Observation window of medium-frequency vacuum induction melting furnace

Abstract

The utility model discloses an observation window of a medium frequency vacuum induction melting furnace, which comprises a lower end cover, an upper end cover, an observation window mirror seat, an observation window and a rotating mechanism, the upper end cover and the lower end cover are mutually fastened and connected through a fastening connection mechanism, the observation window mirror seat is arranged between the lower end cover and the upper end cover and is rotatably connected on the lower end cover through a bearing, and the observation window is arranged on the observation window mirror seat. A plurality of lens installation windows are arranged on the observation window lens base in the circumferential direction at intervals, observation lenses are installed in the lens installation windows, a first observation through hole is formed in the lower end cover, a second observation through hole is formed in the upper end cover, an observation window corresponding to the second observation through hole is installed on the upper surface of the upper end cover, and transparent glass is installed in the observation window. The rotating mechanism comprises a rotating shaft, a rotating shaft seat and a hand wheel, the lower end of the rotating shaft is connected with the observation window mirror seat, and the upper end of the rotating shaft is connected with the hand wheel. The observation window mirror base is light and convenient to rotate, good in sealing performance and capable of guaranteeing the vacuum degree in a furnace and guaranteeing the product quality.

Description

Technical Field

[0001] The utility model relates to the technical field of smelting equipment in the metallurgical industry, in particular to an observation window of a medium-frequency vacuum induction smelting furnace. Background Art

[0002] The observation window is an indispensable component of the vacuum melting furnace. It is necessary to check the melting state of the alloy through the observation window to determine the next step of work, and at the same time, to ensure the vacuum degree in the vacuum melting furnace.

[0003] In the currently used observation windows, the protruding pin at the bottom of the observation window mirror seat is rotatably connected to the lower end cover. A gear is installed on the top of the observation window mirror seat, and a rotating shaft is installed on the upper end cover of the observation window. A handwheel is installed on the upper part of the rotating shaft, and a gear is installed on the lower part. The gear at the lower part of the rotating shaft cooperates with the gear installed on the top of the observation window mirror seat. The operator rotates the handwheel, and the transmission of the rotating shaft and gear drives the observation window mirror seat to rotate. The above installation and gear transmission method of the observation window mirror seat makes it difficult to rotate the observation window mirror seat. The gears are easily worn after long-term use, resulting in failure of the cooperation. As a result, the observation window mirror seat cannot be rotated by rotating the handwheel, and the melting state of the alloy cannot be clearly viewed. In addition, there is a gap between the rotating shaft and the rotating shaft seat, which affects the vacuum degree in the furnace, resulting in substandard product quality. Utility Model Content

[0004] The purpose of the utility model is to provide an observation window for a medium frequency vacuum induction melting furnace to solve the problems existing in the above-mentioned prior art. The observation window mirror seat is easy to rotate and has good sealing performance, which can ensure the vacuum degree in the furnace and ensure product quality.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] The utility model provides an observation window of a medium-frequency vacuum induction melting furnace, comprising a lower end cover, an upper end cover, an observation window mirror seat, an observation window and a rotating mechanism, wherein the upper end cover is arranged on the upper surface of the lower end cover, the upper end cover and the lower end cover are fastened to each other by a fastening connection mechanism, the observation window mirror seat is arranged between the lower end cover and the upper end cover, and is rotatably connected to the lower end cover through a bearing, the upper end cover and the lower end cover on the outer side of the observation window mirror seat are sealed by a first sealing ring, a plurality of lens mounting windows are provided on the observation window mirror seat at intervals along the circumferential direction, different observation lenses are respectively installed in each of the lens mounting windows, and a device is provided on the lower end cover that can be aligned with each of the observation lenses The first observation through hole is aligned with the first observation through hole, and the upper end cover is provided with a second observation through hole coaxial with the first observation through hole, the upper surface of the upper end cover is provided with the observation window corresponding to the second observation through hole, and transparent glass is installed in the observation window, and the observation window and the upper surface of the upper end cover outside the second observation through hole are sealed by a second sealing ring, the rotating mechanism includes a rotating shaft, a rotating shaft seat and a handwheel, the lower end of the rotating shaft passes through the upper end cover and is connected to the observation window mirror seat, and the upper end is connected to the handwheel, the rotating shaft seat is sleeved on the rotating shaft and is sealed to the rotating shaft, the rotating shaft seat is fixed on the upper end cover, and is sealed to the upper surface of the upper end cover by a third sealing ring.

