CN211218668U - Heatable pouring device - Google Patents

Abstract

The utility model discloses a heatable pouring device, which comprises a stopper rod and a lower pouring pipe, wherein the bottom of the stopper rod is a joint, the inside of the stopper rod is provided with an accommodating cavity, and a heating device is embedded in the accommodating cavity; a raised ring is arranged on the joint and is annularly arranged along the outer wall of the stopper rod; the lower pouring pipe is a hollow cylinder, a lower pouring gate is arranged at the bottom end of the lower pouring pipe, the lower pouring gate can be inserted into the connector of the stopper rod in a matching mode, and the interior of the lower pouring pipe is matched with the protruding ring. The utility model discloses a set up protruding ring at the stopper rod outer wall, set up heating device in the stopper rod, the effectual jam problem that exists of having solved in the casting process.

Description

Heatable pouring device

Technical Field

The utility model belongs to the technical field of the pouring device technique and specifically relates to a heatable pouring device.

Background

In the casting process of the wrought aluminum alloy, a pouring device is generally formed by a refractory stopper rod and a lower pouring pipe for casting, the traditional pouring device generally adopts a refractory material to manufacture the refractory stopper rod, the opening and closing degree of the stopper rod and the lower pouring pipe is controlled, the flow of a melt in the casting process is controlled, and as the stopper rod main structure is made of the refractory material, the stopper rod and the lower pouring pipe are easy to break in the production process and do not have a heating function, so that the stopper rod and the lower pouring pipe are required to be respectively preheated in advance when in use, and then pouring is carried out, and meanwhile, the stopper rod can not obtain continuous heat supply in the casting process, so that the lower pouring pipe is easily blocked by the solidified metal melt when the temperature is reduced, and casting failure is caused.

Patent CN206372897U "a wear-resistant pin" discloses a flow control device composed of a metal pin and a silicon nitride rod sleeve, which solves the problems of easy breakage and non-wear resistance of the pin or the stopper, but the metal pin or the stopper still has the phenomenon of easy metal liquid blockage, and can not be heated, and the problem of blockage in the casting process can not be solved fundamentally.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a heatable pouring device sets up heating device through setting up protruding ring at the stopper stick outer wall in the stopper stick, the effectual jam problem of having solved the existence in the casting process.

In order to achieve the above purpose, the technical scheme of the utility model is that:

a heatable pouring device comprises a stopper rod and a lower pouring pipe, wherein the bottom of the stopper rod is provided with a joint, an accommodating cavity is formed in the stopper rod, and a heating device is embedded in the accommodating cavity; a raised ring is arranged on the joint and is annularly arranged along the outer wall of the stopper rod;

the lower pouring pipe is a hollow cylinder, a lower pouring gate is arranged at the bottom end of the lower pouring pipe, the lower pouring gate can be inserted into the connector of the stopper rod in a matching mode, and the interior of the lower pouring pipe is matched with the protruding ring.

Preferably, the joint of the stopper rod is in a truncated cone shape with a small lower part and a large upper part.

Preferably, the top of the stopper rod is provided with a fixing hole. More preferably, the fixing hole can be matched and connected with the lifting system.

Preferably, the stopper rod is made of silicon nitride materials, and the outer surface of the stopper rod is coated with boron nitride coatings.

Preferably, the lower pouring pipe is made of silicon nitride materials, and the inner surface of the lower pouring pipe is coated with boron nitride coatings.

Preferably, the height of the raised ring is 5-15 mm.

Preferably, the heating device is an electric heating iron rod.

Preferably, the bottom end of the heating device is 10-25mm away from the bottom end of the stopper rod.

When the heatable pouring device is used, the joint part of the stopper rod is arranged in the lower pouring pipe, the convex ring is positioned above the lower pouring pipe, the joint part is adjusted up and down to change the distance between the joint part and the inner wall of the lower pouring pipe, so that the flow rate and the pouring speed of the metal melt are adjusted, and when the metal melt is required to be added in a pause mode, the convex ring is rapidly inserted into the lower pouring pipe, so that the metal melt can be blocked from entering.

The utility model has the advantages of it is following:

(1) the utility model is embedded with a heating device, which can automatically heat the stopper and continuously heat the whole pouring device in the pouring process, thus avoiding the work of preheating the stopper and the lower pouring gate before pouring and reducing the risk of damage in the processes of baking and transferring the stopper; and continuous heating can effectively avoid the condition that the lower pouring gate is blocked due to the fact that the fluidity of the metal melt is deteriorated due to temperature reduction in the pouring process, and can also effectively avoid the condition that the lower pouring gate is blocked when the slag content of the metal melt is high.

