Argon protection device for aluminum alloy casting

Abstract

The utility model discloses an aluminum alloy casting argon protection device which comprises a protection cover installed on the outer side of a straight pipe casting channel of a casting hopper, the inner side of the protection cover is provided with a limiting cavity and a protection cavity which are used for guiding flow of the straight pipe casting channel, and the limiting cavity is connected to the discharging top end of the straight pipe casting channel in a sleeved mode. A gas inlet pipe is arranged at the bottom end of one side of the protective cover, a gas guide pipe is arranged at the top end of the other side of the protective cover, the gas inlet pipe is connected with a gas outlet of the argon outlet device, and the tail end of the gas guide pipe is connected with a liquid inlet pipe; during use, the liquid inlet pipe extends into the gas cylinder, a solution is arranged in the gas cylinder, and the outlet pipe is arranged at the top of the gas cylinder. The gas inlet pipe and the gas guide pipe are arranged on the protective cover, and the protective cover is communicated with the argon outlet device through the gas inlet pipe, so that inert gas argon is discharged into the protective cover, air in the protective cover is discharged, and the problem that molten metal is oxidized by the air after the inert gas argon is discharged is solved; and the gas return pipe is arranged, so that redundant argon can be conveniently recycled, and resource waste is reduced.

Description

Technical Field

[0001] The utility model relates to the field of kitchen and bathroom water supply regulating equipment, in particular to an aluminum alloy casting argon protection device. Background Art

[0002] Lost foam casting is mainly used to make full-scale molds for parts. In the process of lost foam casting, the casting process is extremely important. In the process of lost foam casting, the corresponding molten metal needs to be used for casting. Since no special protection measures are taken during the casting process, the molten metal often comes into contact with oxygen in the air, causing the molten metal to be oxidized, thereby affecting the quality of the cast product. Especially in the process of aluminum alloy lost foam casting, the aluminum liquid used is easily oxidized. If no anti-oxidation protection is taken during the casting process, the quality of the finished product after casting will be affected. Utility Model Content

[0003] (I) Purpose of the utility model

[0004] In view of this, the purpose of the utility model is to provide an argon protection device for aluminum alloy casting, so as to reduce the contact between molten metal and air and prevent the molten metal from being oxidized during the lost foam casting process.

[0005] (II) Technical solution

[0006] In order to achieve the above technical purpose, the utility model provides an argon protection device for aluminum alloy casting, comprising a protection cover installed on the outside of a straight tube casting channel of a casting bucket, the inner side of the protection cover is provided with a limiting cavity and a protection cavity for guiding the straight tube casting channel, the limiting cavity is sleeved on the discharge top of the straight tube casting channel, the inner side edge of the protection cover is provided with a protective gasket and a fitting gasket, the protective gasket is arranged in the limiting cavity, the fitting gasket is arranged in the protective cavity, and the fitting gasket is an arc-shaped structure arched upward;

[0007] An air inlet pipe is provided at the bottom end of one side of the protective cover, and an air guide pipe is provided at the top end of the other side. The air inlet pipe is connected to the air outlet of the argon gas outlet device, and the end of the air guide pipe is connected to a liquid inlet pipe. When in use, the liquid inlet pipe extends into the gas cylinder, and a solution is provided in the gas cylinder. An outlet pipe is provided at the top of the gas cylinder.

[0008] Preferably, both the air inlet pipe and the air guide pipe are provided with a one-way shut-off valve.

[0009] Preferably, the bottom of the protective cover is open.

[0010] Preferably, the fitting gasket and the protective gasket are both arranged in irregular arc shapes and fit tightly to the inner wall of the protective cover.

[0011] Preferably, the outlet pipe includes an outlet pipe and a return pipe, the outlet pipe is connected to the atmosphere, and the return pipe is connected to the air inlet of the argon outlet device, so that the argon gas can be reused.

[0012] Preferably, the air guide pipe and the air return pipe are both telescopic hoses.

