Louver

Abstract

The present disclosure relates to a shutter comprising: a frame; the blades are arranged in the frame body, the blades extend in the same direction, and the two ends of each blade are rotatably connected with the frame body so that the shutter can be opened and closed; the driving part is connected with each blade and is used for driving the blade to rotate along the axis; and the vibration reduction part can be in contact with the blade when the blade rotates to a preset angle so as to reduce vibration of the blade. The multiple blades are rotatably arranged in the frame body, the driving part is connected with each blade to drive the blade to rotate so as to control opening and closing of the shutter, the shutter is further provided with the vibration reduction part, and the vibration reduction part can make contact with the blades when the blades rotate to the preset angle so as to provide supporting points for the blades to reduce vibration of the blades.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cooling tower louvers, and in particular, to a louver. Background Art

[0002] During the operation of the air-cooling tower, the louver blades usually vibrate. Due to the strong winds in the north in winter, it is found in the actual production process that the blades will be affected by the wind, especially when the blade opening and closing angle is small, the wind resistance is large, causing the louver blades to self-excited vibrate, which creates many practical difficulties for the operation and maintenance of the unit. The self-excited low-frequency vibration of the cooling tower louver can cause the fasteners to loosen and fall off, and even the louver nuts to loosen, thereby destroying the normal operation of the louver and making the adjustment and control part of the cooling air volume ineffective, affecting the safe and economical operation of the unit. Utility Model Content

[0003] The purpose of the present disclosure is to provide a blind that can solve the above technical problems.

[0004] In order to achieve the above-mentioned purpose, the present disclosure provides a shutter, comprising: a frame; blades, which are arranged in the frame, and the blades are provided in plurality and extend in the same direction, and both ends of the blades are rotatably connected to the frame to open and close the shutter; a driving member, which is connected to each of the blades and is used to drive the blades to rotate along an axis; and a vibration damping member, which can contact the blades when the blades rotate to a preset angle to reduce the vibration of the blades.

[0005] Optionally, the shutter further includes a connecting member, the vibration damping member is constructed as a vibration damping rod, the vibration damping rod is arranged perpendicular to the extension direction of the blades and the two ends of the vibration damping rod respectively extend to the two outermost blades, and the vibration damping rod is connected to the blades via the connecting member.

[0006] Optionally, the connecting member is arranged along the extension direction of the vibration damping rod and at least two connecting members are provided, and each connecting member is connected to one of the blades respectively.

[0007] Optionally, one end of the connecting member is detachably connected to the blade, and the other end is rotatably connected to the vibration damping rod.

[0008] Optionally, the connecting member includes a locking block, a fixing pin and a connecting rod, the locking block is engaged with the edge of the blade and fastened by the fixing pin, one end of the connecting rod is connected to the end of the locking block away from the blade, and the other end is rotatably connected to the damping rod.

[0009] Optionally, the angle between the plane where the blade and the frame are located is β, and when 0°<β≤35°, the vibration damper is in contact with the blade; when β>35°, the vibration damper is separated from the blade.

[0010] Optionally, the distance from the center line of the blade on which the connecting member is installed to the side close to the vibration damping member is L S , the distance from the center line of the blade without the connecting member to the side close to the vibration damping member is L X , and L S <L X , so that when 0<β≤35°, the vibration damper can contact the blade in the vertical direction; when β>35°, the connecting member extends beyond the blade on which the connecting member is not installed to enable the vibration damper to be separated from the blade.

[0011] Optionally, the driving member is configured as a pull rod, which is connected to each of the blades via a linkage member, is disposed perpendicular to an extension direction of the blades and can move along its extension direction to drive the blades to rotate along an axis.

[0012] Optionally, each of the blades is connected to the linkage member, and the linkage member is constructed as a linkage rod, one end of the linkage rod is fixedly connected to the edge of the blade, and the other end is rotatably connected to the pull rod.

[0013] Optionally, the shutter is used for installation on a cooling tower.

