Double-branch material distribution device of heating furnace

Abstract

The utility model relates to the technical field of metallurgical equipment, in particular to a double-branch material distribution device of a heating furnace. According to the double-branch material distributing device of the heating furnace, an existing heating furnace is simple to transform and convenient to operate, two steel pipes can be arranged on the same tooth in the furnace through segmented design of the in-furnace roller way and the out-furnace roller way, and the production efficiency of the heating furnace is fully improved.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical equipment technology. More specifically, this utility model relates to a double-support feeding device for a heating furnace. Background Technology

[0002] Heat treatment is an essential process in the production of steel pipes or bars. The heating furnace is an indispensable piece of equipment in this process. Steel pipes or bars undergo heat treatment in the furnace according to a specific heating or cooling curve. This process is relatively slow, and it is one of the key factors limiting the output of steel pipes or bars. Therefore, how to increase the output of heating furnaces is a critical issue that all steel plants urgently need to address.

[0003] To increase output, one approach is to increase the number of heating furnaces, but this requires a relatively large investment. Another approach is to modify existing heating furnaces to produce more steel without altering their structure. For example, Chinese utility model patent application number 202410286292.3 discloses a method for feeding slabs in a walking beam slab heating furnace. This method proposes a staggered feeding pattern for the multi-row feeding mechanism of the walking beam slab heating furnace. Without affecting the furnace's utilization rate, the interval between slab tapping can be reduced by up to 57.7%, preventing interruptions in the subsequent rolling rhythm due to excessively long intervals, thus stabilizing the downstream rolling rhythm and increasing output. However, this feeding method requires at least two tapping positions to ensure stable slab tapping from the furnace. Modifying existing equipment based on this method requires additional tapping positions, placing higher demands on the furnace's site and necessitating additional site modifications. Utility Model Content

[0004] The purpose of this utility model is to provide a dual-support material feeding device for a heating furnace, which is simple to modify and easy to operate for existing heating furnaces. By designing the external roller conveyor for entering the furnace and the internal roller conveyor for exiting the furnace in sections, two steel pipes can be arranged on the same tooth inside the furnace, which greatly improves the production efficiency of the heating furnace.

[0005] To achieve these objectives and other advantages according to the present invention, a dual-support feeding device for a heating furnace is provided, comprising:

[0006] Walking beam furnace;

[0007] The feeding unit includes an external furnace inlet roller conveyor and a feeding mechanism disposed on one side of the external furnace inlet roller conveyor. The external furnace inlet roller conveyor is connected to the internal furnace inlet roller conveyor of the heating furnace. The external furnace inlet roller conveyor is provided with two feeding positions. The feeding mechanism feeds material to the external furnace inlet roller conveyor through either of the feeding positions.

[0008] The discharge unit includes an external discharge roller conveyor and a discharge mechanism disposed on one side of the external discharge roller conveyor, wherein the external discharge roller conveyor is connected to the internal discharge roller conveyor of the heating furnace.

[0009] Furthermore, in the aforementioned dual-support feeding device for a heating furnace, the feeding mechanism includes a feeding platform and a first feeding hook. The feeding platform is located on one side of the furnace external inlet roller conveyor, and the first feeding hook is located between the furnace external inlet roller conveyor and the feeding platform.

[0010] Furthermore, in the aforementioned dual-support feeding device for a heating furnace, the discharge mechanism includes a discharge platform and a quenching device. The discharge platform is disposed on one side of the outer furnace roller conveyor, and the quenching device is disposed between the discharge platform and the outer furnace roller conveyor. A second material-pulling hook is provided between the quenching device and the outer furnace roller conveyor, as well as between the quenching device and the discharge platform.

[0011] Furthermore, in the aforementioned dual-support feeding device for a heating furnace, the furnace external feed roller conveyor includes a first furnace external feed roller conveyor and a second furnace external feed roller conveyor connected end to end. The second furnace external feed roller conveyor is connected to the furnace internal feed roller conveyor. A first detection switch and a second detection switch are respectively provided on the first furnace external feed roller conveyor and the second furnace external feed roller conveyor, and a boundary detection switch is also provided at the connection between the two.

