Tundish upper nozzle structure

Abstract

The utility model discloses a tundish upper nozzle structure which comprises a tundish, a positioning insertion cylinder is arranged on the bottom face in the tundish, an upper water pipe is detachably arranged in the positioning insertion cylinder, and a fixing rod structure used for abutting against and fixing the position of the upper water pipe is arranged on the upper side of the tundish. The positioning inserting cylinder is arranged in the middle of the bottom face in the tundish, two or more opening grooves are formed in the outer side wall of the positioning inserting cylinder, and the positioning inserting cylinder is arranged at the bottom of the tundish, so that the water feeding pipe is detachably connected in the tundish. And the directionality and the stability of the water feeding pipe can be realized through a fixing rod structure under the condition that the water feeding pipe is convenient and detachable, so that the conditions such as dislocation during water feeding are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tundishes, in particular to an upper water inlet structure of a tundish. Background Art

[0002] The tundish is a refractory container used in short-process steelmaking. It first receives the molten steel poured from the ladle, and then distributes it to each crystallizer through the tundish water inlet. The upper water inlet of the tundish is often burned out due to excessive temperature, so the upper water inlet needs to be replaced frequently.

[0003] A tundish upper water inlet structure with application number 201921987864.1 comprises a tundish body, a mounting opening is provided on one side of the bottom outer wall of the tundish body, a fixing plate is fixed to one side of the bottom outer wall of the tundish body by bolts, and a fixing opening of a conical structure is provided on the bottom outer wall of the fixing plate, an upper water pipe of the same conical structure is sleeved on the inner wall of the fixing opening and the inner wall of the mounting opening, and mounting grooves are provided on both sides of the outer walls of the upper water pipe;

[0004] The current water inlet is connected to the tundish in a detachable manner, but has poor orientation and stability, which may cause misalignment when adding water. Utility Model Content

[0005] The purpose of the present invention is to solve the above problems and provide a middle bag upper water inlet structure to overcome the defects of the prior art, as described below.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model provides a middle bag upper water inlet structure, comprising a middle bag, wherein a positioning insert is arranged on the inner bottom surface of the middle bag, an upper water pipe is detachably arranged in the positioning insert, and a fixing rod structure for abutting and fixing the position of the upper water pipe is arranged on the upper side of the middle bag.

[0008] Preferably, the positioning insert is arranged in the middle of the bottom surface of the tundish, and two or more opening grooves are provided on the outer side wall of the positioning insert.

[0009] Preferably, the outer protrusion of the water supply pipe is provided with a plurality of guide ribs, and the inner wall of the positioning insert is provided with a guide slot for cooperating with the guide ribs for guiding connection.

[0010] Preferably, a pipe joint is provided at the upper end of the upper water pipe, and the fixed rod structure comprises a rod body, one end of the rod body is detachably connected to the intermediate package, and the other end of the rod body is in contact with the outer wall of the pipe joint.

[0011] Preferably, the end of the rod body is provided with a slot for engaging with the upper edge of the tundish, and the outer side wall of the end of the rod body is threadedly connected with a fixing bolt for achieving a tight abutment with the outer side wall of the tundish.

[0012] Preferably, a plug is fixedly connected to the other end of the rod body, a stop block is detachably connected to the outer side of the plug, and an arc-shaped groove for abutting against the outer side wall of the pipe joint is formed at the end of the stop block.

[0013] Preferably, a liquid passing groove corresponding to the opening groove is opened on the outer side wall of the lower end of the water supply pipe.

[0014] The beneficial effects are:

[0015] By setting a positioning insert at the bottom of the tundish, the upper water pipe can be detachably connected in the tundish. The fixed rod structure can also be used to achieve the directionality and stability of the upper water pipe in a convenient and detachable state, thereby avoiding misalignment when adding water. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 This utility model Figure 1 AA section view;

[0019] Figure 3 This utility model Figure 2 A partial enlarged view of point B;

[0020] Figure 4 This utility model Figure 1 Stereoscopic diagram.

[0021] The description of the accompanying drawings is as follows: 1. Tundish; 2. Fixed rod structure; 201. Rod body; 202. Plug; 203. Block; 204. Slot; 205. Tightening bolt; 3. Water supply pipe; 301. Pipe joint; 302. Liquid passage trough; 303. Guide rib; 4. Positioning insert; 401. Opening slot. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0023] See also Figure 1-Figure 4 As shown, the utility model provides a middle ladle upper water inlet structure, including a middle ladle 1, a positioning insert 4 is provided on the inner bottom surface of the middle ladle 1, an upper water pipe 3 is detachably provided in the positioning insert 4, and a fixing rod structure 2 for abutting and fixing the position of the upper water pipe 3 is provided on the upper side of the middle ladle 1.