(2) The lower part of the joint of the stopper rod of the utility model is provided with the convex ring which is matched with the interior of the lower pouring pipe, when in use, the convex ring is positioned above the lower pouring pipe, the stopper rod can not be blocked due to the solidification of the metal melt, and simultaneously, the condition of blocking the lower pouring gate when the content of the metal melt slag is high can be better avoided; when the stopper rod blocks the metal melt, the upper part of the stopper rod does not need to contact the lower pouring pipe, and the stopper rod fixed by a smaller contact area can effectively reduce the friction area between the stopper rod and the lower pouring pipe in the pouring process, so that the service life of the pouring device is prolonged.

(3) The utility model discloses well stopper stick's joint has used trapezoidal design, combines setting up of protruding ring can more accurate control pouring in-process metal melt's flow and pouring speed to improve the quality of pouring product.

(4) The utility model adopts silicon nitride as a stopper rod and a lower pouring pipe, and the surface of the stopper rod is coated with boron nitride coating. The silicon nitride has the characteristics of high temperature resistance and good forming performance, the working temperature of the prepared pouring device can reach 1400 ℃, the boron nitride coating has the characteristics of high temperature resistance and workpiece wear resistance improvement, and the combination of the silicon nitride and the boron nitride coating enables the pouring device to keep the original performance under the conditions of long-time friction and high temperature, so that the service life of the pouring device is effectively prolonged.

(5) The utility model discloses further select the electric heat iron rod as heating device, embedded electric heat iron rod can provide good support for whole stopper stick, avoids the brittleness of silicon nitride to cause the stopper stick to use, remove the cracked condition of in-process.

Drawings

Fig. 1 is a schematic sectional structure view of a stopper rod.

Fig. 2 is a schematic top view of the stopper rod.

Fig. 3 is a schematic perspective view of the lower gate.

Fig. 4 is a schematic structural view of a stopper and a lower gate in use.

In the figure, a stopper rod 1, a lower pouring pipe 2, a joint 3, a convex ring 4, a fixing hole 5, a heating device 6 and a lower pouring gate 7.

Detailed Description

The present invention will be further described with reference to the following specific examples, but the scope of the present invention is not limited to the following examples.

Example 1

A heatable pouring device comprising a stopper rod 1 and a down tube 2, wherein: as shown in fig. 1 and 2, the bottom of the stopper rod 1 is a joint 3, an accommodating chamber is arranged in the stopper rod, a heating device is embedded in the accommodating chamber, and the accommodating chamber is generally formed by downwards slotting from the top end of the stopper rod 1; a raised ring 4 is arranged on the joint, the raised ring 4 is annularly arranged along the outer wall of the stopper rod 1, the raised ring 4 can be welded on the outer wall of the stopper rod 1, or can be integrally formed with the stopper rod 1, so that the outer diameter of the part on which the raised ring 4 is arranged is larger than that of the part on which the stopper rod 1 is arranged; as shown in fig. 3, the down-flow pipe 2 is a hollow cylinder, the bottom end is provided with a down-flow gate 7, the down-flow gate 7 can be inserted into the joint of the stopper 1 in a matching manner, that is, the size of the hollow part of the down-flow gate 7 is matched with the outer diameter of the joint of the stopper 1, so that the joint 3 of the stopper 1 can be completely inserted into the down-flow gate 7, and the bottom end can completely block the outlet of the down-flow gate 7; the inner part of the lower casting pipe 2 is matched with the convex ring 4, namely the outer diameter of the convex ring 4 is matched with the inner diameter of the lower casting pipe 2, the lower casting pipe 2 and the lower pouring gate 7 are generally integrally formed, and the lower casting pipe 2 and the lower pouring gate 7 can be connected together in a welding mode and the like. When the lower pouring gate 7 needs to be blocked by the aid of the protruding ring 4, only the protruding ring 4 is partially attached to the inner wall of the lower pouring pipe 2, the upper portion of the stopper rod 1 does not need to contact the lower pouring pipe 2, the smaller contact area is used for blocking the lower pouring pipe 2, the friction area between the stopper rod 1 and the lower pouring pipe 2 in the pouring process can be effectively reduced, and the service life of the pouring device is prolonged.

Preferably, the joint 3 of the stopper 1 is in the shape of a truncated cone with a small lower part and a large upper part. The joint structure can more accurately control the flow and the pouring speed of the metal melt in the pouring process and timely block the metal melt by matching with the convex ring 4 when necessary.

Preferably, in order to conveniently move the stopper rod 1 to adjust the flow and the pouring speed of the metal melt, the top of the stopper rod 1 is provided with a fixing hole 5, a hoisting piece can be inserted into the fixing hole 5, and the stopper rod 1 can be conveniently moved up and down through the hoisting piece, so that the flow and the pouring speed of the metal melt can be adjusted. More preferably, the fixed hole can be connected with the lifting system in a matching mode, namely, the automatic control of the movement of the stopper rod 1 can be realized through the lifting system, and the automation of the pouring process is improved.

