CN211778115U - Anti-vortex wear-resistant fan - Google Patents
Anti-vortex wear-resistant fan Download PDFInfo
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- CN211778115U CN211778115U CN202020400627.7U CN202020400627U CN211778115U CN 211778115 U CN211778115 U CN 211778115U CN 202020400627 U CN202020400627 U CN 202020400627U CN 211778115 U CN211778115 U CN 211778115U
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Abstract
The utility model relates to an anti-vortex wear-resistant fan, which comprises a shell, a motor bracket, an air inlet and an impeller; the casing comprises a front side plate, a rear side plate and a volute; the upper part of the shell is provided with an air outlet; the air inlet is in a hollow round table shape and is fixed in the middle of the front cover plate, and the front cover plate is fixed on the front side plate; the impeller is arranged in the volute; the hub of the impeller is fixedly connected with a motor shaft of the motor; a rear cover plate is arranged on the outer side of the rear side plate and fixed on the rear side plate, and a shell of the motor is fixed on the rear cover plate; the impeller comprises an impeller disc and a hub, wherein the impeller disc is provided with a large blade and a small blade and is fixed on the part, close to the air inlet, of the hub through a fastener; the large blades are uniformly distributed on the surface of the impeller disc close to the air inlet; the other side of the impeller disc is uniformly provided with small blades with the number matched with that of the large blades, and the small blades are arranged in the middle of the two large blades; the inner part of the volute is provided with a volute wear-resistant layer, and the impeller disc and the large blades are provided with impeller wear-resistant layers.
Description
Technical Field
The utility model relates to an air conveyor field, especially a prevent wear-resisting fan of vortex.
Background
The Xinjiang Uygur autonomous region is an important cotton production region in China, the sunshine time is long, the cotton yield is high, the quality is good, and the cotton yield accounts for about one third of the cotton yield in China; particularly, the southern Xinjiang area is a domestic main upland cotton production area, but the southern Xinjiang area has a large area of desert and gobi, has high dust content in air, and is often mixed with gravels, so that not only is much inconvenience brought to the life of people, but also much difficulty is brought to industrial production, and industrial equipment can be applied only by certain transformation; in the production process of enterprises related to the textile industry, a large number of fans are used for dedusting, cooling, gas conveying and the like, the gas mixed with solid particles and dust and sand processed from cotton severely erode fan impellers, shells and the like, the service life of the fans is greatly shorter than the design life, and the production cost of the enterprises is increased.
In order to solve the problem, fan manufacturers accelerate development of wear-resistant products, research on wear-resistant materials and attachment processes thereof is carried out, and wear resistance of an impeller, a shell and the like is improved, but the attachment processes of the wear-resistant materials are complex and low in price, and the wear-resistant materials are generally attached to a part facing an air inlet of a fan.
When improving fan wear resistance, also there are a lot of structures that reduce the vortex to be designed, like chinese utility model patent: a structure disclosed by a centrifugal fan cast steel volute structure with a rectifying ring (No. CN204458537U) comprises a volute and an impeller, wherein an air inlet is arranged in front of the impeller, rear side plates are arranged at two ends of the impeller and behind the impeller, the rectifying ring is arranged between the impeller and the rear side plates, and the rectifying ring is fixedly arranged on the rear side plates through bolts; the structure is simple in design, and by adding the rectifying ring structure, the generation of internal vortex is effectively inhibited, so that the air flow of the fan tends to be stable in a small-flow area; however, the rectifying ring of the structure actually occupies a gap between the rear part of the impeller and the rear side plate, airflow is prevented from entering, pressure imbalance at two sides of the impeller disc is easily caused when the fan operates normally, and deformation of the impeller disc is aggravated under the condition of wind and sand impact.
The other structure is as the Chinese patent application: a high-efficiency LNG transfer pump impeller (application publication number: CN109854530A) comprises a flow guiding part and a pressurizing part connected with the flow guiding part, wherein the flow guiding part comprises a first hub and a plurality of spiral first blades, the first blades are uniformly distributed on the first hub and are connected with the first hub through a first connecting surface, the pressurizing part comprises a first cover plate component, a second cover plate component and a second hub formed on the second cover plate component, the second blades are uniformly distributed on the circumference, a spiral flow channel is formed between every two adjacent second blades, and the second hub is connected with the first hub; the structure can reduce the vortex by arranging the multistage blades, but the blade structure is more complex, the production cost is high, the processing difficulty is high, and the popularization and the use are not facilitated.
