CN103423212A

CN103423212A - Mine fan

Info

Publication number: CN103423212A
Application number: CN2013103852916A
Authority: CN
Inventors: 马占国; 张帆; 马云靖
Original assignee: China University of Mining and Technology CUMT
Current assignee: China University of Mining and Technology CUMT
Priority date: 2013-08-29
Filing date: 2013-08-29
Publication date: 2013-12-04
Anticipated expiration: 2033-08-29
Also published as: CN103423212B

Abstract

The invention discloses a mine fan, comprising a shell (1), a motor (4) arranged in the shell and impellers (2) arranged at the two ends of the motor (4), wherein a motor shell (41) on the motor (4) is fixedly connected with the shell (1) through a connecting rod (3), the inner wall (5) of the shell is provided with a plurality of grooves I (6) along the rifle direction, the inner wall between adjacent grooves I is provided with at least one group of silencing holes which are cyclically arrayed by size along the rifle direction, and the track of the connecting line of circle centers of each group of silencing holes is in parallel with the track of the grooves I. According to the mine fan, the silencing holes have the effects of sound attenuation and noise reduction, so that noise and energy generated by the inner wall of the fan are eliminated, and the noise generated when the fan is in normal operation is reduced; by being combined with the grooves I, air flows of different speeds are fused, friction noise generated by the air flows of different speeds is reduced, the air flows can spirally advance, the resistance of wind current is reduced, wind pressure is increased, wind speed is improved, and the loss of wind quantity and wind pressure is reduced.

Description

A kind of mine ventilator

Technical field

The present invention relates to a kind of blower fan, specifically a kind of mine ventilator.

Background technique

Mine ventilator is as the capital equipment of air-supply in coal mine roadway, oxygenation, gas-removing, tinnitus, dizziness, weakness of limbs and the symptom such as absent minded appear in the miner that the noise produced during its normal operation easily makes for a long time in underground work, serious to the damage of miner's health.In order to address this problem, people generally can install respectively baffler at the inlet/outlet place of blower fan, by the purpose that is used for reaching sound-deadening and noise-reducing of baffler.But it just carries out relevant treatment to the noise produced from blower fan, does not fundamentally solve noise, the blower fan as noise source is not carried out to any processing.In addition, in actual using process, the quantity that is arranged on the blower fan in coal mine roadway is fewer, and the noise of generation is also just less; And the installation quantity of blower fan by the air feed of blower fan apart from decision, the air feed of blower fan distance is determined by distinguished and admirable, the air quantity of blower fan and the size of blast again; The distinguished and admirable resistance of existing blower fan is large, air quantity and air loss larger, therefore it is less to produce noise during a kind of normal operation, distinguished and admirable resistance of while is little, air quantity and the less blower fan of air loss are current research directions.

Summary of the invention

The problem existed for above-mentioned prior art, the invention provides a kind of mine ventilator, the noise produced in the time of not only can reducing its normal operation, and little, the air quantity of its distinguished and admirable resistance and air loss are less simultaneously.

To achieve these goals, a kind of mine ventilator of the present invention comprises shell, motor in the enclosure is installed and is arranged on the impeller at motor two ends that the motor housing on motor is fixedly connected with shell by connecting rod; Have many groove I along the rifle direction on the inwall of shell, have at least one group on the inwall between adjacent grooves I along rifle direction, the bloop of cycle arrangement by size, the track of every group of bloop circle center line connecting is parallel with the track of groove I.

Preferably, the cross section of described connecting rod is water-drop-shaped.

Preferably, the longitudinal section of the inwall of described shell is streamline.

Preferably, the longitudinal section of the motor housing on described motor is streamline.

Preferably, on described motor housing, along the rifle direction, have groove II, described groove II is consistent with the rotation direction of groove I.

Preferably, the blade on described impeller is at least three, adjacent blades) between report to the leadship after accomplishing a task arrangement, along the projection gapless of axial direction.

Preferably, the two ends of described motor housing are separately installed with the bearing of a concentric placement of the rotating shaft with motor, and impeller is connected with motor housing by bearing.

Further, also comprise the Air Filter be arranged on outer casing inner wall.

Compared with prior art, the present invention by offering groove I along the rifle direction on the inwall of flow blower casing, and offer the bloop of cycle arrangement by size along rifle on the inwall of groove I both sides, these bloops play the effect of sound-deadening and noise-reducing, thereby eliminated noise and energy that the blower fan inwall produces, made blower fan produce reducing noise when normal operation; The setting of engagement groove I, not only can merge the air-flow of friction speed, reduces the friction noise that the friction speed air-flow produces, and can also make flow spiral advance, and reduced distinguished and admirable resistance, increased blast, improved wind speed, makes the loss of air quantity and blast reduce.During use, can add again baffler at its two ends again, relend the effect that helps baffler, make final noise less, reduce to greatest extent the injury of noise to the miner.

The accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

The enlarged diagram that Fig. 2 is A place in Fig. 1;

The structural representation that Fig. 3 is impeller of the present invention;

Fig. 4 is the structural representation after the present invention improves.

In figure: 1, shell, 2, impeller, 21, blade, 3, connecting rod, 4, motor, 41, motor housing, 42, rotating shaft, 43, bearing, 5, inwall, 6, groove I, 7, bloop, 8, groove II.