[0013] Compared with the existing technology, the beneficial effects of the utility model are as follows: the utility model provides a protective cover on the outer side of the straight tube casting channel, and arranges an air inlet pipe and an air guide pipe on the protective cover, which is connected to the argon gas outlet device through the air inlet pipe, so that argon, an inert gas, is discharged into the protective cover, thereby discharging the air inside the protective cover. After the discharge, there will be no problem of air oxidation of the molten metal, and since it is impossible to directly predict by the naked eye whether the air is exhausted, an external gas cylinder is arranged to be connected to it to make the effect of exhausting the air visible; and a return air pipe is arranged to facilitate the recovery and reuse of excess argon gas, thereby reducing resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 for Figure 1 An enlarged schematic diagram of the connection between the middle protective cover and the gas cylinder;

[0017] Figure 3 It is a structural schematic diagram of the sleeve connection part of the protective cover;

[0018] Figure 4 is a schematic diagram of the internal structure of the protective cover;

[0019] Figure 5 Schematic diagram of the external structure of the protective cover.

[0020] Description of the drawings: casting hopper (1), straight tube casting channel (2), protective cover (3), protective cavity (31), fitting gasket (32), limiting cavity (33), protective gasket (34), air inlet pipe (35), air guide pipe (36), liquid inlet pipe (37), gas cylinder (4), air outlet pipe (41), air return pipe (42), argon gas outlet device (5). DETAILED DESCRIPTION

[0021] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, and use. It should be understood that in all of these figures, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically represent the concepts and principles of the embodiments of the present disclosure, and do not necessarily show the specific dimensions and proportions of the various embodiments of the present disclosure. Specific parts in specific drawings may be exaggerated to illustrate the relevant details or structures of the embodiments of the present disclosure.

[0022] See Figure 1-5 As shown, the utility model provides an argon protection device for aluminum alloy casting, which specifically includes a protection cover 3 installed on the outside of the straight tube casting channel 2 of the casting bucket 1. The function of the protection cover 3 is to provide an air-removing environment for the straight tube casting channel 2. Therefore, the protection cover 3 is sleeved on the outside of the straight tube casting channel 2. The inner side of the protection cover 3 is provided with a limiting cavity 33 and a protection cavity 31 for guiding the straight tube casting channel 2, which does not affect the circulation of the molten metal. The limiting cavity 33 is sleeved on the discharge top of the straight tube casting channel 2. The inner side edge of the protection cover 3 is provided with a protective gasket 34 and a fitting gasket 32. The protective gasket 34 is arranged in the limiting cavity 33, and the fitting gasket 32 ​​is arranged in the protective cavity 31. The fitting gasket 32 ​​is an arc-shaped structure that arches upward. The fitting gasket 32 ​​and the protective gasket 34 are conveniently and more effectively pressed and installed above the object to be cast to reduce the intake of air.

[0023] An air inlet pipe 35 is provided at the bottom end of one side of the protective cover 3, and an air guide pipe 36 is provided at the top end of the other side. The reason for this arrangement is that the weight of argon is greater than that of air. Therefore, the air is discharged from the protective cover 3 in a downward direction, so that the protective cover 3 can form an argon protection effect and reduce the oxidation of the molten metal. The air inlet pipe 35 is connected to the outlet of the argon outlet device 5, and the end of the air guide pipe 36 is connected to a liquid inlet pipe 37; when in use, the liquid inlet pipe 37 extends into the gas cylinder 4, and the gas cylinder 4 is provided with a solution. The top of the gas cylinder 4 is provided with an outlet pipe. When in use, the liquid inlet pipe 37 is inserted deep into the interior of the gas cylinder 4 to visualize the effect of air discharge, that is, through the continuous bubbles coming out of the gas cylinder, it can be judged that the argon gas has been introduced into the protective cover 3, and the molten metal can be released for lost foam casting.

