阅读说明：本技术 一种用于碟式分离机降噪的吸声结构 (Sound absorption structure for noise reduction of disc separator ) 是由 蔡海 肖海 黄菊莲 胡敏 李丽 于 2020-12-09 设计创作，主要内容包括：本发明公开了一种用于碟式分离机降低噪音的结构,将穿孔板吸声结构应用于碟式分离机的降噪,在不改变原有结构的情况下,只需在机身上排渣口处增加此降噪结构,生产制造简单,成本小,便于实现。(The invention discloses a structure for reducing noise of a disc separator, which applies a perforated plate sound absorption structure to noise reduction of the disc separator, only needs to add the noise reduction structure at a slag discharge hole on a machine body under the condition of not changing the original structure, and has the advantages of simple production and manufacture, low cost and convenient realization.)

1. The utility model provides a sound absorbing structure for dish formula separating centrifuge is fallen and is made an uproar, installs in the row's of dish formula separating centrifuge frame sediment mouth department, its characterized in that: the spiral-flow type separator is characterized by comprising a spiral-flow connecting pipe welded on a body of the disc separator, wherein at least one layer of micro-perforated plate is installed on the inner side of the spiral-flow connecting pipe, the micro-perforated plate is rolled into a cylinder shape according to the inner diameter of the spiral-flow connecting pipe, and a gap is formed between the micro-perforated plate and the inner wall of the spiral-flow connecting.

2. The sound absorbing structure for noise reduction of a disk separator according to claim 1, wherein: the micro-perforated plate is a rectangular plate with the thickness of 1mm, and micro-holes with the aperture of 1mm are periodically arranged on the micro-perforated plate.

3. The sound absorbing structure for noise reduction of a disk separator according to claim 2, wherein: ten thousand micropores are uniformly distributed at equal intervals on each square meter of the micro-perforated plate.

4. The sound absorbing structure for noise reduction of a disk separator according to claim 2, wherein: the perforation rate of the micropores is controlled to be 1% -5%.

5. The sound absorbing structure for noise reduction of a disk separator according to claim 1, wherein: a cavity of 3-7 mm is formed between the micro-perforated plate and the inner wall of the rotational flow connecting pipe, and the space is adjusted according to a plane fixed by the space.

6. The sound absorbing structure for noise reduction of a disk separator according to claim 1, wherein: the micro-perforated plate is two-layer, adopts a tandem type double-layer micro-perforated plate structure, the thickness of the two layers of micro-perforated plates and the aperture of the micro-hole on the plates are the same, and the perforation rate and the cavity depth are the same or different.

7. The sound absorbing structure for noise reduction of a disk separator according to claim 1, wherein: and a micro-perforated plate is also arranged at the flange interface of the rotational flow connecting pipe.

Technical Field

The invention relates to a structure capable of reducing noise of a separator, in particular to a sound absorption structure for a slag discharge port of a body of a disc separator, and belongs to the technical field of ship manufacturing.

Background

Along with the improvement of the living standard of people, the requirement on the living quality is higher and higher, and the harm brought to people by the noise is also paid more and more attention. In particular, in recent years, the demand for industrial noise has been increasing. The industrial noise comprises aerodynamic noise, mechanical noise and electromagnetic noise, wherein the aerodynamic noise is generated by gas vibration and is generated when the gas is disturbed and the interaction between the gas and an object exists; mechanical noise is generated by solid vibration; electromagnetic noise is generated when vibrations are caused by the action of alternating magnetic fields on the stator and rotor in motors and generators, which generates periodic alternating forces. Noise generation must have three elements: noise sources, noise propagation paths, and recipients. Noise control must be handled from these three elements, in the order of preference: noise source control, propagation path control, and acceptor control.

The disc separator is a high-speed rotating machine, because the rotating speed of a separator rotary drum is high, the internal structure is complex, liquid flows at a high speed in the separator rotary drum, holes and sections on the structure of the disc separator rotary drum are arranged at multiple positions with sudden changes, and a cavity between the rotary drum and a machine body is filled with gas, so that the problems of vibration and noise are always paid attention to, and the service life and the reliability of a separator product can be influenced by the vibration and the noise. The reduction of separator noise is an important task in the development of contemporary separators.

Disclosure of Invention

The invention aims to solve the technical problem of providing a noise reduction structure for a disc separator, which can improve the noise problem of the separator under the condition of not changing the original structure.

