CN211218657U - High-frequency induction heating type casting machine liquid lifting pipe and casting machine - Google Patents

Abstract

The utility model discloses a high frequency induction heating formula casting machine stalk and casting machine, high frequency induction heating formula casting machine stalk includes metal pipe body and induction coil, the mouth of pipe department on metal pipe body top is equipped with the annular groove, the metal pipe body is heating pipe in the inboard formation of annular groove, induction coil locates in the annular groove and the cover is established on the heating pipe including, be equipped with induction coil in this high frequency induction heating formula casting machine stalk's the annular groove, induction coil carries out induction heating to the internal heating pipe, thereby make the mouth of pipe temperature of stalk increase, reach and predetermine the temperature and stabilize in certain temperature range, be convenient for cast, induction heating's is fast, the even temperature of heating is stable, and induction heating can not influenced by outside temperature, can avoid the metal liquid to freeze the mouth of pipe department of solidifying at the stalk, guarantee the unobstructed of stalk.

Description

High-frequency induction heating type casting machine liquid lifting pipe and casting machine

Technical Field

The utility model is used for casting production facility field especially relates to a high frequency induction heating formula casting machine stalk and casting machine.

Background

At present, a liquid-lifting pipe of a casting machine is made of heat-resistant cast iron material, and when the liquid-lifting pipe is used, molten metal in a furnace can be used for pouring when an opening part of a channel of a die, which is butted with the die, needs to be heated to the temperature of 700-800 ℃ and the temperature is kept in the interval.

The heating method of the casting machine at present is liquefied gas heating or coal gas heating, the heating principle is that after the liquefied gas is mixed with air, the mixed gas is ignited by pressure to form a jet flame which is sprayed to the opening of the riser tube to realize the heating of the opening, the temperature is kept in the range of 700-:

1. the heating is influenced by air pressure, flame of the flame thrower is unstable when the air pressure is unstable, the heating temperature is not enough, and the temperature of the opening part of the liquid lifting pipe is too low, so that the molten metal is solidified and frozen, the area in the opening part of the liquid lifting pipe is reduced, and the pouring is influenced;

2. the heating is influenced by the change of the ambient temperature environment, and the change of the ambient temperature influences the gasification speed of the liquefied gas, so that the temperature of a flaming fire head is unstable, and the heating temperature is influenced;

3. the liquefied gas pipeline is easy to leak gas, and the potential safety hazard is high;

4. the combustion of liquefied gas can form carbon dioxide emission;

5. when in use, the pipeline of the flame nozzle is easy to narrow or even block, thereby influencing flame heating;

6. the heating speed is slow, and the initial heating needs 15 minutes to heat to 700-.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a high frequency induction heating formula casting machine stalk and casting machine, wherein, high frequency induction heating formula casting machine stalk heating is even, and the temperature is stable, and the heating starts soon, and heating temperature is controlled easily, can avoid the stalk to freeze by the metal liquid solidification.

The utility model provides a technical scheme that its technical problem adopted is:

a high-frequency induction heating type casting machine lift tube comprises a metal tube body and an induction coil, wherein an annular groove is formed in a tube opening at the top end of the metal tube body, an inner heating tube is formed on the inner side of the annular groove of the metal tube body, and the induction coil is arranged in the annular groove and sleeved on the inner heating tube.

Preferably, the annular groove is filled with a heat insulation material.

Preferably, a sealing ring for sealing the annular groove is arranged on the metal pipe body.

Preferably, the metal pipe body is provided with a plurality of fixing parts capable of fixing the sealing ring.

Preferably, a plurality of the fixing pieces are distributed on the periphery of the annular groove along the circumferential direction.

Preferably, the fixing piece is a countersunk head screw which is screwed in from the outside of the metal pipe body along the radial direction and supports against the sealing ring.

Preferably, the metal pipe body is provided with a wire hole, and the induction coil is provided with a wire led out from the wire hole.

Preferably, the wire is a hollow wire with water cooling.

The utility model also provides a casting machine, including high-frequency heating host computer, heating furnace, mould and above arbitrary item high-frequency induction heating formula casting machine stalk, the high-frequency heating host computer with induction coil connects, the bottom of metal pipe body stretches into in the heating furnace.

