Three-section type heating furnace

Abstract

The three-section type heating furnace comprises a furnace body, flashboards, a hydraulic cylinder, a first pull rope, a pull rod and a second pull rope, the furnace body is provided with an inlet and an outlet, the multiple flashboards are vertically arranged at the inlet and the outlet of the furnace body in a sliding mode, the hydraulic cylinder is fixedly arranged on one side of the furnace body, and the first pull rope is fixedly arranged on the other side of the furnace body. One end of the first pull rope is fixedly connected with a piston rod of the hydraulic cylinder, the other end of the first pull rope is fixedly connected with the pull rod, one end of the second pull rope is fixedly connected with the top of the flashboard, and the other end of the second pull rope is detachably connected with the pull rod. And the opening degree of the furnace body opening is controlled, so that more heat is prevented from being dissipated from the furnace body, and the effects of preserving heat of the furnace body and reducing energy waste are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating furnaces, in particular to a three-stage heating furnace. Background Art

[0002] A heating furnace is a device in the metallurgical industry that heats materials or workpieces to the rolling and forging temperature. It is widely used in metallurgical steelmaking. A three-stage heating furnace is a furnace body with a preheating section, a heating section and a soaking section arranged in sequence along the length of the furnace. When heating the billet, the furnace door is first opened, and the billet enters from the inlet of the furnace body, where it is heated and finally transported out from the outlet of the furnace body. During the process of the billet entering or being transported out, the furnace door is opened to transport the billet into the furnace body. However, the billets have different specifications and sizes, and the size of the furnace door cannot be adjusted. This results in the same furnace door opening for smaller billets and larger billets when they enter the furnace body. When the billet size is small, the furnace door opening is large, which will cause heat loss in the furnace body, which is not conducive to furnace insulation and causes energy waste. In addition, the temperature in the furnace body is dissipated to the workshop, which will cause the workshop temperature to rise. Workers who work under high temperatures for a long time are prone to heatstroke and cause harm to their bodies. Utility Model Content

[0003] The purpose of the utility model is to provide a three-stage heating furnace in view of the above-mentioned deficiencies in the prior art.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] A three-stage heating furnace comprises a furnace body,

[0006] There are multiple gates, which are slidably arranged at the inlet and outlet of the furnace body;

[0007] A hydraulic cylinder is fixedly arranged on one side of the furnace body;

[0008] A first pull rope, one end of which is fixedly connected to the piston rod of the hydraulic cylinder, and the other end of which is fixedly connected to the pull rod;

[0009] The second pull rope has one end fixedly connected to the top of the gate plate, and the other end detachably fixedly connected to the pull rod.

[0010] Preferably, a column is fixedly provided on one side of the furnace body, a first roller is rotatably provided on the column, and the first pull rope is wound around the first roller; a plurality of support rods are fixedly provided on the top of the furnace body, a second roller is rotatably provided on the support rods, and the second pull rope is wound around the second roller.

[0011] Preferably, a plurality of hanging rings are fixedly provided on one side of the pull rod, and a hook is fixedly connected to one end of the second pull rope away from the gate plate, and the hook is detachably connected to the hanging ring.

[0012] Preferably, a groove is provided on one side of the gate plate, and a sliding bar is provided on the other side, and the sliding bar of the gate plate is slidably arranged in the groove of the adjacent gate plate.

[0013] Preferably, slide grooves are provided at the inlet and outlet of the furnace body, and the outermost gate plate is slidably disposed in the slide grooves.

[0014] Preferably, the furnace body comprises a preheating section, a heating section and a soaking section.

[0015] Preferably, a conveying device is also provided, and the conveying device is located at the inlet and outlet of the furnace body. The conveying device includes a frame, and the frame includes a side plate. The side plates are provided with two, and a plurality of conveying rollers are rotatably provided between the two side plates. A limiting component is also provided between the two side plates.

[0016] Preferably, the limiting assembly comprises a limiting plate and a threaded rod, the threaded rod is threadedly connected to the side plate, and one end of the threaded rod is rotatably connected to the limiting plate.

[0017] Preferably, a guide rod is fixedly arranged on the limiting plate, and the guide rod is slidably arranged on the side plate.

[0018] The beneficial effects of adopting the above technical solution are:

[0019] 1. In the utility model, when heating steel billets of different sizes, the opening of the furnace door can be controlled by adjusting the number of gates, specifically by connecting different numbers of second pull ropes to the pull rod, and then the hydraulic cylinder drives the first pull rope and the pull rod to move, and the gate is opened, so as to adjust the opening of the furnace door to adapt to steel billets of different sizes, which can reduce the heat loss in the furnace body, keep the furnace body warm, and play a role in saving energy;

[0020] 2. In the utility model, conveying devices are provided at the inlet and outlet of the furnace body. The position of the steel billet is limited and adjusted by adjusting the limit assembly on the conveying device so that the steel billet can accurately enter the furnace body from the gate opening to avoid collision between the steel billet and the gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0022] Figure 2 yes Figure 1 A magnified view of part A;

[0023] Figure 3 It is a three-dimensional schematic diagram of the furnace body of the utility model;

[0024] Figure 4 It is a three-dimensional schematic diagram of the gate plate of the utility model.

