Furnace smoke hood feeding door and anode furnace with same

Abstract

The utility model belongs to the technical field of anode furnace equipment, and particularly relates to a furnace smoke hood feeding door and an anode furnace with the same. The door columns on the two sides of the feeding door of the furnace smoke hood are innovatively changed into the hollow cooling water columns, the cooling water jacket is arranged on the upper cross beam, and meanwhile, a cooling water system is matched, so that cooling water can be continuously introduced into the cooling water columns and the cooling water jacket during use, the temperature of the door plates and refractory materials on the peripheral side walls is reduced, and the service life of the furnace smoke hood is prolonged. Overheating deformation of the door plate and surrounding refractory materials can be effectively prevented, and the service life of the smoke hood is prolonged. The structure of the upper cross beam is improved, the horizontal end of the upper cross beam supports the refractory material layers on the two sides of the vertical end, the horizontal end of the upper cross beam can play a role in manufacturing the refractory material located above the horizontal end, and the problem that the refractory material locally falls off due to deformation, high-temperature scouring, corrosion and the like of the refractory material above can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of anode furnace equipment, and particularly relates to a furnace smoke hood feeding door and an anode furnace with the smoke hood feeding door. Background Art

[0002] The anode furnace smelting process is to remove most of the impurities from the blister copper (containing more than 98.5% copper, and containing iron, nickel, arsenic, antimony, bismuth, sulfur, oxygen and precious metal impurities) in the blowing furnace through a fire refining process, and increase its copper content to more than 99.3%. The refining process is completed in a rotary anode furnace, and is specifically divided into five stages: feeding, oxidation, slag pouring, reduction, and casting. The main reaction processes in the anode furnace include oxidation and reduction. During the oxidation and reduction processes, a large amount of high-temperature flue gas will be generated, which will enter the desulfurization system through the anode furnace hood and flue. In order to facilitate the feeding of the anode furnace and the replacement of the chute, a feed port door is usually provided in the lower center of the anode furnace hood. During the smelting process, the high-temperature flue gas can easily cause the feed port door structure and body to deform, causing the refractory material to fall off, reducing the life of the hood, and increasing the cost of repairing and replacing the hood. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides a furnace smoke hood feeding door and an anode furnace with a smoke hood feeding door, which specifically includes the following contents:

[0004] A furnace smoke hood feeding door includes two water-cooling columns, an upper crossbeam, a door body, and a cooling water system.

[0005] The two water-cooling columns are arranged parallel to each other in the vertical direction; the water-cooling columns are hollow columnar structures, the lower end of the water-cooling columns is provided with a first water inlet, and the upper end of the water-cooling columns is provided with a first water outlet;

[0006] The upper crossbeam is horizontally arranged above the two water-cooling columns, and the upper crossbeam and the two water-cooling columns together form a feed door frame; the upper crossbeam includes a fixed support beam and two cooling water jackets, the cross section of the fixed support beam is an inverted "T" shape, and the two cooling water jackets are connected in an "I" shape and are arranged below the fixed support beam and connected to the bottom of the fixed support beam; a water channel is arranged inside the cooling water jacket, and a second water inlet and a second water outlet connected to the water channel are arranged outside the cooling water jacket, and the second water inlets of the two cooling water jackets are respectively connected to the first water outlets of the two water-cooling columns;

[0007] The door body is arranged in the feeding door frame; the door body includes two door panels arranged opposite to each other, and the two door panels are respectively connected to two water-cooling columns by hinges; the bottoms of the two door panels are adjacent to each other and a feeding notch is provided, and the feeding notches of the two door panels together constitute a feeding port;

[0008] The cooling water system includes a water supply main, a return water main, two water supply branches, and two return water branches. The water supply main is connected to the first water inlets of the two water-cooling columns through the two water supply branches; the return water main is connected to the second water outlets of the two cooling water jackets through the two return water branches.

[0009] Furthermore, the door panel includes a panel surface, chamfered reinforcement plates arranged on the edges around the front of the panel surface, multiple anchor nails, and a refractory material layer, and the refractory material layer is arranged on the back of the panel surface; one end of the anchor nail is connected to the back of the panel surface, and the other end extends into the refractory material layer for fixing the refractory material layer.

