Grid section assembly

Abstract

The utility model relates to the technical field of fire grate bars, in particular to a grate bar assembly which is arranged between two bases and comprises at least two grate bar units. Each grid section unit comprises a grid section body, a connecting block and a limiting block, the two ends of each grid section body are in lap joint with the upper side surfaces of the two bases respectively, limiting parts extending towards the grid section bodies are arranged on the sides, close to the grid section bodies, of the bases, and the upper ends of the connecting blocks are connected with the lower sides of the ends of the grid section bodies. The side, close to the base, of the lower portion of the connecting block is connected with a limiting block, and the upper side face of the limiting block, the outer side face of the connecting block and the lower side face of the end of the grid section body define a limiting space correspondingly matched with the limiting part, so that the grid section units can move in the vertical direction relative to the limiting part. The grate bar has the characteristics of being easy to clean and replace, and can solve the problems of grate bar blockage, high cleaning difficulty and difficulty in replacement when solid waste is pyrolyzed, incinerated or sintered by equipment such as a fixed bed, a grate furnace and a sintering machine.

Description

Technical Field

[0001] This utility model relates to the field of grate bar technology, specifically to a grate bar assembly. Background Technology

[0002] In the field of solid waste treatment, when using equipment such as fixed-bed furnaces, grate furnaces, and sintering machines to pyrolyze, incinerate, or sinter solid waste, the material is usually arranged on grates, which play a crucial role in ventilation and solid waste support. However, in actual industrial production scenarios, the composition of materials is extremely complex, including a large number of highly corrosive materials, which have a strong corrosive effect on the grates. If even one grate bar is damaged and falls off during the production process, it can potentially lead to a serious quality incident. Furthermore, replacing traditional interlocking grates after deformation is difficult. At the same time, some materials are highly adhesive, frequently causing blockages in the grate gaps, thus adversely affecting the solid waste treatment efficiency and production capacity. Utility Model Content

[0003] The purpose of this utility model is to provide a grate assembly that is easy to clean and replace, which can solve the problems of grate blockage, difficulty in cleaning, and difficulty in replacement when pyrolyzing, incinerating, or sintering solid waste in equipment such as fixed beds, grate furnaces, and sintering machines.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A grate assembly is arranged between two bases and includes at least two grate units. Each grate unit includes a grate body, a connecting block, and a limiting block. The two ends of the grate body overlap with the upper surfaces of the two bases respectively. The base has a limiting portion extending towards the grate body on the side near the grate body. The upper end of the connecting block is connected to the lower side of the end of the grate body, and the lower part of the connecting block is connected to the limiting block on the side near the base. The upper side of the limiting block, the outer side of the connecting block, and the lower side of the end of the grate body define a limiting space that corresponds to and cooperates with the limiting portion, so that the grate unit can move in the vertical direction relative to the limiting portion.

[0006] Furthermore, the connecting block and the limiting block are integrally formed, and the connecting block is detachably connected to the lower side of the end of the grate bar body.

[0007] Furthermore, the connecting block is integrally formed with the grate bar body, and the limiting block is detachably connected to the lower part of the connecting block near the base.

[0008] Furthermore, the connecting block is detachably connected to the lower end of the grate bar body, and the limiting block is detachably connected to the lower part of the connecting block near the base.

[0009] Furthermore, the cross-section of the grate bar body is semi-circular, circular, elliptical, isosceles trapezoidal, regular hexagonal, or regular octagonal.

[0010] Furthermore, a gap positioning block is fixed on one side of the grate body near the adjacent grate unit, and the gap positioning block limits the gap between two adjacent grate units.

