CN113390271A

CN113390271A - Low-vacuum intermediate-frequency casting device

Info

Publication number: CN113390271A
Application number: CN202110647061.7A
Authority: CN
Inventors: 苏雷虹
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2021-09-14

Abstract

The invention provides a low vacuum intermediate frequency casting device, which comprises an intermediate frequency casting furnace and a casting box, wherein the casting box is provided with a sprue gate, and is characterized in that: and the intermediate frequency casting furnace and the casting box are integrally sealed by adopting a sealing cover, namely the intermediate frequency casting furnace and the casting box are integrally positioned in an inner cavity of the sealing cover, the inner cavity of the sealing cover is in a low vacuum atmosphere, and the inner cavity of the sealing cover is externally connected with a smoke dust filter. The device has the advantages of simple and ingenious structure, low device cost, low implementation cost, great reduction in cost especially compared with the existing vacuum casting furnace, simple operation, good stability and easy dust removal and adjustment, and can well prevent the leakage of smoke dust and gas in the casting process and realize the complete filtration of harmful smoke dust so as to completely meet the environmental protection requirement.

Description

Low-vacuum intermediate-frequency casting device

Technical Field

The invention relates to the technical field of casting, in particular to a low-vacuum intermediate-frequency casting device.

Background

In the smelting and casting process, a large amount of smoke dust is generated, so that the environmental pollution is serious, and the harm to operators and the damage to equipment are caused. For this reason, dust or smoke removal equipment is often required to collect the smoke.

In the prior art, document CN202254877U discloses a fusion casting furnace smoke dust collecting device, which includes a dust hood disposed above the fusion casting furnace, a charging door disposed on a side portion of the dust hood, a front smoke exhaust pipe and a rear smoke exhaust pipe, wherein the front smoke exhaust pipe is connected to a top portion of the dust hood, and a switching structure is disposed between the front smoke exhaust pipe and the rear smoke exhaust pipe, the switching structure is used for communicating the front smoke exhaust pipe and the rear smoke exhaust pipe and can rotate hermetically relative to the front smoke exhaust pipe and the rear smoke exhaust pipe; document CN205926544U discloses a fusion casting dust removing device, which includes a dust collecting cover, the dust collecting cover is connected with a first dust collecting pipeline through the top end of the dust collecting cover, the first dust collecting pipeline is connected to a second dust collecting pipeline in a horizontal rotation manner around a vertical axis, an exhaust fan is installed on the second dust collecting pipeline, the second dust collecting pipeline is fixed on a support, and the outlet of the exhaust fan is connected with the dust exhaust pipeline and extends out of a workshop.

However, the fusion casting dust removal or smoke removal device has the problems of leakage of smoke dust, complex equipment and high implementation cost.

Disclosure of Invention

The invention aims to provide a low-vacuum medium-frequency casting device which is at least used for solving the problem of smoke dust leakage in the smelting and casting process.

In order to achieve the above object, the present invention adopts the following technical solutions.

The utility model provides a low vacuum intermediate frequency founding device, includes intermediate frequency founding stove and foundry goods case, is provided with the sprue gate on the foundry goods case, its characterized in that: and the intermediate frequency casting furnace and the casting box are integrally sealed by adopting a sealing cover, namely the intermediate frequency casting furnace and the casting box are integrally positioned in an inner cavity of the sealing cover, the inner cavity of the sealing cover is in a low vacuum atmosphere, and the inner cavity of the sealing cover is externally connected with a smoke dust filter. The low vacuum means that the pressure in the inner cavity of the sealing cover is not more than 0.05 standard atmospheric pressure.

In order to better prevent the smoke dust from leaking and reduce the cost of the low-vacuum intermediate frequency casting device, the sealing cover comprises a cover body and a cover cap, a liquid storage tank is arranged on the cover body, and the lower end of the cover cap is immersed below the liquid level in the liquid storage tank.

In order to reduce the operation difficulty of casting and smoke dust collection, the lower end of the cover cap is placed in the liquid storage tank.

In order to improve the stability in the smoke and dust collecting process, the liquid storage tank is provided with two edges, and the inner edge positioned on the inner side is higher than the outer edge positioned on the outer side.

