CN210738818U

CN210738818U - Be used for roots's fan silencing device

Info

Publication number: CN210738818U
Application number: CN201921221877.8U
Authority: CN
Inventors: 陈彬; 王瑶
Original assignee: Changsha Rongjiang Fan Co Ltd
Current assignee: Changsha Rongjiang Fan Co Ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-06-12
Anticipated expiration: 2029-07-30

Abstract

The utility model aims at solving the current difficult problem poor to roots's fan noise cancelling effect, disclose a be used for roots's fan silencing device, including flexible pipe, the lantern ring is installed to both ends symmetry about flexible pipe, the inside fixed mounting of lantern ring has the gasbag ring, lantern ring fixed surface installs the communicating connecting pipe with the gasbag ring, connecting pipe other end fixed mounting has the gasbag, lantern ring upper and lower bilateral symmetry is fixed with leads to the liquid pipe, it has the pipe to lead to the switch-on between liquid pipe and the flexible pipe, lead to the liquid pipe lateral wall and seted up with the communicating through-hole of pipe, lead to the liquid outside of tubes end cover is installed, the end cover mid-mounting has the slide bar. The utility model discloses simple structure, reasonable in design utilizes the air-supply line to roots's fan and the mode that goes out the tuber pipe surface and lead to water, uses water to wrap up the air-supply line and play tuber pipe, and then is convenient for realize making an uproar, improves the noise reduction effect to roots's fan, accords with social demand, is worth promoting to roots's fan field.

Description

Be used for roots's fan silencing device

Technical Field

The utility model relates to a roots's fan field especially relates to a be used for roots's fan silencing device.

Background

The Roots blower belongs to a positive displacement blower, and the end faces of an impeller and front and rear end covers of the blower. The principle is a rotary compressor which compresses and conveys gas by utilizing the relative motion of two blade-shaped rotors in a cylinder. The blower has simple structure and convenient manufacture, is widely applied to aquaculture oxygenation, sewage treatment aeration and cement conveying, is more suitable for a gas conveying and pressurizing system in a low-pressure occasion, and can also be used as a vacuum pump and the like.

The main parts of the Roots blower generating noise are as follows: 1. aerodynamic noise (mainly) radiated by the air inlet and the air outlet; 2. mechanical noise radiated from the housing, motor, bearings, etc.; 3. solid vibration noise of the fundamental vibration radiation. Wherein: the aerodynamic noise is mainly rotational noise and eddy noise. The control method of the pneumatic noise comprises the following steps: 1. and 2, installing a silencer, 2, adding a shielding case, 3, adopting sound insulation measures for a fan room, 4, wrapping a pipeline, 5 and isolating vibration.

The existing method is to carry out silencing by installing a silencer, the damping coefficient of the silencer is very small, and the silencer has higher transmission rate in a resonance area, so that equipment swings; because the damping ratio is low, it is poor to separate the effect of shaking in the high frequency region to and stabilising arrangement such as interior inserted bar and spring cover, also some use sound-proof housing gives sound insulation, can influence the heat dissipation to a certain extent like this, the mode that the pipeline was wrapped in addition, but the current mode of wrapping is more hard, and noise reduction effect is poor moreover, consequently, need design one kind and be used for roots's fan silencing device to solve prior art not enough.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the deficiency of the prior art and providing a silencing device for a Roots blower.

The utility model discloses a realize through following technical scheme:

the utility model provides a be used for roots's fan silencing device, includes flexible pipe, the lantern ring is installed to flexible pipe left and right sides both ends symmetry, the inside fixed mounting of lantern ring has the gasbag ring, lantern ring fixed surface installs with the communicating connecting pipe of gasbag ring, connecting pipe other end fixed mounting has the gasbag, lantern ring upper and lower bilateral symmetry is fixed with leads to the liquid pipe, it has the pipe to lead to the switch-on between liquid pipe and the flexible pipe, lead to the liquid pipe lateral wall and seted up with the communicating through-hole of pipe, lead to the liquid pipe outer end and install the end cover, the end cover mid-mounting has the slide bar, slide bar outer end fixed mounting has.

As the preferred technical scheme of the utility model, set up on the end cover and supply the gliding hole of slide bar.

As the preferred technical proposal of the utility model, the guide pipe is matched with the extension pipe in an inserting way.

As the utility model discloses a preferred technical scheme, the slider surface paste has rubber seal, slider and liquid pipe sliding fit.

As the preferred technical scheme of the utility model, the gasbag ring is the loop configuration and communicates with each other with connecting pipe and gasbag.

As the preferred technical scheme of the utility model, the flexible pipe is made of rubber materials, and the guide pipe penetrates into the flexible pipe from the flexible pipe.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a set up flexible pipe, cover the flexible pipe on the play tuber pipe surface of roots's fan, and the setting of rethread air sac ring realizes the sealing to flexible pipe, make flexible pipe and roots's fan play tuber pipe form the enclosure space, at this moment, through the setting of liquid passing pipe, and then be convenient for to lead to water in flexible pipe, make water parcel in roots's fan play tuber pipe outside, can not make the vibration of play tuber pipe propagate through the air medium directly, but subduct the noise of play tuber pipe through the effect of water, also install the device in roots's fan's air-supply line department simultaneously, because the aerodynamic noise of air inlet and gas outlet radiation is the main noise, thus can effectively subduct the main noise, the utility model discloses simple structure, reasonable in design, utilize the mode of leading to roots's fan's air-supply line and play tuber pipe surface, use water parcel air-supply line and play tuber pipe, and then be convenient for realize making an uproar, improve the noise reduction effect to roots's fan, accord with social demand, be worth promoting to roots's fan field.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Figure 2 is a side view of the attachment of the collar to the balloon ring of the present invention.

