A ladle purging plug with a pre-buried thread connecting structure

Abstract

The utility model belongs to refractory material technical field discloses a kind of mat brick for ladle air brick with pre-buried threaded connection structure, including mat brick body and mat brick special-purpose matched puller, mat brick body bottom is inlayed and fixedly provided with threaded connector, threaded connector includes horizontally arranged sleeve, internal thread is arranged in sleeve, anchor is extended on the outer peripheral wall of sleeve, and anchor is embedded in the inside below of mat brick body;Puller includes pull connection end, and pull connection end bottom is connected with connecting rod, and connecting rod bottom is vertically connected with handle, and pull connection end surface is equipped with the external thread matched with the internal thread in sleeve, and pull connection end is connected with the internal thread in sleeve by the external thread of its surface screwing;The utility model is matched by anchor and puller, and mat brick can be taken out completely, and mat brick is reinstalled after replacing air brick, and the service life of mat brick is better played.

Description

Technical Field

[0001] This utility model belongs to the field of refractory materials technology, specifically relating to a pad brick for a steel ladle permeable brick with a pre-embedded threaded connection structure. Background Technology

[0002] In the iron and steel metallurgical industry, bottom-blown argon refining of the ladle is a crucial step in modern steelmaking processes, playing a vital role in improving steel quality. This process involves installing permeable bricks at the bottom of the ladle and blowing inert gas (usually argon) into the molten steel. The resulting numerous tiny bubbles agitate the molten steel. This effectively homogenizes the temperature and chemical composition of the molten steel, promotes the flotation and removal of non-metallic inclusions, and provides favorable kinetic conditions for ladle refining, making it an indispensable technique for producing high-purity steel.

[0003] However, the safe and stable operation of a permeable brick system relies heavily on the support and protection of the pad bricks. The pad bricks provide stable support and positioning for the permeable bricks above, bearing the static pressure of the molten steel and the mechanical stress during operation. Simultaneously, they seal the gap between the permeable bricks and the bottom shell of the ladle, preventing the leakage of high-temperature molten steel, thus serving as a crucial safety barrier. The pad bricks also act as a connecting bridge between the permeable brick's air ducts and the external air source pipeline. Therefore, pad bricks have become a key functional refractory element used in conjunction with permeable bricks in the modern metallurgical industry.

[0004] In the later stages of steelmaking, the permeable bricks need to be replaced. The existing method is to break the pad bricks and then remove the permeable bricks. However, at this time, the service life of the pad bricks is far from being reached, resulting in a great waste of resources. In order to solve the above problems, a pad brick for steel ladle permeable bricks with a pre-embedded threaded connection structure is proposed. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a pad brick for a steel ladle ventilated brick with a pre-embedded threaded connection structure. Its structure is simple and easy to use. The ventilated brick can be replaced without breaking the pad brick, so that the service life of the pad brick can be better utilized and production costs are saved.

[0006] The technical solution adopted by this utility model is as follows: a pad brick for a steel ladle permeable brick with a pre-embedded threaded connection structure, including a pad brick body and a special matching puller for the pad brick. A threaded connector is embedded and fixedly installed at the bottom of the pad brick body. The threaded connector includes a horizontally arranged sleeve with an internal thread inside the sleeve. An anchor extends radially on the outer peripheral wall of the sleeve. The anchor is embedded in the lower interior of the pad brick body. The anchor is rod-shaped, and there are 3-6 of them symmetrically distributed. The puller includes a pull connecting end. The bottom of the pull connecting end is connected to a connecting rod. The pull connecting end and the connecting rod are hollow tubes and are arranged on the same straight line. A handle is vertically connected to the bottom of the connecting rod. The surface of the pull connecting end is provided with an external thread that matches the internal thread of the sleeve. The pull connecting end is screwed and connected to the internal thread inside the sleeve through the external thread on its surface, forming a force transmission structure for pulling the pad brick body out of the bottom installation position of the steel ladle.

[0007] There are four anchors, which are symmetrically distributed in a cross shape with the sleeve as the center.

[0008] The sleeve and anchor are made of high-temperature resistant metal material in one piece.

[0009] The handles can be straight, U-shaped, or ring-shaped.

[0010] The high-temperature resistant metal material is 310S stainless steel or heat-resistant alloy.

[0011] Tail pipe channels are provided in the middle and top of the pad bricks. The tail pipe channels are connected to the sleeve. A breathable brick is provided above the pad bricks. The tail pipe at the bottom of the breathable bricks passes through the tail pipe channels.

[0012] The beneficial effects of this utility model are as follows: This utility model has a simple structure and is easy to use. With the cooperation of anchors and pullers, the pad bricks can be completely removed. After the breathable bricks are replaced, the pad bricks can be reinstalled, realizing the multiple uses of the pad bricks, better maximizing their service life, saving resources, and reducing production costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model in use; Figure 2 This is a schematic diagram of the brick body structure of this utility model; Figure 3 This is a schematic diagram of the threaded connector structure of this utility model; Figure 4 This is a schematic diagram of the puller structure of this utility model.

