Axial flow fan for mine

Abstract

The utility model relates to the technical field of axial flow fans, and discloses an axial flow fan for a mine, which comprises a casing, the casing is in a hollow circular tube shape, a rotating motor is fixedly connected in a cavity of the casing, a main fan shaft is fixedly connected on the wall surface of the rotating motor, main fan blades are fixedly connected on the wall surface of the main fan shaft, and a synergistic structure is arranged on the wall surface of the casing. The synergistic structure comprises an air inlet pipe, a driven fan shaft and a driven fan, the air inlet pipe is fixedly connected to the front wall face of the machine shell, the driven fan shaft is rotationally connected to the wall face of the air inlet pipe, the driven fan is fixedly connected with the driven fan shaft, and the synergistic structure can improve the air inlet amount of the device. Due to the fact that the synergistic structure drives the auxiliary fan to rotate through the wind power sucked in when the main fan blades rotate, the auxiliary fan sucks more wind into the air inlet pipe cavity, and therefore more wind power is sucked in through the wind power.

Description

Technical Field

[0001] The utility model belongs to the technical field of axial flow fans, and in particular relates to an axial flow fan for mines. Background Art

[0002] The prior art (application number: CN202320734756.3) discloses an axial flow fan, including a fan protective shell, a front side snap-connected with an air outlet filter, a rear side snap-connected with an air inlet filter, an inner side sliding connection with a connecting frame one, and a side snap-connected with a clip strip on the connecting frame one.

[0003] The motor in the prior art drives the fan in the device to rotate, thereby guiding the wind outside the device to the desired position. Although the prior art can draw the wind into the device, the suction force of the prior art when only a single rotating fan is used to draw the wind is weak, resulting in a low air intake volume of the device.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0006] An axial flow fan for mines comprises a casing, which is in the shape of a hollow circular tube. A rotating motor is fixedly connected to the cavity of the casing, a main fan shaft is fixedly connected to the wall of the rotating motor, and main fan blades are fixedly connected to the wall of the main fan shaft. The wall of the casing is provided with an efficiency-enhancing structure, which comprises an air inlet pipe, a slave fan shaft and a slave fan. The air inlet pipe is fixedly connected to the front wall of the casing, the slave fan shaft is rotatably connected to the wall of the air inlet pipe, and the slave fan is fixedly connected to the slave fan shaft. The efficiency-enhancing structure can increase the air intake volume of the device.

[0007] As a preferred embodiment of the utility model, the top section of the air inlet duct is an isosceles trapezoid, the air inlet duct cavity is hollow, the front wall section of the air inlet duct is circular, the front wall of the air inlet duct has a symmetrical slope, and the cavity of the air inlet duct is connected to the cavity of the casing.

[0008] As a preferred embodiment of the utility model, the efficiency-enhancing structure also includes an air inlet groove, a protective rod, an air suction groove and a base rod. The air inlet groove is symmetrically arranged on the slope of the front wall of the air inlet pipe, the protective rod is fixedly connected in the air inlet groove, the air suction groove is arranged on the front wall of the air inlet pipe, and the base rod is also fixedly connected in the air inlet groove, and is rotatably connected to the wall of the base rod from the fan shaft.

[0009] As a preferred embodiment of the utility model, the air inlet groove is a circular groove, the protective rod is a rectangular rod, a plurality of protective rods are fixedly connected to the cavity of the air inlet groove, and the plurality of protective rods are evenly distributed in the air inlet groove, a plurality of slave fans are fixedly connected to the wall of the slave fan shaft, and the plurality of slave fans are distributed in a circular array on the wall of the slave fan shaft, the base rod, the slave fan shaft and the slave fans are symmetrically arranged on the oblique surface of the front wall of the air inlet duct, the air suction groove is a rectangular groove, the air suction groove is connected to the air inlet duct cavity, and the bottom of the cavity of the casing is flush with the bottom of the air suction groove.

[0010] As a preferred embodiment of the utility model, a water leakage groove is provided through the bottom of the cavity of the casing, the water leakage groove is a circular groove, and a plurality of water leakage grooves are provided on the wall of the casing, and the plurality of water leakage grooves are evenly distributed on the bottom of the casing.