[0014] Through the above technical solution, multiple blades are rotatably arranged in the frame, and a driving member is connected to each blade to drive the blade to rotate, thereby controlling the opening and closing of the blinds. A vibration damping member is also provided, which can contact the blade when the blade rotates to a preset angle, providing a support point for the blade to reduce the vibration of the blade.

[0015] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0017] Figure 1 is a schematic diagram of the structure of the shutter in the present disclosure;

[0018] Figure 2 is a side view of the shutter of the present disclosure when the blades are opened 30°, wherein the driving member is not shown;

[0019] Figure 3is a side view of the shutter of the present disclosure when the blades are opened 90°, wherein the drive member is not shown;

[0020] Figure 4 It is a schematic diagram of the connection between the driving member and the blade in the present disclosure.

[0021] Description of Reference Numerals

[0022] 1. Frame; 2. Blades; 3. Driving member; 4. Vibration damping member; 5. Connecting member; 51. Locking block; 52. Fixing pin; 53. Connecting rod; 6. Rotating shaft; 7. Linkage member. DETAILED DESCRIPTION

[0023] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0024] In the present disclosure, unless otherwise specified, the directional words used, such as "inside" and "outside", refer to the inside and outside relative to the outline of the component or structure itself. In addition, in the description with reference to the drawings, the same reference numerals in different drawings represent the same elements.

[0025] The present disclosure provides a shutter, comprising: a frame 1; blades 2, which are arranged in the frame 1, and a plurality of blades 2 are provided and extend in the same direction, and both ends of the blades 2 are rotatably connected to the frame 1 to open and close the shutter; a driving member 3, which is connected to each blade 2 and is used to drive the blade 2 to rotate along an axis; and a vibration damping member 4, which can contact the blade 2 when the blade 2 rotates to a preset angle to reduce the vibration of the blade 2.

[0026] Through the above technical solution, multiple blades 2 can be rotatably arranged in the frame 1. For example, a rotating shaft 6 rotatably connected to the frame 1 can be arranged at both ends of the blade 2. The driving member 3 is connected to each blade 2 to drive the blade 2 to rotate, thereby controlling the opening and closing of the blinds. A vibration damping member 4 is also provided. The vibration damping member 4 can contact the blade 2 when the blade 2 rotates to a preset angle, providing a support point for the blade 2 to reduce the vibration of the blade 2.

[0027] As an optional implementation, Figure 1-3 As shown, the shutter also includes a connecting member 5, and the vibration damping member 4 is constructed as a vibration damping rod. The vibration damping rod is arranged perpendicular to the extension direction of the blade 2, and the two ends of the vibration damping rod respectively extend to the two outermost blades 2, so that the vibration damping rod can contact all the blades 2 to provide support points for all the blades 2. The vibration damping rod is connected to the blade 2 through the connecting member 5. The blade 2 without the connecting member 5 is in direct contact with the vibration damping rod, and the blade 2 with the connecting member 5 is in contact with the vibration damping rod through the connecting member 5, which can also achieve the vibration reduction effect.

[0028] Optionally, the connecting members 5 are arranged along the extension direction of the vibration damping rod and at least two connecting members 5 are provided, each connecting member 5 is respectively connected to a blade 2, and the vibration damping rod is fixed to the blade 2 through at least two connecting members 5. For example, two connecting members 5 are respectively arranged on the two outermost blades 2. Of course, multiple connecting members 5 can also be provided, such as three, four, etc., and the vibration damping member 4 can be provided with one or multiple ones can be arranged side by side, which can be determined according to the size of the blinds and the number of blades 2.

[0029] Optionally, one end of the connecting member 5 is detachably connected to the blade 2, that is, the shock-absorbing rod is detachably arranged. There is no need to change the structure of the original shutter. The shock-absorbing rod can be directly installed according to needs. It is also convenient for replacement when damaged. The other end is rotatably connected to the shock-absorbing rod so that the shock-absorbing rod moves in a direction closer to or away from the blade 2 while the blade 2 rotates.

