CN204877986U - Doublestage water ring compressor - Google Patents

Abstract

This utility model relates to a two-stage water ring compressor, belonging to the field of vacuum compression pumps. It includes a pump body, within which a single impeller is installed. A single impeller baffle is located in the middle of the single impeller. Corresponding to the single impeller baffle, a pump body baffle is installed on the pump body. A front disc and a rear disc are respectively installed at both ends of the single impeller, and vent holes are provided on the front and rear discs. The single impeller baffle, pump body baffle, and front disc form a high cavity, and the single impeller baffle, pump body baffle, and rear disc form a low cavity. This utility model has a simple structure, is convenient for installation and maintenance, and is easy to assemble.

Description

Two-stage water ring compressor

technical field

The utility model relates to a two-stage water ring compressor, which belongs to the field of vacuum compression pumps.

Background technique

The existing two-stage water ring vacuum pump mainly adopts two pump bodies, the impellers are respectively arranged in the two pump bodies, and the intermediate wall is arranged between the two pump bodies, and the gas is compressed in two stages, with two stages and two rows. There are many parts, which are easily damaged and difficult to repair; the structure is complex, the installation accuracy is high, and the gap between the impeller and the pump body must be strictly controlled, making assembly difficult.

Utility model content

The purpose of this utility model is to provide a two-stage water ring compressor with simple structure, convenient installation and maintenance, and easy assembly.

The two-stage water ring compressor described in the utility model includes a pump body, a single impeller is arranged in the pump body, a single impeller partition is arranged in the middle of the single impeller, corresponding to the single impeller partition, a pump body partition is arranged on the pump body, and the single impeller The two ends are respectively equipped with a front disc and a rear disc, and the front disc and the rear disc are provided with ventilation holes. The plate and rear disc enclose a low cavity.

In the two-stage water ring compressor, the cavity is divided into a high cavity and a low cavity by a single impeller partition and a pump body partition. After the gas enters the high cavity for compression, it then enters the low cavity for compression, realizing two-stage compression.

The ventilation hole is circular, strip-shaped or oval; it is convenient for gas to enter and discharge.

The single impeller is connected with the main shaft in the pump body through a flat key.

The diameter of the single impeller is larger in the middle than at the ends; it is convenient for processing and manufacturing.

The front part of the front disc is provided with a front pump cover, and the front pump cover is provided with a high-cavity air inlet and a high-chamber exhaust port; the rear part of the rear disc is provided with a rear pump cover, and the rear pump cover is provided with a low-cavity air inlet and a low-cavity exhaust port port, the high chamber exhaust port and the low chamber air inlet are connected by a series pipeline.

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

The utility model has a simple structure. By setting a single impeller and dividing the cavity into a high cavity and a low cavity through a single impeller partition and a pump body partition, two-stage compression is realized, which greatly simplifies the structure, reduces the number of parts, and simplifies The installation requirements reduce the difficulty of assembly, prolong the service life of the equipment, reduce the damage rate of the equipment, and simplify the maintenance work.

Description of drawings

Fig. 1 is a structural representation of an embodiment of the utility model,

Fig. 2 is a top view structure diagram of the air inlet and the air outlet of the utility model.

In the figure: 1, rear disc 2, series pipeline 3, single impeller 4, front disc 5, front pump cover 6, flat key 7, pump body 8, pump body baffle 9, single impeller baffle 10, rear Pump cover 11, high chamber exhaust port 12, low chamber exhaust port 13, low chamber air inlet 14, high chamber air inlet.

Detailed ways

Below in conjunction with embodiment the utility model is further described:

As shown in Figures 1 to 2, the two-stage water ring compressor described in the present invention includes a pump body 7, and a single impeller 3 is arranged in the pump body 7, and the single impeller 3 can be connected to the main shaft in the pump body 7 through the flat key 6. connected; the single impeller 3 is provided with a single impeller partition 9 in the middle, corresponding to the single impeller partition 9, the pump body 7 is provided with a pump body partition 8, and the two ends of the single impeller 3 are respectively provided with a front disc 4 and a rear disc 1, and the front disc 4 and the rear disc 1 respectively. Disc 4 and rear disc 1 are provided with air vents, which are circular, strip-shaped or oval; single impeller partition 9, pump body partition 8 and front disc 4 form a high cavity, single impeller partition The plate 9, the pump body partition 8 and the rear disc 1 surround a low chamber. The middle of single impeller 3 diameters is bigger than end. The front part of the front disc 4 is provided with a front pump cover 5, and the front pump cover 5 is provided with a high cavity air inlet 14 and a high cavity exhaust port 11, and the rear part of the rear disc 1 is provided with a rear pump cover 10, and the rear pump cover 10 is provided with a low cavity Air inlet 13 and low cavity exhaust port 12, high cavity exhaust port 11 and low cavity air inlet 13 are connected by series pipeline 2.

Working process or working principle:

In the two-stage water ring compressor, the single impeller partition 9 and the pump body 7 partition divide the cavity into a high cavity and a low cavity, and the gas enters the high cavity from the high cavity inlet 14, and after being compressed, passes through the high cavity exhaust port 11 It enters into the series pipeline 2, and then enters the low cavity through the low cavity inlet 13. After being compressed, it is discharged through the low cavity exhaust port 12, realizing two-stage compression.

Claims (4)

1. a twin-stage water ring compressor, comprise the pump housing (7), it is characterized in that, single impeller (3) is set in the pump housing (7), single impeller (3) middle part is provided with single impeller dividing plate (9), corresponding single impeller dividing plate (9), the pump housing (7) is arranged pump partition plate (8), single impeller (3) two ends arrange front disk (4) and rear disk (1) respectively, front disk (4) and rear disk (1) are provided with vent, single impeller dividing plate (9), pump partition plate (8) and front disk (4) surround high pitched tune, single impeller dividing plate (9), pump partition plate (8) and rear disk (1) surround low chamber.

2. twin-stage water ring compressor according to claim 1, is characterized in that, vent is circle, long strip or ellipse.

3. twin-stage water ring compressor according to claim 1, is characterized in that, single impeller (3) is connected with the pump housing (7) inner main axis by flat key (6).

4. twin-stage water ring compressor according to claim 1, is characterized in that, larger than end in the middle of single impeller (3) diameter.