Cooling circulation device for hot gas in sintering furnace

Abstract

The utility model discloses a cooling circulation device for hot gas in a sintering furnace. The cooling circulation device comprises a mounting base and two cooling devices, the cooling device comprises a cooling pipe, a water communicating pipe arranged on the outer wall of the cooling pipe, two breather pipes arranged at the two ends of the cooling pipe respectively and a gas communicating pipe arranged on the breather pipes close to the water communicating pipe. Mounting racks are respectively arranged at the lower parts of two ends of the cooling device; two lifting rods are longitudinally connected to the mounting base in a sliding manner; and a plurality of rolling shafts are rotationally connected to the lifting rod. And moreover, the structure is compact, and the size is small. Cooling water enters from the upper end and flows out from the upper end, and the cooling water can be completely filled into the cooling pipe for heat exchange. And the rolling shaft with the height capable of being switched is arranged on the mounting base, the cooling device moves more flexibly, residual stress existing on the outwards-extending pipeline after locking is avoided, and the sealing effect of the connecting pipeline is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of sintering furnace equipment, and in particular relates to a cooling and circulation device for hot gas inside a sintering furnace. Background Technology

[0002] The hot gas-water cooling system of a sintering furnace not only affects production efficiency and product quality but also involves factors such as energy utilization and environmental protection. Through continuous design optimization and enhanced maintenance, the overall performance and socio-economic benefits of the sintering furnace can be effectively improved. Hot gas flows into the circulation device and is cooled by cooling water, facilitating reuse, improving post-sintering cooling efficiency, and saving costs associated with the cooling process. It can be used for cooling various materials after sintering.

[0003] Chinese patent document CN214095556U discloses a sintering furnace cooling device, including a hot gas main pipe, a hot gas pipe joint, hot gas branch pipes, a cold gas pipe joint, a cold gas main pipe, a water-cooled cylinder, a water pump, and a cooling pool. The hot gas main pipe carries a cooling medium gas carrying heat from the sintering furnace. The hot gas main pipe is connected to the hot gas branch pipes via a hot gas joint. The hot gas joint has several small circular connectors. The hot gas branch pipes are connected to the small circular connectors. The hot gas pipe joint is connected to the water-cooled cylinder, which is located inside the water-cooled cylinder. A cooling water outlet is located on one side of the bottom of the water-cooled cylinder. The cooling water outlet is connected to the cold water pool via a pipe. The top of the water-cooled cylinder is connected to the cold gas pipe joint. A cooling water inlet is located on one side of the bottom of the water-cooled cylinder. The cooling water outlet is connected to the water pump via a pipe. The water pump is connected to the cooling pool via a pipe.

[0004] In the aforementioned patented solution, the contact area between the hot gas distribution pipe and the cooling water inside the water-cooled cylinder directly determines the cooling efficiency. However, for sintering furnaces requiring high heat dissipation efficiency and volume, using this patented solution necessitates extending the length of the hot gas distribution pipe or increasing its number to achieve the required heat dissipation efficiency. In practical applications, extending or adding hot gas distribution pipes increases the overall volume of the cooling device, making installation and arrangement in the working environment inconvenient and raising the standards for construction and installation. Utility Model Content

[0005] To overcome the limitations of existing cooling devices in meeting the heat dissipation requirements of high-heat applications, and the fact that improving the heat dissipation efficiency of cooling devices increases their size, resulting in high requirements for operating environment and installation, this invention aims to provide a cooling circulation device for hot gases inside a sintering furnace. By horizontally and symmetrically arranging two cooling devices with interconnected water and gas channels, heat dissipation efficiency is improved while reducing overall size. Furthermore, a height-adjustable rolling shaft is provided below the mounting bracket of the cooling device to facilitate its sliding. When connecting the water and gas channels, the two cooling devices can move easily, avoiding stress on the connecting pipes that could lead to sealing failure after long-term use.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a cooling circulation device for hot gas inside a sintering furnace, comprising a mounting base disposed on a cooling platform and two cooling devices horizontally disposed on the mounting base; each cooling device includes a cooling pipe, a water connecting pipe disposed at one end of the outer wall of the cooling pipe, two vent pipes respectively disposed at both ends of the cooling pipe, and an air connecting pipe disposed near the water connecting pipe; the two water connecting pipes and the two air connecting pipes are respectively sealed and locked together by bolts; wherein, mounting frames are respectively disposed at the lower parts of both ends of the cooling device; two lifting rods are longitudinally slidably connected to the mounting base; the two lifting rods are respectively located at both ends of the cooling device; multiple rolling shafts are rotatably connected to the lifting rods; the rolling shafts can selectively abut against the lower end of the mounting frame.

