CN220646234U

CN220646234U - A coal fan for noise reduction

Info

Publication number: CN220646234U
Application number: CN202320995146.9U
Authority: CN
Inventors: 杨周
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-04-27
Filing date: 2023-04-27
Publication date: 2024-03-22
Anticipated expiration: 2033-04-27

Abstract

The utility model relates to a coal fan for reducing noise, which comprises a mining fan and a base, wherein the base is arranged below the mining fan, the inside of the base is hollow, and a damping mechanism and a vacuumizing mechanism are arranged between the inside of the base and the mining fan; the vacuumizing mechanism comprises a vacuumizing piston cylinder, the bottom of the inner wall of the base is fixedly connected with the vacuumizing piston cylinder, and a piston plate is connected between the inner walls of the vacuumizing piston cylinder in a sliding manner. The utility model has the advantages that the vacuum pumping mechanism is arranged, the linkage rod can be driven to act along with the vibration generated by the working of the coal fan, the piston plate is driven to do the piston motion in the vacuum pumping piston cylinder, the air in the cavity can be continuously pumped out by matching with the one-way valve, so that a relatively vacuum environment is created in the shell of the mining fan, the sound insulation is realized, and meanwhile, the rest noise is absorbed by arranging the sound insulation cotton, so that the mining fan can work relatively quietly.

Description

A coal fan for noise reduction

Technical Field

The utility model relates to the technical field of mining fans, in particular to a coal fan for reducing noise.

Background

The mining fan is one of axial-flow fans, and is separated and classified independently because of the particularity of the use industry and the applicable places and the large difference between the performance parameter and the external dimension and the general axial-flow ventilation, and is mainly applied to mine ventilation.

In the coal mining process, because air in the coal mine cavity is blocked, and a large amount of carbon dioxide, carbon monoxide and other gases exist in the coal mine cavity, the gases are easy to gather because the air in the coal mine cavity is not circulated, and therefore, in the coal mine construction process, a large amount of coal ventilation fans are required to be adopted to ventilate the coal mine cavity, so that harmful gases in the coal mine cavity can be discharged.

However, in the prior art, the existing coal fan directly ventilates the mine hole by using a general mine fan, noise generated by mechanical vibration of the existing coal fan is repeatedly reflected in the mine hole, so that a very noisy construction environment is formed in the mine hole, and the energy generated by vibration also affects one end of the stability of the mine hole, so that the coal fan capable of reducing the noise is needed to improve the construction environment in the coal mine hole.

Disclosure of Invention

In view of the foregoing problems of the prior art, a primary object of the present utility model is to provide a coal fan for noise reduction that is capable of achieving ventilation with less noise.

The technical scheme of the utility model is as follows: the coal fan for reducing noise comprises a mining fan and a base, wherein the base is arranged below the mining fan, the inside of the base is hollow, and a damping mechanism and a vacuumizing mechanism are arranged between the inside of the base and the mining fan; the vacuum pumping mechanism comprises a vacuum pumping piston cylinder, the bottom of the inner wall of the base is fixedly connected with the vacuum pumping piston cylinder, a piston plate is connected between the inner walls of the vacuum pumping piston cylinder in a sliding mode, the outer side of the vacuum pumping piston cylinder is fixedly connected with an air inlet pipe, the other side of the vacuum pumping piston cylinder is fixedly connected with an air outlet pipe, and one-way valves are arranged in the air outlet pipe and the air inlet pipe.

As a preferred implementation mode, the cavity is arranged in the mining fan shell, one end, away from the vacuumizing piston cylinder, of the air inlet pipe is fixedly connected with a corrugated pipe, one end, away from the air inlet pipe, of the corrugated pipe is connected with the inside of the cavity through a pipeline in a communicating mode, and one end, away from the vacuumizing piston cylinder, of the air outlet pipe extends to the outer side of the base.

As a preferred implementation mode, four fixed blocks are fixedly connected to the bottom of the inner wall of the base, a supporting seat is fixedly connected to the bottom of the mining fan, the outer sides of the supporting seat are in sliding connection with the inner wall of the base, damping columns are fixedly connected between the tops of the four fixed blocks and the bottom of the supporting seat, springs are sleeved on the outer sides of the damping columns, and a linkage rod is fixedly connected between the bottom of the supporting seat and the top of the piston plate.