[0025] In the figure: 1 is the furnace body, 2 is the gate, 3 is the hydraulic cylinder, 4 is the first pull rope, 5 is the pull rod, 6 is the second pull rope, 7 is the column, 8 is the first roller, 9 is the support rod, 10 is the second roller, 11 is the hanging ring, 12 is the hook, 13 is the groove, 14 is the slide bar, 15 is the slide chute, 16 is the preheating section, 17 is the heating section, 18 is the equalizing section, 19 is the frame, 20 is the side plate, 21 is the conveying roller, 22 is the limit plate, 23 is the threaded rod, and 24 is the guide rod. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figure 1As shown, a three-stage heating furnace comprises a furnace body 1, a gate plate 2, a hydraulic cylinder 3, a first pull rope 4, a pull rod 5 and a second pull rope 6. The furnace body 1 is provided with an inlet and an outlet. The gate plate 2 is provided with at least one gate plate, and the gate plate is vertically slidably arranged at the inlet and the outlet of the furnace body 1. In this embodiment, five gate plates 2 are provided at the inlet and the outlet of the furnace body 1, and two adjacent gate plates 2 fit tightly and can slide against each other. There are multiple second pull ropes 6, and the number of the second pull ropes 6 is the same as the number of the gate plates 2 and corresponds one to one. The upper end of the gate plate 2 is fixedly connected to one end of the second pull rope 6, and the other end of the second pull rope 6 is detachably fixedly connected to the pull rod 5. One end of the second pull rope 4 is fixedly connected to the pull rod 5, and the other end is fixedly connected to the piston rod of the hydraulic cylinder 3. The cylinder barrel of the hydraulic cylinder 3 is fixedly arranged on one side of the furnace body 1 on the ground; in the utility model, before the steel billet enters the furnace body 1, the number of gate plates 2 to be opened is determined according to the width of the steel billet, the second pull rope 6 connected to the gate plate 2 to be opened is fixedly connected to the pull rod 5, and the second pull rope 6 connected to the gate plate 2 that does not need to be opened is separated from the pull rod 5, and the piston rod of the hydraulic cylinder 3 drives the first pull rope 4 and the pull rod 5 to move, which can drive the second pull rope 6 connected to the pull rod 5 to move, so that the gate plate 2 is opened, and the other gate plates 2 remain in a closed state. The furnace mouth opening of the furnace body 1 is adapted to the steel billet, and the furnace mouth opening is small, which can reduce the temperature loss, keep the inside of the furnace body warm, reduce energy waste, and at the same time prevent the stability of the furnace body from being dissipated into the workshop, avoiding the increase of the workshop stability; similarly, when the steel billet is transported out from the outlet of the furnace body 1, the number of gate plates 2 adapted to the size of the steel billet is opened at the same time to reduce temperature loss.

[0030] Furthermore, a lifting ear is fixedly provided on the top of the gate plate 2, and a connecting ring is fixedly provided on the end of the second pull rope 6 away from the pull rod 5, and the connecting ring is fixedly connected to the lifting ear, thereby achieving a fixed connection between the second pull rope 6 and the gate plate 2.

[0031] Furthermore, if Figure 1 As shown, a column 7 is fixedly provided on one side of the furnace body 1, and the bottom of the column 7 is fixedly provided on the ground. A first roller 8 is rotatably provided on the column 7, and the first pull rope 4 is wound around the first roller 8; a plurality of support rods 9 are fixedly provided on the top of the furnace body 1, and the number of the support rods 9 is the same as the number of the gate plates 2. The support rods 9 are located above the gate plates 2, and the positions of the support rods 9 and the gate plates 2 correspond one to one. A second roller 10 is rotatably provided on the support rods 9, and the second pull rope 6 is wound around the second roller 10. Each second pull rope 6 corresponds to the second roller 10 on one of the support rods 9. The first roller 8 and the second roller 10 play a reversing role, so that the gate plates 2 can slide up and down smoothly, and the piston rod of the hydraulic cylinder 3 can also move up and down.

[0032] Furthermore, if Figure 2 As shown, a plurality of hanging rings 11 are fixedly provided on one side of the pull rod 5, and the number of the hanging rings 11 is the same as the number of the gate plates 2. The gate plates 2 and the hanging rings 11 correspond one to one. A hook 12 is fixedly connected to the end of the second pull rope 6 away from the gate plate 2, and the hook 12 is detachably connected to the hanging ring 11. When the number of gate plates 2 to be opened is adjusted, it is only necessary to hang the hook 12 corresponding to the gate plate 2 to be opened on the hanging ring 11. When the hydraulic cylinder drives the pull rod 5 to move, it can drive the gate plate 2 to open. The hook 12 corresponding to the gate plate 2 that does not need to be opened is separated from the hanging ring 11, and the gate plate 2 will not be opened.