Therefore, further improvements in the anti-vortex performance of wear resistant fans are needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a prevent vortex wear-resisting fan can make the fan have better wear resistance to can reduce the production of vortex, prolong the life of fan.
In order to achieve the purpose of the utility model, the utility model provides an anti-vortex wear-resistant fan, which comprises a casing, a motor bracket, an air inlet and an impeller; the motor is arranged on the motor support, and the bottom surface of the motor support is flush with the bottom surface of the machine shell; an air outlet is formed in the upper part of the shell and between the front side plate and the rear side plate;
the air inlet is in a hollow round table shape, the smaller surface of the air inlet is fixed in the middle of the front cover plate, and the front cover plate is fixed on the front side plate; the impeller is arranged in the volute and positioned between the front side plate and the rear side plate; the impeller is fixedly connected with a motor shaft of the motor, one end of the impeller, facing the air inlet, is provided with a shaft end gland, the impeller is provided with a fixing screw hole, the shaft end gland is fastened on the impeller through the fixing screw hole, the middle part of the shaft end gland is provided with a screw hole, and a screw is arranged in the screw hole to fasten the shaft end gland on the motor shaft;
a rear cover plate is arranged on the outer side of the rear side plate, the rear cover plate is fixed on the rear side plate through a fastening piece, and a shell of the motor is fixed on the rear cover plate through the fastening piece;
the impeller comprises an impeller disc and a hub, wherein the impeller disc is provided with a large blade and a small blade, and the impeller disc is fixed on the part, close to the air inlet, of the hub through a fastener; the large blades are uniformly distributed on the surface of the impeller disc close to the air inlet; the large blade is in a straight-blade wing shape and is in a flat-plate-shaped trapezoid with a right angle, one longer right-angle edge is fixed on the impeller disc, the other right-angle edge is flush with the edge of the impeller disc, and the wing tip is close to the hub;
the other surface of the impeller disc is uniformly provided with small blades the number of which is matched with that of the large blades, the small blades are arranged in the middle of the two large blades, and the small blades are rectangular flat;
the volute is internally provided with a volute wear-resistant layer, and the impeller disc and the large blades are provided with impeller wear-resistant layers.
Further, the small vanes have a length not exceeding 1/3 of the radius of the impeller disc and a width not exceeding 1/3 of the width of the large vanes.
Furthermore, a connecting flange is arranged on the outer side of the larger surface of the air inlet.
Further, the large blades are welded on the impeller disc.
Further, the number of the large blades is 8.
Furthermore, the volute wear-resistant layer is a wear-resistant layer welded in the volute.
Furthermore, the front side plate and the rear side plate are both provided with observation windows.
The wear-resistant layer of the impeller can be a ceramic wear-resistant layer or a tungsten carbide wear-resistant coating sprayed by supersonic flame.
When the anti-vortex wear-resistant fan is used, air sucked by the air inlet is driven by the impeller to be discharged from the air outlet under the action of centrifugal force generated in the volute, and the abrasion-resistant layers are arranged inside the volute, the large blades, the impeller disc and the like, so that erosion of sand and dust in the air can be resisted; after part of gas enters the space between the impeller disc and the rear side plate and is blocked and damaged by the small blades arranged on the impeller disc when the gas rotates, multiple air flows are turned back, an effective vortex cannot be formed, the gas generates turbulent flow and can be discharged from the air outlet along with the entering air.
The utility model relates to a prevent wear-resisting fan of vortex compares with prior art and has following advantage:
(1) the wear-resistant layers are arranged in the volute and on the impeller, so that the wind and sand resistance of the fan is improved, and the service life of the fan is prolonged;
(2) the small blades arranged on the back of the impeller can stop the vortex which can be generated, and the impact of airflow on the fan box body is reduced.