As a preferred implementation mode, limiting grooves are formed in two sides of the inner wall of the base, limiting blocks are fixedly connected to two sides of the supporting seat, and the outer sides of the limiting blocks are in sliding connection with the inner wall of the limiting grooves.

As a preferred embodiment, the cavity is internally provided with soundproof cotton.

As a preferred implementation mode, two positioning grooves are symmetrically formed in the bottom of the base.

Compared with the prior art, the utility model has the advantages and positive effects that,

according to the utility model, the vacuumizing mechanism is arranged, so that the linkage rod can be driven to act along with the vibration generated by the operation of the coal fan, the piston plate is driven to perform piston movement in the vacuumizing piston cylinder, the air in the cavity can be continuously pumped out by matching with the one-way valve, so that a relatively vacuum environment is created in the shell of the mining fan, the sound insulation is realized, meanwhile, the rest noise is absorbed by arranging the soundproof cotton, the mining fan can be enabled to operate relatively quietly, the influence of the noise on the internal environment of a coal mine hole is greatly reduced, and the practical application is facilitated.

Drawings

FIG. 1 is a schematic perspective view of a coal fan for reducing noise;

FIG. 2 is a schematic side cross-sectional view of a coal fan for reducing noise in accordance with the present utility model;

FIG. 3 is a schematic cross-sectional front view of a coal fan for noise reduction in accordance with the present utility model;

fig. 4 is an enlarged view of fig. 2 a of a coal fan for noise reduction according to the present utility model.

Legend description: 1. a mining fan; 2. a support base; 3. a vacuum pumping piston cylinder; 4. a piston plate; 5. a linkage rod; 6. an air outlet pipe; 7. an air inlet pipe; 8. a bellows; 9. a cavity; 10. a base; 11. a fixed block; 12. a damping column; 13. a spring; 14. a limiting block; 15. a limit groove; 16. and a positioning groove.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The utility model will be further described with reference to the drawings and the specific embodiments

Example 1

As shown in fig. 1, 2, 3 and 4, the present utility model provides a technical solution: the coal fan for reducing noise comprises a mining fan 1 and a base 10, wherein the base 10 is arranged below the mining fan 1, the inside of the base 10 is hollow, and a damping mechanism and a vacuumizing mechanism are arranged between the inside of the base 10 and the mining fan 1; the vacuum pumping mechanism comprises a vacuum pumping piston cylinder 3, the bottom of the inner wall of a base 10 is fixedly connected with the vacuum pumping piston cylinder 3, a piston plate 4 is slidably connected between the inner walls of the vacuum pumping piston cylinder 3, the outer side of the vacuum pumping piston cylinder 3 is fixedly connected with an air inlet pipe 7, the other side of the vacuum pumping piston cylinder 3 is fixedly connected with an air outlet pipe 6, the air outlet pipe 6 and the air inlet pipe 7 are internally provided with one-way valves, the linkage rod 5 can be driven to act along with vibration generated by the working of a coal fan through the vacuum pumping mechanism, the piston plate 4 is driven to do piston motion inside the vacuum pumping piston cylinder 3, and air can be continuously pumped out of the air cavity 9 by matching with the one-way valves, so that a relatively vacuum environment is created in the shell of the mining fan 1, and sound insulation is achieved.

Example 2

As shown in fig. 1, 2, 3 and 4, a cavity 9 is formed in the casing of the mining fan 1, one end, far away from the vacuumizing piston cylinder 3, of the air inlet pipe 7 is fixedly connected with a corrugated pipe 8, one end, far away from the air inlet pipe 7, of the corrugated pipe 8 is connected with the inside of the cavity 9 through a pipeline in a communicating manner, one end, far away from the vacuumizing piston cylinder 3, of the air outlet pipe 6 extends to the outer side of the base 10, and vacuumizing operation can be performed.

The bottom fixedly connected with four fixed blocks 11 of base 10 inner wall, the bottom fixedly connected with supporting seat 2 of mining fan 1, the outside of supporting seat 2 and the inner wall sliding connection of base 10, fixedly connected with damping post 12 between the top of four fixed blocks 11 and the bottom of supporting seat 2, the outside cover of damping post 12 is equipped with spring 13, fixedly connected with trace 5 between the bottom of supporting seat 2 and the top of piston plate 4, can realize the shock attenuation of mining fan 1 in order to reduce noise.

