A raw material warming device

Abstract

The utility model discloses a raw material bed warming device, including the serpentine heating coil pipe that lays on raw material ground, the inside gap of serpentine heating coil pipe supports a plurality of dead angleless support framework, a plurality of support framework front and back end are provided with the edge framework of the elbow portion of covering serpentine heating coil pipe, the support framework of being at the most outside of serpentine heating coil pipe is connected with inclined support, and the utility model through raw material warehouse ground sets up serpentine heating coil pipe, and sets up support framework, edge framework and apron subassembly at serpentine heating coil pipe, has realized the even heating and heat energy maintenance of raw material, has effectively utilized the surplus steam of waste heat boiler, has reduced the advantage such as fuel consumption of boiling furnace, improved the overall energy efficiency of thermodynamic system.

Description

Technical Field

[0001] The utility model relates to the field of raw material warm beds, and particularly relates to a raw material warm bed device. Background Art

[0002] During the production process of a sulfuric acid plant, raw materials such as pyrite are usually stacked on the ground of the raw material warehouse and transported to a fluidized bed furnace for roasting treatment through a loader and a conveyor belt. This traditional treatment method has significant defects: First, in winter or cold regions, the temperature of raw materials is often lower than the ambient temperature, and directly entering the fluidized bed furnace will greatly increase the roasting energy consumption; Second, the excess steam heat energy generated by the waste heat boiler配套 with the fluidized bed furnace is often not effectively utilized, resulting in energy waste. More specifically, the existing raw material stacking method lacks an effective preheating system and cannot use the excess steam of the waste heat boiler to preheat the raw materials, which not only increases the fuel consumption of the fluidized bed furnace but also leads to low overall energy efficiency of the thermal system. In addition, the raw material stacking area lacks a reasonable support and covering structure, making it difficult to achieve uniform heating and heat retention, further reducing the preheating effect. Content of the Utility Model

[0003] In order to solve the above existing problems, the utility model provides a raw material warm bed device.

[0004] The utility model is realized through the following technical solutions:

[0005] The present application provides a raw material warm bed device, including a serpentine heating coil laid on the raw material ground. A number of dead - end - free support skeletons are supported in the internal voids of the serpentine heating coil. Edge skeletons covering the bent heads of the serpentine heating coil are provided at the front and rear ends of a number of the support skeletons. The support skeleton at the outermost part of the serpentine heating coil is connected with an inclined support.

[0006] Furthermore, the present application also proposes that the support skeleton is located in the void between adjacent straight pipes of the serpentine heating coil. The cross - section of the support skeleton is an inverted trapezoidal structure for easy placement, and arc surfaces that fit the straight pipes of the serpentine heating coil are provided on both sides thereof. Through holes are provided inside the support skeleton.

[0007] Furthermore, the present application also proposes that a number of embedding holes for inserting the bent heads are opened on one end face of the edge skeleton. The outer side of the edge skeleton is inclined downward, and a through - hole passing through the inlet and outlet of the serpentine heating coil is opened on one of the edge skeletons.

[0008] Furthermore, the present application also proposes that sunken placement grooves are provided on the upper parts of the edge skeleton and the inclined support, and the bottom of the placement groove is flush with the top of the support skeleton.

[0009] Furthermore, this application also proposes that a cover plate placed in a placement groove is placed on the upper part of several of the support frames, and the front and rear ends of the cover plate are provided with a plurality of fixing rods that can be inserted into the edge frame with fixing holes.

