Connector switching device for vacuum refining furnace

Abstract

The utility model relates to a connector switching device for a vacuum refining furnace, and belongs to the technical field of metallurgy. Comprising a supporting frame, a rotary lifting mechanism and a U-shaped elbow, the rotary lifting mechanism comprises a hydraulic unit and a rotating unit, the U-shaped elbow is hung upside down on the supporting frame in a lifting mode through the hydraulic unit, and the rotating unit is arranged on the supporting frame to control the U-shaped elbow to rotate; the rotary unit comprises a rotary bearing, a motor and a position sensor; when the pivotal bearing is arranged at the bottom of the supporting frame, the supporting frame is controlled to rotate to enable the U-shaped elbow to rotate to switch the interface, and when the pivotal bearing is arranged between the supporting frame and the hydraulic unit, the U-shaped elbow is directly controlled to rotate. The rotary lifting mechanism is arranged to control lifting and rotation of the U-shaped elbow at the same time, switching of interfaces at multiple stations can be achieved only through one interface switching device, operation is convenient and fast, the equipment cost is reduced, and the occupied space of a plant is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgy and relates to an interface switching device for a vacuum refining furnace. Background Art

[0002] In a traditional two-station VOD / VD furnace (vacuum refining furnace), usually two vacuum tanks, one set of vacuum pump system, and one set of 180-degree U-shaped elbows that can linearly move and lift are correspondingly arranged to achieve vacuum switching processing for two stations, as Figure 5 shown. With the pursuit of shortening the smelting cycle and improving the smelting efficiency, the two-station vacuum refining furnace can no longer meet the requirements. When adopting a multi-station form with three or more vacuum tanks, if the traditional vacuum switching method continues to be used, at least two sets of vacuum pump systems and at least two sets of vacuum switching devices must be equipped, which will inevitably increase the equipment cost and the occupied space of the workshop.

[0003] Therefore, there is an urgent need to propose a method that can reduce costs, improve smelting efficiency, shorten the smelting cycle, and reduce the occupied area of the workshop to solve the above problems and meet the development needs of vacuum refining. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide an interface switching device for a vacuum refining furnace, aiming to reduce the equipment cost, effectively realize multi-station vacuum switching, meet the functional requirements, and reduce the floor area of the switching device in the workshop.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An interface switching device for a vacuum refining furnace, comprising a support frame, a rotary lifting mechanism, and a U-shaped elbow. The rotary lifting mechanism includes a hydraulic unit and a slewing unit. The U-shaped elbow is suspended upside down on the support frame through the hydraulic unit in a liftable manner, and the slewing unit is arranged on the support frame to control the rotation of the U-shaped elbow.

[0007] One end of the U-shaped elbow is connected to the interface of the vacuum pump system below, and the other end is connected to the interface of the air extraction pipeline of the vacuum tank below. When the U-shaped elbow rotates, it rotates horizontally with the interface end of the vacuum pump system as the center of the circle and stops when the other end aligns with the interface of the air extraction pipeline of the next vacuum tank.

[0008] Optionally, the slewing unit is arranged at the bottom of the support frame, and the rotation of the U-shaped elbow is realized by driving the support frame to rotate.

[0009] Optionally, the slewing unit includes a slewing bearing arranged at the bottom of the support frame and a motor connected to the slewing bearing and driving the slewing bearing to rotate.

[0010] Optionally, the slewing unit is arranged between the support frame and the hydraulic unit, and drives the U-shaped elbow and the hydraulic unit to rotate together.

[0011] Optionally, the slewing unit includes a slewing bearing arranged between the support frame and the hydraulic unit, and a motor connected to the slewing bearing and driving the slewing bearing to rotate.

[0012] Optionally, the slewing unit further includes a position sensor electrically connected to the motor and the slewing bearing respectively.

[0013] Optionally, the position sensor is an encoder.

[0014] Optionally, the support frame includes a vertical section and a cantilever section, and the vertical section and the cantilever section are connected to form an inverted L-shaped structure; the slewing unit is arranged at the bottom of the vertical section, and the hydraulic unit is arranged on the cantilever section; the cantilever section is driven by the slewing unit to rotate around the vertical section.

[0015] Optionally, the hydraulic unit is a hydraulic cylinder.

[0016] Optionally, the U-shaped elbow is a 180° connecting elbow.