[0010] Furthermore, the fixed support beam includes a horizontal beam and a vertical beam, the bottom of the vertical beam is vertically connected to the middle of the horizontal beam, and the two together constitute a fixed support beam with an inverted "T"-shaped cross-section; a plurality of first reinforcing ribs are also provided on both sides of the vertical beam, and the first reinforcing ribs are respectively vertically connected to the vertical beam and the horizontal beam.

[0011] Furthermore, the cross-section of the cooling water jacket is rectangular, the width of the cooling water jacket is not less than the width of the horizontal beam of the fixed support beam, the upper surface of the cooling water jacket is fitted under the horizontal beam, and is fixedly connected to the horizontal beam by multiple sets of bolts and nuts.

[0012] Furthermore, the two water supply branch pipes are respectively provided with a first regulating valve; the two water return branch pipes are respectively provided with a second regulating valve.

[0013] Furthermore, the first regulating valve is a manual ball valve, and the second regulating valve is a manual gate valve; and the two return water branches are respectively provided with temperature detection devices.

[0014] Furthermore, the water-cooling column, door body, and fixed support beam are all made of steel, and the cooling water jacket is a copper cooling water jacket.

[0015] An anode furnace with the furnace smoke hood feeding door is provided. The furnace smoke hood feeding door is embedded and installed in the anode furnace smoke hood feeding port. The feeding chute is arranged through the feeding port between two door panels.

[0016] Furthermore, the vertical end of the fixed support beam with an inverted "T"-shaped cross-section is embedded in the side wall at the top of the anode furnace smoke hood feed port, and the horizontal end supports the refractory material layer on both sides of the vertical end; the two water-cooling columns are embedded and installed on the side walls on both sides of the anode furnace smoke hood feed port, and are respectively connected to the side walls on both sides of the anode furnace smoke hood feed port through multiple second reinforcing ribs.

[0017] Furthermore, the gap between the top of the door body and the bottom of the cooling water jacket is 5-8 mm, the gap between the two door panels is 5-8 mm, and the gap between the two door panels and the feed chute is 10-20 mm.

[0018] Beneficial effects of the utility model:

[0019] (1) The utility model innovatively changes the door columns on both sides of the furnace smoke hood feed door into hollow cooling water columns, and sets a cooling water jacket on the upper crossbeam. At the same time, in conjunction with the cooling water system, cooling water can be continuously introduced into the cooling water columns and the cooling water jacket during use to reduce the temperature of the door panel and the refractory materials on the surrounding side walls, which can effectively prevent the door panel and the surrounding refractory materials from overheating and deformation, thereby extending the service life of the smoke hood.

[0020] (2) The present invention improves the structure of the upper crossbeam, which includes a fixed support beam and two cooling water jackets. The cross section of the fixed support beam is an inverted "T" shape. When installed on the anode furnace smoke hood, the vertical end of the fixed support beam is embedded in the side wall provided at the top of the anode furnace smoke hood feed port, and the horizontal end supports the refractory material layer on both sides of the vertical end. The horizontal end of the upper crossbeam can play a shaping role on the refractory material located above it, and can prevent the refractory material above from partially falling off due to deformation, high-temperature erosion and corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural front view of the furnace smoke hood feed door disclosed in the utility model;

[0022] Figure 2 This is a structural side view of the furnace smoke hood feed door disclosed in the utility model;

[0023] Figure 3 This is a detailed view of the door body in the structure of the furnace smoke hood feed door disclosed in the present utility model;

[0024] Figure 4 This is an enlarged cross-sectional view of an upper crossbeam in the structure of a furnace smoke hood feed door disclosed in the present utility model;

[0025] Among them, 1—anode furnace smoke hood, 2—feed chute, 3—anode furnace feed port, 4—water-cooling column, 5—upper end plate of water-cooling column, 6—lower end plate of water-cooling column, 7—refractory material layer, 8—door body steel plate, 9—door body equilateral angle steel, 10—hinge, 11—fixed support beam, 12—first reinforcing rib plate, 13—cooling water jacket, 14—bolt, 15—water supply main, 16—water supply branch, 17—first regulating valve, 18—return water branch, 19—second regulating valve, 20—return water main, 21—first water inlet, 22—first water outlet, 23—second water inlet, 24—second water outlet, 25—door body, 26—water channel, 27—cooling water system, 28—upper crossbeam, 29—anchor nail, 30—second reinforcing rib plate. DETAILED DESCRIPTION

[0026] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments shown below do not limit the scope of the invention as claimed in the claims. Furthermore, the entire contents of the embodiments shown below are not necessarily required to serve as the solution of the invention as claimed in the claims.

