A circulating fan for a closed cooling tower

Abstract

The utility model discloses a circulating fan for a closed cooling tower, which belongs to the technical field of fans, and includes a base plate; a motor is fixedly mounted on the base plate, a first support frame is rotatably mounted on the base plate, and the output end of the motor is fixedly connected to the middle part of the first support frame; a push rod is fixedly mounted on the middle part of the first support frame, and the second support frame is slidably connected to the first support frame; the output end of the push rod is fixedly connected to the middle part of the second support frame; an adjustment component is installed on the second support frame; a mounting component is fixedly mounted on the end of the fan blade; the middle part of the mounting component is rotatably mounted on the first support frame, and the lower side of the mounting component is mounted on the adjustment component. In the above manner, the fan blade is mounted on the first support frame through the mounting component, and the fan blade adjustment component is mounted on the second support frame at the same time; the push rod adjusts the overall height between the first support frame and the second support frame, and then adjusts the installation angle of the fan blade through the adjustment component, and synchronously adjusts the installation angle of all the fan blades.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a circulating fan for a closed cooling tower. Background Art

[0002] The cooling tower fan uses a special axial flow fan for cooling towers. The fan blades have high efficiency, large flow and appropriate wind pressure. At the same time, the fans used in cooling towers are usually large in size. In order to ensure the stability of their operation and avoid violent vibrations during the operation of the fan, the fan blades are usually installed on spokes or some support frames.

[0003] For example, Chinese patent CN218235619U discloses a high-altitude cooling tower fan that can prevent vibration. The fan is provided with a plurality of soft connection components. When the fan vibrates as a whole, the propagation path of the overall vibration is cut off by adding a soft connection to the hard connection, thereby avoiding the vibration from spreading and keeping the fan stable.

[0004] However, when the cooling tower fan is in operation, the installation angle of its fan blades needs to remain consistent, and the larger the fan blade installation angle, the greater the air volume and the smaller the wind pressure. In actual use, lowering the fan blade installation angle can be used as one of the measures to prevent the cooling tower from freezing in winter, but it is difficult to change the fan blade installation angle with this device.

[0005] Based on this, the utility model designs a circulating fan for a closed cooling tower to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a circulating fan for a closed cooling tower.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A circulating fan for a closed cooling tower comprises a base plate;

[0009] A motor is fixedly mounted on the base plate, the first support frame is rotatably mounted on the base plate, and the output end of the motor is fixedly connected to the middle part of the first support frame; a push rod is fixedly mounted on the middle part of the first support frame, and the second support frame is slidably connected to the first support frame; the output end of the push rod is fixedly connected to the middle part of the second support frame; an adjustment component for adjusting the installation angle of the fan blade is installed on the second support frame;

[0010] The end of the fan blade is fixedly mounted with a mounting assembly; the middle part of the mounting assembly is rotatably mounted on the first support frame, and the lower side of the mounting assembly is mounted on the adjustment assembly.

[0011] Furthermore, the first support frame includes a first mounting frame, a first mounting plate and a limiting groove. The first mounting frame and the first mounting plate are rotatably mounted on the base plate. The outer side of the first mounting frame is fixedly connected to the first mounting plate. The outer side of the first mounting plate is provided with a plurality of limiting grooves. The plurality of limiting grooves are evenly distributed in a circular array at equal intervals on the first mounting plate. A push rod is fixedly mounted in the middle of the first mounting frame.

[0012] Furthermore, the first support frame also includes a mounting groove, and a plurality of mounting grooves are provided on the first mounting plate, and the plurality of mounting grooves are evenly distributed in a circular array on the first mounting plate at equal intervals.

[0013] Furthermore, the second support frame includes a second mounting frame, a second mounting plate and a slider, the middle part of the second mounting frame is fixedly mounted on the output end of the push rod, the second mounting plate is fixedly mounted on the outer side of the second mounting frame, and a plurality of sliders are fixedly mounted on the inner side of the second mounting plate, and the sliders are slidably connected with the limit grooves.

[0014] Furthermore, the mounting assembly includes a mounting block and an insertion rod, the mounting block is fixedly mounted on the fan blade, the insertion rod is fixedly mounted in the middle of the mounting block, and the insertion rod is rotatably connected to the mounting groove.

