CN218235609U

CN218235609U - Reducing fan silencer

Info

Publication number: CN218235609U
Application number: CN202221272836.3U
Authority: CN
Inventors: 杨亚设; 李栋梁; 杨大卫
Original assignee: Henan Chenfan Electromechanical Environmental Protection Equipment Co ltd
Current assignee: Henan Chenfan Electromechanical Environmental Protection Equipment Co ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2023-01-06
Anticipated expiration: 2032-05-25

Abstract

The utility model discloses a reducing fan muffler relates to fan muffler technical field, including the muffler body, the inside bottom welding of muffler body has the bracing piece, and the top of bracing piece is connected with the cylinder, the top intercommunication of cylinder has the pipe, first piston is installed in the inside left side of cylinder, and the left side central authorities of first piston are connected with first movable rod, first filter plate is installed to the left end of first movable rod, and the left side of first filter plate bonds and has first amortization cotton, the right-hand member of first piston is connected with the spring. The utility model discloses in, let in hydraulic oil through the inside toward the pipe, promote first piston and the second piston is carried on the back mutually and is removed, and first piston removes the in-process, can drive first filter plate and first amortization cotton and remove, and on the same hand, the second piston can drive second filter plate and the cotton removal of second amortization for distance between first amortization cotton and the second amortization cotton can be adjusted, realizes different noise cancelling effect.

Description

Reducing fan silencer

Technical Field

The utility model relates to a fan muffler technical field especially relates to a reducing fan muffler.

Background

The fan silencer is a silencer for treating aerodynamic noise formed by a fan to the environment, is used for silencing the air inlet and outlet channels of various fans, blowers and centrifugal and axial flow fans, determines how much silencing quantity is needed in certain spectral ranges according to spectral characteristic data obtained by actually testing noise sources of various fan operation sites of power plants as a main basis for designing a sound absorbing sheet structure and a fluid channel, and adopts a narrow rectangular channel with a large material veneer to enhance the absorption effect.

The existing variable-diameter fan silencer cannot realize different silencing effects by changing the distance between adjacent silencing cottons in the using process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving current reducing fan muffler and in the use, can't realize different noise cancelling effect's shortcoming through the distance that changes between the adjacent amortization cotton, and the reducing fan muffler that proposes.

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

a variable diameter fan silencer comprising:

the silencer body, the inside bottom welding of silencer body has the bracing piece, and the top of bracing piece is connected with the cylinder, the top intercommunication of cylinder has the pipe, first piston is installed in the inside left side of cylinder, and the left surface central authorities of first piston are connected with first movable rod, first filter plate is installed to the left end of first movable rod, and the left surface of first filter plate bonds and has first amortization cotton, the right-hand member of first piston is connected with the spring, and the right-hand member of spring installs the second piston, the right side central authorities of second piston are connected with the second movable rod, the second filter plate is installed to the right-hand member of second movable rod, and the left surface of second filter plate bonds and has the second amortization cotton.

Preferably, the through-hole has been seted up to the inside both sides of muffler body, and the outside both sides welding of muffler body has a round platform section of thick bamboo, the internally mounted of round platform section of thick bamboo has the reducing mounting panel, and the inside of reducing mounting panel has seted up the mounting hole, the embedding of the positive central authorities of muffler body has transparent scale window, the damping pivot is installed to the bottom of muffler body, and the bottom of damping pivot is connected with the base.

Preferably, the first piston and the first filter plate are welded into an integrated structure through a first movable rod, and the transverse axis of the first movable rod coincides with the transverse axis of the cylinder.

Preferably, an elastic structure is formed between the second piston and the first piston through a spring, and the outer wall of the second piston is attached to the inner wall of the cylinder.

Preferably, a rotating structure is formed between the silencer body and the base through the damping rotating shaft, and the central axis of the silencer body coincides with the central axis of the damping rotating shaft.