[0027] A furnace smoke hood feed door, comprising two water-cooling columns 4, an upper crossbeam 28, a door body 25, and a cooling water system 27, wherein the two water-cooling columns 4 are arranged parallel to each other in the vertical direction; the water-cooling columns 4 are hollow columnar structures, the lower ends of the water-cooling columns 4 are provided with a first water inlet 21, and the upper ends of the water-cooling columns 4 are provided with a first water outlet 22; the upper crossbeam 28 is horizontally arranged above the two water-cooling columns 4, and the upper crossbeam 28 and the two water-cooling columns 4 together form a feed door frame; the upper crossbeam 28 comprises a fixed support beam 11 and two cooling water jackets 13, the cross section of the fixed support beam 11 is an inverted "T" shape, the two cooling water jackets 13 are connected into an "I" shape and are arranged below the fixed support beam 11 and are connected to the bottom of the fixed support beam 11; a water channel 26 is provided inside the cooling water jacket 13, and a water channel 26 is provided outside the cooling water jacket The second water inlet 23 and the second water outlet 24 of the two cooling water jackets 13 are connected respectively to the first water outlet 22 of the two water-cooling columns 4; the door body 25 is arranged in the feed door frame; the door body 25 includes two door panels arranged opposite to each other, and the two door panels are rotatably connected to the two water-cooling columns 4 by hinges 10; the two door panels are provided with feed notches at adjacent bottoms, and the feed notches of the two door panels together constitute the feed inlet; the cooling water system 27 includes a water supply main 15, a return water main 20, two water supply branch pipes 16, and two return water branch pipes 18, the water supply main 15 is connected to the first water inlet 21 of the two water-cooling columns 4 respectively through the two water supply branch pipes 16; the return water main 20 is connected to the second water outlet 24 of the two cooling water jackets 13 respectively through the two return water branch pipes 18.

[0028] In one embodiment of the present invention, the door panel includes a panel surface, chamfered reinforcement plates arranged on the edges around the front of the panel surface, multiple anchor nails 29, and a refractory material layer 7, and the refractory material layer 7 is arranged on the back of the panel surface; one end of the anchor nail 29 is connected to the back of the panel surface, and the other end extends into the refractory material layer 7, which is used to fix the refractory material layer 7.

[0029] In one embodiment of the present invention, the fixed support beam 11 includes a horizontal beam and a vertical beam, the bottom of the vertical beam is vertically connected to the middle of the horizontal beam, and the two together constitute a fixed support beam 11 with an inverted "T"-shaped cross-section; a plurality of first reinforcing ribs 12 are also provided on both sides of the vertical beam, and the first reinforcing ribs 12 are respectively vertically connected to the vertical beam and the horizontal beam.

[0030] In one embodiment of the present invention, the cross-section of the cooling water jacket 13 is rectangular, the width of the cooling water jacket 13 is not less than the width of the horizontal beam that fixes the support beam 11, and the upper surface of the cooling water jacket 13 is fitted under the horizontal beam and fixedly connected to the horizontal beam by multiple sets of bolts 14 and nuts.

[0031] In one embodiment of the present invention, the two water supply branches 16 are respectively provided with a first regulating valve 17 ; the two water return branches 18 are respectively provided with a second regulating valve 19 .

[0032] In one embodiment of the present invention, the first regulating valve 17 is a manual ball valve, and the second regulating valve 19 is a manual gate valve; the two return water branches 18 are also provided with temperature detection devices respectively.

[0033] In one embodiment of the present invention, the water-cooling column 4, the door body 25, and the fixed support beam 11 are all made of steel, and the cooling water jacket 13 is a copper cooling water jacket.

[0034] An anode furnace with the furnace smoke hood feed door, wherein the furnace smoke hood feed door is embedded and installed in the feed opening of the anode furnace smoke hood 1, and the feed chute 2 is arranged through the feed opening between two door panels.