[0011] As a preferred embodiment of the utility model, a bracket is fixedly connected to the cavity of the casing, a support ring is fixedly connected to the wall of the bracket, a rotating shaft is rotatably connected to the wall of the support ring, the front wall of the rotating shaft is fixedly connected to the rear wall of the main fan shaft, the rear wall of the rotating shaft is fixedly connected to the rotating motor, and a protective cover is fixedly connected to the rear wall of the support ring.

[0012] As a preferred embodiment of the utility model, the support ring is in the shape of a hollow ring, the rotating shaft is rotatably connected in the cavity of the support ring, the protective cover is in the shape of a hollow cylinder with an open front wall, and the rotating motor is in the cavity of the protective cover and fixedly connected to the support ring.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The air intake of the device can be increased by setting a performance enhancement structure, because the performance enhancement structure uses the wind force sucked in when the main fan blades rotate to drive the slave fan to rotate, and the slave fan then sucks more wind into the air inlet cavity, thereby utilizing the wind force to suck in more wind force, thereby increasing the air intake of the device. Therefore, compared with the prior art, the air intake of this solution is larger.

[0015] 2. By setting up a drain groove, water can be directly discharged from the device when it accumulates in the device, thereby preventing the accumulated water from affecting the operation of the device or damaging the circuit in the device. The protective cover can protect the rotating motor to prevent dust or rain from affecting the circuit of the rotating motor, thereby improving the service life of the device.

[0016] The specific implementation modes of the present utility model are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the attached picture:

[0018] Figure 1 It is a front perspective view of the utility model;

[0019] Figure 2This is a rear bottom view of the utility model;

[0020] Figure 3 This is an exploded view of the air inlet pipe wall structure of the utility model;

[0021] Figure 4 This is an exploded view of the internal structure of the casing cavity of the utility model;

[0022] Figure 5 This is a cross-sectional view of the casing and air inlet duct of the utility model.

[0023] In the figure: 20, casing; 21, bracket; 22, rotating shaft; 23, supporting ring; 24, main fan shaft; 25, main fan blades; 26, rotating motor; 27, protective cover; 30, air inlet pipe; 31, air inlet slot; 32, protective rod; 33, air suction slot; 34, base rod; 35, secondary fan shaft; 36, secondary fan; 37, water leakage slot. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0025] like Figure 1 , Figure 2 and Figure 4 As shown, an axial flow fan for mines includes a casing 20, which is in the shape of a hollow circular tube. A rotating motor 26 is fixedly connected to the cavity of the casing 20, a main fan shaft 24 is fixedly connected to the wall of the rotating motor 26, a main fan blade 25 is fixedly connected to the wall of the main fan shaft 24, and the rotating motor 26 is electrically connected to a power source. This is an existing technology and will not be described in detail here.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, the wall surface of the casing 20 is provided with an efficiency-enhancing structure, which includes an air inlet duct 30, a slave fan shaft 35 and a slave fan 36. The air inlet duct 30 is fixedly connected to the front wall surface of the casing 20, the slave fan shaft 35 is rotatably connected to the wall surface of the air inlet duct 30, and the slave fan 36 is fixedly connected to the slave fan shaft 35. The efficiency-enhancing structure can increase the air intake volume of the device.

