Durable cooling tower fan

Abstract

The invention discloses a durable cooling tower fan, and relates to the technical field of cooling tower fans. A fixing mechanism is arranged in the center tray frame, the center tray frame is fixedly connected with the fan blade body through the fixing mechanism, the fan blade body can be detached from the center tray frame through the fixing mechanism, a protection sheet is arranged on the outer side of the fan blade body, a limiting frame is arranged at the bottom of the center tray frame, and a driving motor is arranged in the top of the limiting frame. And the driving end of the driving motor is connected with the central tray rack. According to the cooling tower fan, the protection sheets are arranged on the outer side of the fan blade body, the protection sheets can fix the outer side of the fan blade body, the weakest position of the fan blade is reinforced, the overall performance of the cooling tower fan is improved, and therefore the problem that the surface of the fan blade body is damaged by floating rust can be prevented, and the protection performance of the fan in use is improved; and through the arrangement of the fixing mechanism, the center tray frame can be firmer when fixing the eight sets of fan blade bodies.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of cooling tower fans, in particular to a durable cooling tower fan. BACKGROUND

[0002] The durable cooling tower fan refers to a fan capable of long-term stable operation in the working environment of a cooling tower, and has a long service life and good reliability. The key equipment of a circulating cooling water system is a cooling tower fan, which is a device for heat exchange between water and air, mainly including a fan, a motor and a reduction gearbox. However, the existing cooling tower fan has some shortcomings, for example:

[0003] The fan blade of the cooling tower disclosed in application No. CN202122324384.0 is calculated by numerical simulation. Under the premise that the volume flow rate is 75 million m3 / h, the full pressure change range is 105.3 Pa to 148.4 Pa in the installation angle range of 27.5 degrees to 32.5 degrees, and the efficiency is greater than 75%. It can be seen that the axial flow fan has a wide range of use. However, in actual use, the surface of the fan blade may be prone to aging and brittleness during long-term use, resulting in a short service life of the fan.

[0004] Therefore, a durable cooling tower fan is proposed to solve the above problems. SUMMARY

[0005] The application aims to provide a durable cooling tower fan to solve the problem that the fan blade of the cooling tower on the market is prone to aging and brittleness on the surface during long-term use, resulting in a short service life of the fan.

[0006] To achieve the above purpose, the application provides the following technical scheme: a durable cooling tower fan, comprising a center tray frame and eight groups of fan blade bodies connected outside the center tray frame.

[0007] The center tray frame is provided with a fixing mechanism, and the center tray frame is fixedly connected with the fan blade body through the fixing mechanism, and the fan blade body can be detached from the center tray frame through the fixing mechanism. The outer side of the fan blade body is provided with a protective sheet, and the bottom of the center tray frame is provided with a limiting frame, and the inner top of the limiting frame is provided with a driving motor. The driving end of the driving motor is connected with the center tray frame.

[0008] The protective sheet comprises a sheet body, and the outer side of the sheet body is provided with a self-tapping bolt. The sheet body is fixedly connected with the fan blade body through the self-tapping bolt. The outer side of the sheet body is provided with a fixed plate, and the sheet body is fixedly connected with the fan blade body through the fixed plate.

[0009] By arranging the protection sheet outside the fan blade body, the protection sheet can be fixed to the outside of the fan blade body, reinforcing the weakest position of the fan blade and improving the overall performance of the cooling tower fan, thereby preventing the problem of rust damage on the surface of the fan blade body and increasing the protection of the fan during use.

[0010] As a preferred technical solution of the present application, the center tray frame comprises an upper fixing disc, and the bottom of the upper fixing disc is provided with a fixing frame, and the outer side of the fixing frame is provided with a fixing groove and a positioning groove, the inside of the positioning groove is provided with a fixing roller, and the bottom of the fixing frame is connected with a lower fixing disc, and the upper fixing disc is fixedly connected with the lower fixing disc through a fixing shaft.

[0011] The above technical solution can form an upper and lower clamping structure of the upper fixing disc and the lower fixing disc, and the overall rigidity is enhanced by the fixing frame; the partition design of the fixing groove and the positioning groove can accurately match the installation position of the fan blade body, and the fixing roller provides rotational constraint for the positioning frame to avoid deviation due to centrifugal force during fan operation, ensuring that the eight groups of fan blades are uniformly stressed.

