Rotary opening and closing nozzle device

Abstract

The present application belongs to the technical field of hydraulic clay gun before furnace, and relates to a rotary opening and closing type gun nozzle device. The connecting piece is symmetrically arranged, and the rotary shaft can be interchanged left and right, which is suitable for equipment installation requirements in different directions, expands the application range of the device, and improves the versatility and flexibility of the equipment. The pull rod is assembled on the conical intermediate piece, which optimizes the operation layout, makes the operation of the maintenance personnel more convenient, effectively reduces the workload of maintenance operation, and further improves the equipment maintenance efficiency. By adopting the elliptical shaft hole structure, the jamming phenomenon that may occur during the rotation operation is effectively avoided, the installation difficulty of the rotary shaft is reduced, and the smooth rotation opening and closing action of the gun nozzle is ensured. The sheath is arranged on the pull rod bolt, which can effectively protect the pull rod thread part, avoid damage caused by high temperature washing, dust erosion and operation collision, and prolong the service life of the pull rod bolt.

Description

Technical Field

[0001] This invention belongs to the field of hydraulic mud gun technology, specifically relating to a rotary opening and closing nozzle device. Background Technology

[0002] In the blast furnace ironmaking process, the hydraulic mud gun is a core piece of specialized equipment for ensuring normal iron tapping and sealing the taphole. The mud-applying mechanism, as the core working component of the hydraulic mud gun for taphole sealing, has its nozzle directly responsible for the crucial function of sealing the taphole. During operation, the nozzle is in direct contact with high-temperature molten iron, enduring long-term high-temperature erosion and corrosion. Furthermore, after mud-applying operations, sintered mud easily accumulates inside, making it a frequently used, rapidly worn component requiring frequent maintenance, cleaning, and spare parts replacement. After each taphole sealing operation, the residual mud inside the nozzle must be cleaned promptly to ensure smooth subsequent operations. Therefore, the rationality of the nozzle's structural design, the ease of disassembly and replacement, and the simplicity of maintenance directly affect the continuity of blast furnace production and the overall efficiency of equipment maintenance.

[0003] Currently, most hydraulic mud cannon nozzles in the industry adopt a direct-connection assembly structure, such as... Figure 1 As shown, the nozzle and the conical intermediate part are mainly fixedly connected by a connecting pin and a pin hole. This traditional connection structure has many obvious defects in actual production applications. On the one hand, when cleaning the residual mud inside the nozzle, the structure limits operation to one direction from the front end of the nozzle inward. The operating space is small and the operating angle is limited, making the cleaning process extremely inconvenient and prone to incomplete cleaning and residual clumps, directly affecting the effect of subsequent mud removal and plugging operations. On the other hand, when the nozzle needs to be replaced due to wear and tear, the disassembly steps of the traditional direct connection structure are cumbersome and complex, requiring the disassembly of components such as the connecting pin one by one. This is not only time-consuming and labor-intensive, reducing maintenance efficiency, but also poses safety hazards such as component detachment during disassembly, resulting in poor safety and failing to meet the actual needs of modern metallurgical production for efficient equipment maintenance and safe operation.

[0004] In view of this, the present invention is hereby proposed. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a rotating opening and closing nozzle device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The present invention provides a rotary opening and closing nozzle device, including a nozzle and a conical intermediate component adapted to the nozzle. The nozzle includes a nozzle body and two first connecting plates symmetrically fixed on both sides of the nozzle body and close to the conical intermediate component and having slots. Each of the first connecting plates has an elliptical shaft hole at one end close to the conical intermediate component. The conical intermediate component includes a conical intermediate component body and two second connecting plates symmetrically fixed on both sides of the conical intermediate component body and close to the nozzle. Each second connecting plate has a circular shaft hole that matches the elliptical shaft hole at one end near the nozzle. It also includes a long rotating shaft, a short rotating shaft, and two tie rod bolts, each with a pull ring. The long rotating shaft passes through an elliptical shaft hole, a circular shaft hole, and a pull ring, which hinges a first connecting plate, a second connecting plate, and a tie rod bolt. The short rotating shaft passes through another circular shaft hole and another pull ring, which hinges another tie rod bolt to another second connecting plate. The other end of each tie rod bolt passes through the corresponding slot and is secured by a nut to the side of the first connecting plate away from the elliptical shaft hole.

