A sintering machine flue gas circulation hood protection device and a sintering machine

Abstract

The present invention discloses a protective device for a sintering machine flue gas circulation hood, comprising a deformation detection module and a displacement detection module. The deformation detection modules are disposed on both sides of the front of the sintering machine's trolley railings and are used to detect deformation of the trolley railings; the displacement detection module is disposed at the rear of the flue gas circulation hood and is used to detect displacement of the flue gas circulation hood. The deformation detection module and the displacement detection module are also electrically connected to the sintering machine's main control module. This enables automatic monitoring of the deformation of the sintering machine's trolley railings and the displacement of the flue gas circulation hood, preventing the sintering machine from malfunctioning due to excessive displacement of the flue gas circulation hood caused by deformation of the trolley railings.

Description

Technical Field

[0001] The present invention relates to the technical field of metallurgy, and in particular to a sintering machine fume circulation cover protection device and a sintering machine. Background Art

[0002] The sintering machine is a crucial piece of equipment in the metallurgical industry's sintering process, responsible for distributing the sintered mix, igniting the mix, and performing the entire sintering process. The flue gas recirculation hood, located in the center of the sintering machine, forms a relatively enclosed space with the sintering machine carriage. Flue gas drawn from the main sintering flue enters the hood through an upper recirculation duct, providing heat to the sintering material bed and achieving thermal circulation.

[0003] Due to the high sintering temperature, the trolley body is in a long-term cold-hot cycle working environment. The bolts connecting the trolley guardrail are very easy to loosen. In addition, the trolley guardrail is easily squeezed outward and even deformed due to the long-term pressure of the sintering material layer. In order to ensure airtightness, the distance between the trolley guardrail and the side wall of the flue gas circulation hood is relatively small, usually around 50mm. If the outward deformation of the trolley guardrail exceeds this distance, the trolley guardrail will push the flue gas circulation hood forward, causing damage to the connection between the flue gas circulation hood and the upper circulation pipe, affecting the normal operation of the sintering machine. Summary of the Invention

[0004] In view of this, the present invention provides a sintering machine flue gas circulation hood protection device and a sintering machine, which can automatically monitor the deformation of the trolley guardrail of the sintering machine and the displacement of the flue gas circulation hood, so as to avoid the sintering machine from failing to operate normally due to excessive displacement of the flue gas circulation hood caused by the deformation of the trolley guardrail.

[0005] An embodiment of the first aspect of the present invention provides a sintering machine flue gas circulation hood protection device, including a deformation detection module and a displacement detection module. The deformation detection modules are arranged on both sides of the front of the trolley guardrail of the sintering machine, and the deformation detection module is used to detect the deformation of the trolley guardrail; the displacement detection module is arranged at the rear of the flue gas circulation hood, and the displacement detection module is used to detect the displacement of the flue gas circulation hood; the deformation detection module and the displacement detection module are also used to be electrically connected to the main control module of the sintering machine.

[0006] Furthermore, the deformation detection module includes a first bracket and a first travel switch. The first bracket includes a first support rod and a first connecting rod. The first support rod is arranged in a vertical direction and is connected to the middle skeleton of the sintering machine. The first connecting rod is arranged in a horizontal direction and is connected to the top of the first support rod; the first travel switch is connected to the first connecting rod, and the contacts of the first travel switch are arranged opposite to the trolley railing. The first travel switch is also used to be electrically connected to the main control module.

[0007] Furthermore, the horizontal distance between the contact of the first travel switch and the trolley guardrail is equal to the distance between the smoke circulation hood and the trolley guardrail.

[0008] Furthermore, the displacement detection module includes a second bracket, a third bracket and a second travel switch, the second bracket includes a second support rod, the second support rod is arranged in a vertical direction and connected to the middle frame; the third bracket includes a second connecting rod, the second connecting rod is arranged in a horizontal direction and connected to the rear of the flue gas circulation hood, and a contact plate is provided on the second connecting rod; the second travel switch is connected to the second support rod, the contacts of the second travel switch are arranged opposite to the contact plate, and the second travel switch is also used to be electrically connected to the main control module.

