Dust removal device of rolling mill

Abstract

The utility model provides a dust removal device for a rolling mill, which belongs to the technical field of dust removal of rolling mills, and is characterized in that the spray pressure is accurately adjusted through a variable frequency pump, the vertical and transverse positions of a nozzle can be respectively adjusted through a vertical adjusting sleeve and a transverse adjusting sleeve, the position of the nozzle is flexibly adjusted, and the accurate regulation and control of a spraying point position are realized. The variable frequency pump is arranged at the output end of the circulating water tank, so that the collected rolling mill dedusting wastewater can be reused for spray dedusting, and waste of water resources is reduced. The on-off of water flow can be controlled through the water cutting valve arranged on the water inlet pipe, and start-stop control over spraying dust removal is achieved. In conclusion, the spraying pressure is adjusted through the variable frequency pump, waste water is recycled, the position of the nozzle is accurately adjusted, water flow is flexibly controlled, and efficient, energy-saving and environment-friendly rolling mill dust removal is achieved. The device is simple in structure, convenient to maintain and suitable for various working conditions, and has remarkable economic and environmental benefits.

Description

Technical Field

[0001] This utility model relates to the field of mining construction technology, specifically to a dust removal device for rolling mills. Background Technology

[0002] The high-temperature problem in deep mining primarily stems from the increased geothermal gradient; that is, the temperature of the underground rock strata rises with increasing mining depth. Therefore, the high-temperature problem is particularly prominent in deep mining, especially when the ventilation system is not yet fully established during the mine's infrastructure construction phase. The high-temperature environment poses a severe challenge to operational safety, efficiency, and equipment operation. Specifically, during the infrastructure phase, due to the lack of a permanent ventilation system and the presence of numerous dead-end roadways, ventilation at the working face mainly relies on local fans connected to ventilation ducts. However, this ventilation method often results in excessively high working face temperatures during muck removal and drilling operations, due to the large amount of heat generated. In other words, conventional ventilation methods are ineffective in reducing the working face temperature.

[0003] In addition, a mine ventilation device (publication number CN218862651 U) is disclosed in the prior art. It connects an outlet pipe to the top of a ventilation box and an inlet pipe to the bottom. A fan inside the outlet pipe draws in air to circulate it within the mine. A filter assembly located between the outlet and inlet pipes filters the air drawn from the mine, which contains dust and impurities. This ensures that the dusty air is mixed with water before passing through the fan, effectively increasing the fan's operating time and ventilation efficiency. While it provides some ventilation, its cooling effect is limited.

[0004] Therefore, there is an urgent need for a high-efficiency dust removal device for rolling mills. Utility Model Content

[0005] The purpose of this utility model is to provide a dust removal device for rolling mills to solve at least one technical problem existing in the prior art.

[0006] This utility model protects a dust removal device for a rolling mill, comprising a variable frequency pump for adjusting spray pressure, a water cut-off valve, a water inlet pipe, a nozzle, a vertical adjustment sleeve for adjusting the vertical position of the nozzle, and a horizontal adjustment sleeve for adjusting the horizontal position of the nozzle; wherein, the variable frequency pump is located at the output end of a circulating water tank for collecting rolling mill dust removal wastewater, and the water inlet pipe is connected to the output end of the variable frequency pump; the water inlet pipe is sequentially connected to the vertical adjustment sleeve and the horizontal adjustment sleeve, and the nozzle is located at the end of the horizontal adjustment sleeve; a water cut-off valve is provided on the water inlet pipe.

[0007] Furthermore, a preferred structure is that a vertical fixed sleeve is movably disposed on the outer periphery of the vertical adjusting sleeve, and a horizontal fixed sleeve is movably disposed on the outer periphery of the horizontal adjusting sleeve, wherein the vertical fixed sleeve and the horizontal fixed sleeve are connected by a reinforcing rod.

[0008] Furthermore, a preferred structure further includes, wherein the vertical adjustment sleeve comprises a metal flexible hose and a vertical water pipe that are fitted together, and the vertical fixing sleeve is disposed on the vertical water pipe.

