CN216788804U - Air inlet box with fan spindle protection structure - Google Patents
Air inlet box with fan spindle protection structure Download PDFInfo
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- CN216788804U CN216788804U CN202123423579.7U CN202123423579U CN216788804U CN 216788804 U CN216788804 U CN 216788804U CN 202123423579 U CN202123423579 U CN 202123423579U CN 216788804 U CN216788804 U CN 216788804U
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- inlet box
- air inlet
- fan
- main shaft
- gas
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Abstract
The utility model relates to an air inlet box with a fan spindle protection structure, which comprises an air inlet box shell, wherein an air inlet is formed in the upper end of the air inlet box shell, a ventilation opening is formed in the side wall of the air inlet box shell, the air inlet box is communicated with a fan shell through the ventilation opening, a gas rectifying cylinder extending towards the inside of the air inlet box is fixedly connected to the outer side wall of the air inlet box, the gas rectifying cylinder is installed towards the middle part of a mounting flange, and a fan spindle penetrates out of a shaft hole in the middle of the flange. The corrosion or abrasion phenomenon to the main shaft of the fan is prevented.
Description
Technical Field
The utility model relates to the technical field of fans, in particular to an air inlet box with a fan main shaft protection structure.
Background
The fan is a device which depends on input mechanical energy, improves gas pressure and discharges gas, and is widely applied to industrial production at present. The air inlet box is a very important part of the fan, can change the flowing direction of a medium, meets various air inlet angles, and has important influence on the performance of the fan.
The double-suction fan is characterized in that air inlet boxes are arranged on two sides of a fan shell, and a main shaft of the fan penetrates through the shell and the air inlet boxes on the two sides. The air inlet box in the prior art has the defects that firstly, different media need to be discharged due to different working conditions of the fan, some media contain dust and impurities, a main shaft is impacted and washed by the impurities and the like, and corrosion and abrasion phenomena occur to different degrees. Secondly, after the air inlet box inhales air, a turbulent flow phenomenon is generated in the air inlet box, and a vortex is easily generated at the position where the main shaft penetrates through the air inlet box, so that the air flow entering the impeller is unstable, the energy is lost, and the air inlet effect is poor. And the abrasion phenomenon of the main shaft is particularly serious at the position where the air inlet box generates vortex.
Therefore, an air inlet box which can protect the main shaft is needed, and a new structural form is provided for prolonging the service life of the main shaft.
Disclosure of Invention
The utility model aims to provide an air inlet box with a fan main shaft protection structure, which can reduce the abrasion phenomenon caused by the washing of impurities and the like on a fan main shaft.
The technical scheme of the utility model is as follows:
the utility model provides a take air inlet box of fan main shaft protection architecture, air inlet box casing upper end are the air inlet, and air inlet box casing lateral wall is opened there is the vent, the air inlet box passes through vent and fan casing intercommunication, fixed connection is to the inside gas rectifier who extends of air inlet box on the air inlet box lateral wall, gas rectifier is worn out to middle part mounting flange, fan main shaft from the shaft hole in the middle of the flange.
The utility model has the beneficial effects that:
1. this application passes the position of inlet box at the main shaft and increases gaseous rectification section of thick bamboo structure, plays the rectification effect to gas in the inlet box, reduces gas turbulence, the vortex phenomenon in the inlet box, makes the runner more level and smooth for the air current that gets into fan impeller is even reasonable, improves the efficiency of admitting air of whole platform fan, thereby reduces the energy consumption of fan, reduces fan noise.
2. Because the main shaft among the prior art is washed away by impurity, dust, appears wearing and tearing, corrodes the phenomenon, and the position that the main shaft passed the inlet box is especially serious, so increase this application gas rectification section of thick bamboo structure plays the guard action to the main shaft, prevents that gas from directly washing away the main shaft, has overcome the serious problem of main shaft wearing and tearing among the prior art, has prolonged main shaft life.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings according to the provided drawings without creative efforts.
Fig. 1 is the overall structure schematic diagram of a fan inlet box of this application.
Fig. 2 is a cross-sectional view of an air inlet box of a blower according to the present application.
Fig. 3 is a sectional view of a combination of an inlet box and a casing of a blower according to the present invention.
The labels in the figure are:
1. an intake box housing; 2. an air inlet; 3. a vent; 4. a fan housing; 5. a gas rectification cylinder; 11. a coupling flange; 51. a flange; 52. a shaft hole; 53. a conical cylinder connecting pipe;
Detailed Description
The air inlet box is a very important part of the fan, can change the flowing direction of a medium, meets various air inlet angles, and has important influence on the performance of the fan. However, the air flows of the air inlet boxes interfere with each other in the air inlet boxes, influence each other, and the air flows at the inlet are unstable, so that the performance is reduced, and the stability of the whole machine is weakened. The utility model provides a fan air inlet box with a main shaft protection device, which aims at solving the problems of fans in the prior art.