[0007] A sealing gasket is also provided between the two water connecting pipes and the two air connecting pipes. In order to facilitate the placement of the sealing gasket, a certain gap is reserved during the placement process of the two cooling devices before installation. Therefore, the bolts will tighten the two cooling devices during the tightening process. Due to the friction between the mounting bracket and the mounting base, and the fact that the cooling device is only subjected to force at one end, residual stress will inevitably exist at the pipe interface. Over time, this will damage the sealing structure and reduce the durability of the seal.

[0008] The lifting rod, which can be height-switched, and the rolling shaft reduce friction for the movement of the cooling device, thereby reducing residual stress at the pipe interface and helping to maintain the sealing performance of the cooling device for a long time.

[0009] Furthermore, the lower end of the lifting rod is provided with multiple evenly distributed bottom shafts; two switching rods are horizontally slidably connected on the mounting base; multiple pads are evenly distributed on the upper end of the switching rods; the pads can selectively abut against the lower end of the bottom shafts.

[0010] When the bottom shaft abuts against the pad, the rolling shaft abuts against the lower end of the mounting bracket; when the bottom shaft does not abut against the pad, the rolling shaft does not contact the lower end of the mounting bracket, and the mounting bracket abuts against the upper end of the mounting base, thereby increasing the installation strength.

[0011] Specifically, the mounting base is threaded with two lead screws; the two lead screws abut against the ends of the two switching rods respectively.

[0012] Before installation, adjust the bottom shaft to abut against the pad, place the two cooling devices on the rolling shaft, and during the tightening of the screws, the rolling shaft reduces the moving resistance of the cooling devices; after installation, by tapping the switching rod or by using the lead screw, move the switching rod until the pad is no longer in contact with the bottom shaft, the lifting rod descends, and the cooling devices fall onto the mounting base, and finally the bolts are fixed.

[0013] Furthermore, plugs are provided at both ends of the cooling pipe to prevent the cooling pipe from communicating with the vent pipe; the cooling device includes a plurality of branch pipes arranged axially within the cooling pipe; both ends of the branch pipes are respectively connected to the adjacent vent pipes.

[0014] Furthermore, a water pipe interface is provided at the upper end of the cooling pipe away from the water connecting pipe; the water connecting pipe is horizontally arranged in the middle of the cooling pipe.

[0015] Specifically, an air pipe interface is provided on the vent pipe away from the water connecting pipe; an exhaust fan is provided at the end of one of the air pipe interfaces.

[0016] Specifically, thermocouple temperature measuring devices are respectively installed on the upper end of the two water pipe interfaces and on the air pipe interface near the exhaust fan.

[0017] Furthermore, a drain valve is provided at the lower end of the cooling pipe and the lower end of the vent pipe, respectively.

[0018] Furthermore, the upper end of the lifting rod is provided with multiple semi-tubes; the rolling shaft is coaxially disposed inside the semi-tubes.

[0019] Furthermore, the mounting bracket is provided with a plurality of evenly distributed oblong holes; the upper end of the mounting base is provided with a plurality of bolt holes; the bolt holes are directly opposite the oblong holes.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] 1. This utility model improves heat dissipation capacity, and has a compact structure and small size, with low requirements for construction and installation.

[0022] 2. In this utility model, the cooling water in the cooling pipe enters from the top and flows out from the top. The cooling water circulates in the middle of the two cooling pipes, and the cooling water can completely fill the cooling pipes for heat exchange, which helps to improve the heat dissipation efficiency of the cooling water.

[0023] 3. The mounting base of this utility model is equipped with a height-adjustable rolling shaft, which makes the movement of the cooling devices more flexible when connecting two cooling devices. This avoids residual stress on the extended pipe after locking, which could lead to sealing failure after long-term use and helps to increase the sealing effect of the connecting pipe. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the connection structure of the two cooling devices of this utility model;

[0026] Figure 3 This is a cross-sectional structural diagram of the two cooling devices of this utility model;

[0027] Figure 4 This is a schematic diagram of the installation structure of the two cooling devices of this utility model.

