Combustion apparatus for alternative fuels

Abstract

The utility model discloses a kind of combustion devices of alternative fuel, it is related to cement production technical field, including preheating furnace, the left and right sides of the preheating furnace are fixedly connected with gas pipe, one end of the gas pipe is communicated with combustion box, the bottom of preheating furnace inner wall is slidably connected with placing frame, the both sides in placing frame inside are all set with connecting groove, the inside of connecting groove is slidably connected with connecting plate.The utility model is placed after alternative fuel, pushing placing frame enters preheating furnace by moving block and moving groove cooperation, the abutting block of air-permeable plate and L-shaped connecting strip continuously abut and are extruded, air-permeable plate is driven to descend and compresses compression spring, when connecting strip moves to the gap of abutting block, compression spring pushes air-permeable plate reset to form slight vibration, scatter fuel to avoid accumulation dense, cooperate with the air input of air inlet and hot air duct, and then make alternative fuel when preheating, its surface and internal temperature are consistent.

Description

Technical Field

[0001] This utility model relates to the field of cement production technology, and in particular to a combustion device for alternative fuels. Background Technology

[0002] With increasingly stringent environmental protection requirements and the growing scarcity of fossil fuels, alternative fuels, such as RDF (waste-derived fuel), biomass, waste plastics, and waste tires, are gaining wider application in fields like cement kiln co-processing and industrial boilers due to their dual advantages of resource recycling and energy conservation and emission reduction. However, the complex and diverse sources of raw materials for alternative fuels lead to numerous technical bottlenecks during combustion, severely restricting the improvement of their energy utilization efficiency.

[0003] Existing alternative fuels often exhibit a dense internal and loose external distribution when stacked due to uneven particle size and shape. Traditional preheating devices mostly use static preheating methods, making it difficult for hot air to penetrate the dense fuel stack, resulting in a significant difference in preheating temperature between the fuel surface and the interior. Utility Model Content

[0004] In order to improve the problem that traditional preheating devices often use static preheating methods, which make it difficult for hot air to penetrate the dense fuel deposit layer, resulting in a significant difference in preheating temperature between the fuel surface and the interior, this utility model provides a combustion device for alternative fuels.

[0005] This utility model provides a combustion device for alternative fuels, which adopts the following technical solution:

[0006] A combustion device for alternative fuel includes a preheating furnace. Gas supply pipes are fixedly connected to both the left and right sides of the preheating furnace. One end of each gas supply pipe is connected to a combustion chamber. A placement frame is slidably connected to the bottom of the inner wall of the preheating furnace. Connecting grooves are provided on both sides inside the placement frame. Connecting plates are slidably connected inside the connecting grooves. A permeable plate for holding alternative fuel is fixedly connected to one side of each of the two connecting plates. Connecting strips are fixedly connected to both the front and rear sides of the inner wall of the preheating furnace.

[0007] Optionally, in the above-mentioned alternative fuel combustion device, a compression spring is fixedly connected to the bottom of the vent plate, the bottom end of the compression spring is fixedly connected to the bottom of the inner wall of the connecting groove, and an abutment block is fixedly connected to the top of the vent plate.

[0008] The above technical solution facilitates the movement of the pressure spring up and down through elastic deformation, which, together with the contact block, creates a slight vibration on the alternative fuel, promoting uniform fuel distribution and full contact with oxygen.

[0009] Optionally, in the above-mentioned alternative fuel combustion device, the number of the contact blocks is several, and the several contact blocks are fixedly connected to the front and rear sides of the top of the vent plate at equal distances in a straight line. The shape of the connecting strip is L-shaped, and the bottom of the vertical strip of the L-shaped connecting strip and the top of the contact block are rounded. The bottom of the vertical strip of the L-shaped connecting strip abuts against the top of the contact block.

[0010] The above technical solution facilitates stable contact between several contact blocks and the bottom of the vertical strip of the L-shaped connecting strip. The rounded corner design reduces friction, making the movement of the breathable plate smoother and improving the stability of the structural fit.

[0011] Optionally, in the above-mentioned alternative fuel combustion device, two T-shaped grooves are opened on the right side of the top of the vent plate, two T-shaped strips are slidably connected to the side of the inner wall of the T-shaped grooves, a fixing plate is fixedly connected to the right side of the T-shaped strips, a collection frame is fixedly connected to the right side of the fixing plate, a support frame is fixedly connected to the right side of the bottom of the vent plate, and the collection frame is placed inside the support frame.

