Foundation-free three-station molten steel casting ladle baking device

Abstract

The utility model belongs to the technical field of die casting technical equipment, and particularly relates to a foundation-free three-station molten steel casting ladle baking device which comprises a large chassis, a lifting mechanism, a rotating mechanism and a baking mechanism. The lifting mechanism is arranged on the large steel chassis without the civil foundation; the rotating mechanism is mounted on the lifting mechanism; the baking mechanism is mounted on the rotating mechanism; one end of the baking mechanism is a burner with a ladle cover, and the other end of the baking mechanism is a fan and a counterweight; an oil / gas pipeline is arranged on the baking mechanism, one end of the oil / gas pipeline is connected with the burner, and the other end of the oil / gas pipeline is connected with an oil source / gas source pipeline. The foundation-free three-station molten steel casting ladle baking device can ascend, descend and rotate autonomously, can work at multiple stations, meets baking of casting ladles of various specifications and models, and is high in efficiency, fuel-saving, flexible in mounting position and high in site adaptability.

Description

Technical Field

[0001] The utility model relates to the field of die casting technology equipment, in particular to a foundation-free three-station steel liquid casting ladle baking device. Background Art

[0002] The rated capacity of the steel ladles and iron ladles used to hold high-temperature molten metal in metallurgical casting workshops ranges from 0.5t to 20t, with a total of 13 specifications; ladles of the same specification are divided into multiple models such as slender type and short and thick type.

[0003] If a conventional tilting roaster is used, one baking device is configured for one ladle of one specification and model, and the workstation is single, resulting in a large number of baking devices to be installed, large investment, and high operation and maintenance costs; specifically, the traditional tilting roaster is mainly composed of a baking mechanism, a rotating shaft, a roaster fixing bracket, and a tilting hydraulic cylinder. The baking mechanism is mainly composed of a fireproof cover (also called a ladle cover) and a burner (also called a burner). The baking mechanism is connected to the gas source through a hard pipe in the high-temperature combustion area. The baking mechanism is connected to the hydraulic cylinder through a rotating shaft, and the rotating shaft is driven by the hydraulic cylinder to tilt up and down about 90 degrees; the roaster bracket of the tilting roaster is fixed to the concrete foundation by embedded bolts, the position of the roaster is completely fixed, and the working height and horizontal position of the roasting mechanism are completely fixed. One roaster can only bake steel ladles or iron ladles of the same height specification. One steel ladle of one height size needs to be installed with one roaster. According to this, the workshop needs to purchase and install dozens of roasters; and the rotating shaft of the tilting roaster uses bearings for tilting, and bearing lubrication and maintenance are difficult.

[0004] If a cantilever type baking machine is used, the workstation is single, the operation and maintenance are more difficult, and the cost is higher. Specifically, the cantilever type baking machine is mainly composed of a cantilever crane and a baking mechanism. The baking mechanism is mainly composed of a fireproof cover and a burner. The baking mechanism is connected to the gas source through a hose. The baking mechanism is connected to the cantilever crane through a chain, and is lifted and rotated by the lifting and rotation of the cantilever crane; the cantilever crane is fixed to the concrete foundation by embedded bolts and is arranged in the high-temperature gas area, so an explosion-proof crane must be selected and resistant to high temperatures; during the baking process, the motor, wire rope and detection components are easily damaged by the high-temperature flame and smoke, and maintenance is relatively frequent and difficult. The baking mechanism is connected to the gas source through a hose, and the hose is arranged in the area covered by the high-temperature flame, which is easy to burn and leak, posing a safety hazard; the baking mechanism is connected to the cantilever crane through a chain, and is lifted and rotated by the lifting and rotation of the cantilever crane. The connecting hose of the baking mechanism is frequently lifted and rotated and is bent, which is easy to be damaged, resulting in a short life, frequent replacement, and high operation and maintenance costs; the baking mechanism is connected to the hook of the cantilever crane through a hanging rope and a hanging plate, and lifting and rotating are prone to shaking, affecting the accuracy of parking and working positions, and often repeated alignment, while causing great wear on the wire rope and chain. Utility Model Content

[0005] The purpose of the utility model is to solve the main problems that the traditional baking machine in the prior art cannot be used in multiple stations, thereby increasing the number of equipment and raising the cost, and the cantilever baking machine lifts the burner by continuous series connection of wire ropes, hooks, hanging plates and hanging ropes, which has poor stability, the burner is connected to the gas source through a hose, the hose is arranged in the high-temperature flame coverage area, and the hose is frequently lifted and rotated and bent, which is easy to be damaged and leaked, and there is a safety hazard. The utility model proposes a steel liquid casting ladle baking device with three-station use without foundation and stable lifting and rotating of the baking machine.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A foundation-free three-station steel molten ladle baking device, comprising a large chassis, a lifting mechanism, a rotating mechanism, and a baking mechanism;

[0008] The lifting mechanism is set on a large chassis, which is made of steel without a civil engineering foundation and is easy to install;

[0009] The rotating mechanism is installed on the lifting mechanism;

[0010] The baking mechanism is installed on the rotating mechanism, which has good stability;

[0011] The baking mechanism has a burner with a cover on one end and a fan and a counterweight on the other end;

[0012] The baking mechanism is provided with an oil / gas pipeline, one end of which is connected to the burner, and the other end of which is connected to the oil source / gas source pipeline.