[0007] Specifically, the first connecting plate includes a first upper connecting plate and a first lower connecting plate symmetrical to the first upper connecting plate. The area between the first upper connecting plate and the first lower connecting plate is a slot for accommodating tie rod bolts. Both the first upper connecting plate and the first lower connecting plate are provided with elliptical shaft holes on the side near the conical intermediate piece.

[0008] Specifically, the second connecting plate includes a second upper connecting plate and a second lower connecting plate symmetrical to the second upper connecting plate. Both the second upper connecting plate and the second lower connecting plate are provided with circular shaft holes on the side near the nozzle. The pull ring is set between the second upper connecting plate and the second lower connecting plate through a short rotating shaft.

[0009] Furthermore, the top of the short shaft is provided with a first stop, and the second upper connecting plate is provided with a second stop that matches the first stop.

[0010] Specifically, the long rotating shaft has multiple radially opened lubrication holes along its axial direction, and the shaft center of the long rotating shaft has a through hole with the lubrication holes connected in series.

[0011] Specifically, a first lubrication groove is provided circumferentially on the inner surface of the pull ring to facilitate the retention of lubricating substances.

[0012] Specifically, spacers are provided between the pull ring and the first connecting plate, and between the first connecting plate and the second connecting plate.

[0013] Specifically, a washer is provided between the nut and the first connecting plate, and a sleeve for protecting the thread of the bolt is fitted onto the end of the bolt that extends out of the nut.

[0014] Specifically, a second lubrication groove is provided circumferentially on the inner surface of the elliptical shaft hole to facilitate the retention of lubricating substances.

[0015] Specifically, the main body of the cannon nozzle has a stop on the side near the conical intermediate piece, and the main body of the conical intermediate piece has a boss on the side near the cannon nozzle that matches the stop.

[0016] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: This invention adopts a rotating shaft structure design to realize the rotating opening and closing function of the nozzle, which completely solves the problems of limited space and angle in the cleaning operation of traditional direct-connection nozzles. It facilitates the comprehensive and thorough cleaning of residual mud inside the nozzle, avoids the caking of residual mud affecting the effect of subsequent mud removal and clogging operations, and greatly simplifies the disassembly and assembly process of the nozzle, reduces the difficulty of replacing spare parts, and improves the efficiency of maintenance operations.

[0017] This invention adopts a tie rod bolt and nut assembly installation method to ensure a tight and reliable connection between the nozzle and the conical intermediate part. The assembly operation is convenient and effectively avoids the safety hazards such as loosening and falling off of parts during the disassembly and assembly process of traditional connecting pin structures. This improves the safety of equipment operation and ensures the safety of maintenance personnel.

[0018] The connectors of this invention feature a symmetrical arrangement, and the rotating shaft is interchangeable to accommodate different installation requirements, expanding the applicability of the device and enhancing its versatility and flexibility. This meets the installation and operation needs of hydraulic mud guns in various metallurgical blast furnaces. Assembling the tie rod on the conical intermediate piece optimizes the operating layout, making operation more convenient for maintenance personnel, effectively reducing maintenance workload, and further improving equipment maintenance efficiency, thus meeting the practical needs of modern metallurgical production for efficient equipment maintenance. The elliptical rotating shaft hole structure effectively avoids potential jamming during rotation, while reducing the installation difficulty of the rotating shaft, ensuring smooth opening and closing of the nozzle, and improving the operational stability and service life of the device. A protective sleeve on the tie rod bolt effectively protects the threaded portion of the tie rod, preventing damage from high-temperature erosion, dust corrosion, and operational collisions, extending the service life of the tie rod bolt, reducing spare parts wear costs, and further improving the economy and reliability of the device.

