CN201071835Y - Volute casing of high-lift submersible cutting pump - Google Patents

Abstract

The utility model discloses a turbine housing of a high-lift tearing and cutting pump. A turbine housing body in the utility model comprises a first turbine housing, wherein, a second turbine housing is positioned on the first turbine, a changeover portion is arranged on and connected with the first turbine housing and the second turbine housing, and the first turbine housing, the second turbine housing and the changeover portion are formed integrally. A first flow passage is positioned at the bottom inside the first turbine housing, a second flow passage is positioned at the bottom inside the second turbine housing, and the first flow passage and the second flow passage are helical. The first turbine housing is communicated with the second turbine housing through a connecting passage outside the turbine housing body, a groove with an upward opening is positioned at the center of the chamber bottom in the second turbine housing, and the exit end of the connecting passage is communicated with the bottom of the groove; the entrance end of the connecting passage is communicated with the exit end of the first flow passage. The turbine housing body is provided with a delivery port, the exit end of the second flow passage is communicated with the entrance end of the delivery port. Liquid enters into the second turbine housing after being pressurized in the first turbine housing, and falls from the entrance end of the delivery port after being pressurized again, thus greatly increasing the pump lift.

Description

High-lift diving tears the volute that cuts pump

Technical field

The utility model relates to a kind of high-lift diving and tears the parts that cut pump, especially relates to a kind of high-lift diving and tears the volute that cuts pump.

Background technique

Traditional multistage pump often adopts the structural design of every grade of supporting one group of pump section of impeller and stator, and every group of pump section links together again, makes that so high-lift diving tears that the accessory that cuts pump is more, size is big, assembling is complicated, cost is higher.

Summary of the invention

The utility model mainly is to solve above-mentioned existing in prior technology technical problem, provides a kind of high-lift diving to tear the volute that cuts pump.

Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of high-lift diving tears the volute that cuts pump, comprise the volute body, the volute body sets out the mouth of a river, described volute body comprises the one-level volute, the secondary volute is set above the one-level volute, the changeover portion that connects the two is set between one-level volute and the secondary volute, and one-level volute, secondary volute and changeover portion one constitute; Described one-level volute inside bottom is provided with the one-level runner, and described secondary volute inside bottom is provided with the secondary runner, and the two-stage runner is shape in the shape of a spiral all; Connecting passage via the volute body outside between described one-level volute and the secondary volute is connected; The outlet end of secondary runner is communicated to the entrance point of water outlet.The cavity bottom central authorities of described secondary volute are provided with the groove that opening makes progress; The outlet end of described connecting passage is communicated to the bottom of groove, and the entrance point of connecting passage is communicated to the outlet end of one-level runner.

The utlity model has simple in structure, reasonable in design, adopt sencond stage impeller to join the structural design of a twin-stage volute altogether, structure is simplified greatly, the harmony of pump complete machine improves, complete machine weight, size all alleviate greatly and reduce, and are that runner adopts sped structure besides, can improve the working efficiency of pump effectively.

Description of drawings

Fig. 1 is a kind of main TV structure schematic representation of the present utility model;

Fig. 2 is the A-A sectional structure schematic representation of Fig. 1;

Fig. 3 is the B-B sectional structure schematic representation of Fig. 1.

Embodiment

Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment: referring to Fig. 1, Fig. 2 and Fig. 3, the utility model comprises the volute body, described volute body comprises one-level volute 1, secondary volute 2 is set above the one-level volute 1, the changeover portion 3 that connects the two is set between one-level volute 1 and the secondary volute 2, and one-level volute, secondary volute and changeover portion one constitute.Described one-level volute 1 inside bottom is provided with one-level runner 11, and described secondary volute 2 inside bottom are provided with secondary runner 21, and the two-stage runner is shape in the shape of a spiral all.Connecting passage 4 via the volute body outside between described one-level volute 1 and the secondary volute 2 is connected, chamber 22 bottom center of secondary volute 2 are provided with the groove 31 that opening makes progress, the outlet end of connecting passage 4 is communicated to the bottom of groove 31, and the entrance point of connecting passage 4 is communicated to the outlet end of one-level runner 11.Set out the mouth of a river 5 on the volute body, the outlet end of secondary runner 21 is communicated to the entrance point of water outlet 5.

Working principle of the present utility model is such: liquid is sucked by import and enters one-level runner 11, after the pressurization of the one-level impeller in the one-level volute 1, by connecting passage 4, enter secondary runner 21, the back pressurize once more from water outlet 5 outflows by the sencond stage impeller in the secondary volute 2, after twice pressurization, this lift of pump increases greatly.

At last, should be pointed out that above embodiment only is the more representational example of the utility model.Obviously, the technical solution of the utility model is not limited to the foregoing description, and many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection domain of the present utility model.

Claims (2)

1. a high-lift diving tears the volute that cuts pump, comprises the volute body, and the volute body sets out the mouth of a river, it is characterized in that:

Described volute body comprises one-level volute (1), secondary volute (2) is set above the one-level volute (1), the changeover portion (3) that connects the two is set between one-level volute (1) and the secondary volute (2), and one-level volute (1), secondary volute (2) and changeover portion (3) one constitute;

Described one-level volute (1) inside bottom is provided with one-level runner (11), and described secondary volute (2) inside bottom is provided with secondary runner (21), and the two-stage runner is shape in the shape of a spiral all;

Connecting passage (4) via the volute body outside between described one-level volute (1) and the secondary volute (2) is connected;

The outlet end of secondary runner (21) is communicated to the entrance point of water outlet (5).

2. high-lift diving according to claim 1 tears the volute that cuts pump, it is characterized in that:

Chamber (22) bottom center of described secondary volute (2) is provided with the groove (31) that opening makes progress;

The outlet end of described connecting passage (4) is communicated to the bottom of groove (31), and the entrance point of connecting passage (4) is communicated to the outlet end of one-level runner (11).

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