[0012] Furthermore, in the aforementioned dual-support feeding device for a heating furnace, the first detection switch is located in the middle of the first furnace inlet roller conveyor.

[0013] Furthermore, in the aforementioned dual-support feeding device for a heating furnace, the second detection switch is located in the middle of the second furnace inlet roller conveyor.

[0014] Furthermore, in the aforementioned dual-support feeding device for a heating furnace, an inlet detection switch is provided at the inlet roller conveyor near the inlet door of the walking beam furnace.

[0015] Furthermore, in the aforementioned dual-support feeding device for a heating furnace, an outlet detection switch is provided at the outlet roller conveyor near the outlet door of the walking beam furnace.

[0016] Furthermore, in the aforementioned dual-support feeding device for a heating furnace, the furnace inlet roller conveyor includes a first furnace inlet outer roller conveyor and a second furnace inlet outer roller conveyor connected end to end, and the second furnace inlet outer roller conveyor is connected to the furnace outlet outer roller conveyor.

[0017] The beneficial effects of this utility model are:

[0018] 1. The dual-support feeding device for heating furnace of this utility model can be modified based on the existing heating furnace. The modification is simple and the operation is convenient. By designing the external roller conveyor for entering the furnace and the internal roller conveyor for exiting the furnace in sections, two steel pipes can be arranged on the same tooth inside the furnace, which greatly improves the production efficiency of the heating furnace.

[0019] 2. In the dual-support feeding device of the heating furnace of this utility model, when the feeding unit conveys steel to the walking beam furnace, the first feeding hook of the feeding mechanism can feed the steel at two stations: the first furnace external roller conveyor or the second furnace external roller conveyor, so as to place the steel on the furnace external roller conveyor, which is convenient for on-site modification.

[0020] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the double-support material distribution device for the heating furnace described in this utility model.

[0022] The reference numerals in the attached figures are as follows:

[0023] 100. Feeding unit; 110. Feeding platform; 120. First feeding hook; 130. First detection switch; 140. Boundary detection switch; 150. Second detection switch; 160. First furnace entry roller conveyor; 170. Second furnace entry roller conveyor;

[0024] 200. Heating furnace; 210. Furnace inlet roller conveyor; 220. First furnace outlet roller conveyor; 230. Second furnace outlet roller conveyor; 240. Furnace inlet door; 250. Furnace outlet door; 260. Furnace inlet detection switch;

[0025] 300. Discharge unit; 310. Out-of-furnace roller conveyor; 320. Quenching equipment; 330. Discharge platform; 340. Out-of-furnace detection switch; 350. Second material feeding hook. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the embodiments, so that those skilled in the art can implement it based on the description.

[0027] It should be noted that in the description of this utility model, the terms "horizontal", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] like Figure 1 As shown, an embodiment of this utility model provides a dual-support fabric feeding device for a heating furnace, comprising:

[0029] 200-meter walking beam furnace;

[0030] The feeding unit 100 includes an external furnace inlet roller conveyor and a feeding mechanism disposed on one side of the external furnace inlet roller conveyor. The external furnace inlet roller conveyor is connected to the internal furnace inlet roller conveyor of the heating furnace 200. The external furnace inlet roller conveyor has two feeding positions, and the feeding mechanism feeds material to the external furnace inlet roller conveyor through either feeding position. Specifically, the feeding mechanism includes a feeding platform 110 and a first material-pushing hook 120. The feeding platform 110 is disposed on one side of the external furnace inlet roller conveyor, and the first material-pushing hook 120 is disposed between the external furnace inlet roller conveyor and the feeding platform 110.

[0031] The discharge unit 300 includes an external furnace roller conveyor 310 and a discharge mechanism disposed on one side of the external furnace roller conveyor 310. The external furnace roller conveyor 310 is connected to the internal furnace roller conveyor of the heating furnace 200. The discharge mechanism includes a discharge platform 330 and a quenching device 320. The discharge platform 330 is disposed on one side of the external furnace roller conveyor 310, and the quenching device 320 is disposed between the discharge platform 330 and the external furnace roller conveyor 310. A second material-pushing hook 350 is provided between the quenching device 320 and the external furnace roller conveyor 310, and between the quenching device 320 and the discharge platform 330.