[0012] The above technical solution facilitates the sliding of the T-shaped strip within the T-shaped groove, enabling rapid installation and disassembly of the collection frame. The support frame provides stable support for the collection frame, making it convenient to collect the preheated alternative fuel.

[0013] Optionally, in the combustion device for the alternative fuel mentioned above, the top of the preheating furnace is provided with three air inlets, and each of the three air inlets is fixedly connected to three hot air pipes.

[0014] The above technical solution facilitates the stable delivery of air into the preheating furnace through the air inlet by the three hot air ducts.

[0015] Optionally, in the above-mentioned alternative fuel combustion device, there are two connecting strips, and an L-shaped scraper is fixedly connected to one side of the two connecting strips. The top of the L-shaped scraper is beveled, and the bottom of the horizontal plate of the L-shaped scraper slides in cooperation with the top of the air permeable plate.

[0016] The above technical solution facilitates the L-shaped scraper to scrape the alternative fuel on top of the air vent plate as it moves, allowing the preheated alternative fuel to move into the collection box.

[0017] Optionally, in the above-mentioned alternative fuel combustion device, two movable blocks are fixedly connected to the bottom of the placement frame, and two movable slots adapted to the movable blocks are opened at the bottom of the inner wall of the preheating furnace.

[0018] The above technical solution facilitates the sliding of the moving block within the moving slot, enabling the placement frame to smoothly enter and exit the preheating furnace, thereby improving the convenience and stability of placing and removing the placement frame.

[0019] In summary, this utility model has at least one of the following beneficial effects: After the alternative fuel is placed, the placement frame is pushed into the preheating furnace through the cooperation of the moving block and the moving groove. The contact block of the vent plate continuously contacts and is squeezed by the L-shaped connecting strip, which drives the vent plate to move down and compress the compression spring. When the connecting strip moves to the gap of the contact block, the compression spring pushes the vent plate to reset and form a slight vibration, which disperses the fuel and prevents it from accumulating and becoming dense. Combined with the air input from the air inlet and the hot air pipe, the surface temperature of the alternative fuel is made the same as the internal temperature during preheating.

[0020] Once the alternative fuel is preheated, pull the placement frame outwards. The moving block slides smoothly, causing the placement frame and the vent plate to move out synchronously. The stationary L-shaped scraper slides and engages with the top of the vent plate. Its angled design reduces friction. Under the obstruction and guidance of the scraper, the preheated fuel moves along the slope to the right side of the vent plate, slides into the collection frame through the fixing plate, and can be transported to the combustion chamber by removing the collection frame. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is an exploded view of the gas pipeline and preheating furnace of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the preheating furnace of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the placement frame of this utility model.

[0025] Figure 5 This is an exploded view of the placement frame and the breathable plate of this utility model.

[0026] In the diagram: 1. Preheating furnace; 101. Air inlet; 102. Hot air duct; 2. Gas delivery pipe; 3. Placement frame; 301. Moving block; 302. Moving groove; 4. Connecting groove; 5. Connecting plate; 6. Ventilation plate; 601. Compression spring; 602. Abutment block; 603. T-shaped groove; 604. T-shaped strip; 605. Fixing plate; 606. Collection frame; 607. Support frame; 7. Connecting strip; 701. L-shaped scraper. Detailed Implementation

[0027] The following is in conjunction with the appendix Figures 1-5 The present invention will be described in further detail below.

[0028] Please refer to the attached diagram in the instruction manual. Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 5An embodiment of this utility model provides a combustion device for alternative fuel, including a preheating furnace 1. Gas supply pipes 2 are fixedly connected to both the left and right sides of the preheating furnace 1. One end of the gas supply pipe 2 is connected to the combustion chamber. A placement frame 3 is slidably connected to the bottom of the inner wall of the preheating furnace 1. A connecting groove 4 is opened on both sides inside the placement frame 3. A connecting plate 5 is slidably connected inside the connecting groove 4. A permeable plate 6 for holding alternative fuel is fixedly connected to one side of the two connecting plates 5. Connecting strips 7 are fixedly connected to both the front and rear sides of the inner wall of the preheating furnace 1.