Drawings
FIG. 1 is a schematic view of the vortex-proof and wear-resistant blower of the present invention;
fig. 2 is a schematic view of the structure of the vortex-proof wear-resistant fan casing of the present invention;
FIG. 3 is a front view of the vortex-proof wear-resistant fan impeller of the present invention;
fig. 4 is a sectional view of the vortex-proof wear-resistant fan impeller of the present invention along the direction of a-a.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-4, the vortex-proof wear-resistant fan of the present invention comprises a casing 1, a motor 2, a motor bracket 3, an air inlet 4 and an impeller 5; the casing 1 comprises a front side plate 11, a rear side plate 12 and a volute 13, the motor 2 is arranged on the motor support 3, and the bottom surface of the motor support 3 is flush with the bottom surface of the casing 1;
the air inlet 4 is in a hollow round table shape, the smaller surface of the air inlet is fixed in the middle of the front cover plate 111, and the front cover plate 111 is fixed on the front side plate 11; the outer side of the larger surface of the air inlet 4 is generally provided with a connecting flange which is used for connecting an air inlet pipeline and the like; the impeller 5 is arranged in the volute casing 13 and is positioned between the front side plate 11 and the rear side plate 12; the hub 51 of the impeller 5 is fixedly connected with a motor shaft of the motor 2 through a pin key and the like, one end of the hub 51, facing the air inlet 4, is provided with a shaft end gland 6, the hub 51 is provided with a fixing screw hole, the shaft end gland 6 is fastened on the hub 51 through the fixing screw hole, meanwhile, the middle part of the shaft end gland 6 is provided with a screw hole, a screw is arranged in the screw hole to fasten the shaft end gland 6 on the motor shaft, and the motor shaft and the hub 51 are further fixed through the shaft end gland 6;
a rear cover plate 121 is arranged on the outer side of the rear side plate 12, the rear cover plate 121 is fixed on the rear side plate through a fastener, and a housing of the motor 2 is fixed on the rear cover plate 121 through a fastener;
an air outlet 7 is arranged between the front side plate 11 and the rear side plate 12 at the upper part of the machine shell 1; for convenient observation, the front side plate 11 and the rear side plate 12 are both provided with observation windows, preferably arranged at corresponding positions;
the impeller 5 is different from a conventional centrifugal fan impeller in structure and comprises an impeller disc 51 and a hub 52, wherein the impeller disc 51 is provided with large blades 53 and small blades 54, and the impeller disc 51 is fixed on a part, close to the air inlet 4, of the hub 52 through a fastener; the large blades 53 are fixedly arranged on the surface of the impeller disc 51 close to the air inlet 4, and the large blades 53 are generally welded on the impeller disc 51; the large blades 53 are in the shape of straight-blade wings and are in the shape of flat trapezoids with a right angle, wherein one longer right-angle edge is fixed on the impeller disc 51, the other right-angle edge is flush with the edge of the impeller disc 51, and the wing tips are close to the hub 52;
the number of the large blades 53 can be 8 on the impeller disc 51, the small blades 54 with the number matched with that of the large blades 53 are uniformly distributed on the other surface of the impeller disc 51, the small blades 54 are arranged in the middle of the two large blades 53, the small blades 54 are rectangular flat plates, the length does not exceed 1/3 of the radius of the impeller disc 51, and the width does not exceed 1/3 of the width of the large blades 53 generally.
The volute casing 13 is provided with a wear-resistant layer inside, and a wear-resistant layer is generally welded in the volute casing 13, and a surfacing wear-resistant lining plate produced by Beijing Guben technology Limited can be adopted.
The impeller disc 51 and the large blades 53 are provided with impeller wear-resistant layers, which can be ceramic wear-resistant layers or supersonic flame spraying tungsten carbide wear-resistant coatings, and preferably, the small blades 54 are also provided with wear-resistant layers.
When the anti-vortex wear-resistant fan is used, air sucked by the air inlet 4 is driven by the impeller 5 to be discharged from the air outlet 7 under the action of centrifugal force generated in the volute 13, and as the inner part of the volute 13, the large blades 53, the impeller disc 51 and the like are provided with the wear-resistant layers, the erosion of sand and dust in the air can be resisted; after part of the gas enters the space between the impeller disc 51 and the rear side plate 12, when the gas is to rotate, the gas is blocked and damaged by the small blades 54 arranged on the impeller disc 51, so that multiple times of gas flow turning back are formed, an effective vortex cannot be formed, the gas generates turbulent flow, and the gas can be discharged from the air outlet 7 along with the entering air.
