Flue gas waste heat recycling device of sintering machine

Abstract

The utility model discloses a sintering machine flue gas waste heat recycling device which comprises a shell, an exhaust assembly and an electric push rod are arranged on the top of the shell, an air inlet is formed in the bottom of the shell, a heat exchange assembly is further arranged in the shell, and an air inlet assembly is arranged in the air inlet; a movable rod of the electric push rod is fixedly connected with a rack, and the rack is driven to move through movement of the movable rod; the exhaust assembly comprises an exhaust port, and a plurality of movable plates are arranged in the exhaust port; the two ends of the movable plate are rotationally connected with the interior of the exhaust port through rotating shafts correspondingly, the rotating shaft at one end penetrates out of the exhaust port, and a gear is fixedly connected to the tail end of the rotating shaft and engaged with the rack. Waste heat in flue gas is utilized, the energy use efficiency is improved, the overall structure is compact and reasonable, automatic control over the opening and closing states of the exhaust port is achieved through the electric push rod and a gear and rack mechanism, work efficiency is improved, and daily maintenance and troubleshooting are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste heat recovery and utilization, in particular to a sintering machine fume waste heat recovery and utilization device. Background Art

[0002] Exhaust sintering is an important link in large-scale ferrous metallurgical sintering operations. It uses a sintering machine to sinter concentrate powder and rich ore powder of different compositions and particle sizes into blocks, and partially eliminate harmful impurities such as sulfur and phosphorus contained in the ore. In this process, a large amount of high-temperature flue gas is also generated, which can be reused through the supporting recovery device.

[0003] Many existing waste heat recovery and utilization devices allow flue gas to enter the recovery device directly from the inlet and then be discharged directly from the outlet. The waste heat of the flue gas stays in the device for a short time, which does not maximize the utilization of waste heat, resulting in incomplete heat recovery. A large amount of waste heat will still enter the outside air, causing the air temperature around the device to rise, affecting the work of the staff. Utility Model Content

[0004] Aiming at the problem that the waste heat of burning operations is not fully utilized and is wasted, the utility model provides a sintering machine flue gas waste heat recovery and utilization device which can more fully recover and utilize the waste heat and avoid waste.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A sintering machine flue gas waste heat recovery and utilization device comprises a shell, an exhaust assembly and an electric push rod are provided on the top of the shell, an air inlet is provided at the bottom, and a heat exchange assembly is also provided inside, wherein an air inlet assembly is provided in the air inlet; the moving rod of the electric push rod is fixedly connected to a rack, and the rack is driven to move by the movement of the moving rod; the exhaust assembly comprises an exhaust port, and a plurality of movable plates are provided inside the exhaust port; the two ends of the movable plate are respectively connected to the inside of the exhaust port through a rotating shaft, and the rotating shaft at one end passes through the exhaust port, and a gear is fixedly connected to the end of the rotating shaft, and the gear is meshed with the rack.

[0007] Furthermore, a protective shell is fixedly connected to the back of the exhaust port, and the protective shell covers the outer side of the rack and gear meshing mechanism. The protective shell can protect the meshing mechanism and ensure its normal use.

[0008] Furthermore, the heat exchange component is a water pipe, with a water inlet fixedly connected at its lower end and a water outlet fixedly connected at its upper end; the water inlet and outlet each extend outward through the housing. During use, the water inlet and outlet are each connected to the factory's circulating water pipeline, facilitating water entry into the housing for heat exchange. The overall structure is simple and effective.

[0009] Furthermore, the left end surface of the water outlet is rotatably connected to a rotating rod, and the right end of the rotating rod is fixedly connected to a blocking disc. Furthermore, during heat exchange, a blocking disc can be further provided. Specifically, the rotating rod is controlled to drive the blocking disc to rotate until the blocking disc completely blocks the water outlet. At this point, water is allowed to flow into the water pipe. Simultaneously, the blocking of the blocking disc fills the water pipe with water, allowing the water to be better heated by utilizing waste heat. By providing the rotating rod and the blocking disc in conjunction, the water flow can be retained within the water pipe during the heat exchange process, thereby extending the heat exchange time and achieving a better heat exchange effect.