The invention provides a sound absorption structure for noise reduction of a disc separator, which is arranged at a slag discharge port of a frame of the disc separator and comprises a cyclone connecting pipe welded on a body of the disc separator, wherein at least one layer of micro-perforated plate is arranged on the inner side of the cyclone connecting pipe, the micro-perforated plate is rolled into a cylinder shape according to the inner diameter of the cyclone connecting pipe, and a gap is formed between the micro-perforated plate and the inner wall of the cyclone connecting pipe to form a cavity.

Further, the micro-perforated plate is a rectangular plate with the thickness of 1mm, and micro-holes with the aperture of 1mm are periodically arranged on the micro-perforated plate.

Furthermore, ten thousand micropores are uniformly distributed at equal intervals on each square meter of the micro-perforated plate.

Furthermore, the perforation rate of the micropores is controlled to be 1% -5%.

Furthermore, a cavity of 3-7 mm is formed between the micro-perforated plate and the inner wall of the rotational flow connecting pipe, and the space is adjusted according to a plane fixed by the space.

Furthermore, the micro-perforated plate is two layers, a tandem type double-layer micro-perforated plate structure is adopted, the thickness of the two layers of micro-perforated plates and the aperture of the micro-hole on the plates are the same, and the perforation rate and the cavity depth are the same or different.

Compared with the prior art, the invention adopting the technical scheme has the following technical effects: the sound absorbing structure is only added in the connecting pipe of the slag discharging port without changing other structures, all parts needing to be processed can be made of formed materials, too much processing cost is not added, and the noise problem of the separator can be improved.

Drawings

FIG. 1 is a schematic diagram of a microporous plate structure according to the present invention.

Fig. 2 is a side view of fig. 1.

FIG. 3 is a schematic diagram of a tandem type double-layer microperforated panel structure in the present invention.

Fig. 4 is a schematic structural diagram of a slag discharge port of a conventional machine body.

Fig. 5 is a schematic structural view of a slag discharge port of the machine body.

Description of the drawings: 1. the machine body 2, the rotational flow connecting pipe 3 and the micro-perforated plate.

Detailed Description

The technical scheme of the invention is further explained in detail by combining the attached drawings:

the invention provides a structure for reducing noise of a disc separator. The embodiment is illustrated by a conventional model. This sound absorbing structure installs in the row's of disk separator frame sediment mouth department, because the disk separator is from the tangential direction row sediment of work, also has a large amount of gases to discharge together simultaneously, can produce a large amount of noises when the place of gas through the cross-section sudden change, consequently adopts this structure in sediment exhaust exit.

The plate with the small holes is welded in the original cyclone connecting pipe, the cyclone connecting pipe with the small perforated plate sound absorption structure is connected to the machine body in a welding mode, ten thousand uniformly distributed micropores with the aperture of about 1mm are drilled in each square meter on a thin plate with the thickness of about 1mm by the sound absorption structure, the perforation rate is controlled to be 1% -5%, and the schematic structural diagram of the micro perforated plate is shown in an attached drawing 1. The micro-perforated plate has fine and dense perforations, so that the sound resistance is high, the resonance sound absorption coefficient is high, the sound quality is low, the ratio of the sound resistance to the sound quality is greatly improved, the sound absorption frequency band is widened, and the noise is reduced. The structure has the characteristics of resistance and resonance noise elimination. The realization is also simpler, and the device is very practical for reducing the noise at the slag discharge hole of the separator body.

The adopted pore plate can directly adopt the existing thin steel plate with holes on the market, the plate is fixed in the existing rotational flow connecting pipe in a welding connection mode, a proper distance is reserved between the pore plate and the outer wall of the connecting pipe, namely a proper cavity is reserved, a cavity of 5 mm is reserved in the embodiment, and the distance can also be adjusted according to the fixed plane.

Meanwhile, a tandem type double-layer micro-perforated plate structure can also be adopted, the thickness and the aperture of the two layers of plates are generally the same, the perforation rate and the cavity depth can be different, and the schematic diagram is shown in figure 2.

Because the whirl is taken over and is had certain angle when the fuselage welding, the sheet metal of the structure flange kneck that this patent adopted also is trompil, and the slag of discharging has certain velocity of flow, can not leave too much in the pipeline, even have the residue also can flow into with the next spare part of whirl takeover connection because leave the angle and at the place trompil of export.

The structure has the characteristics of resistance and resonance noise elimination, is simple to realize, can be directly purchased and rolled into a cylinder shape, is directly welded in a connecting pipe, and is simple to operate.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to further illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is also intended to be covered by the appended claims. The scope of the invention is defined by the claims and their equivalents.