Steel rolling heating furnace tapping machine tapping arm inlet and outlet sealing system

Abstract

The utility model discloses a steel rolling heating furnace tapping machine tapping arm inlet and outlet sealing system. Comprising a furnace body, more than one tapping machine is arranged on one side of the furnace body side by side, and tapping arm inlets and outlets corresponding to tapping arms of the tapping machines are formed in the furnace body; a steel tapping arm door is arranged corresponding to the steel tapping arm inlet and outlet; according to the tapping arm door, a cooling frame is arranged on the portion, at the tapping arm inlet and outlet, of the furnace body; a flame blocking door is arranged corresponding to the cooling frame; a lifting mechanism used for driving the flame blocking door to ascend and descend is arranged on the outer side of the furnace body and corresponds to the flame blocking door. The sealing system is arranged at the inlet and outlet of the tapping arm of the tapping machine of the heating furnace, so that the problem of fire at the inlet and outlet of the tapping arm of the tapping machine is solved. The working environment is improved, and the problems that nearby equipment is damaged by high temperature, the service life is shortened and the failure rate is high are solved; and the loss of fuel is reduced, and the utilization efficiency of energy is improved. Therefore, the maintenance cost and the operation cost of an enterprise are further reduced.

Description

Technical Field

[0001] The utility model provides an inlet and outlet sealing system for a steel tapping arm of a steel rolling heating furnace tapping machine. Background Art

[0002] The tapping machine is located directly in front of the reheating furnace's tapping side. When the billet, heated in the reheating furnace, reaches the cantilever roller table, the tapping machine receives a tapping signal and extends its tapping arm. The tapping arm enters the furnace from outside through the tapping arm inlet and outlet, lifts the billet, and places it on the cantilever roller table. Once the tapping arm completes its lifting task, it returns to the furnace, awaiting the next tapping cycle. The billet is then transported via the cantilever roller table to the rolling mill outside the furnace for rolling. Because the furnace's tapping side is under positive pressure (due to process requirements), flames may erupt from the tapping arm inlet and outlet during this waiting period. This often leads to the following problems during production: 1) Increased heat loss: Flames represent unnecessary heat loss from the reheating furnace, reducing energy efficiency and increasing operating costs. 2) Environmental pollution: Flames can cause harmful gases such as SO2 to enter the workshop, polluting the work environment and posing a health risk to workers. 3) Thermal deformation of the end steel structure. 4) Equipment damage or increased failure rates, which not only shortens equipment life but also impacts production continuity and safety.

[0003] In actual production, the inlet and outlet of the steel tapping machine's tapping arm are generally open without sealing or simply treated with fire baffles. This method has the following disadvantages:

[0004] 1. The open type is adopted, and the flame emerges from the inlet and outlet of the steel tapping arm. The ambient temperature is high and the working environment is harsh. The steel structure at the end of the steel tapping side is deformed due to heat, the accident rate of the end equipment increases, and the service life is shortened.

[0005] 2. A simple sealing device is often installed, but its service life is very short. After the sealing device is damaged, the above problems will occur again. Moreover, due to the fire here, the furnace needs to be shut down to deal with it, affecting production. Utility Model Content

[0006] In order to solve the above problems, the utility model provides an inlet and outlet sealing system for a steel tapping arm of a steel rolling heating furnace tapping machine.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a sealing system for the inlet and outlet of the steel tapping arm of the steel tapping machine of the steel rolling heating furnace, comprising a furnace body, one or more steel tapping machines arranged side by side on one side of the furnace body, steel tapping arm inlets and outlets being arranged on the furnace body corresponding to the steel tapping arms of the steel tapping machines; steel tapping arm doors being arranged corresponding to the steel tapping arm inlets and outlets; wherein,

[0008] The steel-outlet arm door includes: a cooling frame provided on the furnace body at the inlet and outlet of the steel-outlet arm; a flame-blocking door provided corresponding to the cooling frame; and a lifting mechanism for driving the flame-blocking door to rise and fall provided on the outer side of the furnace body corresponding to the flame-blocking door.

[0009] Furthermore, the cooling frame includes a hollow frame body, and the hollow frame body is provided with a water inlet and a water outlet communicated with the hollow part of the frame body.