[0010] Furthermore, the air intake assembly includes a fixed frame fixedly connected to the inner wall of the air inlet; a cross-fixing frame fixedly connected to the top of the fixed frame, and a motor fixedly connected to the top of the cross-fixing frame; and fan blades fixedly connected to the output end of the motor. During use, the motor is controlled to start, and the output end of the motor drives the fan blades to rotate, drawing smoke into the housing. The coordination of the motor and the fan blades significantly enhances the smoke intake capacity, ensuring more efficient heat exchange efficiency. The forced gas flow promotes the contact area and time between the smoke and the heat exchange medium, and also enhances the overall heat transfer performance. At the same time, it enhances the adaptability of the device, ensuring stable working performance under different pressure conditions or ambient temperatures, and broadens the application range of the equipment.

[0011] Furthermore, the housing has fixed legs fixedly connected to both left and right sides of the bottom, and a slot is provided at the top, into which a rack is slidably mounted. The fixed legs facilitate support for the device, and the rack is slidably mounted within the slot, effectively preventing deviations in the rack's movement path and facilitating its use with the gear.

[0012] How it works:

[0013] In the normal state, the exhaust assembly on the top of the shell is open. At this time, the movable plate inside the exhaust port is tilted, and the movable end of the electric push rod remains extended. When heat exchange is used, the heat exchange assembly is connected to the factory's circulating water pipeline, and then water is passed into the heat exchange assembly. Then, the electric push rod is controlled to retract the movable rod. During the movement of the movable rod, the rack is driven to move. Through the engagement of the rack and the gear, the gear drives the rotating shaft to rotate, realizing the rotation of the movable plate. When the electric push rod retracts the movable rod to its original position, the movable plate rotates to a horizontal position. At this time, the exhaust port is closed, and then the air intake assembly is controlled to open, so that the flue gas is sucked into the shell and retained. At this time, the heat exchange assembly exchanges heat with the flue gas, heating the water inside the heat exchange assembly, thereby realizing heat exchange. The flue gas is retained in the shell, extending the retention time, and heat exchange is achieved through the water circulation into the heat exchange assembly, which can effectively utilize the waste heat of the flue gas. When use is completed, the exhaust port can be opened by controlling the electric push rod to control the tilt of the movable plate, and then the flue gas that has completed waste heat utilization can be discharged, which is easy to operate.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0015] 1. This utility model significantly improves energy utilization efficiency by effectively capturing and utilizing waste heat in flue gas, reduces dependence on traditional energy, helps save costs and reduce greenhouse gas emissions, and meets the requirements of green and sustainable development; the overall structure is compact and reasonable, integrating exhaust, air intake and heat exchange functions in one, and adopts electric push rods and gear rack mechanisms to realize automatic control of the opening and closing status of the exhaust port, which not only improves work efficiency, but also facilitates daily maintenance and troubleshooting; by closing the exhaust port, the flue gas residence time is extended, the heat exchange effect is enhanced, and it is ensured that the heat is fully absorbed and utilized. The device is suitable for a variety of industrial scenarios that generate high-temperature exhaust gas, and has demonstrated obvious advantages in improving resource utilization and promoting energy conservation and emission reduction.

[0016] 2. The protective shell of the utility model can protect the meshing mechanism; by setting a rotating rod and cooperating with the blocking disc, the water flow can be retained inside the water pipe during the heat exchange process, thereby extending the heat exchange time and achieving a better heat exchange effect; through the cooperation of the motor and the fan blades, the flue gas suction capacity is significantly enhanced, ensuring a more efficient heat exchange efficiency, the forced gas flow promotes the contact area and time between the flue gas and the heat exchange medium, and also enhances the overall heat transfer performance; the fixed legs are convenient for the device to support, and the rack is slidably installed in the slide groove, which can effectively avoid the deviation of the rack movement path, and is convenient for use with the gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 This is a schematic diagram of the exhaust assembly structure of the utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of the exhaust component of the present utility model.

[0020] Figure 4 It is a schematic diagram of the overall internal structure of the utility model.