The present application will now be described in detail with reference to the drawings, examples of which are illustrated in the accompanying drawings. However, the present invention should not be construed as being limited to the embodiments set forth herein. As will be readily appreciated by those skilled in the art to which the present application pertains, the disclosed features of the example embodiments may be combined. Well-known functions or constructions may not be described in detail herein for brevity and/or clarity.
Fan inlet box, including inlet box casing 1, 1 upper ends of inlet box casing are air inlet 2, and 1 lateral wall of inlet box casing is opened there is vent 3, the inlet box passes through vent 3 and fan casing 4 intercommunication, be equipped with the gas rectifier 5 to the inside extension of inlet box on the inlet box lateral wall, 5 axial middle part mounting flanges 51 of gas rectifier, fan main shaft wear out from the shaft hole 52 in the middle of flange 51. When the air inlet box is used, the main shaft of the fan penetrates through the shaft holes in the middles of the shell and the flange of the air inlet box and is installed on the bearing box. And a shaft seal is arranged between the main shaft and the flange and is sealed, so that gas leakage is prevented or gas at the shaft hole is prevented from being sucked into the air inlet box. According to the flow rule of the ventilator gas, the inventor proves that the gas rectifying cylinder structure is preferably in a round table shape through a plurality of gas field flow analysis experiments. The medium entering from the air inlet of the air inlet box is rectified at the position of the gas rectifying cylinder in the shape of a circular truncated cone, the phenomena of turbulence and vortex in the prior art can be solved, and the efficiency is improved.
The air inlet box is formed by splicing two or more than two air inlet boxes, the connecting flange 11 is arranged at the connecting part between every two adjacent air inlet boxes, and the two adjacent air inlet boxes are connected through bolts. Because the inlet box is bulky, need cut apart into many, convenient transportation.
The gas rectifying cylinder 5 is fixedly connected with a conical cylinder connecting pipe 53 towards one end inside the gas inlet box, and a certain included angle is formed between the conical cylinder connecting pipe 53 and the gas rectifying cylinder 5. After the air inlet box is initially cut into a plurality of blocks, the gas rectifying tube part can deform in different degrees, and when the conical tube connecting tube is arranged for assembling the air inlet box, the assembly is more convenient, the assembly is easy, and the accuracy and the tightness are high.
During the use, the gas that gets into the inlet box meets behind the gas rectification section of thick bamboo of this application, and is gaseous by the water conservancy diversion for the gas that gets into in the impeller is more smooth and easy, and speed is even, reduces the fan consumption, increases fan efficiency, noise abatement.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention, and not for limiting the same; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (4)
1. The utility model provides a take air inlet box of protection fan main shaft structure which characterized in that: including the inlet box casing, inlet box casing upper end is the air inlet, and the inlet box casing inner wall is opened there is the vent, the inlet box passes through vent and fan casing intercommunication, the gas rectification section of thick bamboo of fixedly connected with to the inside extension of inlet box on the inlet box lateral wall, gas rectification section of thick bamboo axial middle part mounting flange, the shaft hole in the middle of the fan main shaft follow flange is worn out.
2. The air inlet box with the fan main shaft protection structure as claimed in claim 1, wherein: the gas rectifying cylinder is in a circular truncated cone shape.
3. The air inlet box with the fan main shaft protection structure as claimed in claim 1 or 2, wherein: the air inlet box is formed by splicing two or more than two air inlet boxes, and the adjacent two air inlet boxes are connected through connecting flange bolts.
4. The air inlet box with the fan main shaft protection structure as claimed in claim 1 or 2, wherein: the gas rectifying cylinder is fixedly connected with a conical cylinder connecting pipe towards one end inside the gas inlet box, and a certain included angle is formed between the conical cylinder connecting pipe and the gas rectifying cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123423579.7U CN216788804U (en) | 2021-12-31 | 2021-12-31 | Air inlet box with fan spindle protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123423579.7U CN216788804U (en) | 2021-12-31 | 2021-12-31 | Air inlet box with fan spindle protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216788804U true CN216788804U (en) | 2022-06-21 |
Family
ID=82011636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123423579.7U Active CN216788804U (en) | 2021-12-31 | 2021-12-31 | Air inlet box with fan spindle protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216788804U (en) |
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2021
- 2021-12-31 CN CN202123423579.7U patent/CN216788804U/en active Active
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