[0009] Furthermore, the horizontal distance between the contact point of the second travel switch and the contact plate is equal to the maximum allowable displacement of the flue gas circulation hood.

[0010] Furthermore, the contact plate and the second connecting rod are connected by bolts.

[0011] An embodiment of the second aspect of the present invention provides a sintering machine, including a trolley body, a flue gas circulation hood, a main control module, and a sintering machine flue gas circulation hood protection device as provided in the embodiment of the first aspect. The trolley body is located above the middle skeleton of the sintering machine, a trolley guardrail is provided on the trolley body, and the flue gas circulation hood is provided on the outside of the trolley guardrail. The main control module is used to control the switch of the trolley body, and the deformation detection module and the displacement detection module are electrically connected to the main control module.

[0012] The beneficial effects of the technical solution provided by the embodiment of the present invention include at least the following: a sintering machine flue gas circulation hood protection device, comprising a deformation detection module and a displacement detection module, wherein the deformation detection module is arranged on both sides of the front of the trolley railing of the sintering machine, and the deformation detection module is used to detect the deformation of the trolley railing; the displacement detection module is arranged at the rear of the flue gas circulation hood, and the deformation detection module is used to detect the displacement of the flue gas circulation hood; the deformation detection module and the displacement detection module are also used to be electrically connected to the main control module of the sintering machine. Thus, the deformation of the trolley railing of the sintering machine and the displacement of the flue gas circulation hood are automatically monitored, thereby avoiding the sintering machine from being unable to operate normally due to excessive displacement of the flue gas circulation hood caused by deformation of the trolley railing.

[0013] Among them, a distance is set between the contacts of the first stroke switch and the trolley guardrail, which can avoid the first stroke switch from falsely reporting a fault when the deformation of the trolley guardrail is within the allowable range; a distance is also set between the contacts of the second stroke switch and the contact plate, which can avoid the second stroke switch from falsely reporting a fault when the displacement of the flue gas circulation hood is within the allowable range, such as when the flue gas circulation hood moves normally due to thermal expansion.

[0014] The second connecting rod and the contact plate are connected by detachable bolts, which facilitates disassembly and assembly of the displacement detection module during maintenance.

[0015] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference numerals are used throughout the accompanying drawings to denote the same components.

[0017] Figure 1 A schematic structural diagram of a sintering machine fume circulation hood protection device provided by one embodiment of the present invention is shown;

[0018] Figure 2 Shown Figure 1 A schematic structural diagram of a deformation detection module according to the embodiment shown;

[0019] Figure 3 Shown Figure 1 A schematic structural diagram of a displacement detection module according to the embodiment shown;

[0020] Figure 4 Shown Figure 3 A schematic structural diagram of the displacement detection module along direction A in the illustrated embodiment.

[0021] in, Figures 1 to 4 The corresponding relationship between the reference numerals and component names is as follows:

[0022] 10 deformation detection module, 11 first bracket, 111 first support rod, 112 first connecting rod, 12 first travel switch, 20 displacement detection module, 21 second bracket, 211 second support rod, 22 third bracket, 221 second connecting rod, 23 second travel switch, 24 contact plate, 25 bolt, 30 middle frame, 31 trolley body, 32 smoke circulation hood, 33 main control module, 34 trolley guardrail. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present invention and the features therein can be combined with each other without conflict.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0025] Refer to the following Figures 1 to 4 A sintering machine fume circulation hood protection device and a sintering machine are described according to some embodiments of the present invention.

[0026] The sintering machine is one of the important equipment in the sintering process of the metallurgical industry. It is used for the distribution, ignition and entire sintering process of the sintered mixed material. The existing sintering machine frame is usually divided into three parts: the head frame, the middle frame and the tail frame. The trolley body is arranged above the middle frame. Trolley guardrails are provided on both sides of the trolley body to shield the sintered mixed material inside. The flue gas circulation hood is arranged on the outside of the trolley guardrail to form a closed space together with the trolley body.

