A waste heat recovery device for a sintering apparatus

Abstract

This utility model relates to the field of waste heat recovery in sintering equipment, specifically a waste heat recovery device for sintering equipment. It includes a sintering equipment body, a waste gas recovery mechanism on one side of the sintering equipment body, and a cylinder. The cylinder is located on one side of the sintering equipment body, and a first exhaust pipe is fixedly connected to one side of the sintering equipment body. One end of the first exhaust pipe extends through the inner wall of the cylinder. A second exhaust pipe is fixedly connected to one side of the cylinder. A piston block is slidably connected to the inner wall of the cylinder, and a piston rod is fixedly connected to the top of the piston block. A spring is fitted onto the surface of the piston rod. A transmission rod is provided at one end of the agitator. This utility model, by setting up a waste gas recovery mechanism, utilizes the pressure energy and heat energy in the waste gas to convert them into mechanical power to drive the agitator, thus reducing the demand for traditional electrical energy.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery in sintering equipment, specifically a waste heat recovery device for sintering equipment. Background Technology

[0002] Sintering equipment is a specialized industrial device used to heat a mixture of various powdered or granular materials, such as iron ore powder and other iron-containing raw materials, with fuel at high temperatures to near their melting point but without completely melting them. During the sintering process, diffusion and bonding occur between the material particles, forming a dense body or porous structure with specific mechanical strength, porosity, or functional properties. This type of equipment is widely used in metallurgy, ceramics, powder metallurgy, electronic materials, and additive manufacturing.

[0003] In the traditional model, sintering exhaust gas is only sent to the purification system as a pollutant and then discharged. The heat and pressure energy it carries are not utilized, which is a one-way treatment rather than an energy cycle. Before sintering, multiple raw materials need to be mixed. The raw material mixing device usually relies on motor drive, which requires additional power consumption, resulting in a double waste of idle exhaust gas energy and external energy input. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, in the traditional model, sintering exhaust gas is only sent to the purification system as a pollutant for treatment before being discharged. The heat and pressure energy it carries are not utilized, which is a one-way treatment rather than an energy cycle. Before sintering, multiple raw materials need to be mixed. The raw material mixing device usually relies on motor drive, which requires additional electrical energy. This results in a double waste problem of idle exhaust gas energy and external energy input. This utility model proposes a waste heat recovery device for sintering equipment.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a waste heat recovery device for sintering equipment, including a sintering device body, a mixing tank fixedly connected to the top of the sintering device body, a stirrer rotatably connected to the inner wall of the mixing tank, and a waste gas recovery mechanism provided on one side of the sintering device body.

[0006] The waste gas recovery mechanism includes a cylinder, which is disposed on one side of the sintering device body. A first exhaust pipe is fixedly connected to one side of the sintering device body, and one end of the first exhaust pipe extends through the inner wall of the cylinder. A second exhaust pipe is fixedly connected to one side of the cylinder. A piston block is slidably connected to the inner wall of the cylinder. A piston rod is fixedly connected to the top of the piston block. One end of the piston rod extends through the inner wall of the cylinder and outwards. A spring is sleeved on the surface of the piston rod. One end of the spring is fixedly connected to the top of the piston block, and the other end of the spring is fixedly connected to the inner wall of the cylinder. A transmission rod is provided at one end of the agitator, and the transmission rod is used in conjunction with the piston rod.

[0007] Preferably, one end of the transmission rod is fixedly connected to a turntable, one side of the turntable is fixedly connected to a fixed shaft, and the surface of the fixed shaft is fixedly connected to a first connecting rod.

[0008] Preferably, a second connecting rod is provided on one side of the first connecting rod, and both ends of the second connecting rod are rotatably connected to a rotating shaft. One end of the second connecting rod is rotatably connected to one end of the first connecting rod through the rotating shaft, and the other end of the second connecting rod is rotatably connected to one end of the piston rod through the rotating shaft.

[0009] Preferably, a support block is fixedly connected to the top of the sintering device body, and there are two support blocks. The transmission rod and the stirrer both penetrate into the inner wall of the two support blocks.

[0010] Preferably, the inner walls of both support blocks are fixedly connected with bearings, and the inner rings of the two bearings are fixedly connected to the surfaces of the transmission rod and the agitator, respectively.

[0011] Preferably, the transmission rod is threadedly connected to the inner wall of the agitator with a second bolt, and there are four second bolts. One end of each of the four second bolts is threadedly connected with a nut, and the transmission rod and the agitator are fixedly connected by the second bolts and nuts.

