Water-cooling screw conveyor for high-temperature iron oxide powder
Patent Information
- Application Number
- CN202522296387.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-30
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-10-30
AI Technical Summary
[0004]本实用新型的目的在于提供一种用于高温氧化铁粉的水冷螺旋输送装置，解决了常规水冷螺旋机输送高温氧化铁粉无法自动调节问题，适应范围广，能有效减少氧化铁粉对螺旋输送机的磨损，延长设备使用寿命，提高了设备运行稳定性，节约冷却水用量，降低了运行成本，有较好的节能环保效益和经济效益
[0010]进一步，根据在第一排水管道上安装的第一排水温度检测仪检测到的螺旋输送机的轴体冷却水排水温度情况，与安装在第三排水管道上的第三排水温度检测仪检测到的排水温度情况比较，自动连锁调节第一供水调节阀的最佳供水量，满足螺旋输送机轴体冷却系统冷却效果的情况下，节约冷却水用水量。
Smart Images
Figure CN224869189U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of screw conveyor technology and discloses a water-cooled screw conveyor device for high-temperature iron oxide powder. Background Technology
[0002] In the acid regeneration process production line of the metallurgical industry, the temperature of iron oxide powder coming out of the calcination furnace is generally ≥850℃. It is necessary to rapidly cool the high-temperature iron oxide powder to below 200℃ before conveying it to downstream equipment. At present, water-cooled screw conveyors are commonly used in China for cooling and conveying. The water-cooled screw conveyor uses two cooling water channels, one in the shaft and one in the shell, to cool the high-temperature iron oxide powder. In actual use, the supply of high-temperature iron oxide powder and the cooling water parameters often change, resulting in unstable cooling effect of the water-cooled screw conveyor. The temperature of the cooled iron oxide powder cannot meet the production process requirements, which affects the stable operation of downstream process equipment.
[0003] In summary, the main technical problems existing in the current technology are as follows: 1. The actual conveying volume and temperature parameters of iron oxide powder deviate from the conveying and cooling capacity of the water-cooled screw conveyor and cannot be adjusted. As a result, the temperature of the cooled iron oxide powder cannot meet the production process requirements, which affects the stable operation of downstream process equipment. 2. The temperature and flow rate of the cooling water in the shaft cooling water channel and the shell cooling water channel of the water-cooled screw conveyor affect the cooling capacity of the water-cooled screw conveyor. Without adjustment measures, the cooling effect of the water-cooled screw conveyor becomes unstable. Utility Model Content
[0004] The purpose of this utility model is to provide a water-cooled screw conveyor for high-temperature iron oxide powder, which solves the problem that conventional water-cooled screw conveyors cannot automatically adjust when conveying high-temperature iron oxide powder. It has a wide range of applications, can effectively reduce the wear of iron oxide powder on the screw conveyor, extend the service life of the equipment, improve the stability of equipment operation, save cooling water consumption, reduce operating costs, and has good energy-saving, environmental protection and economic benefits.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A water-cooled screw conveyor for high-temperature iron oxide powder includes a screw conveyor, a screw conveyor shaft cooling system, and a screw conveyor housing cooling system. A feed pipe is provided above one side of the screw conveyor, and a discharge pipe is provided below the other side of the screw conveyor. An electric feed valve is provided at the upper end of the feed pipe, and a discharge short pipe is provided at the lower end of the discharge pipe. An outlet material temperature detector is provided on the discharge short pipe.
[0006] The cooling system for the screw conveyor shaft includes a first water supply pipe equipped with a water supply pipe temperature detector. The first water supply pipe is connected upward to a second water supply pipe, which is equipped with a first water supply flow detector. The second water supply pipe is connected upward to a screw conveyor shaft cooling water channel via a first water supply regulating valve. The screw conveyor shaft cooling water channel penetrates the interior of the screw conveyor. The screw conveyor shaft cooling water channel is connected downward to a first drain pipe, which is equipped with a first drain temperature detector. The first drain pipe is connected downward to a second drain pipe, which is equipped with a second drain temperature detector.