[0029] See the attached diagram in the instruction manual. Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 5 A compression spring 601 is fixedly connected to the bottom of the vent plate 6. The bottom end of the compression spring 601 is fixedly connected to the bottom of the inner wall of the connecting groove 4. An abutment block 602 is fixedly connected to the top of the vent plate 6. The compression spring 601 drives the vent plate 6 to move up and down through elastic deformation. Together with the abutment block 602, it achieves slight vibration of the alternative fuel, promoting uniform fuel distribution and full contact with oxygen.

[0030] See the attached diagram in the instruction manual. Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 5 There are several abutment blocks 602, which are fixedly connected to the front and rear sides of the top of the breathable plate 6 at equal distances in a straight line. The connecting strip 7 is L-shaped, and the bottom of the vertical strip of the L-shaped connecting strip 7 and the top of the abutment block 602 are rounded. The bottom of the vertical strip of the L-shaped connecting strip 7 abuts against the top of the abutment block 602. Several abutment blocks 602 and the bottom of the vertical strip of the L-shaped connecting strip 7 are stably in contact. The rounded corner design reduces friction, makes the breathable plate 6 move more smoothly, and improves the stability of the structure.

[0031] See the attached diagram in the instruction manual. Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 5 Two T-shaped grooves 603 are provided on the right side of the top of the ventilator 6. Two T-shaped strips 604 are slidably connected to the inner wall of the T-shaped grooves 603. A fixing plate 605 is fixedly connected to the right side of the T-shaped strips 604. A collection frame 606 is fixedly connected to the right side of the fixing plate 605. A support frame 607 is fixedly connected to the right side of the bottom of the ventilator 6. The collection frame 606 is placed inside the support frame 607. The T-shaped strips 604 slide in the T-shaped grooves 603 to realize the quick installation and removal of the collection frame 606. The support frame 607 provides stable support for the collection frame 606, which facilitates the collection of preheated alternative fuel.

[0032] See the attached diagram in the instruction manual. Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 5 The top of the preheating furnace 1 has three air inlets 101, and three hot air pipes 102 are fixedly connected inside each of the three air inlets 101. The three hot air pipes 102 can stably deliver air into the preheating furnace 1 through the air inlets 101.

[0033] See the attached diagram in the instruction manual. Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 5 There are two connecting strips 7. An L-shaped scraper 701 is fixedly connected to one side of the two connecting strips 7. The top of the L-shaped scraper 701 is beveled, and the bottom of the horizontal plate of the L-shaped scraper 701 slides with the top of the ventilator 6. When the ventilator 6 moves, the L-shaped scraper 701 scrapes the alternative fuel on its top, so that the preheated alternative fuel can move into the inside of the collection frame 606.

[0034] See the attached diagram in the instruction manual. Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 5 The bottom of the placement frame 3 is fixedly connected to two moving blocks 301. The bottom of the inner wall of the preheating furnace 1 has two moving grooves 302 that are adapted to the moving blocks 301. The moving blocks 301 slide in the moving grooves 302, which drives the placement frame 3 to smoothly enter and exit the preheating furnace 1, improving the convenience and stability of the placement frame 3.

[0035] Working principle: When using this alternative fuel combustion device, after placing the alternative fuel, the fuel-bearing placement frame 3 is pushed into the preheating furnace 1 through the cooperation of the moving block 301 and the moving groove 302. The contact block 602 at the top of the vent plate 6 will continuously contact the bottom of the vertical strip of the L-shaped connecting strip 7 fixed to the inner wall of the preheating furnace 1. Because the contact part between the contact block 602 and the connecting strip 7 is designed with rounded corners, the contact block 602 will be continuously squeezed by the connecting strip 7 during the movement of the placement frame 3, thereby driving the vent plate 6 to move downwards and compressing the compression spring 601 at the bottom. When the connecting strip 7 moves to the gap between several contact blocks 602, the compression spring 601 will push the vent plate 6 to quickly return to its original position through elastic deformation, forming a slight up-and-down vibration of the vent plate 6. This vibration effect can effectively disperse the alternative fuel placed on the vent plate 6, preventing the fuel from becoming dense due to accumulation. At the same time, in conjunction with the air supplied from the top of the preheating furnace 1 through the air inlet 101 and the hot air pipe 102, the loose fuel can fully contact the hot air, ensuring that the surface and interior of the fuel can achieve a consistent preheating effect, avoiding insufficient local preheating that affects subsequent combustion efficiency.

