CN211231017U

CN211231017U - Silencer for middle-low pressure centrifugal fan

Info

Publication number: CN211231017U
Application number: CN201921760670.8U
Authority: CN
Inventors: 姚亚鑫
Original assignee: Qidong Changxin Environmental Protection Equipment Co ltd
Current assignee: Qidong Changxin Environmental Protection Equipment Co ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-08-11
Anticipated expiration: 2029-10-21

Abstract

The utility model relates to the technical field of noise reduction, and discloses a silencer for a medium and low pressure centrifugal fan, which comprises a silencer main body, wherein one end of the left side of the silencer main body is fixedly connected with one end of a connecting flange, the other end of the connecting flange is fixedly connected with one end of a reducer pipe, the other end of the reducer pipe is fixedly connected with one end of an air inlet pipe, a closed supporting plate is fixedly arranged on one side of the outer surface of the silencer main body, one side of the closed supporting plate is fixedly connected with a closed handle shaft, the closed handle shaft is fixedly connected with a closed handle, the closed handle is close to one side of the right end and is fixedly connected with a handle, one end of the closed supporting plate is in sliding connection with a closed supporting beam through a fixed button I, the silencer for the medium and low pressure centrifugal fan achieves high efficiency and quietness by using an internal silencing sheet and a, can not play a good role in noise elimination and influence the working environment.

Description

Silencer for middle-low pressure centrifugal fan

Technical Field

The utility model relates to a silencer technical field specifically is a silencer for well low pressure centrifugal fan.

Background

The silencer is a device for preventing sound from transmitting and allowing airflow to pass through, is an important measure for eliminating aerodynamic noise, is a noise reduction device arranged on an airflow channel of air equipment or in an air inlet and exhaust system, can block the transmission of sound waves, and is an effective tool for controlling the noise.

The noise elimination piece in the present centrifugal fan silencer has low noise elimination amount, cannot play a good noise elimination effect, cannot be detached to clean and install the noise elimination piece, and particularly provides a new technical scheme for solving the problem of causing great influence on the working environment.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a be not enough to prior art, the utility model provides a silencer for well low pressure centrifugal fan possesses high-efficient, quiet, can freely unpack apart advantages such as silencer, has solved some problems that above-mentioned mentions.

(II) technical scheme

For the above-mentioned purpose that possesses high efficiency, quiet, can freely unpack the silencer apart, the utility model provides a following technical scheme: the utility model provides a silencer for well low pressure centrifugal fan, including the silencer main part, the one end fixed connection of silencer main part left side one end and hookup flange, the other end of hookup flange and the one end fixed connection of reducing pipe, the other end and the intake pipe one end fixed connection of reducing pipe, silencer main part surface one side fixed mounting closed backup pad, the closed handle axle of one side fixed connection of closed backup pad, closed handle axle one survey the closed handle of fixed connection, closed handle is close to one side fixed connection handle of right side one end, closed backup pad one end is through No. one fixed button and closed supporting beam sliding connection, closed supporting beam is through No. two and closed supporting arm sliding connection of fixed button, closed supporting beam one end extends to in the opening that the closed plate was seted up with the closed plate joint.

Silencer main part one end and noise damping piece fixed plate one end fixed connection, noise damping piece fixed plate passes noise damping piece fixed plate and screw cap threaded connection through the screw on one side, noise damping piece fixed plate passes through screw and inside noise damping piece threaded connection, silencer main part inner wall fixed surface connects the surface noise damping piece, surface noise damping piece one end and noise damping piece go-between fixed connection, the opening has been seted up to silencer main part surface one side, open-ended one side fixed connection sealing washer, silencer main part right side one end fixed connection goes out the tuber pipe.

Preferably, the closing plate is fixedly mounted on one side of the muffler body.

Preferably, the number of the closing support beams and the closing support arms is two.

Preferably, the number of the screws is five, and the screws are arranged on the silencing piece fixing plate at equal intervals.

Preferably, the number of the inner silencing pieces is five, and the inner silencing pieces are connected with the silencing piece fixing plate in a threaded mode at equal intervals.

Preferably, the number of the noise reduction sheet connecting rings is two, and the noise reduction sheet connecting rings are correspondingly connected to two ends of the surface noise reduction sheet.

