Connecting assembly of YZB4030 type hydraulic tapping machine of blast furnace

Abstract

The utility model provides a blast furnace YZB4030 type hydraulic tapping machine connecting assembly which comprises a connecting body, a hollow cavity is formed in the connecting body in a penetrating mode in the length direction, the hollow cavity sequentially comprises a tapping machine connecting channel, a water vapor channel and a drill rod connecting channel, the tapping machine connecting channel is matched with a tapping machine vibrating rod in a threaded connection mode, and the water vapor channel is communicated with the drill rod connecting channel. The drill rod connecting channel is in threaded connection fit with a drill rod, and a tapping machine connecting limiting part is arranged on the outer portion of the connecting body around the periphery of the connecting body. The device has the remarkable advantages of simple structure, lightness, convenience, low manufacturing cost, reusability and the like; in the taphole drilling operation of the YZB4030 type hydraulic tapping machine of the blast furnace, the consumption of a drill rod can be effectively reduced, the difficulty of taphole drilling is remarkably reduced, and then the oxygen burning frequency of taphole drilling is reduced; meanwhile, the labor intensity of workers in front of the blast furnace is relieved, the safety risk is reduced, and therefore cost reduction and efficiency improvement of blast furnace ironmaking are powerfully promoted.

Description

Technical Field

[0001] This utility model relates to the field of connecting parts for blast furnace hydraulic tapping machines, specifically to a connecting assembly for a YZB4030 type blast furnace hydraulic tapping machine. Background Technology

[0002] The blast furnace tapping machine is a crucial piece of equipment used during the blast furnace tapping process to open the taphole and ensure the smooth discharge of slag and iron from the blast furnace. Essentially, it is a long-rod hydraulic rock drill installed in a cantilevered configuration, capable of rotation, forward movement, and reversal. The specific operating procedure is as follows: The operator first inserts the drill rod with the drill bit into the taphole sleeve, precisely aligning it with the center line of the taphole, and then starts the hydraulic rock drill. After starting, the hydraulic rock drill is decelerated by a gear reducer, which in turn drives the drill rod to rotate, causing the drill bit to advance into the taphole. During drilling, the propulsion mechanism is intermittently activated to continuously advance the drilling mechanism, allowing the drill bit to gradually penetrate deeper into the taphole. When the drill bit reaches the red dot position, the reverse switch of the propulsion mechanism is operated to change the rotation direction of the motor, and the sliding trolley pulls the drill bit out of the taphole. The drill rod connecting sleeve, as an important component of the blast furnace tapping machine, primarily connects to the drill rod. However, the existing YAB4030 hydraulic opening machine is equipped with a bayonet drill rod connection method when it leaves the factory.

[0003] During blast furnace production, using the YAB4030 hydraulic taphole opener consumes at least one drill rod and one drill bit for each batch of iron produced. This results in substantial monthly costs for drill rods and drill bits. Furthermore, the frequent use of oxygen-fired taphole opening methods leads to numerous difficulties in taphole maintenance and increases the consumption of oxygen pipes and oxygen.

[0004] Repeated observations during the operation of the drilling machine revealed that when the machine and drill rod are in the forward position, using a bayonet connection, the front assembly and drill rod are tightly connected, and there is sufficient atomized water and compressed air flowing into the drill rod channel. However, once the iron hole is drilled through, the drill rod begins to retract, creating a gap of about 5cm between the front assembly and the drill rod. This results in a severe shortage of atomized water and compressed air in the channel. In other words, the pressure of the atomized water and compressed air sprayed outward from the drill bit is insufficient to effectively prevent slag and iron from flowing out of the iron hole channel, ultimately causing the drill bit and drill rod to become stuck with the slag and iron, preventing smooth withdrawal. At this point, only the outward pulling force of the drilling machine can break the threaded connection between the drill bit and drill rod, leaving the drill bit inside the channel.

[0005] To address these issues, we propose a connecting assembly for a YZB4030 blast furnace hydraulic tapping machine to effectively solve the aforementioned technical problems in the existing technology. Utility Model Content

[0006] The purpose of this utility model is to provide a connecting component for a YZB4030 blast furnace hydraulic tapping machine to solve the above-mentioned technical problems existing in the prior art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a connecting assembly for a YZB4030 type hydraulic tapping machine for a blast furnace, comprising a connecting body, wherein a hollow cavity is provided through the connecting body along its length direction, the hollow cavity comprising a tapping machine connecting channel, a water vapor channel and a drill rod connecting channel in sequence, the tapping machine connecting channel being threadedly connected to the tapping machine vibrating rod, the drill rod connecting channel being threadedly connected to the drill rod, and a tapping machine connecting limiting part being provided around the outer periphery of the connecting body.

[0008] Furthermore, the center lines of the opening machine connecting channel, the water vapor channel, and the drill pipe connecting channel are collinear to ensure smooth flow of water and air.

[0009] Furthermore, the upper and lower outer surfaces of the connecting body have an outwardly convex arc-shaped structure.

[0010] Furthermore, the ends of the front and rear ends of the connecting body are chamfered.

[0011] Furthermore, the connecting body is a component that has been integrally machined and heat-treated.

[0012] Furthermore, the connecting body is a high-temperature resistant and corrosion-resistant alloy material structure.

[0013] Compared with existing technologies, the above technical solution has the following advantages: it has significant advantages such as simple structure, lightweight and convenient operation, low manufacturing cost and reusability; in the taphole opening operation of the YZB4030 hydraulic taphole opening machine in blast furnace, it can effectively reduce the consumption of drill rods, significantly reduce the difficulty of taphole opening, and thus reduce the frequency of oxygen burning at the taphole; at the same time, it also reduces the labor intensity of blast furnace workers and reduces safety risks, thereby powerfully promoting cost reduction and efficiency improvement in blast furnace ironmaking. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the connection structure between the main body 1 and the drill pipe 2;

[0016] Figure 2 This is a structural diagram of the connecting body 1;

[0017] Figure 3 It corresponds Figure 2 AA section view in the image.