[0036] After the alternative fuel is preheated in the preheating furnace 1, the operator only needs to pull out the placement frame 3. The smooth sliding of the moving block 301 in the moving groove 302 can drive the placement frame 3 and the internal venting plate 6 to move outward synchronously. At this time, the L-shaped scraper 701 fixed on the opposite side of the two connecting strips 7 is in a stationary state, and its bottom is in sliding contact with the top of the venting plate 6. The angled design of the top of the L-shaped scraper 701 can reduce the frictional resistance with the fuel. As the venting plate 6 moves, its After the surface is preheated, the fuel will move relative to the side of the L-shaped scraper 701. Under the blocking and guiding effect of the L-shaped scraper 701, the fuel will gradually move along the slope of the scraper to the right side of the vent plate 6 and slide into the collection frame 606 through the top of the fixing plate 605. The collection frame 606 is slidably connected to the T-shaped groove 603 of the vent plate 6 through the T-shaped strip 604 and is stably supported by the support frame 607. The operator can directly remove the collection frame 606 to transport the preheated fuel to the combustion chamber.

[0037] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A combustion device for alternative fuels, comprising a preheating furnace (1), characterized in that: Gas supply pipes (2) are fixedly connected to both the left and right sides of the preheating furnace (1). One end of the gas supply pipe (2) is connected to the combustion box. A placement frame (3) is slidably connected to the bottom of the inner wall of the preheating furnace (1). A connecting groove (4) is opened on both sides inside the placement frame (3). A connecting plate (5) is slidably connected inside the connecting groove (4). A permeable plate (6) for holding alternative fuel is fixedly connected to one side of the two connecting plates (5). A connecting strip (7) is fixedly connected to both the front and rear sides of the inner wall of the preheating furnace (1).

2. The combustion device for alternative fuels according to claim 1, characterized in that: A compression spring (601) is fixedly connected to the bottom of the breathable plate (6), and the bottom end of the compression spring (601) is fixedly connected to the bottom of the inner wall of the connecting groove (4). An abutment block (602) is fixedly connected to the top of the breathable plate (6).

3. The combustion device for alternative fuels according to claim 2, characterized in that: The number of the abutment blocks (602) is several. The several abutment blocks (602) are fixedly connected to the front and rear sides of the top of the breathable plate (6) in a straight line at equal distances. The shape of the connecting strip (7) is L-shaped, and the bottom of the vertical strip of the L-shaped connecting strip (7) and the top of the abutment block (602) are rounded. The bottom of the vertical strip of the L-shaped connecting strip (7) abuts against the top of the abutment block (602).

4. The combustion device for alternative fuels according to claim 3, characterized in that: Two T-shaped grooves (603) are provided on the right side of the top of the breathable plate (6). Two T-shaped strips (604) are slidably connected to the side of the inner wall of the T-shaped grooves (603). A fixing plate (605) is fixedly connected to the right side of the T-shaped strips (604). A collection frame (606) is fixedly connected to the right side of the fixing plate (605). A support frame (607) is fixedly connected to the right side of the bottom of the breathable plate (6). The collection frame (606) is placed inside the support frame (607).

5. The combustion device for alternative fuels according to claim 1, characterized in that: The preheating furnace (1) has three air inlets (101) on its top, and three hot air pipes (102) are fixedly connected inside each of the three air inlets (101).

6. The combustion device for alternative fuels according to claim 1, characterized in that: There are two connecting strips (7). An L-shaped scraper (701) is fixedly connected to one side of the two connecting strips (7). The top of the L-shaped scraper (701) is beveled, and the bottom of the horizontal plate of the L-shaped scraper (701) slides with the top of the breathable plate (6).

7. The combustion device for alternative fuels according to claim 1, characterized in that: The bottom of the placement frame (3) is fixedly connected to two moving blocks (301), and the bottom of the inner wall of the preheating furnace (1) has two moving slots (302) that are adapted to the moving blocks (301).

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