[0015] Furthermore, the mounting assembly also includes an adjusting block, and the adjusting block is fixedly mounted on the lower side of the mounting block.

[0016] Furthermore, the adjustment component includes a slide groove, a slip ring and a connecting component. An annular slide groove is opened on the upper side of the second mounting plate. The slip ring is slidingly connected to the slide groove inside the second mounting plate. The connecting component is installed on the slide groove and the slip ring.

[0017] Furthermore, the connecting component includes a notch and a connecting groove, a plurality of notches are provided on the slide groove, and the plurality of notches are evenly distributed in a circular array on the slide groove at equal intervals; a connecting groove is provided at the notch located on the slide groove; and the connecting groove is plugged into the adjusting block.

[0018] The utility model has the following technical effects:

[0019] 1. The utility model installs a plurality of fan blades on a first support frame through a mounting assembly, and installs the fan blades on a second support frame through an adjusting assembly, so that the plurality of fan blades can be quickly and accurately installed on the device, and the mounting angles of the plurality of fan blades are kept consistent through the adjusting assembly, so as to avoid severe vibration caused by inconsistent mounting angles of the fan blades during operation, thereby affecting the operation of the device; the device is kept stable during operation through the support of the first support frame and the second support frame; during operation, the motor drives the plurality of fan blades to rotate through the first support frame and the second support frame; at the same time, the mounting angle of the fan blades affects the air volume and air pressure, and during operation, the overall height between the first support frame and the second support frame can be adjusted by a push rod, and then the mounting angle of the fan blades can be adjusted by the adjusting assembly; thus, in actual use, the mounting angles of all fan blades can be adjusted according to the operating status of the cooling tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A three-dimensional circulating fan for a closed cooling tower according to the utility model Figure 1 ;

[0022] Figure 2 It is a front view of a circulating fan for a closed cooling tower of the utility model;

[0023] Figure 3 is a schematic diagram of a first mounting frame and its connection structure;

[0024] Figure 4 An exploded view of the first mounting frame and its connection structure;

[0025] Figure 5 Schematic diagram of fan blades and their connection structure.

[0026] The numbers in the figure represent:

[0027] 1. Base plate; 2. Motor; 3. First support frame; 31. First mounting frame; 32. First mounting plate; 33. Limiting groove; 34. Mounting groove; 4. Second support frame; 41. Second mounting frame; 42. Second mounting plate; 43. Slider; 5. Push rod; 6. Fan blade; 7. Mounting assembly; 71. Mounting block; 72. Insert rod; 73. Adjustment block; 8. Adjustment assembly; 81. Slide groove; 82. Slip ring; 83. Notch; 84. Connecting groove. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The utility model is further described below in conjunction with embodiments.

[0030] The “left”, “right”, “front”, “back”, “up”, and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0031] Example 1

[0032] Please refer to the instruction manual Figure 1-3 , a circulating fan for a closed cooling tower, comprising a base plate 1;

[0033] The motor 2 is fixedly mounted on the base plate 1, the first support frame 3 is rotatably mounted on the base plate 1, and the output end of the motor 2 is fixedly connected to the middle of the first support frame 3; a push rod 5 is fixedly mounted on the middle of the first support frame 3, and the second support frame 4 is slidably connected to the first support frame 3; the output end of the push rod 5 is fixedly connected to the middle of the second support frame 4; an adjustment component 8 for adjusting the installation angle of the fan blade 6 is installed on the second support frame 4;

[0034] The end of the fan blade 6 is fixedly mounted with a mounting assembly 7 ; the middle portion of the mounting assembly 7 is rotatably mounted on the first support frame 3 , and the lower side of the mounting assembly 7 is mounted on the adjustment assembly 8 .