Embodiment

Below in conjunction with accompanying drawing, the invention will be further described.

As depicted in figs. 1 and 2, this mine ventilator comprises shell 1, is arranged on the motor 4 in shell 1 and is arranged on the impeller 2 at motor 4 two ends that the motor housing 41 on motor 4 is fixedly connected with shell 1 by connecting rod 3; Have many groove I6 along the rifle direction on the inwall 5 of shell 1, have at least one group on the inwall 5 between adjacent grooves I6 along rifle direction, the bloop 7 of cycle arrangement by size, the track of every group of bloop 7 circle center line connectings is parallel with the track of groove I6.

When blower fan normally moves, the bloop 7 on groove I6 both sides, blower fan inwall 5 has the effect of sound-deadening and noise-reducing, has eliminated noise and energy that the blower fan inwall produces, makes blower fan produce reducing noise when normal operation; Coordinate the groove I6 that offer alternate with bloop 7, not only can merge the air-flow of friction speed, reduce the friction noise that the friction speed air-flow produces, can also make flow spiral advance, reduce distinguished and admirable resistance, increase blast, improve wind speed, made the loss of fan delivery and blast reduce.And the loss of fan delivery and blast reduces the air feed distance increased blower fan, reduced in the situation that the use amount of the identical blower fan of air feed distance, and then reduced noise source, reduced noise.During use, can add again baffler at its two ends again, by the effect of baffler, make final noise less, reduce to greatest extent the injury of noise to the miner.

Preferably, when the cross section of described connecting rod 3 is water-drop-shaped, can further eliminate its noise caused and energy loss, the noise that whole blower fan itself is produced is less.

Preferably, when the longitudinal section of described shell 1 inwall 5 is streamline, or the longitudinal section of described motor housing 41 not only can eliminate the noise that these parts cause while being streamline, and the noise that whole blower fan itself is produced is less; Can also reduce distinguished and admirable resistance, improve air quantity and blast, reduce its energy loss.

Preferably, as shown in Figure 4, have groove II8 along the rifle direction on described motor housing 41, groove II8 is consistent with the rotation direction of groove I6, make by both air-flow rotation directions consistent, further reduced relative friction and resistance between both air-flows, fall the low noise while also reduced that air-flow is distinguished and admirable, air quantity and blast.

, have the part air-flow and turn back round about through the gap of 21, blade through impeller 2 time because of air-flow, be unfavorable for taking full advantage of of air-flow.And in order to take full advantage of air-flow, as shown in Figure 3, blade 21 on impeller 2 has three at least, 21 of adjacent blades overlap, and its longitudinal overlap view gapless, be 21 of adjacent blades report to the leadship after accomplishing a task arrangement, along the projection gapless of axial direction, just can air-flow further be utilized by reducing the mode that air-flow turn back.

As shown in Figure 2, the two ends of motor housing 41 are separately installed with a bearing 43 with the concentric placement of rotating shaft 42 of motor 4, impeller 2 is connected with motor housing 41 by bearing 43, now, bearing 43 provides support power to impeller 2, and rotating shaft 42 provides the transmission couple of force only to impeller 2, does not bear the gravity of impeller 2, compare with the mode only be connected by rotating shaft 42 between impeller 2 and motor 4, can avoid occurring that rotating shaft 42 occurs because of the situation that the gravity that bears impeller 2 is out of shape.

As further improvement of the present invention, also can on shell 1 inwall, Air Filter be set, for stoping dust and other impurities, enter in bloop 7, prevent the situation that is blocked and causes erasure effect to reduce because of bloop 7.

Claims

1. a mine ventilator comprises shell (1), is arranged on the motor (4) in shell (1) and is arranged on the impeller (2) at motor (4) two ends that the motor housing (41) on motor (4) is fixedly connected with shell (1) by connecting rod (3); It is characterized in that, the inwall (5) of described shell (1) is upper has many groove I(6 along the rifle direction), adjacent grooves I(6) have at least one group on the inwall between (5) along rifle direction, the bloop of cycle arrangement (7) by size, the track and groove I(6 of every group of bloop (7) circle center line connecting) track parallel.

2. a kind of mine ventilator according to claim 1, is characterized in that, the longitudinal section of described connecting rod (3) is water-drop-shaped.

3. a kind of mine ventilator according to claim 1 and 2, is characterized in that, the longitudinal section of the inwall (5) of described shell (1) is streamline.

4. a kind of mine ventilator according to claim 1 and 2, is characterized in that, the longitudinal section of the motor housing (41) on described motor (4) is streamline.

5. a kind of mine ventilator according to claim 4, is characterized in that, described motor housing (41) is upper has groove II(8 along the rifle direction), described groove II(8) with groove I(6) rotation direction consistent.

6. a kind of mine ventilator according to claim 1 and 2, is characterized in that, the blade (21) on described impeller (2) is at least three, the arrangement of reporting to the leadship after accomplishing a task between adjacent blades (21), along the projection gapless of axial direction.

7. a kind of mine ventilator according to claim 1 and 2, it is characterized in that, the two ends of described motor housing (41) are separately installed with a bearing (43) with the concentric placement of rotating shaft (42) of motor (4), and impeller (2) is connected with motor housing (41) by bearing (43).

8. a kind of mine ventilator according to claim 1 and 2, is characterized in that, also comprises the Air Filter be arranged on shell (1) inwall.