Blast furnace griddle device

Abstract

The utility model relates to a blast furnace griddle device which comprises a conveying trough and a conveying auger, one end of the conveying trough is closed, the other end of the conveying trough is open, the conveying auger is arranged in the conveying trough and extends out of the open position, one end of the conveying auger is provided with a driving mechanism, the other end of the conveying auger is provided with a cantilever supporting seat, and the cantilever supporting seat is fixedly connected to the open position of the conveying trough. The driving mechanism is arranged at the closed end of the conveying groove, a movable support is arranged below the driving mechanism, and the movable support is provided with a driving device and a locking device and can freely advance and be fixed; the cantilever supporting seat is provided with a rotating part and a fixing part, the rotating part is connected with the conveying auger, the fixing part is fixedly connected with the conveying groove through a connecting frame, and the free end of the fixing part is arranged to be a spine body so that the spine body can be conveniently inserted into residual materials in a blast furnace to conduct griddle operation. The maintenance frequency is reduced, the production efficiency is improved, and the service life of the whole machine is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of blast furnace maintenance equipment, specifically a blast furnace skimming device. Background Technology

[0002] With increasingly stringent environmental protection standards, the steel smelting industry is also conducting more frequent blast furnace maintenance in order to meet environmental requirements. The start-up and shutdown of blast furnaces have a significant impact on blast furnace refractory materials, which can cause damage and shorten the service life of the refractory materials. It is necessary to repair and restore the furnace shape of the blast furnace lining refractory materials from time to time to ensure the stable operation of the blast furnace. During blast furnace maintenance, the coke-filling method is used to shut down the furnace. This method involves adding wet coke from the top of the furnace to control the temperature. The furnace is shut down after all the iron-containing material above the tuyeres has been reduced. This method is relatively safe. However, after shutdown, a large amount of coke remains in the blast furnace. This coke needs to be removed from the blast furnace and the furnace needs to be quickly and safely cleared before maintenance and repair work can be carried out. The traditional cleaning method is manual, which is inefficient and has a poor working environment. Workers need to work in high temperatures, which can easily lead to burns and other accidents. Chinese patent CN220887574U discloses an automatic blast furnace clearing machine that uses a motor to drive the rotation of a spiral blade. The spiral blade and the conveying cylinder work together to transfer the furnace charge. However, the spiral blade in this patent is only supported by the motor end. During the clearing operation, the spiral blade shakes significantly under stress, resulting in severe blade wear and frequent damage to the motor end bearing, which affects work efficiency. Therefore, to address the above problems, a blast furnace clearing device that can operate stably is proposed. Utility Model Content

[0003] The purpose of this invention is to provide a blast furnace skimmer that can operate stably, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A blast furnace grate-over device includes a conveying trough and a conveying auger. The conveying auger is disposed in the conveying trough and its length is greater than the length of the conveying trough. A drive mechanism is provided at one end of the conveying auger and a cantilever support is provided at the other end. The drive mechanism and the cantilever support are both fixedly connected to the conveying trough. The top of the conveying trough and the cantilever end are open. The cantilever support is fixed to the cantilever end by a connecting frame.

[0006] The aforementioned blast furnace grate device, wherein the cantilever support base further includes a rotating part and a fixed part, the rotating part being connected to the conveying auger, and the fixed part being fixedly connected to the conveying trough via the connecting frame.

[0007] In the above-mentioned blast furnace grate-over device, the free end of the fixed part is configured as a spike, which is a cone or a pyramid.

[0008] The aforementioned blast furnace grate-over device includes a rotating part comprising a connecting shaft and a bearing housing. The connecting shaft is mounted in the bearing housing via a bearing, and a connecting flange is provided at the end of the connecting shaft to be fixedly connected to the conveying auger. The bearing housing and the fixing part are fixedly connected.

[0009] The above-mentioned blast furnace grate device includes a connecting frame comprising a connecting seat, a reinforcing hoop, and a connecting arm. The reinforcing hoop is located outside the conveying trough and its shape is adapted to the conveying trough. Two connecting seats are symmetrically arranged at the two free ends of the reinforcing hoop. Two connecting arms are symmetrically arranged with one end fixed to the connecting seat and the other end fixed to the fixing part.