[0035] In this embodiment, when the circulating fan for the closed cooling tower is in normal use, the plurality of fan blades 6 are installed on the first support frame 3 through the installation component 7, and the fan blades 6 are installed on the second support frame 4 through the adjustment component 8, so that the plurality of fan blades 6 can be quickly and accurately installed on the device, and the installation angles of the plurality of fan blades 6 are kept consistent through the adjustment component 8 to avoid severe vibration caused by inconsistent installation angles of the fan blades 6 during operation, thereby affecting the operation of the device; during operation, the motor 2 drives the plurality of fan blades 6 to rotate through the first support frame 3 and the second support frame 4; at the same time, the installation angle of the fan blades 6 affects the air volume and air pressure, and during operation, the overall height between the first support frame 3 and the second support frame 4 can be adjusted by the push rod 5, and then the installation angle of the fan blades 6 can be adjusted by the adjustment component 8; thus, in actual use, the installation angles of all the fan blades 6 can be adjusted according to the operating state of the cooling tower, and at the same time, lowering the installation angle of the fan blades 6 can be used as one of the measures to prevent freezing in winter.

[0036] Example 2

[0037] like Figure 1-5 As shown, as a preferred embodiment of the utility model, the first support frame 3 includes a first mounting frame 31, a first mounting plate 32 and a limiting groove 33. The first mounting frame 31 and the first mounting plate 32 are rotatably mounted on the base plate 1. The outer side of the first mounting frame 31 is fixedly connected to the first mounting plate 32. The outer side of the first mounting plate 32 is provided with a plurality of limiting grooves 33. The plurality of limiting grooves 33 are evenly distributed in a circular array on the first mounting plate 32 at equal intervals. A push rod 5 is fixedly mounted in the middle of the first mounting frame 31.

[0038] The first support frame 3 further includes a mounting groove 34. A plurality of mounting grooves 34 are provided on the first mounting plate 32. The plurality of mounting grooves 34 are evenly distributed in a circular array with equal spacing on the first mounting plate 32.

[0039] The second support frame 4 includes a second mounting frame 41, a second mounting plate 42 and a slider 43. The middle portion of the second mounting frame 41 is fixedly mounted on the output end of the push rod 5. The second mounting plate 42 is fixedly mounted on the outer side of the second mounting frame 41. A plurality of sliders 43 are fixedly mounted on the inner side of the second mounting plate 42. The sliders 43 are limitedly slidably connected with the limiting grooves 33.

[0040] The mounting assembly 7 includes a mounting block 71 and an insertion rod 72. The mounting block 71 is fixedly mounted on the fan blade 6. The insertion rod 72 is fixedly mounted in the middle of the mounting block 71. The insertion rod 72 is rotatably connected to the mounting groove 34.

[0041] The mounting assembly 7 further includes an adjusting block 73, and the adjusting block 73 is fixedly mounted on the lower side of the mounting block 71.

[0042] The adjustment assembly 8 includes a slide groove 81, a slip ring 82 and a connecting assembly. An annular slide groove 81 is provided on the upper side of the second mounting plate 42. The slip ring 82 is connected to the slide groove 81 in a limited sliding manner inside the second mounting plate 42. The connecting assembly is installed on the slide groove 81 and the slip ring 82.

[0043] The connecting assembly includes a notch 83 and a connecting groove 84. The slide groove 81 is provided with a plurality of notches 83, and the plurality of notches 83 are evenly distributed in a circular array at equal intervals on the slide groove 81. The slip ring 82 is provided with a connecting groove 84 at the notch 83 located on the slide groove 81. The connecting groove 84 is plugged into the adjustment block 73.