[0007] Preferably, the bottom of the observation window mirror seat is rotatably connected to the lower end cover through a thrust ball bearing.

[0008] Preferably, the fastening connection mechanism includes a fastening bolt, a plum blossom handwheel and a pin shaft, each end of the upper end cover is provided with an upper lug group, the upper lug group includes two upper lugs arranged at intervals, and each end of the lower end cover is provided with a lower lug group, the lower lug group includes two lower lugs arranged at intervals, the lower lug group corresponds to the upper lug group one-to-one, and the lower lugs correspond to the upper lugs one-to-one, and the corresponding lower lug group and the upper lug group are respectively provided with a fastening connection mechanism, the two lower lugs of the lower lug group are connected to the lower end of the fastening bolt through the pin shaft, the upper end of the fastening bolt passes upward through the gap between the corresponding two upper lugs and is threadedly connected to the plum blossom handwheel, and the upper end cover is fastened to the lower end cover by tightening the plum blossom handwheel.

[0009] Preferably, two Y-shaped sealing rings are provided between the rotating shaft seat and the rotating shaft, and the two Y-shaped sealing rings are respectively provided at the upper and lower ends of the rotating shaft seat.

[0010] Preferably, the upper end of the rotating shaft seat is connected to a shaft seat pressure plate via bolts, and the shaft seat pressure plate presses the Y-shaped sealing ring at the upper end onto the rotating shaft seat.

[0011] Preferably, the rotating shaft seat is fixed to the upper end cover by bolts, and the Y-shaped sealing ring at the lower end is pressed against the upper end cover.

[0012] Preferably, the observation window is fixed to the upper end cover by bolts.

[0013] Preferably, the lower end of the rotating shaft is connected to the straight groove at the upper end of the observation window mirror seat through a straight key.

[0014] Preferably, the upper end cover and the lower end cover are made of aluminum alloy.

[0015] Compared with the prior art, the utility model has achieved the following technical effects:

[0016] The utility model provides an observation window of a medium-frequency vacuum induction melting furnace, and the observation window mirror seat is arranged between the lower end cover and the upper end cover, and is rotatably connected to the lower end cover through a bearing. It is more convenient to rotate the observation window mirror seat by a hand wheel, and the upper end cover and the lower end cover on the outside of the observation window mirror seat are sealed by a first sealing ring, the observation window and the upper end cover on the outside of the second observation through hole are sealed by a second sealing ring, and the rotating shaft seat and the upper end cover are sealed by a third sealing ring, and the rotating shaft seat is sleeved on the rotating shaft and is sealed with the rotating shaft, which can ensure the sealing of the observation window of the medium-frequency vacuum induction melting furnace in the utility model, thereby ensuring the vacuum degree in the furnace and ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 Schematic diagram of the structure of the observation window of the medium frequency vacuum induction melting furnace in an embodiment of the present utility model;

[0019] Figure 2 A top view of an observation window of a medium frequency vacuum induction melting furnace in an embodiment of the present invention;

[0020] Figure 3 for Figure 2 Middle AA section view;

[0021] Figure 4 for Figure 2 Middle BB cross-section;

[0022] Figure 5 It is a structural schematic diagram of the observation window mirror base (without observation lens installed) in an embodiment of the utility model.

