CN219754837U - Two-stage fan blade local ventilator driven by permanent magnet motor - Google Patents

Abstract

The utility model discloses a two-stage fan blade local ventilator driven by a permanent magnet motor, and belongs to the field of ventilators. The two-stage fan blade local ventilator driven by the permanent magnet motor comprises a ventilation pipeline and a ventilation mechanism arranged in the ventilation pipeline, wherein two ends of the ventilation pipeline are respectively provided with an air inlet and an air outlet, the ventilation mechanism comprises a double-output-shaft motor, and the double-output-shaft motor is arranged in the ventilation pipeline; according to the utility model, through the arrangement of the double-output-shaft motor, the primary impeller and the secondary impeller, the dust-containing air entering the ventilating duct can be pressurized twice, and the discharge efficiency of the dust-containing air is improved.

Description

Two-stage fan blade local ventilator driven by permanent magnet motor

Technical Field

The utility model relates to the field of ventilators, in particular to a two-stage fan blade local ventilator driven by a permanent magnet motor.

Background

In order to ventilate and ventilate a mine, so that the air safety in the mine is ensured, a ventilation device is arranged in the mine, main equipment for mine ventilation is a ventilator, and the problems of low operation efficiency, high operation noise and the like of the traditional ventilator generally exist, so that a permanent magnet motor-driven two-stage fan blade local ventilator with high efficiency, low noise, high wind pressure and energy conservation needs to be developed and developed.

The utility model discloses a permanent magnet motor local ventilator (application number: 200820158997.3) in the prior art, which is a disrotatory fan formed by sequentially connecting a current collector, a front silencer, a primary fan, a disrotatory secondary fan and a rear silencer, wherein the primary fan and the disrotatory secondary fan are respectively formed by connecting a permanent magnet motor with fan blades, and mainly solves the technical problems that the existing local ventilator adopts a frequency converter to regulate speed, has poor working reliability, large volume, high cost, high price, weak electromagnetic interference resistance and the like.

However, this application still suffers from the following disadvantages: this application adopts two sets of motors to drive two sets of impellers and rotates, and the power consumption is big, and use cost is high, moreover, needs manual regulation just can avoid two sets of impellers to have the inconsistent phenomenon of rotation frequency, and the exhaust efficiency of the inside air of well is lower.

Disclosure of Invention

The utility model aims to solve the problems in the background art, and provides a two-stage fan blade local ventilator driven by a permanent magnet motor.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a permanent magnet motor drive two-stage fan blade local fan, includes the air pipe and sets up the ventilation mechanism in the air pipe, and the air pipe both ends are air intake and air outlet respectively, and ventilation mechanism includes two output shaft motors, and two output shaft motors are installed inside the air pipe, are fixed with one-level impeller and second grade impeller respectively on two output shafts of two output shaft motors.

Preferably, still include noise reduction mechanism, noise reduction mechanism includes first amortization cavity, second amortization cavity and third amortization cavity, and first amortization cavity sets up the outer wall at the air pipe, and the second amortization cavity sets up the one end that is close to the air intake inside the air pipe, and the third amortization cavity sets up the one end that is close to the air exit inside the air pipe, and first amortization cavity, second amortization cavity and the inside amortization filler that all fills of third amortization cavity can effectively reduce the noise that air flow process and two output shaft motor 4 work produced.

Preferably, the primary impeller is close to the air inlet of the ventilation pipeline, and the secondary impeller is close to the air outlet of the ventilation pipeline, so that the dust-containing gas discharging efficiency is further improved.

Preferably, the air inlet of the ventilation duct is provided in a horn shape.

Preferably, one end of the second silencing chamber close to the air inlet is arranged to be hemispherical, the third silencing chamber is arranged to be conical, the section of the third silencing chamber is gradually reduced along the direction of the air outlet, so that the air outlet forms a channel with a horn-shaped section, and the discharging efficiency of dust-containing gas is further improved.

Preferably, the two ends of the ventilating duct are provided with isolation covers, and the two sets of isolation covers can isolate external broken stones or small organisms with moving capability.

Preferably, the bottom of the ventilating duct is provided with a plurality of groups of supporting seats, and the supporting seats can stably support the ventilating duct.

Preferably, the ventilating duct is provided with a wiring cavity for supplying power to the double-output shaft motor.