[0035] In one embodiment of the present invention, the vertical end of the fixed support beam 11 with an inverted "T"-shaped cross-section is embedded in the side wall at the top of the anode furnace smoke hood 1 feed port, and the horizontal end supports the refractory material layer 7 on both sides of the vertical end; the two water-cooling columns 4 are embedded and installed on the side walls on both sides of the anode furnace smoke hood 1 feed port, and are respectively connected to the side walls on both sides of the anode furnace smoke hood 1 feed port through multiple second reinforcing ribs 30.

[0036] In one embodiment of the present invention, the gap between the top of the door body 25 and the bottom of the cooling water jacket 13 is 5-8 mm, the gap between the two door panels is 5-8 mm, and the gap between the two door panels and the feed chute 2 is 10-20 mm.

[0037] In one embodiment of the present invention, the water-cooling column 4 is made of four rectangular steel plates, and the upper and lower ends are blocked by the upper end plate 5 and the lower end plate 6 of the water-cooling column. A first water inlet 21 is provided at the lower end of the water-cooling column 4, and a first water outlet 22 is provided at the upper end; the door body 25 is an inverted L-shaped steel plate 8, and an equilateral angle steel 9 is installed on the outer circumferential edge of the inverted L-shaped steel plate 8 for reinforcement. After V-shaped anchor nails 29 are welded on the inner side of the inverted L-shaped steel plate 8, refractory material is poured to form a refractory material layer 7; the upper crossbeam 28 is a fixed support beam 11 composed of two equilateral angle steel frames installed inside and outside the smoke hood 1, and mounting holes are pre-reserved on the fixed support beam 11 , fix the two cooling water jackets 13 to the installed fixed support beam 11 with bolts 14 and matching nuts; a second water inlet 23 and a second water outlet 24 are opened on the surface of the cooling water jacket 13, and a water channel 26 is set in the cooling water jacket 13; the cooling water system 27 includes a water supply main 15, a return water main 20, a water supply branch pipe 16, and a return water branch pipe 18, wherein the water supply main 15 is connected to the first water inlet 21 through the water supply branch pipe 16, the first water outlet 22 is connected to the second water inlet 23, the return water main 20 is connected to the second water outlet 24 through the return water branch pipe 18, and the water supply main 15 is connected to a water supply device.

[0038] In one embodiment of the present utility model, the water-cooling column 4 is arranged in parallel and symmetrically on the left and right. According to the design drawings, a hole is opened on the center line of the anode furnace charging port 3 of the smoke hood 1. The size of the hole is the same width as the outer side of the water-cooling column 4, and the height is flush with the upper plane of the cooling water jacket 13. The water-cooling column 4 is installed on the left and right sides of the hole, flush with the steel shell of the smoke hood 1, and a second reinforcing rib plate 30 is welded between the water-cooling column 4 and the steel shell of the smoke hood 1. The door body 25 is installed on the water-cooling column 4 through a hinge 10. Each door is installed with two hinges 10, which can enable the door body 25 to open outward at an angle greater than 90° when closed. The gap between the door body 25 and the upper crossbeam 28 is 5-8mm, the gap between the two doors is 5-8mm, and the gap between the door body 25 and the feed chute 2 is 10-20mm.

[0039] In one embodiment of the present invention, the cooling water jacket 13 of the upper crossbeam 28 is symmetrically installed in two pieces, each cooling water jacket 13 is provided with no less than 4 mounting holes, and the mounting holes are arranged in double rows. The cooling water jacket 13 is installed on the fixed support beam 11, and at least 5 reinforcing ribs are provided on the fixed support beam 11. The vertical section of the fixed support beam 11 is embedded in the side wall of the smoke hood body 1 along the top of the feed port, and the horizontal end supports the refractory material layer in the side walls on both sides of the vertical end.

[0040] In one embodiment of the present utility model, in one embodiment, the cooling water system 17 is supplied with water by a water supply device connected to the water supply main line 15, a first water inlet 21 is provided at the lower end of the water-cooling column 4, and a first water outlet 22 is provided at the upper end, the cooling water enters the water-cooling column 4 through the water supply branch line 16 and the water inlet 21 in succession, and is then discharged from the first water outlet 22 into the second water inlet 23 of the cooling water jacket 13 to enter the cooling water jacket 13, and is then discharged from the second water outlet 24 into the return water branch line 18 and returned to the return water main line 20, a manual ball valve is provided on the water supply branch line 16 to control the water inlet flow, and a manual gate valve is provided on the return water branch line 18 to control the water outlet flow, and at the same time, a thermometer is provided on the return water branch line to monitor the water outlet temperature, so that the water outlet flow is controlled by the manual gate valve, so that the cooling water temperature in the water-cooling column 4 and the cooling water jacket 13 is controlled within a certain range to adjust the cooling effect.