[0007] The cooling system for the screw conveyor housing includes a third water supply pipe, on which a second water supply flow meter is installed. The third water supply pipe is connected upward to the cooling water channel of the screw conveyor housing via a second water supply regulating valve. The cooling water channel of the screw conveyor housing is located outside the screw conveyor. The cooling water channel of the screw conveyor housing is connected downward to a third drainage pipe, on which a third drainage temperature meter is installed.
[0008] The feed inlet of the feed pipe is connected to the outlet of the electric feed valve, and the inlet of the discharge short pipe is connected to the outlet of the discharge pipe. An outlet material temperature detector is installed on the discharge short pipe to detect the temperature of the iron oxide powder inside. The inlet of the first water supply pipe is connected to the external cooling water supply network. The outlet of the first water supply pipe splits into two branches: one connected to the inlet of the second water supply pipe, and the other connected to the inlet of the third water supply pipe. A water supply pipe temperature detector is installed on the first water supply pipe to detect the temperature of the cooling water supplied within it. The outlet of the second water supply pipe is connected to the inlet of the first water supply regulating valve. The outlet of the first water supply regulating valve is connected to the inlet of the cooling water channel for the screw conveyor shaft. The inlet of the first drain pipe is connected to the cooling water outlet of the screw conveyor shaft. The system is as follows: the outlet of the first drainage pipe is connected to the inlet of the second water supply regulating valve, the outlet of the second water supply regulating valve is connected to the inlet of the cooling water channel of the screw conveyor housing, the inlet of the third drainage pipe is connected to the cooling water outlet of the screw conveyor housing, and the third drainage pipe is installed on the third drainage pipe to detect the cooling water temperature inside the third drainage pipe; the outlets of the first and second drainage pipes merge and are connected to the inlet of the second drainage pipe, the outlet of the second drainage pipe is connected to the external cooling water return pipe, and the second drainage pipe is installed on the second drainage pipe to detect the cooling water temperature inside the third drainage pipe.
[0009] Furthermore, based on the temperature of the iron oxide powder detected by the outlet material temperature detector installed on the discharge short pipe, and compared with the temperature required by the process, the optimal feed rate of the electric feed valve is automatically interlocked and adjusted. This can effectively reduce the wear of the screw conveyor on the iron oxide powder, extend the service life of the equipment, and ensure the stable cooling effect of the iron oxide powder.
[0010] Furthermore, based on the discharge temperature of the screw conveyor shaft cooling water detected by the first discharge temperature detector installed on the first discharge pipe, and compared with the discharge temperature detected by the third discharge temperature detector installed on the third discharge pipe, the optimal water supply of the first water supply regulating valve is automatically interlocked and adjusted to save cooling water consumption while meeting the cooling effect of the screw conveyor shaft cooling system.
[0011] Furthermore, based on the discharge temperature of the screw conveyor shell cooling water detected by the second discharge temperature detector installed on the second discharge pipe, and compared with the discharge temperature detected by the third discharge temperature detector installed on the third discharge pipe, the optimal water supply of the second water supply regulating valve is automatically interlocked and adjusted to save cooling water consumption while meeting the cooling effect of the screw conveyor shell cooling system.
[0012] The advantages of this utility model are: 1. It solves the problem that conventional water-cooled screw conveyors cannot automatically adjust the temperature of high-temperature iron oxide powder, has a wide range of applications, can effectively reduce the wear of iron oxide powder on the screw conveyor, extend the service life of the equipment, and improve the stability of equipment operation; 2. Automatic adjustment of cooling water temperature and cooling water flow is set in the shaft cooling system and shell cooling system of the screw conveyor respectively, which saves cooling water consumption and reduces operating costs while meeting the cooling effect of the screw conveyor, resulting in good energy-saving, environmental protection and economic benefits. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the system flow of this utility model; Figure 2 This invention relates to a cooling system for the shaft of a screw conveyor. Figure 3 This invention relates to a cooling system for the casing of a screw conveyor.