Compared with the prior art, the utility model provides a two-stage fan blade local ventilator driven by a permanent magnet motor, which has the following beneficial effects:

1. this permanent magnet motor drive two-stage fan blade local fan replaces traditional motor through the dual output shaft motor, and the dual output shaft motor has that work efficiency is high, energy-conserving effectual, characteristics that the noise is low, and one-level impeller rotates simultaneously with the second grade impeller and can carry out twice pressure boost to the air that gets into in the air pipe, has increased the work efficiency to well ventilation, and the noise that air flow process and dual output shaft motor work produced can effectively be reduced in the setting of first amortization cavity, second amortization cavity and third amortization cavity and amortization filler.

2. This permanent magnet motor drive two-stage fan blade local fan, in order to further increase dust-laden gas's exhaust efficiency, can set up the air intake of air pipe into loudspeaker form, set up the cavity cross-section between air intake and the second amortization cavity of air pipe into loudspeaker form, the cross-section of cavity between air outlet and the third amortization cavity of air pipe sets up to loudspeaker form.

According to the utility model, through the arrangement of the double-output-shaft motor, the primary impeller and the secondary impeller, the dust-containing air entering the ventilating duct can be pressurized twice, and the discharge efficiency of the dust-containing air is improved.

Drawings

FIG. 1 is a schematic diagram of a specific embodiment of the present utility model;

FIG. 2 is a schematic diagram of a dual output shaft motor in accordance with an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of an air inlet of a ventilation pipeline in the specific embodiment.

In the figure: 1. a ventilation duct; 2. a first sound deadening chamber; 201. a second sound deadening chamber; 202. a third sound deadening chamber; 3. a wiring cavity; 4. a double output shaft motor; 5. an isolation cover; 6. a support base; 7. a primary impeller; 8. a secondary impeller.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Example 1:

referring to fig. 1-3, a permanent magnet motor driven two-stage fan blade local ventilator comprises a ventilation pipeline 1 and a ventilation mechanism arranged in the ventilation pipeline 1, wherein two ends of the ventilation pipeline 1 are respectively an air inlet and an air outlet, the ventilation mechanism comprises a double-output shaft motor 4, the double-output shaft motor 4 is arranged in the ventilation pipeline 1, two output shafts of the double-output shaft motor 4 are respectively fixed with a first-stage impeller 7 and a second-stage impeller 8, the local ventilator is stably placed on the ground in a mine, the two output shafts of the double-output shaft motor 4 simultaneously drive the first-stage impeller 7 and the second-stage impeller 8 to rotate, air in a well enters from the air inlet of the ventilation pipeline 1 under the action of the first-stage impeller 7, the second-stage impeller 8 accelerates and discharges the air entering the ventilation pipeline 1, the ventilation efficiency of the well is increased, and the other needs to be explained, the double output shaft motor 4 in the above embodiment is a permanent magnet motor, is a mature prior art, has the characteristics of high working efficiency, good energy saving effect and low noise compared with the traditional single shaft motor, but is not limited to the motor, the ventilating duct 1 is provided with a wiring cavity 3 for supplying power to the double output shaft motor 4, the wiring cavity 3 is used for supplying power to the double output shaft motor 4 in a circuit connection mode, the double output shaft motor 4 is started by controlling a starting switch, the double output shaft motor further comprises a silencing mechanism, the silencing mechanism comprises a first silencing cavity 2, a second silencing cavity 201 and a third silencing cavity 202, the first silencing cavity 2 is arranged on the outer wall of the ventilating duct 1, the second silencing cavity 201 is arranged at one end, close to an air inlet, of the ventilating duct 1, the third silencing cavity 202 is arranged at one end, close to an air outlet, of the ventilating duct 1, the first silencing chamber 2, the second silencing chamber 201 and the third silencing chamber 202 are filled with silencing fillers, noise generated in the air flowing process and the operation of the double-output-shaft motor 4 can be effectively reduced through the arrangement of the first silencing chamber 2, the second silencing chamber 201 and the third silencing chamber 202 and the silencing fillers, and the silencing fillers are preferably made of silencing cotton, but are not limited to the materials.