[0012] Preferably, a fixing frame is fixedly connected to one side of the sintering device body, the inner wall of the fixing frame is fixedly connected to the surface of the cylinder, and the cylinder is fixedly connected to one side of the sintering device body through the fixing frame.

[0013] The advantages of this utility model are:

[0014] This invention incorporates a waste gas recovery mechanism. High-temperature, high-pressure waste gas from the sintering device is introduced into the cylinder via a first exhaust pipe. The gas pressure pushes the piston block and piston rod upwards synchronously. The waste gas compresses the piston block, piston rod, and spring, pushing the piston rod outwards. The waste gas is then discharged through a second exhaust pipe at the top of the cylinder. The discharged waste gas enters a purification system for treatment. When the pressure inside the cylinder is released, the internal return spring causes the piston block and piston rod to return to their initial position, forming a vertical reciprocating motion. A connecting component converts this vertical motion into lateral motion, driving a transmission rod to rotate. The rotating transmission rod then transmits power to the agitator, which in turn drives the agitator to mix various raw materials in the mixing tank. By utilizing the pressure and heat energy in the waste gas to drive the agitator, the demand for traditional electrical energy is reduced. This also avoids the waste caused by the direct emission of energy contained in the waste gas, transforming the previously energy-intensive mixing operation into a process of energy recycling. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or 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. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a partial structural schematic diagram of the present invention;

[0018] Figure 3 This is a partial structural schematic diagram of the waste gas recovery mechanism of this utility model;

[0019] Figure 4 This is a partial structural diagram of the bearing of this utility model.

[0020] In the diagram: 1. Sintering device body; 2. Waste gas recovery mechanism; 201. Cylinder; 202. First exhaust pipe; 203. Second exhaust pipe; 204. Piston block; 205. Piston rod; 206. Spring; 207. Transmission rod; 3. Mixing tank; 4. Agitator; 5. Turntable; 6. Support block; 7. Fixing frame; 8. First connecting rod; 9. Fixing shaft; 10. Second connecting rod; 11. Rotating shaft; 12. Nut; 13. Bearing; 14. Second bolt. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0023] This application discloses a waste heat recovery device for sintering equipment. (Refer to...) Figure 1 , Figure 2 and Figure 3 A waste heat recovery device for sintering equipment includes a sintering equipment body 1, a mixing tank 3 fixedly connected to the top of the sintering equipment body 1, an agitator 4 rotatably connected to the inner wall of the mixing tank 3, and a waste gas recovery mechanism 2 provided on one side of the sintering equipment body 1.

[0024] The waste gas recovery mechanism 2 includes a cylinder 201, which is located on one side of the sintering device body 1. A first exhaust pipe 202 is fixedly connected to one side of the sintering device body 1, with one end of the first exhaust pipe 202 penetrating through the inner wall of the cylinder 201. A second exhaust pipe 203 is fixedly connected to one side of the cylinder 201. A piston block 204 is slidably connected to the inner wall of the cylinder 201, and a piston rod 205 is fixedly connected to the top of the piston block 204. One end of the piston rod 205 penetrates through the inner wall of the cylinder 201 and extends to the outside. A spring 206 is sleeved on the surface of the piston rod 205, with one end of the spring 206 fixedly connected to the top of the piston block 204 and the other end fixedly connected to the inner wall of the cylinder 201. A transmission rod 207 is provided at one end of the stirrer 4, which works in conjunction with the piston rod 205. By setting up the waste gas recovery mechanism 2, the high temperature gas inside the sintering device body 1 is recovered through the first exhaust pipe 202. The compressed exhaust gas is introduced into the cylinder 201. The pressure of the exhaust gas pushes the piston block 204 and piston rod 205 to move upward synchronously. The exhaust gas compresses the piston block 204, piston rod 205 and spring 206, pushing the piston rod 205 outward. At this time, the exhaust gas is discharged through the second exhaust pipe 203 at the top of the cylinder 201. The discharged exhaust gas will enter the purification system for treatment. When the pressure in the cylinder 201 is released, the internal return spring 206 causes the piston block 204 and piston rod 205 to spring back to the initial position, forming a vertical reciprocating motion. Through the connecting component, the vertical motion can be converted into a horizontal motion, driving the transmission rod 207 to rotate. The rotating transmission rod 207 then transmits power to the agitator 4, thereby driving the agitator 4 to mix the various raw materials in the mixing tank 3. By utilizing the pressure energy and heat energy in the exhaust gas to convert into mechanical power to drive the agitator 4, the demand for traditional electrical energy is reduced.

