Leakage-proof blanking pipe structure for converter steelmaking

Abstract

The utility model relates to a leakage-proof blanking pipe structure for converter steelmaking, and belongs to the technical field of metallurgical auxiliary equipment. Comprising an inner discharging pipe and an outer discharging pipe, and the inner discharging pipe is sleeved with the outer discharging pipe; the inner blanking pipe comprises two inner straight blanking pipes, and the two inner straight blanking pipes are connected through an inner inclined blanking pipe; the outer blanking pipe comprises two outer straight blanking pipes, the two outer straight blanking pipes are connected through an outer inclined blanking pipe, the outer straight blanking pipes are sleeved with inner straight blanking pipes, the outer straight blanking pipes and the inner straight blanking pipes are coaxially arranged, and first fixing rib plates are symmetrically arranged between the outer straight blanking pipes and the inner straight blanking pipes; the outer inclined blanking pipe and the inner inclined blanking pipe are eccentrically arranged; a second fixing rib plate is arranged between the outer inclined discharging pipe and the inner inclined discharging pipe. A stop block unit is arranged at the bottom of the inner wall of the inner inclined discharging pipe. The service life is prolonged, the welding repair operation on the discharging pipe is reduced, the production cost is reduced, workshop environment pollution is avoided, and the production rhythm is guaranteed.

Description

Technical Field

[0001] The utility model relates to a leakage - proof feeding pipe structure for converter steelmaking, belonging to the technical field of metallurgical auxiliary equipment. Background Art

[0002] In converter steelmaking production, the main task of the feeding device is to transport various ore raw materials for converter steelmaking to a high - level bin dozens of meters high in the middle of the converter steelmaking area, and timely and accurately supply the weighed various ore raw materials to the converter for smelting through the feeding pipe, which is an important link to improve the efficiency of converter steelmaking and the quality of molten steel.

[0003] However, in actual production, due to the large hardness, feeding drop and usage amount of steelmaking alloys, and many sharp edges and corners on their outer shapes, the impact force on the inner wall of the feeding pipe is large and the damage is serious, so that the feeding pipe of the feeding device often wears through and leaks materials. At present, the general measure taken after the feeding pipe wears through is "tile - pasting" welding repair; after welding repair, it won't take long before the "tile - pasting" welded position is penetrated by the materials again and needs to be welded again. Frequent material leakage increases the steelmaking cost, pollutes the workshop environment, increases the maintenance workload, and affects the normal production rhythm. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a leakage - proof feeding pipe structure for converter steelmaking aiming at the above - mentioned prior art, which can improve the service life, reduce the welding repair operation of the feeding pipe, lower the production cost, avoid the pollution of the workshop environment, and ensure the production rhythm.

[0005] The technical solution adopted by the utility model to solve the above problems is: a leakage - proof feeding pipe structure for converter steelmaking, including an inner feeding pipe and an outer feeding pipe. The outer feeding pipe sleeves the inner feeding pipe. Flanges are respectively arranged at the inlet end and the outlet end of the inner feeding pipe. The inner feeding pipe includes two parallel inner straight feeding pipes, and the two inner straight feeding pipes are connected by an inner inclined feeding pipe. The outer feeding pipe includes two outer straight feeding pipes, and the two outer straight feeding pipes are connected by an outer inclined feeding pipe. The outer straight feeding pipe sleeves the inner straight feeding pipe, and they are coaxially arranged. First fixed rib plates are symmetrically arranged between the outer straight feeding pipe and the inner straight feeding pipe. The outer inclined feeding pipe sleeves the inner inclined feeding pipe, and they are eccentrically arranged. Second fixed rib plates are arranged between the outer inclined feeding pipe and the inner inclined feeding pipe. A stop block unit is arranged at the bottom of the inner wall of the inner inclined feeding pipe.

[0006] The second fixed rib plates are arranged in the gap between the upper parts of the outer inclined feeding pipe and the inner inclined feeding pipe.

[0007] The stop block unit includes a plurality of stop blocks arranged in a staggered manner up and down.

[0008] The top of the stop block has an outward - protruding arc - shaped protrusion.

