CN219911174U - Double-suction centrifugal fan - Google Patents
Double-suction centrifugal fan Download PDFInfo
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- CN219911174U CN219911174U CN202320592768.7U CN202320592768U CN219911174U CN 219911174 U CN219911174 U CN 219911174U CN 202320592768 U CN202320592768 U CN 202320592768U CN 219911174 U CN219911174 U CN 219911174U
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- fan main
- main body
- fan
- air inlet
- transmission shaft
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- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 210000001503 joint Anatomy 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a double-suction centrifugal fan, which comprises a base and also comprises an exhaust mechanism, wherein the top of the base is provided with the exhaust mechanism, the exhaust mechanism comprises a fan main body, a supporting seat, a transmission shaft, a motor, a belt pulley, a belt, an air inlet box, a connecting plate, a bearing and a flange plate, the supporting seat is positioned outside the air inlet box, the transmission shaft is arranged between the supporting seat and an impeller inside the fan main body, the bearing arranged on one side of the air inlet box far away from the fan main body is matched with the supporting seat positioned outside the fan main body, the position of the transmission shaft is stably supported and fixed, the normal operation of the transmission shaft is ensured, and during actual operation, external air flow enters the inside the fan main body from the air inlet box, the impact influence on the supporting seat is avoided, the failure rate of the double-suction fan is further reduced, and the normal use of the double-suction centrifugal fan is ensured.
Description
Technical Field
The utility model relates to the technical field of centrifugal fans, in particular to a double-suction centrifugal fan.
Background
The centrifugal fan is a driven fluid machine which can raise the pressure of gas and discharge the gas by means of inputted mechanical energy, and is extensively used for ventilation, dust-discharging and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and air-inducing of boilers and industrial furnaces and kilns, cooling and ventilation in air-conditioning equipment and household appliances and other different places and environments, and the double-suction centrifugal fan is a centrifugal fan which is used for air intake on two sides of fan main body, and has the characteristics of large flow coefficient and small rotor revolution coefficient, so that the application is very extensive.
The existing double-suction centrifugal fan has the following defects when in use: the specific installation of the double-suction centrifugal fan is generally divided into two modes of free air inlet and air inlet butt joint of an external pipeline, when the air inlet needs to be connected with the pipeline, the double-suction centrifugal fan is required to design two air inlet boxes and connect the two air inlet boxes, and the situation can lead to that the supporting seats are all required to be arranged in the air inlet boxes, and when the double-suction centrifugal fan operates, the air inlet ends can generate a lot of interference on the supporting seats, so that the operation defects of the supporting seats and the transmission shaft are easily caused.
Disclosure of Invention
The utility model mainly aims to provide a double-suction centrifugal fan, and an exhaust mechanism arranged at the top of a base adopts a unique air inlet box structure, so that smooth running of a transmission shaft is ensured, and meanwhile, a supporting seat is arranged outside a fan main body and is not influenced by air inlet flow, so that the problems in the background technology can be effectively solved.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a double suction centrifugal fan, includes the base, still includes exhaust mechanism, the base top is provided with exhaust mechanism, exhaust mechanism includes fan main part, bearing, transmission shaft, motor, band pulley, belt, inlet box, connecting plate, bearing and ring flange, and the bearing is located the inlet box outside and installs the transmission shaft between bearing and the inside impeller of fan main part, and fan main part both sides inlet end all is provided with the inlet box with outside pipeline butt joint and the junction is provided with the bearing between inlet box and the transmission shaft.
The fan comprises a fan body, and is characterized by further comprising an opening and closing mechanism, wherein the opening and closing mechanism is arranged on one side of the surface of the fan body and comprises a hinge, an arc clamping cover, threaded holes, screws and rubber mats, the arc clamping cover is movably connected to one side of the surface of the fan body through the hinge, the threaded holes are formed in the tail ends of the arc clamping cover and the corresponding positions of the surface of the fan body, and the screws are detachably connected between the threaded holes; under the normal use state, the arc-shaped clamping cover is closed, the side edge connecting position of the arc-shaped clamping cover is tightly attached to the surface of the fan main body, the rubber cushion ensures the tightness of the connecting part, the butt joint part is fixedly connected with the angle of the arc-shaped clamping cover through the threaded hole and the screw, when the impeller inside the fan is required to be overhauled and maintained, the screw can be screwed out and the arc-shaped clamping cover can be rotated along the hinge, the arc-shaped clamping cover can be integrally unfolded, the inside of the fan main body is directly exposed, the overhauling and the maintenance operation are convenient to carry out, and the use is more convenient.
Further, belt wheels corresponding to the positions are arranged on the surfaces of the motor power output end and the transmission shaft, and the belt wheels are connected through a belt; when the motor operates, the belt wheel and the belt cooperate to drive the transmission shaft to operate.
Further, a connecting plate is arranged at the joint of the air inlet box and the external pipeline, and flange plates are welded on the joint sides of the surface of the air inlet box and the fan main body; the air inlet box can be conveniently in butt joint with an external pipeline through the connecting plate, and the air inlet box can be installed on two sides of the fan main body through the flange plate matched fasteners.