[0010] Furthermore, an inner lining is provided on the inner side of the flame baffle, and the inner lining is composed of a high-temperature fiber blanket layer located on the outer side and a heavy castable layer located on the inner side of the high-temperature fiber blanket layer.

[0011] Furthermore, an inner lining is provided on the inner side of the flame baffle, and the inner lining is composed of a high-temperature fiber blanket layer located on the outer side and a heavy castable layer located on the inner side of the high-temperature fiber blanket layer.

[0012] Furthermore, a counterweight system is provided on the furnace body corresponding to the steel tapping arm door.

[0013] Furthermore, the counterweight system includes: a sprocket is provided on the furnace body corresponding to the steel tapping arm door; a chain is provided on the sprocket, one end of the chain is connected to the flame barrier door; and the other end of the chain is connected to a counterweight.

[0014] Furthermore, slide grooves are provided on both sides of the cooling frame corresponding to the flame barrier door, and the flame barrier door is provided in the slide grooves.

[0015] Furthermore, an entry and exit window is provided on the steel tapping arm door corresponding to the steel tapping arm.

[0016] Furthermore, a roller is provided on the steel-discharging arm door corresponding to the entry and exit window, and the lower edge of the roller is lower than the upper edge of the entry and exit window.

[0017] The utility model has the following advantages:

[0018] 1) Add a cooling water pipeline as a cooling source for the water-cooled frame. Install a temperature detector on the return water pipeline. During normal production, the temperature at the inlet and outlet of the steel-making arm is high, creating a harsh operating environment. Install a water-cooled frame and flow cooling water through it to protect it. The temperature detector on the return water pipeline measures the return water temperature (return water temperature does not exceed 50°C), and adjusts the valve on the inlet water pipeline to protect the water-cooled frame and conserve water.

[0019] 2) The tapping arm door of the tapping machine consists of a lifting mechanism, a flame damper, and a water-cooled frame. When the tapping arm receives the tapping signal, the furnace door lifting mechanism begins its upward movement, lifting the flame damper. Because the tapping arm's movement is interlocked with the furnace door's lifting, the lifting mechanism begins simultaneously, pulling the flame damper up. The lifting is completed before the tapping arm reaches the tapping arm entrance. The tapping arm enters the furnace, lifts the billet, and places it on the cantilevered roller conveyor. Upon completing the lifting task, the tapping arm returns to the outside of the furnace, and the flame damper descends to its original position to prevent flames from escaping. The height of the flame damper is controlled by a proximity switch.

[0020] 3) This system is designed based on a tapping machine with four tapping arms, but it is not only applicable to four tapping arms, but also to more than four or less than four.

[0021] A sealing system installed at the inlet and outlet of the heating furnace's tapping machine's tapping arm solves the problem of fire at the inlet and outlet. This not only improves the working environment, preventing nearby equipment from being damaged by high temperatures, which would shorten its service life and increase its failure rate, but also reduces fuel loss and improves energy efficiency, further reducing the company's maintenance and operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the heating furnace and the steel tapping machine in the utility model.

[0023] Figure 2 for Figure 1 Schematic diagram of the structure of the inlet and outlet of the middle steel tapping arm.

[0024] Figure 3 for Figure 2 side view.

[0025] Figure 4 This is a schematic diagram of the structure of the flame baffle.

[0026] Figure 5 for Figure 4 side view.

[0027] Figure 6 This is a schematic diagram of the structure of the flame baffle.

[0028] Figure 7 This is a structural diagram of the steel tapping arm entering the entry and exit window. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0032] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0033] like Figure 1 As shown, the utility model includes a furnace body 1, on one side of which a cantilever roller 2 and a plurality of steel tapping machines 3 are arranged side by side, and a steel tapping arm inlet and outlet 5 is provided on the furnace body 1 corresponding to the steel tapping arm 4 of the steel tapping machine 3; a steel tapping arm door 6 is provided corresponding to the steel tapping arm inlet and outlet; wherein,

[0034] The tapping arm door includes a cooling frame 61 mounted on the furnace body at the tapping arm entrance and exit. The cooling frame comprises a hollow body with a water inlet 611 and a water outlet 612 connected to the hollow portion of the body. The water inlet and outlet can be adjusted based on the temperature detected by a temperature detection device on the water outlet pipe.