[0023] In the figure: 1-lower end cover, 2-upper end cover, 3-observation window mirror seat, 4-observation window, 5-first sealing ring, 6-lens mounting window, 7-observation lens, 8-first observation through hole, 9-second observation through hole, 10-transparent glass, 11-second sealing ring, 12-rotating shaft, 13-rotating shaft seat, 14-handwheel, 15-third sealing ring, 16-thrust ball bearing, 17-fastening bolt, 18-plum blossom handwheel, 19-pin, 20-upper lug group, 21-upper lug, 22-lower lug group, 23-lower lug, 24-Y-type sealing ring, 25-axle seat pressure plate, 26-slotted groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The purpose of the utility model is to provide an observation window for a medium frequency vacuum induction melting furnace to solve the problems existing in the prior art. The observation window mirror seat is easy to rotate and has good sealing performance, which can ensure the vacuum degree in the furnace and product quality.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0027] like Figure 1-Figure 5As shown, this embodiment provides an observation window of a medium-frequency vacuum induction melting furnace, comprising a lower end cover 1, an upper end cover 2, an observation window mirror seat 3, an observation window 4 and a rotating mechanism. The upper end cover 2 is arranged on the upper surface of the lower end cover 1, and the upper end cover 2 and the lower end cover 1 are fastened to each other by a fastening connection mechanism. The observation window mirror seat 3 is arranged between the lower end cover 1 and the upper end cover 2, and is rotatably connected to the lower end cover 1. The upper end cover 2 and the lower end cover 1 outside the observation window mirror seat 3 are sealed by a first sealing ring 5. A plurality of lens mounting windows 6 are provided on the observation window mirror seat 3 at intervals along the circumferential direction, and different observation lenses 7 are respectively installed in each lens mounting window 6. The lower end cover 1 is provided with a first Observation through hole 8, a second observation through hole 9 coaxial with the first observation through hole 8 is provided on the upper end cover 2, an observation window 4 corresponding to the second observation through hole 9 is installed on the upper surface of the upper end cover 2, and a transparent glass 10 is installed in the observation window 4. The observation window 4 and the upper surface of the upper end cover 2 outside the second observation through hole 9 are sealed by a second sealing ring 11. The rotating mechanism includes a rotating shaft 12, a rotating shaft seat 13 and a handwheel 14. The lower end of the rotating shaft 12 passes through the upper end cover 2 and is connected to the observation window mirror seat 3, and the upper end is connected to the handwheel 14. The rotating shaft seat 13 is sleeved on the rotating shaft 12 and is sealed with the rotating shaft 12. The rotating shaft seat 13 is fixed on the upper end cover 2 and is sealed with the upper surface of the upper end cover 2 through a third sealing ring 15.

[0028] During operation, the observation window of the medium-frequency vacuum induction melting furnace of this embodiment is secured to the furnace body via the lower end cap 1, creating a seal between the observation window and the furnace body. Rotating the observation window lens holder 3 by means of a handwheel 14 aligns different observation lenses 7 with the transparent glass 10 and the first observation aperture 8, allowing for observation of the alloy melting state within the furnace. The observation window mirror seat 3 is arranged between the lower end cover 1 and the upper end cover 2, and is rotatably connected to the lower end cover 1 through a bearing. It is more convenient to rotate the observation window mirror seat 3 by using the hand wheel 14. The upper end cover 2 and the lower end cover 1 on the outside of the observation window mirror seat 3 are sealed by the first sealing ring 5, the observation window 4 and the upper end cover 2 on the outside of the second observation through hole 9 are sealed by the second sealing ring 11, and the rotating shaft seat 13 and the upper end cover 2 are sealed by the third sealing ring 15. The rotating shaft seat 13 is sleeved on the rotating shaft 12 and is sealed with the rotating shaft 12, which can ensure the sealing of the observation window of the medium frequency vacuum induction melting furnace in this embodiment, thereby ensuring the vacuum degree in the furnace and ensuring product quality.

[0029] In this embodiment, the bottom of the observation window mirror seat 3 is rotatably connected to the lower end cover 1 through a thrust ball bearing 16, which can withstand axial loads and improve service life.

[0030] In this embodiment, the fastening connection mechanism includes a fastening bolt 17, a plum blossom handwheel 18 and a pin 19. An upper lug group 20 is provided at each end of the upper end cover 2, and the upper lug group 20 includes two upper lugs 21 arranged at intervals. A lower lug group 22 is provided at each end of the lower end cover 1, and the lower lug group 22 includes two lower lugs 23 arranged at intervals. The lower lug group 22 corresponds to the upper lug group 20 one-to-one, and the lower lug 23 corresponds to the upper lug 21 one-to-one. A fastening connection mechanism is respectively provided between the corresponding lower lug group 22 and the upper lug group 20, and the lower lugs 23 are connected to the lower end of the fastening bolt 17 by the pin 19. The upper end of the fastening bolt 17 passes upward through the gap between the corresponding two upper lugs 21 and is threadedly connected to the plum blossom handwheel 18. The upper end cover 2 is fastened to the lower end cover 1 by tightening the plum blossom handwheel 18. The upper end cover 2 and the lower end cover 1 can be fastened together by turning the plum blossom hand wheel 18, and the operation is convenient and quick.

[0031] In this embodiment, two Y-shaped sealing rings 24 are provided between the shaft seat 13 and the shaft 12. The two Y-shaped sealing rings 24 are respectively provided at the upper and lower ends of the shaft seat 13 to ensure the sealing between the shaft seat 13 and the shaft 12 and avoid air leakage.