[0027] like Figures 1 to 3 As shown, a protection device for the flue gas circulation hood 32 of a sintering machine provided in accordance with an embodiment of the first aspect of the present invention includes a deformation detection module 10 and a displacement detection module 20. The deformation detection module 10 is arranged on both sides of the front of the trolley guardrail 34 of the sintering machine, and is used to detect the deformation of the trolley guardrail 34; the displacement detection module 20 is arranged at the rear of the flue gas circulation hood 32, and is used to detect the displacement of the flue gas circulation hood 32; the deformation detection module 10 and the displacement detection module 20 are also used to be electrically connected to the main control module 33 of the sintering machine. In this way, the deformation of the trolley guardrail 34 of the sintering machine and the displacement of the flue gas circulation hood 32 are automatically monitored, forming a double protection for the connection of the flue gas circulation hood 32, effectively avoiding accidents caused by the deformation of the trolley guardrail 34 pushing the flue gas circulation hood 32 to abnormal displacement, thereby improving the working efficiency of the sintering machine.

[0028] Specifically, due to being in a cold-hot cycle working environment for a long time and being squeezed by the sintering material layer, the trolley guardrail 34 is prone to outward deformation; when the deformation of the trolley guardrail 34 on any side exceeds the allowable value, the trolley guardrail 34 contacts the deformation detection module 10, and triggers the deformation detection module 10 to feed back the signal to the main control module 33 of the sintering machine, and the main control module 33 controls the main transmission of the sintering machine to stop; if the deformation detection module 10 fails and cannot control the main transmission of the sintering machine to stop in time, the trolley guardrail 34 pushes the flue gas circulation hood 32 to move backward. When the moving distance exceeds the maximum allowable displacement, the flue gas circulation hood 32 contacts the displacement detection module 20, and triggers the displacement detection module 20 to feed back the signal to the main control module 33 of the sintering machine, and the main control module 33 controls the main transmission of the sintering machine to stop, so as to avoid damaging the seal between the trolley body 31 and the flue gas circulation hood 32.

[0029] Among them, there are two groups of deformation detection modules 10, which are located on both sides of the front of the trolley guardrail 34. When the deformation of the trolley guardrail 34 on one side exceeds the allowable value, the deformation detection module 10 is triggered to feedback a signal to the main control module 33, thereby avoiding the deformation of the two sides of the trolley guardrail 34 being inconsistent, which causes the deformation detection module 10 to fail to monitor the deformation of the trolley guardrail 34.

[0030] like Figure 2 As shown, the deformation detection module 10 includes a first bracket 11 and a first travel switch 12. The first bracket 11 includes a first support rod 111 and a first connecting rod 112, which are used to support and fix the first travel switch 12. The first support rod 111 is arranged in the vertical direction and is connected to the middle skeleton 30 of the sintering machine. The first connecting rod 112 is arranged in the horizontal direction and is connected to the top of the first support rod 111. A first fixing rod is arranged between the first support rod 111 and the first connecting rod 112 to fix the first bracket 11 to prevent the first travel switch 12 from falsely reporting a fault due to shaking. The first travel switch 12 is connected to the first connecting rod 112. The contacts of the first travel switch 12 are arranged opposite to the trolley guardrail 34. The first travel switch 12 is also used to be electrically connected to the main control module 33, so that when the deformation of the trolley guardrail 34 exceeds the allowable value, the trolley guardrail 34 can contact the contacts of the first travel switch 12, triggering the first travel switch 12 to feedback a signal to the main control module 33.

[0031] The material of the trolley guardrail 34 is usually metal, and the deformation detection module 10 is located on both sides of the trolley guardrail 34. Therefore, when the deformation of the trolley guardrail 34 exceeds the allowable value, it can directly trigger the contact action of the first travel switch 12.

[0032] It is understood that the connection method between the first support rod 111 and the middle frame 30 is not limited here, and it is only necessary to ensure the firmness of the connection to prevent the trolley guardrail 34 from deforming and causing the first bracket 11 to fall off. Preferably, the first bracket 11 is welded to the middle frame 30 of the sintering machine.