[0009] There is also an impact protection layer, which includes a first impact protection layer and a second impact protection layer. The first impact protection layer is arranged outside the bending impact point of the inner blanking pipe, and the first impact protection layer is arranged in the gap between the outer inclined blanking pipe and the inner inclined blanking pipe; the second impact protection layer is arranged outside the other bending impact point of the inner blanking pipe, and the second impact protection layer is arranged inside the outer straight blanking pipe.

[0010] Compared with the prior art, the advantages of the present utility model are as follows: For a leakage-proof blanking pipe structure for converter steelmaking, an outer blanking pipe is sleeved outside the inner blanking pipe, so that the materials leaked from the inner blanking pipe are collected in the outer blanking pipe. Secondly, a plurality of stop blocks are arranged at the bottom of the inner wall of the inner blanking pipe, which changes the sliding friction between the materials and the inner wall of the inner blanking pipe into rolling friction, reducing the wear of the inner blanking pipe by the materials. A first impact protection layer and a second impact protection layer are arranged inside the outer blanking pipe. When the two turning impact points of the inner blanking pipe are damaged, material impacts material. This application improves the service life, reduces the welding repair operation of the blanking pipe, reduces the production cost, avoids environmental pollution in the workshop, and ensures the production rhythm. Description of the Drawings

[0011] Figure 1 It is a schematic diagram of a leakage-proof blanking pipe structure for converter steelmaking according to an embodiment of the present utility model;

[0012] Figure 2 It is a schematic diagram of the inner blanking pipe;

[0013] Figure 3 It is a cross-sectional view of the inner straight blanking pipe and the outer straight blanking pipe;

[0014] Figure 4 It is a cross-sectional view of the inner inclined blanking pipe and the outer inclined blanking pipe;

[0015] Figure 5 It is a cross-sectional view of the first impact protection layer;

[0016] Figure 6 It is a cross-sectional view of the second impact protection layer;

[0017] Figure 7 It is an installation schematic diagram of the stop block;

[0018] In the figure, 1 is a flange, 2 is an outer blanking pipe, 3 is an inner blanking pipe, 3.1 is an inner straight blanking pipe, 3.2 is an inner inclined blanking pipe, 4 is a stop block, 5 is a first impact protection layer, 6 is a second impact protection layer, 7 is a first fixing rib plate, and 8 is a second fixing rib plate. Detailed Embodiment

[0019] The present utility model will be further described in detail below in conjunction with the embodiments of the drawings.

[0020] As Figure 1-4As shown in the figure, a ladle steelmaking anti-leakage feeding pipe structure in this embodiment includes an inner feeding pipe 3 and an outer feeding pipe 2. The outer feeding pipe 2 is sleeved on the inner feeding pipe 3. Flanges 1 are respectively arranged at the inlet end and the outlet end of the inner feeding pipe 3 for easy installation. The inner feeding pipe 3 includes two parallel inner straight feeding pipes 3.1, and the two inner straight feeding pipes 3.1 are connected by an inner inclined feeding pipe 3.2, so that the inner feeding pipe 3 has two bending impact points. The outer feeding pipe 2 includes two outer straight feeding pipes, and the two outer straight feeding pipes are connected by an outer inclined feeding pipe. The outer straight feeding pipe is sleeved on the inner straight feeding pipe 3.1, and they are coaxially arranged. Symmetrically arranged first fixing rib plates 7 are arranged between the outer straight feeding pipe and the inner straight feeding pipe 3.1, so that the outer straight feeding pipe and the inner straight feeding pipe 3.1 are fixedly connected; the outer inclined feeding pipe is sleeved on the inner inclined feeding pipe 3.2, and they are eccentrically arranged, so that the gap between the upper parts of the outer inclined feeding pipe and the inner inclined feeding pipe is smaller than the gap between the lower parts of the outer inclined feeding pipe and the inner inclined feeding pipe. A second fixing rib plate 8 is arranged in the gap between the upper parts of the outer inclined feeding pipe and the inner inclined feeding pipe 3.2, so that the outer inclined feeding pipe and the inner inclined feeding pipe are fixedly connected. A plurality of stop blocks 4 are arranged at the bottom of the inner wall of the inner inclined feeding pipe 3.2, and the plurality of stop blocks 4 are distributed in a staggered manner up and down. The material falls from one inner straight feeding pipe to the inner inclined feeding pipe, and then the material flows out through the other inner straight feeding pipe. Due to the arranged stop blocks, the material in the inner inclined feeding pipe is changed from sliding friction to rolling friction, reducing the wear of the material on the inner wall of the inner inclined feeding pipe.

