Tool for plugging tuyere

Abstract

The utility model relates to the field of metal smelting, and discloses a tuyere plugging tool which comprises a push rod and a plugging rake (1) fixedly connected to the top end of the push rod. The face, opposite to the push rod, of the blocking rake (1) is a plane, the blocking rake (1) is round, and the center of the round blocking rake (1) is located on the axis of the push rod. The push rod is formed by connecting a plurality of connecting rods (2) end to end. The tuyere plugging tool can quickly and reliably seal a tuyere, and can adapt to operation in a narrow space.

Description

Technical Field

[0001] The utility model relates to the field of metal smelting, in particular to a tuyere blocking tool. Background Art

[0002] Blast furnace wind stop refers to stopping the air supply to the blast furnace during the smelting process. Blast furnace wind stop is usually for equipment maintenance, replacement of furnace lining or other necessary operations. Blast furnace wind stop is an important part of blast furnace production and operation. When the blast furnace wind is stopped, water cannon mud is needed to cover the gap of the tuyere to achieve the sealing effect of the tuyere.

[0003] At present, in order to meet the requirements of ultra-low emissions, dust hoods are added on both sides of the blast furnace to capture and filter particulate matter and harmful gases emitted by the blast furnace, thereby reducing pollution to the environment. However, after adding the dust hood, the operator cannot directly seal the tuyere, and needs to open a hole in the dust hood to allow space for the wind-off operation. However, after the sealing operation is completed, the dust hood needs to be restored. Therefore, the process of using this method to complete the blast furnace wind-off is very cumbersome, time-consuming and labor-intensive. Utility Model Content

[0004] In order to overcome the problem in the prior art that it is difficult to seal the air vent after adding a dust cover, the utility model provides an air vent blocking tool, which can quickly and reliably seal the air vent and can adapt to operations in narrow spaces.

[0005] In order to achieve the above-mentioned object, the utility model provides a vent plugging tool, which includes a push rod and a plugging rake fixedly connected to the top end of the push rod;

[0006] The surface of the blocking rake facing away from the push rod is set as a plane, and the blocking rake is set as a circle, and the center of the circular blocking rake is located on the axis of the push rod;

[0007] The push rod is configured by connecting a plurality of connecting rods end to end.

[0008] Preferably, two adjacent connecting rods are threadedly connected.

[0009] Preferably, the plugging rake is threadedly connected to the push rod.

[0010] Preferably, one end of the connecting rod is provided with a first nut, and the other end is provided with an external thread, and the external thread cooperates with the first nut to achieve the end-to-end connection of the connecting rod.

[0011] Preferably, the plugging rake is provided with a second nut or a screw matched with the first nut or the external thread.

[0012] Preferably, a guide groove is provided on a side of the blocking rake facing away from the push rod.

[0013] Preferably, a plurality of guide grooves are provided, and the plurality of guide grooves are arranged in a crisscross manner.

[0014] Preferably, the depth of the guide groove is not greater than 3 mm.

[0015] Preferably, the width of the guide groove is set to 10-20 mm.

[0016] According to the above technical scheme, the air outlet plugging tool of the present application uses the observation hole of the blowpipe to extend into the air outlet position to extrude the water cannon mud, so as to seal the air outlet. Specifically, the water cannon mud is first rolled into a ball, the diameter of the ball is smaller than the diameter of the observation hole of the blowpipe, so that the spherical water cannon mud can be first put into the blowpipe through the observation hole of the blowpipe, and roll down along the wall of the blowpipe to the air outlet position, then, the air outlet plugging tool is extended into the blowpipe through the observation hole of the blowpipe, and the length of the push rod is increased by splicing the connecting rod, so that the plugging rake can be extended into the air outlet position, so as to realize the extrusion of the water cannon mud at the air outlet, and the thickness of the water cannon mud is gradually reduced due to the extrusion, while the coverage area of ​​the air outlet is gradually increased, thereby realizing the sealing of the air outlet.

[0017] After completing the sealing, the operator retracts the air vent blocking tool. When encountering a connection position between two adjacent connecting rods, the operator can disassemble the connection position so that the longer push rod can be disassembled into a shorter connecting rod to adapt to operations in a small space.