[0028] In the diagram: 1. Cooling platform; 11. Ladder; 12. Mounting base; 2. Cooling device; 21. Cooling pipe; 211. Water connecting pipe; 212. Water pipe interface; 22. Vent pipe; 221. Air pipe interface; 222. Air connecting pipe; 23. Diverter pipe; 24. Mounting frame; 3. Lifting rod; 31. Bottom shaft; 32. Rolling shaft; 4. Switching rod; 41. Pad block; 5. Exhaust fan. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] In the description of this utility model, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In this description of the utility model, "a number" means two or more, unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, terms such as "set" and "install" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] See Figures 1-4 A cooling circulation device for hot gas inside a sintering furnace includes a cooling platform 1, a mounting base 12 disposed on the cooling platform 1, and two cooling devices 2 horizontally disposed on the mounting base 12; at least one ladder 11 is provided on the cooling platform 1.

[0034] The cooling device 2 includes a cooling pipe 21 horizontally arranged on the mounting base 12, two vent pipes 22 respectively arranged at both ends of the cooling pipe 21, and a water connecting pipe 211 arranged at one end of the outer wall of the cooling pipe 21; an air connecting pipe 222 is arranged on the vent pipe 22 near the water connecting pipe 211, and an air pipe interface 221 is arranged on the vent pipe 22 away from the water connecting pipe 211; an exhaust fan 5 is arranged at the end of one of the air pipe interfaces 221.

[0035] The cooling pipe 21 is provided with plugs at both ends, and the plugs prevent the cooling pipe 21 from communicating with the vent pipe 22; the cooling device 2 includes a plurality of branch pipes 23 arranged axially in the cooling pipe 21; the two ends of the branch pipes 23 are respectively connected to the adjacent vent pipes 22.

[0036] A water pipe interface 212 is provided at the upper end of the cooling pipe 21, away from the water connecting pipe 211; the water connecting pipe 211 is horizontally arranged in the middle of the cooling pipe 21. Thermocouple temperature measuring devices are respectively provided at the upper ends of the two water pipe interfaces 212 and at the air pipe interface 221 near the exhaust fan 5. Drain valves are respectively provided at the lower ends of the cooling pipe 21 and the vent pipe 22.

[0037] The two water connecting pipes 211 and the two air connecting pipes 222 are respectively sealed and locked together by bolts; the lower part of both ends of the cooling device 2 is provided with mounting brackets 24; two lifting rods 3 are longitudinally slidably connected on the mounting base 12; the two lifting rods 3 are respectively located at both ends of the cooling device 2.

[0038] The upper end of the lifting rod 3 is provided with two sets of semi-tubes, each set including four semi-tubes; a rolling shaft 32 is rotatably connected inside the semi-tube; the rolling shaft 32 is arranged along the axial direction of the cooling pipe 21; the lower end of the lifting rod 3 is provided with multiple evenly distributed bottom shafts 31; two switching rods 4 are horizontally slidably connected on the mounting base 12; multiple pads 41 are evenly distributed on the upper end of the switching rods 4; the pads 41 can selectively abut against the lower end of the bottom shafts 31, thereby causing the rolling shafts 32 to extend upwards out of the mounting base 12.

[0039] The two ends of the switching rod 4 extend from both sides of the mounting base 12; in other embodiments, the mounting base 12 may also have two screws threadedly connected to it; the two screws abut against the ends of the two switching rods 4 respectively.

[0040] The mounting bracket 24 has multiple evenly distributed waist-shaped holes; the upper end of the mounting base 12 has multiple bolt holes; the bolt holes are directly opposite the waist-shaped holes; the length direction of the waist-shaped holes is perpendicular to the axial direction of the cooling device.

[0041] Installation process: Before installation, adjust the switching rod 4 so that the pad 41 abuts against the bottom shaft 31. The rolling shaft 32 on the lifting rod 3 extends upward from the mounting base 12. Place the two cooling devices 2 onto the rolling shaft 32. During this process, a gap is left between the two cooling devices for the placement of shims and screws. Place the shims between the two air connecting pipes 222 and the water connecting pipe 211, and insert the screws, then tighten them. The two cooling devices will move towards each other. During the tightening of the screws, the rolling shaft 32 reduces the moving resistance of the cooling devices 2.