[0019] In summary, through the above structural design, this device effectively solves many defects of the existing technology, significantly improves the ease of maintenance, operational safety, structural stability and applicability of the nozzle device, can ensure the continuity of blast furnace production, reduce equipment maintenance costs, and meet the needs of modern metallurgical production for efficient, safe and stable operation. Attached Figure Description

[0020] The accompanying drawings are incorporated in and form part of this specification, and together with the description serve to explain the principles of the invention.

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a cannon nozzle device in the prior art; Figure 2 This is a schematic diagram of the nozzle device of the present invention; Figure 3 This is an exploded view of the short rotating shaft side of the nozzle device of the present invention; Figure 4 This is a top view of the nozzle device of the present invention; Figure 5 for Figure 4 A partial sectional view of AA along the long axis of rotation; Figure 6 for Figure 4 A partial sectional view of the BB axis along the short rotation.

[0023] Wherein: 1 is the nozzle; 1.1 is the nozzle body; 1.2 is the stop; 1.3 is the elliptical shaft hole; 1.4 is the first connecting plate; 2 is a conical intermediate component; 2.1 is the main body of the conical intermediate component; 2.2 is a boss; 2.3 is a circular shaft hole; 3 is the nut assembly; 3.1 is the sheath; 3.2 is the nut; 3.3 is the washer; 4 is the tie rod bolt; 4.1 is the pull ring; 4.2 is the screw; 4.3 is the first lubrication groove; 5 is the long rotating shaft; 5.1 is the lubrication hole; 6 is a short pivot; 7 is the spacer ring. Detailed Implementation

[0024] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples consistent with some aspects of the invention as detailed in the appended claims.

[0025] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Example

[0026] See Figure 2-6 As shown, this embodiment provides a rotary opening and closing nozzle device, including a nozzle 1 and a conical intermediate part 2 adapted to the nozzle 1. The nozzle 1 includes a nozzle body 1.1 and two first connecting plates 1.4 symmetrically fixed on both sides of the nozzle body 1.1 and close to the conical intermediate part 2 and having slots. Each of the first connecting plates 1.4 has an elliptical shaft hole 1.3 at one end close to the conical intermediate part 2. The conical intermediate component 2 includes a conical intermediate component body 2.1 and two second connecting plates symmetrically fixed on both sides of the conical intermediate component body 2.1 and close to the nozzle 1. Each second connecting plate has a circular shaft hole 2.3 that matches the elliptical shaft hole 1.3 at one end close to the nozzle 1. It also includes a long rotating shaft 5, a short rotating shaft 6, and two tie rod bolts 4, each with a pull ring 4.1. The long rotating shaft 5 passes through an elliptical shaft hole 1.3, a circular shaft hole 2.3, and a pull ring 4.1, so that a first connecting plate 1.4, a second connecting plate, and a tie rod bolt 4 are hinged together. The short rotating shaft 6 passes through another circular shaft hole 2.3 and another pull ring 4.1, so that another tie rod bolt 4 is hinged to another second connecting plate. The other end of each of the tie rod bolts 4 passes through the corresponding slot and is fixed by a nut 3.2 to the side of the first connecting plate 1.4 away from the elliptical shaft hole 1.3.

[0027] Specifically, the first connecting plate 1.4 includes a first upper connecting plate and a first lower connecting plate symmetrical to the first upper connecting plate. The area between the first upper connecting plate and the first lower connecting plate is a slot for accommodating the tie rod bolt 4. Both the first upper connecting plate and the first lower connecting plate are provided with elliptical shaft holes 2.3 on the side near the conical intermediate piece 2.