[0013] As a further preferred solution, the baking device also includes an electronic control system, which stably and accurately controls the hydraulic pump motor, hydraulic solenoid reversing valve, fan motor, oil / gas quick shut-off valve, automatic ignition, flameout detection, oil / gas ratio adjustment, oil / gas flow display, baking temperature detection, and fault alarm.

[0014] As a further preferred solution, a column is provided on the large chassis, the lifting mechanism is arranged in the column, the lifting mechanism is a hydraulic lifting mechanism, and the top of the lifting and retracting rod of the hydraulic lifting mechanism is a rotating mechanism.

[0015] As a further preferred solution, the oil / gas pipeline is made of hard steel pipe.

[0016] As a further preferred solution, the rotating mechanism adopts thrust joint self-lubricating bearings, which not only realizes stable support and smooth lifting of the baking mechanism, but also achieves a clever balance among the bag cover, baking mechanism, fan and counterweight. The baking mechanism can rotate easily and smoothly with just a gentle push by hand, and the bearings do not require lubrication.

[0017] The utility model has the following advantages:

[0018] 1. One baking device can be used to bake ladles of various specifications and models. Only three baking devices are required for 34 ladles of various specifications and models, saving investment of about RMB 8 million.

[0019] 2. A baking device with three working positions can bake quickly with high efficiency and save fuel. The reasons are: 1) A baking device can meet the baking needs of ladles of various specifications and models, with a reduced number of baking devices and positions, which reduces waste and loss; 2) A baking device with three working positions has high baking efficiency and saves fuel; 3) The structure is compact and the pipelines are short. The oil and gas pipelines in the high-temperature zone are all hard steel pipes that are not easily damaged and leaked; 4) The oil and gas use process is precisely controlled, the oil and gas consumption is low, and the energy cost is reduced by 110,000 yuan / year.

[0020] 3. The number of baking devices is reduced, and the cost of spare parts and maintenance is reduced by 20,000 yuan per year.

[0021] 4. The entire baking device has no civil engineering foundation. During production, the entire baking device is fixed on a large chassis through columns. It has flexible installation positions, strong adaptability to the site, and is installation-free. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a foundation-free three-station steel molten ladle baking device proposed by the utility model;

[0023] Figure 2 This is a plan layout and station schematic diagram of a foundation-free three-station steel molten ladle baking device proposed by the utility model;

[0024] In the figure: 1. large chassis, 2. lifting mechanism, 3. rotating mechanism, 4. baking mechanism, 5. bag cover, 6. fan, 7. counterweight, 8. oil / gas pipeline, 9. electric control system, 10. burner, 11. hydraulic station, 12 rotating joint, 13 telescopic sleeve. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] A foundation-free three-station steel molten ladle baking device, comprising a large chassis 1, a lifting mechanism 2, a rotating mechanism 3, a baking mechanism 4, a ladle cover 5, a fan 6, a counterweight 7, an oil / gas pipeline 8, an electric control system 9, a burner 10, a hydraulic station 11, a rotating joint 12, and a telescopic sleeve 13;

[0027] The lifting mechanism 2 is arranged on the large chassis 1. The large chassis 1 is a large steel chassis without a civil engineering foundation. The entire baking device is fixed on the large chassis by means of columns. The installation position is flexible, the adaptability to the site is strong, and installation is free.

[0028] The hydraulic station 11 is connected to the hydraulic cylinder of the lifting mechanism 2 and its operation is controlled by the electronic control system 9 .

[0029] The rotating mechanism 3 is installed between the lifting mechanism 2 and the baking mechanism 4. The rotating bearing of the rotating mechanism 3 adopts a thrust joint self-lubricating bearing which is easy to maintain. The rotating mechanism adopts a special structural design. The baking mechanism rotates easily and smoothly with only a slight manual push.

[0030] One end of the baking mechanism 4 is a burner 10 with a ladle cover 5, and the other end is a fan 6 and a counterweight 7; the fan 6 supports combustion by blowing air, and the combustion-supporting air rotates around the inner periphery of the ladle after being sprayed out, forming a large-area three-dimensional flame that fills the ladle, thereby achieving uniform heating of the entire interior of the ladle.