[0011] This utility model has the following unexpected beneficial effects:

[0012] 1. The grate unit of this utility model can move vertically relative to the limiting part. This movable design allows the grate unit to move vertically during use, loosening the blockage by utilizing the displacement generated by the vertical movement of the grate unit. Compared to traditional fixed-installation grates, the situation of material getting stuck between the grates is improved, making it easier to clear the material blocking the gaps between the grates. This ensures the ventilation effect of the grates, maintains the normal operation of the solid waste treatment equipment, and avoids affecting the solid waste treatment effect and capacity due to grate blockage. Furthermore, it reduces the risk of material corrosion to the grates. Because the material can pass smoothly through the gaps between the grates, the opportunity for prolonged contact between the material and the grates is reduced, thus mitigating the erosion caused by corrosive materials, extending the service life of the grates, and improving the stability and reliability of the equipment operation.

[0013] 2. This utility model's single grate bar unit cooperates with the base through a connecting block and a limiting block. This structural design makes the installation and disassembly of the grate bar unit relatively simple. When a grate bar unit is damaged and needs to be replaced, simply disengage the connecting block, the limiting block, and the limiting part of the base to easily remove the damaged grate bar unit and replace it with a new one. Compared to the difficulty of replacing deformed traditional interlocking grate bars, this greatly reduces the difficulty of grate bar replacement and reduces equipment maintenance time and labor costs.

[0014] 3. The structural design of the grate assembly described in this utility model facilitates the replacement of the grate bars, allowing for timely replacement when damaged, thus preventing minor issues from escalating into major accidents. Furthermore, its movable design and ease of cleaning ensure the continuous normal function of the grate bars, guaranteeing stable ventilation and solid waste handling capabilities during pyrolysis, incineration, or sintering of solid waste. This ensures stable operation of the solid waste treatment equipment and guarantees the continuity and safety of production. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model.

[0016] Figure 1 A schematic diagram of the structure of the grate assembly according to an embodiment of the present invention is shown.

[0017] Figure 2 One of the cross-sectional schematic diagrams of the grate assembly described in this utility model embodiment is shown.

[0018] Figure 3 This is a second schematic cross-sectional view of the grate assembly according to an embodiment of the present invention.

[0019] Figure 4 The third cross-sectional schematic diagram of the grate assembly according to an embodiment of the present invention is shown.

[0020] Figure 5 The fourth cross-sectional schematic diagram of the grate assembly according to an embodiment of the present invention is shown.

[0021] Figure 6 The fifth schematic cross-sectional view of the grate assembly according to an embodiment of the present invention is shown.

[0022] In the figure, 1—base, 11—limiting part, 2—grate bar unit, 21—grate bar body, 22—connecting block, 23—limiting block, 24—gap positioning block, 3—first bolt, 4—second bolt. Detailed Implementation

[0023] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.

[0024] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0025] In one embodiment, the present invention provides a grate assembly, see below. Figure 1As shown, the grate assembly is arranged between two bases 1 and includes at least two grate units 2. Each grate unit 2 includes a grate body 21, a connecting block 22, and a limiting block 23. The two ends of the grate body 21 overlap with the upper surfaces of the two bases 1 respectively. The base 1 has a limiting part 11 extending toward the grate body 21 on the side near the grate body 21. The upper end of the connecting block 22 is connected to the lower side of the end of the grate body 21, and the lower part of the connecting block 22 is connected to the limiting block 23 on the side near the base 1. The upper side of the limiting block 23, the outer side of the connecting block 22, and the lower side of the end of the grate body 21 define a limiting space that corresponds to and cooperates with the limiting part 11, so that the grate unit 2 can move in the vertical direction relative to the limiting part 11.

[0026] Because the grate unit 2 of this invention can move vertically relative to the limiting part 11, this movable design allows the grate assembly to loosen the blockage when material gets stuck between the grate units 2 during use, by moving the grate units 2 up and down and utilizing the displacement generated by their movement. Compared to traditional fixed-installation grates, the situation of material getting stuck between the grate bars is improved, making it easier to clean the material blocking the gaps between the grate bars, thereby ensuring the ventilation effect of the grate bars, maintaining the normal operation of the solid waste disposal equipment, and avoiding the impact of grate blockage on the solid waste disposal effect and capacity. Furthermore, it reduces the risk of material corrosion to the grate bars, because when the material can pass smoothly through the gaps between the grate bars, the opportunity for prolonged contact between the material and the grate bars is reduced, thus mitigating the erosion of the grate bars by corrosive materials, extending the service life of the grate bars, and improving the stability and reliability of equipment operation.

