Spray gun device of multi-gun top-blown furnace

Abstract

The utility model relates to a spray gun device of a multi-gun top-blown furnace, which comprises a lifting mechanism, a rotating mechanism, a first gun body and a second gun body, the lifting mechanism is connected with the rotating mechanism through a first steel wire rope, and the first gun body is connected with the rotating mechanism; a connector is arranged at the bottom end of the first gun body; the joint is provided with an inner hole; the first gun body is inserted into an inner hole of the connector; a concave part is formed in the inner hole of the joint in the circumferential direction; a convex part corresponding to the concave part is arranged on the first gun body; the convex part is arranged in the concave part; an internal thread is arranged on the inner hole wall below the concave part; the top end of the second gun body is provided with an external thread. Due to the fact that the connector, the second gun body and the first gun body are fixed, when the second gun body is replaced, the second gun body can be separated from the connector only by rotating the connector and moving the connector upwards, gun replacing time is shortened, and production operation efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of top-blown furnace equipment, and specifically relates to a multi-gun top-blown furnace spray gun device. Background Technology

[0002] Currently, in the smelting of crude copper, the multi-gun top-blown furnace is a metallurgical device that uses multiple spray guns at the top to inject gas or oxygen. In the existing technology, the spray gun device mainly consists of a lifting device, a rotating device, and spray guns. The lifting device includes a hoisting device, and the wire rope of the hoisting device is connected to the rotating device. The spray guns are connected to the rotating device, and the bottom end of the spray guns is inserted into the top-blown furnace.

[0003] The inventors discovered the following problems with the above-mentioned spray gun device during actual production: Firstly, because one end of the spray gun extends into the top-blown furnace, the spray gun in the top-blown furnace will gradually burn out and be easily blocked under prolonged high temperature, thus requiring replacement. Generally, the two spray gun sections are connected by a connecting nut. When replacement is needed, the connecting nut is rotated to remove the connecting nut and the lower spray gun section, and then the connecting nut is rotated again to remove the connecting nut and replace the lower spray gun section. This structure results in a long gun replacement time, affecting production efficiency. Secondly, during actual production, the slag formed by the molten material splashing in the top-blown furnace will stick to the spray gun in the top-blown furnace, causing a significant increase in the weight of the entire spray gun structure. This can easily exceed the load-bearing capacity of the original design structure of the spray gun system, thus causing the hoisting wire rope to break and the entire rotating device to fall onto the top-blown furnace cover, resulting in a major production stoppage accident and serious personal and equipment safety hazards. Utility Model Content

[0004] The purpose of this invention is to provide a multi-gun top-blown furnace spray gun device, which shortens the gun changing time and speeds up production efficiency.

[0005] To achieve the above objectives, the present invention provides a multi-gun top-blown furnace spray gun device, comprising a lifting mechanism, a rotating mechanism, a first gun body, and a second gun body. The lifting mechanism is connected to the rotating mechanism via a first steel wire rope, and the first gun body is connected to the rotating mechanism.

[0006] The first gun body has a connector at its bottom end; the connector has an inner hole; the first gun body is inserted into the inner hole of the connector; the inner hole of the connector has a recessed portion circumferentially; the first gun body has a protrusion corresponding to the recessed portion; the protrusion is disposed in the recessed portion; the outer wall of the first gun body is in contact with the inner hole wall above the recessed portion; the inner hole wall below the recessed portion has an internal thread; the top end of the second gun body has an external thread, and the external thread at the top end of the second gun body is connected to the internal thread of the inner hole wall of the connector.

[0007] Preferably, the bottom end of the second gun body is threadedly connected to a third gun body.

[0008] Preferably, at least one limiting rod is symmetrically fixed on both sides of the reducer of the rotating mechanism; the limiting rods on both sides of the reducer extend toward the guide rails on the side of the reducer.

[0009] Preferably, the end of the first wire rope away from the lifting mechanism is connected to a U-shaped rope buckle; the U-shaped rope buckle is connected to two pull rods; the two pull rods form an inverted Y shape with the first wire rope and the U-shaped rope buckle, and the ends of the two pull rods away from the U-shaped rope buckle are both connected to the top of the reducer of the rotating mechanism.

[0010] Preferably, a second wire rope is provided on one side of the first wire rope above the rotating mechanism; the second wire rope is fixed to the first wire rope by at least one wire rope clamp, and the bottom end of the second wire rope extends obliquely downward and is connected to the top of the reducer.

[0011] Preferably, a lifting belt is fixed to the reducer; the end of the lifting belt away from the reducer is fixed to the working platform above the reducer; the length of the lifting belt is greater than the distance from the working platform to the reducer when it is lowered to its lowest position.

[0012] This utility model provides a multi-gun top-blown furnace spray gun device, which has the following advantages compared with the prior art:

[0013] (1) The second gun body is fixed to the first gun body through the connector. When replacing the second gun body, simply rotate the connector and move the connector upwards. The second gun body can then be separated from the connector, which shortens the gun replacement time. Furthermore, the connector cannot be separated from the first gun body through the recessed part, thus preventing the connector from being lost during gun replacement.