[0010] The connecting arm of the aforementioned blast furnace grate is made of round steel or round tube with a diameter greater than 25mm.

[0011] The above-mentioned blast furnace grate-over device includes a conveying trough comprising a U-shaped trough. The top of the U-shaped trough is open, and one end of its two ends along the axial direction is closed while the other end is open. A reinforcing plate is provided at the top open end. A discharge port is provided at the bottom of the closed end of the U-shaped trough. A corresponding baffle is provided above the discharge port. Two cold water pipes are symmetrically arranged above the reinforcing plate.

[0012] In the aforementioned blast furnace grate device, the length of the discharge port along the axial direction is greater than two leads of the conveying auger spiral blades, and the length of the baffle along the axial direction is greater than the length of the discharge port.

[0013] In the above-mentioned blast furnace grate-over device, the length of the cold water pipe is greater than the length of the conveying trough, and the two cold water pipes extend to the end of the conveying auger and are connected. Multiple water spray nozzles are provided along the cold water pipes, and the water spray nozzles are symmetrically arranged to spray water onto the conveying auger.

[0014] The aforementioned blast furnace grate device also includes a movable support, which is located below the end of the conveying trough. The movable support is equipped with a drive device, casters, and a locking device. The drive device is electrically connected to a sensor located at the opening of the conveying trough.

[0015] The beneficial effects of adopting the above technical solution are:

[0016] This utility model provides a blast furnace squeegee device, including a conveying trough and a conveying auger. One end of the conveying trough is closed, while the other end is open. The conveying auger is installed inside the conveying trough and extends from the open end. A drive mechanism is installed at one end of the conveying auger, and a cantilever support is installed at the other end. The cantilever support is fixedly connected to the open end of the conveying trough and includes a rotating part and a fixed part. The rotating part is connected to the conveying auger to ensure its free rotation. The fixed part is fixedly connected to the conveying trough, and its free end is designed as a spike for easy insertion into the remaining material inside the blast furnace, ensuring the stability of the end of the conveying trough. The cantilever support reduces the impact of the conveying trough's operation. The swaying amplitude of the conveying auger within the conveying trough, while ensuring the auger blades are fully exposed, guarantees efficient furnace dismantling operations. The drive mechanism is located at the closed end of the conveying trough, with a movable support at its bottom. The movable support includes a drive device and a locking device. The drive device is electrically connected to a sensor at the end of the conveying trough. Based on sensor feedback, the drive device drives the movable support to move or lock, reducing manual operation. This application has a reasonable structure, is easy to operate, ensures stable operation of the conveying auger within the conveying trough, reduces maintenance frequency, improves production efficiency, and reduces manual operation, allowing operators to work away from high-temperature environments. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a front view structural diagram of the present invention;

[0019] Figure 3 This is a top view of the structure of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the cantilever support base of this utility model.

[0021] In the diagram: 1. Conveying trough; 1-1. U-shaped trough; 1-2. Reinforcing plate; 1-3. Discharge port; 1-4. Cold water pipe; 1-5. Baffle; 2. Conveying auger; 3. Drive mechanism; 4. Cantilever support; 4-1. Connecting frame; 4-1-1. Connecting seat; 4-1-2. Reinforcing hoop; 4-1-3. Connecting arm; 4-2. Rotating part; 4-2-1. Connecting shaft; 4-2-2. Bearing seat; 4-3. Fixed part; 5. Moving bracket. Detailed Implementation

[0022] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be clearly and completely described below in conjunction with specific embodiments.