[0021] Figure 5 For this utility model Figure 4 Schematic diagram of the enlarged structure of A in the figure.

[0022] Figure 6 This is a schematic diagram of the structure of the air intake assembly of the utility model.

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] 1. Housing; 11. Exhaust assembly; 111. Exhaust port; 112. Movable plate; 113. Gear; 114. Rack; 115. Electric push rod; 116. Protective shell; 12. Heat exchange assembly; 121. Water pipe; 122. Water inlet; 123. Water outlet; 124. Rotating rod; 125. Blocking disc; 13. Air intake assembly; 131. Air inlet; 132. Fixed frame; 133. Cross fixing frame; 134. Motor; 135. Fan blade; 14. Fixed leg. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Example 1: A sintering machine flue gas waste heat recovery and utilization device includes a shell 1, an exhaust component 11 and an electric push rod 115 are provided on the top of the shell 1, an air inlet 131 is provided at the bottom, and a heat exchange component 12 is also provided inside, wherein the air inlet 131 is provided with an air inlet component 13; the moving rod of the electric push rod 115 is fixedly connected to the rack 114, and the rack 114 is driven to move by the movement of the moving rod; the exhaust component 11 includes an exhaust port 111, and a plurality of movable plates 112 are provided inside the exhaust port 111; the two ends of the movable plate 112 are respectively connected to the exhaust port 111 through a rotating shaft, and the rotating shaft at one end passes through the exhaust port 111, and a gear 113 is fixedly connected to the end of the rotating shaft, and the gear 113 is meshed with the rack 114.

[0027] In the normal state, the exhaust assembly 11 on the top of the shell 1 is open. At this time, the movable plate 112 inside the exhaust port 111 is tilted, and the movable end of the electric push rod 115 remains extended. When heat exchange is used, the heat exchange assembly 12 is connected to the circulating water pipeline of the factory, and then water is passed into the heat exchange assembly. Then, the electric push rod 115 is controlled to retract the moving rod. During the movement of the moving rod, the rack 114 is driven to move. Through the meshing of the rack 114 and the gear 113, the gear 113 drives the shaft to rotate, thereby realizing the rotation of the movable plate 112. When the electric push rod 115 retracts the moving rod to its original position, the movable plate 11 2 is rotated to a horizontal position, at which time the exhaust port 111 is closed, and then the air intake assembly 13 is controlled to open, so that the smoke is sucked into the interior of the housing 1 for retention. At this time, the heat exchange assembly 12 exchanges heat with the smoke, heating the water inside the heat exchange assembly 12, thereby realizing heat exchange, and the smoke is retained in the housing 1, extending the retention time. The water circulates into the heat exchange assembly 12 to realize heat exchange, which can effectively utilize the waste heat of the smoke. When use is completed, the exhaust port 111 can be opened by controlling the electric push rod 115 to control the tilt of the movable plate 112, thereby discharging the smoke whose waste heat has been utilized, which is convenient to operate.

[0028] Example 2: The difference from Example 1 is that a protective shell 116 is fixedly connected to the back of the exhaust port 111, and the protective shell 116 covers the outside of the meshing mechanism of the rack 114 and the gear 113. The protective shell 116 can protect the meshing mechanism and ensure its normal use.

[0029] The heat exchange assembly 12 is a water pipe 121, with a water inlet 122 fixedly connected at its lower end and a water outlet 123 fixedly connected at its upper end. The water inlet 122 and water outlet 123 each extend outward through the housing 1. During use, the water inlet 122 and water outlet 123 are connected to the factory's circulating water pipeline, facilitating water entry into the housing 1 for heat exchange. The overall structure is simple and effective.

[0030] The housing 1 is fixedly connected to fixed legs 14 on both sides of the bottom, and a slot is provided on the top, in which a rack 114 is slidably mounted. The fixed legs 14 facilitate support for the device, and the rack 114 is slidably mounted in the slot, which effectively prevents deviation in the movement path of the rack 114 and facilitates its use in conjunction with the gear 113.

