Air volume regulating device

Abstract

This invention provides an airflow regulating device, comprising: a mounting frame; multiple frames spaced vertically and fixedly connected to the mounting frame, each frame having an upward-facing receiving groove capable of holding liquid; multiple partitions corresponding to each frame, each partition having a connecting end and a free end, the connecting end connecting to the bottom of the frame, the free end extending into the receiving groove below and spaced from the bottom wall of the receiving groove, the distance between the partition and the bottom wall of the receiving groove being less than the depth of the receiving groove, the partitions and the receiving groove forming an air duct; and an adjusting component communicating with the receiving groove, capable of injecting liquid into the receiving groove and adjusting the liquid level. Applying the technical solution of this invention can solve the problem of low service life of windshields in the prior art.

Description

Technical Field

[0001] This invention relates to the field of airflow regulation technology, and more specifically, to an airflow regulation device. Background Technology

[0002] Currently, in the mining process, it is necessary to allocate air volume to underground coal mining faces, tunneling faces, and equipment rooms. To ensure the air volume required at each location, an air distribution plan needs to be developed for each location, and air volume needs to be allocated according to the plan. To ensure that air volume is allocated according to the plan, a large number of air volume regulation facilities, such as regulating windows, need to be constructed. By controlling the size of the opening section of the regulating windows, the air volume passing through the windows can be controlled, thus achieving planned air distribution.

[0003] In existing technologies, adjustable ventilation windows typically employ a louvered design. For example, patent application number 202210961751.4 discloses an automatic adjustable ventilation window for coal mines, comprising a main frame, a blade assembly, a linkage assembly, a power drive assembly, and a controller. The main frame has a blade cavity and an equipment cavity, with a position sensor installed within the equipment cavity. The blade assembly is rotatably mounted within the blade cavity via a rotating shaft, with each shaft corresponding to a specific blade. The linkage assembly includes a connecting rod and multiple rocker arms. One end of each rocker arm is fastened to the rotating shaft, while the end of the rocker arm away from the shaft is connected to the connecting rod. The power drive assembly drives the linkage assembly to rotate the blade assembly. Both the position sensor and the power drive assembly are electrically connected to the controller. This solution enables automatic adjustment of the ventilation volume, improving the efficiency, stability, and reliability of the ventilation window adjustment. Furthermore, it allows for the activation or deactivation of the linkage between a single blade and the linkage assembly.

[0004] However, due to the harsh environment in the mine and the high relative humidity in the airflow, the metal structure of the ventilation window will rust, thereby reducing the window's adjustment ability and service life. Summary of the Invention

[0005] This invention provides an airflow regulating device to solve the problem of short service life of windshields in the prior art.

[0006] This invention provides an airflow regulating device, comprising: a mounting frame; multiple frames spaced vertically and fixedly connected to the mounting frame, each frame having an upward-facing receiving groove capable of holding liquid; multiple partitions corresponding to each frame, each partition having a connecting end and a free end, the connecting end connecting to the bottom of the frame, the free end extending into the receiving groove below and spaced from the bottom wall of the receiving groove, the distance between the partition and the bottom wall of the receiving groove being less than the depth of the receiving groove, the partitions and the receiving groove forming an air duct; and an regulating component communicating with the receiving groove, capable of injecting liquid into the receiving groove and adjusting the liquid level; wherein, when the liquid level in the receiving groove is equal to the height of the partition from the bottom wall of the receiving groove, the air duct is closed; when the liquid level in the receiving groove is lower than the height of the partition from the bottom wall of the receiving groove, the air duct is open.

[0007] Furthermore, the regulating component includes an injection component and a drainage component. The first outlet of the injection component is connected to the receiving tank to inject liquid into the receiving tank, and the drainage component discharges the liquid in the receiving tank. The injection component and the drainage component work together to adjust the height of the liquid level in the receiving tank so that the air duct can switch between a closed state and an open state.

[0008] Furthermore, the side wall of the receiving tank has an overflow port and a water inlet, both of which are connected to the receiving tank. The height of the overflow port is lower than or equal to the height of the water inlet, and the height of the overflow port is higher than the height of the free end inside the receiving tank. The overflow port of the upper receiving tank is connected to the water inlet of the lower receiving tank, and the liquid injection assembly is connected to the water inlet of the top receiving tank.

[0009] Furthermore, the liquid injection assembly includes a water tank, a first water injection pipeline, and a first control valve. One end of the first water injection pipeline is connected to the water tank, and the other end of the first water injection pipeline is connected to the opening of the highest receiving tank. The first control valve is installed on the first water injection pipeline to control the flow rate of the liquid.