[0012] As a preferred technical solution of the present application, the fan blade body comprises a blade, and the outer side of the blade is provided with a fixed leaf, and the outer side of the fixed leaf is connected with a positioning frame, the positioning frame is fixedly connected through a fixing roller, the fixing mechanism comprises a threaded groove, and the outer side of the positioning frame is fixedly connected with the threaded groove, and the inside of the threaded groove is provided with a first fixing bolt and a second fixing bolt, and the first fixing bolt and the second fixing bolt can be threadedly fixedly connected with the positioning groove.

[0013] The above technical solution can realize the preliminary positioning of the fan blade body through the cooperation of the positioning frame and the fixing roller, and the double bolts are fixedly connected through the threaded groove and the positioning groove, so that the equipment can be more firm during fixing.

[0014] As a preferred technical solution of the present application, the outer side of the first fixing bolt is provided with a buffer damper, and the outer side of the second fixing bolt is provided with a limiting block, and the buffer damper and the limiting block can be fixedly connected with the center tray frame, and the bottom of the second fixing bolt is provided with a fixing sheet, and the fixing sheet can be fixedly attached to the bottom of the lower fixing disc.

[0015] The above technical solution can make the buffer damper absorb high-frequency vibration during fan rotation to avoid loosening of the bolt due to resonance; the limiting block and the fixing sheet form mechanical limiting to prevent thread galling caused by excessive tightening of the bolt.

[0016] As a preferred technical solution of the present application, the positioning frame can be fixedly connected with the fixing roller inside the positioning groove, and the outer side of the blade is wrapped by the sheet body, and the sheet body is fixedly connected with the blade through a self-tapping bolt.

[0017] The rigid connection of the positioning frame and the fixing roller limits the circumferential displacement of the fan blade, and the overall wrapping of the blade by the sheet body, so that the sheet body can be more firmly connected with the blade.

[0018] As a preferred technical solution of the present application, the bottom of the center tray frame is fixedly connected with the limiting frame, the limiting frame comprises a limiting frame, and the top of the limiting frame is provided with a positioning shaft, the top of the positioning shaft is provided with a positioning ring, and the top of the positioning ring is slidably connected with the top of the center tray frame.

[0019] The above technical solution can provide stable support for the driving motor, the sliding cooperation of the positioning shaft and the positioning ring provides guidance for the rotation of the center tray frame, reduces the radial load of the driving end, and thus increases the stability of the equipment during operation.

[0020] As a preferred technical solution of the present application, the top of the limiting frame is fixedly connected with the driving motor, and the top of the driving motor is provided with a driving shaft, and the driving motor is fixedly connected with the center tray frame through the driving shaft.

[0021] The above technical solution can make the driving shaft directly transmit torque to the center tray frame, reduce power loss, and the rigid connection of the driving motor and the limiting frame ensures the stability of the output torque, avoiding the breakage of the driving shaft caused by vibration.

[0022] As a preferred technical solution of the present application, the outer side of the upper fixed disc and the lower fixed disc in the center tray frame is provided with a threaded hole, and the first fixed bolt and the second fixed bolt can be threadedly fixedly connected with the upper fixed disc and the lower fixed disc.

[0023] The cooperation of the bolt and the threaded hole can realize the rigid locking of the fan blade body and the center tray frame, and the double fixation of the upper and lower fixed discs can disperse the centrifugal force when the fan blade rotates, avoiding overload fracture of a single fixed point.

[0024] As a preferred technical solution of the present application, the outer side of the blade is provided with a connecting frame, the outer side of the connecting frame is provided with a connecting shaft, and the outer side of the connecting frame is provided with an extended leaf, and the connecting frame is fixedly connected with the extended leaf through the connecting shaft.

[0025] The above technical solution can make the extended leaf form an expanded structure with the blade through the connecting frame, increase the effective ventilation area of the fan blade, and thus increase the stability of the equipment during operation.