[0028] Specifically, the second connecting plate includes a second upper connecting plate and a second lower connecting plate symmetrical to the second upper connecting plate. Both the second upper connecting plate and the second lower connecting plate are provided with a circular shaft hole 2.3 on the side near the nozzle 1. The pull ring 4.1 is set between the second upper connecting plate and the second lower connecting plate through a short rotating shaft 6.

[0029] Furthermore, the top of the short rotating shaft 6 is provided with a first stop, and the second upper connecting plate is provided with a second stop that matches the first stop.

[0030] Specifically, the long rotating shaft 5 has a plurality of radially opened lubrication holes 5.1 in its axial direction, and the shaft center of the long rotating shaft 5 has a through hole with the lubrication holes 5.1 connected in series.

[0031] Specifically, a first lubrication groove 4.3 is provided circumferentially on the inner surface of the pull ring 4.1 to facilitate the retention of lubricating substances.

[0032] Specifically, spacer rings 7 are provided between the pull ring 4.1 and the first connecting plate 1.4, and between the first connecting plate 1.4 and the second connecting plate.

[0033] Specifically, a washer 3.3 is provided between the nut 3.2 and the first connecting plate 1.4, and a sleeve 3.1 is fitted on the end of the bolt 4.2 of the tie rod bolt 4 that extends out of the nut 3.2 to protect the thread of the bolt 4.2; the sleeve 3.1, the nut 3.2, and the washer 3.3 constitute the nut assembly 3.

[0034] Specifically, a second lubrication groove is provided circumferentially on the inner surface of the elliptical shaft hole 1.3 to facilitate the retention of lubricating substances.

[0035] Specifically, the nozzle body 1.1 has a stop 1.2 on the side near the conical intermediate member 2, and the conical intermediate member body 2.1 has a boss 2.2 on the side near the nozzle 1 that matches the stop 1.2. like Figure 4-6 As shown in the figure, this embodiment provides a method for using a rotary opening and closing nozzle device, as detailed below: When maintaining the mud-dissolving mechanism, such as cleaning old mud, first loosen the nut 3.2 on one side of the short rotating shaft 6, rotate the tie rod bolt 4 on this side around the short rotating shaft 6 to release its fixation to the first connecting plate 1.4 on this side of the nozzle 1; then, push the first connecting plate 1.4 on this side of the nozzle 1 to make the nozzle 1 rotate around the long rotating shaft 5. Because the nozzle 1 is provided with an elliptical shaft hole 1.3, the stop 1.2 of the nozzle 1 and the boss 2.2 of the conical intermediate part 2 can be easily separated, so that the two main bodies are separated and connected on one side of the long rotating shaft 5. There is no need to specially support and fix the nozzle 1, which makes cleaning and maintenance work convenient.

[0036] When replacing the nozzle 1 in the mud-pumping mechanism, first follow the steps above to separate the connection point and main body of the short shaft 6 on one side. Since the side tie rod bolt 4 is connected to the conical intermediate part 2, it does not need to be disassembled. Loosen the nut 3.2 on one side of the long shaft 5, rotate the tie rod bolt 4 on this side, and release its fixation to the first connecting plate 1.4 on this side of the nozzle 1. Disassemble the long shaft 5, and the nozzle 1 will separate from the conical intermediate part 2. The disassembly of the nozzle 1 is now complete. Repeat the above steps in reverse to install the nozzle 1. According to the needs of the site, the positions of the long shaft 5 and the short shaft 6 can be interchanged to meet the needs of using the equipment in different directions.

[0037] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention.

