Quick-opening type clamping and locking device for oxygen-enriched burner of metallurgical furnace

Abstract

The utility model relates to a quick-opening type clamping and locking device for an oxygen-enriched burner of a metallurgical furnace, which belongs to the field of connecting workpieces and comprises an upper tooth jaw, a lower tooth jaw and a locking component. The left sides of the upper tooth jaw and the lower tooth jaw are connected through a shaft, and the right sides of the upper tooth jaw and the lower tooth jaw are connected through a locking assembly in an opening and closing manner; the locking assembly comprises a locking arc plate, a connecting pin A, a locking buckle, a sliding pin, a connecting pin B and two connecting rods. The locking arc plate is provided with a sliding groove, the sliding pin penetrates through the sliding groove to be connected with the locking arc plate in a sliding mode, the connecting pin A is connected with the lower tooth jaw shaft, and the connecting pin B is connected with the upper tooth jaw shaft. The two connecting rods are respectively connected to two ends of the sliding pin and the connecting pin B; the locking buckle is arranged on the inner side face of the locking arc plate. A rhinoceros angle plate which can be buckled with the locking buckle is arranged at the outer end of the right side of the lower tooth jaw; according to the utility model, the quick clamping of the high-pressure hose and the oxygen lance can be realized, the pressure resistance is strong, the clamping is firm, and the risk that the high-pressure hose and the oxygen lance fall off is greatly reduced or avoided.

Description

Technical Field

[0001] This utility model belongs to the field of connecting workpieces, specifically, it relates to a quick-opening locking device for the oxygen-enriched firing port of a metallurgical furnace. Background Technology

[0002] Metallurgical furnace smelting technology is a pyrometallurgical technique that uses industrial oxygen or highly concentrated oxygen-enriched air to perform flash smelting or pool smelting. It utilizes the exothermic oxidation reaction or the combustion of a small amount of fuel to induce a series of physicochemical reactions in ore or concentrate, transforming some or all of the metallic substances into another form of metallic compound or element, thus achieving the extraction of metallic substances and the separation of impurities. The molten metal product generated during smelting is discharged from the furnace through the product discharge port (commonly known as the siphon), while the impurity slag is discharged through the slag discharge port (commonly known as the slag outlet).

[0003] Currently, there are two main methods for opening metal products and slag in metallurgical furnaces: drilling and excavation using mud guns and oxygen-blown tube smelting. The drilling and excavation method using mud guns is severely limited in application due to its large equipment footprint, high cost, high maintenance costs, limited adaptability, and complex operation. It is not widely used in the pyrometallurgical industry, and is only occasionally applied in industries such as steel and copper smelting; it is rarely used in other smelting industries such as lead and zinc. In contrast, the oxygen-blown tube smelting method is widely used in the smelting industry due to its advantages such as low investment, simple operation, flexible and convenient use, wide applicability, and low maintenance costs. The vast majority of smelting enterprises still use this traditional oxygen-blown tube smelting method for opening metal products and slag.

[0004] The oxygen blowing pipe smelting opening requires the use of industrial pure oxygen or highly concentrated oxygen-enriched air, a high-pressure hose, and an oxygen blowing pipe. One end of the high-pressure hose is connected to the industrial pure oxygen or highly concentrated oxygen-enriched air storage tank or delivery pipeline, and the other end is connected to the oxygen blowing pipe. During operation, the oxygen blowing pipe is first inserted into the high-pressure hose. The operator holds the oxygen blowing pipe and places the end of the oxygen blowing pipe on pre-lit charcoal. The industrial pure oxygen or highly concentrated oxygen-enriched air valve is opened, allowing the industrial pure oxygen or highly concentrated oxygen-enriched air to be delivered to the end of the oxygen blowing pipe through the high-pressure hose. With the combustion aid of the industrial pure oxygen or highly concentrated oxygen-enriched air, the oxygen blowing pipe is ignited. Then, the oxygen blowing pipe is aimed at the exhaust port of the metallurgical kiln, melting and discharging the surrounding solid metal or slag, thereby realizing the discharge of metal products or molten slag.