[0018] Since the air vent plugging tool is extended into the air vent through the observation hole of the blowpipe, and the observation hole of the blowpipe is set in a circular shape, the plugging rake is set in a circular shape so as to obtain the maximum working area while ensuring that the plugging rake passes through the observation hole of the blowpipe smoothly. A larger working area is very conducive to the plugging rake squeezing the water cannon mud, which can effectively improve the working efficiency of the air vent plugging tool when sealing the air vent.

[0019] The center of the circular plugging rake is located on the axis of the push rod, so that when the operator controls the plugging rake, the force applied by the operator can act on the center of the plugging rake, which greatly improves the balance of the plugging rake during operation and is beneficial to improving the sealing effect of the air outlet plugging tool on the air outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a tool for blocking air vents.

[0021] Description of Reference Numerals

[0022] 1 plugging rake 2 connecting rod

[0023] 3First nut4External thread DETAILED DESCRIPTION

[0024] In the present invention, unless otherwise stated, directional words such as "away from, up, down, sideways, both ends" generally refer to the orientation of the term in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term.

[0025] See also Figure 1 The air vent blocking tool comprises a push rod and a blocking rake 1 fixedly connected to the top of the push rod;

[0026] The side of the plugging rake 1 facing away from the push rod is set to be a plane, and the plugging rake 1 is set to be circular, and the center of the circular plugging rake 1 is located on the axis of the push rod;

[0027] The push rod is configured by connecting a plurality of connecting rods 2 end to end.

[0028] Through the implementation of the above technical solution, the air outlet plugging tool of the present application uses the observation hole of the blowpipe to extend into the air outlet position to squeeze the water cannon mud, so as to seal the air outlet. Specifically, the water cannon mud is first rolled into a ball, and the diameter of the ball is smaller than the diameter of the observation hole of the blowpipe, so that the spherical water cannon mud can be first put into the blowpipe through the observation hole of the blowpipe, and roll down along the wall of the blowpipe to the air outlet position, and then, the air outlet plugging tool is extended into the blowpipe through the observation hole of the blowpipe, and the length of the push rod is increased by splicing the connecting rod 2, so that the plugging rake 1 can be extended into the air outlet position, so as to realize the squeezing of the water cannon mud at the air outlet, and the thickness of the water cannon mud is gradually reduced due to squeezing, and the coverage area of ​​the air outlet is gradually increased, thereby realizing the sealing of the air outlet.

[0029] After completing the sealing, the operator retracts the air vent blocking tool. When encountering a connection position between two adjacent connecting rods 2, the operator can disassemble the connection position so that the longer push rod can be disassembled into the shorter connecting rod 2 to adapt to the operation in a small space.

[0030] Since the air vent plugging tool is extended into the air vent through the observation hole of the blowpipe, and the observation hole of the blowpipe is set in a circular shape, the plugging rake 1 is set in a circular shape so as to obtain the maximum working area while ensuring that the plugging rake 1 passes through the observation hole of the blowpipe smoothly. The larger working area is very conducive to the plugging rake 1 squeezing the water cannon mud, which can effectively improve the working efficiency of the air vent plugging tool when sealing the air vent.

[0031] The center of the circular plugging rake 1 is located on the axis of the push rod, so that when the operator controls the plugging rake 1, the force applied by the operator can act on the center of the plugging rake 1, which greatly improves the balance of the plugging rake 1 during operation and is beneficial to improving the sealing effect of the air outlet plugging tool on the air outlet.

[0032] In this embodiment, preferably, two adjacent connecting rods 2 are threadedly connected.

[0033] The two connecting rods 2 are connected by threads, which can conveniently and effectively realize the splicing and disassembly of the connecting rods 2. Moreover, when splicing, the threads at the connection position are tightened, so when the air vent plugging tool is used, the multiple connecting rods 2 will not rotate relative to each other, ensuring the stability of the air vent plugging tool during operation, so that the operator can control the plugging rake 1 at its end at will by turning the push rod, thereby improving work efficiency.

[0034] In this embodiment, preferably, the plugging rake 1 is threadedly connected to the push rod.

[0035] The plugging rake 1 and the push rod are arranged to be threadedly connected, so that the plugging rake 1 and the push rod are detachably connected. When different air outlets require plugging rakes 1 of different sizes, the plugging rakes 1 can be replaced to achieve sealing of different air outlets.

