CN219317219U

CN219317219U - Pneumatic fan

Info

Publication number: CN219317219U
Application number: CN202320203824.3U
Authority: CN
Inventors: 王琳东
Original assignee: Zibo Golden River Fans Co ltd
Current assignee: Zibo Golden River Fans Co ltd
Priority date: 2023-02-09
Filing date: 2023-02-09
Publication date: 2023-07-07
Anticipated expiration: 2033-02-09

Abstract

The utility model provides a pneumatic fan, which belongs to the technical field of fans and comprises a rack, wherein a fan and a pneumatic motor are fixedly arranged on the rack respectively; the fan comprises a shell, fan blades and a rotating shaft, wherein the rotating shaft is arranged in the shell and is in transmission connection with an output shaft of the pneumatic motor. The fan device provided by the utility model has the characteristics of compact structure, small volume, light weight, simplicity in operation, convenience in maintenance, good safety performance and the like, is used as a drawing type local ventilator in an environment with higher gas concentration in a coal mine, can be used for ventilation of an oil depot and a ship bottom cabin with higher oil gas content, and can also be used for local ventilation in metallurgical mines, tunnel engineering and the like.

Description

Pneumatic fan

Technical Field

The utility model belongs to the technical field of fans, and particularly relates to a pneumatic fan.

Background

At present, the fan is a universal machine widely applied to various industries of national economy. The fan blade is driven to rotate in a mode of driving a plurality of motors of the conventional fan, and the fan blade is used for improving the gas pressure so as to achieve the purpose of exhausting gas. However, after flammable gas in places such as coal mine industry, hazardous chemical workshops and flammable and explosive gas warehouses which are enriched with gas reaches a certain concentration, explosion and combustion are easy to occur after the flammable gas contacts with sparks of a motor, and the conventional fan is limited in application, so that a pneumatic fan with fireproof and explosion-proof functions is required to be designed so as to solve the problems in the prior art.

Disclosure of Invention

The utility model aims to solve the technical problems that: overcomes the defects in the prior art and provides a pneumatic fan.

In order to solve the problems, the utility model adopts the following technical scheme:

the pneumatic fan comprises a frame, wherein a fan and a pneumatic motor are fixedly arranged on the frame respectively; the fan comprises a shell, fan blades and a rotating shaft, wherein the rotating shaft is arranged in the shell and is in transmission connection with an output shaft of the pneumatic motor.

According to the technical scheme, the fan shell is further preferably provided with a shaft hole, a transmission shaft is transversely arranged in the shaft hole, the transmission shaft is connected with the shell bearing, a flange plate is arranged at the outer end of the transmission shaft, the flange plate is fixedly connected with the output shaft of the pneumatic motor, and the inner end of the transmission shaft is in transmission connection with the rotating shaft.

Further, a first bevel gear is arranged on the rotating shaft, a second bevel gear is arranged on the transmission shaft, and the first bevel gear is connected with the second bevel gear in a meshed mode.

Further, the rotating shaft and the first bevel gear are respectively provided with a first key groove, a first spline is arranged in the first key groove, a first annular groove is formed in the shaft surface of the rotating shaft, a first clamping spring is arranged in the first annular groove, and the first clamping spring is used for limiting the axial movement of the first bevel gear.

Further, the transmission shaft and the second bevel gear are respectively provided with a second key groove, a second spline is arranged in the second key groove, a second annular groove is arranged on the shaft surface of the transmission shaft, a second clamping spring is arranged in the second annular groove, and the second clamping spring is used for limiting the axial movement of the second bevel gear.

Further, an air inlet is formed in the pneumatic motor, a filter is arranged on an outer side pipeline of the air inlet, an air outlet is formed in the pneumatic motor, and the air outlet is in through connection with an inner cavity of the fan.

Further, the frame is a square bracket, and the frame is made of C-shaped channel steel through welding.

Furthermore, the outer sides of the frame, the fan and the pneumatic motor are coated with an anti-rust coating.

Further, a protective cover is arranged on the outer side of the transmission shaft.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides a pneumatic fan, wherein a fan body and a pneumatic motor in the fan device adopt a split type structural design, and the pneumatic fan has the characteristics of compact structure, small volume, light weight, simple operation, convenient maintenance, good safety performance and the like, can be widely applied to environments with higher underground gas concentration of coal mines for being used as a drawing type local fan, can also be used for being used for ventilating oil reservoirs with higher oil gas content and ship bottom cabins, and can also be used for being used for local ventilation in metallurgical mines, tunnel engineering and the like.

Drawings

FIG. 1 is a schematic diagram of the structure of the device of the present utility model;

FIG. 2 is a schematic view of the structure of the transmission shaft and the rotation shaft of the device of the present utility model;

FIG. 3 is a schematic view of a partial enlarged structure of the device A of the present utility model;

fig. 4 is a schematic view of a partial enlarged structure of the device B of the present utility model.