[0010] Compared with existing technologies, the beneficial effects of this utility model are as follows: This utility model achieves uniform heating and heat retention of raw materials by setting a serpentine heating coil on the ground of the raw material storage area and setting a support frame, edge frame and cover plate assembly on the serpentine heating coil. It effectively utilizes the excess steam of the waste heat boiler and has the advantages of reducing fuel consumption of the fluidized bed furnace and improving the overall energy efficiency of the thermal system. Attached Figure Description

[0011] Figure 1 This is an exploded view of the structure of this utility model;

[0012] Figure 2 yes Figure 1 Enlarged view of a local structure in the diagram;

[0013] Figure 3 This is a schematic diagram of the utility model without the cover plate installed;

[0014] Figure 4 This is a schematic diagram of the installation cover plate for this practical application;

[0015] In the diagram: 1. Raw material ground; 2. Serpentine heating coil; 3. Elbow head; 4. Support frame; 5. Arc surface; 6. Through hole; 7. Diagonal support; 8. Edge frame; 9. Fixing hole; 10. Embedding hole; 11. Placement groove; 12. Cover plate; 13. Fixing rod. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0017] like Figure 1-4 As shown, this application proposes a raw material warming bed device, including a serpentine heating coil laid on the raw material ground. Several support frames without dead angles are supported in the gaps inside the serpentine heating coil. The front and rear ends of the several support frames are provided with edge frames covering the bends of the serpentine heating coil. The outermost support frame of the serpentine heating coil is connected to an oblique support.

[0018] The serpentine heating coil can be laid on the existing ground using φ108*4mm seamless steel pipes as steam pipelines. This device uses a supporting frame to maintain the stability of the coil structure by laying the heating coil on the raw material ground, with edge frames protecting the bends and diagonal supports enhancing the overall structural strength. In practice, excess steam from a waste heat boiler can be introduced into the heating coil to raise the temperature of the pyrite raw material to 50-80℃ before it enters the fluidized bed furnace, thereby reducing roasting energy consumption. Compared with existing technologies, this device directly utilizes surplus steam heat energy, achieving cascaded energy utilization and solving the process requirement of raw material preheating.

[0019] Furthermore, this application also proposes that the support frame is located in the gap between the adjacent straight tubes of the serpentine heating coil, the cross-section of the support frame is an inverted trapezoidal structure for easy placement, and its two sides are provided with arc-shaped surfaces that fit with the straight tubes of the serpentine heating coil, and the support frame is provided with through holes.

[0020] Specifically, the inverted trapezoidal structure of the support frame facilitates placement and fixation within the gaps between adjacent straight tubes of the serpentine heating coil. The curved surface allows the support frame to fit snugly against the outer surface of the straight tubes of the serpentine heating coil, thereby enhancing the overall structural stability. The through-hole design reduces the weight of the support frame and also promotes uniform heat distribution. As a preferred embodiment, the support frame can be made of high-temperature resistant metal to ensure its structural strength and durability under high-temperature conditions. Furthermore, the size and number of through-holes can be adjusted according to actual needs to balance the strength and weight of the support frame.

[0021] Therefore, this technical solution solves the problems of inconvenient installation, poor fit with the heating coil, and excessive weight in existing technologies by optimizing the structural design of the support frame. The combination of the inverted trapezoidal cross-section and the arc-shaped surface allows the support frame to be quickly and accurately installed in the predetermined position and forms a stable connection with the serpentine heating coil. The through-hole design not only reduces the overall weight but also improves heat transfer efficiency. Compared with existing technologies, this solution significantly improves the structural stability and thermal efficiency of the heated bed device while reducing the difficulty of installation and maintenance.

[0022] Furthermore, this application also proposes that a plurality of insertion holes for inserting elbows are opened on one end face of the edge skeleton, the outer side of the edge skeleton is inclined downward, and one of the edge skeletons is opened with a through hole for passing through the inlet and outlet of the serpentine heating coil.

[0023] Specifically, the embedding holes are used to connect the edge frame to the bend of the serpentine heating coil, ensuring that the edge frame stably covers the bend. The outer side of the edge frame is angled downwards to facilitate the loader's up-and-down movement. Through holes allow the inlet and outlet of the serpentine heating coil to pass through the edge frame, ensuring unobstructed installation and maintenance of the heating coil. As a preferred embodiment, the embedding holes can be circular or square, and their number and position can be adjusted according to the shape and size of the bend.