Further, rubber pads for improving the sealing performance of the joint are adhered to the side edge of the surface of the arc-shaped clamping cover facing the fan main body; the rubber cushion positioned at the joint can ensure the tightness of the joint.
Compared with the prior art, the utility model has the following beneficial effects: the top of the base is provided with a fan main body, two ends of the fan main body are provided with an air inlet box which is in butt joint with an external air inlet pipeline, one side of the surface of the air inlet box, far away from the fan main body, is provided with a bearing which is in butt joint with a transmission shaft, and the bearing arranged on one side of the air inlet box, far away from the fan main body, is matched with a supporting seat positioned outside the fan main body to stably support and fix the position of the transmission shaft, so that the fan main body can normally operate, and external air flow enters the inside of the fan main body from the air inlet box during actual operation, so that the impact influence on the supporting seat is avoided, the failure rate of the double-suction fan is reduced, and the normal use of the double-suction fan is ensured; under the normal use state, the arc-shaped clamping cover is closed, the side edge connecting position of the arc-shaped clamping cover is tightly attached to the surface of the fan main body, the rubber cushion ensures the tightness of the connecting part, the butt joint part is fixedly connected with the angle of the arc-shaped clamping cover through the threaded hole and the screw, when the impeller inside the fan is required to be overhauled and maintained, the screw can be screwed out and the arc-shaped clamping cover can be rotated along the hinge, the arc-shaped clamping cover can be integrally unfolded, the inside of the fan main body is directly exposed, the overhauling and the maintenance operation are convenient to carry out, and the use is more convenient.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a double suction centrifugal fan according to the present utility model.
Fig. 2 is a schematic diagram of the air inlet box structure of the double-suction centrifugal fan.
Fig. 3 is a schematic structural view of an unfolded arc-shaped clamping cover of a double-suction centrifugal fan.
In the figure: 1. a base; 2. an exhaust mechanism; 201. a fan main body; 202. the supporting seat; 203. a transmission shaft; 204. a motor; 205. a belt wheel; 206. a belt; 207. an air inlet box; 208. a connecting plate; 209. a bearing; 210. a flange plate; 3. an opening and closing mechanism; 301. a hinge; 302. an arc-shaped clamping cover; 303. a threaded hole; 304. a screw; 305. rubber cushion.
Detailed Description
The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
As shown in fig. 1-3, a double-suction centrifugal fan comprises a base 1 and further comprises an exhaust mechanism 2, wherein the exhaust mechanism 2 is arranged at the top of the base 1, the exhaust mechanism 2 comprises a fan main body 201, a supporting seat 202, a transmission shaft 203, a motor 204, a belt pulley 205, a belt 206, an air inlet box 207, a connecting plate 208, a bearing 209 and a flange 210, the supporting seat 202 is positioned outside the air inlet box 207, the transmission shaft 203 is arranged between the supporting seat 202 and an impeller inside the fan main body 201, the air inlet boxes 207 which are in butt joint with external pipelines are arranged at air inlet ends at two sides of the fan main body 201, and the bearing 209 is arranged at the joint between the air inlet box 207 and the transmission shaft 203.
The fan comprises a fan main body 201, and is characterized by further comprising an opening and closing mechanism 3, wherein the opening and closing mechanism 3 is arranged on one side of the surface of the fan main body 201, the opening and closing mechanism 3 comprises a hinge 301, an arc-shaped clamping cover 302, threaded holes 303, screws 304 and rubber pads 305, the arc-shaped clamping cover 302 is movably connected to one side of the surface of the fan main body 201 through the hinge 301, the threaded holes 303 are formed in the corresponding positions of the tail end of the arc-shaped clamping cover 302 and the surface of the fan main body 201, and screws 304 are detachably connected between the threaded holes 303; under normal use state, the arc-shaped clamping cover 302 is closed, the side connecting position of the arc-shaped clamping cover is tightly attached to the surface of the fan main body 201, the rubber pad 305 ensures the tightness of the connecting position, the butt joint position fixes the angle of the arc-shaped clamping cover 302 through the threaded hole 303 and the screw 304, when the inner impeller of the fan needs to be overhauled and maintained, the screw 304 can be screwed out and the arc-shaped clamping cover 302 can be rotated along the hinge 301, the arc-shaped clamping cover 302 can be integrally unfolded, the inner part of the fan main body 201 is directly exposed, the overhauling and maintenance operation is convenient, and the use is more convenient.
The power output end of the motor 204 and the surface of the transmission shaft 203 are respectively provided with a belt pulley 205 with corresponding positions, the belt pulleys 205 are connected through a belt 206, a connecting plate 208 is arranged at the joint of the air inlet box 207 and an external pipeline, and a flange plate 210 is welded on the joint side of the surface of the air inlet box 207 and the fan main body 201; when the motor 204 operates, the belt wheel 205 and the belt 206 are matched to drive the transmission shaft 203 to operate, the motor is conveniently in butt joint with an external pipeline through the connecting plate 208, and the air inlet box 207 can be installed on two sides of the fan main body 201 through the flange 210 matched with fasteners.
