Energy-saving furnace top prefabricated part
The angled precast components and multi-layered supports in the furnace top design address deformation and sealing issues, enhancing energy efficiency and reducing maintenance costs in industrial furnaces.
Patent Information
- Application Number
- CN202422112372.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-29
AI Technical Summary
Traditional furnace roof structures are prone to deformation and damage under high temperature conditions, resulting in energy loss, affecting heating efficiency and product quality, and insufficient sealing leads to heat leakage, increasing maintenance costs.
The prefabricated parts of the inclined support structure are designed, combining the limit structure of the fire opening and burner, adjustable sealing plate and communication socket, and a multi-layer inner tank limit sleeve and hand-cutting groove design to ensure stable support, sealing and convenient maintenance.
It improves the overall energy efficiency of the furnace roof, reduces energy loss, enhances combustion efficiency and sealing, reduces maintenance costs, and adapts to the replacement needs of burners of different specifications.
Smart Images
Figure CN223106680U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of industrial furnaces, and particularly to an energy-saving furnace top precast part. Background Art
[0002] In the fields of industrial heating and heat treatment, the efficiency and reliability of the furnace top structure directly affect energy consumption and production costs. In traditional furnace top designs, especially those using masonry structures, deformation and damage are likely to occur under high-temperature conditions, resulting in energy loss, affecting heating efficiency and product quality. In addition, there are also deficiencies in the sealing performance of traditional furnace tops and the fixing methods of burners. For example, poor sealing leads to heat leakage, and unstable fixing of burners poses a risk of falling off, which further exacerbates energy waste and increases maintenance costs.
[0003] In response to the above problems, there have been some solutions in the prior art to improve the furnace top structure and combustion system. Through its unique inclined plane support structure, limit structure of the fire port and the burner, design of adjustable sealing plate and connecting jacks, cooperation mechanism of limit slots and positioning blocks, convenient maintenance design of the handle groove, and the use of high-temperature sealing materials and other innovative technical points, it aims to provide a furnace top structure with stable structure, high sealing efficiency and simple maintenance to meet the requirements of energy conservation, high efficiency and economy in the fields of industrial heating and heat treatment. Summary of the Utility Model
[0004] The main object of the utility model is to propose an energy-saving furnace top precast part, aiming to solve the problems that the traditional industrial furnace top is prone to deformation and damage, resulting in energy loss, affecting heating efficiency and product quality as mentioned in the above background art.
[0005] To solve the above problems, the utility model proposes an energy-saving furnace top precast part, including precast parts. There are multiple precast parts, and the outer walls of the left and right ends of the precast parts are inclined and arranged in the front and back. A plurality of refractory bricks are arranged on the left and right sides of the lower ends of the plurality of precast parts. Sealing bricks are arranged at the front and back ends of the plurality of precast parts. A fire channel is arranged between the plurality of refractory bricks on the left and the plurality of refractory bricks on the right, and the fire channel runs through the inside of the lower ends of the two sealing bricks in the front and back. A protective plate is arranged on the upper ends of the plurality of precast parts. Fire ports run through the inside of the centers of the upper ends of the plurality of precast parts up and down, and a part of the plurality of fire ports is in a closed state. Sealing plate grooves run through the inside of the upper ends of the plurality of protective plates up and down. Reducing diameter covers are clamped inside the lower ends of the plurality of fire ports. Fire channel bottom covers and fire channel upper covers are clamped inside the plurality of fire ports in the closed state. The plurality of fire channel upper covers are respectively located above the plurality of fire channel bottom covers and are respectively clamped inside the plurality of sealing plate grooves, and the plurality of fire channel upper covers are all clamped on the upper ends of the reducing diameter covers.
[0006] In one embodiment, a burner is further included. The burner is clamped inside each of the plurality of fire ports that are not in a closed state through a reducing cover, and the plurality of burners respectively penetrate through the rear sides of the plurality of sealing plate grooves vertically.