[0010] Furthermore, the drainage assembly includes multiple drainage units, each of which is provided in the receiving tank. The drainage units are used to drain the liquid in the receiving tank.

[0011] Furthermore, the drainage assembly includes a main drainage pipe, and each drainage unit includes a siphon and a drainage pipe. The drainage pipe is connected to the siphon, and the siphon can discharge the liquid in the receiving tank through the drainage pipe. The drainage pipe is connected to the main drainage pipe.

[0012] Furthermore, the drainage assembly also includes a second water injection pipe. The siphon component includes a cup, a drain pipe, and an exhaust pipe. One end of the second water injection pipe is connected to the water tank, and the other end of the second water injection pipe is connected to the cup to inject liquid into the cup. The opening of the cup is upside down on the bottom of the receiving tank and is connected to the receiving tank. The drain pipe is connected to the bottom wall of the receiving tank, and one end of the drain pipe is located inside the cup, while the other end of the drain pipe is located outside the receiving tank. The drain pipe is used to drain the liquid from the receiving tank. The exhaust pipe is installed on the cup and is connected to the cup. The exhaust pipe can expel air from inside the cup.

[0013] Furthermore, the first end of the exhaust pipe is located at the top of the cup, and the second end of the exhaust pipe is located near the bottom of the receiving tank. When the air duct is closed, the second end of the exhaust pipe is located below the liquid surface.

[0014] Furthermore, the height of the top of the exhaust pipe is higher than the height of the partition from the bottom wall of the receiving tank.

[0015] Furthermore, the air volume regulating device also includes a water level gauge, an air velocity sensor, a flow meter, and a controller. The water level gauge is used to detect the height of the water level in the drain pipe, the flow meter can detect the flow rate of the injection component and the drainage component, and the air velocity sensor is electrically connected to the controller. The controller can control the flow rate of the injection component and the drainage component through the signal from the air velocity sensor.

[0016] By applying the technical solution of this invention, multiple frames and partitions are configured, and the partitions cooperate with the receiving grooves of the frame to form an air duct. Then, the liquid level in the receiving groove is adjusted using an adjustment component. By setting the above structure, when the air volume of the device needs to be at its maximum, the liquid level in the receiving groove only needs to be emptied. When the air volume of the device needs to be at its minimum, the liquid level in the receiving groove is set to be equal to the height of the partition from the bottom wall of the receiving groove. In this way, the air volume of the device can be adjusted by simply adjusting the liquid level, thereby avoiding interference from environmental factors on other structures of the device and helping to extend the service life of the device. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of the air volume regulating device provided in an embodiment of the present invention is shown;

[0019] Figure 2 It shows Figure 1 Enlarged diagram of point A in the middle.

[0020] The above figures include the following reference numerals:

[0021] 10. Mounting bracket;

[0022] 20. Frame; 21. Receiving tank; 22. Overflow outlet; 23. Water inlet;

[0023] 30. Partition;

[0024] 40. First water injection pipeline; 42. First control valve;

[0025] 50. Second water inlet pipe; 51. Cover cup; 52. Drain pipe; 53. Vent pipe;

[0026] 60. Water level gauge; 70. Wind speed sensor; 80. Flow meter; 90. Controller. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figure 1 As shown, this application provides an airflow regulating device, which includes a mounting frame 10, multiple frame bodies 20, multiple partitions 30, and an regulating assembly. The multiple frame bodies 20 are arranged vertically at intervals and are fixedly connected to the mounting frame 10. Each frame body 20 has a receiving groove 21 with its opening facing upwards. The receiving groove 21 is capable of holding liquid. Each partition 30 is arranged correspondingly to a frame body 20, and each partition 30 has a connecting end and a free end that are oppositely arranged. The connecting end is connected to the bottom of the frame body 20, and the free end of the partition 30 extends into the receiving groove 21 below, and is spaced from the bottom wall of the receiving groove 21. The distance from the bottom wall of the receiving tank 21 is less than the depth of the receiving tank 21. The baffle 30 and the receiving tank 21 cooperate to form an air duct. The adjusting component is connected to the receiving tank 21. The adjusting component can inject liquid into the receiving tank 21 and can adjust the height of the liquid level. When the height of the liquid level in the receiving tank 21 is equal to the height of the baffle 30 from the bottom wall of the receiving tank 21, the air duct is in the closed state. When the height of the liquid level in the receiving tank 21 is lower than the height of the baffle 30 from the bottom wall of the receiving tank 21, the air duct is in the open state.