[0009] Furthermore, in a preferred configuration, the lateral adjustment sleeve comprises a metal flexible hose and a lateral water pipe that are fitted together, and the lateral fixing sleeve is disposed on the lateral water pipe.

[0010] Furthermore, a preferred structure is that the nozzle is a spiral nozzle with an atomization angle of 60° to 170°.

[0011] Furthermore, a preferred structure is that an anti-collision cover is provided outside the nozzle.

[0012] Furthermore, a preferred structure further includes a control module for connecting the water-cutting valve, nozzle, and variable frequency pump.

[0013] Furthermore, in a preferred configuration, the control module further includes a nozzle position adjustment unit, used to acquire smoke volume data at each dust outlet working position of the rolling mill using a smoke concentration monitoring sensor; and to adjust the nozzle position of the dust removal spray according to the acquired smoke volume data at each dust outlet working position.

[0014] Furthermore, in a preferred configuration, the control module includes a nozzle pressure adjustment unit, used to determine the required spray pressure based on the smoke volume data at the dust outlet working position corresponding to the nozzle position; and to control the water supply pressure by adjusting the speed of the variable frequency pump according to the required spray pressure, so as to perform spray dust removal at the dust outlet working position corresponding to the nozzle position.

[0015] Furthermore, in a preferred configuration, the control module further includes a dust removal point control unit, used to detect roll biting signals and roll stripping signals using roll biting sensors and roll stripping sensors at the dust removal workstation; when the roll biting sensor detects a roll biting signal, it starts spray dust removal by controlling the water cutting valve and the frequency converter pump; when the roll stripping sensor detects a roll stripping signal, it stops spray dust removal by controlling the water cutting valve and the frequency converter pump.

[0016] As described above, the mill dust removal device of this invention precisely adjusts the spray pressure using a variable frequency pump to ensure optimal spraying effect and improve dust removal efficiency. The vertical and horizontal adjustment sleeves allow for independent adjustment of the nozzle's vertical and horizontal positions, enabling precise control of the spray points and ensuring wide and uniform dust removal coverage. By placing the variable frequency pump at the output end of the circulating water tank, the collected mill dust removal wastewater can be reused for spray dust removal, reducing water waste. A water-cutting valve on the inlet pipe controls the flow of water, enabling start-up and shutdown of the spray dust removal. In summary, this invention achieves efficient, energy-saving, and environmentally friendly mill dust removal through variable frequency pump adjustment of spray pressure, wastewater recycling, precise nozzle position adjustment, and flexible water flow control. Its simple structure, convenient maintenance, and applicability to various operating conditions result in significant economic and environmental benefits. Attached Figure Description

[0017] Other objects and results of this invention will become more apparent and readily understood upon reference to the following description taken in conjunction with the accompanying drawings and the contents of the claims, and with a more complete understanding of the invention. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of a rolling mill dust removal device according to an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the process of a rolling mill dust removal device according to an embodiment of the present invention. Detailed Implementation

[0020] In the following description, numerous specific details are set forth for illustrative purposes and to provide a thorough understanding of one or more embodiments. However, it will be apparent that these embodiments may also be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagram form for ease of description of one or more embodiments.

[0021] It should be understood that the terms "horizontal", "vertical", "upper", "lower", "top", "middle", "length", "inner", "bottom", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model.

[0022] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Example 1

[0024] Figure 1 A schematic diagram of the structure of a rolling mill dust removal device according to this utility model is shown. Figure 1 As shown, this utility model protects a mill dust removal device, including a variable frequency pump 1 for adjusting spray pressure, a water-cutting valve 3, a water inlet pipe 2, a nozzle 13, a vertical adjusting sleeve for adjusting the vertical position of the nozzle 13, and a horizontal adjusting sleeve for adjusting the horizontal position of the nozzle 13. The variable frequency pump 1 is located at the output end of a circulating water tank for collecting mill dust removal wastewater, and the water inlet pipe 2 is connected to the output end of the variable frequency pump 1. The water inlet pipe 2 is sequentially connected to the vertical adjusting sleeve and the horizontal adjusting sleeve, and the nozzle 13 is located at the end of the horizontal adjusting sleeve. A water-cutting valve 3 is installed on the water inlet pipe 2. In other words, the water inlet pipe 2, the vertical adjusting sleeve, and the horizontal adjusting sleeve are sequentially connected outside the circulating water tank, and the nozzle 13 is located at the end of the horizontal adjusting sleeve. Specifically, it also includes a first 90° elbow 7 connecting the vertical adjusting sleeve and the horizontal adjusting sleeve for changing the water flow direction; and a second 90° elbow 11 connecting the horizontal adjusting sleeve and the nozzle 13.