[0026] As a preferred technical solution of the present application, the outer side of the extended leaf is also provided with a protective sheet, the outer surface of the connecting frame is consistent with the material of the protective sheet, and the material of the protective sheet and the outer surface of the connecting frame is thin aluminum alloy plate.

[0027] The above technical solution enables the protective sheet to provide synchronous protection for the extension blades, preventing them from rusting or aging due to long-term exposure to a humid environment. The selection of the same material ensures the compatibility of the connecting frame and the protective sheet, reducing electrochemical corrosion caused by material differences.

[0028] Compared with the prior art, the present invention has the following beneficial effects: by providing a protective sheet on the outside of the fan blade body, the protective sheet can be fixed to the outside of the fan blade body, reinforcing the weakest position of the fan blade, improving the overall performance of the cooling tower fan, thereby preventing the problem of rust damage on the surface of the fan blade body, and increasing the protection of the fan during use; and by providing a fixing mechanism, the central tray frame can be made more secure when fixing the eight groups of fan blade bodies, thereby increasing the firmness of the equipment during installation;

[0029] Furthermore, the central tray frame allows the upper and lower fixing plates to form a clamping structure, with the fixing frame enhancing overall rigidity. The partitioned design of the fixing slots and positioning slots precisely matches the installation position of the fan body, while the fixed rollers provide rotational constraints for the positioning frame, preventing the fan blades from deflecting due to centrifugal force during operation and ensuring uniform force on the eight groups of blades.

[0030] Furthermore, by making the material of the connecting frame and the protective sheet consistent, the protective sheet provides synchronous protection for the extension leaves, preventing them from rusting or aging due to long-term exposure to a humid environment. The selection of the same material ensures the compatibility of the connecting frame and the protective sheet, reducing electrochemical corrosion caused by material differences. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the front elevation structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the front elevation structure of the center tray rack of the present invention;

[0033] Figure 3 is a schematic diagram of a three-dimensional structure of a front cross-section of a center tray rack of the present invention;

[0034] Figure 4 It is a schematic diagram of the bottom elevation structure of the center tray rack of the present invention;

[0035] Figure 5 Schematic diagram of the layered three-dimensional structure of the center tray rack of the present invention;

[0036] Figure 6 For the present invention Figure 5 A schematic diagram of the structure enlarged at point A;

[0037] Figure 7 Schematic diagram of the layered three-dimensional structure of the fan blade body of the present invention;

[0038] Figure 8 A schematic view of the amplification structure at B of the present application Figure 7 A schematic view of the amplification structure at B of the present application

[0039] Figure 9 A schematic view of the layered stereoscopic structure of the protective sheet of the present application

[0040] Figure 10 A schematic view of the front elevation structure of the center tray frame of Example 2 of the present application

[0041] Figure 11 A schematic view of the layered stereoscopic structure of the fan body of Example 2 of the present application

[0042] In the figure: 1, center tray frame; 101, upper fixed disc; 102, fixed frame; 103, fixed groove; 104, positioning groove; 105, lower fixed disc; 106, fixed roller; 2, fan body; 201, blade; 202, fixed leaf; 203, positioning frame; 204, first fixed bolt; 205, threaded groove; 206, second fixed bolt; 207, buffer damping; 208, limiting block; 209, fixed sheet; 210, connecting frame; 211, connecting shaft; 212, extended leaf; 3, protective sheet; 301, sheet body; 302, self-tapping bolt; 303, fixed plate; 4, limiting frame; 401, limiting frame; 402, positioning shaft; 403, positioning ring; 5, drive motor; 501, drive shaft. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments.

[0044] Example 1: Please refer to Figures 1-9 The present application provides a technical solution: a durable cooling tower fan, which comprises a center tray frame 1 and eight groups of fan bodies 2 connected outside the center tray frame 1.

[0045] The center tray frame 1 is internally provided with a fixing mechanism, and the center tray frame 1 is fixedly connected with the fan bodies 2 through the fixing mechanism, and the fan bodies 2 can be detached from the center tray frame 1 through the fixing mechanism, the outer side of the fan body 2 is provided with a protective sheet 3, the bottom of the center tray frame 1 is provided with a limiting frame 4, and the top inside of the limiting frame 4 is provided with a drive motor 5, and the drive end of the drive motor 5 is connected with the center tray frame 1.