[0027] This utility model's single grate bar unit 2 is connected to the base 1 via a connecting block 22 and a limiting block 23. This structural design makes the installation and disassembly of the grate bar unit 2 relatively simple. When a grate bar unit 2 is damaged and needs to be replaced, simply disengage the connecting block 22, the limiting block 23, and the limiting part 11 of the base 1 to easily remove the damaged grate bar unit and replace it with a new one. Compared to the difficulty of replacing deformed traditional interlocking grate bars, this greatly reduces the difficulty of grate bar replacement and reduces equipment maintenance time and labor costs.

[0028] The structural design of the grate assembly described in this utility model facilitates grate replacement, allowing for timely replacement when grate bars are damaged, thus preventing minor issues from escalating into major accidents. Furthermore, its movable design and ease of cleaning ensure the continuous normal function of the grate bars, guaranteeing stable ventilation and solid waste handling capabilities during pyrolysis, incineration, or sintering of solid waste. This ensures stable operation of the solid waste treatment equipment and guarantees the continuity and safety of production.

[0029] As a preferred embodiment of this utility model, see [link to relevant documentation]. Figure 2As shown, the connecting block 22 and the limiting block 23 are integrally formed, and the connecting block 22 is detachably connected to the lower end of the grate body 21.

[0030] The connecting block 22 and the limiting block 23 are integrally formed, reducing the connection gaps between components and making the overall structure of the grate unit 2 more stable. During the operation of solid waste treatment equipment, the grate is affected by the impact, friction, and thermal expansion and contraction of materials. The integrally formed structure can better withstand these external forces, preventing the grate body from shifting or falling off due to loosening of the connection parts, ensuring the stable operation of the grate assembly under complex working conditions, and extending the service life of the grate assembly.

[0031] Furthermore, the one-piece design simplifies the number of parts and the installation steps. During installation, there is no need to install the connecting block 22 and the limiting block 23 separately, reducing positioning and assembly time and improving installation efficiency. At the same time, reducing the number of parts also lowers production and procurement costs, improving overall economic efficiency.

[0032] The connecting block 22 is detachably connected to the lower end of the grate body 21. When the grate body needs to be replaced due to wear, corrosion, or other issues, only the connecting part between the connecting block 22 and the grate body 21 needs to be removed, allowing the grate body 21 to be easily removed for replacement. This design not only shortens the equipment's downtime for maintenance but also reduces maintenance difficulty and improves equipment availability. Furthermore, during routine maintenance, if a problem is found with the connecting block 22 or the limiting block 23, since they are detachable from the grate body 21, the connecting block 22 and the limiting block 23 can be inspected, repaired, or replaced individually, further reducing maintenance costs.

[0033] For example, the connecting block 22 is detachably connected to the lower end of the grate body 21 via a first bolt 3. Using common tools, operators can easily assemble the connecting block 22 to the lower end of the grate body 21 and secure it by tightening the first bolt 3. When the grate body 21 needs to be replaced, the first bolt 3 is unscrewed in the reverse direction to quickly separate the connecting block 22 and the grate body 21. The entire process is convenient, greatly shortening installation and replacement time and improving equipment maintenance efficiency.

[0034] As a preferred embodiment of this utility model, see [link to relevant documentation]. Figure 3As shown, the connecting block 22 is integrally formed with the grate bar body 21, and the limiting block 23 is detachably connected to the lower part of the connecting block 22 near the base. When the limiting block 23 is worn, corroded, or otherwise damaged, it is not necessary to replace the entire grate bar unit 2; only the limiting block 23 needs to be disassembled and replaced separately. This greatly reduces maintenance costs and difficulty, shortens equipment downtime, and improves equipment operating efficiency. At the same time, the detachable connection method allows for convenient replacement of limiting blocks 23 of different specifications or materials according to actual needs under different working conditions, enhancing the adaptability of the grate bar assembly.