In the figure: 1. the fan comprises a frame, 2, a fan, 2a, a casing, 2b, fan blades, 2c, a rotating shaft, 2d, a first bevel gear, 2e, a first key groove, 2f, a first spline, 2g, a first annular groove, 2h, a first clamp spring, 3, a pneumatic motor, 3a, a second bevel gear, 3b, an air inlet, 3c, a filter, 3e, a second key groove, 3f, a second spline, 3g, a second annular groove, 3h, a second clamp spring, 4, a transmission shaft, 5 and a protective cover.

Detailed Description

The following examples are set forth in order to more particularly describe the principles of the present utility model, and are intended to provide a more thorough description of the present utility model.

The terms "inner end", "outer end", "first bevel", "second bevel", "first keyway", "second keyway", "first annular groove", "second annular groove", "first snap spring", "second snap spring" are merely convenient labels, rather than limiting names of components, or limiting numbers, between similar or similar components or elements of the apparatus of the present utility model, are merely relational terms determined to facilitate a description of the structural relationships of the components or elements of the present disclosure, and do not denote any one of the components or elements of the present disclosure, but are not to be construed as limiting of the present disclosure.

As shown in fig. 1-4, the utility model provides a pneumatic fan, which comprises a frame 1, wherein a fan 2 and a pneumatic motor 3 are fixedly arranged on the frame 1 respectively; the fan 2 comprises a shell 2a, fan blades 2b and a rotating shaft 2c, wherein the rotating shaft 2c is arranged in the shell 2a, and the rotating shaft 2c is in transmission connection with an output shaft of the pneumatic motor 3. In the embodiment of the utility model, the power source of the fan 2 is driven by the pneumatic motor 3, so that the fan can be applied to the environment with higher gas concentration in the underground coal mine as a drawing type local fan, can also be applied to an oil depot and a ship bottom cabin with higher oil gas content as ventilation, and can also be applied to the local ventilation of metallurgical mines, tunnel engineering and the like.

As a further preferable embodiment, the fan housing 2a is provided with a shaft hole, a transmission shaft 4 is transversely arranged in the shaft hole, the transmission shaft 4 is in bearing connection with the casing 2a, a flange plate is arranged at the outer end of the transmission shaft 4, the flange plate is fixedly connected with the output shaft of the air motor 3, and the inner end of the transmission shaft 4 is in transmission connection with the rotating shaft 2 c. In the embodiment of the utility model, one side of the fan shell 2a is provided with a shaft hole, a bearing is arranged in the shaft hole, the transmission shaft 4 is arranged in the bearing in a penetrating way, the transmission shaft 4 is connected with the fan shell 2a in a bearing way, two ends of the transmission shaft 4 are respectively connected with an output shaft of the pneumatic motor 2 and the rotating shaft 2c in a transmission way, and the pneumatic motor 3 transmits power to the rotating shaft 2c through the transmission shaft 4 so as to drive the fan blade 2b to rotate, so that the purpose of exhausting is achieved. In the embodiment of the utility model, the transmission shaft 4 and the fan 2 are integrally connected, so that the connection with the pneumatic motor 3 is facilitated. The design can be convenient to overhaul and install.

As a further preferred embodiment, a first bevel gear 2d is provided on the rotating shaft 2c, a second bevel gear 3a is provided on the transmission shaft 4, and the first bevel gear 2d is engaged with the second bevel gear 3a. In the embodiment of the present utility model, the rotation shaft 2c is vertically disposed with the transmission shaft 4, so that a bevel gear transmission mode is adopted for connection.

As a further preferred embodiment, the rotating shaft 2c and the first bevel gear 2d are respectively provided with a first key groove 2e, a first spline 2f is arranged in the first key groove 2e, a first annular groove 2g is arranged on the axial surface of the rotating shaft 2c, a first clamping spring 2h is arranged in the first annular groove 2g, and the first clamping spring 2h is used for limiting the axial movement of the first bevel gear 2d. In the embodiment of the utility model, a boss is arranged at the joint of the rotating shaft 2c and the first bevel gear 2d, and during processing, the diameter size of the rotating shaft 2c is larger than that of the first bevel gear 2d, and the end part of the rotating shaft 2c is processed into a shaft head with the same inner diameter as that of the first bevel gear 2d for fixing the first bevel gear 2d. The first key groove 2e is provided on the shaft surface of the rotation shaft 2c and the inner shaft surface of the first bevel gear 2d, and when the first key groove 2e is machined, the length of the first key groove 2e is smaller than the thickness of the first bevel gear 2d, so that the first spline 2f can be prevented from being scratched out of the first key groove 2 e.