In order to further reduce the implementation cost of smoke collection, the liquid contained in the liquid storage tank is preferably water glass solution or polyvinyl alcohol solution.

In order to improve the casting production efficiency, a furnace cover of the intermediate frequency casting furnace is fixedly connected with a cover cap of the sealing cover, when the lower end of the cover cap is placed in the liquid storage tank, the furnace cover is just positioned above the intermediate frequency casting furnace, the furnace cover is made of heat-insulating materials, and attention is paid to the following steps: the furnace cover is positioned above the intermediate frequency casting furnace but can not be sealed with the intermediate frequency casting furnace.

In order to conveniently adjust the pressure of the inner cavity of the sealing cover, an axial flow fan, preferably a variable frequency axial flow fan, is arranged on the air inlet channel and/or the air outlet channel of the smoke filter.

In order to facilitate production, an observation hole is arranged on the cover cap of the sealing cover.

In order to improve the casting quality, a carbon dioxide generator is arranged in the inner cavity of the sealing cover, or an inert gas generating device is externally connected to the inner cavity of the sealing cover so as to realize casting under a protective atmosphere.

Furthermore, the sealed cowling is provided with the bleed valve, the sealed cowling inner chamber is provided with the manipulator that is used for the sample and/or feeds in raw material, be provided with hoist and mount parts (like lug, rings) on the shroud of sealed cowling.

Has the advantages that: the device has the advantages of simple operation, good stability, easy dust removal and adjustment, and especially can easily introduce the smoke dust and gas in the casting process into the smoke dust filter for filtering. In addition, the low pressure in the inner cavity of the sealing cover is beneficial to smelting.

Drawings

FIG. 1 is a schematic view of a low vacuum intermediate frequency casting apparatus in an embodiment.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the following embodiments are only used for understanding the principle of the present invention and the core idea thereof, and do not limit the scope of the present invention. It should be noted that modifications to the invention as described herein, which do not depart from the principles of the invention, are intended to be within the scope of the claims which follow.

Examples

Referring to fig. 1, the low vacuum intermediate frequency casting device comprises an intermediate frequency casting furnace 7 and a casting box 5, wherein a crucible 8 is arranged in the intermediate frequency casting furnace 7, a pouring gate 6 is arranged on the casting box 5, the intermediate frequency casting furnace 7 and the casting box 5 are integrally sealed by a sealing cover, the inner cavity of the sealing cover is in a low vacuum atmosphere, and a smoke dust filter 12 is externally connected to the inner cavity of the sealing cover. The sealing cover comprises a cover body 1 and a cover cap 4, a liquid storage tank 2 is arranged on the cover body 2, and the lower end of the cover cap 4 is placed in the liquid storage tank 2 and is submerged below the liquid level of the liquid storage tank 2; the liquid storage tank 2 is provided with two edges, and the inner edge positioned on the inner side is higher than the outer edge positioned on the outer side; the liquid in the liquid storage tank 2 can be water, and more preferably, a water glass solution, a polyvinyl alcohol solution or other liquid for preventing burning and explosion is used.

In this embodiment, a variable frequency axial flow fan 10 is disposed on the air inlet channel 11 of the soot filter 12 and/or a variable frequency axial flow fan 13 is disposed on the air outlet channel, so as to easily and flexibly adjust the air pressure in the inner cavity of the sealing cover. An observation hole is arranged on the cover cap 4 of the sealing cover, and a lens is arranged at the observation hole so as to observe the condition of the inner cavity of the sealing cover.

In a further application scheme, in order to improve the casting production efficiency, a furnace cover 9 of the intermediate frequency casting furnace 7 is fixedly connected with a cover cap 4 of a sealing cover, and when the lower end of the cover cap 4 is placed in the liquid storage tank 2, the furnace cover 9 just covers the intermediate frequency casting furnace 7. With such a configuration, the seal cover and the intermediate frequency melting and casting furnace 7 can be opened and closed synchronously.

In a further application scheme, a carbon dioxide generator is arranged in the inner cavity of the sealing cover, or an inert gas generating device is externally connected to the inner cavity of the sealing cover so as to realize casting under a protective atmosphere.

