Horizontal vacuum induction furnace capable of automatically cleaning observation window

By installing a venting valve and an air inlet pipe on the vacuum induction furnace, the problem of observation window contamination is solved by using high-speed airflow to clean the observation window, achieving automatic cleaning and cost reduction.

CN223564723UActive Publication Date: 2025-11-18CHINA IRON & STEEL RESEARCH INSTITUTE GROUP CO LTD
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Patent Information

Application Number
CN202422823662.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-19
Publication Date
2025-11-18
Estimated Expiration
2034-11-19

AI Technical Summary

Technical Problem

The observation window of the vacuum induction furnace is easily contaminated by volatiles and dust during the smelting process, resulting in poor observation. Existing cleaning methods are cumbersome and costly.

Method used

A venting valve and an air inlet pipe are installed on the furnace shell of the vacuum induction furnace. The air introduced after smelting is completed forms a high-speed airflow, which cleans the observation window through an air nozzle, thus achieving self-cleaning.

Benefits of technology

It achieves automatic cleaning of the observation window, simplifies the operation process, reduces costs, does not occupy additional work space, and ensures the observation effect.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model relates to a horizontal vacuum induction furnace capable of automatically cleaning an observation window, belongs to the technical field of vacuum smelting equipment, and solves the problems that in the prior art, the observation window of the vacuum induction furnace is difficult to clean or a cleaning device is complicated, so that extra space is occupied, and the cost is high. The vacuum induction furnace comprises a furnace shell, an observation window and a vacuum breaking valve are installed on the upper wall of the furnace shell, the vacuum breaking valve is connected with an air inlet pipe, the air inlet pipe is located in the furnace shell, and the other end of the air inlet pipe is aligned to the face, located in the furnace shell, of the observation window but not in contact with the observation window. According to the utility model, through a simple purging structure, the quartz glass of the observation window is purged by high-speed air flow entering from the vacuum breaking valve during vacuum breaking of the vacuum furnace, so that the self-cleaning of the observation window is realized.
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Description

TECHNICAL FIELD

[0001] The utility model relates to vacuum smelting equipment technical field especially relates to a horizontal vacuum induction furnace of automatic cleaning observation window. BACKGROUND

[0002] Vacuum induction furnace is widely used in the field of vacuum metallurgy, is under the condition of heating, melting, refining, alloying and pouring smelting equipment in vacuum, mainly by vacuum system, electric heating system, sealable furnace shell, crucible constitutes.

[0003] But in the smelting process will produce volatile and dust, very easy to adhere to the quartz glass of observation window, affect the observation effect, therefore, people in the molten pool and observation window between the set metal baffle, to avoid the quartz glass of observation window to be contaminated, only when the operator observes the molten pool to remove the baffle, after observation end needs immediately with metal baffle to shield observation window, in order to avoid the pollution of observation window, the operator can only observe the molten pool for a short time, and when the quartz glass transparency of observation window is poor, still need to remove the observation window after smelting by artificial wiping the surface of quartz glass pollution.

[0004] To solve the above problems, the utility model provides a kind of vacuum induction furnace with observation window purging device, the self-cleaning of observation window is realized by purging device, and air compression equipment is not needed. UTILITY MODEL CONTENT

[0005] In view of the above analysis, the utility model aims at providing a kind of vacuum induction furnace of automatic cleaning observation window, to solve the problem that the observation window of vacuum induction furnace is difficult to clean or the cleaning device is complex in prior art, which leads to additional occupation of site and high cost.

[0006] The specific implementation of the utility model provides a kind of horizontal vacuum induction furnace of automatic cleaning observation window, the vacuum induction furnace includes furnace shell, the observation window and the broken air valve are installed on the furnace shell upper wall, the broken air valve is connected with the air inlet pipe, the air inlet pipe is located in the inside of the furnace shell, and the other end of the air inlet pipe is located below the observation window.

[0007] Further, the other end of the air inlet pipe is aligned with the observation window on the inside of the furnace shell but does not contact.

[0008] Further, the end of the air inlet pipe connected with the air nozzle is aligned with the observation window, and the cleaning of the observation window is realized by the air outside the furnace introduced through the broken air valve and the air inlet pipe.

[0009] Further, during metal smelting, the broken air valve is closed, and the inside of the furnace shell is in a vacuum state.

