Furnace top charging port device of reverberatory furnace

Abstract

The utility model provides a reverberatory furnace top feed inlet device which comprises a feed inlet inner wall and a feed inlet outer wall, the feed inlet inner wall is a cuboid, the feed inlet outer wall is a trapezoid, a plurality of reinforcing rib plates are arranged between the feed inlet inner wall and the feed inlet outer wall, an upper sealing plate is arranged above the feed inlet, and a lower sealing plate is arranged above the feed inlet. An interlayer is arranged between the inner wall of the feeding port at the bottom of the feeding port and the outer wall of the feeding port, a lower sealing plate is arranged between the interlayer and the water cooling part, a burning loss prevention device is arranged in the interlayer, and a feeding port circulating water pipe is connected with the upper sealing plate and the lower sealing plate through holes. By changing the structure of the feeding port and changing the appearance of the feeding port into the inverted trapezoidal structure, when the feeding port device is replaced, surrounding refractory materials are basically not affected, the using effect of the feeding port device and refractory bricks is guaranteed, the reinforcing rib plates are additionally arranged in the feeding port device, and the problem that using is affected due to burning loss of the feeding port is solved. And the burning loss prevention device is arranged at the bottom of the feeding opening, so that the production requirement is better met.

Description

Technical Field

[0001] The utility model belongs to the technical field of smelting equipment, and particularly relates to a charging port device for the top of a reverberatory furnace. Background Art

[0002] The reverberatory furnace is a very important process in the lead smelting industry, mainly used for treating copper dross generated by the copper removal post. The charging port device of the reverberatory furnace is located directly above the furnace body, and a hopper is used to periodically charge the reverberatory furnace on the top furnace operation platform. The charging port device is supplied with circulating cooling water by a pump room to ensure its normal operation.

[0003] The inner and outer walls of the original charging port device used are both rectangular structures, sealed up and down with sealing plates, and "point-shaped" reinforcement is carried out between the inner and outer walls of the charging port device using Ф12 round steel. Affected by the structure of the charging port device itself, after long-term use, problems such as burning damage, deformation, and water leakage often occur. When replacing the charging port device, due to the vertical edges of its outer wall, the refractory bricks around the charging port device will become loose when pulled upward, affecting the service life of the furnace bricks of the reverberatory furnace, and the newly installed charging port device cannot be effectively protected either.

[0004] In response to the problems existing in the use of the charging port device of the reverberatory furnace, through communication and learning with the same industry, the structure of the charging port device was rectified. The entire charging port device was replaced with heat-resistant cast iron material, cast in place with buried pipes, and the circulating water pipes were changed from two inlets and two outlets to four inlets and four outlets. This structural mode did not solve the problems of deformation and water leakage in the use of the charging port device, nor did it solve the problem of loosening of refractory bricks caused when replacing the charging port device.

[0005] After using for a period of time, it was found that the cast charging port device has problems of thermal deformation on each surface, which not only affects the charging of the reverberatory furnace, but also brings certain safety hazards to the operation of the overall system. Moreover, the overall weight of the cast charging port device is too heavy, which also poses a safety hazard to the surrounding steel structure supports.

[0006] The invention patent with the publication number of "CN109282647A, a charging port device for a metallurgical furnace" specifically discloses a charging port device for a metallurgical furnace. The charging port device includes: a charging port water jacket, and a charging port axially penetrating through the charging port water jacket is formed therein. A buried copper pipe, which is cast around the charging port in the charging port water jacket to cool the charging port. According to the charging port device for a metallurgical furnace of the present invention, it can not only cool the charging port, but also facilitate the cleaning of the inner wall surface of the charging port, and can reduce or avoid the occurrence of water leakage accidents, reduce the explosion risk, and also reduce the operation of stopping the material for maintenance, improving the operation rate of the metallurgical furnace. The charging port device for a metallurgical furnace mentioned in this invention patent does not solve the problem that the support point is deformed due to the overweight of the whole casting solid structure of the charging port device, and at the same time does not solve the problem of the loosening and damage of the refractory bricks caused by replacing the charging port.

[0007] The invention patent with the publication number of "CN108917404A, a charging port device for a metallurgical furnace" specifically discloses a charging port device for a metallurgical furnace. The charging port device for a smelting furnace includes a charging port water jacket and an impact-resistant inner pipe sleeve. A charging port and a cooling cavity located outside the charging port are defined in the charging port water jacket. The charging port water jacket is provided with a water inlet and a water outlet communicating with the cooling cavity; The impact-resistant inner pipe sleeve is detachably arranged on the charging port water jacket and at least a part of it extends into the charging port and fits with the inner wall of the charging port. A feeding port is defined in the impact-resistant inner pipe sleeve. According to the charging port device for a smelting furnace of the embodiments of the present invention, during the cleaning process, it can prevent the coolant in the cooling cavity from leaking due to the charging port water jacket being punched through due to vigorous cleaning, improving the working efficiency and safety of the smelting furnace. The charging port device for a metallurgical furnace mentioned in this invention patent does not solve the problem of the burnout of the bottom of the charging port device, and at the same time does not solve the problem that the inner part of the charging port device lacks stiffening ribs and is prone to deformation at high temperatures. Utility Model Content

[0008] The present utility model provides a charging port device for the top of a reverberatory furnace to solve the above problems.