[0035] When installing the grate assembly, since the connecting block 22 and the grate body 21 are an integral unit, the installation operation is simpler, and the grate body 21 can be installed onto the base 1 more quickly and accurately. At the same time, the detachable connection of the limiting block 23 facilitates fine-tuning of the position and range of motion of the grate body 21 during installation, ensuring precise engagement between the grate body 21 and the limiting part 11 of the base 1. This allows for smoother vertical movement of the grate body 21, further improving the performance of the grate assembly.

[0036] For example, the limiting block 23 and the lower part of the connecting block 22 near the base are detachably connected by a second bolt 4. Installers can easily adjust the position of the limiting block 23 by tightening or loosening the bolt, making the fit between the limiting block 23 and the connecting block 22 more precise and ensuring that the movement gap between the grate body 21 and the limiting part 11 of the base 1 meets the design requirements. This helps to quickly complete the installation and commissioning of the grate assembly in the early stages of equipment installation, reducing installation time and labor costs.

[0037] In a preferred embodiment of this utility model, the connecting block 22 is detachably connected to the lower end of the grate body 21, and the limiting block 23 is detachably connected to the lower part of the connecting block 22 near the base 1. This arrangement makes maintenance of each part of the grate assembly extremely convenient. When the grate body 21 is worn due to material erosion and corrosion, the connecting part between the connecting block 22 and the grate body 21 can be directly disassembled to replace the grate body 21 without major repairs to the entire assembly. Similarly, if the limiting block 23 is damaged due to frequent friction with the base 1 during long-term use, it can also be easily disassembled and replaced, significantly reducing maintenance costs and time, minimizing equipment downtime, and ensuring the continuity of solid waste disposal work.

[0038] Since the connecting block 22 is detachably connected to the grate body 21 and the limiting block 23 respectively, different materials and specifications of the grate body 21, connecting block 22 or limiting block 23 can be flexibly replaced when facing different working conditions or equipment upgrade needs. For example, when dealing with highly corrosive solid waste, the grate body 21 with better corrosion resistance can be replaced; if the equipment vibrates greatly during operation, more robust connecting block 22 and limiting block 23 can be selected to improve the stability of the components, thereby enhancing the adaptability of the grate assembly to diverse working environments.

[0039] Furthermore, the detachable connection method allows for standardized production of all components of the grate assembly, enabling compatibility between grate bodies 21, connecting blocks 22, and limiting blocks 23 produced in different batches. During production, the production quantity of each component can be flexibly adjusted according to actual needs, avoiding waste caused by the need to replace the entire assembly due to the damage of a single component. In terms of inventory management, only a certain number of commonly used specifications need to be stocked, reducing inventory backlog and lowering production and inventory management costs.

[0040] As a preferred embodiment of this utility model, see [link to relevant documentation]. Figures 2 to 6 As shown, the cross-section of the grate bar body 21 is semi-circular, circular, elliptical, isosceles trapezoidal, regular hexagonal or regular octagonal.

[0041] See Figure 2 As shown, the cross-section of the grate body 21 is a regular hexagon. The hexagonal structure has high stability and can resist material impact and wear, maintaining stable performance under harsh working conditions. Furthermore, it can provide specific material flow channels while optimizing ventilation paths, balancing material handling and ventilation needs.

[0042] See Figure 3 As shown, the cross-section of the grate body 21 is elliptical, which provides both good compressive strength and, due to its smooth shape, good material flow, making it suitable for scenarios requiring both strength and material handling efficiency. The special curved shape optimizes the airflow path, improves ventilation efficiency, and facilitates solid waste disposal reactions.