[0038] It should be understood that the present invention is not limited to the content already described above, and various modifications and changes can be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A rotary opening and closing nozzle device, characterized in that, Includes a cannon nozzle (1) and a conical intermediate part (2) adapted to the cannon nozzle (1). The cannon nozzle (1) includes a cannon nozzle body (1.1) and two first connecting plates (1.4) symmetrically fixed on both sides of the cannon nozzle body (1.1) and close to the conical intermediate part (2) and having slots. Each of the first connecting plates (1.4) has an elliptical shaft hole (1.3) at one end close to the conical intermediate part (2). The conical intermediate part (2) includes a conical intermediate part body (2.1) and two second connecting plates symmetrically fixed on both sides of the conical intermediate part body (2.1) and close to the nozzle (1). Each second connecting plate has a circular shaft hole (2.3) that is adapted to the elliptical shaft hole (1.3) at one end close to the nozzle (1). It also includes a long rotating shaft (5), a short rotating shaft (6), and two tie rod bolts (4), each with a pull ring (4.1). The long rotating shaft (5) passes through an elliptical shaft hole (1.3), a circular shaft hole (2.3), and a pull ring (4.1), so that a first connecting plate (1.4), a second connecting plate, and a tie rod bolt (4) are hinged together. The short rotating shaft (6) passes through another circular shaft hole (2.3) and another pull ring (4.1), so that another tie rod bolt (4) is hinged together with another second connecting plate. The other end of each of the tie rod bolts (4) passes through the corresponding slot and is fixed by a nut (3.2) to the side of the first connecting plate (1.4) away from the elliptical shaft hole (1.3).

2. The rotary opening and closing nozzle device according to claim 1, characterized in that, The first connecting plate (1.4) includes a first upper connecting plate and a first lower connecting plate symmetrical to the first upper connecting plate. The area between the first upper connecting plate and the first lower connecting plate is a slot for accommodating the tie rod bolt (4). Both the first upper connecting plate and the first lower connecting plate are provided with elliptical shaft holes (1.3) on the side near the conical intermediate piece (2).

3. The rotary opening and closing nozzle device according to claim 1, characterized in that, The second connecting plate includes a second upper connecting plate and a second lower connecting plate symmetrical to the second upper connecting plate. Both the second upper connecting plate and the second lower connecting plate are provided with a circular shaft hole (2.3) on the side near the nozzle (1). The pull ring (4.1) is set between the second upper connecting plate and the second lower connecting plate through a short rotating shaft (6).

4. The rotary opening and closing nozzle device according to claim 3, characterized in that, The top of the short rotating shaft (6) is provided with a first stop, and the second upper connecting plate is provided with a second stop that matches the first stop.

5. The rotary opening and closing nozzle device according to claim 1, characterized in that, The long rotating shaft (5) has multiple radially opened lubrication holes (5.1) along its axial direction, and the shaft center of the long rotating shaft (5) has a through hole with series lubrication holes (5.1).

6. The rotary opening and closing nozzle device according to claim 1, characterized in that, A first lubrication groove (4.3) is provided circumferentially on the inner surface of the pull ring (4.1) to facilitate the retention of lubricating substances.

7. The rotary opening and closing nozzle device according to claim 1, characterized in that, Spacer rings (7) are provided between the pull ring (4.1) and the first connecting plate (1.4), and between the first connecting plate (1.4) and the second connecting plate.

8. The rotary opening and closing nozzle device according to claim 1, characterized in that, A washer (3.3) is provided between the nut (3.2) and the first connecting plate (1.4), and a sleeve (3.1) for protecting the threads of the screw (4.2) of the tie rod bolt (4) is fitted on one end of the screw (4.2) that extends out of the nut (3.2).

9. The rotary opening and closing nozzle device according to claim 1, characterized in that, A second lubrication groove is provided circumferentially on the inner surface of the elliptical shaft hole (1.3) to facilitate the retention of lubricating substances.

10. The rotary opening and closing nozzle device according to claim 1, characterized in that, The main body of the cannon (1.1) has a stop (1.2) on the side near the conical intermediate part (2), and the main body of the conical intermediate part (2.1) has a boss (2.2) that matches the stop (1.2) on the side near the cannon (1).

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