[0014] The components include: 1. Screw conveyor; 2. Screw conveyor shaft cooling system; 3. Screw conveyor shell cooling system; 11. Feed pipe; 12. Discharge pipe; 13. Electric feed valve; 14. Discharge short pipe; 15. Outlet material temperature detector; 21. First water supply pipe; 22. Water supply pipe temperature detector; 23. Second water supply pipe; 24. First water supply flow meter; 25. First water supply regulating valve; 26. Screw conveyor shaft cooling water channel; 27. First drainage pipe; 28. First drainage temperature detector; 29. Second drainage pipe; 30. Second drainage temperature detector; 31. Third water supply pipe; 32. Second water supply flow meter; 33. Second water supply regulating valve; 34. Screw conveyor shell cooling water channel; 35. Third drainage pipe; 36. Third drainage temperature detector. Detailed Implementation
[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments in this application specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection claimed in this application.
[0016] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application 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. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0017] like Figures 1 to 3 As shown, this utility model provides a water-cooled screw conveyor for high-temperature iron oxide powder, including a screw conveyor, a screw conveyor shaft cooling system, and a screw conveyor housing cooling system. A feed pipe is provided above one side of the screw conveyor, and a discharge pipe is provided below the other side of the screw conveyor. An electric feed valve is provided at the upper end of the feed pipe, and a discharge short pipe is provided at the lower end of the discharge pipe. An outlet material temperature detector is provided on the discharge short pipe.
[0018] The cooling system for the screw conveyor shaft includes a first water supply pipe equipped with a water supply pipe temperature detector. The first water supply pipe is connected upward to a second water supply pipe, which is equipped with a first water supply flow detector. The second water supply pipe is connected upward to a screw conveyor shaft cooling water channel via a first water supply regulating valve. The screw conveyor shaft cooling water channel penetrates the interior of the screw conveyor. The screw conveyor shaft cooling water channel is connected downward to a first drain pipe, which is equipped with a first drain temperature detector. The first drain pipe is connected downward to a second drain pipe, which is equipped with a second drain temperature detector.
[0019] The cooling system for the screw conveyor housing includes a third water supply pipe, on which a second water supply flow meter is installed. The third water supply pipe is connected upward to the cooling water channel of the screw conveyor housing via a second water supply regulating valve. The cooling water channel of the screw conveyor housing is located outside the screw conveyor. The cooling water channel of the screw conveyor housing is connected downward to a third drainage pipe, on which a third drainage temperature meter is installed.
[0020] The inlet of feed pipe 11 is connected to the outlet of electric feed valve 13, and the outlet of discharge pipe 12 is connected to the inlet of discharge short pipe 14. Discharge short pipe 14 is equipped with an outlet material temperature detector 15, which can detect the temperature of the iron oxide powder inside the discharge short pipe. The inlet of the first water supply pipe 21 is connected to the external cooling water supply pipe network. The outlet of the first water supply pipe 21 is divided into two branches: one branch is connected to the inlet of the second water supply pipe 23, and the other branch is connected to the inlet of the third water supply pipe 31. A water supply pipe temperature detector 22 is installed on the first water supply pipe 21, which can detect the cooling water supply temperature inside the first water supply pipe 21. The outlet of the second water supply pipe 23 is connected to the inlet of the first water supply regulating valve 25, and the outlet of the first water supply regulating valve 25 is connected to the inlet of the screw conveyor shaft cooling water channel 26. The inlet of the first drain pipe 27 is connected to the outlet of the screw conveyor shaft cooling water channel 26. The system is configured such that: a first drainage temperature detector 28 is installed on the first drainage pipe 27, capable of detecting the drainage temperature of the cooling water inside the first drainage pipe 27; the outlet of the third water supply pipe 31 is connected to the inlet of the second water supply regulating valve 33, the outlet of the second water supply regulating valve 33 is connected to the inlet of the cooling water channel 34 of the screw conveyor housing, the inlet of the third drainage pipe 35 is connected to the outlet of the cooling water channel 34 of the screw conveyor housing, and a third drainage temperature detector 36 is installed on the third drainage pipe 35, capable of detecting the drainage temperature of the cooling water inside the third drainage pipe 35; the outlets of the first drainage pipe 27 and the third drainage pipe 35 are connected to the inlet of the second drainage pipe 29, the outlet of the second drainage pipe 29 is connected to the external pipe network cooling water return pipe, and a second drainage temperature detector 30 is installed on the second drainage pipe 29, capable of detecting the drainage temperature of the cooling water inside the second drainage pipe 29.