Example 2:

referring to fig. 1 and 2, a permanent magnet motor drives a two-stage fan blade local ventilator, which is basically the same as that of embodiment 1, further, a first-stage impeller 7 is close to an air inlet of a ventilation pipeline 1, a second-stage impeller 8 is close to an air outlet of the ventilation pipeline 1, and after dust-containing air enters the ventilation pipeline 1, the dust-containing air is pressurized for the first time by the first-stage impeller 7 rotating at a high speed and then is pressurized again by the second-stage impeller 8, so that the exhaust efficiency of dust-containing gas is further increased.

Example 3:

referring to fig. 1 and 3, a two-stage fan blade local ventilator driven by a permanent magnet motor is basically the same as that of embodiment 1, further, one end of a second silencing chamber 201 close to an air inlet is provided with a hemispherical shape, a third silencing chamber 202 with a hemispherical shape is provided with a conical shape, the air inlet can be formed into a channel with a horn-shaped cross section by the arrangement of the second silencing chamber 201 of the third silencing chamber 202, the cross section of the conical third silencing chamber 202 is gradually reduced along the direction of an air outlet, the air outlet is formed into a channel with a horn-shaped cross section, and the discharging efficiency of dust-containing gas is further increased.

Example 4:

referring to fig. 1 and 3, a two-stage fan blade local ventilator driven by a permanent magnet motor is basically the same as that of embodiment 1, further, isolation covers 5 may be disposed at two ends of the ventilation pipeline 1 to isolate external broken stones or small organisms with mobility, and multiple groups of support seats 6 may be disposed at the bottom of the ventilation pipeline 1 to stably support the ventilation pipeline 1.

According to the utility model, through the arrangement of the double-output-shaft motor 4, the primary impeller 7 and the secondary impeller 8, the dust-containing air entering the ventilation pipeline 1 can be pressurized twice, the exhaust efficiency of the dust-containing air is improved, and compared with the traditional single-shaft motor, the double-output-shaft motor 4 has the characteristics of high working efficiency, good energy saving effect and low noise, and the noise generated during the operation of the ventilator can be further reduced through the arrangement of the silencing mechanism.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (8)

1. The utility model provides a permanent magnet motor drive two-stage fan blade local fan, includes air pipe (1) and sets up the ventilation mechanism in air pipe (1), air pipe (1) both ends are air intake and air outlet respectively, a serial communication port, ventilation mechanism includes double output shaft motor (4), double output shaft motor (4) are installed inside air pipe (1), be fixed with one-level impeller (7) and second grade impeller (8) on two output shafts of double output shaft motor (4) respectively.

2. The two-stage fan blade local ventilator driven by the permanent magnet motor according to claim 1, further comprising a silencing mechanism, wherein the silencing mechanism comprises a first silencing chamber (2), a second silencing chamber (201) and a third silencing chamber (202), the first silencing chamber (2) is arranged on the outer wall of the ventilating duct (1), the second silencing chamber (201) is arranged at one end, close to an air inlet, of the inside of the ventilating duct (1, the third silencing chamber (202) is arranged at one end, close to an air outlet, of the inside of the ventilating duct (1, and silencing fillers are filled in the first silencing chamber (2), the second silencing chamber (201) and the third silencing chamber (202).

3. The two-stage fan blade local ventilator driven by the permanent magnet motor according to claim 1, wherein the primary impeller (7) is close to an air inlet of the ventilation pipeline (1), and the secondary impeller (8) is close to an air outlet of the ventilation pipeline (1).

4. A two-stage fan blade local ventilator driven by a permanent magnet motor according to claim 1, wherein the air inlet of the ventilation pipeline (1) is arranged in a horn shape.

5. The two-stage fan blade local ventilator driven by the permanent magnet motor according to claim 2, wherein one end of the second silencing chamber (201) close to the air inlet is in a hemispherical shape, the third silencing chamber (202) is in a conical shape, and the section of the third silencing chamber (202) is gradually reduced along the direction of the air outlet.

6. A two-stage fan blade local ventilator driven by a permanent magnet motor according to any of claims 1-5, wherein the two ends of the ventilation pipeline (1) are provided with isolation covers (5).

7. A two-stage fan blade local ventilator driven by a permanent magnet motor according to any of claims 1-3, wherein a plurality of groups of support seats (6) are arranged at the bottom of the ventilation pipeline (1).

8. A two-stage fan blade local ventilator driven by a permanent magnet motor according to any of claims 1-5, wherein the ventilation duct (1) is provided with a wiring cavity (3) for supplying power to the motor (4) with double output shafts.