[0024] See the instruction manual Figure 2 and 4 As shown, the positioning insert 4 is arranged at the middle position of the bottom surface of the tundish 1, and two or more opening grooves 401 are provided on the outer wall of the positioning insert 4. Through the above-mentioned specific structural design, when molten steel is poured into the tundish 1 from the upper water pipe 3, it can be evenly diffused around the tundish 1 through the opening grooves 401.

[0025] The outer protrusion of the upper water pipe 3 is provided with a plurality of guide ribs 303, the inner wall of the positioning insert 4 is provided with a guide slot for guiding and connecting with the guide ribs 303, and the outer wall of the lower end of the upper water pipe 3 is provided with a liquid-passing slot 302 corresponding to the opening slot 401. Through the above-mentioned specific structural design, the guide ribs 303 can realize the directional insertion of the upper water pipe 3 in the insert 4, and can also ensure that the liquid-passing slot 302 and the opening slot 401 correspond to each other.

[0026] The upper end of the water supply pipe 3 is provided with a pipe joint 301, and the fixed rod structure 2 includes a rod body 201, one end of the rod body 201 is detachably connected to the tundish 1, and the other end of the rod body 201 is in contact with the outer wall of the pipe joint 301. The end of the rod body 201 is provided with a clamping groove 204 for clamping with the upper edge of the tundish 1, and the outer wall of the end of the rod body 201 is threadedly connected with a fixing bolt 205 for achieving a tight contact with the outer wall of the tundish 1. The other end of the rod body 201 is fixedly connected with a plug 202, and the outer side of the plug 202 is detachably connected with a block 203, and the end of the block 203 is provided with an arc groove for abutting with the outer wall of the pipe joint 301. Through the above-mentioned specific structural design, the block 203 is made of high temperature resistant material and can be easily replaced. The fixed rod structure 2 can ensure that the upper water pipe 3 is conveniently detachably connected, and the position orientation and stability of the upper water pipe 3 are ensured, and it is convenient to dock with the water supply pipe.

[0027] Working principle:

[0028] When pouring molten steel into the tundish 1, it is connected with the pipe joint 301, and the molten steel is poured into the tundish 1 from the upper water pipe 3 and the liquid passing groove 302 thereon and the open groove 401 provided on the positioning insert 4. During this process, the fixed rod structure 2 can realize the clamping and fixing of the upper water pipe 3 in the positioning insert 4. When disassembling and replacing the upper water pipe 3, loosen the tightening bolts 205 for tightening the tundish 1, separate the rod body 201 and the tundish 1 from each other, that is, separate the slot 204 from the tundish 1, and then pull the upper water pipe 3 out of the positioning insert 4.

[0029] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A tundish upper water inlet structure, characterized in that: The invention comprises a tundish (1), wherein a positioning insert (4) is arranged on the inner bottom surface of the tundish (1), a water supply pipe (3) is detachably arranged in the positioning insert (4), and a fixing rod structure (2) for abutting and fixing the position of the water supply pipe (3) is arranged on the upper side of the tundish (1).

2. According to claim 1, a tundish upper water inlet structure is characterized by: The positioning insert (4) is arranged at the middle position of the inner bottom surface of the tundish (1), and the outer side wall of the positioning insert (4) is provided with more than two opening grooves (401).

3. According to claim 1, the structure of the tundish upper nozzle is characterized in that: The outer protrusion of the water supply pipe (3) is provided with a plurality of guide ribs (303), and the inner wall of the positioning insert (4) is provided with a guide slot for cooperating with the guide ribs (303) for guiding connection.

4. The tundish upper water inlet structure according to claim 1, characterized in that: The upper end of the water supply pipe (3) is provided with a pipe joint (301), and the fixed rod structure (2) comprises a rod body (201), one end of the rod body (201) and the tundish (1) are detachably connected to each other, and the other end of the rod body (201) and the outer wall of the pipe joint (301) are in contact with each other.

5. A tundish upper water inlet structure according to claim 4, characterized in that: The end of the rod body (201) is provided with a slot (204) for engaging with the upper edge of the tundish (1), and the outer wall of the end of the rod body (201) is threadedly connected with a fixing bolt (205) for achieving a fixing and abutting contact with the outer wall of the tundish (1).

6. A tundish upper water inlet structure according to claim 5, characterized in that: The other end of the rod body (201) is fixedly connected to a plug (202), and a stopper (203) is detachably connected to the outside of the plug (202), and an arc-shaped groove for abutting against the outer wall of the pipe joint (301) is formed at the end of the stopper (203).

7. The tundish upper water inlet structure according to claim 2, characterized in that: The lower end outer wall of the water supply pipe (3) is provided with a liquid passage groove (302) corresponding to the opening groove (401) one by one.

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