Tightening device for tuyere small sleeve

Abstract

The application discloses a tuyere small sleeve installation pressing device and belongs to the technical field of tuyere small sleeve installation of a blast furnace. The device comprises a supporting piece. The supporting piece is arranged on the axial end surface of a tuyere large sleeve and intersects with the axis of the tuyere large sleeve. A positioning nut is arranged on the supporting piece and coaxial with the tuyere large sleeve of the blast furnace. A delivery screw is threadedly connected in the positioning nut, one end of the delivery screw is inserted into the tuyere large sleeve, and axial movement of the delivery screw can be realized by screwing the delivery screw. A delivery piece is arranged on one side end of the delivery screw. The delivery piece is used for pressing the axial end surface of the tuyere small sleeve. By rotating the delivery screw, one end of the delivery screw moves towards the tuyere small sleeve. During the movement, the axial end surface of the delivery screw presses one side of the delivery piece, and the other side of the delivery piece presses the axial end surface of the tuyere small sleeve. Further rotating the delivery screw, the delivery piece can drive the tuyere small sleeve to move axially to the center position of the tuyere middle sleeve, so that the installation of the tuyere small sleeve is realized.

Description

Technical Field

[0001] This application relates to the field of blast furnace tuyere sleeve installation technology, and in particular to a tuyere sleeve installation clamping device. Background Technology

[0002] The tuyere sleeve is an important piece of equipment in blast furnace production. It is cylindrical with a circular channel inside and is placed horizontally along the axis. Its main function is to send hot air into the blast furnace. Its front end is exposed to a high temperature of over 2000 degrees Celsius, directly facing the molten slag and iron. The working environment is extremely harsh. The rear end has a sealing surface that connects and seals with the tuyere sleeve. It is generally made of pure copper and is cooled by water inside. Its service life is relatively short and it needs to be replaced frequently.

[0003] To reduce investment, the blast furnace tuyere platform is designed with a compact layout, making it impossible to use construction machinery during tuyere replacement; manual installation is required. When installing a new tuyere sleeve, it is manually lifted into the inner tuyere sleeve and tamped down using a steel tamping rod. However, the sealing surface between the tuyere sleeve and the inner tuyere sleeve is frustum-shaped, meaning that the tamping rod can only reach one point on the annular end face of the sleeve. This results in significant wobbling and tilting of the sleeve, making installation extremely difficult, time-consuming, and physically demanding for workers. Summary of the Invention

[0004] The purpose of this application is to provide a clamping device for installing small air vent sleeves, which solves the problem of difficult installation of small air vent sleeves in the prior art.

[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0006] This application provides a clamping device for installing a small air vent sleeve, comprising:

[0007] The support component is located on the axial end face of the air outlet sleeve and intersects with the axis of the air outlet sleeve.

[0008] A positioning nut is provided on the support member and is coaxial with the blast furnace tuyeres sleeve;

[0009] The delivery screw is threadedly connected to the positioning nut.

[0010] A delivery component is used to connect with the delivery screw to press against the axial end face of the air vent sleeve.

[0011] In this design, a support component provides positioning and support for the positioning nut and the delivery screw. The delivery screw engages with the positioning nut, and rotating it moves one end toward the vent sleeve. During this movement, the axial end face of the delivery screw presses against one side of the delivery component, while the opposite side of the delivery component presses against the axial end face of the vent sleeve. Because the sealing surfaces of the vent sleeve and the vent middle sleeve are frustoconical, further rotation of the delivery screw allows the vent sleeve to move axially, gradually approaching the center of the vent middle sleeve, thus achieving the installation of the vent sleeve.

[0012] Optionally, the delivery component includes a sleeve portion, an abutment portion, and a positioning portion connected in sequence. The sleeve portion has an axially provided hole for the delivery screw to be inserted. The abutment portion has an abutment surface that fits against the axial end face of the air vent sleeve. The positioning portion is inserted into the inner hole of the air vent sleeve.

[0013] In use, first, place the small air vent sleeve inside the middle air vent sleeve, ensuring the small air vent sleeve contacts the sealing surface of the middle air vent sleeve. Next, insert the delivery screw into the hole of the sleeve to fix the delivery part in position, and insert the end of the positioning part into the inner hole of the small air vent sleeve. Then, rotate the delivery screw to move the delivery part, thereby pushing the small air vent sleeve to move.

[0014] Optionally, the support includes a first crossbeam and two second crossbeams symmetrically arranged at both ends of the first crossbeam. One end of each of the two second crossbeams is hinged to both ends of the first crossbeam, and the other end of each of the two second crossbeams is hinged to a fixed seat. The fixed seat is connected to the axial end face of the air vent sleeve.

[0015] Optionally, the positioning nut is welded to the middle of the first crossbeam.

