CN215109672U - Adjustable butterfly air door of high-pressure centrifugal fan - Google Patents
Adjustable butterfly air door of high-pressure centrifugal fan Download PDFInfo
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- CN215109672U CN215109672U CN202120778523.4U CN202120778523U CN215109672U CN 215109672 U CN215109672 U CN 215109672U CN 202120778523 U CN202120778523 U CN 202120778523U CN 215109672 U CN215109672 U CN 215109672U
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- centrifugal fan
- gear
- hand wheel
- pressure centrifugal
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Abstract
The utility model discloses an adjustable butterfly air door of a high-pressure centrifugal fan, which comprises a high-pressure centrifugal fan body and a butterfly air door positioned at the outlet of the high-pressure centrifugal fan body, wherein the butterfly air door comprises an outer frame, three blades, three first gears, two second gears, three transmission shafts and a hand wheel, the outer frame is a square body consisting of four C-shaped channel steels, the opening of each C-shaped channel steel faces outwards, the three blades are vertically arranged in the outer frame respectively, the three transmission shafts are respectively and transversely positioned at the middle positions of the three blades, the two ends of each transmission shaft respectively penetrate through the left side part and the right side part of the outer frame, the left side part of each transmission shaft is fixedly provided with a first gear, the second gears are arranged between the two first gears, the second gears are rotatably connected with the outer frame, each first gear is mutually meshed with the second gear, the hand wheel is positioned at the circle center of one of the first gears, the hand wheel is provided with a fixing device. The utility model has the advantages of long service life and simple operation.
Description
Technical Field
The utility model relates to a fan field, in particular to high pressure centrifugal fan's adjustable butterfly air door.
Background
The air door is usually used at the outlet of the high-pressure centrifugal fan to control the air quantity and change the direction of the air, but the air door is usually a worm gear, but when the worm gear is in meshing transmission, the relative sliding speed between meshing wheel teeth is high, so the friction loss is large, the efficiency is low, on the other hand, the tooth surface is seriously worn and seriously heated when the worm gear is in rotation, and in order to dissipate heat and reduce wear, the expensive material with better friction reduction and wear resistance and the good lubricating device are usually adopted, so the cost is higher.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high pressure centrifugal fan's adjustable butterfly air door has long service life, easy operation's advantage.
The above technical purpose of the present invention can be achieved by the following technical solutions:
an adjustable butterfly air door of a high-pressure centrifugal fan comprises a high-pressure centrifugal fan body and a butterfly air door positioned at an outlet of the high-pressure centrifugal fan body;
butterfly air door includes outer frame, three blades, three first gear, two second gears, three transmission shaft and hand wheel, outer frame is the square body of constituteing by four C type channel-section steels, every the opening of C type channel-section steel is all outwards, three the blade is vertical form and arranges respectively from top to bottom in outer frame, and is three the transmission shaft transversely is located the intermediate position of three blades respectively, every the both ends of transmission shaft run through the left part and the right part of outer frame respectively, every the left side of transmission shaft all is fixed and is equipped with first gear, two be equipped with the second gear between the first gear, the second gear rotates with outer frame to be connected, every first gear and the equal intermeshing of second gear, the hand wheel is located the centre of a circle department of one of them first gear, be equipped with fixing device on the hand wheel.
The preferred scheme is as follows:
preferably: and the butterfly air door is connected with the high-pressure centrifugal fan body through a flange. The butterfly air door and the high-pressure centrifugal fan body can be conveniently detached and transported through flange connection.
Preferably: and a rubber pad is arranged between the flange joint of the butterfly air door and the high-pressure centrifugal fan body. The rubber pad can alleviate the vibration that the blade angle problem of butterfly air door produced when high-pressure centrifugal fan body discharges wind from the butterfly air door, prolongs high-pressure centrifugal fan body's life.
Preferably: the protective shell is sleeved on the outer sides of the first gear and the second gear and located between the hand wheel and the gears. The protective housing is fixedly connected with the outer frame, and the protective housing can prevent hands from accidentally extending into the hand wheel when the hand wheel is rotated, so that the hands are injured.
Preferably: and a sealing bearing is arranged at the joint of the transmission shaft and the outer frame. The sealed bearing can reduce the friction between the transmission shaft and the outer frame, and further facilitate the rotation of the hand wheel.