[0021] Based on the temperature of the iron oxide powder detected by the outlet material temperature detector 15, and compared with the temperature required by the process, the optimal feed rate of the electric feed valve 13 is automatically adjusted by interlocking, which can effectively reduce the wear of iron oxide powder on the screw conveyor 1, extend the service life of the equipment, and ensure the stable cooling effect of iron oxide powder. Based on the drainage temperature of the screw conveyor shaft cooling water channel 26 detected by the first drainage temperature detector 28, and compared with the drainage temperature detected by the second drainage temperature detector 30 installed on the second drainage pipe 29, the optimal water supply of the first water supply regulating valve 25 is automatically interlocked and adjusted to save cooling water consumption while meeting the effect of the screw conveyor shaft cooling system 2. Based on the drainage temperature of the screw conveyor housing cooling water channel 34 detected by the third drainage temperature detector 36, and compared with the drainage temperature detected by the second drainage temperature detector 30 installed on the second drainage pipe 29, the second water supply regulating valve 33 is automatically interlocked to adjust the optimal water supply volume, so as to save cooling water consumption while meeting the effect of the screw conveyor housing cooling system 3.
[0022] Based on the actual operation of an acid regeneration production line in a metallurgical industry, for example, the flow rate of iron oxide powder from the calcination furnace is 2000 kg / h, and the temperature is 850℃. The high-temperature iron oxide powder needs to be rapidly cooled to below 100℃ to ensure stable operation of downstream process equipment. The screw conveyor shaft cooling system 2 bears 40% of the cooling load, and the screw conveyor shell cooling system 3 bears 60% of the cooling load. The designed supply temperature of the cooling water is 33℃, and the designed outlet temperature is 43℃. The specific operation and control methods of the water-cooled screw conveyor device for high-temperature iron oxide powder are as follows: 1. First, turn on the cooling system of the water-cooled screw conveyor and check that the cooling water flow rate, temperature and pressure meet the design requirements. Then start the water-cooled screw conveyor 1 and open the electric feed valve 13. At this time, the high-temperature iron oxide powder from the calcining furnace enters the screw conveyor 1 through the feed port of the screw conveyor 1 via the electric feed valve 13 and is cooled and conveyed. The cooled iron oxide powder flows out through the discharge port of the screw conveyor 1 and enters the downstream process equipment through the discharge short pipe 14. The external cooling water supply flows into the first water supply pipe and is divided into two paths. One path passes through the second water supply pipe 23 and the first water supply regulating valve 25 into the cooling water channel 26 of the screw conveyor shaft, where it indirectly exchanges heat with the high-temperature iron oxide powder in the screw conveyor 1.
[0023] 2. When the temperature of the iron oxide powder detected by the outlet material temperature detector 15 is ≥100℃, the opening of the electric feed valve 13 is automatically reduced to reduce the supply of iron oxide powder; when the temperature of the iron oxide powder detected by the temperature detector 15 is ≤90℃ (adjustable according to production conditions), the opening of the electric feed valve 13 is automatically increased to increase the supply of iron oxide powder, maintain the optimal conveying capacity of the water-cooled screw conveyor, ensure the stable cooling effect of iron oxide powder, and effectively reduce the wear of iron oxide powder on the screw conveyor 1, thus extending the service life of the equipment. 3. When the drainage temperature of the screw conveyor shaft cooling water channel 26 detected by the first drainage temperature detector 28 is 2℃ higher than the drainage temperature detected by the second drainage temperature detector 29 (adjustable according to production conditions), it indicates that the flow rate of the screw conveyor shaft cooling system 2 is too low. The automatic interlock adjustment increases the opening of the first water supply regulating valve 25 to increase its water supply. When the drainage temperature of the screw conveyor shaft cooling water channel 26 detected by the first drainage temperature detector 28 is less than the drainage temperature detected by the second drainage temperature detector 29 (adjustable according to production conditions), it indicates that the flow rate of the screw conveyor shaft cooling system 2 is too high. The automatic interlock adjustment decreases the opening of the first water supply regulating valve 25 to reduce its water supply. Through automatic system adjustment, the optimal water supply flow rate of the cooling water is maintained to meet the cooling effect of the screw conveyor shaft cooling system 2.