In a further application scheme, a deflation valve 15 is arranged on the sealing cover, a mechanical arm for sampling and/or feeding is arranged in the inner cavity of the sealing cover, and a hoisting part 14 is arranged on the cover cap 4 of the sealing cover.

When the device is used, the cover cap 4 is taken down, the cover cap 4 is covered after feeding is finished, whether the liquid level in the liquid storage tank 2 meets the sealing requirement is checked, if the liquid level meets the sealing requirement, casting can be started, main process steps for casting are executed according to the existing standard procedures, a melt is poured into the casting box 5 after smelting, the axial flow fan and the smoke dust filter 12 are operated in the casting process to remove smoke and dust, and the cover cap 4 is lifted away after casting is finished.

This low vacuum intermediate frequency founding device's structure is extremely simple and ingenious, not only can prevent the dust of founding in-process, gas leakage well, realize the whole filtration of harmful smoke and dust, make it accord with the environmental protection requirement completely, it is with low costs to have the device moreover, implementation cost is low, especially compare in the cost of current vacuum founding stove and obtain reducing by a wide margin, still have easy operation, stability is good, easily remove dust and the advantage of regulation, especially can be very light with the dust of founding in-process, gaseous introduction smoke and dust filter filters, the low atmospheric pressure of sealed cowling inner chamber still is profitable to be smelted.

Claims

1. The utility model provides a low vacuum intermediate frequency founding device, includes intermediate frequency founding stove (7) and foundry goods case (5), is provided with sprue gate (6) on foundry goods case (5), its characterized in that: and the intermediate frequency casting furnace (7) and the casting box (5) are integrally sealed by adopting a sealing cover, the inner cavity of the sealing cover is in a low vacuum atmosphere, and a smoke dust filter (12) is externally connected to the inner cavity of the sealing cover.

2. The low vacuum intermediate frequency fusion casting apparatus as set forth in claim 1, wherein: the sealing cover comprises a cover body (1) and a cover cap (4), a liquid storage tank (2) is arranged on the cover body (2), and the lower end of the cover cap (4) is immersed below the liquid level in the liquid storage tank (2).

3. The low vacuum intermediate frequency fusion casting apparatus as set forth in claim 2, wherein: the lower end of the cover cap (4) is placed in the liquid storage tank (2).

4. The low vacuum intermediate frequency fusion casting apparatus as set forth in claim 3, wherein: the liquid storage tank (2) is provided with two edges, and the inner edge positioned on the inner side is higher than the outer edge positioned on the outer side.

5. The low vacuum intermediate frequency fusion casting apparatus according to claim 4, wherein: the liquid contained in the liquid storage tank (2) is water glass solution or polyvinyl alcohol solution.

6. Low vacuum intermediate frequency fusion casting apparatus according to any of claims 1-5, characterized in that: the furnace cover (9) of the intermediate frequency casting furnace (7) is fixedly connected with the cover cap (4) of the sealing cover, and when the lower end of the cover cap (4) is placed in the liquid storage tank (2), the furnace cover (9) is just positioned above the intermediate frequency casting furnace (7).

7. The low vacuum intermediate frequency fusion casting apparatus as set forth in claim 6, wherein: and a variable frequency axial flow fan is arranged on the air inlet channel and/or the air outlet channel of the smoke dust filter (12).

8. The low vacuum intermediate frequency fusion casting apparatus as set forth in claim 7, wherein: an observation hole is arranged on the cover cap (4) of the sealing cover.

9. The low vacuum intermediate frequency fusion casting apparatus as set forth in claim 8, wherein: the inner cavity of the sealing cover is provided with a carbon dioxide generator, or the inner cavity of the sealing cover is externally connected with an inert gas generating device so as to realize casting under protective atmosphere.

10. The low vacuum intermediate frequency fusion casting apparatus as set forth in claim 9, wherein: be provided with bleed valve (15) on the sealed cowling, the sealed cowling inner chamber is provided with and is used for the sample and/or reinforced manipulator, be provided with hoist and mount part (14) on the shroud (4) of sealed cowling.