[0025] In the specific implementation process, to further improve the stability of the structure, the vertical adjustment sleeve is fixedly installed on the ground by the base 4. A vertical fixing sleeve 6 is movably installed on the outer periphery of the vertical adjustment sleeve, and a horizontal fixing sleeve 10 is movably installed on the outer periphery of the horizontal adjustment sleeve. The vertical fixing sleeve 6 and the horizontal fixing sleeve 10 are connected by a reinforcing rod 14. The vertical adjustment sleeve includes a metal hose 8 and a vertical water pipe 5 that are fitted together, and the vertical fixing sleeve 6 is installed on the vertical water pipe 5. The horizontal adjustment sleeve includes a metal hose 8 and a horizontal water pipe 9 that are fitted together, and the horizontal fixing sleeve 10 is installed on the horizontal water pipe 9. The vertical fixing sleeve 6, the horizontal fixing sleeve 10, and the reinforcing rod 14 form a stable triangular structure to support the entire spray system and ensure its stable operation. The vertical fixing sleeve 6 is movably installed on the outer periphery of the vertical water pipe 5, allowing it to slide and be locked onto the vertical water pipe 5. For example, a sliding chamber is provided inside the vertical adjustment sleeve 5. The vertical water pipe 5 is inserted into the sliding chamber and can slide axially. A locking device is provided, including a clamping ring and an eccentric locking handle. A limiting block is set inside the clamping ring, which fits against the planar structure of the outer wall of the vertical water pipe 5. Locking and unlocking are achieved through the eccentric locking handle. Other movable and lockable connections can include a locking pin and a pull rod, a fixing rod and a compression spring, etc., without specific limitations. The sliding principle is that the vertical water pipe 5 is inserted into the sliding chamber of the vertical fixed sleeve 6, and the sliding function is achieved through the limiting block or the fixing rod. The outer wall of the vertical water pipe 5 can have a planar structure or insertion hole, which cooperates with the locking device to guide and position the sliding. The locking principle is that an eccentric locking handle or locking pin structure is used. When fixation is required, the locking device is switched to the locked position by operating the handle or pull rod. A compression spring provides locking force to ensure that the vertical water pipe 5 will not loosen in the locked state. When adjustment is needed, the locking device is switched to the unlocked position, and the vertical fixing sleeve 6 can slide freely along the vertical water pipe 5. Specifically, the water inlet pipe 2 is connected to the water cut valve 3. The water flows through the vertical water pipe 5, through the elbow 7 and the metal hose 8 to the nozzle 13. The vertical fixing sleeve 6 can only move up and down along the pipe 5, and the horizontal fixing sleeve 10 can only move horizontally along the horizontal pipe. Fixing buckles are set on both sides of the sleeve, and the reinforcing rod 14 can be extended and adjusted. The vertical fixing sleeve 6, the horizontal fixing sleeve 6, and the reinforcing rod 14 are used to fix and adjust the spray point position, so as to achieve precise control of the spray point position.

[0026] As an improvement in this embodiment, the nozzle 13 is a spiral nozzle with an atomization angle of 60° to 170°. Specifically, the spiral nozzle has an atomization angle of 60°-170°, and its internal structure is unobstructed, forming a free-flowing channel. Water flows through the spiral's layered interfaces, resulting in layered spraying. Each spiral nozzle has 3 to 4 layered spray interfaces, providing excellent atomization and effectively removing suspended matter from the air. Impurities in the wastewater can pass through the nozzle in large quantities without clogging. This is suitable for scenarios involving wastewater spray dust suppression.