Preferably, the stopper rod 1 is made of silicon nitride material, and the outer surface is coated with boron nitride paint. The silicon nitride has the characteristics of high temperature resistance and good forming performance, the working temperature of the prepared pouring device can reach 1400 ℃, the boron nitride coating has the characteristics of high temperature resistance and workpiece wear resistance improvement, and the combination of the silicon nitride and the boron nitride coating enables the pouring device to keep the original performance under the conditions of long-time friction and high temperature, so that the service life of the pouring device is effectively prolonged. Similarly, the down-cast pipe 2 is also made of silicon nitride material, and the inner surface of the down-cast pipe is coated with boron nitride coating.

Preferably, the height of the raised ring 4, here referred to as the height in the vertical direction of the stopper rod 1, is 5mm, which is more advantageous for the purpose of plugging the down pipe 2.

Preferably, heating device 6 chooses for use the electric heating iron stick, and embedded electric heating iron stick can provide good support for whole stopper stick, avoids the brittle of silicon nitride to cause the stopper stick condition of fracture in use, removal process.

Preferably, the bottom end of the heating device 6 is 10mm away from the bottom end of the stopper rod 1, the distance can better keep the stopper rod 1 not to be easily broken, and a better heating effect can be achieved.

When the stopper rod is used, as shown in figure 4, the joint 3 of the stopper rod 1 is partially arranged in the lower pouring pipe 2, the convex ring 4 is positioned above the lower pouring pipe 2, the joint 3 is adjusted up and down, the distance between the joint and the inner wall of the lower pouring pipe 2 is changed, so that the flow rate and the pouring speed of the metal melt are adjusted, and when the metal melt is required to be added in a suspension mode, the convex ring 4 is rapidly inserted into the lower pouring pipe, and the metal melt can be blocked.

The pouring device of the embodiment continuously pours 387 times, and totally 7439 tons of aluminum liquid are poured without the situations of pipe blockage and stopper rod fracture.

Example 2

This embodiment is substantially the same as embodiment 1 except that the height of the raised ring 4 is 15mm and the distance of the heating means 6 from the bottom end of the stopper rod 1 is 25 mm.

The pouring device of the embodiment continuously pours 372 times, and total 6312 tons of molten aluminum are poured without the conditions of pipe blockage and stopper rod fracture.

Example 3

This embodiment is substantially the same as embodiment 1 except that the height of the raised ring 4 is 8mm and the distance of the heating means 6 from the bottom end of the stopper rod 1 is 17 mm.

The pouring device of the embodiment continuously pours 412 times, and the total pouring amount is 8100 tons of aluminum liquid without the conditions of blocking of a pouring pipe and breakage of a stopper rod.

The embodiments described above are some, but not all embodiments of the present invention. The detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

Claims (9)

1. The utility model provides a heatable pouring device, includes stopper rod and lower pouring tube, its characterized in that:

the bottom of the stopper rod (1) is provided with a joint (3), an accommodating chamber is arranged in the stopper rod (1), and a heating device (6) is embedded in the accommodating chamber; a raised ring (4) is arranged on the joint (3), and the raised ring (4) is annularly arranged along the outer wall of the stopper rod (1);

the lower pouring pipe (2) is a hollow cylinder, a lower pouring gate (7) is arranged at the bottom end of the lower pouring pipe, the lower pouring gate (7) can be inserted into the connector (3) of the stopper rod (1) in a matched mode, and the inner portion of the lower pouring pipe (2) is matched with the protruding ring (4).

2. Heatable casting device according to claim 1, characterized in that:

the joint (3) of the stopper rod (1) is in a circular truncated cone shape with a small lower part and a big upper part.

3. Heatable casting device according to claim 1, characterized in that:

the top of the stopper rod (1) is provided with a fixing hole (5).

4. Heatable casting device according to claim 1, characterized in that:

the stopper rod (1) is made of silicon nitride materials, and the outer surface of the stopper rod is coated with boron nitride coatings.

5. Heatable casting device according to claim 1, characterized in that:

the lower pouring pipe (2) is made of silicon nitride materials, and the inner surface of the lower pouring pipe is coated with boron nitride coatings.

6. Heatable casting device according to claim 1, characterized in that:

the height of the convex ring (4) is 5-15 mm.

7. Heatable casting device according to claim 3, characterized in that:

the fixing hole (5) can be connected with the lifting system in a matching mode.

8. Heatable casting device according to any one of claims 1 to 6, characterized in that:

the heating device (6) is an electric heating iron rod.

9. Heatable casting device according to claim 1, characterized in that:

the bottom end of the heating device (6) is 10-25mm away from the bottom end of the stopper rod (1).

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