[0030] The connecting member 5 can be constructed as any suitable structure, wherein, exemplarily, in the present disclosure, the connecting member 5 includes a locking block 51, a fixing pin 52 and a connecting rod 53. The locking block 51 is engaged with the edge of the blade 2 and is fastened by the fixing pin 52. A slot is provided on one side of the locking block 51, and the slot is plugged into the edge of the blade 2. A fixing hole is provided on one side of the slot. The fixing pin 52 is inserted into the fixing hole and contacts the blade 2 to fix the locking block 51. One end of the connecting rod 53 is connected to the end of the locking block 51 away from the blade 2, and the other end is rotatably connected to the vibration damping rod.

[0031] As an optional implementation, Figure 2-3 As shown, the angle between the blade 2 and the plane where the frame 1 is located is β, when 0°<β≤35°, the vibration damper 4 is in contact with the blade 2; when β>35°, the vibration damper 4 is separated from the blade 2. As the blade 2 rotates, the angle of the blade 2 becomes larger and larger, and the vibration damper 4 is gradually driven by the connecting member 5 to move away from the blade 2. Similarly, when the blade 2 gradually changes from a large angle to a small angle, the vibration damper 4 gradually approaches the blade 2 to fit with the blade 2. The angle between the blade 2 and the plane where the frame 1 is located includes both the angle of the blade 2 when it is opened and the angle between the blade 2 and the plane where the frame 1 is located when it is closed, that is, 0°<β≤35° and 145°≤β<180°, β>35° means 35°<β<145°, for example Figure 2 This is a schematic diagram when blade 2 is opened 30°. Figure 3 This is a schematic diagram when the blade 2 is opened 90°. When the blade 2 is opened at a smaller angle, the wind resistance is larger, which will cause the blade 2 to vibrate. At this time, the vibration damper 4 is in contact with the blade 2; when the blade 2 is opened at a larger angle, the wind resistance is smaller, the blade 2 will not vibrate or will only vibrate slightly. At this time, there is no need for the vibration damper 4 to contact the blade 2, and the vibration damper 4 is separated from the blade 2.

[0032] Optionally, the distance from the center line of the blade 2 with the connecting member 5 installed to the side close to the vibration damping member 4 is L S The distance from the center line of the blade 2 without the connecting member 5 to the side close to the vibration damping member 4 is L X , and L S <L X , so that when 0°<β≤35°, the vibration damping member 4 can contact the blade 2 in the vertical direction; when β>35°, the connecting member 5 extends out of the blade 2 where the connecting member 5 is not installed to make the vibration damping member 4 separate from the blade 2. The reason for setting L S <L X , because the connecting member 5 will occupy a certain space. If the width of the blades 2 is the same, the vibration damper 4 will not be able to contact the blade 2 without the connecting member 5 installed; when β>35°, the connecting member 5 separates the vibration damper 4 from the blade 2. Under large-angle working conditions, the edge of the blade 2 is away from the vibration damping rod, ensuring that the vibration damping rod does not affect the normal operation of the blade 2, thereby achieving a working motion state of fitting to the blade 2 at a small angle and being away from the blade 2 at a large angle.

[0033] As an optional implementation, Figure 4 As shown, the driving member 3 is constructed as a pull rod, which is connected to each blade 2 through a linkage member 7. The pull rod can also play a certain vibration reduction role. The pull rod is arranged perpendicular to the extension direction of the blade 2 and can move along its extension direction to drive the blade 2 to rotate along the axis. The pull rod contacts each blade 2 through the linkage member 7 to drive the blade 2 to rotate. In other embodiments, the driving member 3 can also be constructed as a pull rope, and a gear is set on the rotating shaft 6 at the same end of each blade 2, and two adjacent gears are meshed with each other. The pull rope only needs to be connected to one of the gears to drive all the gears to rotate.