[0017] The beneficial effects of the present utility model are as follows:

[0018] By setting the rotary lifting mechanism, the present utility model realizes both rotation and lifting during the interface switching of the vacuum refining furnace. Through the 360° rotation of the U-shaped elbow to switch the interface, only one set of interface switching device is required to meet the interface switching between a set of vacuum pump systems and the vacuum refining furnaces at multiple stations. While reducing the equipment cost, it effectively realizes multi-station vacuum switching, meets the functional requirements, and reduces the floor area occupied by the switching device in the workshop.

[0019] Other advantages, objectives and features of the present utility model will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present utility model. The objectives and other advantages of the present utility model can be realized and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be described in preferred detail below in conjunction with the drawings, wherein:

[0021] Figure 1 is the front view of the interface switching device according to Embodiment 1 of the present utility model;

[0022] Figure 2 Top view of the interface switching device according to the first embodiment of the present utility model;

[0023] Figure 3 Schematic diagram of the slewing unit in the first embodiment of the present utility model;

[0024] Figure 4 Front view of the interface switching device according to the second embodiment of the present utility model;

[0025] Figure 5 Schematic diagram of a conventional interface switching device for a vacuum refining furnace.

[0026] Reference numerals:

[0027] 1 Support frame, 11 Vertical section, 12 Cantilever section, 2 Rotary lifting mechanism, 21 Hydraulic unit, 22 Slewing unit, 221 Slewing bearing, 222 Motor, 223 Position sensor, 3 U-shaped elbow, 4 Vacuum pump system interface, 5 Vacuum tank evacuation pipeline interface. Specific implementation manners

[0028] The following uses specific specific examples to illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present utility model in a schematic manner. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0029] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and cannot be understood as a limitation to the present utility model; in order to better illustrate the embodiments of the present utility model, some components in the drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0030] In the attached drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the attached drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the attached drawings are only used for exemplary illustration and should not be construed as a limitation of the present utility model. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] Please refer to Figures 1 to 4 , which is an interface switching device for a vacuum refining furnace, including a support frame 1, a rotary lifting mechanism 2, and a U-shaped elbow 3. The rotary lifting mechanism 2 includes a hydraulic unit 21 and a slewing unit 22. The U-shaped elbow 3 is suspended upside down on the support frame 1 in a liftable manner through the hydraulic unit 21. The slewing unit 22 is arranged on the support frame 1 to control the U-shaped elbow 3 to rotate to multiple different processing stations to complete the vacuum switching process. The lifting of the U-shaped elbow 3 is realized through the hydraulic unit 21 to ensure that it does not contact and collide with other equipment during rotation. In some embodiments of the present utility model, the U-shaped elbow 3 is a 180° connecting elbow, and the hydraulic unit 21 is a hydraulic cylinder.

[0032] One end of the U-shaped elbow 3 is connected to the vacuum pump system interface 4 below, and the other end is connected to the vacuum tank evacuation pipeline interface 5 below; when the U-shaped elbow 3 rotates, it rotates horizontally with the vacuum pump system interface end as the center of the circle and stops when the other end aligns with the next vacuum tank evacuation pipeline interface 5.

[0033] The slewing unit 22 can be arranged at the bottom of the support frame 1 or between the support frame 1 and the hydraulic unit 21. When the slewing unit 22 is arranged at the bottom of the support frame 1, the support frame 1 is driven to rotate through the slewing unit 22, thereby realizing the rotation of the U-shaped elbow 3 around the support frame 1; when the slewing unit 22 is arranged between the support frame 1 and the hydraulic unit 21, it directly drives the U-shaped elbow 3 and the hydraulic unit 21 to rotate together around its axis.

[0034] The slewing unit 22 includes a slewing bearing 221, and a motor 222 connected to the slewing bearing 221 and driving the slewing bearing 221 to rotate. It also includes a position sensor 223 electrically connected to the motor 222 and the slewing bearing 221 respectively. The position sensor 223 accurately locates the rotation position and rotational position of the support frame 1, improving the accuracy of the alignment connection between the U-shaped elbow 3 and the interface after the interface is switched. In some embodiments of the present utility model, the position sensor 223 is an encoder. The slewing unit 22 uses the motor 222 as the driving source and is also equipped with a reducer and gears (not shown in the drawings). The reducer facilitates the control of the rotation speed, and the U-shaped elbow 3 and the support frame 1 are assisted to achieve 360° rotation through gear transmission. A traveling mechanism (not shown in the drawings) is provided at the bottom of the support frame 1, and the support frame 1 is moved on the ground through the traveling mechanism, which facilitates driving the support frame 1 and the U-shaped elbow 3 to move between various interfaces. In cooperation with the rotary lifting mechanism 2, the interface can be switched more flexibly; when it moves to the alignment of the U-shaped elbow 3 and the corresponding interface, it is fixed and locked through a locking mechanism (not shown in the drawings) provided at the bottom of the support frame 1 to prevent the support frame from moving on the ground and avoid misalignment between the U-shaped elbow 3 and the interface.