[0033] Furthermore, if Figure 4 As shown, a groove 13 is provided on one side of the gate plate 2, and a slide bar 14 is provided on the other side. The slide bar 14 of the gate plate 2 is slidably arranged in the groove 13 of the adjacent gate plate 2, which can make the seal between the two adjacent gate plates 2 tighter and avoid air leakage. At the same time, the gate plate 2 is prevented from shaking during the opening and closing process, ensuring that the movement of the gate plate 2 is more stable.

[0034] Furthermore, the inlet and outlet of the furnace body 1 are both provided with slide grooves 15, and the outermost gate plate 2 is slidably arranged in the slide groove 15, which can stabilize the opening and closing of the gate plate 2, and the furnace body can be sealed after the gate plate is closed.

[0035] Furthermore, if Figure 3 As shown, the furnace body 1 includes a preheating section 16 , a heating section 17 and a soaking section 18 .

[0036] In another embodiment, a conveying device is also provided, and the conveying device is located at the inlet and outlet of the furnace body 1. The conveying device includes a frame 19, and the frame 19 includes a side plate 20. There are two side plates 20, and a plurality of conveying rollers 21 are rotatably arranged between the two side plates 20. The conveying rollers 21 are driven to rotate by a motor fixed on the side plate 20 to realize transmission and transportation of the steel billet. A limiting assembly is also provided between the two side plates 20, and the limiting assembly is used to limit the position of the steel billet so that the steel billet can be aligned with the furnace mouth to avoid damage to the remaining gate plates.

[0037] Furthermore, the limiting assembly includes a limiting plate 22 and a threaded rod 23, and two limiting plates 22 and two threaded rods 23 are provided. The steel billet is located between the two limiting plates 22, and the threaded rod 23 is threadedly connected to the side plate 20. One end of the threaded rod 23 is rotatably connected to the limiting plate 22. The limiting plate 22 and the threaded rod 23 are vertically arranged, and the limiting plate 22 is parallel to the moving direction of the steel billet. In this embodiment, the position of the limiting plate 22 is adjusted by rotating the threaded rod 23, so that the steel billet can move between the two limiting plates 22, so that the steel billet is aligned with the opening of the furnace door, thereby preventing the steel billet from causing damage to the unopened gate 2.

[0038] Furthermore, a guide rod 24 is fixedly provided on the limit plate 22, and the guide rod 24 is slidably provided on the side plate 20. The guide rod 24 can stabilize the limit plate 22 and prevent the limit plate 22 from shaking during the conveying process.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A three-stage heating furnace, characterized in that: comprising a furnace body (1), A plurality of gate plates (2) are provided and are slidably arranged at the inlet and outlet of the furnace body (1); A hydraulic cylinder (3) is fixedly arranged on one side of the furnace body (1); A first pull rope (4), one end of which is fixedly connected to the piston rod of the hydraulic cylinder (3), and the other end of which is fixedly connected to a pull rod (5); The second pull rope (6) has one end fixedly connected to the top of the gate plate (2) and the other end detachably fixedly connected to the pull rod (5).

2. A three-stage heating furnace according to claim 1, characterized in that: A column (7) is fixedly provided on one side of the furnace body (1), a first roller (8) is rotatably provided on the column (7), and the first pull rope (4) is wound around the first roller (8); a plurality of support rods (9) are fixedly provided on the top of the furnace body (1), a second roller (10) is rotatably provided on the support rods (9), and the second pull rope (6) is wound around the second roller (10).

3. A three-stage heating furnace according to claim 2, characterized in that: A plurality of hanging rings (11) are fixedly provided on one side of the pull rod (5); a hook (12) is fixedly connected to one end of the second pull rope (6) away from the gate plate (2); and the hook (12) is detachably connected to the hanging ring (11).

4. A three-stage heating furnace according to claim 1, characterized in that: A groove (13) is provided on one side of the gate plate (2), and a sliding bar (14) is provided on the other side. The sliding bar (14) of the gate plate (2) is slidably arranged in the groove (13) of the adjacent gate plate (2).

5. A three-stage heating furnace according to claim 1, characterized in that: The inlet and outlet of the furnace body (1) are both provided with slide grooves (15), and the outermost gate plate (2) is slidably arranged in the slide grooves (15).

6. A three-stage heating furnace according to claim 1, characterized in that: The furnace body (1) comprises a preheating section (16), a heating section (17) and a heat equalizing section (18).

7. The three-stage heating furnace according to claim 1, characterized in that: A conveying device is also provided, the conveying device is located at the inlet and outlet of the furnace body (1), the conveying device comprises a frame (19), the frame (19) comprises a side plate (20), two side plates (20) are provided, a plurality of conveying rollers (21) are rotatably provided between the two side plates (20), and a limiting component is also provided between the two side plates (20).

8. A three-stage heating furnace according to claim 7, characterized in that: The limiting assembly comprises a limiting plate (22) and a threaded rod (23); the threaded rod (23) is threadedly connected to the side plate (20); and one end of the threaded rod (23) is rotatably connected to the limiting plate (22).

9. A three-stage heating furnace according to claim 8, characterized in that: A guide rod (24) is fixedly arranged on the limiting plate (22), and the guide rod (24) is slidably arranged on the side plate (20).

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