[0033] like Figure 2 As shown, the horizontal distance between the contact of the first travel switch 12 and the trolley guardrail 34 is equal to the spacing between the flue gas recirculation hood 32 and the trolley guardrail 34. This ensures that the deformation of the trolley guardrail 34 does not exceed the allowable range. In other words, before the trolley guardrail 34 contacts the flue gas recirculation hood 32, the first travel switch 12 will not falsely indicate a fault. When the trolley guardrail 34 begins to contact the flue gas recirculation hood 32 due to deformation, the contact of the first travel switch 12 will also contact the trolley guardrail 34, triggering the first travel switch 12 to feedback a signal to the main control module 33. Typically, the spacing between the flue gas recirculation hood 32 and the trolley guardrail 34 is relatively small, approximately 50 mm.

[0034] like Figures 3 and 4 As shown, the displacement detection module 20 includes a second bracket 21, a third bracket 22 and a second travel switch 23. The second bracket 21 includes a second support rod 211 for supporting and fixing the second travel switch 23. The second support rod 211 is arranged in the vertical direction and is connected to the middle skeleton 30; the third bracket 22 includes a second connecting rod 221 for supporting and fixing the contact plate 24. The second connecting rod 221 is arranged in the horizontal direction and is connected to the rear of the flue gas circulation hood 32. A contact plate 24 is provided on the second connecting rod 221, and the contact plate 24 can trigger the second travel switch 23; the second travel switch 23 is connected to the second support rod 211, and the contacts of the second travel switch 23 are arranged opposite to the contact plate 24. The second travel switch 23 is also used to be electrically connected to the main control module 33, so that when the moving distance of the flue gas circulation hood 32 exceeds the maximum allowable displacement, the contact plate 24 can contact the contacts of the second travel switch 23, triggering the second travel switch 23 to feedback a signal to the main control module 33.

[0035] To avoid obstructing the normal movement of the trolley body 31, the displacement detection module 20 needs to be located on one side behind the smoke recirculation hood 32, preventing the contacts of the second travel switch 23 from directly contacting the smoke recirculation hood 32. By providing a contact plate 24, when the movement distance of the smoke recirculation hood 32 exceeds the maximum allowable displacement, the contact plate 24 can be pushed to contact the second travel switch 23, triggering the contact of the second travel switch 23. Preferably, the contact plate 24 is made of steel.

[0036] It is understood that there is no limitation on the connection method between the second support rod 211 and the central frame 30, nor on the connection method between the second connecting rod 221 and the flue gas circulation hood 32. It is only necessary to ensure the firmness of the connection to prevent the contact plate 24 from striking the contact point of the second limit switch 23 when the flue gas circulation hood 32 moves, causing the second support rod 211 or the second connecting rod 221 to fall off. Preferably, the second support rod 211 is welded to the central frame 30 of the sintering machine, and the second connecting rod 221 is welded to the rear of the flue gas circulation hood 32.

[0037] like Figures 3 and 4 As shown, the horizontal distance between the contact of the second travel switch 23 and the contact plate 24 is equal to the maximum allowable displacement of the flue gas circulation hood 32, so that the moving distance of the flue gas circulation hood 32 is within the allowable range. When the flue gas circulation hood 32 moves normally due to thermal expansion, the second travel switch 23 will not falsely report a fault; when the moving distance of the flue gas circulation hood 32 exceeds the maximum allowable displacement and begins to destroy the seal between the flue gas circulation hood 32 and the trolley body 31, the contact of the second travel switch 23 contacts the contact plate 24 and triggers the second travel switch 23 to feedback a signal to the main control module 33.

[0038] like Figure 3As shown, the contact plate 24 is connected to the second connecting rod 221 with bolts 25, which facilitates disassembly and installation. Specifically, when the sintering machine is shut down for maintenance and the flue gas circulation hood 32 needs to be moved, the contact plate 24 is removed from the third bracket 22 to avoid triggering the second travel switch 23 and causing a false alarm.