[0007] In one embodiment, a sealing plate is clamped inside the sealing plate groove, and handles are arranged on the left and right sides of the upper ends of the sealing plate and the burner. A communication insertion hole penetrates vertically through the front side of the center of the upper end of the sealing plate. The radius of the circle where the communication insertion hole is located is equal to the radius of the circle where the upper opening of the fire port is located, and the communication insertion hole and the fire port share the same central axis. The burner penetrates vertically through the communication insertion hole.
[0008] In one embodiment, an outer lower inner tank is clamped inside the lower end of the fire port, and the outer lower inner tank is clamped inside the upper end of the reducing cover. An inner lower inner tank is clamped inside the outer lower inner tank. Both the outer lower inner tank and the inner lower inner tank are composed of a limiting ring at the upper end and an insertion tube at the lower end, and the radius of the outer circle where the limiting ring of the outer lower inner tank is located is greater than the radius of the outer circle where the limiting ring of the inner lower inner tank is located.
[0009] In one embodiment, an outer upper inner tank is clamped inside the upper end of the fire port, and the lower end of the outer upper inner tank fits with the upper end of the outer lower inner tank and is clamped between the upper inner wall of the fire port and the outer wall of the limiting ring of the inner lower inner tank.
[0010] In one embodiment, an inner upper inner tank is clamped inside the outer upper inner tank, and the lower end of the inner upper inner tank fits with the upper end of the inner lower inner tank. The inner walls of both the inner lower inner tank and the inner upper inner tank are closely attached to the outer wall of the burner.
[0011] In one embodiment, limiting card slots are opened inside the upper sides of the front and rear outer walls of the outer upper inner tank and the inner upper inner tank. Inside walls of the four limiting card slots near one end of the burner are all provided with finger grooves.
[0012] In one embodiment, limiting blocks are fixedly connected to the upper sides of the front and rear inner walls of the outer upper inner tank, and the two limiting blocks are respectively clamped inside the two limiting card slots inside the upper sides of the front and rear outer walls of the inner upper inner tank.
[0013] In one embodiment, two positioning blocks are fixedly connected to the front and rear sides of the center of the lower end of the sealing plate. The two positioning blocks on the front side are respectively located on the front and rear sides of the center of the lower end of the communication insertion hole and are clamped inside the two limiting card slots inside the upper sides of the front and rear ends of the outer upper inner tank.
[0014] In one embodiment, the two positioning blocks on the front side and the two positioning blocks on the rear side are arranged symmetrically in the front and rear. Two positioning card slots are opened inside the rear side of the upper end of the prefabricated part, and the two positioning blocks on the rear side are respectively clamped inside the two positioning card slots.
[0015] Beneficial effects:
[0016] 1. Inclined plane support structure: By designing prefabricated parts in the shape of an inclined plane, even under uneven support caused by high-temperature deformation of refractory bricks, mutual support can be formed between the prefabricated parts to prevent the overall collapse of the furnace top, maintain the flatness of the furnace top surface, and seal with high-temperature mortar or high-temperature cotton blocks between the prefabricated parts and refractory bricks, effectively preventing the leakage of high-temperature flue gas in the flue, reducing energy loss, and improving the overall energy efficiency of the system.
[0017] 2. Limit structure for the flue opening and burner: The design of clamping a reduced-diameter cover inside the lower end of the flue opening ensures the stable limitation of the burner and prevents it from falling into the flue. At the same time, through the multi-layer limit sleeve structure of the outer lower inner tank, inner lower inner tank, outer upper inner tank, and inner upper inner tank, the compatible fixation of burners with different specifications is realized, improving the combustion efficiency and energy utilization.