[0027] As an improvement to this embodiment, a shock absorber 12 is provided outside the nozzle 13. This shield is provided outside the nozzle to protect it.

[0028] Furthermore, a preferred structure further includes a control module for connecting the water-cutting valve 3, the nozzle 13, and the variable frequency pump 1. The control module includes a nozzle position adjustment unit, used to acquire smoke volume data at each dust-exit working position of the rolling mill using a dust concentration monitoring sensor; and to adjust the position of the dust-suppressing spray nozzle 13 based on the acquired smoke volume data at each dust-exit working position. The control module also includes a nozzle pressure adjustment unit, used to determine the required spray pressure based on the smoke volume data at the dust-exit working position corresponding to the nozzle 13 position; and to control the water supply pressure by adjusting the rotation speed of the variable frequency pump 1 according to the required spray pressure, thereby performing dust suppression spraying at the dust-exit working position corresponding to the nozzle 13 position. The control module also includes a dust removal point control unit, which is used to detect roll biting signals and roll stripping signals using roll biting sensors and roll stripping sensors at the dust removal work position; when the roll biting sensor detects a roll biting signal, it starts spray dust removal by controlling the water cutting valve 3 and the variable frequency pump 1; when the roll stripping sensor detects a roll stripping signal, it stops spray dust removal by controlling the water cutting valve 3 and the variable frequency pump 1.

[0029] In this invention, the control module can be configured as an automatic control system based on a PLC (Programmable Logic Controller). That is, by combining the control unit with multiple sensors, more complex control logic can be achieved. The control unit can also be configured with fault diagnosis and alarm functions; when a sensor malfunctions, the system can automatically alarm and take corresponding emergency measures. For example, a fault alarm mechanism can be set up in the system to promptly issue an alarm and stop spraying when equipment such as the water-cutting valve, sensor, or frequency converter pump malfunctions. The system has a manual operation mode for emergency operation in case of automatic control failure. Alternatively, in specific implementations, the control module in the mill dust removal device of the above embodiments can be an electronic device. This electronic device can include a processor, memory, and bus, and can also include a computer program stored in the memory and executable on the processor, such as a mill dust removal program. The memory can include both internal storage units of the mill dust removal device and external storage devices. The memory can be used not only to store application software and various types of data, such as the code of the mill dust removal program, but also to temporarily store data that has been output or will be output. The electronic device may include a processor, memory, and a bus, and may also include a computer program, such as a rolling mill dust removal program, stored in the memory and executable on the processor. The memory may include both internal storage units of the rolling mill dust removal device and external storage devices. The memory can be used not only to store application software and various types of data, such as the code for the rolling mill dust removal program, but also to temporarily store data that has been output or will be output. The aforementioned electronic device is used to execute the process of the spray dust removal method of the rolling mill dust removal device described below.

[0030] Example 2

[0031] Figure 2 This is a schematic diagram of the process of spray dust removal using a rolling mill dust removal device according to an embodiment of this utility model. Figure 2 As shown, the process of using a rolling mill dust collector for spray dust suppression includes:

[0032] S110. At each dust discharge work station of the rolling mill, the smoke volume data at the corresponding dust discharge work station is obtained using a smoke and dust concentration monitoring sensor.

[0033] S120. Adjust the nozzle position of the dust removal spray according to the obtained smoke volume data at each dust outlet work position.

[0034] S130. Determine the required spray pressure based on the amount of smoke at the dust outlet working position corresponding to the nozzle position.

[0035] S140. The water supply pressure is controlled by adjusting the speed of the variable frequency pump according to the required spray pressure, and the dust removal is performed at the dust outlet position corresponding to the nozzle position.

