CN214787983U

CN214787983U - Silencer of dry-type double-screw compressor

Info

Publication number: CN214787983U
Application number: CN202120530121.2U
Authority: CN
Inventors: 沈杰; 李金垚; 李子亮; 徐杰
Original assignee: Shanghai Hanbell Precise Machinery Co ltd
Current assignee: Shanghai Hanbell Precise Machinery Co ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-11-19
Anticipated expiration: 2031-03-15

Abstract

The utility model relates to a silencer of a dry-type double-screw compressor, which comprises a cavity body, wherein the cavity body is provided with an air inlet and an air outlet; a main air inlet channel is formed in the middle of the cavity type body, one side of the main air inlet channel is communicated with the first silencing chamber, the other side of the main air inlet channel is provided with a second silencing chamber, the second silencing chamber is communicated with the air outlet, and the first silencing chamber is communicated with the second silencing chamber through at least two air passages; the main intake passage communicates with the second muffling chamber through the first muffling chamber and the air passage. The utility model discloses a dry-type double screw compressor's muffler simple structure, manufacturing cost is lower, and plays good noise cancelling effect through the amortization room and the baffle structure of dispersion.

Description

Silencer of dry-type double-screw compressor

Technical Field

The utility model belongs to the air compressor field especially relates to a silencer of dry-type double screw compressor.

Background

The exhaust port of the traditional dry-type double-screw compressor is directly connected with a pipeline, and exhaust noise is caused due to high exhaust flow speed. A plurality of silencing cavities are arranged in the existing silencer structure, the cavities are communicated with one another through round holes with different apertures and different numbers, a casting mold and a casting process are complex, the cost is high, and casting sand is difficult to clean.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome among the prior art dry-type double screw compressor noise too big, inner structure complicacy cause manufacturing process complicated, the higher defect of cost, provide a dry-type double screw compressor's muffler.

The utility model discloses a following technical scheme solves above-mentioned technical problem:

the silencer of the dry type double-screw compressor is characterized by comprising a cavity type body, wherein an air inlet and an air outlet are formed in the cavity type body; a main air inlet channel is formed in the middle of the cavity type body, one side of the main air inlet channel is communicated with the first silencing chamber, the other side of the main air inlet channel is provided with a second silencing chamber, the second silencing chamber is communicated with the air outlet, and the first silencing chamber is communicated with the second silencing chamber through at least two air passages; the main intake passage communicates with the second muffling chamber through the first muffling chamber and the air passage.

Wherein, the air inlet with the gas outlet is located respectively two adjacent surfaces on the cavate body.

The two air passages are positioned on the upper side and the lower side of the main air inlet passage and are perpendicular to the central axis of the main air inlet passage.

The middle parts of the two air passages are respectively provided with a pair of air passage baffles which are oppositely arranged, the air passage baffles are respectively arranged on the inner walls of the air passages, and gaps are formed between the air passage baffles.

The first silencing chamber is internally provided with two first partition plates which are arranged in parallel, two ends, perpendicular to the extending direction of the air passage, of the first partition plates are connected with the inner wall of the first silencing chamber, and the two sides, parallel to the air passage, of the first partition plates form gaps with the inner wall of the first silencing chamber.

Two second partition plates which are arranged in parallel are arranged in the second silencing chamber, two ends, perpendicular to the extending direction of the air passage, of the second partition plates are connected with the inner wall of the second silencing chamber, and the two sides, parallel to the air passage, of the second partition plates form gaps with the inner wall of the second silencing chamber.

The utility model has the advantages that: the utility model discloses a dry-type double screw compressor's muffler simple structure, manufacturing cost is lower, and plays good noise cancelling effect through the amortization room and the baffle structure of dispersion.

Drawings

Fig. 1 is a front view of a muffler of a dry type twin-screw compressor according to a preferred embodiment of the present invention.

Fig. 2 is a C-C sectional view of a muffler of the dry twin-screw compressor of fig. 1.

Fig. 3 is a sectional view a-a of a muffler of the dry twin-screw compressor of fig. 1.

Fig. 4 is a B-B sectional view of a muffler of the dry twin-screw compressor of fig. 1.

Detailed Description

The present invention will be more clearly and completely described with reference to the following preferred embodiments and the accompanying drawings.