[0042] After installation, the switching rod 4 is moved to a position where the pad 41 does not contact the bottom shaft 31 by tapping or by pushing it out with the lead screw. The lifting rod 3 is then lowered so that the cooling device 2 falls onto the mounting base 12. Finally, the bolts pass through the waist-shaped hole and the bolt hole to fix the cooling device onto the mounting base 12.

[0043] Operating Procedure: Driven by the exhaust fan 5, the hot gas generated in the sintering furnace sequentially passes through the vent pipe 22, the branch pipe 23 within the cooling pipe 21, the vent pipe 22, the gas connecting pipe 222, the vent pipe 22, the branch pipe 23 within the cooling pipe 21, and the vent pipe 22 again. Finally, the exhaust fan 5 re-enters the gas into the sintering furnace to achieve gas circulation. Cooling water flows in through one water pipe interface 212 and out through the other water pipe interface 212. As the cooling water flows through the two cooling pipes 21, it exchanges heat with the outer wall of the branch pipe 23, thus cooling the hot gas within the branch pipe 23.

[0044] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A cooling circulation device for hot gases in a sintering furnace, characterized by: The utility model provides a cooling device, including the installation base that sets up on the cooling platform and two horizontal cooling devices that set up on the installation base, the cooling device includes cooling pipe, the water communication pipe that sets up one end of cooling pipe outer wall, two ventilation pipes that set up in cooling pipe both ends respectively and the gas communication pipe that sets up on ventilation pipe near water communication pipe, two water communication pipes between and two gas communication pipes between respectively sealed butt joint, wherein, the cooling device both ends lower part sets up the mounting bracket respectively, the installation base longitudinal sliding connection has two lifting rods, two lifting rods locate cooling device both ends respectively, a plurality of rolling shafts are rotationally connected on the lifting rod, the rolling shaft can select with the lower end of mounting bracket.

2. The cooling circulating device according to claim 1, wherein: The lower end of the lifting rod is provided with a plurality of evenly distributed bottom shafts, the mounting base is horizontally slidably connected with two switching rods, the upper end of the switching rod is evenly distributed with a plurality of pads, and the pad can selectively abut against the lower end of the bottom shaft.

3. The cooling circulating device according to claim 2, wherein: The mounting base is screwedly connected with two lead screws, and the distal ends of the two switching rods abut against the two lead screws.

4. The cooling circulator according to any one of claims 1 to 3, wherein: The two ends of the cooling pipe are respectively provided with plugs, the plugs make the cooling pipe not communicate with the ventilation pipes, the cooling device comprises a plurality of shunt pipes arranged in the cooling pipe in the axial direction, and the two ends of the shunt pipe respectively communicate with the adjacent ventilation pipes.

5. The cooling circulator according to any one of claims 1 to 3, wherein: The upper end of the cooling pipe is provided with a water pipe interface away from one end of the water communication pipe, and the water communication pipe is horizontally arranged in the middle of the cooling pipe.

6. The cooling circulating device according to claim 5, wherein: The ventilation pipe away from the water communication pipe is provided with a gas pipe interface, and the distal end of one of the gas pipe interfaces is provided with an air extractor.

7. The cooling circulating device according to claim 6, wherein: The upper end of the two water pipe interfaces, the gas pipe interface close to the air extractor are respectively provided with a thermocouple temperature measuring device.

8. The cooling circulator according to any one of claims 1 to 3, wherein: The lower end of the cooling pipe and the lower end of the ventilation pipe are respectively provided with a drain valve.

9. The cooling circulator according to any one of claims 1 to 3, wherein: The upper end of the lifting rod is provided with a plurality of half pipes, and the rolling shafts are coaxially arranged in the half pipes.

10. The cooling circulator according to any one of claims 1 to 3, wherein: A plurality of evenly distributed waist-shaped holes are arranged through the mounting bracket, a plurality of bolt holes are arranged at the upper end of the mounting base, and the bolt holes are opposite to the waist-shaped holes.

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