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CN-224214417-U - Fan blade angle correcting device

CN224214417UCN 224214417 UCN224214417 UCN 224214417UCN-224214417-U

Abstract

The utility model belongs to the technical field of boiler fans, and particularly relates to a fan blade angle correction device which comprises a rotating part and a fixing part, wherein the rotating part comprises a dial, an angle dividing line is arranged on the dial, the dial is fixed at the top end of a blade rotating shaft, the fixing part comprises a mounting frame and an indicating needle, the indicating needle is fixedly connected to the mounting frame, the mounting frame is fixedly arranged on an impeller, the dial is rotatably connected to the mounting frame, and the indicating needle points to the angle dividing line. During correction, one blade is detached, the dial is fixed on the blade rotating shaft, the mounting frame is fixed on the impeller, the blade rotating shaft is driven to rotate when the adjusting mechanism of the blade works, the blade rotating shaft drives the dial to rotate, the dial synchronously rotates with other blades, the indicating needle points to the angle line to display the rotating angle of the blade, and therefore correction of the rotating angle of the blade is facilitated, and accuracy of the rotating angle of the blade is guaranteed.

Inventors

  • JIN WENBIN
  • JIN LIXU
  • JIANG TAO
  • LIU DONGMEI
  • ZHU XIAOFENG

Assignees

  • 山东宏桥新型材料有限公司
  • 邹平县宏旭热电有限公司

Dates

Publication Date
20260508
Application Date
20250513

Claims (8)

  1. 1. The utility model provides a fan blade angle correcting unit, its characterized in that, includes rotation part and fixed part, rotation part includes the calibrated scale, be equipped with the angle line on the calibrated scale, the calibrated scale is fixed on the top of blade axis of rotation, fixed part includes mounting bracket and pilot pin, pilot pin fixed connection is in on the mounting bracket, mounting bracket fixed mounting is on the impeller, the calibrated scale rotates to be connected on the mounting bracket, the pilot pin is directional the angle line.
  2. 2. The fan blade angle correction device according to claim 1, wherein a base is fixedly connected to the lower portion of the dial, and the base is detachably mounted on the top end of the blade rotating shaft.
  3. 3. The fan blade angle correction device according to claim 2, wherein a bolt hole for installing a blade is formed in the top end of the blade rotating shaft, a through hole is formed in the base corresponding to the bolt hole, a mounting bolt is arranged in the through hole in a penetrating manner, and the mounting bolt penetrates through the through hole and is in threaded connection with the bolt hole.
  4. 4. The fan blade angle correction device according to claim 1, wherein the mounting frame comprises a U-shaped fixing rod, clamping pieces are arranged at two ends of the fixing rod, the two clamping pieces are located at two sides of the impeller, and the two clamping pieces are respectively abutted to outer walls of two sides of the impeller.
  5. 5. The fan blade angle correction device according to claim 4, wherein a vertical shaft is arranged at the center of the dial, the vertical shaft is rotatably connected to the dial through a bearing, the top end of the vertical shaft is fixedly connected to the fixing rod, and the indicator needle is fixedly connected to the vertical shaft.
  6. 6. The fan blade angle correction device according to claim 4, wherein the clamping member comprises a threaded rod, the threaded rod is perpendicular to the end face of the outer wall of the impeller, the threaded rod penetrates through the fixing rod and is in threaded connection with the fixing rod, a hand wheel is fixedly connected to one end, away from the impeller, of the threaded rod, and one end, close to the impeller, of the threaded rod abuts against the outer wall of the impeller.
  7. 7. The fan blade angle correction device according to claim 6, wherein one end of the threaded rod, which is close to the impeller, is rotatably connected with an X-shaped supporting frame, and four ends of the supporting frame are respectively provided with supporting feet, and the supporting feet are abutted against the outer wall of the impeller.
  8. 8. The fan blade angle correction device of claim 7, wherein the support feet are rubber.