[0041] In one embodiment of the present invention, the water-cooling column 4 is a rectangular or square structure, composed of four rectangular steel plates, with a height of not less than 1800 mm and a thickness of 14-16 mm. Preferably, the steel plates are made of Q245R material, and the cross-sectional dimensions of the water-cooling column are 160 mm * 160 mm.

[0042] In one embodiment of the present invention, the upper flat end of the water-cooling column 4 is sealed with a 14-16mm thick steel plate, and the lower end is sealed with a 14-16mm thick steel plate based on the designed arc angle of the smoke hood body. Preferably, the steel plate is made of Q245R. The water-cooling column 4 is provided with a first water inlet 21 at the lower left end and a first water outlet 22 at the upper end. The inlet and outlet diameters are DN25mm.

[0043] In one embodiment of the present invention, the door body 25 is made of a steel plate with a thickness of 10-14 mm, and the material is specifically Q245R. The outer side of the door body 25 reinforced equilateral angle steel 9 is 120*120mm-160*160mm, and the material is Q235B. The V-shaped anchor nails 29 welded on the inside of the door body 25 are 80mm high, the spacing between the anchor nails 29 is ≤60mm and staggered welding, the anchor nail diameter is 6-8mm, and the material is stainless steel 304. After the anchor nails 29 are welded on the inside of the door body 25, the refractory material is cast as a whole. The refractory material is mullite castable, and the casting thickness is not less than 100mm. The door body 25 is installed on the water-cooled column 4 through hinges 10. Each door is provided with 2 hinges. The diameter of the hinge 10 is not less than 30mm, and the total length of the hinge 10 is not less than 120mm. The material is medium carbon steel with a carbon content of 0.45.

[0044] In one embodiment of the present invention, the copper water jacket of the upper crossbeam 28 has dimensions of 1100mm in length, 300mm in width, and 75mm in thickness. Two copper water jackets are symmetrically installed, with water inlets and outlets at the outer ends, a diameter of DN25, and made of T1 copper. Each copper water jacket has at least four mounting holes, with mounting bolts having a diameter of at least M16, and the mounting holes are arranged in double rows. The steel frame for fixing the copper water jacket is an equilateral angle steel with a specification of 120mm-160mm, and is provided with at least five reinforcing ribs. A steel frame is provided inside and outside the smoke hood body, and is horizontally symmetrical. A water-cooling column and a copper water jacket are connected in series to form a water-cooling element. This cooling system consists of two water-cooling elements.

[0045] The utility model innovatively changes the doorposts on both sides of the furnace smoke hood feed door into hollow cooling water columns, and arranges a cooling water jacket 13 on the upper crossbeam 28. At the same time, in conjunction with the cooling water system 27, cooling water can be continuously introduced into the cooling water columns and the cooling water jacket 13 during use to reduce the temperature of the door panel and the refractory materials on the surrounding side walls, which can effectively prevent the door panel and the surrounding refractory materials from overheating and deformation, thereby extending the service life of the smoke hood. The present invention improves the structure of the upper crossbeam 28. The upper crossbeam 28 includes a fixed support beam 11 and two cooling water jackets 13. The cross section of the fixed support beam 11 is an inverted "T" shape. When installed on the anode furnace smoke hood 1, the vertical end of the fixed support beam 11 is embedded in the side wall arranged at the top of the feed port of the anode furnace smoke hood 1, and the horizontal end supports the refractory material layer 7 on both sides of the vertical end. The horizontal end of the upper crossbeam 28 can play a shaping role on the refractory material located above it, and can prevent the local falling off of the refractory material above due to deformation, high-temperature erosion and corrosion.