[0036] As an improvement to this embodiment, the process of controlling the water supply pressure by adjusting the speed of the variable frequency pump according to the required spray pressure, and performing spray dust removal at the dust outlet position corresponding to the nozzle position, further includes the following steps:

[0037] S141. Roll biting and roll stripping signals are detected using roll biting and stripping sensors at the dust removal workstation. S142. When the roll biting sensor detects a roll biting signal, the spray dust removal is started by controlling the water-cutting valve and the variable frequency pump. S143. When the roll stripping sensor detects a roll stripping signal, the spray dust removal is stopped by controlling the water-cutting valve and the variable frequency pump. Specifically, the start and stop of the spray dust removal are automatically controlled by the roll biting and stripping sensors, reducing manual intervention and improving efficiency. The mill spray dust removal method of this embodiment is adjusted in real time according to the working conditions to ensure the dust removal effect.

[0038] As an improvement to this embodiment, to reduce water waste, the water source for spray dust removal comes from a circulating water tank that collects wastewater from cooling water. After filtration and sedimentation, the water is reused for spray dust removal. Specific steps include: collecting cooling water used for water cooling of the rolls and steel into the circulating water tank; filtering and sedimenting the wastewater in the circulating water tank; and using the wastewater in the circulating water tank for spray dust removal via the variable frequency pump. To further utilize water resources, the wastewater after spray dust removal is also collected into the circulating water tank. Specifically, the process of recycling water resources includes: S1401, collecting the water after spray dust removal into the circulating water tank, and collecting the cooling water used for water cooling of the rolls and steel into the circulating water tank; S1402, filtering and sedimenting the wastewater in the circulating water tank; S1403, using the wastewater in the circulating water tank for spray dust removal via the variable frequency pump. It should be noted that during the rolling mill production process, wastewater can come from the cooling water used to cool the rolls and steel, the cleaning water used before rolling, the cleaning water after a leak in the lubrication system, or the pickling wastewater used for surface treatment during the rolling process. However, in practice, to save on wastewater treatment costs, only the cooling water from the rolls and steel is used.

[0039] It should be noted that in the process of adjusting the nozzle position of the dust suppression spray based on the acquired smoke volume data at each dust outlet working position, and determining the required spray pressure based on the smoke volume data at the corresponding dust outlet working position, machine learning methods are used to predict ideal spray parameters. Furthermore, the machine learning model can be integrated into the automated control system to achieve automated adjustment of the spray system, reducing the workload of operators. In summary, the application of machine learning technology in spray dust suppression systems can not only improve dust removal efficiency but also optimize resource utilization and enhance the system's automation level and overall performance.

[0040] To further enhance dust removal efficiency, the nozzle is a spiral nozzle capable of producing solid or hollow cone-shaped sprays. The atomization angle of the spiral nozzle is 60°-170°. Using a spiral nozzle capable of producing solid or hollow cone-shaped sprays with an atomization angle of 60°-170° ensures a wide and uniform spray coverage, improving dust removal efficiency. It should be noted that the spiral nozzle is a high-efficiency atomizing nozzle with an atomization angle range of 60° to 170°, allowing for flexible selection based on different application scenarios. The nozzle features an unobstructed internal design, meaning there is a clear channel from inlet to outlet, ensuring smooth liquid flow and greatly reducing the risk of clogging, making it particularly suitable for complex conditions such as wastewater containing impurities. The nozzle's atomization principle is based on its unique spiral structure. After water enters the nozzle, it is broken into multiple tiny droplets by impact with the spiral layered interface, thus forming a layered spray effect. Each spiral nozzle typically has 3 to 4 spray layer interfaces. These interfaces interact to create a uniform atomization effect, significantly improving the coverage and atomization quality. This highly efficient atomization characteristic enables spiral nozzles to effectively remove suspended particles from the air, making them widely used in dust removal, cooling, and humidification. Their unique structural design and atomization mechanism not only ensure effective atomization but also provide excellent anti-clogging capabilities, making them suitable for applications involving wastewater spray dust removal.