[0018] 3. Adjustable sealing plate and connecting jack: The sealing plate is designed with a connecting jack, which accurately docks with the flue opening to achieve efficient sealing of the flue opening. The sealing plate can be used in cooperation with the bottom cover and upper cover of the flue by turning it around, and the bottom cover and upper cover of the flue can also be used alone, further enhancing the sealing performance, reducing heat leakage, and improving the energy-saving effect.
[0019] 4. Matching mechanism of limit slot and positioning block: The design of the limit slot and positioning block ensures the accurate installation and stable operation of each component (such as the outer upper inner tank, inner upper inner tank, and sealing plate), reducing energy loss and maintenance costs caused by component misalignment.
[0020] 5. Convenient maintenance design of the handle groove: The setting of the handle groove facilitates the disassembly and assembly of the outer upper inner tank, simplifies the replacement process of the limit sleeve, and improves the system maintenance efficiency and user experience. Description of the drawings
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0022] Figure 1 is a three-dimensional structural schematic diagram of the energy-saving furnace of the present invention;
[0023] Figure 2 is a three-dimensional structural schematic diagram of the top cover of the present invention;
[0024] Figure 3It is a left - view sectional structure schematic diagram of the top cover of the present utility model;
[0025] Figure 4 It is a three - dimensional sectional structure schematic diagram of the top cover of the present utility model;
[0026] Figure 5 It is a schematic diagram of the connection structure of the inner upper inner tank of the present utility model;
[0027] Figure 6 It is a left - view structure schematic diagram of the energy - saving furnace of the present utility model;
[0028] Figure 7 It is a left - view structure schematic diagram of the original energy - saving furnace.
[0029] The description of the reference numerals is as follows:
[0030] 1. Prefabricated part; 2. Refractory brick; 3. Sealing brick; 4. Flue; 5. Protection plate; 6. Flue opening; 7. Sealing plate groove; 8. Burner; 9. Sealing card board; 10. Connecting jack; 11. Outer lower inner tank; 12. Inner lower inner tank; 13. Outer upper inner tank; 14. Inner upper inner tank; 15. Limit card slot; 16. Finger - groove; 17. Limit card block; 18. Positioning card block; 19. Positioning card slot; 20. Reducing cover; 21. Bottom cover of the flue; 22. Upper cover of the flue; 23. Sealing base; 24. Flue cover. Detailed implementation manners
[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying 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 of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model.
[0032] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.
[0033] In the present utility model, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0035] Embodiment 1
[0036] The present utility model provides an energy-saving furnace top precast member as Figures 1-7 shown, including precast member 1. There are multiple precast members 1, and the outer walls of the left and right ends of the precast member 1 are arranged in an inclined plane and are arranged front and back. A plurality of refractory bricks 2 are provided on the left and right sides of the lower ends of the multiple precast members 1. Sealing bricks 3 are provided at the front and back ends of the multiple precast members 1. A flue 4 is provided between the multiple refractory bricks 2 on the left side and the multiple refractory bricks 2 on the right side, and the flue 4 runs through the inside of the lower ends of the two sealing bricks 3 front and back for guiding fire. A protective plate 5 is provided at the upper end of each of the multiple precast members 1. Fire ports 6 penetrate up and down through the centers of the upper ends of the multiple precast members 1, and a part of the multiple fire ports 6 is in a closed state. Sealing plate grooves 7 penetrate up and down through the upper ends of the multiple protective plates 5. Reducing covers 20 are clamped inside the lower ends of the multiple fire ports 6. Fire flue bottom covers 21 and fire flue upper covers 22 are clamped inside the multiple fire ports 6 in a closed state. The multiple fire flue upper covers 22 are respectively located above the multiple fire flue bottom covers 21 and are respectively clamped inside the multiple sealing plate grooves 7, and the multiple fire flue upper covers 22 are all clamped on the upper ends of the reducing covers 20.
[0037] Preferably, as shown in the fire port 6 and the sealing plate groove 7, the fire port 6 in a closed state can be blocked by the fire channel bottom cover 21 and the fire channel upper cover 22, and the fire channel bottom cover 21 and the fire channel upper cover 22 can be fixed inside the fire port 6 through the reducing cover 20 clamped inside the lower end of the fire port 6. The fire port 6 in a closed state can be blocked by the fire channel bottom cover 21 and the fire channel upper cover 22. Compared with the original fire port 6 in a closed state, it was blocked by the blocking base 23 and the fire channel cover 24. The installation positions of the blocking base 23 and the fire channel cover 24 were above the fire port 6. The heat preservation thickness between the high-temperature flue gas inside the fire channel 4 and the external air was small, the heat transfer speed was fast, the surface temperature in contact with the air was high, the heat loss was large, and the energy consumption was high. After improvement, the inside of the fire port 6 is blocked by the fire channel bottom cover 21 and the fire channel upper cover 22. This blocking method makes the blocking thickness basically the same as the thickness of the furnace roof slab. The heat preservation thickness between the high-temperature flue gas inside the fire channel 4 and the external air is large, the heat transfer speed is slow, the surface temperature in contact with the air is low, the heat loss is small, and the energy consumption is low.
[0038] Preferably, as shown in the fire port 6 and the sealing plate groove 7, compared with the original prefabricated part 1, the adjacent planes are vertically butt-jointed. When the upper surfaces of multiple refractory bricks 2 are uneven due to the expansion / contraction deformation of the fire channel 4, multiple prefabricated parts 1 also stagger and collapse up and down with the unevenness of the upper surfaces of multiple refractory bricks 2. The high-temperature flue gas in the fire channel 4 overflows from the gaps between multiple prefabricated parts 1 and between the lower surface and the upper surface of multiple refractory bricks 2, resulting in energy leakage and increased energy consumption. After improvement, the adjacent planes of the prefabricated part 1 are inclined planes with an inclination angle between 70° and 110° for butt-joint combination. Even when the upper surfaces of multiple refractory bricks 2 are uneven due to the expansion / contraction deformation of the fire channel 4, multiple prefabricated parts 1 can support each other through the inclined planes to ensure that the upper and lower planes of multiple prefabricated parts 1 remain on the same horizontal plane. The seal between multiple prefabricated parts 1 is good and there will be no leakage of the high-temperature flue gas inside the fire channel 4. The gaps generated between the lower surface of multiple prefabricated parts 1 and the upper surface of multiple refractory bricks 2 are sealed by stuffing high-temperature refractory mortar or high-temperature cotton blocks, which can also prevent the leakage of the high-temperature flue gas in the fire channel and prevent fire leakage, thereby reducing energy loss and production costs.
[0039] Example Two
[0040] As Figures 1-5An energy-saving roof prefabricated part shown also includes a burner 8. The burner 8 is clamped inside each of the multiple non-closed fire ports 6 through a reducing cover 20. And the multiple burners 8 respectively penetrate through the rear sides inside the multiple sealing plate grooves 7 vertically. The upper end of the energy-saving roof is protected by multiple protection plates 5. Flame is introduced through the fire holes vertically penetrating through the centers of the multiple burners 8. And the multiple burners 8 are inserted into the multiple prefabricated parts 1 through the multiple fire ports 6 and penetrate through the multiple protection plates 5 through the multiple sealing plate grooves 7, and can be inserted and taken out more conveniently through a handle. Since the fire port 6 is arranged in an inverted "convex" shape, the burner 8 can be stably limited inside the fire port 6 and will not fall into the fire channel 4 inside.