As shown in fig. 1 to 4, the silencer of the dry type twin-screw compressor in the present embodiment includes a chamber body 1, and an air inlet 2 and an air outlet 3 are provided on the chamber body 1. A main air inlet channel 11 is formed in the middle of the cavity body, one side of the main air inlet channel 11 is communicated with a first silencing chamber 12, the other side of the main air inlet channel is provided with a second silencing chamber 13, and the second silencing chamber 13 is communicated with the air outlet 3. The first muffling chamber 12 and the second muffling chamber 13 are communicated through two air passages 14 which are distributed above and below the main air intake passage 11. Wherein, the air inlet 2 and the air outlet 3 are respectively arranged on two adjacent surfaces of the cavity body 1. Wherein the main intake passage 11 communicates with the second muffling chamber 13 through the first muffling chamber 12 and the two air passages 14.

In this embodiment, the two air passages 14 are located at the upper and lower sides of the main air intake passage 11, and are perpendicular to the central axis of the main air intake passage 11. A pair of air passage baffles 141 which are arranged oppositely is arranged in the middle of each air passage 14, the air passage baffles 141 are respectively arranged on the inner walls of the air passages 14, and a gap is reserved between the two air passage baffles 141.

Two first partition plates 121 which are arranged in parallel are arranged in the first silencing chamber 12, two ends of each first partition plate 121, which are perpendicular to the extending direction of the air passage 14, are connected with the inner wall of the first silencing chamber 12, and two sides of each first partition plate 121, which are parallel to the extending direction of the air passage 14, form a gap with the inner wall of the first silencing chamber 12.

Similarly, two second partition plates 131 arranged in parallel are arranged in the second muffling chamber 13, two ends of the second partition plates 131 perpendicular to the extending direction of the air duct 14 are connected with the inner wall of the second muffling chamber 13, and two sides of the second partition plates 131 parallel to the extending direction of the air duct 14 form a gap with the inner wall of the second muffling chamber 13.

The air inlet of the silencer of the embodiment is connected with the air outlet of the air compressor, and the air outlet of the silencer is connected with the exhaust pipeline. After entering the air inlet of the silencer, the air of the compressor is firstly introduced into the first silencing chamber 12 through the main air inlet channel 11, is divided at the two first partition plates 121, forms two small air flows at two sides of each first partition plate 121, then is converged into the upper air passage 14 and the lower air passage 14 respectively and flows through the gap between the air passage baffle plates 141 to enter the second silencing chamber 13, and the two air flows are blocked by the two parallel second partition plates 131 after entering the second silencing chamber 13, bypasses the second partition plates 131 to form four air flows, are converged at the middle part of the second silencing chamber 13, and finally flow out from the air outlet 2.

The structure of the silencer of the embodiment reduces the gas flow speed through expansion; on the other hand, one audio is divided into two audios through gas shunting and then combined, and low-frequency sound is converted into high-frequency sound which can not be received by human ears through overlapping a plurality of sound sources, so that the effect of noise reduction is achieved.

Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. The silencer of the dry type double-screw compressor is characterized by comprising a cavity type body, wherein an air inlet and an air outlet are formed in the cavity type body; a main air inlet channel is formed in the middle of the cavity type body, one side of the main air inlet channel is communicated with the first silencing chamber, the other side of the main air inlet channel is provided with a second silencing chamber, the second silencing chamber is communicated with the air outlet, and the first silencing chamber is communicated with the second silencing chamber through at least two air passages; the main intake passage communicates with the second muffling chamber through the first muffling chamber and the air passage.

2. The muffler of a dry twin-screw compressor as claimed in claim 1, wherein the gas inlet and the gas outlet are respectively provided at two adjacent surfaces of the cavity body.

3. The silencer of the dry-type twin-screw compressor as claimed in claim 1, wherein the two air passages are formed at upper and lower sides of the main air intake passage and are perpendicular to a central axis of the main air intake passage.

4. The silencer of the dry-type twin-screw compressor as claimed in claim 3, wherein a pair of opposite air passage baffles are provided at the middle portions of the two air passages, the air passage baffles are respectively provided on the inner walls of the air passages, and a gap is formed between the air passage baffles.

5. The silencer of the dry-type twin-screw compressor as claimed in claim 1, wherein two first partition plates are provided in the first muffling chamber in parallel, both ends of the first partition plates perpendicular to the extending direction of the gas passage are connected to the inner wall of the first muffling chamber, and the first partition plates parallel to both sides of the gas passage form a gap with the inner wall of the first muffling chamber.

6. The silencer of the dry-type twin-screw compressor as claimed in claim 1, wherein two second partitions are provided in the second muffling chamber in parallel, both ends of the second partitions perpendicular to the extending direction of the gas passage are connected to the inner wall of the second muffling chamber, and the second partitions parallel to both sides of the gas passage form a gap with the inner wall of the second muffling chamber.