Preferably, the reducing mounting plates are in electric welding connection with the circular truncated cone, and the number of the reducing mounting plates is three.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, through the inside of toward the pipe let in hydraulic oil, promote first piston and second piston back of the body removal of carrying on the back, first piston removes the in-process, can drive first filter plate and first amortization cotton and remove, and on the same hand, the second piston can drive second filter plate and the cotton removal of second amortization for distance between first amortization cotton and the second amortization cotton can be adjusted, realizes different noise cancelling effect.

2. The utility model discloses in, with the ventilation pipe joint in the inside of mounting hole, can link together ventilation pipe and reducing mounting panel and round platform section of thick bamboo, through three reducing mounting panels of group, can adapt to the air pipe's of different diameters installation, the practicality is higher.

Drawings

FIG. 1 is a schematic view of the internal structure of the middle silencer according to the present invention;

FIG. 2 is a schematic view of the internal structure of the cylinder of the present invention;

fig. 3 is a schematic diagram of the overall front structure of the present invention.

Illustration of the drawings:

1. a circular truncated cone; 2. a muffler body; 3. a first movable bar; 4. a conduit; 5. a cylinder; 6. a second filter plate; 7. second silencing cotton; 8. a base; 9. a damping rotating shaft; 10. a support bar; 11. a first filter plate; 12. first noise reduction cotton; 13. a through hole; 14. a variable-diameter mounting plate; 15. mounting holes; 16. a second movable bar; 17. a second piston; 18. a spring; 19. a first piston; 20. transparent scale window.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, a variable diameter fan silencer comprises a silencer body 2, a support rod 10 is welded at the bottom end inside the silencer body 2, a cylinder 5 is connected to the top end of the support rod 10, a conduit 4 is communicated with the top of the cylinder 5, a first piston 19 is installed on the left side inside the cylinder 5, a first movable rod 3 is connected to the left side center of the first piston 19, the first piston 19 and the first filter plate 11 are welded into an integrated structure through the first movable rod 3, the transverse axis of the first movable rod 3 coincides with the transverse axis of the cylinder 5, the first piston 19 and the first filter plate 11 are connected together through the first movable rod 3, hydraulic oil is introduced into the conduit 4, the first piston 19 and the second piston 17 can be pushed to move back and forth, when the first piston 19 moves, the first filter plate 11 and the first silencing cotton 12 can be driven to move, similarly, the second piston 17 can drive the second filter plate 6 and the second cotton 7 to move, so that the distance between the first cotton 12 and the second cotton 7 can be adjusted, the first silencing effect is achieved, and the first filter plate 11 is provided with a left movable rod 11 with a left side adhesive surface;

the right end of the first piston 19 is connected with a spring 18, the right end of the spring 18 is provided with a second piston 17, an elastic structure is formed between the second piston 17 and the first piston 19 through the spring 18, the outer wall of the second piston 17 is attached to the inner wall of the cylinder 5, the first piston 19 and the second piston 17 are connected through the spring 18, when the hydraulic oil is stopped to be introduced into the conduit 4, the first piston 19 and the second piston 17 can move oppositely under the elastic force action of the spring 18 and can discharge the hydraulic oil in the cylinder 5, the outer wall of the second piston 17 is attached to the inner wall of the cylinder 5 to ensure the stability of the second piston 17 in the process of moving left and right, the center of the right side of the second piston 17 is connected with a second movable rod 16, the right end of the second movable rod 16 is provided with a second filter plate 6, and the left side of the second filter plate 6 is bonded with a second silencing cotton 7;