[0032] In this embodiment, the steel is mainly steel pipes or bars. The steel is placed on the side of the loading platform 110 near the furnace inlet roller conveyor. The loading mechanism selects any loading position to load the steel onto the furnace inlet roller conveyor. After the loading position is determined, the first feeding hook 120 moves the steel pipe or bar from the determined loading position to the furnace inlet roller conveyor 310. Each feeding step includes two steel pieces. After both steel pieces are placed on the furnace inlet roller conveyor 310, the feeding step is completed. The furnace inlet door 240 of the heating furnace 200 is opened, and the furnace inlet roller conveyor sends the two steel pieces into the furnace inlet roller conveyor of the heating furnace 200. Then the furnace inlet door 240 of the heating furnace 200 is closed, and the two steel pieces enter the heating furnace 200 for heating. The walking beam inside the heating furnace 200 will move towards the furnace outlet roller conveyor at a certain speed according to the heating temperature curve of the steel. After the steel is heated in the heating furnace 200 and moved to the furnace exit roller conveyor, the furnace door 250 of the heating furnace 200 is opened. The furnace exit roller conveyor and the furnace exit roller conveyor 310 start working, conveying the steel to the furnace exit roller conveyor 310. When the steel moves to the side of the quenching equipment 320, the furnace exit roller conveyor 310 stops working. The second material-shifting hook 350 between the quenching equipment 320 and the furnace exit roller conveyor 310 shifts the two pieces of steel on the furnace exit roller conveyor 310 to the quenching equipment 320 for quenching. The quenching equipment 320 can be a water quenching system.

[0033] Preferably, as another embodiment of the present invention, the external furnace entry roller conveyor includes a first external furnace entry roller conveyor 160 and a second external furnace entry roller conveyor 170 connected end to end. The second external furnace entry roller conveyor 170 is connected to the internal furnace entry roller conveyor. The first external furnace entry roller conveyor 160 and the second external furnace entry roller conveyor 170 are respectively provided with a first detection switch 130 and a second detection switch 150, and a boundary detection switch 140 is also provided at the connection between the two.

[0034] In this embodiment, the first furnace external roller conveyor 160 and the second furnace external roller conveyor 170 respectively form two feeding positions on the furnace external roller conveyor. When the feeding unit 100 conveys steel to the walking beam furnace 200, the first feeding hook 120 of the feeding mechanism can feed the steel at either the first furnace external roller conveyor 160 or the second furnace external roller conveyor 170, placing the steel on the furnace external roller conveyor, which is convenient for on-site modification.

[0035] Specifically, the feeding mechanism uses the first furnace external roller conveyor 160 as the feeding position to feed steel to the furnace external roller conveyor. During feeding, steel is fed in pairs, including the following steps:

[0036] S1. The feeding mechanism moves the previous steel bar onto the first furnace external roller conveyor 160. After the first detection switch 130 detects the steel bar, the first furnace external roller conveyor 160 starts to work and drives the previous steel bar to move to the second furnace external roller conveyor 170.

[0037] S2. When the boundary detection switch 140 detects steel, the second furnace external roller conveyor 170 starts working to drive the previous steel piece to move toward the walking beam furnace 200.

[0038] S3. When the boundary detection switch 140 does not detect steel and the second detection switch 150 detects steel, the first furnace entry roller conveyor 160 and the second furnace entry roller conveyor 170 stop working.

[0039] S4. The feeding mechanism moves the next piece of steel onto the first furnace external roller conveyor 160. After the first detection switch 130 detects the steel, the first furnace external roller conveyor 160 starts to work, driving the previous piece of steel to move to the second furnace external roller conveyor 170. When the boundary detection switch 140 detects the steel, the first furnace external roller conveyor 160 stops working.

[0040] S5. The first furnace feed roller conveyor 160 and the second furnace feed roller conveyor 170 start working at the same speed at the same time. After feeding the two steel bars into the walking beam furnace 200 in sequence, the first furnace feed roller conveyor 160 and the second furnace feed roller conveyor 170 stop working.