[0034] Optionally, each blade 2 is connected with a linkage member 7, and the linkage member 7 is constructed as a linkage rod, one end of the linkage rod is fixedly connected to the edge of the blade 2, and the other end is rotatably connected to the pull rod, and the pull rod and the linkage rod form a linkage mechanism to drive the blade 2 to rotate. Of course, since the distance from the center line of the blade 2 installed with the connecting member 5 to the side close to the vibration damping member 4 is short, the length of the linkage rod connected to the blade 2 is greater than that of other linkage rods, so that the pull rod can be set parallel to the frame. In other embodiments, the pull rod can also be constructed as a rack, and a gear is set on the rotating shaft 6 at the same end of each blade 2. The rack is set inside the frame and meshes with the gear. Pulling the rack moves the rack along its extension direction to drive each blade 2 to rotate.

[0035] As an optional embodiment, the shutter is used to be installed on a cooling tower, such as an air cooling tower. By controlling the opening angle of the blade 2, it can be used to adjust the air volume to control the process parameters. It can also resist special meteorological interference (such as heavy rain) or be used in hot air recirculation operation. The shutter disclosed in the present invention is provided with a vibration damping member 4, which can contact the blade 2 when the blade 2 rotates to a preset angle, providing a support point for the blade 2 to reduce the vibration of the blade 2, thereby allowing the unit to operate safely and economically.

[0036] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0037] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0038] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A shutter, characterized in that: include: Frame; A blade is disposed in the frame, wherein a plurality of blades are provided and the plurality of blades extend in the same direction, and both ends of the blade are rotatably connected to the frame to open and close the shutter; A driving member, the driving member is connected to each of the blades and is used to drive the blades to rotate along the axis; as well as A vibration damping member is configured to contact the blade when the blade rotates to a preset angle to reduce vibration of the blade.

2. The shutter according to claim 1, characterized in that: The shutter also includes a connecting member, and the vibration damping member is configured as a vibration damping rod, which is arranged perpendicular to the extension direction of the blades and has two ends extending to the two outermost blades respectively, and the vibration damping rod is connected to the blades via the connecting member.

3. The shutter according to claim 2, characterized in that: The connecting member is arranged along the extension direction of the vibration damping rod and at least two connecting members are provided, and each connecting member is respectively connected to one of the blades.

4. The shutter according to claim 2, characterized in that: One end of the connecting piece is detachably connected to the blade, and the other end is rotatably connected to the vibration damping rod.

5. The shutter according to claim 4, characterized in that: The connecting member includes a locking block, a fixing pin and a connecting rod. The locking block is engaged with the edge of the blade and fastened by the fixing pin. One end of the connecting rod is connected to an end of the locking block away from the blade, and the other end is rotatably connected to the vibration damping rod.

6. The shutter according to claim 2, characterized in that: The angle between the planes where the blade and the frame are located is β. When 0°<β≤35°, the vibration damping component is in contact with the blade; when β>35°, the vibration damping component is separated from the blade.

7. The shutter according to claim 6, characterized in that: The distance from the center line of the blade where the connecting member is installed to the side close to the vibration damping member is L. S , the distance from the center line of the blade without the connecting member to the side close to the vibration damping member is L X , and L S <L X , so that when 0<β≤35°, the vibration damper can contact the blade in the vertical direction; when β>35°, the connecting member extends beyond the blade on which the connecting member is not installed to enable the vibration damper to be separated from the blade.

8. The shutter according to claim 1, characterized in that: The driving member is configured as a pull rod, which is connected to each of the blades via a linkage member. The pull rod is arranged perpendicular to the extension direction of the blades and can move along the extension direction to drive the blades to rotate along the axis.

9. The shutter according to claim 8, characterized in that: Each of the blades is connected with the linkage member, which is constructed as a linkage rod, one end of which is fixedly connected to the edge of the blade, and the other end of which is rotatably connected to the pull rod.

10. The shutter according to any one of claims 1 to 9, characterized in that: The shutter is used for being installed on a cooling tower.

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