[0046] The protection sheet 3 comprises a sheet body 301, and the sheet body 301 is provided with a self-tapping bolt 302 outside, and the sheet body 301 is fixedly connected with the blade body 2 through the self-tapping bolt 302, and the sheet body 301 is provided with a fixed plate 303 outside, and the sheet body 301 is fixedly connected with the blade body 2 through the fixed plate 303;

[0047] Eight groups of positioning frames 203 of the blade body 2 are aligned with the positioning grooves 104 outside the fixed frame 102 of the center tray frame 1, and the positioning frames 203 are clamped with the fixed rollers 106 in the positioning grooves 104, so as to realize preliminary positioning, and then the first fixing bolt 204 and the second fixing bolt 206 are respectively screwed into the threaded grooves 205, so that the bolts are tightly connected with the threaded holes of the upper fixed disc 101 and the lower fixed disc 105, while ensuring that the buffer damping 207 outside the first fixing bolt 204 is attached to the upper fixed disc 101, and the fixed sheet 209 at the bottom of the second fixing bolt 206 is pressed against the bottom of the lower fixed disc 105, so as to form upper and lower fixation;

[0048] The center tray frame 1 comprises an upper fixed disc 101, and the upper fixed disc 101 is provided with a fixed frame 102 at the bottom, and the fixed frame 102 is provided with a fixed groove 103 and a positioning groove 104 outside, and the positioning groove 104 is provided with a fixed roller 106 inside, and the fixed frame 102 is connected with a lower fixed disc 105 at the bottom, and the upper fixed disc 101 is fixedly connected with the lower fixed disc 105 through a fixed shaft;

[0049] The blade body 2 comprises a blade 201, and the blade 201 is provided with a fixed blade 202 outside, and the fixed blade 202 is connected with a positioning frame 203 outside, and the positioning frame 203 is fixedly connected through a fixed roller 106, and the fixed mechanism comprises a threaded groove 205, and the positioning frame 203 is fixedly connected with the threaded groove 205 outside, and the threaded groove 205 is provided with a first fixing bolt 204 and a second fixing bolt 206 inside, and the first fixing bolt 204 and the second fixing bolt 206 can be threadedly fixedly connected with the positioning groove 104;

[0050] The first fixing bolt 204 is provided with a buffer damping 207 outside, and the second fixing bolt 206 is provided with a limiting block 208 outside, and the buffer damping 207 and the limiting block 208 can be fixedly connected with the center tray frame 1, and the second fixing bolt 206 is provided with a fixed sheet 209 at the bottom, and the fixed sheet 209 can be fixedly attached to the bottom of the lower fixed disc 105;

[0051] The positioning frame 203 can be fixedly connected with the fixed roller 106 inside the positioning groove 104, and the blade 201 is wrapped by the sheet body 301 outside, and the sheet body 301 is fixedly connected with the blade 201 through the self-tapping bolt 302;

[0052] The bottom of the center tray frame 1 is fixedly connected with the limiting frame 4, the limiting frame 4 comprises a limiting frame 401, a positioning shaft 402 is arranged at the top of the limiting frame 401, a positioning ring 403 is arranged at the top of the positioning shaft 402, the top of the positioning ring 403 is slidably connected with the top of the center tray frame 1, the top of the limiting frame 401 is fixedly connected with the driving motor 5, a driving shaft 501 is arranged at the top of the driving motor 5, and the driving motor 5 is fixedly connected with the center tray frame 1 through the driving shaft 501;

[0053] Threaded holes are arranged outside the upper fixed disc 101 and the lower fixed disc 105 in the center tray frame 1, and the first fixed bolt 204 and the second fixed bolt 206 can be threadedly fixedly connected with the upper fixed disc 101 and the lower fixed disc 105;

[0054] After assembly, the sheet body 301 of the protective sheet 3 is wrapped outside the blade 201 and the extended blade 212, and is fixed by the self-tapping bolt 302 and the fixed plate 303, the weather-resistant material of the sheet body 301 is used to isolate humid air from the surface of the blade, prevent rust and aging, the bottom of the assembled center tray frame 1 is connected with the limiting frame 4, the positioning ring 403 is sleeved on the top of the positioning shaft 402, the center tray frame 1 can rotate along the positioning ring 403, then the driving motor 5 is fixed on the top of the limiting frame 401, and the driving shaft 501 is connected with the lower fixed disc 105 of the center tray frame 1, and the power transmission structure installation is completed.

