CN217735750U - Composite air inlet silencer applied to roots blower - Google Patents

Abstract

The utility model discloses a be applied to roots blower's combined type air inlet silencer, include: the silencing device comprises a machine body, a silencing outer cylinder, a silencing inner cylinder, a silencing top cover, an inner top cover and a filtering material, wherein the silencing outer cylinder is arranged on the left side and the right side inside the machine body, the silencing inner cylinder is arranged on the inner side of the silencing outer cylinder, the silencing top cover is arranged on the top end inside the machine body, the filtering material is arranged on two sides of an air outlet of the machine body, and the inner top cover is arranged on the top end of the air outlet of the machine body. The composite air inlet silencer applied to the Roots blower has the advantages that the outer silencing barrel is made of the medium-thick steel plate for sound insulation, the inner silencing barrel is made of the pore plate and the sound-absorbing silencing cotton for noise reduction, a silencer flow channel is lengthened as far as possible in a relatively unchanged height, and the purpose of silencing is achieved.

Description

Composite air inlet silencer applied to roots blower

Technical Field

The utility model relates to a roots blower field specifically is a be applied to roots blower's combined type air inlet silencer.

Background

The Roots blower is used as a typical gas pressurizing and conveying machine and widely applied to industries such as building materials, electric power, smelting, mines, aquaculture, sewage treatment, chemical engineering and the like. The working principle is that two mutually meshed impellers in a casing rotate at a constant speed in opposite directions under the action of a pair of synchronous gears, so that gas in a closed volume enclosed by the casing, a wall plate and the impellers is pushed and discharged to an outlet from an air inlet continuously, and the aim of blowing air is fulfilled. When the Roots blower conveys gas containing dust media, the media in the gas rub against the impeller, the impeller is easily damaged, the service life of the impeller can be shortened due to long-time use, the dust content of an air outlet can be increased, and the Roots blower is not suitable for places with high cleanliness. In addition, the defect of high noise exists at the air inlet.

In order to solve the above problems, the prior art discloses an inlet noise reduction filter of a roots blower (publication number: CN 209180023U). In the disclosure, "the inlet noise reduction filter comprises a base, a driving motor and the roots blower are mounted on the base, the roots blower comprises an air outlet, the air outlet is connected with an air outlet pipe, a safety valve and a pressure gauge are arranged on the air outlet pipe, and the air outlet pipe is connected with an elastic joint, a horizontal type noise reducer and a one-way valve. The invention solves the problem of dust filtration of the Roots blower, adds the inlet silencing filter, has certain silencing function, but has insignificant silencing effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be applied to roots blower's combined type air inlet silencer to solve the defect that mentions in the above-mentioned background art.

To achieve the above objects, there is provided a composite intake muffler for a roots blower, comprising: organism, noise elimination urceolus, noise elimination inner tube, noise elimination top cap, inner roof and filtering material, its characterized in that: the silencing outer barrel is arranged on the left side and the right side inside the machine body, the silencing inner barrel is arranged on the inner side of the silencing outer barrel, the silencing top cover is arranged on the top end inside the machine body, the filtering materials are arranged on two sides of an air outlet of the machine body, and an inner top cover is arranged on the top end of the air outlet of the machine body.

Furthermore, the material of the outer silencing barrel is a stainless steel plate, and the stainless steel plate is adopted because the stainless steel plate can improve the hardness of the outer silencing barrel and increase the overall durability.

Further, the thickness of the stainless steel plate is 4.5mm-25mm, and the steel plate with the thickness of 4.5mm-25mm is adopted because the sound insulation effect can be enhanced by the medium-thickness steel plate.

Furthermore, the inner silencing barrel is made of a pore plate and sound-absorbing silencing cotton, the pore plate is adopted to reduce noise of sound, and the sound-absorbing silencing cotton is adopted to enhance the integral silencing effect, so that the silencing and noise-reducing functions are achieved at the same time.

Furthermore, the filtering material is a high-efficiency HEPA filtering screen, and the high-efficiency HEPA filtering screen is adopted because the filtering effect of the filtering screen made of the material is better, so that impurities in gas can be filtered, and the service life of the product is prolonged.

Furthermore, an air flow channel is arranged between the silencing outer cylinder and the silencing inner cylinder, and an air flow channel is arranged between the silencing inner cylinder and the air outlet of the machine body, so that the arrangement of the plurality of air flow channels is realized by lengthening the flow channel of the silencer through the structure of changing the cross section of the flow channel under the condition of relatively unchanged height, so as to achieve the aim of silencing.