[0031] The baking mechanism 4 is provided with an oil / gas pipeline 8 , one end of which is connected to the burner, and the other end of which is connected to the oil source / gas source pipeline.

[0032] The oil / gas pipeline 8 includes two sections, one end of which is fixed on the baking mechanism 4, and the other end is fixed on the large chassis 1, and is used to connect the oil source / gas source pipeline. A rotating joint 12 and a telescopic sleeve 13 are provided at the connection between the two sections of the oil / gas pipeline 8, so that the baking mechanism 4 can follow the baking mechanism 4 to make telescopic and rotating movements when it is lifted or rotated.

[0033] The baking device further comprises an electric control system 9 .

[0034] A column is provided on the large chassis 1, and the lifting mechanism 2 is arranged in the column. The lifting mechanism 2 is a hydraulic lifting mechanism. The top of the lifting and retracting rod of the hydraulic lifting mechanism is a rotating mechanism 3. The baking mechanism is lifted vertically by a hydraulic cylinder installed in the middle of the column. The lifting is smooth and without shaking, and the stopping is smooth and high in precision.

[0035] The oil / gas pipeline 8 of the baking mechanism 4 is in a high temperature area and is made of hard steel pipes.

[0036] Operation mode:

[0037] (1) The baking mechanism 4 and its attached cover 5, oil / gas pipeline 8, burner 10, etc. are lifted to the highest position by the lifting mechanism 2;

[0038] (2) The baking mechanism 4 and its attached cover 5, oil / gas pipeline 8, burner 10, etc. are rotated away from the A station by the rotating mechanism 3;

[0039] (3) The molten steel ladle or molten iron ladle with refractory material to be baked is hoisted to station A by the workshop crane;

[0040] (4) Adjust the hanging bracket of the molten steel ladle or the molten iron ladle from a vertical state to an inclined state or a horizontal state according to the actual situation of the ladle;

[0041] (5) Rotate the baking mechanism 4 and its attached cover 5, oil / gas pipeline 8, burner 10, etc. to the A station;

[0042] (6) Lower the baking mechanism 4 and its attached ladle cover 5, oil / gas pipeline 8, burner 10, etc. to the required baking height according to the ladle specifications;

[0043] (7) Pass oil (or gas) through burner 10;

[0044] (8) Ignition;

[0045] (9) Bake to the temperature required by the process. At the same time, during the baking of station A, the ladles to be baked at stations B and C are hoisted and prepared in place;

[0046] (10) Lift the baking mechanism 4 and its attached cover 5, oil / gas pipeline 8, burner 10, etc. to the highest position;

[0047] (11) Rotate the baking mechanism 4 and its attached cover 5, oil / gas pipeline 8, burner 10, etc. to the B station (or C station), and perform baking according to the operation method of the A station.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A foundation-free three-station steel molten ladle baking device, characterized in that: It comprises a large base plate (1), a lifting mechanism (2), a rotating mechanism (3), and a baking mechanism (4); The lifting mechanism (2) is arranged on the large chassis (1); The rotating mechanism (3) is installed on the lifting mechanism (2); The baking mechanism (4) is installed on the rotating mechanism (3); The baking mechanism (4) has a burner (10) with a cover (5) at one end and a fan (6) and a counterweight (7) at the other end; The baking mechanism (4) is provided with an oil / gas pipeline (8), one end of the oil / gas pipeline (8) is connected to the burner (10), and the other end is connected to the oil source / gas source pipeline.

2. The three-station foundationless steel molten ladle baking device according to claim 1, characterized in that: The baking device further comprises an electric control system (9), wherein signals from the electric control system (9) control the lifting mechanism (2), the fan (6), the oil source / gas source pipeline, and the burner (10).

3. The three-station foundationless steel molten ladle baking device according to claim 1, characterized in that: A column is provided on the large chassis (1), and the lifting mechanism (2) is arranged in the column. The lifting mechanism (2) is a hydraulic lifting mechanism, and the top of the lifting and retracting rod of the hydraulic lifting mechanism is a rotating mechanism (3).

4. The three-station foundationless steel molten ladle baking device according to claim 1, characterized in that: The oil / gas pipeline (8) is made of hard steel pipe.

5. The three-station foundationless steel molten ladle baking device according to claim 1, characterized in that: The rotating mechanism (3) is a thrust joint self-lubricating bearing.

6. The three-station foundationless steel molten ladle baking device according to claim 1, characterized in that: The large chassis (1) is made of steel without a civil engineering foundation.

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