[0025] Reference Figure 3 One end of the transmission rod 207 is fixedly connected to a turntable 5, and a fixed shaft 9 is fixedly connected to one side of the turntable 5. A first connecting rod 8 is fixedly connected to the surface of the fixed shaft 9. Through the arrangement of the turntable 5, the fixed shaft 9 and the first connecting rod 8, the turntable 5 serves as an intermediate transmission component, receiving the rotational power from the first connecting rod 8. The fixed shaft 9 enables the first connecting rod 8 to rotate around the fixed shaft 9. The turntable 5 can transmit the rotational force to the stirrer 4, thereby realizing the rotation of the stirrer 4 and ensuring the stability of the rotation of the stirrer 4.

[0026] Reference Figure 3A second link 10 is provided on one side of the first link 8. Both ends of the second link 10 are rotatably connected to a rotating shaft 11. One end of the second link 10 is rotatably connected to one end of the first link 8 through the rotating shaft 11, and the other end of the second link 10 is rotatably connected to one end of the piston rod 205 through the rotating shaft 11. With the arrangement of the second link 10 and the rotating shaft 11, the rotating shaft 11 serves as the intersection and connection point of the piston rod 205, the first link 8, and the second link 10, forming a multi-link linkage structure. When the piston rod 205 moves up and down reciprocally, it drives the rotating shaft 11 to move synchronously, thereby pushing the second link 10 to swing around the fulcrum of the other rotating shaft 11, converting linear motion into rotational motion.

[0027] Reference Figure 2 The top of the sintering device body 1 is fixedly connected to a support block 6. There are two support blocks 6. The transmission rod 207 and the stirrer 4 both penetrate into the inner wall of the two support blocks 6. By setting the support blocks 6, the transmission rod 207 and the stirrer 4 can be supported and limited, ensuring the stability of the transmission rod 207 and the stirrer 4 during operation and preventing deviation.

[0028] Reference Figure 4 The inner walls of the two support blocks 6 are fixedly connected with bearings 13. The inner rings of the two bearings 13 are fixedly connected to the surfaces of the transmission rod 207 and the stirrer 4, respectively. By setting the bearings 13, the friction and resistance when the transmission rod 207 and the stirrer 4 rotate can be reduced, so that the transmission rod 207 and the stirrer 4 rotate more smoothly and avoid jamming.

[0029] Reference Figure 4 The transmission rod 207 is threadedly connected to the inner wall of the stirrer 4 by a second bolt 14. There are four second bolts 14, and one end of each of the four second bolts 14 is threadedly connected to a nut 12. The transmission rod 207 and the stirrer 4 are fixedly connected by the second bolts 14 and the nuts 12. By setting the second bolts 14 and the nuts 12, the transmission rod 207 and the stirrer 4 are rigidly connected to prevent slippage at the connection and ensure the stability of the rotational force transmission.

[0030] Reference Figure 2 A fixing frame 7 is fixedly connected to one side of the sintering device body 1. The inner wall of the fixing frame 7 is fixedly connected to the surface of the cylinder 201. The cylinder 201 is fixedly connected to one side of the sintering device body 1 through the fixing frame 7. The fixing frame 7 can fix and support the cylinder 201, ensuring the stability of the cylinder 201 and preventing the cylinder 201 from displacing or vibrating during operation.

[0031] Working principle: The sintering device body 1 melts the surface of the mixed raw material powder particles by high-temperature heating, and diffusion bonding occurs under pressure or gravity to form a dense solid material. This is existing technology and will not be elaborated further. During the heating of the mixed raw materials, the sintering device body 1 generates high-temperature exhaust gas. This exhaust gas is guided to the bottom of the cylinder 201 through the first exhaust pipe 202 and enters the cylinder 201. As the exhaust gas continues to flow in, the gas pressure inside the cylinder 201 gradually increases, which then acts on the bottom of the piston block 204 inside the cylinder 201, generating an upward thrust. This pushes the piston block 204 and the connected piston rod 205 upwards. The piston rod 205 extends out of the cylinder 201. During the upward movement of the piston block 204, it compresses the spring 206 fitted on the surface of the piston rod 205, causing the spring 206 to deform and store elastic potential energy. When the piston block 204 rises to near the top of the cylinder 201 under the pressure of the exhaust gas, the outlet connecting the inside of the cylinder 201 to the second exhaust pipe 203 is exposed. The high-temperature exhaust gas is then discharged through the second exhaust pipe 203 and enters the subsequent exhaust gas purification system for treatment. As exhaust gas is discharged, the internal pressure of cylinder 201 gradually decreases. When the thrust is insufficient to overcome the restoring force of spring 206, spring 206 releases its previously stored elastic potential energy, pushing piston block 204 downwards, thereby causing piston rod 205 to move downwards synchronously, completing a reciprocating motion. Due to the continuous generation of exhaust gas during the sintering process, a stable up-and-down reciprocating motion is formed between piston block 204, piston rod 205, and spring 206. The reciprocating motion of piston rod 205 is transmitted to the second connecting rod 10 through rotating shaft 11, causing the second connecting rod 10 to swing around rotating shaft 11 as a fulcrum. The motion is then transmitted to the first connecting rod 8 via another rotating shaft 11, forming a linkage transmission. The motion of the first connecting rod 8 drives the fixed shaft 9 connected to it to generate a periodic rotation, thereby driving the turntable 5 connected to the fixed shaft 9 to rotate continuously. The rotational motion of the turntable 5 is transmitted to the transmission rod 207, which rotates synchronously. The connection between the transmission rod 207 and the agitator 4 is fixedly connected by the second bolt 14 and nut 12. Therefore, the agitator 4 also rotates together with the transmission rod 207, so that the various raw materials in the mixing tank 3 are fully stirred and mixed.