The two sides of the inner wall of the base 10 are provided with limit grooves 15, two sides of the supporting seat 2 are fixedly connected with limit blocks 14, the outer sides of the limit blocks 14 are slidably connected with the inner walls of the limit grooves 15, and limit and movable spaces are provided for the movement of the supporting seat 2.

Wherein, the inside of cavity 9 is provided with the soundproof cotton, can keep apart the inside mechanical noise of fan.

Wherein, two positioning slots 16 are symmetrically arranged at the bottom of the base 10, so as to fix the base 10 at the installation position.

Working principle:

as shown in fig. 1, fig. 2, fig. 3 and fig. 4, when the mining fan 1 works to generate vibration, the linkage rod 5 is driven to act (the linkage rod 5 is made of a material with a small amount of elasticity and can change a small amount of length along with stretching or extrusion), so as to drive the piston plate 4 to do piston motion in the vacuumizing piston cylinder 3, the air in the cavity 9 can be continuously pumped out by matching with the one-way valve, when the piston plate 4 moves upwards, the one-way valve in the air inlet pipe 7 is conducted, the one-way valve in the air outlet pipe 6 is blocked, and the vacuumizing piston cylinder 3 can perform air pumping operation in the cavity 9; when the piston plate 4 moves downwards, the check valve in the air inlet pipe 7 is blocked, the check valve in the air outlet pipe 6 is communicated, the vacuumizing piston cylinder 3 can discharge air so as to build a relatively vacuum environment in the shell of the mining fan 1, sound insulation is realized, and meanwhile, the rest noise is absorbed by arranging the soundproof cotton, so that the mining fan 1 can work relatively quietly, and the influence of the noise on the internal environment of a coal mine hole is greatly reduced.

Finally, it should be noted that: the embodiments described above are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. The utility model provides a coal fan for noise reduction, includes mining fan (1) and base (10), its characterized in that: the base (10) is arranged below the mining fan (1), the inside of the base (10) is hollow, and a damping mechanism and a vacuumizing mechanism are arranged between the inside of the base (10) and the mining fan (1);

the vacuum pumping mechanism comprises a vacuum pumping piston cylinder (3), the bottom of the inner wall of a base (10) is fixedly connected with the vacuum pumping piston cylinder (3), a piston plate (4) is slidably connected between the inner walls of the vacuum pumping piston cylinder (3), an air inlet pipe (7) is fixedly connected to the outer side of the vacuum pumping piston cylinder (3), an air outlet pipe (6) is fixedly connected to the other side of the vacuum pumping piston cylinder (3), and one-way valves are arranged inside the air outlet pipe (6) and the air inlet pipe (7).

2. The coal fan for reducing noise of claim 1, wherein: the inside of mining fan (1) shell has seted up cavity (9), the one end fixedly connected with bellows (8) of evacuation piston cylinder (3) are kept away from to intake pipe (7), the one end that intake pipe (7) was kept away from to bellows (8) is connected through the pipeline intercommunication with the inside of cavity (9), the one end that evacuation piston cylinder (3) was kept away from to outlet duct (6) extends to the outside of base (10).

3. The coal fan for reducing noise of claim 1, wherein: the bottom fixedly connected with four fixed blocks (11) of base (10) inner wall, the bottom fixedly connected with supporting seat (2) of mining fan (1), the outside of supporting seat (2) and the inner wall sliding connection of base (10), four fixedly connected with damping post (12) between the top of fixed block (11) and the bottom of supporting seat (2), the outside cover of damping post (12) is equipped with spring (13), fixedly connected with trace (5) between the bottom of supporting seat (2) and the top of piston board (4).

4. A coal fan for reducing noise as defined in claim 3, wherein: limiting grooves (15) are formed in two sides of the inner wall of the base (10), limiting blocks (14) are fixedly connected to two sides of the supporting seat (2), and the outer sides of the limiting blocks (14) are slidably connected with the inner walls of the limiting grooves (15).

5. A coal fan for reducing noise as defined in claim 2, wherein: and soundproof cotton is arranged in the cavity (9).

6. The coal fan for reducing noise of claim 1, wherein: two positioning grooves (16) are symmetrically formed in the bottom of the base (10).