[0041] By completing steps S1-S5 above, the feeding of two steel bars in a single group is finished. To feed the next group of two steel bars, simply repeat steps S1-S5.

[0042] When the feeding mechanism feeds steel into the furnace external roller conveyor 170 using the second furnace external roller conveyor as the feeding position, the steel is fed in pairs, including the following steps:

[0043] S1. The feeding mechanism moves the previous steel bar onto the second furnace external roller conveyor 170. After the second detection switch 150 detects the steel bar, the second furnace external roller conveyor 170 starts to work and drives the previous steel bar to move towards the first furnace external roller conveyor 160.

[0044] S2. When the boundary detection switch 140 detects steel, the first furnace external roller conveyor 160 starts working and drives the previous steel piece away from the second furnace external roller conveyor 170.

[0045] S3. When the boundary detection switch 140 does not detect steel and the first detection switch 130 detects steel, the first furnace external roller conveyor 160 and the second furnace external roller conveyor 170 stop working.

[0046] S4. The feeding mechanism moves the next piece of steel onto the second furnace external roller conveyor 170. After the second detection switch 150 detects the steel, the second furnace external roller conveyor 170 starts to work, driving the previous piece of steel to move towards the first furnace external roller conveyor 160. When the boundary detection switch 140 detects the steel, the second furnace external roller conveyor 170 stops working.

[0047] S5. The first furnace feed roller conveyor 160 and the second furnace feed roller conveyor 170 start working at the same speed at the same time. After feeding the two steel bars into the walking beam furnace 200 in sequence, the first furnace feed roller conveyor 160 and the second furnace feed roller conveyor 170 stop working.

[0048] By completing steps S1-S5 above, the feeding of two steel bars in a single group is finished. To feed the next group of two steel bars, simply repeat steps S1-S5.

[0049] Preferably, in another embodiment of the present invention, the first detection switch is located in the middle of the first furnace entry roller conveyor.

[0050] Preferably, in another embodiment of the present invention, the second detection switch is located in the middle of the second furnace inlet roller conveyor.

[0051] Preferably, in another embodiment of the present invention, an inlet detection switch 260 is provided at the inlet door 240 of the walking beam furnace 200 near the inlet roller conveyor inside the furnace. Regardless of whether the feeding mechanism feeds material from the first inlet roller conveyor 160 or the second inlet roller conveyor 170 to the inlet roller conveyor outside the furnace, during the process of feeding two steel bars into the walking beam furnace 200, the inlet door 240 is open, and the inlet detection switch 260 can detect the steel bars. When the inlet detection switch 260 does not detect the steel bars, the inlet roller conveyor inside the furnace, the first inlet roller conveyor outside the furnace 160 and the second inlet roller conveyor outside the furnace 170 stop working, and the inlet door 240 is closed.

[0052] Preferably, in another embodiment of this utility model, the furnace exit roller conveyor 310 is provided with a furnace exit detection switch 340 near the furnace inlet door 250 on the walking beam furnace 200. When the furnace exit roller conveyor opens to convey steel to the discharge unit 300, the following steps are included:

[0053] S1. The furnace door 250 is opened, the furnace roller conveyor starts to work, and the steel is conveyed to the furnace roller conveyor 310. After the furnace detection switch 340 detects the steel, the furnace roller conveyor 310 starts to work and drives the steel to move towards the discharge mechanism.

[0054] S2. When the furnace entry detection switch 260 does not detect steel, the furnace entry door 250 is closed, and the furnace exit roller conveyor stops working.

[0055] S3. After the discharge mechanism removes the steel from the furnace exit roller conveyor 310, the furnace exit roller conveyor 310 stops working.

[0056] Preferably, as another embodiment of the present invention, the furnace discharge roller conveyor includes a first furnace discharge roller conveyor 220 and a second furnace discharge roller conveyor 230 connected end to end. When the furnace discharge roller conveyor is opened to convey the steel to the discharge unit 300, the steel is fed in pairs, including the following steps:

[0057] S1. When the furnace door 250 is opened, the first and second furnace roller conveyors 220 and 230 start working to transfer the previous piece of steel to the furnace roller conveyor 310. After the furnace detection switch 340 detects the steel, the furnace roller conveyor 310 starts working to move the previous piece of steel toward the discharge mechanism.