In the description of the present specification, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of describing the technical solutions of the present patent and for simplification of the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be interpreted as limiting the present patent application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this patent application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this specification, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present specification can be understood by those of ordinary skill in the art as appropriate.
In this specification, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (7)
1. A vortex-proof wear-resistant fan comprises a shell, a motor bracket, an air inlet and an impeller; the motor is arranged on the motor support, and the bottom surface of the motor support is flush with the bottom surface of the machine shell; an air outlet is formed in the upper part of the shell and between the front side plate and the rear side plate; it is characterized in that the preparation method is characterized in that,
the air inlet is in a hollow round table shape, the smaller surface of the air inlet is fixed in the middle of the front cover plate, and the front cover plate is fixed on the front side plate; the impeller is arranged in the volute and positioned between the front side plate and the rear side plate; the impeller is fixedly connected with a motor shaft of the motor, one end of the impeller, facing the air inlet, is provided with a shaft end gland, the impeller is provided with a fixing screw hole, the shaft end gland is fastened on the impeller through the fixing screw hole, the middle part of the shaft end gland is provided with a screw hole, and a screw is arranged in the screw hole to fasten the shaft end gland on the motor shaft;
a rear cover plate is arranged on the outer side of the rear side plate, the rear cover plate is fixed on the rear side plate through a fastening piece, and a shell of the motor is fixed on the rear cover plate through the fastening piece;
the impeller comprises an impeller disc and a hub, wherein the impeller disc is provided with a large blade and a small blade, and the impeller disc is fixed on the part, close to the air inlet, of the hub through a fastener; the large blades are uniformly distributed on the surface of the impeller disc close to the air inlet; the large blade is in a straight-blade wing shape and is in a flat-plate-shaped trapezoid with a right angle, one longer right-angle edge is fixed on the impeller disc, the other right-angle edge is flush with the edge of the impeller disc, and the wing tip is close to the hub;
the other surface of the impeller disc is uniformly provided with small blades the number of which is matched with that of the large blades, the small blades are arranged in the middle of the two large blades, and the small blades are rectangular flat;
the volute is internally provided with a volute wear-resistant layer, and the impeller disc and the large blades are provided with impeller wear-resistant layers.
2. The anti-vortex abrasion resistant blower of claim 1 wherein said vanelets are no longer than 1/3 of said impeller disk radius and no wider than 1/3 of said vanelets wide.
3. The blower of claim 1, wherein the connecting flange is disposed outside the larger surface of the inlet.
4. The anti-vortex abrasion resistant blower of claim 1 wherein said large vanes are welded to said impeller disk.
5. The anti-vortex abrasion resistant fan of claim 1 wherein said large number of blades is 8.
6. The anti-vortex abrasion resistant fan of claim 1 wherein the wear resistant layer of the volute is a wear resistant layer welded inside the volute.
7. The anti-vortex abrasion-resistant fan as claimed in claim 1, wherein the front side plate and the rear side plate are provided with observation windows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020400627.7U CN211778115U (en) | 2020-03-25 | 2020-03-25 | Anti-vortex wear-resistant fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020400627.7U CN211778115U (en) | 2020-03-25 | 2020-03-25 | Anti-vortex wear-resistant fan |
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| Publication Number | Publication Date |
|---|---|
| CN211778115U true CN211778115U (en) | 2020-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020400627.7U Active CN211778115U (en) | 2020-03-25 | 2020-03-25 | Anti-vortex wear-resistant fan |
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| CN (1) | CN211778115U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962346A (en) * | 2022-06-29 | 2022-08-30 | 江西镁淇实业有限公司 | Efficient treatment chamber for textile manufacturing process |
-
2020
- 2020-03-25 CN CN202020400627.7U patent/CN211778115U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962346A (en) * | 2022-06-29 | 2022-08-30 | 江西镁淇实业有限公司 | Efficient treatment chamber for textile manufacturing process |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.40 Xinhua Road, Xinqiao Town, Jiangyin City, Wuxi City, Jiangsu Province Patentee after: Jiangsu Jingya fan Co.,Ltd. Address before: No.40 Xinhua Road, Xinqiao Town, Jiangyin City, Wuxi City, Jiangsu Province Patentee before: JIANGYIN JINGYA FAN Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |