Throat structure of kiln

Abstract

The utility model relates to glass substrate production and manufacturing, in particular to a throat structure of a kiln, which comprises a brick body, a throat is defined by the brick body, the brick body comprises a cover plate brick positioned above the throat, the cover plate brick is provided with a chamfer at the inflow side of the throat, and the fluid flushing wall of the cover plate brick is provided with a protective layer. The cover plate brick is chamfered, fluid can flow through the cover plate brick more smoothly without causing excessive abrasion of the cover plate brick, meanwhile, the protective layer is arranged on the fluid flushing wall, erosion of the fluid to the cover plate brick can be reduced, the service life of the throat is remarkably prolonged, fluid leakage is prevented, and the service life of the throat is prolonged. And the maintenance cost of the kiln can be greatly reduced.

Description

Technical Field

[0001] The present disclosure relates to the production and manufacturing of glass substrates, and particularly to a throat structure of a furnace. Background Art

[0002] In the production process of photovoltaic glass plates, as one of the important thermal equipment, the furnace plays a crucial role in ensuring product quality and production efficiency. As one of the core components of the glass tank furnace, the throat is located inside the furnace and is mainly used to control and guide the flow of molten glass, ensuring that the glass liquid can be evenly distributed and flow to the forming area. Its design and maintenance have a profound impact on the continuity and quality stability of the entire production process. The throat cover brick is easily scoured and eroded by the molten glass, especially the erosion from above is more serious, resulting in increased wear of the cover brick and shortening its service life. As the erosion continues, the overall structure of the throat may be damaged, thus affecting its sealing performance. Once the seal fails, the glass liquid may overflow outside the furnace body under the action of pressure, triggering serious safety accidents. At the same time, frequent maintenance and replacement of the throat cover brick not only increase the production cost, but also cause frequent shutdowns of the production line, seriously affecting the production efficiency. Summary of the Utility Model

[0003] The technical problem to be solved by the present disclosure is to provide a throat structure of a furnace, which effectively reduces the erosion degree of the cover brick by fluid (such as molten glass), and then significantly extends the service life of the throat. It is not only beneficial to prevent fluid leakage, but also can greatly reduce the maintenance cost of the furnace.

[0004] To solve the above technical problem, an embodiment of the present disclosure provides a throat structure of a furnace, including: a brick body; a throat formed by surrounding the brick body; wherein, the brick body includes a cover brick located above the throat, the cover brick is provided with a chamfer on the inflow side of the throat, and a protective layer is provided on the fluid scouring wall of the cover brick.

[0005] In some embodiments, the brick body includes side bricks located on both sides of the throat, and the side bricks are provided with chamfers on the inflow side of the throat.

[0006] In some embodiments, a protective layer is provided on the fluid scouring wall of the side bricks.

[0007] In some embodiments, the cover brick forms an annular groove for installing the protective layer, and the depth of the annular groove is set corresponding to the thickness of the protective layer.

[0008] In some embodiments, the protective layer is wrapped along the circumferential side of the cover brick, and a splicing seam is formed at the connection of the protective layer.

[0009] In some embodiments, the splicing seam is located at the non-contact part between the cover brick and the fluid.

[0010] In some embodiments, the splicing seam is located at the ridge line of the cover brick.

[0011] In some embodiments, the protective layer includes a wear-resistant layer and a heat-absorbing layer arranged from the inside out. The heat-absorbing layer is located between the wear-resistant layer and the cover brick, and the wear-resistant layer is in contact with the fluid.

[0012] In some embodiments, the wear-resistant layer is a platinum wear-resistant layer or a platinum-rhodium wear-resistant layer.

[0013] In some embodiments, the heat-absorbing layer is a silicon carbide heat-absorbing layer or an alumina ceramic heat-absorbing layer.

[0014] Through the above technical solution, a liquid flow hole structure of a kiln furnace provided by the present disclosure includes a brick body. The liquid flow hole is formed by surrounding the brick body. The brick body includes a cover brick located above the liquid flow hole. The cover brick is provided with a chamfer on the inflow side of the liquid flow hole, and a protective layer is provided on the fluid scouring wall of the cover brick. Chamfering the cover brick enables the fluid to flow more smoothly without causing excessive wear of the cover brick. At the same time, a protective layer is provided on the fluid scouring wall, which can reduce the erosion of the fluid on the cover brick, thereby significantly extending the service life of the liquid flow hole. It not only helps to prevent fluid leakage but also can greatly reduce the maintenance cost of the kiln furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is a schematic structural diagram of a liquid flow hole of a kiln furnace disclosed in an embodiment of the present disclosure;

[0017] Figure 2 is a cross-sectional view of a liquid flow hole of a kiln furnace disclosed in an embodiment of the present disclosure;

[0018] Figure 3 is a schematic structural diagram of a liquid flow hole disclosed in an embodiment of the present disclosure.

[0019] Description of the reference numerals:

[0020] 1. Brick body; 1-1. Cover brick; 1-2. Side brick; 2. Liquid flow hole; 3. Protective layer; 3-1. Splicing seam. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The embodiments of the present disclosure will be further described in detail below in conjunction with the accompanying drawings and examples. The following detailed description of the examples and the drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific examples disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0022] The present disclosure provides these examples to make the present disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of the components and steps, the components of the materials, the numerical expressions and values set forth in these examples should be construed as merely exemplary, and not as limitations.

[0023] It should be noted that in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is greater than or equal to two; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0024] In addition, the "first", "second" and similar terms used in the present disclosure do not denote any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. The terms "comprising" or "including" and similar words mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.

[0025] It should also be noted that in the description of the present disclosure, unless otherwise clearly defined and limited, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0026] All terms used in this disclosure have the same meanings as those understood by those of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such herein.

[0027] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.

[0028] Referring to Figures 1 to 3 , this disclosure provides a throat structure of a kiln, including a brick body 1. A throat 2 is formed by surrounding the brick body 1. The brick body 1 includes a cover brick 1-1 located above the throat. The cover brick 1-1 is provided with a chamfer on the inflow side of the throat 2, and a protective layer 3 is provided on the fluid scouring wall of the cover brick 1-1. Chamfering the cover brick 1-1 enables the fluid to flow more smoothly without causing excessive wear of the cover brick. At the same time, the protective layer 3 is provided on the fluid scouring wall. The protective layer 3 has corrosion resistance and can effectively prevent chemical substances in the fluid from corroding the cover brick 1-1. The protective layer 3 also has heat resistance to resist the thermal shock of high-temperature fluid and protect the cover brick 1-1 from thermal damage, which can reduce the erosion of the fluid on the cover brick 1-1, thereby significantly extending the service life of the throat 2. This is not only conducive to preventing fluid leakage but also can greatly reduce the maintenance cost of the kiln. It should be noted that the performance of the protective layer 3 is selected with appropriate processes and materials to be conducive to protecting the brick body 1.

[0029] In some embodiments, the brick body 1 includes side bricks 1-2 located on both sides of the throat 2. The side bricks 1-2 are provided with chamfers on the inflow side of the throat, which can effectively disperse the impact force when the fluid enters, avoiding the fluid directly vertically impacting the surface of the brick body 1, thereby reducing the mechanical wear of the brick body 1. After passing through the chamfer, the flow direction of the fluid is guided and smoothed to a certain extent, reducing the turbulence phenomenon, and further reducing the erosion rate of the fluid on the side bricks 1-2, extending the service life of the side bricks 1-2. The degree of the chamfer is 40 to 65 degrees, which can help optimize the distribution of the fluid in the throat 2, ensure that the impact of the fluid on the throat 2 is evenly distributed on the brick body 1, and avoid excessive wear of the side bricks 1-2. Therefore, the workload of regular inspection and maintenance is also correspondingly reduced, reducing the maintenance cost.

[0030] In some embodiments, a protective layer 3 is provided on the fluid scouring wall of the side brick 1-2. The protective layer 3 has corrosion resistance, which can effectively prevent the chemical substances in the fluid from corroding the side brick 1-2. The protective layer 3 also has heat resistance to resist the thermal shock of high-temperature fluid and protect the side brick 1-2 from thermal damage. The protective layer 3 also has wear resistance, which further improves the wear resistance of the side brick 1-2 during long-term use and reduces the maintenance frequency and cost caused by wear.

[0031] In some embodiments, the cover brick 1-1 is formed with an annular groove for installing the protective layer 3. The depth of the annular groove is set corresponding to the thickness of the protective layer 3. By presetting the depth of the annular groove, it is ensured that the protective layer 3 is accurately positioned during installation, closely combined with the cover brick 1-1, increasing the stability and reliability of the overall structure, reducing the risk of the protective layer loosening or falling off, and avoiding the reduction of the protective effect due to improper installation. The protective layer 3 is closely fitted with the annular groove, which helps the cover brick 1-1 after covering the protective layer 3 to form a good sealing effect with the adjacent brick 1 and helps prevent fluid leakage.

[0032] Regarding the annular groove, it should be noted that the area of the protective layer 3 covered by the cover brick 1-1 is machined, and a thickness of 1-1.5 mm is machined off to form the annular groove. The thickness of the protective layer 3 is 1-1.5 mm, and the two thicknesses correspond to each other to ensure that the surface of the cover brick 1-1 after covering the protective layer 3 is coplanar with the surface of the adjacent brick 1. In addition, referring to Figure 1 , the circumferential side surfaces of the cover brick 1-1 except for the transverse end surfaces can also be machined, and the machining thickness should correspond to the thickness of the protective layer 3.

[0033] In some embodiments, the protective layer 3 is wrapped along the circumferential side of the cover brick 1-1, and a splicing seam 3-1 is formed at the connection of the protective layer 3. Combining with the above embodiments of the annular groove, the existing cover brick 1-1 can be transformed.

[0034] In some embodiments, the splicing seam 3-1 is located at the non-contact part of the cover brick 1-1 and the fluid, so as to avoid the splicing seam 3-1 with weak structural strength from being scoured by the fluid and ensure the service life.

[0035] In some embodiments, referring to Figure 2 , the splicing seam 3-1 is located at the ridge line of the cover brick 1-1, which is convenient for splicing after the protective layer 3 is wrapped.

[0036] Referring to Figure 1 and Figure 2, it should be noted that regarding the position of the covering protective layer 3 on the cover brick 1-1 and the splicing seam 3-1, the sealing performance at the splicing seam 3-1 is relatively weak. When the fluid does not directly contact or impact this area, it is beneficial to control the risk of fluid leakage into the contact surface between the cover brick 1-1 and the protective layer 3, and increase the sealing performance and reliability of the covering protective layer 3 on the cover brick 1-1. Setting the splicing seam 3-1 at the ridge line instead of the plane area directly passed by the fluid can reduce the disturbance during the fluid flow process, is beneficial to the smooth flow of the fluid, and reduces the fluid resistance. The splicing seam 3-1 is located at the ridge line of the cover brick 1-1, and the curvature change at the ridge line is relatively small, making it easier to achieve welding compared to other positions, which helps to simplify the manufacturing and installation process of the protective layer 3. In addition, setting the splicing seam 3-1 at a non-fluid contact part is convenient for observing the state of the splicing seam 3-1 during daily inspection and maintenance, and discovering and handling it in a timely manner.

[0037] In some embodiments, the protective layer 3 includes a wear-resistant layer and a heat-absorbing layer arranged from the inside to the outside. The heat-absorbing layer is located between the wear-resistant layer and the cover brick 1-1, and the wear-resistant layer is in contact with the fluid. The protective layer 3 is located at the liquid flow hole 2, and the surface in contact with the fluid is the inner surface, and the surface in contact with the brick body 1 is the outer surface. The wear-resistant layer is directly in contact with the fluid, which can reduce the wear of the fluid on the protective layer 3. The heat-absorbing layer is located between the wear-resistant layer and the cover brick 1-1, absorbs and disperses the heat of the fluid to the cover brick 1-1, and avoids undue damage to the wear-resistant layer caused by high temperature, thereby improving the service life of the protective layer 3.

[0038] In some embodiments, the wear-resistant layer is a platinum wear-resistant layer or a platinum-rhodium wear-resistant layer. Platinum and platinum-rhodium alloys have very strong corrosion resistance and can remain stable even in harsh chemical environments. At the same time, both platinum and platinum-rhodium alloys have relatively high hardness and toughness, and also have good thermal stability, and can maintain their structural integrity under high-temperature conditions. Platinum-rhodium alloy is an alloy composed of two metals, platinum (Platinum, Pt) and rhodium (Rhodium, Rh). This alloy has good high-temperature stability and corrosion resistance.

[0039] Regarding the tooling of the protective layer 3, taking the platinum protective layer as an example of the protective layer 3, along the circumferential side of the cover brick 1-1, a structure adapted to the structure of the cover brick 1-1 is folded out, and then it is covered. During the covering process, a wooden tool is used to continuously flatten the platinum protective layer to make the platinum protective layer keep the same shape as the cover brick 1-1, keep the cover brick 1-1 in close contact with the adjacent brick body 1, and no bulges can be formed in the covered area of the platinum protective layer. Finally, at the ridge line where the cover brick 1-1 is not in contact with the fluid (such as glass liquid), the platinum protective layer is welded to form a whole, and the two ends of the cover brick 1-1 are not covered with the platinum protective layer and remain in a free expansion state.

[0040] In some embodiments, the heat absorption layer is a silicon carbide heat absorption layer or an alumina ceramic heat absorption layer. Both silicon carbide and alumina ceramics have very high melting points and can maintain structural stability at extremely high temperatures while being able to quickly transfer heat.

[0041] In order to better understand the technical solution of the present disclosure, the following is an explanation in combination with relatively preferred technical features.

[0042] See also Figures 1 to 3 The present invention provides a flow hole structure of a kiln, comprising: a brick body 1, a flow hole 2 formed by the brick body 1, wherein the brick body 1 comprises a cover brick 1-1 located above the flow hole and side bricks 1-2 located on both sides of the flow hole 2, the cover brick 1-1 is provided with a chamfer on the inflow side of the flow hole 2, and a protective layer 3 is provided on the fluid scouring wall of the cover brick 1-1, the side brick 1-2 is provided with a chamfer on the inflow side of the flow hole, and the cover brick 1-1 is formed with a protective layer for installing An annular groove is provided for the protective layer 3, and the depth of the annular groove is set corresponding to the thickness of the protective layer 3. The protective layer 3 is coated along the circumference of the cover brick 1-1. A joint seam 3-1 is formed at the connection of the protective layer 3. The joint seam 3-1 is located at the ridge of the cover brick 1-1. The protective layer 3 includes a wear-resistant layer and a heat-absorbing layer arranged from the inside to the outside. The heat-absorbing layer is located between the wear-resistant layer and the cover brick 1-1. The wear-resistant layer is in contact with the fluid. The wear-resistant layer is a platinum wear-resistant layer, and the heat-absorbing layer is a silicon carbide heat-absorbing layer.