[0014] (2) The reducer is clamped on both sides of the guide rail by the limit rods on both sides of the reducer, so as to prevent the reducer from twisting and shifting during the lifting process;

[0015] (3) By using U-shaped rope buckles and two tie rods, the risk of local stress concentration in the reducer is reduced, local stress is dispersed, and structural stability is ensured;

[0016] (4) The lifting belt 24 ensures that the rotating device can exert a pulling force when it falls, preventing it from falling to the top of the furnace cover and injuring people and damaging the equipment, thus further improving the safety of the spray gun. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connector structure;

[0019] Figure 3This is a schematic diagram of the structure of the second specific embodiment. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] The first specific embodiment of the multi-gun top-blown furnace spray gun device of this utility model:

[0022] like Figure 1 As shown, a multi-gun top-blown furnace spray gun device includes a lifting mechanism 1, a rotating mechanism, a first gun body 31, and a second gun body 32.

[0023] The lifting mechanism 1 is connected to the rotating mechanism via a first wire rope 11. The lifting mechanism 1 includes a winch device and a pulley device. The winch device and the pulley device are set on the working platform. Two first wire ropes 11 are wound on the drum of the winch device. The first wire ropes 11 are connected to the rotating mechanism via the pulley device. The winch device's drum is driven to rotate by the motor of the winch device, causing the rotating mechanism to move up and down.

[0024] The first gun body 31 is connected to a rotating mechanism, which drives the first gun body 31 to rotate. The rotating mechanism includes a reducer 21, and a first steel wire rope 11 is connected to the reducer 21. A guide rail 22 is provided on one side of the reducer 21, and a roller is provided inside the guide rail 22. The roller is rotatably connected to the reducer 21, so that the reducer 21 can move up and down inside the guide rail 22. A reduction motor is installed on the reducer 21, and the first gun body 31 is connected to the output gear of the reducer 21. The reducer 21 drives the first gun body 31 to rotate. The reducer 21 is also provided with an air pipe, which can be connected to the first gun body 31 on the output gear of the reducer 21 through a rotary joint. The air pipe is also connected to an external air source to introduce gas into the first gun body 31.

[0025] like Figure 1 and 2As shown, the first gun body 31 has a connector 4 at its bottom end; the connector 4 has an inner hole; the first gun body 31 is inserted into the inner hole of the connector 4; the inner hole of the connector 4 has a recessed portion 41 circumferentially formed; the first gun body 31 has a protrusion 311 corresponding to the recessed portion 41; the protrusion 311 is disposed in the recessed portion 41, so that the connector 4 cannot detach from the first gun body 31. The connector 4 and the first gun body 31 can be made of carbon steel, and the connector 4 and the first gun body 31 are connected together. Used as a set; the outer wall of the first gun body 31 is in contact with the inner wall above the recess 41; an internal thread is provided on the inner wall below the recess 41; an external thread is provided at the top of the second gun body 32, and the external thread at the top of the second gun body 32 is connected to the internal thread of the inner wall of the connector 4, so that the second gun body 32 is connected to the connector 4, and a part of the second gun body 32 is inserted into the top blow furnace to input gas into the top blow furnace, wherein the inner diameter of the first gun body 31 below the protrusion 311 is the same as the inner diameter of the second gun body 32;

[0026] When replacing the second gun body 32, rotate the connector 4, and the connector 4 moves upward, separating the second gun body 32 from the connector 4. Then, align the new second gun body 32 with the bottom end of the first gun body 31, rotate the connector 4, and the connector 4 seat moves downward, fixing the second gun body 32 to the first gun body 31. This shortens the gun replacement time, and through the recess 41, the connector 4 cannot detach from the first gun body 31, preventing the connector 4 from being lost during gun replacement.

[0027] The lifting mechanism 1 causes the first gun body 31 and the second gun body 32 to move up and down relative to the molten pool in the furnace, so as to better smelt metal. When the second gun body 32 is working in the working position for a long time, the splashing of molten metal in the top-blown furnace will cause the second gun body 32 to stick to the furnace cover of the top-blown furnace to a certain extent. When the first gun body 31 and the second gun body 32 need to move up and down, this sticking will hinder the lifting action. In severe cases, it may even jam the first gun body 31 and the second gun body 32 and prevent them from moving. The rotating mechanism drives the first gun body 31 and the second gun body 32 to rotate, so that the second gun body 32 does not stick to the furnace cover of the top-blown furnace.

[0028] In this embodiment, the bottom end of the second gun body 32 is threadedly connected to the third gun body 33. The second gun body 32 and the third gun body 33 are stainless steel gun barrels. As the third gun body 33 is continuously worn down in the top-blown furnace, the lifting mechanism 1 drives the first gun body 31, the second gun body 32 and the third gun body 33 to slowly descend until they reach the lowest point. By setting the third gun body 33, the second gun body 32 can be separated from the connector 4. A new gun body can be added between the old second gun body 32 and the connector 4, so that the old second gun body 32 becomes the third gun body 33 and the new gun body becomes the second gun body 32. This allows the second gun body 32 and the third gun body 33 to be worn down sequentially without having to pull the second gun body 32 out of the furnace.