[0014] The markings in the diagram are: 1. Pad brick body, 11. Tail pipe channel; 2. Puller, 21. Pull connection end, 22. Connecting rod, 23. Handle; 3. Threaded connector, 31. Sleeve, 32. Anchor; 4. Breathable brick, 41. Tail pipe. Detailed Implementation

[0015] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0016] like Figure 1-4 As shown, a type of pad brick for steel ladle permeable bricks with a pre-embedded threaded connection structure includes a pad brick body 1 and a special puller 2 for the pad brick. A threaded connector 3 is embedded and fixedly installed at the bottom of the pad brick body 1. The threaded connector 3 includes a horizontally arranged sleeve 31 with internal threads. Anchors 32 extend radially from the outer peripheral wall of the sleeve 31 and are embedded in the lower interior of the pad brick body 1. The anchors 32 are rod-shaped, numbering four, and are symmetrically distributed in a cross shape around the sleeve 31. The sleeve 31 and the anchors 32 are integrally formed from heat-resistant alloy material. Tail pipe channels 41 11 are opened in the middle and at the top of the pad brick. 1. It is connected to the sleeve 31. A breathable brick 4 is provided above the pad brick. The tail tube 41 at the bottom of the breathable brick 4 passes through the channel 11 of the tail tube 41. The puller 2 includes a pull connecting end 21. The bottom of the pull connecting end 21 is connected to the connecting rod 22. The pull connecting end 21 and the connecting rod 22 are hollow tubular and are arranged on the same straight line. The bottom of the connecting rod 22 is vertically connected to the handle 23. The handle 23 is a straight rod. The surface of the pull connecting end 21 is provided with an external thread that matches the internal thread of the sleeve 31. The pull connecting end 21 is screwed and connected to the internal thread in the sleeve 31 through the external thread on its surface, forming a force transmission structure for pulling the pad brick body 1 out of the bottom installation position of the ladle.

[0017] When using this type of steel ladle permeable brick pad with a pre-embedded threaded connection structure, the pull-out connection end 21 is screwed and connected to the sleeve 31. The tail pipe 41 is inserted into the pull-out connection end 21 and the connecting rod 22. After pulling out the pad body 1 by pulling the handle 23, the permeable brick 4 can be replaced. After replacing the permeable brick 4, the pad body 1 is reinstalled. Rotating the handle 23 separates the pull-out connection end 21 and the sleeve 31, and the tail pipe 41 is connected to the air source. This utility model realizes the reuse of the pad body 1, better utilizes the service life of the pad body 1, saves resources, reduces production costs, and simplifies the operation process.

Claims

1. A pad for a ladle purging plug with a pre-embedded threaded connection structure, comprising a pad body (1) and a pad-specific puller (2) matched therewith, characterized in that: The bottom of the pad brick body (1) is fixedly fitted with a threaded connector (3). The threaded connector (3) includes a horizontally arranged sleeve (31). The sleeve (31) has an internal thread. An anchor (32) extends radially on the outer peripheral wall of the sleeve (31). The anchor (32) is embedded in the lower part of the pad brick body (1). The anchor (32) is rod-shaped and there are 3-6 of them symmetrically distributed. The puller (2) includes a pull connection end (21). The bottom of the pull connection end (21) is... Connected to the connecting rod (22), the pull-out connecting end (21) and the connecting rod (22) are hollow tubular and set on the same straight line. The bottom of the connecting rod (22) is vertically connected to the handle (23). The surface of the pull-out connecting end (21) is provided with an external thread that matches the internal thread of the sleeve (31). The pull-out connecting end (21) is screwed and connected to the internal thread inside the sleeve (31) through the external thread on its surface, forming a force transmission structure for pulling the pad brick body (1) out of the bottom installation position of the steel ladle.

2. The pad block for a ladle purging plug with a pre-buried thread connection structure according to claim 1, characterized in that: The number of anchors (32) is 4, and they are symmetrically distributed in a cross shape with the sleeve (31) as the center.

3. The pad block for a ladle purging plug with a pre-buried thread connection structure according to claim 1, characterized in that: The sleeve (31) and the anchor (32) are integrally formed from high-temperature resistant metal materials.

4. The pad block for a ladle purging plug with a pre-buried thread connection structure according to claim 1, characterized in that: The handle (23) is a straight rod, U-shaped or ring structure.

5. The pad block for a ladle gas distribution plug with a pre-buried thread connection structure according to claim 3, characterized in that: The high-temperature resistant metal material is 310S stainless steel or heat-resistant alloy.

6. The pad block for a ladle gas distribution plug with a pre-buried thread connection structure according to claim 1, characterized in that: Tail pipe channels (11) are provided in the middle and top of the pad brick. Tail pipe channels (11) are connected to sleeves (31). A breathable brick (4) is provided above the pad brick. The tail pipe (41) at the bottom of the breathable brick (4) passes through the tail pipe channel (11).

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