As a further preferable embodiment, the transmission shaft 4 and the second bevel gear 3a are respectively provided with a second key groove 3e, a second spline 3f is arranged in the second key groove 3e, a second ring groove 3g is arranged on the shaft surface of the transmission shaft 4, a second clamping spring 3h is arranged in the second ring groove 3g, and the second clamping spring 3h is used for limiting the axial movement of the second bevel gear 3a. In the embodiment of the utility model, a boss is arranged at the joint of the transmission shaft 4 and the second bevel gear 3a, and when in processing, the diameter size of the transmission shaft 4 is larger than the inner diameter size of the bevel gear 2d, and the end part of the transmission shaft 4 is processed into a shaft head with the same inner diameter as the bevel gear 3a for fixing the second bevel gear 3a. The second key groove 3e is arranged on the shaft surface of the transmission shaft 4 and the inner shaft surface of the second bevel gear 3a, and when the second key groove 3e is machined, the length of the second key groove 3e is smaller than the thickness of the second bevel gear 3a, so that the second spline 3f can be prevented from being scratched out of the second key groove 3 e.

As a further preferred embodiment, the air motor 3 is provided with an air inlet 3b, and a filter 3c is arranged on a pipeline outside the air inlet 3 b.

As a further preferable embodiment, the frame 1 is a square bracket, and the frame 1 is made of C-shaped channel steel by welding.

As a further preferred embodiment, the outer sides of the frame 1, the fan 2 and the air motor 3 are coated with an anti-rust coating.

As a further preferred embodiment, a protective cover 5 is arranged outside the transmission shaft 4. In the embodiment of the utility model, the protection cover 5 is additionally arranged on the outer side of the transmission shaft 4 and is used for isolating the transmission shaft 4 of the rotating mechanism from the outer environment, so that the working safety and reliability of the device can be improved.

The above embodiments are not intended to limit the present utility model, however, and the present utility model is not limited to the above examples, but is also intended to be within the scope of the present utility model.

Claims

1. The utility model provides a pneumatic fan, includes frame (1), its characterized in that:

a fan (2) and a pneumatic motor (3) are fixedly arranged on the frame (1) respectively; the fan (2) comprises a shell (2 a), fan blades (2 b) and a rotating shaft (2 c), wherein the rotating shaft (2 c) is arranged in the shell (2 a), and the rotating shaft (2 c) is in transmission connection with an output shaft of the pneumatic motor (3); the motor is characterized in that a shaft hole is formed in the machine shell (2 a), a transmission shaft (4) is transversely arranged in the shaft hole, the transmission shaft (4) is connected with the machine shell (2 a) through a bearing, a flange plate is arranged at the outer end of the transmission shaft (4), the flange plate is fixedly connected with an output shaft of the pneumatic motor (3), and the inner end of the transmission shaft (4) is in transmission connection with the rotating shaft (2 c); the rotary shaft (2 c) is provided with a first bevel gear (2 d), the transmission shaft (4) is provided with a second bevel gear (3 a), and the first bevel gear (2 d) is in meshed connection with the second bevel gear (3 a).

2. A pneumatic fan according to claim 1, wherein:

the novel bevel gear is characterized in that a first key groove (2 e) is formed in the rotating shaft (2 c) and the first bevel gear (2 d) respectively, a first spline (2 f) is arranged in the first key groove (2 e), a first annular groove (2 g) is formed in the axial surface of the rotating shaft (2 c), a first clamping spring (2 h) is arranged in the first annular groove (2 g), and the first clamping spring (2 h) is used for limiting the axial movement of the first bevel gear (2 d).

3. A pneumatic fan according to claim 1, wherein:

the transmission shaft (4) and the second bevel gear (3 a) are respectively provided with a second key groove (3 e), a second spline (3 f) is arranged in the second key groove (3 e), a second annular groove (3 g) is arranged on the shaft surface of the transmission shaft (4), a second clamp spring (3 h) is arranged in the second annular groove (3 g), and the second clamp spring (3 h) is used for limiting the axial movement of the second bevel gear (3 a).

4. A pneumatic fan according to claim 1, wherein:

an air inlet (3 b) is formed in the pneumatic motor (3), and a filter (3 c) is arranged on a pipeline outside the air inlet (3 b).

5. A pneumatic fan according to claim 1, wherein:

the frame (1) is a square bracket, and the frame (1) is formed by welding C-shaped channel steel.

6. A pneumatic fan according to claim 1, wherein:

the outer sides of the frame (1), the fan (2) and the pneumatic motor (3) are coated with an anti-rust coating.

7. A pneumatic fan according to claim 1, wherein:

a protective cover (5) is arranged outside the transmission shaft (4).