[0009] The technical solution of the present utility model is realized as follows: A charging port device for the top of a reverberatory furnace includes an inner wall of the charging port and an outer wall of the charging port. The inner wall of the charging port is a cuboid, and the outer wall of the charging port is a frustum of a pyramid. A plurality of stiffening ribs are provided between the inner wall of the charging port and the outer wall of the charging port. An upper sealing plate is provided above the charging port. A sandwich layer is provided between the inner wall of the charging port and the outer wall of the charging port at the bottom of the charging port. A lower sealing plate is provided between the sandwich layer and the water cooling part. An anti-burnout device is provided in the sandwich layer. The charging port circulating water pipe is connected to the openings of the upper sealing plate and the lower sealing plate.

[0010] Preferably, the outer wall surface of the feeding port is in the shape of an inverted trapezoid, and the angle between the straight side and the inclined side is 7°;

[0011] Preferably, the anti-burning device includes anchor rods uniformly fixed inside the interlayer and high-strength refractory castable filled inside the interlayer.

[0012] The beneficial effects of the present utility model are as follows: By changing the structure of the feeding port and changing the shape of the feeding port to an inverted trapezoid structure, when replacing the feeding port device, it will basically not affect the surrounding refractory materials, ensuring the use effects of the feeding port device and refractory bricks. At the same time, in order to prevent deformation problems on the side walls of the feeding port, stiffening ribs are added inside it. In order to prevent the problem that the use of the feeding port is affected by burning damage, an anti-burning device is provided at the bottom of the feeding port, which better meets the production needs. Description of the Drawings

[0013] Figure 1 is a partial sectional view of the structure of the present utility model;

[0014] Figure 2 is a front view of the present utility model;

[0015] Figure 3 is Figure 1 the sectional view at A-A in

[0016] In the drawings, the list of components represented by each reference numeral is as follows:

[0017] 1. Inner wall of the feeding port; 2. Outer wall of the feeding port; 3. Circulating water pipe of the feeding port; 4. Upper sealing plate; 5. Stiffening rib; 6. Lower sealing plate, 7. Anti-burning device. Detailed Embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0020] Refer to the attached Figures 1-3(The base is not shown in the figures). A charging port device for the top of a reverberatory furnace, comprising an inner wall 1 of the charging port and an outer wall 2 of the charging port. The inner wall 1 of the charging port is in the shape of a cuboid, and the surface of the outer wall 2 of the charging port is in the shape of an inverted frustum of a pyramid, with an angle of 7° between the straight edge and the inclined edge. There are 8 reinforcing rib plates 5 provided between the inner wall 1 of the charging port and the outer wall 2 of the charging port, with 2 plates in each direction. A top sealing plate 4 is provided above the charging port. A sandwich layer is provided between the inner wall 1 of the charging port and the outer wall 2 of the charging port at the bottom of the charging port. A bottom sealing plate 6 is provided between the sandwich layer and the water-cooled part. An anti-burning device 7 is provided in the sandwich layer. The charging port circulating water pipe 3 is connected to the top sealing plate 4 and the bottom sealing plate 6 through openings. The top and bottom between the inner wall 1 of the charging port and the outer wall 2 of the charging port are sealed by the top sealing plate and the bottom sealing plate.

[0021] The anti-burning device 7 is such that a height of 150 mm is reserved at the bottom of the charging port, a sandwich layer is formed between the inner wall and the outer wall of the charging port, and the sandwich layer and the water-cooled part are separated by the bottom sealing plate 6. "Anchor rods" are made of Ф12 round steel and are welded and installed evenly inside the sandwich layer. High-strength refractory castable is filled inside the sandwich layer. In this way, during use, the fire-facing surface of the charging port is this anti-burning device, which can effectively avoid the problem of burning damage to the water-cooled part of the charging port.

[0022] By using the inner wall 1 of the charging port, the outer wall 2 of the charging port, the charging port circulating water pipe 3, the sealing plate 4 on the charging port, the reinforcing rib plate 5, and the bottom sealing plate 6 of the charging port to form a sealed charging port water jacket, while ensuring the use effect, the problem of damage to the refractory material caused by the replacement of the charging port device is solved.

[0023] During use, when building the reverberatory furnace, hoist the charging port device to the installation position and fix it firmly. According to the outer shape structure of the charging port device, build refractory bricks around the charging port device so that the refractory bricks are tightly attached to the charging port device. Connect two-way circulating water pipes. Since the outer wall of the charging port device is in the shape of an inverted frustum of a pyramid, an "inverted V" shape is formed after the refractory bricks are built. In this way, when replacing the water jacket, the surrounding refractory material can be protected to the greatest extent from being affected.

[0024] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A charging port device for the top of a reverberatory furnace, comprising an inner wall (1) of the charging port and an outer wall (2) of the charging port, characterized in that The inner wall (1) of the feeding port is a cuboid, the outer wall (2) of the feeding port is a frustum of a pyramid, a plurality of reinforcing rib plates (5) are arranged between the inner wall (1) and the outer wall (2) of the feeding port, an upper sealing plate (4) is arranged above the feeding port, a sandwich layer is arranged between the inner wall (1) and the outer wall (2) of the feeding port at the bottom of the feeding port, a lower sealing plate (6) is arranged between the sandwich layer and the water-cooling part, an anti-burning device (7) is arranged in the sandwich layer, and the feeding port circulating water pipe (3) is connected with the upper sealing plate (4) and the lower sealing plate (6) through openings.

2. The device for the charging port on the roof of a reverberatory furnace according to claim 1, characterized in that The surface of the outer wall (2) of the feeding port is in the shape of an inverted frustum of a pyramid, and the angle between the straight edge and the inclined edge is 7°.

3. The charging port device for the roof of a reverberatory furnace according to claim 1 or 2, characterized in that The anti-burning device (7) includes anchor rods uniformly fixed inside the sandwich layer and high-strength refractory castable filled inside the sandwich layer.

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