[0010] Further, after the metal smelting is finished, the air breaking valve is opened, the outside air is introduced, the high-speed airflow is formed after passing through the air inlet pipe, the high-speed air flow sprayed from the air nozzle washes the quartz glass of the observation window, and the cleaning of the observation window is realized.

[0011] Further, the distance between the air breaking valve and the observation window is 300-800mm.

[0012] Further, the distance between the air nozzle and the observation window is 50-100mm, and the angle is 30-60°.

[0013] Further, the diameter of the air inlet pipe is 5-15mm.

[0014] Further, the vacuum induction furnace further comprises a crucible, the crucible is located in the center of the furnace shell, and is used for smelting metal.

[0015] Further, the observation window is obliquely aligned with the crucible.

[0016] Further, the vacuum induction furnace further comprises a vacuum system, the vacuum system is connected to the outside of the furnace shell, and is used for vacuumizing the furnace shell.

[0017] Further, the vacuum induction furnace further comprises a feeding system, the feeding system is connected to the furnace shell directly above the crucible.

[0018] Compared with the prior art, the utility model at least can realize following beneficial effect one:

[0019] 1, the vacuum induction furnace of the utility model connects the air inlet pipe on the air breaking valve, forms the high-speed airflow with the air that enters from the air breaking valve after smelting is finished, utilizes high-speed air flow to directly blow the observation window, realizes the cleaning of the observation window, the air breaking valve is located on the furnace shell upper wall of the vacuum induction furnace, the air inlet pipe is located in the inside of the furnace shell, and the equipment is simple, and additional work site is not occupied;The vacuum induction furnace of the utility model utilizes the air that enters when breaking the air, does not need to be additionally matched with air compression equipment, saves work site, and reduces cost.

[0020] 2, the air nozzle connected to one end of the air inlet pipe that aligns the observation window in the utility model can further guarantee that the airflow is uniformly and high-speed sprayed on the observation window, and the cleaning of the observation window is better completed.

[0021] 3,The broken air valve of the vacuum induction furnace on the furnace shell has two states, when smelting metal, the broken air valve is closed, so as to maintain the vacuum state of the inside of the furnace shell, when smelting is completed, the broken air valve is opened, and external air is introduced, not only the air pressure inside and outside the furnace is balanced, so that the furnace door is safely opened and the treated product is taken out, but also the self-cleaning of the observation window is realized, and two things are achieved at one time.

[0022] 4,The distance between the broken air furnace and the observation window, the distance and angle between the air nozzle and the observation window, and the diameter of the air inlet pipe can be controlled, so that the flow rate of the introduced air can be better controlled, the accuracy of the purging is guaranteed, and the line of sight of the observer is not blocked;

[0023] In addition, the observation window is obliquely aligned with the crucible of the vacuum induction furnace, so that the molten pool condition in the crucible can be observed conveniently.

[0024] In the utility model, the above technical solutions can be combined with each other to realize more preferred combination solutions. Other features and advantages of the utility model will be described in the following content, and part of the advantages can become apparent from the description, or be understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the content specially pointed out in the text and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings are only used for the purpose of showing specific embodiments, and are not considered as limiting the utility model, and the same reference signs represent the same parts throughout the drawings.

[0026] Figure 1 The structure schematic diagram of the horizontal vacuum induction furnace provided by the utility model is shown in the figure;

[0027] Reference signs:

[0028] 1-observation window;2-broken air valve;3-air inlet pipe;4-furnace shell;5-crucible;6-vacuum system;7-furnce door gap;8-feeding system;9-nozzle. DETAILED DESCRIPTION

[0029] The preferred embodiments of the utility model will be described in detail below in combination with the drawings, wherein the drawings constitute a part of the utility model, and are used together with the embodiments of the utility model to explain the principles of the utility model, and are not used to limit the scope of the utility model.

[0030] A vacuum induction furnace is provided with an observation window on the furnace shell, and the molten pool condition in the crucible can be observed through the transparent quartz glass of the observation window; however, volatile matter and dust are generated during smelting, which easily adhere to the quartz glass of the observation window, affecting the observation effect; in view of the problem, a metal baffle is arranged between the molten pool and the observation window to avoid the pollution of the quartz glass of the observation window, but the baffle is removed only when the operator observes the molten pool, and the baffle needs to be used to shield the observation window immediately after the observation is completed, and in order to avoid the pollution of the observation window, the operator can only observe the molten pool for a short time, in addition, when the transparency of the quartz glass of the observation window is poor, the observation window needs to be removed after smelting is completed, and the surface pollution of the quartz glass is manually removed, and the cleaning process of the observation window is complicated and difficult.