[0036] Moreover, the air vent blocking tool is also very convenient to store after use, and each part can be disassembled separately for easy storage.

[0037] In this embodiment, preferably, one end of the connecting rod 2 is provided with a first nut 3 , and the other end is provided with an external thread 4 , and the external thread 4 cooperates with the first nut 3 to achieve the end-to-end connection of the connecting rod 2 .

[0038] The first end of each connecting rod 2 is set as a first nut 3, and the second end is set as an external thread 4. Therefore, when the push rod needs to be spliced, it is only necessary to tighten the first end of the previous connecting rod 2 with the second end of the next connecting rod 2. Similarly, multiple connecting rods 2 can be connected end to end, thereby extending the length of the push rod.

[0039] In this embodiment, preferably, the plugging rake 1 is provided with a second nut or a screw matched with the first nut 3 or the external thread 4 .

[0040] The push rod formed by connecting multiple connecting rods 2 end to end also has two ends that can be connected by threads like the connecting rod 2, one end is a first nut 3, and the other end is an external thread 4. The blocking rake 1 can cooperate with the first nut 3 or the external thread 4 to achieve a threaded connection with the push rod, and a reliable connection between the push rod and the blocking rake 1 can be achieved by tightening the thread, avoiding relative rotation between the push rod and the blocking rake 1, so that the operator can more reliably control the blocking rake 1 by controlling the push rod.

[0041] In this embodiment, preferably, a guide groove is provided on a side of the plugging rake 1 facing away from the push rod.

[0042] During use, the side of the blocking rake 1 facing away from the push rod applies pressure to the water cannon mud to cause the water cannon mud to deform. By providing a guide groove, when the water cannon mud is deformed, the thicker water cannon mud located at the center of the spherical water cannon mud can move to the edge through the guide groove, making the operation more labor-saving.

[0043] In this embodiment, preferably, a plurality of guide grooves are provided, and the plurality of guide grooves are arranged in a crisscross manner.

[0044] By setting up multiple guide grooves, the water cannon mud can quickly enter the guide grooves nearby and move from the guide grooves to the outer edge, so that the spherical water cannon mud can be flattened quickly, thereby improving the operator's extrusion efficiency of the water cannon mud and making the operator's operation more labor-saving.

[0045] In this embodiment, preferably, the depth of the guide groove is not greater than 3 mm.

[0046] In this embodiment, preferably, the width of the guide groove is set to 10-20 mm.

[0047] The width of the guide groove is set to 10-20mm, so that the water cannon mud has less resistance when flowing in the guide groove. At the same time, the depth of the guide groove is set smaller to avoid excessive water cannon mud remaining in the guide groove, which can save the cost of using the water cannon mud.

[0048] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0049] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0050] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A vent blocking tool, characterized in that: The air vent blocking tool comprises a push rod and a blocking rake (1) fixedly connected to the top end of the push rod; The surface of the plugging rake (1) facing away from the push rod is arranged as a plane, the plugging rake (1) is arranged as a circle, and the center of the circle plugging rake (1) is located on the axis of the push rod; The push rod is configured by connecting a plurality of connecting rods (2) end to end.

2. The air vent blocking tool according to claim 1, characterized in that: Two adjacent connecting rods (2) are threadedly connected.

3. The air vent blocking tool according to claim 2, characterized in that: The plugging rake (1) is threadedly connected to the push rod.

4. The air vent blocking tool according to claim 3, characterized in that: One end of the connecting rod (2) is provided with a first nut (3), and the other end is provided with an external thread (4); the external thread (4) cooperates with the first nut (3) to achieve the end-to-end connection of the connecting rod (2).

5. The air vent blocking tool according to claim 4, characterized in that: The plugging rake (1) is provided with a second nut or a screw rod which cooperates with the first nut (3) or the external thread (4).

6. The air vent blocking tool according to claim 1, characterized in that: A guide groove is arranged on the side of the plugging rake (1) facing away from the push rod.

7. The air vent blocking tool according to claim 6, characterized in that: A plurality of guide grooves are provided, and the plurality of guide grooves are arranged in a crisscross pattern.

8. The air vent blocking tool according to claim 7, characterized in that: The depth of the guide groove is not greater than 3 mm.

9. The air vent blocking tool according to claim 8, characterized in that: The width of the guide groove is set to 10-20 mm.

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