[0024] 4. When the drainage temperature of the screw conveyor housing cooling water channel 34 detected by the third drainage temperature detector is 2℃ higher than the drainage temperature detected by the second drainage temperature detector 29 (adjustable according to production conditions), it indicates that the flow rate of the screw conveyor housing cooling water system 3 is too low. The automatic interlock adjustment increases the opening of the second water supply regulating valve 33 to increase its water supply. When the drainage temperature of the screw conveyor housing cooling water channel 34 detected by the first drainage temperature detector 28 is less than the drainage temperature detected by the second drainage temperature detector 29 (adjustable according to production conditions), it indicates that the flow rate of the screw conveyor housing cooling system 3 is too high. The automatic interlock adjustment decreases the opening of the second water supply regulating valve 33 to reduce its water supply. Through automatic system adjustment, the optimal water supply flow rate of the cooling water is maintained to meet the cooling effect of the screw conveyor housing cooling system 3.
[0025] Working Principle: This system employs a water-cooled screw conveyor for high-temperature iron oxide powder, solving the problem of conventional water-cooled screw conveyors' inability to automatically adjust the flow rate of high-temperature iron oxide powder. High-temperature iron oxide powder enters the screw conveyor 1 through the inlet of the screw conveyor 1 via an electric feed valve 13 for cooling and conveying. The cooled iron oxide powder then flows through the discharge pipe 3 into downstream process equipment. External cooling water flows into the screw conveyor shaft cooling system 2 and the screw conveyor shell cooling system 3, indirectly exchanging heat with the high-temperature iron oxide powder inside the screw conveyor 1, thus improving the equipment's operational stability. The supply of high-temperature iron oxide powder is automatically adjusted based on the outlet water temperature of the screw conveyor shaft cooling system 2 and the screw conveyor shell cooling system 3. This saves cooling water consumption and reduces operating costs while maintaining the desired cooling effect of the screw conveyor, resulting in significant energy-saving, environmental, and economic benefits.
[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A water-cooled screw conveyor for high-temperature iron oxide powder, characterized in that, The system includes a screw conveyor (1), a screw conveyor shaft cooling system (2), and a screw conveyor housing cooling system (3). A feed pipe (11) is provided on the upper side of one side of the screw conveyor (1), and a discharge pipe (12) is provided on the lower side of the other side of the screw conveyor (1). An electric feed valve (13) is provided at the upper end of the feed pipe (11), and a discharge short pipe (14) is provided at the lower end of the discharge pipe (12). An outlet material temperature detector (15) is provided on the discharge short pipe (14).
2. The water-cooled screw conveyor for high-temperature iron oxide powder according to claim 1, characterized in that, The screw conveyor shaft cooling system (2) includes a first water supply pipe (21), a water supply pipe temperature detector (22) is installed on the first water supply pipe (21), the first water supply pipe (21) is connected upward to a second water supply pipe (23), a first water supply flow detector (24) is installed on the second water supply pipe (23), the second water supply pipe (23) is connected upward to a screw conveyor shaft cooling water channel (26) through a first water supply regulating valve (25), the screw conveyor shaft cooling water channel (26) penetrates the inside of the screw conveyor (1), the screw conveyor shaft cooling water channel (26) is connected downward to a first drain pipe (27), a first drain temperature detector (28) is installed on the first drain pipe (27), the first drain pipe (27) is connected downward to a second drain pipe (29), and a second drain temperature detector (30) is installed on the second drain pipe (29).
3. The water-cooled screw conveyor for high-temperature iron oxide powder according to claim 1, characterized in that, The cooling system (3) of the screw conveyor housing includes a third water supply pipe (31), on which a second water supply flow meter (32) is installed. The third water supply pipe (31) is connected upward to the cooling water channel (34) of the screw conveyor housing through a second water supply regulating valve (33). The cooling water channel (34) of the screw conveyor housing is located outside the screw conveyor (1). The cooling water channel (34) of the screw conveyor housing is connected downward to a third drain pipe (35). A third drain temperature meter (36) is installed on the third drain pipe (35).
4. A water-cooled screw conveyor for high-temperature iron oxide powder according to claim 2, characterized in that, The second water supply pipe (23) and the third water supply pipe (31) receive water through the first water supply pipe (21), and the first drainage pipe (27) and the third drainage pipe (35) drain water through the second drainage pipe (29).