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

1. the combined composite structure is adopted, and the pressure reduction is formed by the empty volume change of the flow channel for silencing, so that the silencing resistance is reduced, and the energy is saved and the efficiency is increased;

2. the filter is added into the muffler, so that the integration of muffling and filtering is realized;

3. the outer silencing barrel is made of a medium-thick steel plate, the inner silencing barrel is made of a pore plate and silencing cotton, and the silencing and noise-reducing capabilities are further improved;

4. the structure design is reasonable and compact, and the appearance is beautiful.

Drawings

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

fig. 2 is a schematic perspective view of the structure of the present invention.

The reference numbers in the figures: 1. a body; 2. a silencing outer cylinder; 3. a silencing inner cylinder; 4. a silencing top cover; 5. an inner top cover; 6. filtering material; 7. an air inlet; 8. an air outlet; 9. an air flow passage.

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 composite air inlet silencer for roots blower, comprising: the silencer comprises a silencer body 1, a silencing outer cylinder 2, a silencing inner cylinder 3, a silencing top cover 4, an inner top cover 5 and filtering materials 6, wherein an air inlet 7 is formed in the right side of the silencer body 1, and an air outlet 8 is formed below the silencer body 1.

The left side and the right side in the machine body 1 are provided with the silencing outer cylinder 2, the silencing outer cylinder 2 is made of stainless steel plates, the hardness of the silencing outer cylinder 2 is increased, the thickness of each stainless steel plate is 10mm, and the middle-thick steel plates are adopted, so that the sound insulation effect is improved.

The inner side of the silencing outer cylinder 2 is provided with the silencing inner cylinder 3, and the silencing inner cylinder 3 is made of a pore plate and silencing cotton, so that the sound in the machine body 1 is further reduced, and the noise reduction effect is improved.

1 inside top setting of organism the noise elimination top cap 4, install the both sides of the air outlet 8 of organism 1 filtering material 6, filtering material 6 be HEPA high efficiency filter screen, can cushion and fall the noise to the gas that gets into in the muffler, alleviated the physical wearing and tearing condition of high pressure rigid inlet flow to part in the muffler, improved the effective life of muffler to amortization and filterable integration have been realized.

An air flow channel 9 is arranged between the silencing outer cylinder 2 and the silencing inner cylinder 3, an air flow channel 9 is arranged between the silencing inner cylinder 3 and the air outlet 8 of the machine body 1, an inner top cover 5 is arranged at the top end of the air outlet 8 of the machine body 1, the silencer flow channel is lengthened under the condition that the height is relatively unchanged, and pressure reduction is formed by the change of the empty volume of the flow channel to carry out silencing.

The working principle is as follows: the air current flows into the machine body 1 from the direction of the air inlet 7, flows through the air flow channel 9 between the silencing outer cylinder 2 and the silencing inner cylinder 3, realizes double silencing through the silencing outer cylinder 2, the silencing inner cylinder 3 and the silencing top cover 4, continues to flow through the air flow channel 9 between the silencing inner cylinder 3 and the air outlet 8, is filtered, silenced and denoised through the silencing inner cylinder 3 and the filtering material 6, and finally flows out of the air outlet 8; this is the entire process of operation of the composite inlet muffler applied to a roots blower.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various 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 (6)

1. A composite inlet muffler for a roots blower, comprising: organism (1), noise elimination urceolus (2), noise elimination inner tube (3), noise elimination top cap (4), inner head cap (5) and filtering material (6), its characterized in that: the utility model discloses a silencing machine, including organism (1), noise elimination urceolus (2), the inboard of noise elimination urceolus (2) is equipped with noise elimination inner tube (3), the inside top of organism (1) sets up noise elimination top cap (4), install the both sides of the air outlet (8) of organism (1) filtering material (6), the top of the air outlet (8) of organism (1) is equipped with inside top cap (5).

2. The composite inlet muffler for roots blower as set forth in claim 1, wherein: the silencing outer cylinder (2) is made of a stainless steel plate.

3. The composite inlet muffler for roots blower as set forth in claim 2, wherein: the thickness of the stainless steel plate is 4.5mm-25mm.

4. The composite inlet muffler for roots blower as set forth in claim 1, wherein: the inner silencing barrel (3) is made of a pore plate and sound-absorbing silencing cotton.

5. The composite inlet muffler for roots blower as set forth in claim 1, wherein: the filtering material (6) is a HEPA high-efficiency filter screen.

6. The composite inlet muffler for roots blower as set forth in claim 1, wherein: an air flow channel (9) is arranged between the silencing outer cylinder (2) and the silencing inner cylinder (3), and an air flow channel (9) is arranged between the silencing inner cylinder (3) and an air outlet (8) of the machine body (1).

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