[0058] S2. When the furnace entry detection switch 260 does not detect steel, the furnace entry door 250 is closed, and the first furnace exit roller conveyor 220 and the second furnace exit roller conveyor 230 stop working.

[0059] S3. After the discharge mechanism removes the previous steel bar from the furnace exit roller conveyor 310, the furnace exit roller conveyor 310 stops working.

[0060] S4. When the furnace door 250 is opened, the second furnace roller conveyor 230 starts working and conveys the next piece of steel to the furnace roller conveyor 310. After the furnace detection switch 340 detects the steel, the furnace roller conveyor 310 starts working and drives the next piece of steel to move towards the discharge mechanism.

[0061] S5. When the furnace entry detection switch 260 does not detect steel, the furnace entry door 250 is closed, and the first furnace exit roller conveyor 220 and the second furnace exit roller conveyor 230 stop working.

[0062] S6. After the discharge mechanism removes the last piece of steel from the furnace exit roller conveyor 310, the furnace exit roller conveyor 310 stops working.

[0063] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and embodiments shown and described herein.

Claims

1. A double-support feeding device for a heating furnace, characterized in that, include: Walking beam furnace; The feeding unit includes an external furnace inlet roller conveyor and a feeding mechanism disposed on one side of the external furnace inlet roller conveyor. The external furnace inlet roller conveyor is connected to the internal furnace inlet roller conveyor of the heating furnace. The external furnace inlet roller conveyor is provided with two feeding positions. The feeding mechanism feeds material to the external furnace inlet roller conveyor through either of the feeding positions. The discharge unit includes an external discharge roller conveyor and a discharge mechanism disposed on one side of the external discharge roller conveyor, wherein the external discharge roller conveyor is connected to the internal discharge roller conveyor of the heating furnace.

2. The double-support feeding device for a heating furnace as described in claim 1, characterized in that, The feeding mechanism includes a feeding platform and a first feeding hook. The feeding platform is located on one side of the furnace inlet roller conveyor, and the first feeding hook is located between the furnace inlet roller conveyor and the feeding platform.

3. The double-support feeding device for a heating furnace as described in claim 1, characterized in that, The discharge mechanism includes a discharge platform and a quenching device. The discharge platform is located on one side of the outer furnace roller conveyor. The quenching device is located between the discharge platform and the outer furnace roller conveyor. A second material-pulling hook is provided between the quenching device and the outer furnace roller conveyor, and between the quenching device and the discharge platform.

4. The dual-support feeding device for a heating furnace as described in claim 3, characterized in that, The quenching equipment is a water quenching machine.

5. The double-support feeding device for a heating furnace as described in claim 1, characterized in that, The external furnace inlet roller conveyor includes a first external furnace inlet roller conveyor and a second external furnace inlet roller conveyor connected end to end. The second external furnace inlet roller conveyor is connected to the internal furnace inlet roller conveyor. The first external furnace inlet roller conveyor and the second external furnace inlet roller conveyor are respectively equipped with a first detection switch and a second detection switch, and a boundary detection switch is also provided at the connection between the two.

6. The double-support material feeding device for a heating furnace as described in claim 5, characterized in that, The first detection switch is located in the middle of the first furnace external roller conveyor.

7. A double-support feeding device for a heating furnace as described in claim 5, characterized in that, The second detection switch is located in the middle of the second furnace external roller conveyor.

8. A double-support feeding device for a heating furnace as described in claim 5, characterized in that, An inlet detection switch is provided at the inlet roller conveyor near the inlet door of the walking beam furnace.

9. A double-support feeding device for a heating furnace as described in claim 5, characterized in that, An outlet detection switch is provided at the outlet roller conveyor near the outlet door of the walking beam furnace.

10. A double-support feeding device for a heating furnace as described in claim 1, characterized in that, The furnace feed roller conveyor of the heating furnace includes a first feed roller conveyor and a second feed roller conveyor connected end to end, and the second feed roller conveyor is connected to the furnace feed roller conveyor.

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