[0043] The tooling method of the protective layer 3 is as follows: the area of ​​the protective layer 3 covered by the cover brick 1-1 is cut and a certain thickness is machined off to form an annular groove. The machining size is close to the thickness of the protective layer 3 to facilitate mutual cooperation, ensuring that the cover brick 1-1 is coplanar with the surface of the adjacent brick body 1 after the protective layer 3 is covered. The protective layer 3 is folded along the side of the cover brick 1-1 according to the structure of the cover brick 1-1 to form a corresponding structure, and then covered. During the covering process, the protective layer 3 is continuously flattened using wooden tools to keep the protective layer 3 consistent with the shape of the cover brick 1-1, keep the cover brick 1-1 and the adjacent brick body 1 tightly fitted, and the area covered by the protective layer 3 cannot form a bulge. Finally, the protective layer 3 is welded at the ridge where the cover brick 1-1 is not in contact with the fluid (for example: glass liquid) to form a whole. The two ends of the cover brick 1-1 are not covered with the protective layer 3 and remain in a free expansion state.

[0044] The above solution has the following advantages. The cover brick 1-1 and the side brick 1-2 are provided with chamfers on the inflow side of the liquid flow hole, and a protective layer 3 is provided on the fluid scouring wall of the cover brick 1-1. The chamfers enable the fluid to flow more smoothly without causing excessive wear of the cover brick 1-1 and the side brick 1-2. At the same time, the protective layer 3 provided on the fluid scouring wall of the cover brick 1-1 can reduce the erosion of the fluid on the cover brick 1-1, thereby significantly extending the service life of the liquid flow hole 2. This is not only beneficial to preventing fluid leakage but also can greatly reduce the maintenance cost of the kiln furnace.

[0045] So far, the embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0046] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or partial technical features can be equivalently replaced without departing from the scope and spirit of the present disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way.

Claims

1. A liquid flow hole structure of a kiln, characterized in that: include: Brick body (1); A liquid flow hole (2), wherein the liquid flow hole (2) is formed by surrounding the brick body (1); The brick body (1) comprises a cover brick (1-1) located above the flow hole, the cover brick (1-1) is provided with a chamfer on the inflow side of the flow hole (2), and a protective layer (3) is provided on the fluid scouring wall of the cover brick (1-1).

2. The liquid flow hole structure of the kiln according to claim 1, characterized in that: The brick body (1) comprises side bricks (1-2) located on both sides of the liquid flow hole (2); the side bricks (1-2) are located on the inflow side of the liquid flow hole and are provided with chamfers.

3. The liquid flow hole structure of the kiln according to claim 2, characterized in that: A protective layer (3) is provided on the fluid scouring wall of the side brick (1-2).

4. The liquid flow hole structure of the kiln according to claim 1, characterized in that: The cover brick (1-1) is formed with an annular groove for installing the protective layer (3), and the depth of the annular groove is set corresponding to the thickness of the protective layer (3).

5. The liquid flow hole structure of the kiln according to claim 1, characterized in that: The protective layer (3) is coated along the circumference of the cover brick (1-1), and a joint seam (3-1) is formed at the connection of the protective layer (3).

6. The liquid flow hole structure of the kiln according to claim 5, characterized in that: The joint seam (3-1) is located at a non-contact position between the cover brick (1-1) and the fluid.

7. The liquid flow hole structure of the kiln according to claim 6, characterized in that: The joint seam (3-1) is located at the ridgeline of the cover tile (1-1).

8. The liquid flow hole structure of the kiln according to claim 1, characterized in that: The protective layer (3) comprises a wear-resistant layer and a heat-absorbing layer arranged from the inside to the outside, the heat-absorbing layer is located between the wear-resistant layer and the cover brick (1-1), and the wear-resistant layer is in contact with the fluid.

9. The liquid flow hole structure of the kiln according to claim 8, characterized in that: The wear-resistant layer is a platinum wear-resistant layer or a platinum-rhodium wear-resistant layer.

10. The liquid flow hole structure of the kiln according to claim 8, characterized in that: The heat absorption layer is a silicon carbide heat absorption layer or an alumina ceramic heat absorption layer.

Images