Advantageous effects

Compared with the prior art, the utility model provides a silencer for well low pressure centrifugal fan possesses following beneficial effect:

1. this a silencer for well low pressure centrifugal fan through using inside noise elimination piece and surface noise elimination piece, reaches high-efficient, quiet, better noise cancelling effect, has solved the noise elimination and has hanged down, can not play fine noise cancelling effect, influences operational environment's problem.

2. This a silencer for well low pressure centrifugal fan through installation closing plate and closed support arm, and the closed support arm of rethread drives, makes the activity of closed support arm can open or close the opening, reaches the effect that can open the silencer, has solved and can not tear the silencer and wash the problem of installation noise damping piece.

Drawings

FIG. 1 is a sectional view of the structure of the present invention;

FIG. 2 is a left side view of the structure of the present invention;

FIG. 3 is a right side view of the structure of the present invention;

fig. 4 is an enlarged view of a portion a of fig. 1 according to the present invention.

Wherein: 1 silencer main body, 2 connecting flanges, 3 reducer pipes, 4 air inlet pipes, 5 closed supporting plates, 6 closed handle shafts, 7 closed handles, 8 handles, 9 fixed buttons I, 10 closed supporting beams, 11 fixed buttons II, 12 closed supporting arms, 13 closed plates, 14 silencing sheet fixing plates, 15 screws, 16 screw caps, 17 internal silencing sheets, 18 surface silencing sheets, 19 silencing sheet connections, 20 openings, 21 sealing rings and 22 air outlet pipes.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the technical solution of the present invention will be further specifically described by way of examples and with reference to the accompanying drawings.

A silencer for a medium and low pressure centrifugal fan comprises a silencer main body 1, one end of the left side of the silencer main body 1 is fixedly connected with one end of a connecting flange 2, the other end of the connecting flange 2 is fixedly connected with one end of a reducing pipe 3, the other end of the reducing pipe 3 is fixedly connected with one end of an air inlet pipe 4, a closed supporting plate 5 is fixedly installed on one side of the outer surface of the silencer main body 1, one side of the closed supporting plate 5 is fixedly connected with a closed handle shaft 6, one side of the closed handle shaft 6 is fixedly connected with a closed handle 7, one side of the closed handle 7, which is close to one end of the right side, is fixedly connected with a handle 8, one end of the closed supporting plate 5 is slidably connected with a closed supporting beam 10 through a fixed button I9, the closed supporting beam 10 is slidably connected with a closed supporting arm 12 through a fixed button II 11, the number of the, the silencer main body 1 cleaning and installing device has the advantages that the two closed supporting arms 12 can be driven by the two closed supporting beams 10 to enable the two closed supporting arms 12 to move, the effect of closing the opening 20 is achieved, the problem that the silencer main body 1 cannot be detached to clean and install the internal silencing pieces 17 is solved, the problem that the working environment is greatly influenced is solved, one end of each closed supporting beam 10 extends into the opening formed in the closed plate 13 to be clamped with the closed plate 13, the closed plate 13 is fixedly installed on one side of the outer surface of the silencer main body 1, the effect of closing or opening the silencer main body 1 can be achieved by installing the closed plate 13 on one side of the outer surface of the silencer main body 1, the problem that the silencer main body 1 cannot be detached to clean and install the internal silencing pieces 17 is solved, one end of the silencer main body 1 is fixedly connected with one end of the silencing piece fixing plate 14, one side of the silencing piece fixing plate 14 penetrates through the, the silencing sheet fixing plate 14 is in threaded connection with the internal silencing sheets 17 through screws 15, the number of the internal silencing sheets 17 is five, the internal silencing sheets 17 are in threaded connection with the silencing sheet fixing plate 14 at equal intervals, high-efficiency, quiet and better silencing effects are achieved by arranging the five internal silencing sheets 17, the problems that silencing is low, a good silencing effect cannot be achieved, and a working environment is affected are solved, the number of the screws 15 is five, the screws 15 are arranged on the silencing sheet fixing plate 14 at equal intervals, the positions of the internal silencing sheets 17 can be fixed through the arrangement of the five screws 15, the positions of the internal silencing sheets 17 are firm, the internal silencing sheets 17 can be detached by unscrewing the screws 15 and screw caps 16, the effect that the internal silencing sheets 17 can be detached freely is achieved, the problem that the internal silencing sheets 17 cannot be detached for cleaning is solved, the surface silencing sheets 18 are fixedly connected to the inner wall surface of the silencer main body 1, surface noise elimination piece 18 one end and noise elimination piece go-between 19 fixed connection, noise elimination piece go-between 19 quantity is two, and correspond the both ends of connecting at surface noise elimination piece 18, through setting up noise elimination piece go-between 19, make surface noise elimination piece 18 interconnect, increase the noise elimination scope, reach high-efficient, quiet, better noise cancelling effect, it is low to have solved the noise elimination, can not play fine noise cancelling effect, influence operational environment's problem, opening 20 has been seted up to silencer main part 1 surface one side, one side fixed connection sealing washer 21 of opening 20, through setting up sealing washer 21, when can reaching to make silencer main part 1 closed, can not make the problem that the gas that gets into from intake pipe 4 flows out the noise that causes in the gap of opening 20, silencer main part 1 right side one end fixed connection goes out tuber pipe 22.