Wherein, the rubber pads 305 for improving the sealing performance of the joint are adhered to the side edge of the surface of the arc-shaped clamping cover 302 facing to the fan main body 201; the rubber pad 305 positioned at the joint can ensure the tightness of the joint.
It should be noted that, when the double-suction centrifugal fan is used, the fan main body 201 is installed at the top of the base 1, the air inlet box 207 which is in butt joint with an external air inlet pipeline is installed at both ends of the fan main body 201, the bearing 209 which is in butt joint with the transmission shaft 203 is installed at the position of one side of the air inlet box 207 which is far away from the fan main body 201, the position of the transmission shaft 203 is stably supported and fixed by matching the bearing 209 installed at the side of the air inlet box 207 which is far away from the fan main body 201 with the supporting seat 202 which is positioned outside the fan main body 201, and meanwhile, the normal operation of the double-suction centrifugal fan is ensured, and the external air flow enters the inside of the fan main body 201 from the air inlet box 207 in actual operation, so that the impact influence on the supporting seat 202 is not caused, and the failure rate of the double-suction fan is further reduced, and the normal use of the double-suction centrifugal fan is ensured; under normal use state, the arc-shaped clamping cover 302 is closed, the side connecting position of the arc-shaped clamping cover is tightly attached to the surface of the fan main body 201, the rubber pad 305 ensures the tightness of the connecting position, the butt joint position fixes the angle of the arc-shaped clamping cover 302 through the threaded hole 303 and the screw 304, when the inner impeller of the fan needs to be overhauled and maintained, the screw 304 can be screwed out and the arc-shaped clamping cover 302 can be rotated along the hinge 301, the arc-shaped clamping cover 302 can be integrally unfolded, the inner part of the fan main body 201 is directly exposed, the overhauling and maintenance operation is convenient, and the use is more convenient.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a double suction centrifugal fan, includes base (1), its characterized in that still includes exhaust mechanism (2), base (1) top is provided with exhaust mechanism (2), exhaust mechanism (2) are including fan main part (201), bearing (202), transmission shaft (203), motor (204), band pulley (205), belt (206), suction box (207), connecting plate (208), bearing (209) and ring flange (210), bearing (202) are located suction box (207) outside and install transmission shaft (203) between bearing (202) and the inside impeller of fan main part (201), fan main part (201) both sides inlet end all is provided with suction box (207) and transmission shaft (203) between the junction be provided with bearing (209) with outside pipeline butt joint.
2. A double suction centrifugal fan according to claim 1, wherein: still include opening and closing mechanism (3), fan main part (201) surface one side is provided with opening and closing mechanism (3), opening and closing mechanism (3) are including hinge (301), arc card cover (302), screw hole (303), screw (304) and cushion (305), and fan main part (201) surface one side is through hinge (301) swing joint has arc card cover (302), and arc card cover (302) end all offer threaded hole (303) and screw hole (303) between detachable connection screw (304) with fan main part (201) surface corresponding position.
3. A double suction centrifugal fan according to claim 1, wherein: the power output end of the motor (204) and the surface of the transmission shaft (203) are respectively provided with a belt wheel (205) with corresponding positions, and the belt wheels (205) are connected through a belt (206).
4. A double suction centrifugal fan according to claim 1, wherein: the air inlet box (207) is provided with a connecting plate (208) at the butt joint position of the air inlet box (207) and an external pipeline, and a flange plate (210) is welded on one butt joint side of the surface of the air inlet box (207) and the fan main body (201).
5. A double suction centrifugal fan according to claim 2, wherein: rubber pads (305) for improving the sealing performance of the joint are adhered to the side edge of the surface of the arc-shaped clamping cover (302) facing the fan main body (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320592768.7U CN219911174U (en) | 2023-03-23 | 2023-03-23 | Double-suction centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320592768.7U CN219911174U (en) | 2023-03-23 | 2023-03-23 | Double-suction centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219911174U true CN219911174U (en) | 2023-10-27 |
Family
ID=88426783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320592768.7U Withdrawn - After Issue CN219911174U (en) | 2023-03-23 | 2023-03-23 | Double-suction centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219911174U (en) |
-
2023
- 2023-03-23 CN CN202320592768.7U patent/CN219911174U/en not_active Withdrawn - After Issue
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240426 Address after: Room 04 and 06, 13th Floor, Building 4, No. 595 Jinzhou Road, Jinniu High tech Industrial Park, Chengdu, Sichuan Province, 610000 Patentee after: Zhongxin Kairui Engineering Consulting Co.,Ltd. Country or region after: China Address before: No.16, Xinwang Road, industrial park, shuangqiaohe Town, Jinnan District, Tianjin 300350 Patentee before: TIANJIN CHANGGUANG WEIYE SPECIAL FAN Co.,Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20231027 Effective date of abandoning: 20240509 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20231027 Effective date of abandoning: 20240509 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |