CN203175855U

CN203175855U - Low-noise Roots pump

Info

Publication number: CN203175855U
Application number: CN 201320230579
Authority: CN
Inventors: 深浦裕治
Original assignee: Ningbo Aifake Vacuum Technology Co Ltd
Current assignee: Ningbo Aifake Vacuum Technology Co Ltd
Priority date: 2013-04-27
Filing date: 2013-04-27
Publication date: 2013-09-04
Anticipated expiration: 2023-04-27

Abstract

The utility model discloses a low-noise Roots pump. The low-noise Roots pump comprises screws (4), an upper shell body (2), a lower shell body (3) and an inner lining (1) formed through carrying out injection molding on a PA (Polyamide) material, wherein a silencing cotton layer (5) is sleeved outside the inner lining (1), and the upper shell body (2) and the lower shell body (3) are sleeved at the upper and lower sides of the silencing cotton layer (5) and are of up-and-down fixed connection through the screws (4). The low-noise Roots pump disclosed by the utility model has the advantages that the noise generated by a rotor is reduced effectively, and the noise pollution is reduced.

Description

The Roots pump that a kind of noise is low

Technical field

The utility model belongs to the Roots pump field, is specifically related to the low Roots pump of a kind of noise.

Background technique

Existing Roots pump generally all comprises rotor and shell, and when the low Roots pump of noise was worked, the noise that described rotor rotation produces was directly outwards propagated from enclosure, makes noise pollution serious.

The model utility content

(1) technical problem that will solve

The technical problems to be solved in the utility model is to reduce the noise that the Roots pump rotor is propagated.(2) technological scheme

For solving the problems of the technologies described above, the technological scheme that the utility model adopts is: the Roots pump that a kind of noise is low, comprise that screw, upper shell, lower shell body and one are by the PA(polyamide) liner of material molding and forming, the outside of described liner is with one deck noise reduction cotton, described upper shell and lower shell body are enclosed within the both sides up and down of noise reduction cotton, and described upper shell and lower shell body are connected and fixed up and down by screw.

Wherein, the quantity of described screw has 6.

Wherein, the inboard of described liner is provided with stiffening rib.

(3) beneficial effect

The low Roots pump of noise of the present utility model is injection molded PA material liner in advance, and be with one deck noise reduction cotton in the liner outside, the described two ends of two halves shell up and down compress liner and noise reduction cotton by the mode that is threaded, make the noise reduction cotton can effectively reduce the noise that rotor produces, reduced noise pollution.

Description of drawings

Fig. 1 is the plan view of the low Roots pump of the utility model noise;

Fig. 2 is the sectional view of A-A among the utility model Fig. 1;

1 is that liner, 2 is that upper shell, 3 is that lower shell body, 4 is that screw, 5 is that noise reduction cotton, 6 is stiffening rib among the figure.

Embodiment

Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.

The low Roots pump of a kind of noise as depicted in figs. 1 and 2, comprise screw 4, upper shell 2, lower shell body 3 and the liner 1 by the molding and forming of PA material, the outside of described liner 1 is with one deck noise reduction cotton 5, described upper shell 2 and lower shell body 3 are enclosed within the both sides up and down of noise reduction cotton 5, and described upper shell 2 is connected and fixed up and down by screw 4 with lower shell body 3.

Wherein, the quantity of described screw 4 has 6.

Wherein, the inboard of described liner 1 is provided with stiffening rib 6, makes liner 1 sound construction.

The low Roots pump of noise of the present utility model is injection molded PA material liner 1 in advance, and be with one deck noise reduction cotton 5 in liner 1 outside, the two ends of described up and down two halves shell by screw about in the of 4 ways of connecting compress liner and noise reduction cotton, make the noise reduction cotton can effectively reduce the noise that rotor produces, reduced noise pollution.

The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. Roots pump that noise is low, it is characterized in that: the Roots pump that described noise is low comprises screw (4), upper shell (2), lower shell body (3) and a liner by the molding and forming of PA material (1), the outside of described liner (1) is with one deck noise reduction cotton (5), described upper shell (2) and lower shell body (3) are enclosed within the both sides up and down of noise reduction cotton (5), and described upper shell (2) is connected and fixed up and down by screw (4) with lower shell body (3).

2. the low Roots pump of noise according to claim 1, it is characterized in that: the quantity of described screw (4) has 6.

3. the low Roots pump of noise according to claim 1, it is characterized in that: the inboard of described liner (1) is provided with stiffening rib (6).