[0018] Explanation of reference numerals in the attached drawings: 1. Connecting body; 11. Hollow cavity; 111. Opening machine connecting channel; 112. Water vapor channel; 113. Drill rod connecting channel; 12. Opening machine connecting limiting part; 2. Drill rod. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0020] When a company's 2000㎡ high-grade blast furnace was put into operation, it selected a YZB4030 hydraulic tapping machine, which used a traditional bayonet connection method with the drill rod. However, several problems arose during blast furnace operation. Specifically, each furnace of iron produced consumed at least one drill rod and one drill bit, with 10-12 furnaces tapped daily. Detailed statistics showed that the monthly cost of drill bits and drill rods reached approximately 100,000 yuan. Furthermore, frequent oxygen-fired tapping caused difficulties in tapping maintenance and increased oxygen consumption. Further observation revealed a severe shortage of atomized water and compressed air supply within the tapping channel during the drilling and subsequent withdrawal of the drill rod. In other words, the pressure of the atomized water and compressed air sprayed from the drill bit was insufficient to prevent slag and iron from flowing into the tapping channel, directly hindering the smooth withdrawal of the drill bit and drill rod. Ultimately, the only way to break the drill bit from the threaded connection between the drill bit and the drill rod was to use the force of the opening machine to pull it outwards, leaving the drill bit inside the hole and further aggravating equipment wear and production costs.

[0021] To address the problems existing in the prior art, this utility model provides a connecting assembly for a YZB4030 blast furnace hydraulic tapping machine. The following is a detailed description of this utility model with reference to the accompanying drawings.

[0022] See Figures 1-3As shown, the technical solution adopted in this specific embodiment is: a connecting assembly for a YZB4030 type hydraulic tapping machine for blast furnaces, including a connecting body 1 for connecting the tapping machine and the drill rod 2. The connecting body 1 has a hollow cavity 11 extending through its length. The hollow cavity 11 sequentially includes a tapping machine connecting channel 111, a steam channel 112, and a drill rod connecting channel 113. The tapping machine connecting channel 111 is tightly connected to the tapping machine vibrating rod (not shown in the figure) via threads. The tapping machine connecting channel 111 has an internal thread that mates with the tapping machine vibrating rod. The drill rod connecting channel 113 is tightly connected to the drill rod 2 via threads. The drill rod connecting channel 113 also has an internal thread that mates with the drill rod 2. Furthermore, a tapping machine connecting limiting part 12 is provided around the outer periphery of the connecting body 1. The connecting body 1 is made of a special alloy material that is resistant to high temperatures and corrosion, and the threads have been hardened to enhance their wear resistance and deformation resistance.

[0023] In addition, the upper and lower exterior of the connecting body 1 has an outward convex arc structure, and the ends at both ends are chamfered. The connecting body 1 is made by integral cutting and heat treatment.

[0024] It should be specifically noted that the center lines of the opening machine connecting channel 111, the water vapor channel 112, and the drill rod connecting channel 113 are arranged in a collinear manner to ensure smooth flow of water and air.

[0025] After installing the connecting component of this utility model, a sufficient supply of atomized water and compressed air can be maintained during the advance of drill rod 2, ensuring drilling efficiency. In addition, at the critical moment when the iron hole is drilled through and drill rod 2 is retracted, the pressure of the medium in the duct is maintained due to the tightness of the threaded connection, effectively preventing the inflow of slag and iron, avoiding the risk of drill rod 2 and drill bit getting stuck. This not only reduces the frequency of replacement of drill rod 2 and drill bit due to physical damage, but also fundamentally eliminates the necessity of relying on oxygen-burning operations, greatly reducing safety risks, reducing additional oxygen consumption and cost expenditures, and saving enterprises a lot of money every year.

[0026] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and 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, and therefore should not be construed as a limitation of this utility model.

[0027] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A connecting assembly for a YZB4030 type hydraulic tapping machine for a blast furnace, characterized in that, The device includes a connecting body (1), which has a hollow cavity (11) extending through it along its length. The hollow cavity (11) includes a hole-opening machine connecting channel (111), a water vapor channel (112), and a drill rod connecting channel (113). The hole-opening machine connecting channel (111) is threadedly connected to the hole-opening machine vibrating rod, and the drill rod connecting channel (113) is threadedly connected to the drill rod (2). The connecting body (1) has a hole-opening machine connecting limiting part (12) around its outer periphery.

2. The connecting assembly for the YZB4030 hydraulic tapping machine of a blast furnace according to claim 1, characterized in that, The center lines of the opening machine connecting channel (111), the water vapor channel (112), and the drill rod connecting channel (113) are collinear to ensure smooth flow of water and air.

3. The connecting assembly for the YZB4030 hydraulic tapping machine of a blast furnace according to claim 1, characterized in that, The upper and lower exterior of the connecting body (1) has an outwardly convex arc-shaped structure.

4. The connecting assembly for the YZB4030 hydraulic tapping machine of a blast furnace according to claim 1, characterized in that, The ends of the front and rear ends of the connecting body (1) are chamfered.

5. The connecting assembly for the YZB4030 hydraulic tapping machine of a blast furnace according to claim 1, characterized in that, The connecting body (1) is a high-temperature resistant and corrosion-resistant alloy material structure.

6. The connecting assembly for the YZB4030 hydraulic tapping machine of a blast furnace according to claim 1, characterized in that, The connecting body (1) is a component that has been integrally machined and heat-treated.

Images