the discharge of aluminium liquid and the action of adding aluminium liquid, avoids the liquid level too high to lead to overflowing or the liquid level crosses lowly to lead to no longer sealing. The liquid level display 8 displays the liquid level to help the personnel know the liquid level condition.
Wherein, the closed furnace body 1 is provided with a slag removing opening 12 and a sealing door 13 capable of sealing the slag removing opening 12, the sealing door 13 is sealed at ordinary times to ensure internal sealing, and the sealing door 13 is opened to remove the internal slag when the slag is required to be removed.
Preferably, the air pressure closed type heat preservation furnace further comprises a movable frame 9, the closed type furnace body 1 is fixed on the movable frame 9, and walking wheels are arranged at the bottom of the movable frame 9. Can shift the closed holding furnace of atmospheric pressure through removing frame 9, it is more convenient that the complete machine is adjusted. Furthermore, the movable frame 9 is further provided with a lifting mechanism 91, the closed furnace body 1 is fixed on the lifting mechanism 91, the upper position and the lower position can be adjusted by the lifting mechanism 91 to different product heights, and the application range is wide. In one embodiment, the lift mechanism 91 is a scissor lift mechanism 91.
Based on the structure, the use process of the air pressure closed type heat preservation furnace is briefly described as follows:
1. firstly, quantitatively supplying air into a furnace filled with aluminum liquid to ensure that the internal pressure of the furnace rises, and simultaneously keeping the aluminum liquid 5cm away from a liquid outlet along with the rising to wait for die casting production;
2. after the aluminum liquid quantity die casting machine required for quantitative production is automatically closed in place, the controller 6 controls the electromagnetic valve to feed air into the hearth again, aluminum liquid flows out of the discharging groove, and the liquid discharging quantity is controlled by the opening of the control valve.
Other contents of the air pressure closed type heat preservation furnace of the utility model are referred to the prior art and are not repeated herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.
Claims (9)
1. The air pressure closed type heat preservation furnace is characterized by comprising a closed furnace body, a feeding pipe, a discharging pipe, an air inlet pipe, a nitrogen degassing device and a controller;
a liquid storage inner cavity is arranged in the closed furnace body; one end of the feed pipe penetrates through the furnace wall of the closed furnace body and is inserted into the bottom of the liquid storage cavity, and the other end of the feed pipe is positioned outside the closed furnace body and is a feed port; one end of the discharge pipe penetrates through the furnace wall of the closed furnace body and is inserted into the bottom of the liquid storage inner cavity, the other end of the discharge pipe is positioned outside the closed furnace body and is a discharge hole, and the discharge hole is lower than the feed inlet; the feed inlet is hopper-shaped and is provided with an inner container and a shell;
one end of the air inlet pipe is inserted into the top of the inner cavity of the liquid storage cavity from the upper part of the closed furnace body, a control valve is arranged on the air inlet pipe, the other end of the air inlet pipe is connected with an air supply pipeline, and the air supply pipeline is connected with a nitrogen bottle to input high-pressure nitrogen; the controller is electrically connected with the control valve;
the nitrogen degassing device is positioned in the liquid storage inner cavity and electrically connected with the controller, is inserted below the liquid level of the aluminum liquid and inputs nitrogen into the aluminum liquid to form a large amount of dispersed bubbles.
2. The gas-pressure closed type heat preserving furnace of claim 1, characterized in that: the closed furnace body is provided with a heat insulation layer.
3. The gas-pressure closed type heat preserving furnace of claim 2, characterized in that: the heat-insulating layer is an asbestos fiber layer.
4. The atmospheric-pressure closed holding furnace according to claim 1, characterized in that: the air pressure sensor is arranged in the liquid storage cavity and electrically connected with the controller.
5. The atmospheric-pressure closed holding furnace according to claim 1, characterized in that: the liquid storage device is characterized by further comprising a heater inserted into the liquid storage cavity and a temperature sensor located in the liquid storage cavity, wherein the heater and the temperature sensor are electrically connected with the controller.
6. The atmospheric-pressure closed holding furnace according to claim 1, characterized in that: the liquid level detector is arranged in the liquid storage cavity, and the liquid level display is positioned outside the closed furnace body, and the liquid level detector and the liquid level display are electrically connected with the controller.
7. The gas-pressure closed type heat preserving furnace of claim 1, characterized in that: the closed furnace body is provided with a slag cleaning port and a sealing door capable of sealing the slag cleaning port.
8. The atmospheric-pressure closed holding furnace according to any one of claims 1 to 7, characterized in that: still including removing the frame, closed furnace body is fixed remove the frame is last, it is equipped with the walking wheel to remove the frame bottom.
9. The atmospheric-pressure closed holding furnace of claim 8, characterized in that: the movable frame is further provided with a lifting mechanism, and the closed furnace body is fixed on the lifting mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122806276.7U CN217044575U (en) | 2021-11-16 | 2021-11-16 | Air pressure closed type heat preservation furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122806276.7U CN217044575U (en) | 2021-11-16 | 2021-11-16 | Air pressure closed type heat preservation furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217044575U true CN217044575U (en) | 2022-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122806276.7U Active CN217044575U (en) | 2021-11-16 | 2021-11-16 | Air pressure closed type heat preservation furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217044575U (en) |
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2021
- 2021-11-16 CN CN202122806276.7U patent/CN217044575U/en active Active
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