[0031] Therefore, the utility model provides a kind of vacuum induction furnace of automatic cleaning observation window, as shown in Figure 1 The vacuum induction furnace includes furnace shell 4, observation window 1 and broken air valve 2 are installed on the upper wall of furnace shell 4, broken air valve is connected with air inlet pipe 3, air inlet pipe 3 is located in the inside of furnace shell 4, and the other end of air inlet pipe 3 is located below observation window 1.

[0032] The utility model discloses a vacuum induction furnace is connected with air inlet pipe on broken air valve, forms high-speed airflow with the air that enters from broken air valve after smelting, and the cleaning of observation window is realized by using high-speed airflow to directly blow observation window.The broken air valve is located on the upper wall of the furnace shell of the vacuum induction furnace, and the air inlet pipe is located in the inside of the furnace shell, so that the equipment is simple, and additional working space is not occupied;The utility model discloses a vacuum induction furnace utilizes the air that enters when broken, and does not need to be additionally matched with air compression equipment, so that the cost is reduced.

[0033] Further, the other end of the air inlet pipe 3 is aligned with the side of the observation window 1 in the furnace shell but does not contact, so that the observation effect of the observation window is not affected and the air inlet pipe is not contacted with dust to avoid blockage under the condition that the observation window 1 is effectively cleaned.

[0034] Further, the air nozzle 9 is connected to the end of the air inlet pipe that is aligned with the observation window.

[0035] It should be noted that the air nozzle connected to the end of the air inlet pipe that is aligned with the observation window in the utility model can further ensure that the airflow is uniformly and high-speed sprayed on the observation window, so that the cleaning of the observation window is better completed.

[0036] Further, during metal smelting, the broken air valve is closed, and the inside of the furnace shell is in a vacuum state.

[0037] Further, after the metal smelting is finished, the air breaking valve is opened, external air is introduced, high-speed airflow is formed after passing through the air inlet pipe, and the high-speed air flow sprayed from the air nozzle washes the quartz glass of the observation window, so that the observation window is cleaned.

[0038] It should be noted that the air breaking valve of the vacuum induction furnace on the furnace shell has two states, when smelting metal, the air breaking valve is closed to maintain the vacuum state inside the furnace shell, when smelting is finished, the air breaking valve is opened to introduce external air, which not only balances the air pressure inside and outside the furnace to safely open the furnace door and take out the processed product, but also realizes self-cleaning of the observation window, and achieves two purposes at once.

[0039] Further, the distance between the air breaking valve and the observation window of the utility model is 300-800mm, so that the device is more compact.

[0040] Further, the distance between the air nozzle and the observation window of the utility model is 50-100mm, and the angle is 30-60°, which not only ensures the effectiveness of the blowing, but also does not block the line of sight of the observer.

[0041] Further, the diameter of the air inlet pipe of the utility model is 5-15mm, and the material is copper or stainless steel, which better controls the flow rate of the introduced air and ensures the effectiveness of the blowing.

[0042] Further, the material of the observation window of the utility model is quartz glass, which is resistant to temperature and dirt and easy to clean.

[0043] Further, the vacuum induction furnace further comprises a crucible 5, the crucible 5 is located in the center of the furnace shell, and is used for smelting metal.

[0044] Further, the observation window 1 of the utility model is inclined to align with the crucible 5 of the vacuum induction furnace, so as to facilitate observation of the molten pool condition in the crucible 5.

[0045] Further, the vacuum induction furnace further comprises a vacuum system 6, the vacuum system 6 is connected to the outside of the furnace shell, and is used for vacuumizing the furnace shell 4.

[0046] Further, the vacuum induction furnace further comprises a feeding system 8, the feeding system 8 is connected to the upper wall of the furnace shell 4 above the crucible 5.