through-hole 13 has been seted up to the inside both sides of muffler body 2, and the outside both sides welding of muffler body 2 has a round platform section of thick bamboo 1, the internally mounted of round platform section of thick bamboo 1 has reducing mounting panel 14, and mounting hole 15 has been seted up to reducing mounting panel 14's inside, be electric welding connection between reducing mounting panel 14 and the round platform section of thick bamboo 1, and the quantity of reducing mounting panel 14 is three groups, electric welding connection ensures the fastening nature of being connected between reducing mounting panel 14 and the round platform section of thick bamboo 1, through three reducing mounting panels 14 of group, can adapt to the installation of the air pipe of different diameters, the practicality is higher, the embedding of the front central authorities of muffler body 2 has transparent scale window 20, damping pivot 9 is installed to the bottom of muffler body 2, and damping pivot 9's bottom is connected with base 8, constitute revolution mechanic structure through damping pivot 9 between muffler body 2 and the base 8, and the central axis of muffler body 2 coincides mutually with the central axis of damping pivot 9, muffler body 2 can rotate round damping pivot 9, and then can adjust the use position of muffler body 2, and is comparatively practical.

The working principle is as follows: with ventilation pipe (not drawn in the figure) joint in the inside of mounting hole 15, can link together ventilation pipe and reducing mounting panel 14 and round platform section of thick bamboo 1, through three reducing mounting panels of group 14, can adapt to the installation of the ventilation pipe of different diameters, the practicality is higher, link together pipe 4 and hydraulic pump (not drawn in the figure), let in hydraulic oil toward the inside of pipe 4, can promote first piston 19 and second piston 17 and move back to back, when first piston 19 removes the in-process, can drive first filter plate 11 and first amortization cotton 12 and remove, the same thing, second piston 17 can drive second filter plate 6 and the removal of second amortization cotton 7, make the distance between first amortization cotton 12 and the second amortization cotton 7 can be adjusted, realize different noise cancelling effect, when stopping leading in hydraulic oil to the inside of pipe 4, first piston 19 and second piston 17 can move towards each other under the effect of spring 18 elasticity, can discharge the inside hydraulic oil of cylinder 5, finally make first piston 19 reset with second piston 17.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a reducing fan muffler which characterized in that includes:

muffler body (2), the inside bottom welding of muffler body (2) has bracing piece (10), and the top of bracing piece (10) is connected with cylinder (5), the top intercommunication of cylinder (5) has pipe (4), first piston (19) are installed in the inside left side of cylinder (5), and the left surface central authorities of first piston (19) are connected with first movable rod (3), first filter plate (11) are installed to the left end of first movable rod (3), and the left surface of first filter plate (11) bonds and have first amortization cotton (12), the right-hand member of first piston (19) is connected with spring (18), and the right-hand member of spring (18) installs second piston (17), the right surface central authorities of second piston (17) are connected with second movable rod (16), second filter plate (6) are installed to the right-hand member of second movable rod (16), and the left surface of second filter plate (6) bonds and have second amortization cotton (7).

2. The variable diameter fan silencer according to claim 1, wherein: through-hole (13) have been seted up to the inside both sides of muffler body (2), and the outside both sides welding of muffler body (2) has round platform section of thick bamboo (1), the internally mounted of round platform section of thick bamboo (1) has reducing mounting panel (14), and the inside of reducing mounting panel (14) has seted up mounting hole (15), the positive central authorities embedding of muffler body (2) has transparent scale window (20), damping pivot (9) are installed to the bottom of muffler body (2), and the bottom of damping pivot (9) is connected with base (8).

3. The variable diameter fan silencer of claim 1, wherein: the first piston (19) and the first filter plate (11) are welded into an integrated structure through the first movable rod (3), and the transverse axis of the first movable rod (3) is overlapped with the transverse axis of the cylinder (5).

4. The variable diameter fan silencer according to claim 1, wherein: an elastic force structure is formed between the second piston (17) and the first piston (19) through a spring (18), and the outer wall of the second piston (17) is attached to the inner wall of the cylinder (5).

5. The variable diameter fan silencer of claim 2, wherein: a rotating structure is formed between the silencer body (2) and the base (8) through the damping rotating shaft (9), and the central axis of the silencer body (2) coincides with the central axis of the damping rotating shaft (9).

6. The variable diameter fan silencer of claim 2, wherein: the reducing mounting plates (14) are electrically welded with the circular truncated cone cylinder (1), and the number of the reducing mounting plates (14) is three.