[0041] Preferably, a sealing plate clamp 9 is clamped inside the sealing plate groove 7. Handles are arranged on the left and right sides of the upper ends of both the sealing plate clamp 9 and the burner 8. A communication jack 10 vertically penetrates through the front side inside the center of the upper end of the sealing plate clamp 9. The radius of the circle where the communication jack 10 is located is equal to the radius of the circle where the upper opening of the fire port 6 is located and is coaxial with the fire port 6, so that the burner 8 can be inserted into the fire port 6 through the communication jack 10. And the closed fire port 6 can be blocked by placing a fire channel bottom cover 20 and a fire channel upper cover 21 inside it and reversing the front and rear clamping directions of the sealing plate clamp 9. And both the fire channel bottom cover 20 and the fire channel upper cover 21 are located at the lower end of the sealing plate clamp 9. The sealing plate clamp 9 is taken out of the sealing plate groove 7 through the handles arranged on the left and right sides of the upper end for front and rear reversal and then clamped into the sealing plate groove 7 again. When the clamping direction of the sealing plate clamp 9 in the sealing plate groove 7 is reversed, the communication jack 10 is located at the rear side inside the sealing plate groove 7, so that the communication jack 10 can be misaligned and clamped with the fire port 6, and the side of the sealing plate clamp 9 away from the communication jack 10 blocks the upper end of the fire port 6. This can not only protect the fire channel bottom cover and the fire channel upper cover from external damage, but also further seal the fire port 6 to prevent heat loss inside the fire channel 4 and make the energy-saving furnace more energy-efficient.
[0042] Preferably, an outer lower inner liner 11 is clamped inside the lower end of the fire duct opening 6, and the outer lower inner liner 11 is clamped inside the upper end of the reducer cover 20. An inner lower inner liner 12 is clamped inside the outer lower inner liner 11. Both the outer lower inner liner 11 and the inner lower inner liner 12 are composed of a limiting ring at the upper end and an inserting tube at the lower end. And the radius of the outer circle where the limiting ring of the outer lower inner liner 11 is located is greater than the radius of the outer circle where the limiting ring of the inner lower inner liner 12 is located. An outer upper inner liner 13 is clamped inside the upper end of the fire duct opening 6, and the lower end of the outer upper inner liner 13 is attached to the upper end of the outer lower inner liner 11 and is clamped between the inner wall on the upper side of the fire duct opening 6 and the outer wall of the limiting ring of the inner lower inner liner 12. An inner upper inner liner 14 is clamped inside the outer upper inner liner 13, and the lower end of the inner upper inner liner 14 is attached to the upper end of the inner lower inner liner 12. The inner walls of the inner lower inner liner 12 and the inner upper inner liner 14 are both closely attached to the outer wall of the burner nozzle 8. Among them, the outer lower inner liner 11 and the outer upper inner liner 13, as well as the inner lower inner liner 12 and the inner upper inner liner 14, can respectively form a set of limiting sleeves for fixing the burner nozzle 8, so that the energy-saving furnace top can limit burner nozzles 8 of different specifications, and the burner nozzle 8 can be replaced with different specifications according to the needs of the energy-saving furnace, enabling the energy-saving furnace to better adapt to different heating requirements. And the position of the outer lower inner liner 11 can be restricted through the fire duct opening 6. The outer lower inner liner 11 can restrict the position of the inner lower inner liner 12. The outer lower inner liner 11 and the inner lower inner liner 12 further restrict the position of the outer upper inner liner 13. The inner lower inner liner 12 and the outer upper inner liner 13 further restrict the position of the inner upper inner liner 14, so that the outer lower inner liner 11, the inner lower inner liner 12, the outer upper inner liner 13, and the inner upper inner liner 14 can all be coaxial with the fire duct opening 6, ensuring that the burner nozzle 8 can be smoothly inserted into the fire duct opening 6 and can be tightly connected inside the fire duct opening 6.