One of the above technical solutions has at least one of the following advantages or beneficial effects:

be equipped with induction coil in this high frequency induction heating formula casting machine stalk's the annular groove, induction coil carries out induction heating to the internal heating pipe to make the mouth of pipe temperature of stalk increase, reach and predetermine the temperature and stabilize in certain temperature range, the casting of being convenient for, induction heating's is fast, the even temperature stability of heating, and induction heating can not receive outside temperature to influence, can avoid the metal liquid to freeze the mouth of pipe department of solidifying at the stalk, guarantees the unobstructed of stalk.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

FIG. 1 is a cross-sectional view of one embodiment of a high frequency induction heated caster riser tube of the present invention;

FIG. 2 is a top view of the embodiment shown in FIG. 1;

fig. 3 is a schematic structural view of an embodiment of the casting machine of the present invention.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the present invention, if there is a description of directions (up, down, left, right, front and back), it is only for convenience of description of the technical solution of the present invention, and it is not intended to indicate or imply that the technical features indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the utility model, the meaning of a plurality of is one or more, the meaning of a plurality of is more than two, and the meaning of more than two is understood as not including the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is any description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the present invention, unless otherwise explicitly defined, the terms "set", "install", "connect", and the like are to be understood in a broad sense, and for example, may be directly connected or may be indirectly connected through an intermediate medium; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The technical skill in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solution.

The embodiment of the utility model provides a high-frequency induction heating type casting machine lift tube, which can keep the mouth of the lift tube to reach a continuous and stable temperature, as shown in figure 1, the high-frequency induction heating type casting machine lift tube comprises a metal tube body 1 and an induction coil 2, an annular groove 3 is arranged at the mouth of the top end of the metal tube body 1, an inner heating tube 4 is formed inside the annular groove 3 of the metal tube body 1, the induction coil 2 is arranged in the annular groove 3 and sleeved on the inner heating tube 4, when in use, high-frequency alternating current is introduced into the induction coil 2, an alternating magnetic field formed by the induction coil 2 can enable the inner heating tube 4 to generate induced current to heat up, thereby enabling the inner heating tube 4 to reach a preset temperature and be stabilized in a certain temperature range, the purpose of heating the mouth of the lift tube is achieved, the induction heating can not be influenced by the external temperature, the heating efficiency is high, and the high-temperature inner heating pipe 4 can effectively prevent the molten metal in the liquid lifting pipe from being cooled and frozen during casting.

Referring to fig. 1, the annular groove 3 is filled with a heat insulating material, and the heat insulating material can keep the temperature of the inner heating pipe 4 stable and uniform, so that heat is not easy to dissipate, and the purpose of saving energy is achieved. Meanwhile, the heat insulation material can fix the induction coil 2 in the annular groove 3, so that the induction coil 2 is prevented from shifting in the induction heating process, and preferably, the heat insulation material is an insulating heat insulation material, such as aluminum silicate fiber, asbestos fiber and the like.

Referring to fig. 1, be equipped with sealing ring 5 of sealed annular groove 3 on the metal pipe body 1, sealing ring 5 can tightly fix insulation material and induction coil 2 in annular groove 3, prevent that insulation material and induction coil 2 from shifting among the induction heating process, sealing ring 5 is the annular, can not plug up the passageway in the metal pipe body 1, in the casting process, sealing ring 5 can avoid the liquid of casting to flow in annular groove 3 after spilling over from the mouth of pipe department of metal pipe body 1, and simultaneously, sealing ring 5 also can avoid entering annular groove 3 such as dust, avoid producing the influence to induction heating.

In some embodiments, referring to fig. 2, the metal pipe body 1 is provided with a plurality of fixing members 6 capable of fixing the sealing ring 5, and the fixing members 6 can prevent the sealing ring 5 from loosening so as to tightly seal the annular groove 3, preferably, three fixing members 6 are provided, and it is understood that the fixing members 6 can be provided in plurality.

In some embodiments, referring to fig. 2, a plurality of fixing elements 6 are circumferentially distributed around the annular groove 3, preventing the seal ring 5 from loosening.

In some embodiments, referring to fig. 1 and 2, the fixing member 6 is a countersunk screw which is screwed in the radial direction from the outside of the metal pipe body 1 and presses the sealing ring 5, so that the sealing ring 5 is firmly fixed in the annular groove 3.