The working principle is as follows: inside gas entering into silencer main part 1 through using intake pipe 4 to get into, the quantity that the rethread set up changes gaseous movement track for five inside noise elimination piece 18, the rethread sets up the movement track that the surperficial surface noise elimination piece 18 of 1 internal surface of silencer main part stops changing gas, thereby reach the effect of noise elimination, gas after the amortization is again through going out tuber pipe 22 discharge silencer main part, rethread installation closing plate 13 and closed support arm 12, rethread closed support arm 12 drives, make closed support beam 10 activity can open or close opening 20, reach the effect that can unpack silencer main part 1 apart, the problem that can not dismantle silencer main part 1 and wash installation inside noise elimination piece 17 is solved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A silencer for a medium and low pressure centrifugal fan comprises a silencer main body (1), and is characterized in that: one end of the left side of the silencer main body (1) is fixedly connected with one end of a connecting flange (2), the other end of the connecting flange (2) is fixedly connected with one end of a reducing pipe (3), the other end of the reducing pipe (3) is fixedly connected with one end of an air inlet pipe (4), one side of the outer surface of the silencer main body (1) is fixedly provided with a closed supporting plate (5), one side of the closed supporting plate (5) is fixedly connected with a closed handle shaft (6), one side of the closed handle shaft (6) is fixedly connected with a closed handle (7), one side of the closed handle (7) close to one end of the right side is fixedly connected with a handle (8), one end of the closed supporting plate (5) is slidably connected with a closed supporting beam (10) through a first fixing button (9), the closed supporting beam (10) is slidably connected with a closed supporting arm (12) through a second fixing button (11), one end of the closed supporting beam (10) extends into an opening formed in the closed plate (, silencer main part (1) one end and noise damping piece fixed plate (14) one end fixed connection, noise damping piece fixed plate (14) one side is passed noise damping piece fixed plate (14) and screw cap (16) threaded connection through screw (15), noise damping piece fixed plate (14) are through screw (15) and inside noise damping piece (17) threaded connection, silencer main part (1) inner wall fixed surface connects surface noise damping piece (18), surface noise damping piece (18) one end and noise damping piece go-between (19) fixed connection, opening (20) have been seted up to silencer main part (1) surface one side, one side fixed connection sealing washer (21) of opening (20), silencer main part (1) right side one end fixed connection goes out tuber pipe (22).

2. The muffler for a medium and low pressure centrifugal fan according to claim 1, wherein: the closing plate (13) is fixedly arranged on one side of the outer surface of the silencer main body (1).

3. The muffler for a medium and low pressure centrifugal fan according to claim 1, wherein: the number of the closed supporting beams (10) and the number of the closed supporting arms (12) are two.

4. The muffler for a medium and low pressure centrifugal fan according to claim 1, wherein: the number of the screws (15) is five, and the screws are arranged on the silencing piece fixing plate (14) at equal intervals.

5. The muffler for a medium and low pressure centrifugal fan according to claim 1, wherein: the number of the internal silencing pieces (17) is five, and the internal silencing pieces are connected with the silencing piece fixing plate (14) in a threaded mode at equal intervals.

6. The muffler for a medium and low pressure centrifugal fan according to claim 1, wherein: the number of the silencing sheet connecting rings (19) is two, and the two silencing sheet connecting rings are correspondingly connected to the two ends of the surface silencing sheet (18).