[0027] like Figure 1 , Figure 2 and Figure 3As shown, the top section of the air inlet pipe 30 is an isosceles trapezoid, the air inlet pipe 30 is hollow, the front wall section of the air inlet pipe 30 is circular, the front wall of the air inlet pipe 30 has a symmetrical slope, the air inlet pipe 30 is connected to the housing 20, the efficiency-enhancing structure also includes an air inlet slot 31, a protective rod 32, an air suction slot 33 and a base rod 34, the air inlet slot 31 is symmetrically penetrated and opened on the front wall slope of the air inlet pipe 30, the protective rod 32 is fixedly connected to the air inlet slot 31, the air suction slot 33 is opened on the front wall of the air inlet pipe 30, the base rod 34 is also fixedly connected to the air inlet slot 31, and the fan shaft 35 is rotatably connected to the fan shaft 35. On the wall surface of the base rod 34, the air inlet groove 31 is a circular groove, the protective rod 32 is a rectangular rod, a plurality of protective rods 32 are fixedly connected to the cavity of the air inlet groove 31, and the plurality of protective rods 32 are evenly distributed in the air inlet groove 31, a plurality of slave fans 36 are fixedly connected to the wall surface of the slave fan shaft 35, and the plurality of slave fans 36 are distributed in a circular array on the wall surface of the slave fan shaft 35, the base rod 34, the slave fan shaft 35 and the slave fans 36 are symmetrically arranged on the oblique surface of the front wall surface of the air inlet pipe 30, the air suction groove 33 is a rectangular groove, the air suction groove 33 is connected to the cavity of the air inlet pipe 30, and the bottom of the cavity of the housing 20 is flush with the bottom of the air suction groove 33;

[0028] When in use, the power is turned on, the rotating motor 26 can drive the rotating shaft 22 to rotate, the rotating shaft 22 can drive the main fan shaft 24 and the main fan blades 25 to rotate, and when the main fan blades 25 rotate, the wind on the front wall of the device can be sucked into the air inlet pipe 30 cavity from the air suction groove 33 or the air inlet groove 31 and enter the cavity of the housing 20, and finally discharged from the rear wall of the housing 20. When the wind enters the air inlet groove 31, it drives the secondary fan 36 to rotate, and the secondary fan 36 can drive the secondary fan shaft 35 to rotate. When the secondary fan 36 rotates, it can suck more wind from the air inlet groove 31 into the cavity of the air inlet pipe 30;

[0029] To sum up, by setting up an efficiency-enhancing structure, the air intake of the device can be increased, because the efficiency-enhancing structure uses the wind force sucked in when the main fan blades 25 rotate to drive the slave fan 36 to rotate, and the slave fan 36 then sucks more wind into the air inlet pipe 30 cavity, thereby utilizing the wind force to suck in more wind force, thereby increasing the air intake of the device. Therefore, compared with the prior art, the air intake of this solution is larger.

[0030] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, a water leakage groove 37 is provided through the bottom of the cavity of the casing 20, and the water leakage groove 37 is a circular groove. A plurality of water leakage grooves 37 are provided on the wall of the casing 20, and the plurality of water leakage grooves 37 are evenly distributed at the bottom of the casing 20. A bracket 21 is fixedly connected to the cavity of the casing 20, and a support ring 23 is fixedly connected to the wall of the bracket 21. The wall of the support ring 23 is rotatably connected to the rotating shaft 22. The front wall of the rotating shaft 22 is fixedly connected to the rear wall of the main fan shaft 24, and the rear wall of the rotating shaft 22 is fixedly connected to the rotating motor 26. The rear wall of the support ring 23 is fixedly connected to the protective cover 27, and the support ring 23 is in a hollow ring shape. The rotating shaft 22 is rotatably connected in the cavity of the support ring 23. The protective cover 27 is a hollow cylinder with an open front wall. The rotating motor 26 is in the cavity of the protective cover 27 and is fixedly connected to the support ring 23.

[0031] In actual use, when there is water in the cavity of the housing 20, it can be directly drained from the drain groove 37;

[0032] In summary, by providing a water leakage groove 37, water can be directly discharged from the device when it accumulates in the device, thereby preventing the accumulated water from affecting the operation of the device or damaging the circuit in the device. The protective cover 27 can protect the rotating motor 26 to prevent dust or rain from affecting the circuit of the rotating motor 26, thereby improving the service life of the device.

[0033] Working principle: turn on the power, rotate the motor 26 to drive the rotating shaft 22 to rotate, the rotating shaft 22 can drive the main fan shaft 24 and the main fan blades 25 to rotate, and when the main fan blades 25 rotate, the wind on the front wall of the device can be sucked into the air inlet pipe 30 cavity from the suction groove 33 or the air inlet groove 31 and enter the cavity of the casing 20, and finally discharged from the rear wall of the casing 20. When the wind enters the air inlet groove 31, it will drive the slave fan 36 to rotate, and the slave fan 36 can drive the slave fan shaft 35 to rotate. When the slave fan 36 rotates, it can suck more wind from the air inlet groove 31 into the cavity of the air inlet pipe 30.