Referring to fig. 2, a wire hole 7 is formed in the metal pipe body 1, the induction coil 2 is provided with a wire 8 led out from the wire hole 7, the wire 8 can be connected with a high-frequency heating host machine 9, the high-frequency heating host machine 9 inputs high-frequency alternating current to the induction coil 2 through the wire 8, so that the internal heating pipe 4 is inductively heated, the pipe orifice of the riser pipe can be poured after reaching a set temperature, and the induction heating speed is high and the temperature is stable.

In some embodiments, referring to fig. 2, the wire 8 is a hollow wire with water cooling to avoid excessive temperature of the wire 8.

The using method of the high-frequency induction heating type casting machine lift tube comprises the steps that alternating current is input into the induction coil 2 through the lead 8, the alternating magnetic field formed by the induction coil 2 enables the heating tube 4 in the ring to generate induced current to be heated, so that the tube opening of the lift tube is rapidly heated to reach the preset temperature and is stabilized within a certain temperature range, pouring is facilitated, energization of the induction coil 2 is stopped after the pouring is completed, and induction heating is finished.

The embodiment of the utility model also provides a casting machine, refer to fig. 3, including high-frequency heating host 9, heating furnace 10, mould 11 and the high-frequency induction heating casting machine lift tube described in any of the above embodiments, high-frequency heating host 9 is connected with induction coil 2, the bottom end of metal pipe 1 is stretched into heating furnace 10, heating furnace 10 is filled with metal liquid 12, when casting is needed, mould 11 is connected with the mouth of pipe at the top end of metal pipe 1, then, the working time and input current parameters of high-frequency heating host 9 are adjusted as required, high-frequency heating host 9 is started to make the inner mouth part of annular groove 3 rapidly rise to the set temperature and stabilize in a certain temperature range, metal liquid 12 is cast into grinding tool 10 through metal pipe 1 under the action of pressure air, casting of the casting is completed, after the set time is reached, high-frequency heating host 9 stops working, at this time, the molten metal in the mold 11 is solidified in the grinding tool, the induction coil 2 stops heating, the molten metal in the metal pipe body 1 falls back to the heating furnace 10, and casting is completed.

Referring to fig. 3, one or more heating elements 13 are disposed at the bottom of the heating furnace 10, the heating elements 13 can heat the molten metal 12 in the heating furnace 10, and the molten metal with a lower temperature is disposed at the bottom of the heating furnace 10, so that the heating furnace 12 disposed at the bottom of the heating furnace 10 can heat the molten metal 12 more completely, thereby keeping the molten metal in the heating furnace 10 within a certain temperature range, and facilitating casting.

The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims (9)

1. A high-frequency induction heating type casting machine liquid lifting pipe is characterized in that: the metal tube comprises a metal tube body and an induction coil, wherein an annular groove is formed in the tube opening at the top end of the metal tube body, an inner heating tube is formed on the inner side of the annular groove of the metal tube body, and the induction coil is arranged in the annular groove and sleeved on the inner heating tube.

2. The high-frequency induction heating type casting machine riser tube according to claim 1, wherein: and the annular groove is filled with heat insulation materials.

3. The high-frequency induction heating type casting machine riser tube according to claim 1, wherein: and the metal pipe body is provided with a sealing ring for sealing the annular groove.

4. A high-frequency induction heating type caster riser tube as set forth in claim 3, wherein: the metal pipe body is provided with a plurality of fixing parts capable of fixing the sealing ring.

5. The high-frequency induction heating type casting machine riser tube according to claim 4, wherein: the plurality of fixing pieces are distributed on the periphery of the annular groove along the circumferential direction.

6. The high-frequency induction heating type casting machine riser tube according to claim 5, wherein: the fixing piece is a countersunk screw which is screwed in from the outside of the metal pipe body along the radial direction and tightly props the sealing ring.

7. The high-frequency induction heating type casting machine riser tube according to claim 1, wherein: the metal pipe body is provided with a wire hole, and the induction coil is provided with a wire led out from the wire hole.

8. The high-frequency induction heating type casting machine riser tube according to claim 7, wherein: the wire is a hollow wire with water cooling.

9. A casting machine characterized by: the high-frequency induction heating type casting machine riser tube comprises a high-frequency heating host machine, a heating furnace, a die and the high-frequency induction heating type casting machine riser tube as claimed in any one of claims 1 to 8, wherein the high-frequency heating host machine is connected with the induction coil, and the bottom end of the metal tube body extends into the heating furnace.

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