[0043] See Figure 4 As shown, the cross-section of the grate bar body 21 is semi-circular. The semi-circle has no sharp edges or corners, allowing material to slide smoothly through the gaps between the grate bars without obstruction, reducing the risk of blockage and ensuring a stable solid waste disposal process. It also facilitates uniform airflow, reducing airflow resistance and providing sufficient oxygen for solid waste pyrolysis, incineration, or sintering, promoting a complete reaction. With no dead corners for cleaning, rinsing and vibration cleaning are easy when material adheres, saving maintenance time and labor costs.

[0044] See Figure 5As shown, the cross-section of the grate body 21 is an isosceles trapezoid, and the inclined side guides the material to slide down, avoiding accumulation and ensuring orderly solid waste disposal. It effectively disperses solid waste pressure to the support points, enhancing load-bearing capacity and adapting to the handling of heavier materials. Furthermore, the inclined side facilitates the insertion of cleaning tools into the gaps, resulting in good cleaning performance.

[0045] See Figure 6 As shown, the cross-section of the grate body 21 is a regular octagon, with a robust structure and excellent stability, making it suitable for use in complex and harsh solid waste disposal environments. Furthermore, it can form regular material and airflow channels, ensuring efficient and stable solid waste disposal processes.

[0046] See Figure 1 As shown, the length L of the grate body 21 is 200~1000mm. During the process of bearing solid waste, the grate body 21 will be subjected to certain pressure and stress. Within the length range of 200~1000mm, the stress distribution of the grate body 21 is relatively reasonable, effectively avoiding excessive bending or deformation in the middle section due to excessive length, and stress concentration at the connection points due to excessively short length, thus ensuring the structural strength and stability of the grate body 21.

[0047] A grate body 21 with a length range of 200~1000mm is easier to operate during installation and maintenance. An excessively long grate body 21 may increase the difficulty and complexity of installation, and also make maintenance and replacement more difficult. A grate body 21 of appropriate length facilitates installation, disassembly and daily inspection by workers, reducing labor intensity and maintenance costs.

[0048] Regardless of the shape of the cross-section of the grate body 21, its equivalent width B ranges from 20 to 40 mm, and its equivalent height H ranges from 15 to 50 mm.

[0049] If the equivalent width B is less than 20mm, the gaps between grate units 2 will be relatively large, potentially causing some smaller solid waste particles to fall directly, affecting the treatment effect. Simultaneously, an excessively small width will reduce the load-bearing capacity of grate unit 2, making it susceptible to damage under material pressure. If the width is greater than 40mm, it will reduce the total area of ​​the gaps between grate units 2, affecting ventilation and hindering sufficient contact between solid waste and oxygen during pyrolysis, incineration, or sintering, thus reducing treatment efficiency. Controlling the equivalent width B between 20 and 40mm achieves a balance between material handling and ventilation performance while ensuring the load-bearing capacity of grate unit 2. Furthermore, this width range offers good versatility, adapting to various solid waste treatment equipment and different types of solid waste. Whether in small experimental equipment or large industrial production facilities, grates within this width range can be installed and used effectively, improving the applicability and replaceability of the grate assembly.

[0050] If the equivalent height H is less than 15mm, the structural strength of the grate body 21 may be insufficient, making it difficult to withstand the weight of solid waste and the impact force during material flow, and it is prone to deformation or damage. If the equivalent height H is greater than 50mm, it will increase the space occupied by the equipment, and may also cause the airflow to encounter greater resistance when passing through the gaps between the grate bars, affecting the ventilation effect. An equivalent height H range of 15~50mm can ensure that the grate unit 2 has sufficient strength, while making reasonable use of equipment space and maintaining good ventilation performance.

[0051] When the cross-section of the grate body 21 is an isosceles trapezoid, the angle between the top edge and the waist is between 30° and 60°. If the angle is less than 30°, the slope is too gentle, causing the material to slide down slowly and potentially leading to material accumulation and reduced processing efficiency. If the angle is greater than 60°, the slope is too steep, and the material may slide down too quickly, causing some material to pass through the grate gaps without sufficient reaction, thus reducing processing quality. An angle range of 30° to 60° allows the material to slide down the slope at a suitable speed, ensuring smooth passage while allowing sufficient time for pyrolysis, incineration, or sintering reactions of the solid waste on the grate. Furthermore, this angle range helps to evenly distribute the pressure of the solid waste onto the grate's support structure, improving the load-bearing capacity and structural stability of the grate unit 2. Under heavy material pressure, a suitable angle reduces the risk of grate deformation and damage, extending the grate's service life.