[0005] The oxygen blasting pipe opening method is simple to operate and flexible to use. However, due to the high working pressure of the high-pressure hose and oxygen blasting pipe, a firm connection is required. Existing connecting parts are difficult to meet this requirement. Either the connection structure is complex and the operation is time-consuming and laborious, or the connection structure is not firm and is prone to falling off. In the process of operation, once the high-pressure hose and oxygen blasting pipe fall off, it is easy to cause burns to the workers due to backfire, which poses a significant safety risk and hazard. Therefore, providing a simple operating part that can achieve a quick and firm connection between the high-pressure hose and oxygen blasting pipe is of positive significance for the oxygen blasting pipe opening method. Summary of the Invention

[0006] In order to overcome the problems existing in the background technology, this utility model provides a quick-opening locking device for oxygen-enriched firing ports of metallurgical furnaces, which can realize the rapid clamping of high-pressure hoses and oxygen blowing pipes, and has strong pressure resistance and firm clamping, greatly reducing or avoiding the risk of high-pressure hoses and oxygen blowing pipes falling off.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0008] The aforementioned quick-opening locking device for the oxygen-enriched firing port of a metallurgical furnace includes an upper jaw, a lower jaw, and a locking assembly. Both the upper and lower jaws are arc-shaped structures that can be enclosed into a ring. The upper and lower jaws are connected by a shaft on the left side and connected by the locking assembly on the right side. The locking assembly includes a locking arc plate, a connecting pin A, a locking buckle, a sliding pin, a connecting pin B, and two connecting rods. The locking arc plate has a groove through which the sliding pin slides and connects to the locking arc plate. Connecting pin A is connected to the shaft of the lower jaw, and connecting pin B is connected to the shaft of the upper jaw. The two connecting rods are respectively connected to the two ends of the sliding pin and the connecting pin B. The locking buckle is located on the inner side of the locking arc plate. The outer right end of the upper jaw has a rhinoceros horn plate that can engage with the locking buckle.

[0009] Preferably, the upper jaw and the lower jaw are respectively provided with an upper tooth ring and a lower tooth ring; the upper tooth ring and the lower tooth ring can be enclosed into a ring, and the inner surfaces of the upper tooth ring and the lower tooth ring are respectively provided with teeth.

[0010] Preferably, the teeth are arranged in at least two rows at intervals.

[0011] Preferably, the upper toothed ring and the lower toothed ring are fixedly connected to the upper jaw and the lower jaw, respectively.

[0012] Preferably, the left sides of the upper jaw and lower jaw are connected by an opening and closing pin.

[0013] Preferably, the opening and closing pin is fitted with a butterfly torsion spring, and the upper and lower jaws are provided with torsion bar grooves.

[0014] The beneficial effects of this utility model are:

[0015] This utility model not only provides a reliable oxygen blowing pipe locking tool for oxygen-enriched firing operations in metallurgical furnaces and kilns, facilitating firing operations and improving firing efficiency, but also effectively avoids the risk of backfire caused by oxygen-enriched gas leakage or loosening of oxygen blowing pipes during firing operations, reducing resource waste and lowering safety risks for operators. It also features a simple structure, compact size, flexible use, convenient operation, easy manufacturing, and low cost. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the upper jaw and upper tooth ring structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the lower jaw and lower tooth ring structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the lower jaw structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the locking component structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the locking arc plate structure of this utility model;

[0022] Figure 7 This is a schematic diagram of the butterfly spring structure of this utility model;

[0023] Figure 8 This is a schematic diagram of the usage state of this utility model;

[0024] In the diagram, 1-upper jaw; 11-upper toothed ring; 12-rhinoceros horn plate; 2-high pressure hose; 3-lower jaw; 31-lower toothed ring; 4-oxygen blowing pipe; 5-locking arc plate; 51-connecting rod; 52-sliding pin; 53-locking buckle; 54-slide groove; 6-opening and closing pin; 7-butterfly torsion spring; 8-connecting pin A; 9-connecting rod pin B; 10-tooth. Detailed Implementation

[0025] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0026] In the description of this utility model, unless otherwise stated, the terms "upper", "lower", "left", "right", etc., indicate the orientation or state relationship based on the orientation or state relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] like Figure 1-8 As shown, the quick-opening locking device for the oxygen-enriched firing port of the metallurgical furnace includes an upper jaw 1, a lower jaw 3, and a locking assembly.

[0029] Both the upper jaw 1 and the lower jaw 3 are arc-shaped structures, which can be closed to form a ring. Pin holes are respectively opened on the left side of the upper jaw 1 and the lower jaw 3, and their left ends are rotatably connected by an opening and closing pin 6. A locking assembly is connected to the right side of the upper jaw 1 and the lower jaw 3. The opening and closing of the upper jaw 1 and the lower jaw 3 are achieved through the opening and closing pin 6 and the locking assembly: when opening or closing, the left ends of the upper jaw 1 and the lower jaw 3 rotate around the opening and closing pin 6. This invention, through the above-mentioned connection structure design of the upper jaw 1 and the lower jaw 3, enables rapid closing and opening, thereby achieving rapid connection and clamping of the high-pressure hose and the oxygen blowing pipe.