[0055] Embodiment 2: The difference between this embodiment and embodiment 1 is that, Figures 10-11 The connecting frame 210 is provided outside the blade 201, the connecting shaft 211 is arranged outside the connecting frame 210, the extended blade 212 is arranged outside the connecting frame 210, the connecting frame 210 is fixedly connected with the extended blade 212 through the connecting shaft 211, the protective sheet 3 is arranged outside the extended blade 212, the material of the outer surface of the connecting frame 210 is consistent with that of the protective sheet 3, and the materials of the protective sheet 3 and the outer surface of the connecting frame 210 are both thin aluminum alloy plates;

[0056] By arranging the connecting frame 210 outside the blade 201, the connecting frame 210 can be fixed with the extended blade 212 through the connecting shaft 211, so that the blade 201 can be more firmly fixed when being fixedly connected with the extended blade 212, and the diameter of the blade for guiding wind power can be increased.

[0057] Working principle: when using the durable cooling tower fan, first, the fan blade body 2 is assembled with the center tray frame 1, the positioning frame 203 of the eight fan blade bodies 2 is aligned with the positioning groove 104 outside the fixed frame 102 of the center tray frame 1, the positioning frame 203 is clamped with the fixed roller 106 in the positioning groove 104, preliminary positioning is realized, then the first fixing bolt 204 and the second fixing bolt 206 are screwed into the threaded groove 205 respectively, the bolts are tightly connected with the threaded holes of the upper fixed disc 101 and the lower fixed disc 105, at the same time, the buffer damping 207 outside the first fixing bolt 204 is attached to the upper fixed disc 101, the fixed sheet 209 at the bottom of the second fixing bolt 206 is pressed against the bottom of the lower fixed disc 105, forming upper and lower fixation;

[0058] After assembly, the sheet body 301 of the protective sheet 3 is wrapped outside the blade 201 and the extended blade 212, multi-point fixation is realized through the self-tapping bolt 302 and the fixed plate 303, the weather-resistant material of the sheet body 301 is used to isolate humid air from the blade surface, prevent rust and aging, the assembled center tray frame 1 is connected with the limiting frame 4, the positioning ring 403 is sleeved on the top of the positioning shaft 402, it is ensured that the center tray frame 1 can rotate along the positioning ring 403, then the driving motor 5 is fixed on the top of the limiting frame 401, the driving shaft 501 is connected with the lower fixed disc 105 of the center tray frame 1, the power transmission structure installation is completed;

[0059] Start the driving motor 5, the driving shaft 501 drives the center tray frame 1 to rotate, eight fan blade bodies 2 rotate synchronously to generate airflow. During rotation, the buffer damping 207 absorbs high-frequency vibration, the limiting block 208 prevents the bolt from loosening, the cooperation of the positioning ring 403 and the positioning shaft 402 reduces the radial load of the driving end, ensuring stable operation of the whole.

[0060] Thus a series of work is completed, the contents not described in detail in the specification belong to the existing technology known to those skilled in the art.

[0061] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the involved claims.

Claims

1. A durable cooling tower fan, comprising a central tray frame (1) and eight sets of fan blade bodies (2) connected to the outer side of the central tray frame (1); Its characteristics are: The center tray frame (1) is provided with a fixing mechanism inside, and the center tray frame (1) is fixedly connected to the fan blade body (2) through the fixing mechanism, and the fan blade body (2) can be removed from the center tray frame (1) through the fixing mechanism, a protective sheet (3) is provided on the outside of the fan blade body (2), and a limit frame (4) is provided at the bottom of the center tray frame (1), and a driving motor (5) is provided inside the top of the limit frame (4), and a driving end of the driving motor (5) is connected to the center tray frame (1); The protective sheet (3) comprises a sheet body (301), and a self-tapping bolt (302) is provided on the outside of the sheet body (301), and the sheet body (301) is fixedly connected to the fan blade body (2) via the self-tapping bolt (302), and a fixing plate (303) is provided on the outside of the sheet body (301), and the sheet body (301) is fixedly connected to the fan blade body (2) via the fixing plate (303).