[0024] Therefore, this technical solution solves the problems of unstable connection between the edge frame and the serpentine heating coil, as well as inconvenient installation and maintenance, by setting embedded holes and through holes. The embedded holes allow the edge frame to be stabilized at the bend, preventing displacement or loosening during raw material stacking or equipment operation.

[0025] Furthermore, this application also proposes that the upper part of the edge frame and the upper part of the inclined support are provided with sunken placement grooves, the bottom of which is flush with the top of the support frame.

[0026] The placement groove is a recessed structure machined into the upper surface of the edge frame and diagonal supports. Its depth is precisely calculated to ensure horizontal alignment with the top of the support frame. By setting a placement groove flush with the top of the support frame, stable installation of the cover plate and uniform stress distribution are achieved. Specifically, the placement groove structure creates a continuous load-bearing surface between the cover plate and the support frame, effectively avoiding the localized stress concentration problem caused by height differences in traditional installation methods. Therefore, when the cover plate bears material loads, it can evenly transmit pressure to the entire support frame system, significantly improving structural stability and service life. At the same time, the flush design facilitates rapid positioning and installation of the cover plate, reducing adjustment steps during assembly. This solution is particularly suitable for operating environments requiring frequent cover plate replacement or maintenance, improving maintenance efficiency while ensuring structural strength.

[0027] Furthermore, this application also proposes that a cover plate is placed in a placement groove on the upper part of the support frame, and multiple fixing rods with fixing holes on the front and rear ends of the cover plate are provided.

[0028] The cover plate can be made of metal, and its size matches the placement slot to ensure complete coverage of the gaps between the support frames. The fixing rods can be cylindrical or square, with a diameter slightly smaller than the fixing hole diameter for easy insertion. By installing the cover plate on the support frame, it effectively prevents raw materials from entering the heating coil gaps and causing blockages. The fixing rods mate with the fixing holes of the edge frames, ensuring the cover plate remains stable during raw material transportation, while also confining the edge frames at the front and rear ends of the support frame to form a unified structure. This structure fully utilizes the excess steam heat energy of the waste heat boiler, and reduces heat loss through the insulation effect of the cover plate, thereby reducing the energy consumption for raw material preheating.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A raw material warming bed device, characterized in that: The system includes a serpentine heating coil (2) laid on the raw material ground (1), with several support frames (3) without dead angles supporting the gaps inside the serpentine heating coil (2), and edge frames (7) covering the bends (201) of the serpentine heating coil (2) at the front and rear ends of the support frames (3). The outermost support frame (3) of the serpentine heating coil (2) is connected to an oblique support (6).

2. The raw material warming bed device according to claim 1, characterized in that: The support frame (3) is located in the gap between the adjacent straight tubes of the serpentine heating coil (2). The cross section of the support frame (3) is an inverted trapezoidal structure that is easy to place, and arc-shaped surfaces (4) that fit with the straight tubes of the serpentine heating coil (2) are provided on both sides. The support frame (3) has through holes (5) inside.

3. The raw material warming bed device according to claim 1, characterized in that: The edge frame (7) has several insertion holes (8) for inserting elbows (201) on one end face. The outer side of the edge frame (7) is inclined downward. One of the edge frames (7) has a through hole for passing through the inlet and outlet of the serpentine heating coil (2).

4. The raw material warming bed device according to claim 3, characterized in that: The upper part of the edge frame (7) and the upper part of the inclined support (6) are provided with a sunken placement groove (9), the bottom of which is flush with the top of the support frame (3).

5. The raw material warming bed device according to claim 4, characterized in that: A cover plate (10) is placed on the upper part of several of the support frames (3) and is located in the placement groove (9). The front and rear ends of the cover plate (10) are provided with a plurality of fixing rods (11) that can be inserted into the edge frame (7) with fixing holes (701).

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