Preferably: fixing device includes plum blossom hand wheel and threaded rod, be equipped with the screw hole on the hand wheel, threaded rod and screw hole threaded connection, hand wheel and threaded rod fixed connection, set up a plurality of circular slots around hand wheel a week on the protective housing, it is a plurality of the distance of circular slot apart from the hand wheel centre of a circle is unanimous with the distance of screw hole apart from the hand wheel. The hand wheel can be fixed by inserting the bolt rod into the circular slot, so that the hand wheel can be prevented from being driven by wind to rotate.
To sum up, the utility model discloses following beneficial effect has:
through the arrangement of the first gear and the second gear, the effect of conveniently rotating the blades can be achieved; through the arrangement of the hand wheel and the fixing device, the effect of conveniently fixing the blades can be achieved. The utility model has the advantages of long service life and simple operation.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a butterfly damper;
fig. 3 is another schematic view of the butterfly damper.
In the figure, 1, a high-pressure centrifugal fan body; 2. a butterfly damper; 111. a rubber pad; 211. an outer frame; 212. A blade; 213. a first gear; 214. a second gear; 215. a drive shaft; 216. a hand wheel; 217. c-shaped channel steel; 218. a protective shell; 219. sealing the bearing; 220. a plum blossom hand wheel; 221. a threaded rod.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1-3, an adjustable butterfly damper 2 of a high pressure centrifugal fan comprises a high pressure centrifugal fan body 1 and a butterfly damper 2 located at an outlet of the high pressure centrifugal fan body 1, wherein the butterfly damper 2 comprises an outer frame 211, three blades 212, three first gears 213, two second gears 214, three transmission shafts 215 and a hand wheel 216, the outer frame 211 is a square body composed of four C-shaped channel steel 217, an opening of each C-shaped channel steel 217 faces outward, the butterfly damper 2 is flanged with the high pressure centrifugal fan body 1, a square flange plate is arranged at the outlet of the high pressure centrifugal fan body 1, one side of the C-shaped channel steel 217 facing the centrifugal fan body is provided with mounting holes corresponding to the flange plates one by one, bolts are arranged in the mounting holes, one side of the flange plate principle butterfly damper 2 is provided with nuts, and is connected with the nuts through the threads of the bolts, the butterfly air door 2 is fixed on the high-pressure centrifugal fan body 1, the butterfly air door 2 and the high-pressure centrifugal fan body 1 can be conveniently disassembled and transported through flange connection, meanwhile, in order to prevent noise and vibration generated when the butterfly air door 2 is used for controlling air volume, the high-pressure centrifugal fan body 1 is unstable, a rubber pad 111 is arranged between the flange connection part of the butterfly air door 2 and the high-pressure centrifugal fan body 1, the service life of the high-pressure centrifugal fan body 1 is prolonged, three blades 212 are vertically arranged in an outer frame 211 respectively, three transmission shafts 215 are transversely arranged at the middle positions of the three blades 212 respectively, two ends of each transmission shaft 215 penetrate through the left side part and the right side part of the outer frame 211 respectively, a first gear 213 is fixedly arranged at the left side part of each transmission shaft 215, a second gear 214 is arranged between the two first gears 213, and the second gear 214 is rotatably connected with the outer frame 211, the sealing bearing 219 is arranged at the joint of the transmission shaft 215 and the outer frame 211, the sealing bearing 219 can reduce friction between the transmission shaft 215 and the outer frame 211, and further the hand wheel 216 can be conveniently rotated, each first gear 213 and each second gear 214 are mutually meshed, the hand wheel 216 is located at the center of a circle of the middle first gear 213, a protective shell 218 is sleeved outside the first gear 213 and the second gear 214, the protective shell 218 is located between the hand wheel 216 and the gears, the protective shell 218 is fixedly connected with the outer frame 211, and the protective shell 218 can prevent hands from being accidentally inserted when the hand wheel 216 is rotated, and further the hands are injured.