[0043] Preferably, limiting card slots 15 are opened inside the upper sides of the outer walls at the front and rear ends of the outer upper inner liner 13 and the inner upper inner liner 14. Limiting card blocks 17 are fixedly connected to the upper sides of the inner walls at the front and rear ends of the outer upper inner liner 13. And the two limiting card blocks 17 are respectively clamped inside the two limiting card slots 15 inside the upper sides of the outer walls at the front and rear ends of the inner upper inner liner 14. When the outer upper inner liner 13 limits the inner upper inner liner 14, the outer upper inner liner 13 can position and press down the inner upper inner liner 14 through the two limiting card blocks 17 on the upper sides of the inner walls at the front and rear ends and the two limiting card slots 15 inside the upper sides at the front and rear ends of the inner upper inner liner 14, preventing the inner upper inner liner 14 from moving upward from inside the outer upper inner liner 13 and ensuring that the inner upper inner liner 14 will not slide upward from inside the outer upper inner liner 13 under the action of external force.
[0044] Preferably, two positioning blocks 18 are fixedly connected to both the front and rear sides of the center of the lower end of the sealing card board 9. The two positioning blocks 18 on the front side are respectively located on the front and rear sides of the center of the lower end of the communication jack 10, and are clamped in the two limit slots 15 on the upper sides of the front and rear ends of the outer upper inner liner 13. The sealing card board 9 can position and press down the outer upper inner liner 13 through the two positioning blocks 18 on the front side and the two limit slots 15 on the upper sides of the front and rear ends of the outer upper inner liner 13, preventing the outer upper inner liner 13 from sliding out of the fire port 6 under the action of external force and making the fixation of the inner upper inner liner 14 more stable.
[0045] Preferably, a finger groove 16 is formed in the inner wall of each of the four limit slots 15 near one end of the burner 8. Since the outer upper inner liner 13 restricts the position of the inner upper inner liner 14, it is necessary to first remove the outer upper inner liner 13 before the inner upper inner liner 14 can be removed. In this way, the outer upper inner liner 13 can be taken out by inserting a finger into the finger groove 16, which is more convenient for the conversion between the two sets of limit sleeves.
[0046] Preferably, the two positioning blocks 18 on the front side and the two positioning blocks 18 on the rear side are symmetrically arranged in the front and rear directions. Two positioning slots 19 are formed in the inner part of the rear side of the upper end of the prefabricated part 1, and the two positioning blocks 18 on the rear side are respectively clamped in the two positioning slots 19. The sealing card board 9 can position the positions between the fire port 6 and the sealing plate groove 7 through the two positioning blocks 18 on the rear side and the two positioning slots 19, and can ensure that after the sealing card board 9 is turned around and the clamping direction is changed, the two positioning blocks 18 on the front side can be repositioned with the two positioning slots 19.
[0047] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.
Claims
1. An energy-saving furnace top prefabricated part, characterized in that It includes prefabricated parts (1), with multiple prefabricated parts (1) provided. The outer walls at the left and right ends of the prefabricated parts (1) are arranged in an inclined plane and are arranged front and back. A plurality of refractory bricks (2) are provided on both the left and right sides at the lower ends of the plurality of prefabricated parts (1). Sealing bricks (3) are provided at both the front and back ends of the plurality of prefabricated parts (1). A flue (4) is provided between the plurality of refractory bricks (2) on the left side and the plurality of refractory bricks (2) on the right side, and the flue (4) runs through the interior at the lower ends of the two sealing bricks (3) front and back. A protective plate (5) is provided at the upper end of each of the plurality of prefabricated parts (1). A flue opening (6) runs through the interior of the center of the upper end of each of the plurality of prefabricated parts (1) up and down, and a part of the plurality of flue openings (6) is in a closed state. A sealing plate groove (7) runs through the interior of the upper end of each of the plurality of protective plates (5) up and down. A reducing cover (20) is clamped inside the lower end of each of the plurality of flue openings (6). A flue bottom cover (21) and a flue upper cover (22) are clamped inside the plurality of flue openings (6) in a closed state. The plurality of flue upper covers (22) are respectively located above the plurality of flue bottom covers (21) and are respectively clamped inside the plurality of sealing plate grooves (7), and the plurality of flue upper covers (22) are all clamped on the upper end of the reducing cover (20).