[0046] In the description of this application, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] Unless otherwise specified or limited, the terms "disposed" and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0048] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A furnace smoke hood feed door, characterized in that: It includes two water-cooled columns, upper beam, door body, and cooling water system. The two water-cooling columns are arranged parallel to each other in the vertical direction; the water-cooling columns are hollow columnar structures, the lower end of the water-cooling columns is provided with a first water inlet, and the upper end of the water-cooling columns is provided with a first water outlet; The upper crossbeam is horizontally arranged above the two water-cooling columns, and the upper crossbeam and the two water-cooling columns together form a feed door frame; the upper crossbeam includes a fixed support beam and two cooling water jackets, the cross section of the fixed support beam is an inverted "T" shape, and the two cooling water jackets are connected to form an "I" shape and are arranged below the fixed support beam and connected to the bottom of the fixed support beam; a water channel is arranged inside the cooling water jacket, and a second water inlet and a second water outlet connected to the water channel are arranged outside the cooling water jacket, and the second water inlets of the two cooling water jackets are respectively connected to the first water outlets of the two water-cooling columns; The door body is arranged in the feeding door frame; the door body includes two door panels arranged opposite to each other, and the two door panels are respectively connected to the two water-cooling columns by hinges; the bottom of the two door panels are adjacent to each other and the feeding notches of the two door panels together constitute the feeding port; The cooling water system includes a water supply main, a return water main, two water supply branches, and two return water branches. The water supply main is connected to the first water inlets of the two water-cooling columns through the two water supply branches; the return water main is connected to the second water outlets of the two cooling water jackets through the two return water branches.

2. The furnace smoke hood feed door according to claim 1, characterized in that: The door panel includes a panel surface, chamfered reinforcement plates arranged on the edges around the front of the panel surface, multiple anchor nails, and a refractory material layer, and the refractory material layer is arranged on the back of the panel surface; one end of the anchor nail is connected to the back of the panel surface, and the other end extends into the refractory material layer, which is used to fix the refractory material layer.

3. The furnace smoke hood feeding door according to claim 1, characterized in that: The fixed support beam includes a horizontal beam and a vertical beam. The bottom of the vertical beam is vertically connected to the middle of the horizontal beam, and the two together form a fixed support beam with an inverted "T"-shaped cross-section; multiple first reinforcing ribs are also provided on both sides of the vertical beam, and the first reinforcing ribs are respectively vertically connected to the vertical beam and the horizontal beam.

4. The furnace smoke hood feeding door according to claim 3, characterized in that: The cross section of the cooling water jacket is rectangular, and the width of the cooling water jacket is not less than the width of the horizontal beam that fixes the support beam. The upper surface of the cooling water jacket is fitted under the horizontal beam and is fixedly connected to the horizontal beam by multiple sets of bolts and nuts.

5. The furnace smoke hood feeding door according to claim 1, characterized in that: The two water supply branch pipes are respectively provided with a first regulating valve; the two water return branch pipes are respectively provided with a second regulating valve.

6. The furnace smoke hood feeding door according to claim 5, characterized in that: The first regulating valve is a manual ball valve, and the second regulating valve is a manual gate valve; the two return water branches are also respectively provided with temperature detection devices.

7. The furnace smoke hood feed door according to any one of claims 1 to 6, characterized in that: The water-cooling column, door body, and fixed support beam are all made of steel, and the cooling water jacket is a copper cooling water jacket.

8. An anode furnace with a furnace smoke hood feeding door according to any one of claims 1 to 7, characterized in that: The furnace smoke hood feeding door is embedded in the anode furnace smoke hood feeding port, and the feeding chute is arranged through the feeding port between the two door panels.

9. The anode furnace with a furnace smoke hood feeding door according to claim 8, characterized in that: The vertical end of the fixed support beam with an inverted "T"-shaped cross-section is embedded in the side wall at the top of the anode furnace smoke hood feed port, and the horizontal end supports the refractory material layer on both sides of the vertical end; the two water-cooling columns are embedded and installed on the side walls on both sides of the anode furnace smoke hood feed port, and are respectively connected to the side walls on both sides of the anode furnace smoke hood feed port through multiple second reinforcing ribs.

10. The anode furnace with a furnace smoke hood feeding door according to any one of claims 8 or 9, characterized in that: The gap between the top of the door body and the bottom of the cooling water jacket is 5-8 mm, the gap between the two door panels is 5-8 mm, and the gap between the two door panels and the feed chute is 10-20 mm.

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