[0052] As a preferred embodiment of this utility model, see [link to relevant documentation]. Figures 1 to 6 As shown, a gap positioning block 24 is fixed on one side of the grate body 21 near the adjacent grate unit 2, and the gap positioning block 24 limits the gap between two adjacent grate units 2.

[0053] The gap positioning block 24 precisely defines the gap between two adjacent grate units 2. A suitable grate gap is crucial in solid waste disposal. If the gap is too large, some solid waste may fall directly, affecting the disposal effect; if the gap is too small, it can easily cause material blockage. The gap positioning block 24 ensures that the grate gap remains within the set range, ensuring that solid waste is evenly distributed on the grate, making ventilation and solid waste load more stable, thereby improving the operating efficiency and disposal quality of the solid waste disposal equipment.

[0054] When installing the grate assembly, the gap positioning block 24 serves a positioning function, simplifying the installation process. Installers no longer need to repeatedly measure and adjust the gap between adjacent grate units 2; they only need to install the grate body 21 with the gap positioning block 24 according to the design requirements to ensure that the gap between adjacent grate units 2 meets the standard, greatly improving installation efficiency and reducing installation time and labor costs.

[0055] The gap positioning block 24 is fixed on the grate body 21, which not only limits the gap, but also enhances the overall structural stability of the grate assembly to a certain extent. The gap positioning block 24 can limit the relative displacement between the grate bars, so that the adjacent grate units 2 maintain a relatively stable position relationship when subjected to external forces such as material impact and vibration, reducing the risk of structural damage caused by the shaking or displacement of the grate units 2, and extending the service life of the grate assembly.

[0056] The above embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model are all within the protection scope of the present utility model.

Claims

1. A grate assembly, arranged between two bases (1), characterized in that: Includes at least two grate bar units (2); The single grate bar unit (2) includes a grate bar body (21), a connecting block (22), and a limiting block (23). The two ends of the grate bar body (21) are respectively connected to the upper surfaces of two bases (1). The base (1) is provided with a limiting part (11) extending towards the grate bar body on the side near the grate bar body (21). The upper end of the connecting block (22) is connected to the lower side of the end of the grate bar body (21). The lower part of the connecting block (22) is connected to the limiting block (23) on the side near the base (1). The upper side of the limiting block (23), the outer side of the connecting block (22), and the lower side of the end of the grate bar body (21) define a limiting space that corresponds to and cooperates with the limiting part (11), so that the grate bar unit (2) can move in the vertical direction relative to the limiting part (11).

2. The grate assembly according to claim 1, characterized in that: The connecting block (22) and the limiting block (23) are integrally formed, and the connecting block (22) is detachably connected to the lower end of the grate body (21).

3. The grate assembly according to claim 1, characterized in that: The connecting block (22) is integrally formed with the grate body (21), and the limiting block (23) is detachably connected to the lower part of the connecting block (22) near the base (1).

4. The grate assembly according to claim 1, characterized in that: The connecting block (22) is detachably connected to the lower end of the grate body (21), and the limiting block (23) is detachably connected to the lower part of the connecting block (22) near the base (1).

5. The grate assembly according to claim 1, characterized in that: The cross-section of the grate body (21) is semi-circular, circular, elliptical, isosceles trapezoid, regular hexagon or regular octagon.

6. The grate assembly according to claim 1, characterized in that: The grate body (21) has a gap positioning block (24) fixed on the side near the adjacent grate unit (2), and the gap between two adjacent grate units (2) is defined by the gap positioning block (24).

Images