[0041] In summary, this utility model's rolling mill dust removal device precisely adjusts the spray pressure using a variable frequency pump, ensuring optimal spraying effect and improving dust removal efficiency. The vertical and horizontal adjustment sleeves allow for independent adjustment of the nozzle's vertical and horizontal positions, enabling precise control of the spray points and ensuring wide and uniform dust removal coverage. By placing the variable frequency pump at the output end of the circulating water tank, the collected rolling mill dust removal wastewater can be reused for spray dust removal, reducing water waste. A water-cutting valve on the inlet pipe controls the water flow, enabling start-up and shutdown of the spray dust removal. In conclusion, this utility model achieves efficient, energy-saving, and environmentally friendly rolling mill dust removal through variable frequency pump adjustment of spray pressure, wastewater recycling, precise nozzle position adjustment, and flexible water flow control. Its simple structure, convenient maintenance, and applicability to various operating conditions result in significant economic and environmental benefits.

[0042] However, those skilled in the art should understand that various improvements can be made to the rolling mill dust removal device provided by this utility model without departing from the scope of this utility model. Therefore, the scope of protection of this utility model should be determined by the contents of the appended claims.

Claims

1. A dust removal device for a rolling mill, characterized in that, It includes a variable frequency pump for adjusting spray pressure, a water cut-off valve, an inlet pipe, nozzles, a vertical adjusting sleeve for adjusting the vertical position of the nozzles, and a horizontal adjusting sleeve for adjusting the lateral position of the nozzles; wherein, The variable frequency pump is installed at the output end of the circulating water tank used to collect dust removal wastewater from the rolling mill, and the water inlet pipe is connected to the output end of the variable frequency pump; the water inlet pipe is connected in sequence to the vertical adjustment sleeve and the horizontal adjustment sleeve, and the nozzle is installed at the end of the horizontal adjustment sleeve; a water cutting valve is installed on the water inlet pipe.

2. The mill dust removal device according to claim 1, characterized in that, A vertically fixed sleeve is movably disposed on the outer periphery of the vertically adjusting sleeve, and a horizontally fixed sleeve is movably disposed on the outer periphery of the horizontally adjusting sleeve. The vertically fixed sleeve and the horizontally fixed sleeve are connected by a reinforcing rod.

3. The mill dust removal device according to claim 2, characterized in that, It also includes, The vertical adjustment sleeve includes a metal flexible hose and a vertical water pipe that are fitted together, and the vertical fixing sleeve is installed on the vertical water pipe.

4. The mill dust removal device according to claim 2, characterized in that, The lateral adjustment sleeve includes a metal flexible hose and a lateral water pipe that are fitted together, and the lateral fixing sleeve is installed on the lateral water pipe.

5. The mill dust removal device according to claim 1, characterized in that, The nozzle is a spiral nozzle with an atomization angle of 60° to 170°.

6. The mill dust removal device according to claim 1, characterized in that, An anti-collision cover is provided on the outside of the nozzle.

7. The dust removal device for rolling mills according to claim 1, characterized in that, It also includes a control module for connecting the water-cutting valve, nozzles, and variable frequency pump.

8. The mill dust removal device according to claim 7, characterized in that, The control module includes a nozzle position adjustment unit, which is used to acquire the smoke volume data at each dust outlet working position of the rolling mill using a smoke concentration monitoring sensor; and to adjust the nozzle position of the dust removal spray according to the acquired smoke volume data at each dust outlet working position.

9. The mill dust removal device according to claim 8, characterized in that, The control module also includes a nozzle pressure adjustment unit, which is used to determine the required spray pressure based on the amount of smoke at the dust outlet working position corresponding to the nozzle position; and to control the water supply pressure by adjusting the speed of the variable frequency pump according to the required spray pressure, so as to spray dust at the dust outlet working position corresponding to the nozzle position.

10. The mill dust removal device according to claim 8, characterized in that, The control module also includes a dust removal point control unit, which is used to detect roll biting signals and roll stripping signals using roll biting sensors and roll stripping sensors at the dust removal work position; when the roll biting sensor detects a roll biting signal, it starts spray dust removal by controlling the water cutting valve and the frequency converter pump; when the roll stripping sensor detects a roll stripping signal, it stops spray dust removal by controlling the water cutting valve and the frequency converter pump.

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