[0029] By applying the technical solution of this invention, multiple frames 20 and partitions 30 are configured, and the partitions 30 cooperate with the receiving groove 21 of the frame 20 to form an air duct. Then, the liquid level in the receiving groove 21 is adjusted using an adjustment component. By setting the above structure, when the air volume of the device needs to be at its maximum, the liquid level in the receiving groove 21 only needs to be emptied. When the air volume of the device needs to be at its minimum, the liquid level in the receiving groove 21 is set to be equal to the height of the partition 30 from the bottom wall of the receiving groove 21. In this way, the air volume of the device can be adjusted by simply adjusting the liquid level, thereby avoiding interference from environmental factors on other structures of the device and helping to extend the service life of the device.

[0030] Furthermore, the regulating assembly includes an injection assembly and a drainage assembly. The first outlet of the injection assembly is connected to the receiving tank 21 to inject liquid into the receiving tank 21. The drainage assembly discharges the liquid from the receiving tank 21. The injection and drainage assemblies work together to adjust the liquid level in the receiving tank 21, allowing the air duct to switch between a closed and open state. With this configuration, when the injection assembly injects liquid into the receiving tank 21, the liquid level in the receiving tank 21 rises accordingly, thus switching the air duct from its maximum open position to a closed state. When the air duct is in the closed state, the injection assembly stops operating, and opening the drainage assembly lowers the liquid level in the receiving tank 21, switching the air duct from a closed state to an open state. The air duct can be regulated using these two components, resulting in high regulation efficiency and immunity to external environmental interference, thus ensuring the stability and efficiency of the device's regulation.

[0031] Specifically, the side wall of the receiving tank 21 has an overflow port 22 and an inlet port 23. Both the overflow port 22 and the inlet port 23 are connected to the receiving tank 21. The height of the overflow port 22 is lower than or equal to the height of the inlet port 23, and the height of the overflow port 22 is higher than the height of the free end inside the receiving tank 21. The overflow port 22 of the upper receiving tank 21 is connected to the inlet port 23 of the lower receiving tank 21. The liquid injection assembly is connected to the inlet port 23 of the top receiving tank 21. During the operation of the device, the liquid injection component can inject liquid into the container 21 through the water injection port 23 of the top container 21. When the liquid level in the top container 21 reaches the height of the overflow port 22, the liquid in the container 21 will flow into the container 21 below. In this way, the liquid can fill multiple containers 21, thus ensuring that each container 21 is filled with liquid. At the same time, since the height of the overflow port 22 is higher than the height of the free end in the container 21, the liquid in the container 21 will not overflow, thus ensuring the normal operation of the device.

[0032] Furthermore, the liquid injection assembly includes a water tank, a first water injection pipe 40, and a first control valve 42. One end of the first water injection pipe 40 is connected to the water tank, and the other end is connected to the opening of the highest receiving tank 21. The first control valve 42 is installed on the first water injection pipe 40 to control the liquid flow rate. With this structure, the water tank can provide water to the first water injection pipe 40, and the first control valve 42 can control the liquid flow rate within the first water injection pipe 40, thus ensuring stable operation of the device.

[0033] Specifically, the drainage assembly includes multiple drainage units, with each receiving tank 21 equipped with a drainage unit for draining the liquid within the receiving tank 21. This structure ensures that the liquid in each receiving tank 21 can be drained simultaneously, thereby improving the drainage efficiency of the device and enhancing the airflow regulation efficiency of the vent.

[0034] Furthermore, the drainage assembly includes a main drainage pipe, and each drainage unit includes a siphon and a drainage pipe. The drainage pipe is connected to the siphon, allowing the siphon to discharge liquid from the receiving tank 21. The drainage pipe is connected to the main drainage pipe. With this structure, the drainage operation of the receiving tank 21 can be completed using the siphon. Since the siphon has advantages such as good drainage effect and high compressive strength, this further improves the drainage efficiency of the device to meet the usage requirements.