Description

Fan blade angle correcting device Technical Field The utility model belongs to the technical field of boiler fans, and particularly relates to a fan blade angle correction device. Background The large axial flow fan is very important auxiliary equipment of a thermal power plant, the fan needs to adjust the output according to the requirement of the boiler load in operation, the main mode of adjusting the output of the fan is variable frequency adjustment and movable blade adjustment, and the movable blade adjustable axial flow fan is the most widely applied one. The motor drives the impeller of the fan to rotate at a high speed through the driving shaft, blades on the impeller do work on working media, and the working angle of the blades on the impeller of the fan is changed through the adjusting mechanism in the operation of the fan so as to meet the changing requirements of the flow and the pressure of the system. The circumference at the impeller is evenly installed to a plurality of blades, adjustment mechanism includes a plurality of axis of rotation, the axis of rotation sets up along the radial of impeller and rotates to be connected in the impeller, blade fixed connection is on the top of axis of rotation, the bottom of axis of rotation is connected with the crank, the one end that the axis of rotation was kept away from to the crank is connected with the regulating plate, the axial displacement along the impeller of regulating plate, the regulating plate is driven by hydraulic pressure governing system, consequently, hydraulic pressure governing system drives regulating plate axial displacement, the regulating plate passes through the crank and drives the axis of rotation and rotate, the axis of rotation drives the blade and rotates, that is, change the axial displacement of regulating plate into the circular motion of blade through the crank, thereby realize the angle modulation of blade. The fan runs for a long time, and the problem of transmission components such as a hydraulic adjusting system, an adjusting disc, a crank, a rotating shaft and the like can cause deviation in angle adjustment of the blades, so that the normal operation of the fan is influenced, and therefore, the blades are required to be subjected to angle correction regularly. Disclosure of utility model In order to solve the problems in the background art, the utility model provides a fan blade angle correction device, wherein one blade is detached during correction, a dial is fixed on a blade rotating shaft, a mounting frame is fixed on an impeller, an adjusting mechanism of the blade drives the blade rotating shaft to rotate during operation, the blade rotating shaft drives the dial to rotate along with other blades, and an indicating needle points to an angle line to display the rotating angle of the blade, so that the rotating angle of the blade is corrected conveniently, and the accuracy of the rotating angle of the blade is ensured. The utility model provides a fan blade angle correction device which comprises a rotating part and a fixing part, wherein the rotating part comprises a dial, an angle dividing line is arranged on the dial, the dial is fixed at the top end of a blade rotating shaft, the fixing part comprises a mounting frame and an indicating needle, the indicating needle is fixedly connected to the mounting frame, the mounting frame is fixedly arranged on an impeller, the dial is rotatably connected to the mounting frame, and the indicating needle points to the angle dividing line. Through adopting above-mentioned technical scheme, during the correction, pull down one of them blade on the impeller, fix the calibrated scale in the blade axis of rotation earlier, then fix the mounting bracket on the impeller, the adjustment mechanism during operation of blade orders about the blade axis of rotation to rotate, the blade axis of rotation drives the calibrated scale and rotates along with other blades synchrony, the directional angle line of pilot needle is in order to show the turned angle of blade to be convenient for correct the turned angle of blade, guarantee the accuracy of blade turned angle. Further, the below fixedly connected with base of calibrated scale, base demountable installation is at the top of blade axis of rotation. Through adopting above-mentioned technical scheme, the calibrated scale passes through the base demountable installation on the blade axis of rotation, the installation and the dismantlement of the calibrated scale of being convenient for. Further, the bolt hole that is used for installing the blade has been seted up on the top of blade axis of rotation, and the through-hole has been seted up to corresponding bolt hole in the base, wears to be equipped with mounting bolt in the through-hole, and mounting bolt runs through the through-hole and threaded connection is in the bolt hole. Through adopting above-mentioned technical scheme, when installing the calibrated scale, aim at the b