[0023] like Figures 1 to 4The blast furnace auger device shown includes a conveying trough 1 and a conveying auger 2. The length of the conveying auger 2 is greater than the length of the conveying trough 1. One end of the conveying trough 1 is closed and the other end is open. The conveying auger 2 is installed inside the conveying trough 1 and extends out from the open end. Its extension length is two or more spiral blade leads to ensure the amount of material being hauled into the conveying trough 1. A drive mechanism 3 is provided at one end of the conveying auger 2 and a cantilever support 4 is provided at the other end. Both the drive mechanism 3 and the cantilever support 4 are fixedly connected to the conveying trough 1. The cantilever support 4 is fixed to the cantilever end of the conveying trough 1 by a connecting frame 4-1. See also Figure 2 The cantilever support 4 also includes a rotating part 4-2 and a fixed part 4-3. The rotating part 4-2 is fixedly connected to the conveying auger 2 by bolts, and the fixed part 4-3 is fixedly connected to the conveying trough 1 by a connecting frame 4-1. The free end of the fixed part 4-3 is set as a spike, which is a cone or pyramid for easy insertion into the residual material in the blast furnace; see also Figure 4 The rotating part 4-2 includes a connecting shaft 4-2-1 and a bearing housing 4-2-2. The connecting shaft 4-2-1 is mounted in the bearing housing 4-2-2 via a bearing and can rotate freely. A connecting flange is provided at the end of the connecting shaft 4-2-1, and the connecting shaft 4-2-1 is fixedly connected to the conveying auger 2 via the connecting flange. The bearing housing 4-2-2 and the fixing part 4-3 are fixedly connected. The fixing part 4-3 is located at the outer end of the bearing housing 4-2-2 and can be integrally formed or welded. The connecting frame 4-1 includes a connecting seat 4-1-1, a reinforcing hoop 4-1-2, and... The connecting arm 4-1-3 and the reinforcing hoop 4-1-2 are set on the outside of the conveying trough 1. Their shape is adapted to the conveying trough 1 to strengthen the end of the conveying trough 1 and prevent it from being squeezed and deformed. The two connecting seats 4-1-1 are symmetrically set on the two free ends of the reinforcing hoop 4-1-2. The two connecting arms 4-1-3 are respectively set on the two connecting seats 4-1-1. One end is fixed on the connecting seat 4-1-1 and the other end is fixed on the fixing part 4-3. The connecting arm 4-1-3 is made of round steel or round tube with a diameter greater than 25mm to prevent it from deforming and shifting.

[0024] like Figures 1 to 3 As shown, the conveying trough 1 includes a U-shaped trough 1-1. The top of the U-shaped trough 1-1 is open, and one end of its two ends along the axial direction is closed while the other end is open. A reinforcing plate 1-2 is provided at the top open end. A discharge port 1-3 is provided at the bottom of the closed end of the U-shaped trough 1-1. A corresponding baffle 1-5 is provided above the discharge port 1-3. Two cold water pipes 1-4 are symmetrically arranged above the reinforcing plate 1-2. The length of the discharge port 1-3 along the axial direction is greater than two leads of the spiral blades of the conveying auger 2. The baffle 1-5 is U-shaped and its opening direction is the same as that of the conveying trough 1. The length of the baffle 1-5 along the axial direction is greater than the length of the discharge port. A material level sensor is provided on the baffle 1-5. When too much waste material accumulates, the drive mechanism 3 decelerates or stops.

[0025] Cold water pipes 1-4 are symmetrically arranged on both sides of the upper port of the conveying trough 1. The length of the cold water pipes 1-4 is greater than the length of the conveying trough 1. The two cold water pipes extend to the end of the conveying auger 2 and are connected. Multiple water spray nozzles are arranged along the cold water pipes 1-4. The water spray nozzles are symmetrically arranged to spray water onto the conveying auger 2 to cool it down when the conveying auger 2 is working.

[0026] A movable support 5 is provided below the drive mechanism 3. The movable support 5 is fixed to the closed end of the conveying trough 1. The movable support 5 is equipped with a drive device, casters and a locking device. The drive device is electrically connected to the material level sensor provided at the open end of the conveying trough 1. When the sensor detects that the remaining material at the end has been cleared, the drive device is started to move forward. After moving to the new work position, the locking device locks the casters to prevent it from shifting.