[0035] A flame baffle 62 is provided corresponding to the cooling frame; an inner lining is provided on the inner side of the flame baffle, and the inner lining is composed of a high-temperature fiber blanket layer 621 located on the outer side and a heavy casting material layer 622 located on the inner side of the high-temperature fiber blanket layer.

[0036] A lifting mechanism and a counterweight system are installed on the outer side of the furnace body, corresponding to the flame damper. The counterweight system includes a sprocket 71 installed on the furnace body, corresponding to the tapping arm door; a chain 72 is attached to the sprocket, one end of which is connected to the flame damper; and a counterweight 73 is connected to the other end of the chain. The lifting mechanism can be a PLC-controlled traction device that pulls the counterweight end to raise and lower the flame damper, or a motor-driven sprocket wheel can be used to achieve this.

[0037] The tapping machine receives the tapping signal. Since the tapping arm's movement is interlocked with the furnace door's lifting mechanism, the furnace door's lifting mechanism begins to move upward, raising the flame damper. The arm's lifting mechanism is completed before it reaches the tapping arm's inlet. The arm then enters the furnace, lifts the billet, and places it on the cantilevered roller conveyor. Once the arm has completed its lifting mission, it returns to the outside of the furnace, and the flame damper descends to its original position to prevent flames from escaping. The height of the flame damper is controlled by a proximity switch.

[0038] As a further improvement to the present invention, an access window 624 can be provided on the flame damper, adapted to fit the tapping arm, allowing the tapping arm to enter the furnace through the access window 624. A roller 623 is provided on the flame damper above the access window, with the lower edge of the roller 623 lower than the upper edge of the access window. The height between the lower edge of the access window and the lower edge of the roller 623 is slightly greater than the height of the tapping arm. This ensures that the flame damper, under its own weight, always presses against the upper surface of the tapping arm, thereby ensuring that the access window remains in a constant position relative to the tapping arm.

[0039] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiments. Various modifications can be made within the scope of knowledge of those skilled in the art without departing from the spirit of the present invention. Many other changes and modifications that do not depart from the concept and scope of the present invention should be considered within the scope of protection of the present invention.

[0040] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0041] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A steel rolling heating furnace tapping machine tapping arm inlet and outlet sealing system, characterized in that: It includes a furnace body, one or more steel tapping machines are arranged side by side on one side of the furnace body, steel tapping arm inlets and outlets are arranged on the furnace body corresponding to the steel tapping arms of the steel tapping machines; steel tapping arm doors are arranged corresponding to the steel tapping arm inlets and outlets; wherein, The steel-discharging arm door includes: a cooling frame is provided on the furnace body at the inlet and outlet of the steel-discharging arm; a flame-blocking door is provided corresponding to the cooling frame; and a lifting mechanism for driving the flame-blocking door to rise and fall is provided on the outer side of the furnace body corresponding to the flame-blocking door.

2. The steel rolling heating furnace tapping machine tapping arm inlet and outlet sealing system according to claim 1, characterized in that: The cooling frame comprises a hollow frame body, and the hollow frame body is provided with a water inlet and a water outlet communicated with the hollow part of the frame body.

3. The steel rolling heating furnace tapping machine tapping arm inlet and outlet sealing system according to claim 1, characterized in that: The inner side of the flame baffle is provided with an inner lining, and the inner lining is composed of a high-temperature fiber blanket layer located on the outer side and a heavy casting material layer located on the inner side of the high-temperature fiber blanket layer.

4. The steel rolling heating furnace tapping machine tapping arm inlet and outlet sealing system according to claim 1, characterized in that: The inner side of the flame baffle is provided with an inner lining, and the inner lining is composed of a high-temperature fiber blanket layer located on the outer side and a heavy casting material layer located on the inner side of the high-temperature fiber blanket layer.

5. The steel rolling heating furnace tapping machine tapping arm inlet and outlet sealing system according to claim 1, characterized in that: A counterweight system is provided on the furnace body corresponding to the steel tapping arm door.

6. The steel rolling heating furnace tapping machine tapping arm inlet and outlet sealing system according to claim 5, characterized in that: The counterweight system includes: a sprocket is arranged on the furnace body corresponding to the steel tapping arm door; a chain is arranged on the sprocket, one end of the chain is connected to the flame barrier door; the other end of the chain is connected to the counterweight.

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