[0039] like Figure 1 As shown, a sintering machine provided according to an embodiment of the second aspect of the present invention includes a trolley body 31, a flue gas circulation hood 32, a main control module 33, and a protection device for the flue gas circulation hood 32 of the sintering machine provided in the embodiment of the first aspect. The trolley body 31 is located above the middle skeleton 30 of the sintering machine. A trolley guardrail 34 is provided on the trolley body 31. The flue gas circulation hood 32 is provided on the outside of the trolley guardrail 34. The main control module 33 is used to control the switch of the trolley body 31. The deformation detection module 10 and the displacement detection module 20 are electrically connected to the main control module 33. In this way, the deformation of the trolley guardrail 34 and the displacement of the flue gas circulation hood 32 of the sintering machine are automatically monitored, forming a double protection for the connection of the flue gas circulation hood 32, effectively avoiding accidents caused by the deformation of the trolley guardrail 34 and the abnormal displacement of the flue gas circulation hood 32, thereby improving the working efficiency of the sintering machine.

[0040] In the description of the present invention, the term "plurality" refers to two or more than two. Unless otherwise expressly defined, the orientations or positional relationships indicated by the terms "upper" and "lower" are orientations or positional relationships based on the drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limitations on the present invention. The terms "connect," "install," and "fix" should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the description of the present invention, the terms "one embodiment," "some embodiments," "specific embodiments," etc., mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0042] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A sintering machine flue gas circulation cover protection device, characterized in that: include: A deformation detection module (10) is provided on both sides of the front portion of a trolley railing (34) of the sintering machine, and the deformation detection module (10) is used to detect the deformation of the trolley railing (34); a displacement detection module (20), relative to the deformation detection module (10), the displacement detection module (20) being arranged at the rear of the smoke circulation hood (32), the displacement detection module (20) being used to detect the displacement of the smoke circulation hood (32); The deformation detection module (10) and the displacement detection module (20) are also used to be electrically connected to the main control module (33) of the sintering machine; Wherein, the deformation detection module (10) comprises: A first bracket (11) includes a first support rod (111) and a first connecting rod (112), wherein the first support rod (111) is arranged in a vertical direction and connected to the middle frame (30) of the sintering machine, and the first connecting rod (112) is arranged in a horizontal direction and connected to the top of the first support rod (111); a first travel switch (12) connected to the first connecting rod (112), wherein a contact of the first travel switch (12) is arranged opposite to the trolley guardrail (34), and the first travel switch (12) is also used for being electrically connected to the main control module (33); wherein the horizontal distance between the contact of the first travel switch (12) and the trolley guardrail (34) is equal to the distance between the fume circulation hood (32) and the trolley guardrail (34); Wherein, the displacement detection module (20) comprises: A second bracket (21) includes a second support rod (211), wherein the second support rod (211) is arranged in a vertical direction and connected to the middle frame (30); a third bracket (22), comprising a second connecting rod (221), the second connecting rod (221) being arranged in a horizontal direction and connected to the rear of the flue gas circulation cover (32), and a contact plate (24) being arranged on the second connecting rod (221); A second travel switch (23) is connected to the second support rod (211), the contact of the second travel switch (23) is arranged opposite to the contact plate (24), and the second travel switch (23) is also used to be electrically connected to the main control module (33).

2. The sintering machine flue gas circulation cover protection device according to claim 1, characterized in that: The horizontal distance between the contact point of the second travel switch (23) and the contact plate (24) is equal to the maximum allowable displacement of the fume circulation hood (32).

3. The sintering machine fume circulation hood protection device according to claim 1, characterized in that: The contact plate (24) and the second connecting rod (221) are connected by bolts (25).

4. A sintering machine, characterized in that: include: Trolley body (31); Smoke recirculation hood (32); Main control module (33); as well as According to the sintering machine flue gas circulation hood protection device as described in any one of claims 1 to 3, the trolley body (31) is located above the middle skeleton (30) of the sintering machine, a trolley guardrail is provided on the trolley body (31), the flue gas circulation hood (32) is provided on the outside of the trolley guardrail (34), the main control module (33) is used to control the switch of the trolley body (31), and the deformation detection module (10) and the displacement detection module (20) are electrically connected to the main control module (33).

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