[0035] like Figure 2 As shown, the drainage assembly also includes a second water injection pipe 50. The siphon component includes a cup 51, a drain pipe 52, and an exhaust pipe 53. One end of the second water injection pipe 50 is connected to the water tank, and the other end of the second water injection pipe 50 is connected to the cup 51 to inject liquid into the cup 51. The opening of the cup 51 is upside down on the bottom of the receiving groove 21 and is connected to the receiving groove 21. The drain pipe 52 is connected to the bottom wall of the receiving groove 21, and one end of the drain pipe 52 is located inside the cup 51, while the other end of the drain pipe 52 is located outside the receiving groove 21. The drain pipe 52 is used to drain the liquid from the receiving groove 21. The exhaust pipe 53 is installed on the cup 51 and is connected to the cup 51. The exhaust pipe 53 can exhaust the air inside the cup 51.

[0036] Furthermore, the first end of the exhaust pipe 53 is located at the top of the cup 51, and the second end of the exhaust pipe 53 is located near the bottom of the receiving tank 21. When the air duct is closed, the second end of the exhaust pipe 53 is below the liquid surface. With this configuration, when the second water injection pipe 50 injects liquid into the cup 51, the air inside the cup 51 can be discharged from the bottom of the receiving tank 21 through the exhaust pipe 53. This will cause the top of the drain pipe 52 to be submerged in liquid. When the second water injection pipe 50 stops injecting liquid, since the top of the drain pipe 52 is submerged in liquid, the drain pipe 52 transforms into a siphon pipe, which uses siphon action to draw out and discharge the liquid in the receiving tank 21.

[0037] Specifically, the top of the exhaust pipe 53 is higher than the distance between the partition 30 and the bottom wall of the receiving tank 21. This arrangement ensures that the liquid inside the cup 51 will not be discharged through the exhaust pipe 53, thereby ensuring the stability of the device during operation.

[0038] Furthermore, the airflow regulating device also includes a water level gauge 60, an air velocity sensor 70, a flow meter 80, and a controller 90. The water level gauge 60 is used to detect the water level in the drain pipe 52. The flow meter 80 can detect the flow rate of the injection and drainage components. The air velocity sensor 70 is electrically connected to the controller 90, and the controller 90 can control the flow rate of the injection and drainage components through the signal from the air velocity sensor 70. With the above structure, during the operation of the device, the controller 90 can adjust the airflow of the device to meet the user's needs. At the same time, the water level gauge 60, air velocity sensor 70, and flow meter 80 can ensure the accuracy of the airflow adjustment, which helps to improve the device's adjustment accuracy.

[0039] In the embodiments of this application, the multiple frames 20 and multiple partitions 30 should be tilted at a certain angle to one side of the cup 51 during installation. This will allow the cup 51 to be located at a low position, which will facilitate the movement of liquid towards the cup 51. At the same time, in order to ensure the safe operation of the device, monitoring equipment can be installed in front of or behind the frame 20, so that the user can remotely observe the device during operation.

[0040] The controller 90 controls the injection assembly to inject liquid into the receiving tank 21, and monitors the injection flow rate through the flow meter 80. The injection assembly controls the injection speed within a set value to prevent excessive injection flow from causing liquid to overflow from the receiving tank 21. When the top receiving tank 21 is full of liquid, the overflow port can sequentially fill each receiving tank 21 downwards. Each receiving tank 21 and the corresponding baffle 30 sequentially form a water seal. At this time, the ventilation cross-section gradually decreases, and the air volume also gradually decreases from the maximum. When the air volume through the vent reaches the set requirement, the controller 90 can gradually increase the injection rate. When the operation stops, the liquid injection ends. When it is necessary to gradually increase the air volume from the minimum, the controller 90 can control the operation of the drain assembly to inject liquid into the cup 51 through the second water injection pipe 50. At this time, the liquid injection flow rate should be greater than the sum of the liquid discharge at the bottom of the cup 51 and the liquid discharge of the drain pipe 52 to ensure that the water level in the cup 51 rises and the air in the cup 51 is discharged through the exhaust pipe 53. This will cause the top of the drain pipe 52 to be submerged in liquid. After the second water injection pipe 50 is closed, the drain pipe 52 is now equivalent to a siphon pipe, which will draw out and discharge the liquid in the receiving tank 21 through the siphon effect.