[0029] Due to the long vertical movement distance during the lowering process, the high low-speed torque of the reducer 21 in the rotating mechanism makes the rotating mechanism prone to derailment.

[0030] In this embodiment, at least one limiting rod 23 is symmetrically fixed on both sides of the reducer 21 of the rotating mechanism; the limiting rods 23 on both sides of the reducer 21 extend to both sides of the guide rail 22 on the side of the reducer 21, and are clamped on both sides of the guide rail 22 by the limiting rods 23 on both sides of the reducer 21, thereby preventing the reducer 21 from twisting and shifting during the lifting process.

[0031] The second specific embodiment of the multi-gun top-blown furnace spray gun device of this utility model:

[0032] like Figure 3 As shown, the end of the first wire rope 11 away from the lifting mechanism 1 is connected to a U-shaped rope buckle 111; the U-shaped rope buckle 111 is connected to two pull rods 112; the two pull rods 112 form an inverted Y shape with the first wire rope 11 and the U-shaped rope buckle 111, and the ends of the two pull rods 112 away from the U-shaped rope buckle 111 are connected to the top of the reducer 21 of the rotating mechanism. On the one hand, the specifications of the first wire rope 11 are changed to improve the load-bearing capacity of the first wire rope 11 itself. On the other hand, the U-shaped rope buckle 111 and the two pull rods 112 reduce the risk of local stress concentration in the reducer 21, disperse local stress, and ensure structural stability. Other features are the same as in the first specific embodiment.

[0033] In this embodiment, a second wire rope 113 is provided on one side of the first wire rope 11 above the rotating mechanism; the second wire rope 113 is fixed to the first wire rope 11 by at least one wire rope clamp 114, and the bottom end of the second wire rope 113 extends obliquely downward and is connected to the top of the reducer 21. Through the second wire rope 113, the risk of local stress concentration in the reducer 21 is further reduced and local stress is dispersed.

[0034] In this embodiment, a lifting belt 24 is fixed on the reducer 21; the end of the lifting belt 24 away from the reducer 21 is fixed to the working platform above the reducer 21; the length of the lifting belt 24 is greater than the distance from the working platform to the reducer 21 when it is lowered to its lowest position. During normal operation, the lifting belt 24 is not under stress and is in a relaxed state. When the first wire rope 11 breaks, the lifting belt 24 ensures that the rotating device can exert a pulling force when it falls, preventing it from falling to the top of the furnace cover and injuring people and damaging equipment, and further improving the safety of the spray gun.

Claims

1. A multi-gun top-blown furnace spray gun device, comprising a lifting mechanism (1), a rotating mechanism, a first gun body (31) and a second gun body (32), wherein the lifting mechanism (1) is connected to the rotating mechanism via a first steel wire rope (11), and the first gun body (31) is connected to the rotating mechanism; Its features are, The first gun body (31) has a connector (4) at its bottom end; the connector (4) has an inner hole; the first gun body (31) is inserted into the inner hole of the connector (4); the inner hole of the connector (4) has a recess (41) circumferentially formed; the first gun body (31) has a protrusion (311) corresponding to the recess (41); the protrusion (311) is set in the recess (41); the outer wall of the first gun body (31) is in contact with the inner hole wall above the recess (41); the inner hole wall below the recess (41) has an internal thread; the top of the second gun body (32) has an external thread, and the external thread at the top of the second gun body (32) is connected to the internal thread of the inner hole wall of the connector (4).

2. The multi-gun top-blown furnace spray gun device according to claim 1, characterized in that, The bottom end of the second gun body (32) is threadedly connected to the third gun body (33).

3. The multi-gun top-blown furnace spray gun device according to claim 1, characterized in that, At least one limiting rod (23) is symmetrically fixed on both sides of the reducer (21) of the rotating mechanism; the limiting rods (23) on both sides of the reducer (21) extend to both sides of the guide rail (22) on the side of the reducer (21).

4. The multi-gun top-blown furnace spray gun device according to claim 1, characterized in that, The end of the first wire rope (11) away from the lifting mechanism (1) is connected to a U-shaped rope buckle (111); the U-shaped rope buckle (111) is connected to two pull rods (112); the two pull rods (112) form an inverted Y shape with the first wire rope (11) and the U-shaped rope buckle (111), and the ends of the two pull rods (112) away from the U-shaped rope buckle (111) are connected to the top of the reducer (21) of the rotating mechanism.

5. The multi-gun top-blown furnace spray gun device according to claim 1 or 4, characterized in that, A second wire rope (113) is provided on one side of the first wire rope (11) above the rotating mechanism; the second wire rope (113) is fixed to the first wire rope (11) by at least one wire rope clamp (114), and the bottom end of the second wire rope (113) extends obliquely downward and is connected to the top of the reducer (21).

6. The multi-gun top-blown furnace spray gun device according to claim 4, characterized in that, A lifting belt (24) is fixed on the reducer (21); the end of the lifting belt (24) away from the reducer (21) is fixed to the working platform above the reducer (21); the length of the lifting belt (24) is greater than the distance from the working platform to the reducer (21) when it is lowered to its lowest position.

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