[0024] In order to better control the entry and interception of argon gas, the inlet pipe 35 and the air guide pipe 36 are both provided with a one-way shut-off valve, which can be used to control the conduction of argon gas on the one hand, and can also prevent the reverse flow of water from the gas cylinder 4. The bottom of the protective cover 3 is open, which is convenient for dispersing air from bottom to top; the fitting gasket 32 ​​and the protective gasket 34 are both set in an irregular arc shape and fit tightly to the inner wall of the protective cover 3; the outlet pipe includes an outlet pipe 41 and a return pipe 42, and the outlet pipe 41 is connected to the outside Atmosphere, the air outlet pipe 41 is connected to the atmosphere, which is mainly used for the process of air just coming out of the front end to facilitate the discharge of air; at the same time, the return air pipe 42 is connected to the air inlet of the argon outlet device 5 to allow the argon gas to be reused. When bubbles have been continuously emitted from the rear end, it means that the air has been exhausted. At this time, all the bulging gas in the protective cover 3 is argon gas. At this time, the argon gas is recovered to the air inlet of the argon outlet device through the return air pipe, which is convenient for recycling and reuse; in order to facilitate installation and use, the air guide pipe 36 and the return air pipe 42 are both telescopic hoses.

[0025] Working principle:

[0026] When the utility model is in use, the casting bucket is adjusted to a suitable position, and then the protective cover is sleeved on the outer side of the straight tube casting channel, the protective cover is adjusted to just cover the mold to be cast, and then argon gas is introduced into the protective cover, and argon gas is introduced into the air inlet pipe through the air outlet of the argon gas outlet device. At this time, the one-way shut-off valve is opened to allow the argon gas to pass into the protective cover. Since the other end of the protective cover is connected to an air guide pipe, and the end of the air guide pipe is connected to the liquid inlet pipe, by observing the gas continuously discharged from the liquid inlet pipe, it can be shown that the air has been completely discharged. In the early stage of exhaust, the air outlet pipe is opened to allow the air to flow back to the atmosphere. After the exhaust is exhausted for a period of time, the air outlet pipe is closed and the return pipe is opened, and the gas is re-discharged into the air inlet of the argon gas outlet device through the return pipe, which is convenient for the recovery and reuse of the argon gas, reduces the oxidation of the metal liquid, and reduces the waste of resources.

[0027] The exemplary implementation scheme of the present disclosure is described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present disclosure, various modifications and variations can be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present disclosure can be combined in various ways without exceeding the protection scope of the present disclosure, which is determined by the attached claims.

Claims

1. An argon protection device for aluminum alloy casting, characterized in that: It comprises a protective cover (3) installed on the outside of a straight tube casting channel (2) of a casting bucket (1), the inner side of the protective cover (3) is provided with a limiting cavity (33) and a protective cavity (31) for guiding the straight tube casting channel (2), the limiting cavity (33) is sleeved on the discharge top of the straight tube casting channel (2), the inner side edge of the protective cover (3) is provided with a protective gasket (34) and a fitting gasket (32), the protective gasket (34) is arranged in the limiting cavity (33), the fitting gasket (32) is arranged in the protective cavity (31), and the fitting gasket (32) is an arc-shaped structure that arches upward; An air inlet pipe (35) is provided at the bottom end of one side of the protective cover (3), and an air guide pipe (36) is provided at the top end of the other side. The air inlet pipe (35) is connected to the air outlet of the argon gas outlet device (5), and the end of the air guide pipe (36) is connected to a liquid inlet pipe (37). When in use, the liquid inlet pipe (37) extends into the gas cylinder (4), a solution is provided in the gas cylinder (4), and an outlet pipe is provided at the top of the gas cylinder (4).

2. The argon protection device for aluminum alloy casting according to claim 1, characterized in that: The air inlet pipe (35) and the air guide pipe (36) are both provided with one-way shutoff valves.

3. The argon protection device for aluminum alloy casting according to claim 1, characterized in that: The bottom of the protective cover (3) is open.

4. The argon protection device for aluminum alloy casting according to claim 1, characterized in that: The fitting gasket (32) and the protective gasket (34) are both arranged in an irregular arc shape and are tightly fitted on the inner wall of the protective cover (3).

5. The argon protection device for aluminum alloy casting according to claim 1, characterized in that: The outlet pipe comprises an outlet pipe (41) and a return pipe (42); the outlet pipe (41) is connected to the atmosphere, and the return pipe (42) is connected to the air inlet of the argon outlet device (5), so that the argon gas can be reused.

6. The argon protection device for aluminum alloy casting according to claim 1, characterized in that: The air guide pipe (36) and the air return pipe (42) are both telescopic hoses.

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