2. The energy-saving furnace top prefabricated part according to claim 1, characterized in that It further includes a burner (8). The burner (8) is clamped through the reducing cover (20) inside each of the plurality of flue openings (6) not in a closed state, and the plurality of burners (8) respectively run through the interior of the rear sides of the plurality of sealing plate grooves (7) up and down.
3. The energy-saving roof prefabricated part as described in claim 2, wherein, A sealing card plate (9) is clamped inside the sealing plate groove (7), and handles are provided on the left and right sides at the upper ends of the sealing card plate (9) and the burner (8). A communication jack (10) runs through the interior of the front side at the center of the upper end of the sealing card plate (9) up and down. The radius of the circle where the communication jack (10) is located is equal to the radius of the circle where the upper opening of the flue opening (6) is located, and the communication jack (10) and the flue opening (6) share the same central axis. The burner (8) runs through the interior of the communication jack (10) up and down.
4. The energy-saving furnace top prefabricated part according to claim 3, characterized in that, An outer lower inner tank (11) is clamped inside the lower end of the flue opening (6), and the outer lower inner tank (11) is clamped inside the upper end of the reducing cover (20). An inner lower inner tank (12) is clamped inside the outer lower inner tank (11). Both the outer lower inner tank (11) and the inner lower inner tank (12) are composed of a limiting ring at the upper end and an inserting tube at the lower end, and the radius of the outer circle where the limiting ring of the outer lower inner tank (11) is located is greater than the radius of the outer circle where the limiting ring of the inner lower inner tank (12) is located.
5. The energy-saving roof prefabricated part according to claim 4, characterized in that, An outer upper inner tank (13) is clamped inside the upper end of the flue opening (6), and the lower end of the outer upper inner tank (13) fits against the upper end of the outer lower inner tank (11) and is clamped between the upper inner wall of the flue opening (6) and the outer wall of the limiting ring of the inner lower inner tank (12).
6. The energy-saving furnace top prefabricated part according to claim 5, characterized in that, An inner upper inner tank (14) is clamped inside the outer upper inner tank (13), and the lower end of the inner upper inner tank (14) fits against the upper end of the inner lower inner tank (12). The inner walls of both the inner lower inner tank (12) and the inner upper inner tank (14) are closely attached to the outer wall of the burner (8).
7. The energy-saving furnace top prefabricated part according to claim 6, characterized in that The outer upper inner liner (13) and the inner upper inner liner (14) are both provided with limiting card slots (15) inside the upper sides of the outer walls at the front and rear ends, and a finger groove (16) is provided inside the inner wall of each of the four limiting card slots (15) at one end close to the burner (8).
8. The energy-saving roof prefabricated part according to claim 7, characterized in that, Limiting blocks (17) are fixedly connected to the upper sides of the inner walls at the front and rear ends of the outer upper inner liner (13), and the two limiting blocks (17) are respectively clamped inside the two limiting card slots (15) inside the upper sides of the outer walls at the front and rear ends of the inner upper inner liner (14).
9. The energy-saving furnace top prefabricated part according to claim 3, characterized in that, Two positioning blocks (18) are fixedly connected to both the front and rear sides of the center of the lower end of the sealing card plate (9). The two positioning blocks (18) located at the front side are respectively located on the front and rear sides of the center of the lower end of the communication jack (10), and are clamped inside the two limiting card slots (15) inside the upper sides at the front and rear ends of the outer upper inner liner (13).
10. An energy-saving roof prefabricated part as described in claim 9, characterized in that, The two positioning blocks (18) located at the front side and the two positioning blocks (18) located at the rear side are symmetrically arranged front and rear. Two positioning card slots (19) are provided inside the rear side of the upper end of the prefabricated part (1), and the two positioning blocks (18) located at the rear side are respectively clamped inside the two positioning card slots (19).