[0044] In this embodiment, when the first support frame 3, the second support frame 4, the mounting assembly 7 and the adjusting assembly 8 are working normally, the insertion rod 72 on the fan blade 6 is rotatably mounted in the mounting groove 34 on the first mounting plate 32 through the bearing, and the adjusting block 73 on the fan blade 6 is inserted into the connecting groove 84 on the second mounting plate 42, thereby realizing the installation of the fan blade 6 and making the installation angles of multiple fan blades 6 consistent; the push rod 5 drives the second mounting plate 42 to move through the second mounting frame 41, thereby driving the slider 43 to move, and the slider 43 moves vertically under the limiting action of the limiting groove 33 , so that the second mounting plate 42 maintains vertical movement; the slide groove 81 on the second mounting plate 42 drives the slip ring 82 to move, thereby changing the distance between the slip ring 82 and the first mounting plate 32, and then changing the vertical distance between the multiple connecting grooves 84 on the slip ring 82 and the corresponding mounting grooves 34; in this process, the slip ring 82 is driven by the adjustment blocks 73 in the multiple connecting grooves 84 to slide in the slide groove 81, thereby changing the angle of the mounting block 71 through the adjustment block 73 and the connecting groove 84, and then changing the angle of the fan blade 6; thereby achieving the simultaneous adjustment of the installation angles of all the fan blades 6.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A circulating fan for a closed cooling tower, comprising a base plate (1), characterized in that: The base plate (1) is fixedly mounted with a motor (2); the first support frame (3) is rotatably mounted on the base plate (1), and the output end of the motor (2) is fixedly connected to the middle of the first support frame (3); a push rod (5) is fixedly mounted to the middle of the first support frame (3); the second support frame (4) is slidably connected to the first support frame (3); the output end of the push rod (5) is fixedly connected to the middle of the second support frame (4); an adjustment component (8) for adjusting the installation angle of the fan blade (6) is mounted on the second support frame (4); A mounting assembly (7) is fixedly mounted on the end of the fan blade (6); the middle portion of the mounting assembly (7) is rotatably mounted on the first support frame (3), and the lower side of the mounting assembly (7) is mounted on the adjustment assembly (8).

2. The circulating fan for a closed cooling tower according to claim 1, characterized in that: The first support frame (3) comprises a first mounting frame (31), a first mounting plate (32) and a limiting groove (33); the first mounting frame (31) and the first mounting plate (32) are rotatably mounted on the base plate (1); the outer side of the first mounting frame (31) is fixedly connected to the first mounting plate (32); a plurality of limiting grooves (33) are provided on the outer side of the first mounting plate (32); the plurality of limiting grooves (33) are evenly distributed in a circular array at equal intervals on the first mounting plate (32); a push rod (5) is fixedly mounted in the middle of the first mounting frame (31).

3. The circulating fan for a closed cooling tower according to claim 2, characterized in that: The first support frame (3) further comprises a mounting groove (34), a plurality of mounting grooves (34) are provided on the first mounting plate (32), and the plurality of mounting grooves (34) are evenly distributed in a circular array at equal intervals on the first mounting plate (32).

4. The circulating fan for a closed cooling tower according to claim 3, characterized in that: The second support frame (4) comprises a second mounting frame (41), a second mounting plate (42) and a sliding block (43); the middle portion of the second mounting frame (41) is fixedly mounted on the output end of the push rod (5); the second mounting plate (42) is fixedly mounted on the outer side of the second mounting frame (41); a plurality of sliding blocks (43) are fixedly mounted on the inner side of the second mounting plate (42); and the sliding blocks (43) are slidably connected to the limiting grooves (33).

5. The circulating fan for a closed cooling tower according to claim 4, characterized in that: The mounting assembly (7) comprises a mounting block (71) and an insertion rod (72); the mounting block (71) is fixedly mounted on the fan blade (6); the insertion rod (72) is fixedly mounted in the middle of the mounting block (71); and the insertion rod (72) is rotatably connected to the mounting groove (34).

6. The circulating fan for a closed cooling tower according to claim 5, characterized in that: The mounting assembly (7) further comprises an adjusting block (73), and the adjusting block (73) is fixedly mounted on the lower side of the mounting block (71).

7. The circulating fan for a closed cooling tower according to claim 6, characterized in that: The adjustment assembly (8) comprises a slide groove (81), a slip ring (82) and a connection assembly. An annular slide groove (81) is provided on the upper side of the second mounting plate (42). The slip ring (82) is connected to the slide groove (81) in a limited sliding manner inside the second mounting plate (42). The connection assembly is installed on the slide groove (81) and the slip ring (82).

8. The circulating fan for a closed cooling tower according to claim 7, characterized in that: The connection assembly comprises a notch (83) and a connection groove (84); a plurality of notches (83) are provided on the slide groove (81); the plurality of notches (83) are evenly distributed on the slide groove (81) in a circular array at equal intervals; the slip ring (82) is provided with a connection groove (84) at the notch (83) located on the slide groove (81); and the connection groove (84) is plugged into the adjustment block (73).

Images