In the figure: 1. the device comprises a telescopic pipe, 2, a conduit, 3, a through hole, 4, a handle, 5, a sliding rod, 6, an end cover, 7, a liquid through pipe, 8, a sliding block, 9, a lantern ring, 10, an air bag ring, 11, a connecting pipe, 12 and an air bag.

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. 1-2, the present invention provides a technical solution:

the utility model provides a be used for roots fan silencing device, includes flexible pipe 1, the lantern ring 9 is installed to flexible pipe 1 left and right sides both ends symmetry, the inside fixed mounting of lantern ring 9 has gasbag ring 10, lantern ring 9 fixed surface installs with gasbag ring 10 communicating connecting pipe 11, connecting pipe 11 other end fixed mounting has gasbag 12, lantern ring 9 bilateral symmetry is fixed with logical liquid pipe 7 from top to bottom, it has pipe 2 to lead to the switch-on between liquid pipe 7 and the flexible pipe 1, lead to the liquid pipe 7 lateral wall seted up with the communicating through-hole of pipe 2, lead to 7 outer ends of liquid pipe and install end cover 6, 6 mid-mounting of end cover has slide bar 5, 5 outer ends fixed mounting of slide bar has handle 4, 5 other end fixed mounting of slide bar has.

The end cover 6 is provided with a hole for the sliding of the sliding rod 5.

The guide pipe 2 is matched with the telescopic pipe 1 in an inserting way.

A rubber sealing ring is pasted on the surface of the sliding block 8, and the sliding block 8 is in sliding fit with the liquid through pipe 7.

The air bag ring 10 is of an annular structure and is communicated with a connecting pipe 11 and an air bag 12.

The telescopic pipe 1 is made of rubber materials, and the guide pipe 2 penetrates into the telescopic pipe from the telescopic pipe 1.

The working principle is as follows: firstly, the device is sleeved on the surface of an air outlet pipe of a Roots blower, a user pulls the lantern ring 9 to two sides to stretch the telescopic pipe 1, so that the telescopic pipe can be fully wrapped outside the air outlet pipe, then the air bag 12 is extruded, and then the air bag 10 is ventilated by using the connecting pipe through the extrusion of the air bag 12, so that the air bag ring 10 is expanded, a closed space is formed between the telescopic pipe 1 and the air outlet pipe of the Roots blower, the guide pipe 2 is pulled out from the telescopic pipe 1 in advance, the guide pipe 2 is placed into a nearby water tank, the user pulls the handle 4 outwards to enable the sliding block 8 to slide outwards, the principle similar to a needle tube is realized, so that water is sucked into the liquid through the guide pipe 2 into the liquid through pipe 7, then the guide pipe 2 is inserted into the telescopic pipe 1, then the user slowly pushes the handle 4 to enable the sliding block 8 to slide towards the bottom of the liquid through pipe 7, and further lead, make flexible pipe 1 and roots's fan go out space parcel water between the tuber pipe, fill through the cover of water, and then change the medium that the sound propagated in roots's fan work, will effectively fall the noise treatment to roots's fan, same mode can let another staff use the device cover on the air-supply line to effectively fall the amortization of making an uproar to the main noise source of roots's fan.

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. The utility model provides a be used for roots's fan silencing device, includes flexible pipe (1), its characterized in that: the utility model discloses a telescopic tube, including telescopic tube (1), connecting pipe (11), gasbag (12), end cover (6) are installed to both ends symmetry about telescopic tube (1), the inside fixed mounting of the lantern ring (9) has gasbag ring (10), lantern ring (9) fixed surface install with gasbag ring (10) communicating connecting pipe (11), connecting pipe (11) other end fixed mounting has gasbag (12), both sides symmetry is fixed with logical liquid pipe (7) about the lantern ring (9), it has pipe (2) to lead to the switch-on between liquid pipe (7) and telescopic tube (1), lead to liquid pipe (7) lateral wall and seted up with pipe (2) communicating through-hole, lead to liquid pipe (7) outer end and install end cover (6), end cover (6) mid-mounting has slide bar (5), slide bar (5) outer end fixed mounting has handle (4).

2. The silencing device for the Roots blower according to claim 1, wherein: and the end cover (6) is provided with a hole for the sliding of the sliding rod (5).

3. The silencing device for the Roots blower according to claim 1, wherein: the guide pipe (2) is in plug fit with the telescopic pipe (1).

4. The silencing device for the Roots blower according to claim 1, wherein: the surface of the sliding block (8) is pasted with a rubber sealing ring, and the sliding block (8) is in sliding fit with the liquid through pipe (7).

5. The silencing device for the Roots blower according to claim 1, wherein: the air bag ring (10) is of an annular structure and is communicated with the connecting pipe (11) and the air bag (12).

6. The silencing device for the Roots blower according to claim 1, wherein: the telescopic pipe (1) is made of rubber materials, and the guide pipe (2) penetrates into the telescopic pipe from the telescopic pipe (1).