[0016] To improve the adaptability of the support component and accommodate connections to vent sleeves of different sizes, this design employs a three-section structure for easy length adjustment. Specifically, the support component includes a first crossbeam and two second crossbeams symmetrically positioned at both ends of the first crossbeam. One end of each of the two second crossbeams is hinged to one end of the first crossbeam. The other ends of each of the two second crossbeams are hinged to a fixing seat, which is connected to the axial end face of the vent sleeve. In some designs, the fixing seat can be a fulcrum on the vent sleeve used to fix the direct-blowing pipe. This hinged design allows the support component to be shortened or lengthened to meet the connection requirements of vent sleeves of different sizes. During use, the delivery screw is inserted into the sleeve section, and the positioning part is located within the inner hole of the vent sleeve. As the delivery screw advances, the positioning nut moves to a coaxial position with the vent sleeve under the reaction force of the delivery screw.

[0017] Compared with the prior art, the beneficial effects achieved by this application are as follows: This application provides positioning and support for the positioning nut and the delivery screw through a support member. By cooperating with the positioning nut, rotating the delivery screw allows one end to move towards the vent sleeve. During this movement, the axial end face of the delivery screw presses against one side of the delivery component, while the opposite side of the delivery component presses against the axial end face of the vent sleeve. Further rotation of the delivery screw enables axial movement of the vent sleeve, thereby completing the installation of the vent sleeve. This application is simple to operate, reducing the labor intensity of operators. Furthermore, during installation, the axial force on the end face of the vent sleeve prevents it from shaking or tilting, greatly reducing the difficulty of installation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this disclosure 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 disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of some embodiments provided in this application;

[0020] Figure 2 These are schematic diagrams of the delivery component structure of some embodiments provided in this application.

[0021] Explanation of reference numerals in the attached drawings: 1-Support component; 2-Positioning nut; 3-Delivery screw; 4-Delivery component; 5-Large air vent sleeve; 6-Middle air vent sleeve; 7-Small air vent sleeve; 11-First crossbeam; 12-Second crossbeam; 13-Hinge; 14-Fixing seat; 31-Tightening component; 41-Sleeve section; 42-Abutting section; 43-Positioning section. Detailed Implementation

[0022] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure / application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.

[0023] Example 1

[0024] This embodiment describes a clamping device for installing a small air vent sleeve. (Refer to...) Figure 1 and Figure 2In this embodiment, the tuyeres sleeve installation and clamping device includes a support member 1. The support member 1 is disposed on the axial end face of the tuyeres sleeve 5 and intersects with the axis of the tuyeres sleeve 5. A positioning nut 2 is disposed on the support member 1, and the positioning nut 2 is coaxial with the blast furnace tuyeres sleeve 5. A delivery screw 3 is threaded into the positioning nut 2, and one end of the delivery screw 3 is inserted into the tuyeres sleeve 5. Axial movement can be achieved by turning the delivery screw 3. A delivery member 4 is disposed at the end of the delivery screw 3 located on one side of the tuyeres sleeve 5. The delivery member 4 is used to connect with the delivery screw 3 to press against the axial end face of the tuyeres sleeve 7.

[0025] In this embodiment, the support member 1 provides positioning and support for the positioning nut 2 and the delivery screw 3. The delivery screw 3 engages with the positioning nut 2, and rotating it moves one end toward the air vent sleeve 7. During this movement, the axial end face of the delivery screw 3 presses against one side of the delivery member 4, while the opposite side of the delivery member 4 presses against the axial end face of the air vent sleeve 7. Because the sealing surfaces of the air vent sleeve 7 and the air vent middle sleeve 6 are frustoconical, further rotation of the delivery screw 3 allows the delivery member 4 to move the air vent sleeve 7 axially to the center position of the air vent middle sleeve 6, thus achieving the installation of the air vent sleeve 7.

[0026] Furthermore, in this embodiment, the delivery component 4 includes a sleeve portion 41, an abutment portion 42, and a positioning portion 43 connected in sequence. The sleeve portion 41 has an axially oriented hole for the insertion of the delivery screw 3. The abutment portion 42 is disc-shaped and made of steel; the disc surface can fit against the axial end face of the air vent sleeve 7. The positioning portion 43 is inserted into the inner hole of the air vent sleeve 7. In use, firstly, the air vent sleeve 7 is placed inside the air vent sleeve 6, so that the air vent sleeve 7 contacts the sealing surface of the air vent sleeve 6. Next, the delivery screw 3 is inserted into the hole of the sleeve portion 41 to fix the position of the delivery component 4, and the end of the positioning portion 43 is inserted into the inner hole of the air vent sleeve 7. Then, by rotating the delivery screw 3, the delivery component 4 is moved, thereby pushing the air vent sleeve 7 to move.

[0027] In this embodiment, a screw 31 is provided on the delivery screw 3. The screw 3 can be pushed forward by rotating the screw 31 clockwise and pushed backward by rotating it counterclockwise.