2. The durable cooling tower fan according to claim 1, characterized in that: The central tray frame (1) comprises an upper fixed plate (101), a fixed frame (102) is provided at the bottom of the upper fixed plate (101), a fixed groove (103) and a positioning groove (104) are provided on the outside of the fixed frame (102), a fixed roller (106) is provided inside the positioning groove (104), and a lower fixed plate (105) is connected to the bottom of the fixed frame (102), and the upper fixed plate (101) is fixedly connected to the lower fixed plate (105) via a fixed shaft.

3. The durable cooling tower fan according to claim 2, characterized in that: The fan blade body (2) comprises a blade (201), and a fixed blade (202) is provided on the outer side of the blade (201), and a positioning frame (203) is connected to the outer side of the fixed blade (202), the positioning frame (203) is fixedly connected via a fixing roller (106), the fixing mechanism comprises a threaded groove (205), and the outer side of the positioning frame (203) is fixedly connected to the threaded groove (205), and a first fixing bolt (204) and a second fixing bolt (206) are provided inside the threaded groove (205), and the first fixing bolt (204) and the second fixing bolt (206) can be threadedly fixedly connected to the positioning groove (104).

4. The durable cooling tower fan according to claim 3, characterized in that: A buffer damper (207) is provided on the outside of the first fixing bolt (204), and a limit block (208) is provided on the outside of the second fixing bolt (206), and the buffer damper (207) and the limit block (208) can be fixedly connected to the central tray frame (1), and a fixing plate (209) is provided at the bottom of the second fixing bolt (206), and the fixing plate (209) can be fixedly fitted with the bottom of the lower fixing plate (105).

5. The durable cooling tower fan according to claim 3, characterized in that: The positioning frame (203) can be fixedly connected to the fixed roller (106) inside the positioning groove (104), and the outer side of the blade (201) is wrapped by the thin sheet body (301), and the thin sheet body (301) is fixedly connected to the blade (201) through a self-tapping bolt (302).

6. The durable cooling tower fan according to claim 5, characterized in that: The bottom of the central tray frame (1) is fixedly connected to the limiting frame (4), and the limiting frame (4) includes a limiting frame (401), and the top of the limiting frame (401) is provided with a positioning shaft (402), the top of the positioning shaft (402) is provided with a positioning ring (403), and the top of the positioning ring (403) is slidably connected to the top of the central tray frame (1).

7. The durable cooling tower fan according to claim 6, characterized in that: The top of the limiting frame (401) is fixedly connected to the driving motor (5), and a driving shaft (501) is provided on the top of the driving motor (5), and the driving motor (5) is fixedly connected to the central tray frame (1) via the driving shaft (501).

8. The durable cooling tower fan according to claim 7, characterized in that: The upper fixing plate (101) and the lower fixing plate (105) in the central tray frame (1) are provided with threaded holes on their outer sides, and the first fixing bolt (204) and the second fixing bolt (206) can be threadedly fixedly connected to the upper fixing plate (101) and the lower fixing plate (105).

9. The durable cooling tower fan according to claim 4, characterized in that: A connecting frame (210) is provided on the outside of the blade (201), a connecting shaft (211) is provided on the outside of the connecting frame (210), and an extension blade (212) is provided on the outside of the connecting frame (210), and the connecting frame (210) is fixedly connected to the extension blade (212) via the connecting shaft (211).

10. The durable cooling tower fan according to claim 9, characterized in that A protective sheet (3) is also provided on the outside of the extension leaf (212), and the outer surface of the connecting frame (210) is made of the same material as the protective sheet (3), and the outer surfaces of the protective sheet (3) and the connecting frame (210) are both made of thin aluminum alloy plates.

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