[0030] The locking assembly designed in this utility model has strong pressure resistance and can achieve a locking connection for high-pressure pipelines. The locking assembly includes a locking arc plate 5, a connecting pin A8, a locking buckle 53, a sliding pin 52, a connecting pin B9, and two connecting rods 51. The locking buckle 53 is inclined downwards and is located on the inner side of the locking arc plate 5. The locking buckle 53 and the locking arc plate 5 are an integral structure. The outer right side of the upper jaw 1 is provided with a rhinoceros horn plate 12 that can engage with the locking buckle 53. The locking arc plate 5 has a sliding groove 54. The sliding pin 52 passes through the sliding groove 54 and can slide and connect with the locking arc plate 5. The sliding groove 54 allows the sliding pin 52 to move circumferentially along the locking arc plate 5. The connecting pin A8 is connected to the lower jaw 3 shaft, and the connecting pin B9 is connected to the upper jaw 1 shaft. The two connecting rods 51 are respectively connected to the sides of the sliding pin 52 and the connecting pin B9.

[0031] Teeth can be provided on the inner surfaces of the upper jaw 1 and the lower jaw 3 to increase the sealing and clamping of the connected pipe. As a preferred embodiment, the upper jaw 1 and the lower jaw 3 are respectively provided with an upper toothed ring 11 and a lower toothed ring 31, which can be enclosed in a circular ring. Teeth 10 are respectively provided on the inner surfaces of the upper toothed ring 11 and the lower toothed ring 31. By providing the upper toothed ring 11 and the lower toothed ring 31: 1) the thickness of the clamping ring formed by the upper jaw 1 and the lower jaw 3 is increased, increasing the pressure resistance; 2) with the increased thickness, the opening and closing space of the locking buckle connected to the right end of the upper jaw 1 and the lower jaw 3 is increased, increasing the opening degree of the upper jaw 1 and the lower jaw 3, thereby increasing the operating space for clamping or removing the pipe.

[0032] As a preferred embodiment, the teeth on the inner surfaces of the upper toothed ring 11 and the lower toothed ring 31 are arranged in at least two rows at intervals. After clamping the pipe, the clamping surfaces between the upper toothed ring 11 and the lower toothed ring 31 and the pipe form an alternation of toothed clamping sections and smooth clamping sections, which improves the sealing effect of the connecting pipe sleeve section, prevents leakage of the connecting section, and is more suitable for the connection and sealing of high-pressure pipes.

[0033] As a preferred embodiment, the upper toothed ring 11 and the lower toothed ring 31 are fixedly connected to the upper jaw 1 and the lower jaw 3, respectively.

[0034] To facilitate disassembly of this invention, as a preferred embodiment, a butterfly torsion spring 7 is fitted onto the opening / closing pin 6. Torsion bar grooves are respectively formed in the upper jaw 1 and lower jaw 3. These grooves can be located within the upper jaw 1 and lower jaw 3, between the upper jaw 1 and upper toothed ring 11, or between the lower jaw 3 and lower toothed ring 31, or within the upper toothed ring 11 and lower toothed ring 31. The torsion bar grooves are used to insert the two torsion bars of the butterfly torsion spring 7, allowing the torsion bars to slide along the grooves after insertion. By providing the butterfly torsion spring 7, when opening the upper jaw 1 and lower jaw 3, the upper jaw 1 and lower jaw 3 open more easily or automatically under the action of the butterfly spring 7.

[0035] Application examples of this utility model are demonstrated below:

[0036] (1) Assembly and engagement of the high-pressure hose and oxygen blowing tube in this utility model:

[0037] This utility model is assembled from an upper jaw 1, a lower jaw 3, a locking assembly, an opening and closing pin 6, a disc spring 7, a connecting pin A8, and a connecting rod pin B9. The outer cylindrical surface of the upper toothed ring 11 is welded and fixed to the inner cylindrical surface of the upper jaw 1, and the outer cylindrical surface of the lower toothed ring 31 is welded and fixed to the inner cylindrical surface of the lower jaw 3. The upper jaw 1 and lower jaw 3 are closed together. The disc spring 7 is installed in the groove at the left end of the upper jaw 1 and lower jaw 3. The opening and closing pin 6 passes through the pin holes at the left ends of the lower jaw 3 and upper jaw 1, and the inner hole of the disc spring 7, thus connecting the upper jaw 1, lower jaw 3, and disc spring 7 into a single unit. The sliding pin 52 is inserted into the pin hole at the right end of the connecting rod 51 and the sliding groove 54 in the middle of the locking arc plate 5, thus connecting the connecting rod 51 to both sides of the locking arc plate 5 to form the locking assembly. Insert the connecting pin A8 into the pin hole at the right end of the lower jaw 3 and the pin hole at the lower end of the locking arc plate 5, so that the locking arc plate 5 is connected to the lower jaw 3; insert the connecting rod pin B9 into the pin hole at the left end of the connecting rod 51 and the pin hole at the right end of the upper jaw 1, so that the connecting rod 51 is connected to the upper jaw 1, and the quick-opening locking device is assembled.