[0032] In this embodiment, the upper end of the shaft seat 13 is connected to the shaft seat pressing plate 25 by bolts. The shaft seat pressing plate 25 presses the upper end of the Y-shaped sealing ring 24 onto the shaft seat 13 to facilitate the installation and removal of the Y-shaped sealing ring 24.

[0033] In this embodiment, the shaft seat 13 is fixed to the upper end cover 2 by bolts, and the Y-shaped sealing ring 24 at the lower end is pressed against the upper end cover 2, so as to facilitate the installation and removal of the Y-shaped sealing ring 24.

[0034] In this embodiment, the observation window 4 is fixed to the upper end cover 2 by bolts, and the installation is convenient and quick.

[0035] In this embodiment, the lower end of the rotating shaft 12 is connected to the straight groove 26 at the upper end of the observation window mirror seat 3 through a straight key, which can stably transmit torque and is durable.

[0036] In this embodiment, the upper end cover 2 and the lower end cover 1 are made of aluminum alloy, which can reduce the weight of the upper end cover 2 and the lower end cover 1.

[0037] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. An observation window for a medium frequency vacuum induction melting furnace, characterized by: The invention comprises a lower end cover, an upper end cover, an observation window mirror seat, an observation window and a rotating mechanism, wherein the upper end cover is arranged on the upper surface of the lower end cover, the upper end cover and the lower end cover are fastened to each other by a fastening connection mechanism, the observation window mirror seat is arranged between the lower end cover and the upper end cover, and is rotatably connected to the lower end cover through a bearing, the upper end cover and the lower end cover on the outer side of the observation window mirror seat are sealed by a first sealing ring, a plurality of lens mounting windows are provided on the observation window mirror seat at intervals along the circumferential direction, different observation lenses are respectively installed in each of the lens mounting windows, the lower end cover is provided with a first observation through hole that can be aligned with each of the observation lenses, the The upper end cover is provided with a second observation through hole coaxial with the first observation through hole, and the upper surface of the upper end cover is installed with the observation window corresponding to the second observation through hole, and transparent glass is installed in the observation window, and the observation window and the upper surface of the upper end cover outside the second observation through hole are sealed by a second sealing ring. The rotating mechanism includes a rotating shaft, a rotating shaft seat and a handwheel, the lower end of the rotating shaft passes through the upper end cover and is connected to the observation window mirror seat, and the upper end is connected to the handwheel, the rotating shaft seat is sleeved on the rotating shaft and is sealed to the rotating shaft, the rotating shaft seat is fixed on the upper end cover, and is sealed to the upper surface of the upper end cover by a third sealing ring.

2. The observation window of the medium frequency vacuum induction melting furnace according to claim 1, characterized in that: The bottom of the observation window mirror seat is rotatably connected to the lower end cover through a thrust ball bearing.

3. The observation window of the medium frequency vacuum induction melting furnace according to claim 1, characterized in that: The two ends of the upper and lower ends of the lower jaws are connected with each other through the pin shaft, and the upper and lower ends of the lower jaws are connected with each other through the pin shaft. The two ends of the lower jaw are connected with the pin shaft, and the upper and lower ends of the lower jaws are connected with each other through the pin shaft. The upper and lower ends of the lower jaws are connected with each other through the pin shaft.

4. The observation window of the medium frequency vacuum induction melting furnace according to claim 1, characterized in that: Two Y-shaped sealing rings are provided between the rotating shaft seat and the rotating shaft, and the two Y-shaped sealing rings are respectively provided at the upper and lower ends of the rotating shaft seat.

5. The observation window of the medium frequency vacuum induction melting furnace according to claim 4, characterized in that: The upper end of the rotating shaft seat is connected to a shaft seat pressing plate by bolts, and the shaft seat pressing plate presses the Y-shaped sealing ring at the upper end onto the rotating shaft seat.

6. The observation window of the medium frequency vacuum induction melting furnace according to claim 4, characterized in that: The rotating shaft seat is fixed to the upper end cover by bolts, and the Y-shaped sealing ring at the lower end is pressed tightly against the upper end cover.

7. The observation window of the medium frequency vacuum induction melting furnace according to claim 1, characterized in that: The observation window is fixed to the upper end cover by bolts.

8. The observation window of the medium frequency vacuum induction melting furnace according to claim 1, characterized in that: The lower end of the rotating shaft is matched and connected with the straight groove at the upper end of the observation window mirror seat through a straight key.

9. The observation window of the medium frequency vacuum induction melting furnace according to claim 1, characterized in that: The upper end cover and the lower end cover are made of aluminum alloy.

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