[0034] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. An axial flow fan for use in a mine, comprising a casing (20), the casing (20) being in the shape of a hollow circular tube, a rotating motor (26) being fixedly connected in the cavity of the casing (20), a main fan shaft (24) being fixedly connected to the wall surface of the rotating motor (26), and a main fan blade (25) being fixedly connected to the wall surface of the main fan shaft (24), characterized in that: The wall surface of the casing (20) is provided with an efficiency-enhancing structure, which comprises an air inlet pipe (30), a slave fan shaft (35) and a slave fan (36); the air inlet pipe (30) is fixedly connected to the front wall surface of the casing (20); the slave fan shaft (35) is rotatably connected to the wall surface of the air inlet pipe (30); the slave fan (36) is fixedly connected to the slave fan shaft (35); and the efficiency-enhancing structure can increase the air intake volume of the device.

2. The axial flow fan for mine according to claim 1, characterized in that: The top section of the air inlet pipe (30) is in the shape of an isosceles trapezoid; the air inlet pipe (30) is hollow; the front wall of the air inlet pipe (30) is in the shape of a circle; the front wall of the air inlet pipe (30) has symmetrical slopes; and the interior of the air inlet pipe (30) is in communication with the interior of the housing (20).

3. The axial flow fan for mine according to claim 1, characterized in that: The efficiency-enhancing structure further comprises an air inlet groove (31), a protective rod (32), an air suction groove (33) and a base rod (34); the air inlet groove (31) is symmetrically penetrated and arranged on the front wall slope of the air inlet pipe (30); the protective rod (32) is fixedly connected in the air inlet groove (31); the air suction groove (33) is arranged on the front wall surface of the air inlet pipe (30); the base rod (34) is also fixedly connected in the air inlet groove (31) and is rotatably connected to the wall surface of the base rod (34) from the fan shaft (35).

4. The axial flow fan for mine according to claim 3, characterized in that: The air inlet groove (31) is a circular groove, the protection rod (32) is a rectangular rod, a plurality of protection rods (32) are fixedly connected in the cavity of the air inlet groove (31), and the plurality of protection rods (32) are evenly distributed in the air inlet groove (31), a plurality of slave fans (36) are fixedly connected to the wall surface of the slave fan shaft (35), and the plurality of slave fans (36) are distributed in a circular array on the wall surface of the slave fan shaft (35), the base rod (34), the slave fan shaft (35) and the slave fans (36) are symmetrically arranged on the inclined surface of the front wall of the air inlet pipe (30), the air suction groove (33) is a rectangular groove, the air suction groove (33) is connected to the cavity of the air inlet pipe (30), and the bottom of the cavity of the housing (20) is flush with the bottom of the air suction groove (33).

5. The axial flow fan for mine according to claim 1, characterized in that: A water leakage groove (37) is provided through the bottom of the cavity of the casing (20), and the water leakage groove (37) is a circular groove. A plurality of water leakage grooves (37) are provided on the wall surface of the casing (20), and the plurality of water leakage grooves (37) are evenly distributed on the bottom of the casing (20).

6. The axial flow fan for mine according to claim 1, characterized in that: A bracket (21) is fixedly connected in the cavity of the housing (20), a support ring (23) is fixedly connected to the wall surface of the bracket (21), a rotating shaft (22) is rotatably connected to the wall surface of the support ring (23), a front wall surface of the rotating shaft (22) is fixedly connected to the rear wall surface of the main fan shaft (24), a rear wall surface of the rotating shaft (22) is fixedly connected to a rotating motor (26), and a protective cover (27) is fixedly connected to the rear wall surface of the support ring (23).

7. The axial flow fan for mine according to claim 6, characterized in that: The support ring (23) is in the shape of a hollow ring, the rotating shaft (22) is rotatably connected in the cavity of the support ring (23), the protective cover (27) is in the shape of a hollow cylinder with an open front wall, and the rotating motor (26) is in the cavity of the protective cover (27) and is fixedly connected to the support ring (23).

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