[0028] Example 2

[0029] Based on the same inventive concept as Embodiment 1, refer to Figure 1 and Figure 2To improve the adaptability of the support member 1 and facilitate connection to air outlet sleeves 5 of different sizes, in this embodiment, the support member 1 adopts a three-section structure to facilitate length adjustment. Specifically, the support member 1 includes a first crossbeam 11 and two second crossbeams 12 symmetrically arranged at both ends of the first crossbeam 11. A positioning nut 2 is welded to the middle of the first crossbeam 11. One end of each of the two second crossbeams 12 is hinged to both ends of the first crossbeam 11 via hinges 13. The other ends of each of the two second crossbeams 12 are hinged to a fixing seat 14, which is connected to the axial end face of the air outlet sleeve 5. In some embodiments, the fixing seat 14 can be a fulcrum on the air outlet sleeve 5 used to fix the air outlet direct blowing pipe. In addition, the first crossbeam 11 and the two crossbeams 12 are made of steel to withstand the reaction force generated by the delivery screw 3. The sum of the lengths of the first crossbeam 11 and the two second crossbeams 12 is 1.5m, which can be fixed on the air outlet sleeve 5 with a diameter not exceeding 1.5m.

[0030] By means of hinge, the support member 1 can be shortened or lengthened to meet the connection requirements of large air vent sleeves 5 of different sizes. In use, the delivery screw 3 is inserted into the sleeve part 41, and the positioning part 43 is located in the inner hole of the small air vent sleeve 7. Because the sealing surfaces of the small air vent sleeve 7 and the middle air vent sleeve 6 are frustoconical, as the delivery screw 3 is pushed forward, the small air vent sleeve 7 gradually moves to the center position of the middle air vent sleeve 6, thereby realizing the installation of the small air vent sleeve 7.

[0031] The support member 1 has multiple hinged connection points, which may cause the delivery screw to shift. To ensure the stability of the first crossbeam 11 and the second crossbeam 12 during the advancement of the delivery screw 3, in this embodiment, the positioning part 43 is fitted with the inner wall of the air vent sleeve 7. When the disc surface is in contact with the axial end face of the air vent sleeve 7, the outer wall of the positioning part 43 is in contact with the inner wall of the air vent sleeve 7. In use, the positioning part 43 can be fully inserted into the inner hole of the air vent sleeve 7. At this time, the position of the delivery screw 3 will be restricted. As the delivery screw 3 is advanced, the axis of the delivery screw 3 will move towards the axis of the air vent sleeve 6 together with the axis of the air vent sleeve 7 until they coincide and the installation is completed.

[0032] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this disclosure / application, and these improvements and modifications should also be considered within the protection scope of this disclosure / application.

Claims

1. A clamping device for installing a small air vent sleeve, characterized in that, include: The support member (1) is disposed on the axial end face of the air outlet sleeve (5) and intersects with the axis of the air outlet sleeve (5); The positioning nut (2) is set on the support (1) and is coaxial with the air outlet sleeve (5); The delivery screw (3) is threadedly connected to the positioning nut (2); Delivery component (4) is used to connect with the delivery screw (3) to press against the axial end face of the air outlet sleeve (7).

2. The air vent sleeve installation and clamping device according to claim 1, characterized in that, The delivery component (4) includes a sleeve portion (41), an abutment portion (42), and a positioning portion (43) connected in sequence. The sleeve portion (41) has an axial hole for the delivery screw (3) to be inserted. The abutment portion (42) has an abutment surface that fits against the axial end face of the air vent sleeve (7). The positioning portion (43) is inserted into the inner hole of the air vent sleeve (7).

3. The air vent sleeve installation and clamping device according to claim 2, characterized in that, The support member (1) includes a first crossbeam (11) and two second crossbeams (12) symmetrically arranged at both ends of the first crossbeam (11). One end of each of the two second crossbeams (12) is hinged to both ends of the first crossbeam (11) by a hinge (13), and the other end of each of the two second crossbeams (12) is hinged to a fixed seat (14). The fixed seat (14) is connected to the axial end face of the air vent sleeve (5).

4. The air vent sleeve installation and clamping device according to claim 3, characterized in that, The positioning nut (2) is welded to the middle of the first crossbeam (11).

5. The air vent sleeve installation and clamping device according to claim 3, characterized in that, The sum of the lengths of the first crossbeam (11) and the two second crossbeams (12) is 1.2m-1.5m.

6. The air vent sleeve installation and clamping device according to claim 3, characterized in that, The first crossbeam (11), the second crossbeam (12), and the abutment part (42) are all made of steel.

7. The air vent sleeve installation and clamping device according to claim 2, characterized in that, The contact part (42) is disc-shaped.

8. The air vent sleeve installation and clamping device according to claim 1, characterized in that, The delivery screw (3) is provided with a screwing component (31) for circumferentially rotating the delivery screw (3).

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