[0035] The support frame 1 includes a vertical section 11 and a cantilever section 12. The vertical section 11 and the cantilever section 12 are connected to form an inverted L-shaped structure; the slewing unit 22 is arranged at the bottom of the vertical section 11 of the support frame 1, and the hydraulic unit 21 is arranged on the cantilever section 12; the cantilever section 12 is driven to rotate around the vertical section 11 by the slewing unit 22.

[0036] Embodiment 1:

[0037] When the slewing bearing 221 of the slewing unit 22 is arranged at the bottom of the vertical section 11 of the support frame 1, the U-shaped elbow 3 is arranged on the cantilever section 12 through the hydraulic unit 21; the cantilever section 12 is driven to rotate around the vertical section 11 by the slewing bearing 221, and then the U-shaped elbow 3 is driven to rotate around the vertical section 11.

[0038] Embodiment 2:

[0039] The slewing bearing 221 of the slewing unit 22 is arranged between the support frame 1 and the hydraulic unit 21, and the U-shaped elbow 3 and the hydraulic unit 21 are directly driven to rotate around their axes by the slewing bearing 221. In cooperation with the traveling mechanism at the bottom of the support frame 1, multi-station conversion at any position can be achieved.

[0040] The utility model realizes the rotation and lifting during the interface switching of the vacuum refining furnace by setting the rotation and lifting mechanism 2. The interface is switched by the 360° rotation of the U-shaped elbow 3. Only one set of interface switching device is needed to meet the interface switching between a set of vacuum pump systems and the vacuum refining furnaces at multiple workstations. While reducing the equipment cost, it effectively realizes the multi-station vacuum switching, meets the functional requirements, and reduces the floor area occupied by the switching device in the workshop.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the present technical solution, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An interface switching device for a vacuum refining furnace, characterized in that: It includes a support frame (1), a rotary lifting mechanism (2) and a U-shaped elbow (3). The rotary lifting mechanism (2) includes a hydraulic unit (21) and a slewing unit (22). The U-shaped elbow (3) is suspended upside down on the support frame (1) in a liftable manner through the hydraulic unit (21). The slewing unit (22) is arranged on the support frame (1) to control the rotation of the U-shaped elbow (3).

2. The interface switching device for a vacuum refining furnace according to claim 1, characterized in that: The slewing unit (22) is arranged at the bottom of the support frame (1). By driving the rotation of the support frame (1), the rotation of the U-shaped elbow (3) is realized.

3. The interface switching device for a vacuum refining furnace according to claim 2, characterized in that: The slewing unit (22) includes a slewing bearing (221) arranged at the bottom of the support frame (1), and a motor (222) connected to the slewing bearing (221) and driving the slewing bearing (221) to rotate.

4. The interface switching device for a vacuum refining furnace according to claim 1, characterized in that: The slewing unit (22) is arranged between the support frame (1) and the hydraulic unit (21), and drives the U-shaped elbow (3) and the hydraulic unit (21) to rotate together.

5. The interface switching device for a vacuum refining furnace according to claim 4, characterized in that: The slewing unit (22) includes a slewing bearing (221) arranged between the support frame (1) and the hydraulic unit (21), and a motor (222) connected to the slewing bearing (221) and driving the slewing bearing (221) to rotate.

6. The interface switching device for a vacuum refining furnace according to any one of claims 3 and 5, characterized in that: The slewing unit (22) further includes a position sensor (223) electrically connected to the motor (222) and the slewing bearing (221) respectively.

7. The interface switching device for a vacuum refining furnace according to claim 6, characterized in that: The position sensor (223) is an encoder.

8. The interface switching device for a vacuum refining furnace according to claim 1, characterized in that: The support frame (1) includes a vertical section (11) and a cantilever section (12). The vertical section (11) and the cantilever section (12) are connected to form an inverted L-shaped structure. The slewing unit (22) is arranged at the bottom of the vertical section (11), and the hydraulic unit (21) is arranged on the cantilever section (12). The cantilever section (12) is driven by the slewing unit (22) to rotate around the vertical section (11).

9. The interface switching device for a vacuum refining furnace according to claim 1, characterized in that: The hydraulic unit (21) is a hydraulic cylinder.

10. The interface switching device for a vacuum refining furnace according to claim 1, characterized in that: The U-shaped elbow (3) is a 180° connecting elbow.

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