[0047] Example 1

[0048] A 50kg horizontal vacuum induction furnace, such as Figure 1As shown, the furnace includes a furnace shell 4, an observation window 1 and a venting valve 2 installed on the upper wall of the furnace shell, a copper air inlet pipe 3 connected to the venting valve 2, and a copper air nozzle 9 connected to one end of the air inlet pipe 3 aligned with the observation window 1; wherein, the observation window 1 is made of quartz glass, the distance between the observation window 1 and the venting valve 2 is 300mm, the distance between the nozzle 9 and the observation window 1 is 100mm, the angle is 30°, and the diameter of the air inlet pipe 3 is 5mm;

[0049] In addition, the 50kg horizontal vacuum induction furnace also includes a crucible 5, a vacuum system 6, and a feeding system 8;

[0050] During the metal smelting process, the vent valve 2 is closed to maintain a vacuum inside the furnace shell 4;

[0051] After the metal smelting is completed, the venting valve 2 is opened, and the introduced air from outside the furnace passes through the air inlet pipe 3 to form a high-speed airflow. The high-speed airflow ejected from the nozzle 9 washes the quartz glass of the observation window 1 inside the furnace shell 4 to clean the observation window 1. At the same time, the vacuum condition inside the furnace is broken. When the air pressure inside the furnace is the same as outside the furnace, the nozzle automatically stops blowing, the venting valve is closed, the cleaning of the observation window 1 is completed, and the furnace door is opened to take out the processed product.

[0052] Example 2

[0053] A 200kg horizontal vacuum induction furnace, such as Figure 1 As shown, the furnace includes a furnace shell 4, an observation window 1 and a venting valve 2 installed on the upper wall of the furnace shell, a stainless steel air inlet pipe 3 connected to the venting valve 2, and a stainless steel air nozzle 9 connected to one end of the air inlet pipe 3 aligned with the observation window 1; wherein, the material of the observation window 1 is quartz glass, the distance between the observation window 1 and the venting valve 2 is 500mm, the distance between the nozzle 9 and the observation window 1 is 100mm, the angle is 60°, and the diameter of the air inlet pipe 3 is 10mm;

[0054] In addition, the 200kg horizontal vacuum induction furnace also includes a crucible 5, a vacuum system 6, and a feeding system 8;

[0055] During the metal smelting process, the vent valve 2 is closed to maintain a vacuum inside the furnace shell 4;

[0056] After the metal smelting is completed, the venting valve 2 is opened, and the introduced air from outside the furnace passes through the air inlet pipe 3 to form a high-speed airflow. The high-speed airflow ejected from the nozzle 9 washes the quartz glass of the observation window 1 inside the furnace shell 4 to clean the observation window 1. At the same time, the vacuum condition inside the furnace is broken. When the air pressure inside the furnace is the same as outside the furnace, the nozzle automatically stops blowing, the venting valve is closed, the cleaning of the observation window 1 is completed, and the furnace door is opened to take out the processed product.

[0057] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A horizontal vacuum induction furnace which automatically cleans an observation window, the vacuum induction furnace comprising a furnace shell, characterized by, The upper wall of the furnace shell is provided with an observation window and a vacuum breaking valve, and the vacuum breaking valve is connected with an air inlet pipe, the air inlet pipe is located in the interior of the furnace shell, and the other end of the air inlet pipe is located below the observation window; Wherein, the other end of the air inlet pipe is aligned with one side of the observation window inside the furnace shell but does not contact; the end of the air inlet pipe aligned with the observation window is connected with an air nozzle, and the air outside the furnace introduced through the vacuum breaking valve and the air inlet pipe realizes the cleaning of the observation window.

2. The vacuum induction furnace according to claim 1, characterized in that The distance between the vacuum breaking valve and the observation window is 300-800mm.

3. The vacuum induction furnace according to claim 1, characterized in that The distance between the air nozzle and the observation window is 50-100mm, and the angle is 30-60°.

4. The vacuum induction furnace according to claim 1, characterized in that, The diameter of the air inlet pipe is 5-15mm.

5. Vacuum induction furnace according to any one of claims 1 to 4, characterized in that The vacuum induction furnace further comprises a crucible, which is located in the center of the furnace shell and is used for the smelting of metal.

6. The vacuum induction furnace according to claim 5, characterized in that The observation window is obliquely aligned with the crucible.

7. The vacuum induction furnace according to claim 5, characterized in that The vacuum induction furnace further comprises a vacuum system, which is connected to the outside of the furnace shell and is used for vacuumizing the furnace shell.

8. The vacuum induction furnace of claim 5, wherein The vacuum induction furnace further comprises a vacuum system and a feeding system, and the feeding system is connected to the furnace shell directly above the crucible.