[0031] Example 3: The difference from Example 2 is that the left end surface of the water outlet 123 is rotatably connected to a rotating rod 124, and the right end of the rotating rod 124 is fixedly connected to a blocking disc 125. Furthermore, during heat exchange, a blocking disc 125 can also be provided. Specifically, the rotating rod 124 is controlled to drive the blocking disc 125 to rotate until the blocking disc 125 completely blocks the water outlet 123. At this time, water is allowed to flow into the water pipe 121. At the same time, the blocking of the blocking disc 125 fills the water pipe 121 with water, which allows the water to be better heated by utilizing waste heat. By providing the rotating rod 124 in conjunction with the blocking disc 125, the water flow can be retained inside the water pipe during the heat exchange process, thereby extending the heat exchange time and achieving a better heat exchange effect.

[0032] The air intake assembly 13 includes a fixed frame 132, which is fixedly connected to the inner wall of the air inlet 131; a cross-fixing frame 133 is fixedly connected to the top of the fixed frame 132, and a motor 134 is fixedly connected to the top of the cross-fixing frame 133; and a fan blade 135 is fixedly connected to the output end of the motor 134. During use, the motor 134 is controlled to start, and the output end of the motor 134 drives the fan blade 135 to rotate, sucking the smoke into the housing 1; the coordination between the motor 134 and the fan blade 135 significantly enhances the smoke intake capacity, ensuring more efficient heat exchange efficiency. The forced gas flow promotes the contact area and time between the smoke and the heat exchange medium, and also enhances the overall heat transfer performance. At the same time, it enhances the adaptability of the device, ensuring stable working performance under different pressure conditions or ambient temperatures, and broadening the application range of the equipment.

[0033] In the specification of the present invention, a large number of specific details are described. However, it is understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A sintering machine flue gas waste heat recovery device, characterized by: The invention comprises a housing (1), wherein the top of the housing (1) is provided with an exhaust assembly (11) and an electric push rod (115), the bottom is an air inlet (131), and a heat exchange assembly (12) is further provided inside, wherein the air inlet (131) is provided with an air inlet assembly (13); the moving rod of the electric push rod (115) is fixedly connected to a rack (114), and the rack (114) is driven to move by the movement of the moving rod; the exhaust assembly (11) comprises an exhaust port (111), and a plurality of movable plates (112) are provided inside the exhaust port (111); the two ends of the movable plates (112) are respectively connected to the inside of the exhaust port (111) through a rotating shaft, wherein the rotating shaft at one end passes through the exhaust port (111), and a gear (113) is fixedly connected to the end of the rotating shaft, and the gear (113) is meshed with the rack (114).

2. The sintering machine flue gas waste heat recovery device according to claim 1, characterized in that: The back of the exhaust port (111) is fixedly connected to a protective shell (116), and the protective shell (116) covers the outside of the meshing mechanism of the rack (114) and the gear (113).

3. A sintering machine flue gas waste heat recovery device according to any one of claims 1-2, characterized in that: The heat exchange component (12) is a water pipe (121), the lower end of the water pipe (121) is fixedly connected to a water inlet (122), and the upper end of the water pipe (121) is fixedly connected to a water outlet (123); the water inlet (122) and the water outlet (123) respectively pass through the outer shell (1) and extend outward.

4. The sintering machine flue gas waste heat recovery device according to claim 3, characterized in that: The left end surface of the water outlet (123) is rotatably connected to a rotating rod (124), and the right end of the rotating rod (124) is fixedly connected to a blocking disc (125).

5. The sintering machine flue gas waste heat recovery device according to claim 1, characterized in that: The air intake assembly (13) comprises a fixed frame (132), the fixed frame (132) being fixedly connected to the inner wall of the air intake (131); a cross fixing frame (133) being fixedly connected to the top of the fixed frame (132), a motor (134) being fixedly connected to the top of the cross fixing frame (133); and a fan blade (135) being fixedly connected to the bottom output end of the motor (134).

6. The sintering machine flue gas waste heat recovery device according to claim 1, characterized in that: The left and right sides of the bottom of the housing (1) are fixedly connected to fixed legs (14), and a sliding groove is provided on the top, in which a rack (114) is slidably installed.

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