[0027] Working process: Insert the cantilever support 4, which is located at the end of the conveying trough 1, into the blast furnace tuyeres. Start the conveying auger 2. The conveying auger 2 rotates and conveys the remaining material at the end of the conveying trough 1 to the outside of the blast furnace, and discharges it from the discharge port 1-3 at the bottom of the conveying trough 1. The moving bracket 5 is electrically connected to the material sensor located at the opening of the conveying trough 1. After the sensor detects that the material is empty, the moving bracket 5 drives the whole machine to move automatically to the new working position to continue the furnace dismantling operation.

[0028] This article uses specific embodiments to illustrate the principles and implementation methods of this utility model in detail. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. Those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features; however, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A blast furnace skimmer device, characterized in that: It includes a conveying trough (1) and a conveying auger (2). The conveying auger (2) is set in the conveying trough (1) and its length is greater than the length of the conveying trough (1). One end of the conveying auger (2) is provided with a driving mechanism (3) and the other end is provided with a cantilever support (4). The driving mechanism (3) and the cantilever support (4) are both fixedly connected to the conveying trough (1). The top of the conveying trough (1) and the cantilever end are open. The cantilever support (4) is fixed to the cantilever end by a connecting frame (4-1).

2. The blast furnace skimmer according to claim 1, characterized in that: The cantilever support (4) also includes a rotating part (4-2) and a fixing part (4-3). The rotating part (4-2) is connected to the conveying auger (2), and the fixing part (4-3) is fixedly connected to the conveying trough (1) through the connecting frame (4-1).

3. A blast furnace skimmer according to claim 2, characterized in that: The free end of the fixing part (4-3) is configured as a spike, which is a cone or a pyramid.

4. A blast furnace skimmer according to claim 2, characterized in that: The rotating part (4-2) includes a connecting shaft (4-2-1) and a bearing seat (4-2-2). The connecting shaft (4-2-1) is mounted in the bearing seat (4-2-2) by a bearing. The end of the connecting shaft (4-2-1) is provided with a connecting flange and is fixedly connected to the conveying auger (2). The bearing seat (4-2-2) and the fixing part (4-3) are fixedly connected.

5. A blast furnace skimmer according to claim 2, characterized in that: The connecting frame (4-1) includes a connecting seat (4-1-1), a reinforcing hoop (4-1-2), and a connecting arm (4-1-3). The reinforcing hoop (4-1-2) is located outside the conveying groove (1) and its shape is adapted to the conveying groove (1). The two connecting seats (4-1-1) are symmetrically arranged at the two free ends of the reinforcing hoop (4-1-2). The two connecting arms (4-1-3) are symmetrically arranged with one end fixed to the connecting seat (4-1-1) and the other end fixed to the fixing part (4-3).

6. A blast furnace skimmer according to claim 5, characterized in that: The connecting arm (4-1-3) is made of round steel or round tube with a diameter greater than 25mm.

7. A blast furnace skimmer according to claim 2, characterized in that: The conveying trough (1) includes a U-shaped trough (1-1). The top of the U-shaped trough (1-1) is open, and one end of its two ends along the axial direction is closed while the other end is open. A reinforcing plate (1-2) is provided at the top open. A discharge port (1-3) is provided at the bottom of the closed end of the U-shaped trough (1-1). A corresponding baffle (1-5) is provided above the discharge port (1-3). Two cold water pipes (1-4) are symmetrically arranged above the reinforcing plate (1-2).

8. A blast furnace skimmer according to claim 7, characterized in that: The length of the discharge port (1-3) along the axial direction is greater than two leads of the spiral blades of the conveying auger (2), and the length of the baffle (1-5) along the axial direction is greater than the length of the discharge port.

9. A blast furnace skimmer according to claim 7, characterized in that: The length of the cold water pipe (1-4) is greater than the length of the conveying trough (1). The two cold water pipes extend to the end of the conveying auger (2) and are connected. Multiple water spray nozzles are provided along the cold water pipe (1-4) and the water spray nozzles are symmetrically arranged to spray water onto the conveying auger (2).

10. A blast furnace skimmer according to claim 7, characterized in that: It also includes a movable support (5), which is located below the end of the conveying trough (1). The movable support (5) is equipped with a drive device, casters and a locking device. The drive device is electrically connected to a sensor located at the opening of the conveying trough (1).

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