[0021] As Figure 5 , 6 shown, a first anti-impact layer 5 is arranged outside a bending impact point of the inner feeding pipe 3. The first anti-impact layer 5 is arranged in the gap between the outer inclined feeding pipe and the inner inclined feeding pipe. A second anti-impact layer 6 is arranged outside the other bending impact point of the inner feeding pipe. The second anti-impact layer 6 is arranged inside the outer straight feeding pipe. The first anti-impact layer and the second anti-impact layer are arranged on the impact side where the material falls to the inner feeding pipe, which can ensure that in the case of the inner wall of the inner feeding pipe being damaged, material hits material, playing a very good buffering role.

[0022] As Figure 7 shown, the distribution range of the stop blocks is 1 / 3 of the inner wall circumference of the inner feeding pipe, and the height of the stop blocks is 10 mm. The top of the stop block has an outwardly protruding arc-shaped protrusion to prevent powder material from accumulating in the inner feeding pipe.

[0023] By sleeving an outer blanking pipe outside the inner blanking pipe, the materials leaked from the inner blanking pipe can be collected inside the outer blanking pipe. Secondly, a plurality of stop blocks are arranged at the bottom of the inner wall of the inner blanking pipe, so that the sliding friction between the materials and the inner wall of the inner blanking pipe is changed into rolling friction, reducing the wear of the inner blanking pipe by the materials. A first anti-impact layer and a second anti-impact layer are arranged inside the outer blanking pipe. When two turning impact points of the inner blanking pipe are damaged, material impacts material. This application improves the service life, reduces the welding repair operation of the blanking pipe, reduces the production cost, avoids environmental pollution in the workshop, and ensures the production rhythm.

[0024] In addition to the above embodiments, the present utility model also includes other implementation manners. Any technical solutions formed by equivalent transformation or equivalent substitution shall fall within the protection scope of the claims of the present utility model.

Claims

1. A leak-proof feed pipe structure for converter steelmaking, characterized in that: It includes an inner feed pipe and an outer feed pipe, the outer feed pipe is sleeved with the inner feed pipe, and flanges are respectively arranged at the inlet and outlet ends of the inner feed pipe; the inner feed pipe includes two inner straight feed pipes arranged in parallel, and the two inner straight feed pipes are connected by an inner inclined feed pipe; the outer feed pipe includes two outer straight feed pipes, and the two outer straight feed pipes are connected by an outer inclined feed pipe, the outer straight feed pipe is sleeved with the inner straight feed pipe, the two are coaxially arranged, and a first fixed rib is symmetrically arranged between the outer straight feed pipe and the inner straight feed pipe; the outer inclined feed pipe is sleeved with the inner inclined feed pipe, and the two are eccentrically arranged; a second fixed rib is arranged between the outer inclined feed pipe and the inner inclined feed pipe; a stop block unit is arranged at the bottom of the inner wall of the inner inclined feed pipe.

2. The leak-proof feed pipe structure for converter steelmaking according to claim 1, characterized in that: The second fixed rib is arranged in a gap between the upper part of the outer inclined feeding pipe and the inner inclined feeding pipe.

3. The leak-proof feed pipe structure for converter steelmaking according to claim 1, characterized in that: The stop block unit includes a plurality of stop blocks which are arranged alternately up and down.

4. The leak-proof feed pipe structure for converter steelmaking according to claim 3, characterized in that: The top of the stop block is provided with an arc-shaped protrusion protruding outwards.

5. The leak-proof feed pipe structure for converter steelmaking according to claim 1, characterized in that: There is also an impact-proof layer, which includes a first impact-proof layer and a second impact-proof layer. The first impact-proof layer is arranged outside a bending impact position of the inner feeding pipe, and the first impact-proof layer is arranged in the gap between the outer inclined feeding pipe and the inner inclined feeding pipe; the second impact-proof layer is arranged outside another bending impact position of the inner feeding pipe, and the second impact-proof layer is arranged inside the outer straight feeding pipe.

Images