[0041] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0042] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0043] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0044] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0045] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An airflow regulating device, characterized in that, The air volume regulating device includes: Mounting bracket (10); Multiple frames (20) are arranged at intervals along the vertical direction. The frames (20) are fixedly connected to the mounting frame (10). Each frame (20) has a receiving groove (21) with the opening facing upward. The receiving groove (21) is capable of storing liquid. Multiple partitions (30) are provided one-to-one with the frame (20). Each partition (30) has a connecting end and a free end that are arranged opposite to each other. The connecting end is connected to the bottom of the frame (20). The free end of the partition (30) extends into the receiving groove (21) below and is spaced from the bottom wall of the receiving groove (21). The distance between the partition (30) and the bottom wall of the receiving groove (21) is less than the depth of the receiving groove (21). The partition (30) and the receiving groove (21) cooperate to form an air duct. An adjustment component is connected to the receiving tank (21), and the adjustment component is capable of injecting liquid into the receiving tank (21) and adjusting the height of the liquid level; When the liquid level in the container (21) is equal to the height of the partition (30) from the bottom wall of the container (21), the air duct is closed; when the liquid level in the container (21) is lower than the height of the partition (30) from the bottom wall of the container (21), the air duct is open.

2. The air volume regulating device according to claim 1, characterized in that, The regulating component includes an injection component and a drainage component. The first outlet of the injection component is connected to the receiving tank (21) to inject liquid into the receiving tank (21). The drainage component discharges the liquid in the receiving tank (21). The injection component and the drainage component work together to adjust the height of the liquid level in the receiving tank (21) so that the air duct switches between the closed state and the open state.

3. The air volume regulating device according to claim 2, characterized in that, The side wall of the receiving tank (21) has an overflow port (22) and a water inlet (23). The overflow port (22) and the water inlet (23) are both connected to the receiving tank (21). The height of the overflow port (22) is lower than or equal to the height of the water inlet (23), and the height of the overflow port (22) is higher than the height of the free end of the partition (30) in the receiving tank (21). The overflow port (22) of the upper receiving tank (21) is connected to the water inlet (23) of the lower receiving tank (21). The liquid injection assembly is connected to the water inlet (23) of the top receiving tank (21).

4. The air volume regulating device according to claim 2, characterized in that, The liquid injection assembly includes a water tank, a first water injection pipe (40) and a first control valve (42). One end of the first water injection pipe (40) is connected to the water tank, and the other end of the first water injection pipe (40) is connected to the opening of the highest receiving tank (21). The first control valve (42) is installed on the first water injection pipe (40) to control the flow rate of the liquid.

5. The air volume regulating device according to claim 4, characterized in that, The drainage assembly includes multiple drainage units, and each of the receiving tanks (21) is provided with a drainage unit, which is used to drain the liquid in the receiving tanks (21).

6. The air volume regulating device according to claim 5, characterized in that, The drainage assembly includes a main drainage pipe, and each drainage unit includes a siphon and a drainage pipe. The drainage pipe is connected to the siphon, and the siphon can discharge the liquid in the receiving tank (21) through the drainage pipe. The drainage pipe is connected to the main drainage pipe.

7. The air volume regulating device according to claim 6, characterized in that, The drainage assembly further includes a second water injection pipe (50). The siphon component includes a cup (51), a drain pipe (52), and an exhaust pipe (53). One end of the second water injection pipe (50) is connected to the water tank, and the other end of the second water injection pipe (50) is connected to the cup (51) to inject liquid into the cup (51). The opening of the cup (51) is upside down at the bottom of the receiving groove (21) and is connected to the receiving groove (21). The drain pipe... (52) is connected to the bottom wall of the receiving tank (21), and one end of the drain pipe (52) is located inside the cup (51), and the other end of the drain pipe (52) is located outside the receiving tank (21). The drain pipe (52) is used to drain the liquid in the receiving tank (21). The exhaust pipe (53) is set on the cup (51) and communicates with the cup (51). The exhaust pipe (53) can exhaust the air in the cup (51).

8. The air volume regulating device according to claim 7, characterized in that, The first end of the exhaust pipe (53) is located at the top of the cup (51), and the second end of the exhaust pipe (53) is located near the bottom of the receiving groove (21). When the air duct is in the closed state, the second end of the exhaust pipe (53) is located below the liquid surface.

9. The air volume regulating device according to claim 7, characterized in that, The height of the top of the exhaust pipe (53) is higher than the height of the partition (30) from the bottom wall of the receiving groove (21).

10. The air volume regulating device according to claim 7, characterized in that, The air volume regulating device also includes a water level gauge (60), a wind speed sensor (70), a flow meter (80), and a controller (90). The water level gauge (60) is used to detect the height of the water level in the drain pipe (52). The flow meter (80) can detect the flow rate of the injection component and the drainage component. The wind speed sensor (70) is electrically connected to the controller (90). The controller (90) can control the flow rate of the injection component and the drainage component through the signal from the wind speed sensor (70).

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