The hand wheel 216 is provided with a fixing device, the fixing device comprises a plum-blossom-shaped hand wheel 220216 and a threaded rod 221, the hand wheel 216 is provided with a threaded hole, the threaded rod 221 is in threaded connection with the threaded hole, the hand wheel 216 is fixedly connected with the threaded rod 221, a plurality of circular slots surrounding the hand wheel 216 in a circle are formed in the protective shell 218, and the distance from the circular slots to the circle center of the hand wheel 216 is consistent with the distance from the threaded hole to the hand wheel 216. The hand wheel 216 may be secured by inserting the bolt shank into the circular slot, thereby preventing the hand wheel 216 from being rotated by wind.
The specific implementation process comprises the following steps:
when the air quantity needs to be adjusted or the wind direction needs to be controlled, the quincunx hand wheel 220216 is rotated, the fixation of the quincunx hand wheel 220216 by the threaded rod 221 is released, the quincunx hand wheel 220216 is rotated, the first gear 213 in the middle drives the two second gears 214 which are meshed with the first gears to rotate, the two second gears 214 drive the first gear 213 at the top and the first gear 213 at the bottom which are meshed with the two second gears 214 to rotate, the angle of the blade 212 is adjusted, when the required angle is adjusted, the quincunx hand wheel 220216 is rotated, the threaded rod 221 is inserted into the corresponding circular slot, and the hand wheel 216 is fixed.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a high pressure centrifugal fan's adjustable butterfly air door which characterized in that: comprises a high-pressure centrifugal fan body (1) and a butterfly-shaped air door (2) positioned at the outlet of the high-pressure centrifugal fan body (1);
butterfly damper (2) include outer frame (211), three blade (212), three first gear (213), two second gear (214), three transmission shaft (215) and hand wheel (216), outer frame (211) is by the square body that four C type channel-section steel (217) are constituteed, every the opening of C type channel-section steel (217) is all outwards, three blade (212) are vertical form and arrange respectively from top to bottom in outer frame (211), three transmission shaft (215) transversely are located the intermediate position of three blade (212) respectively, every the both ends of transmission shaft (215) run through the left side portion and the right side portion of outer frame (211) respectively, every the left side portion of transmission shaft (215) all is fixed and is equipped with first gear (213), two be equipped with second gear (214) between first gear (213), second gear (214) rotate with outer frame (211) and be connected, each first gear (213) and each second gear (214) are meshed with each other, the hand wheel (216) is located at the circle center of one of the first gears (213), and a fixing device is arranged on the hand wheel (216).
2. The adjustable butterfly damper of the high-pressure centrifugal fan as claimed in claim 1, wherein: the butterfly air door (2) is connected with the high-pressure centrifugal fan body (1) through a flange.
3. The adjustable butterfly damper of the high-pressure centrifugal fan as claimed in claim 2, wherein: and a rubber pad (111) is arranged between the flange joint of the butterfly air door (2) and the high-pressure centrifugal fan body (1).
4. The adjustable butterfly damper of the high-pressure centrifugal fan as claimed in claim 1, wherein: and a protective shell (218) is sleeved outside the first gear (213) and the second gear (214).
5. The adjustable butterfly damper of the high-pressure centrifugal fan as claimed in claim 1, wherein: and a sealing bearing (219) is arranged at the joint of the transmission shaft (215) and the outer frame (211).
6. The adjustable butterfly damper of the high-pressure centrifugal fan as claimed in claim 4, wherein: fixing device includes plum blossom hand wheel (220) and threaded rod (221), be equipped with the screw hole on hand wheel (216), threaded rod (221) and screw hole threaded connection, hand wheel (216) and threaded rod (221) fixed connection, set up a plurality of circular slots around hand wheel (216) a week on protective housing (218), it is a plurality of the distance of circular slot apart from the hand wheel (216) centre of a circle is unanimous with the distance of screw hole apart from hand wheel (216).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120778523.4U CN215109672U (en) | 2021-04-15 | 2021-04-15 | Adjustable butterfly air door of high-pressure centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120778523.4U CN215109672U (en) | 2021-04-15 | 2021-04-15 | Adjustable butterfly air door of high-pressure centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215109672U true CN215109672U (en) | 2021-12-10 |
Family
ID=79266288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120778523.4U Active CN215109672U (en) | 2021-04-15 | 2021-04-15 | Adjustable butterfly air door of high-pressure centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215109672U (en) |
-
2021
- 2021-04-15 CN CN202120778523.4U patent/CN215109672U/en active Active
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