[0038] Insert the high-pressure hose 2 into the middle of the upper toothed ring 11 and the lower toothed ring 31. Then insert one end of the oxygen blowing pipe 4 into the high-pressure hose 2. Move the upper toothed ring 11 and the lower toothed ring 31 to the joint between the high-pressure hose 2 and the oxygen blowing pipe 4. Turn the locking arc plate 5 so that the locking buckle 53 is engaged with the rhinoceros horn plate 12 on the right end of the upper jaw 1. The upper jaw 1 and the lower jaw 3 are locked together, and the oxygen blowing pipe 4 is clamped in the high-pressure hose 2. Hold the locking device and place the other end of the oxygen blowing pipe 4 on the burning charcoal fire. Open the industrial pure oxygen or high-concentration oxygen-enriched air valve to ignite the oxygen blowing pipe 4. Point the burning oxygen blowing pipe 4 at the ISA furnace or the slag discharge port of the side-blown reduction furnace to melt the solid slag at the discharge port until the molten slag in the furnace flows out.

[0039] (2) Disassembly of this utility model:

[0040] Close the industrial pure oxygen or high-concentration oxygen-enriched air valve, reverse the locking arc plate 5, so that the locking buckle 53 of the locking assembly disengages from the rhinoceros horn plate 12 of the upper jaw 1, and the upper jaw 1 and lower jaw 3 open under the action of the butterfly spring 7; pull out the remaining oxygen blowing tube 4 from the high-pressure hose 2, and the burning operation is completed.

[0041] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A quick opening lock device for oxygen enriched firing of metallurgical furnace, characterized in that, It includes an upper jaw (1), a lower jaw (3), and a locking assembly; both the upper jaw (1) and the lower jaw (3) are arc structures, which can be enclosed into a ring; the left side of the upper jaw (1) and the lower jaw (3) are connected by a shaft, and the right side is connected by a locking assembly that can be opened and closed; the locking assembly includes a locking arc plate (5), a connecting pin A (8), a locking buckle (53), a sliding pin (52), a connecting pin B (9), and two connecting rods (51); the locking arc plate (5) has a sliding groove (54). The sliding pin (52) passes through the sliding groove (54) and can be slidably connected to the locking arc plate (5). The connecting pin A (8) is connected to the lower jaw (3) shaft, and the connecting pin B (9) is connected to the upper jaw (1) shaft. Two connecting rods (51) are respectively connected to the two sides of the sliding pin (52) and the connecting pin B (9). The locking buckle (53) is set on the inner side of the locking arc plate (5). The right outer end of the upper jaw (1) is provided with a rhinoceros horn plate (12) that can be engaged with the locking buckle (53).

2. A quick opening lock latch device for oxygen enriched tapping of metallurgical furnaces as claimed in claim 1 wherein, The upper jaw (1) and lower jaw (3) are respectively provided with an upper tooth ring (11) and a lower tooth ring (31); the upper tooth ring (11) and the lower tooth ring (31) can be enclosed into a ring, and teeth (10) are respectively opened on the inner side of the upper tooth ring (11) and the lower tooth ring (31).

3. A quick opening lock latch for oxygen enriched tapping of metallurgical furnaces, according to claim 2, characterized in that, The teeth are arranged in at least two rows at intervals.

4. A quick opening lock latch device for oxygen enriched tapping of metallurgical furnaces as claimed in claim 2 wherein, The upper toothed ring (11) and the lower toothed ring (31) are fixedly connected to the upper jaw (1) and the lower jaw (3), respectively.

5. A quick opening lock latch device for oxygen enriched tapping of metallurgical furnaces according to any one of claims 1 to 4, characterized in that, The left sides of the upper jaw (1) and lower jaw (3) are connected by an opening and closing pin (6).

6. A quick opening lock latch for oxygen enriched tapping of metallurgical furnaces, according to claim 5, characterized in that, The opening and closing pin (6) is fitted with a butterfly torsion spring (7), and the upper jaw (1) and lower jaw (3) are provided with torsion bar grooves.

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