[0032] 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.

Claims

1. A waste heat recovery device for a sintering apparatus, comprising a sintering apparatus body (1), characterized by: The top of the sintering device body (1) is fixedly connected to a mixing tank (3), and the inner wall of the mixing tank (3) is rotatably connected to a stirrer (4). A waste gas recovery mechanism (2) is provided on one side of the sintering device body (1). The waste gas recovery mechanism (2) includes a cylinder (201), which is disposed on one side of the sintering device body (1). A first exhaust pipe (202) is fixedly connected to one side of the sintering device body (1). One end of the first exhaust pipe (202) extends through the inner wall of the cylinder (201). A second exhaust pipe (203) is fixedly connected to one side of the cylinder (201). A piston block (204) is slidably connected to the inner wall of the cylinder (201). The top of the piston block (204) is fixedly... A piston rod (205) is fixedly connected to the cylinder (201). One end of the piston rod (205) passes through the inner wall of the cylinder (201) and extends to the outside. A spring (206) is sleeved on the surface of the piston rod (205). One end of the spring (206) is fixedly connected to the top of the piston block (204), and the other end of the spring (206) is fixedly connected to the inner wall of the cylinder (201). A transmission rod (207) is provided at one end of the stirrer (4). The transmission rod (207) is used in conjunction with the piston rod (205).

2. The waste heat recovery device for a sintering apparatus according to claim 1, characterized by: One end of the transmission rod (207) is fixedly connected to a turntable (5), and a fixed shaft (9) is fixedly connected to one side of the turntable (5). A first connecting rod (8) is fixedly connected to the surface of the fixed shaft (9).

3. The waste heat recovery device for a sintering apparatus according to claim 2, characterized by: A second link (10) is provided on one side of the first link (8). Both ends of the second link (10) are rotatably connected to a rotating shaft (11). One end of the second link (10) is rotatably connected to one end of the first link (8) through the rotating shaft (11), and the other end of the second link (10) is rotatably connected to one end of the piston rod (205) through the rotating shaft (11).

4. The waste heat recovery device for a sintering apparatus according to claim 1, characterized by: The top of the sintering device body (1) is fixedly connected to a support block (6), and there are two support blocks (6). The transmission rod (207) and the stirrer (4) both penetrate into the inner wall of the two support blocks (6).

5. The waste heat recovery device for a sintering apparatus according to claim 4, characterized by: The inner walls of the two support blocks (6) are fixedly connected with bearings (13), and the inner rings of the two bearings (13) are fixedly connected to the surfaces of the transmission rod (207) and the stirrer (4), respectively.

6. The waste heat recovery device for a sintering apparatus according to claim 1, characterized by: The transmission rod (207) is threadedly connected to the inner wall of the stirrer (4) by a second bolt (14). There are four second bolts (14), and one end of each of the four second bolts (14) is threadedly connected to a nut (12). The transmission rod (207) and the stirrer (4) are fixedly connected by the second bolts (14) and the nuts (12).

7. The waste heat recovery device for a sintering apparatus according to claim 1, characterized by: A fixing frame (7) is fixedly connected to one side of the sintering device body (1). The inner wall of the fixing frame (7) is fixedly connected to the surface of the cylinder (201). The cylinder (201) is fixedly connected to one side of the sintering device body (1) through the fixing frame (7).

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