CN2350569Y - Vertical multistage pump specially adapted for firefighting - Google Patents

Abstract

The utility model relates to a vertical multistage pump specially adapted for firefighting, which is composed of a motor seat, a water outlet section, a middle section, a water inlet section connected in turn. The lower end of a main shaft is connected with a casing on the water inlet section via guide bearing, and the upper end of the main shaft is fixedly connected with the shaft coupling of a motor via a pump shaft coupling. The main shaft on the middle section is provided with a multistage impeller and guide blades, and an alloy mechanism sealing device, a bearing and the gland bush of the bearing are respectively arranged among the main shaft, the casing on the water outlet section and the casing of the motor seat. The utility model has reasonable design, compact structure, corrosion prevention, rust prevention, favorable sealing performance, energy saving and high durability.

Description

Fire-fighting special vertical multistage pump

The utility model relates to a kind of water pump, specifically, relates to the special-purpose water pump of a kind of fire-fighting.

Existing water pump is various in style, is widely used in fields such as town water supply, irrigation and water conservancy irrigation, but mostly is horizontal type structure greatly, floor space is big, installs and moves inconvenience, and running noises is big, and antiseptic and rustproof wear-resistant seal poor performance, can not satisfy the high performance requirements of fire protection sector to water pump.

The purpose of the utility model aim to provide a kind of compact structure, floor space little, conveniently moving, antiseptic and rustproof good seal performance, long service life be installed, satisfy the fire-fighting special vertical multistage pump of fire protection sector technical requirements.

Technical solution of the present utility model is: this fire-fighting special vertical multistage pump is by motor cabinet, water exit end, the stage casing, inlet segment connects and composes from top to bottom successively, the main shaft lower end is mounted on the inlet segment housing by guide bearing, the main shaft upper end is connected and fixed by pump coupling and motor coupler, also be mounted with multi-stage impeller on the main shaft, stator, impeller and stator all place the stage casing inner chamber, alloy mechanical seal is installed between water exit end housing and main shaft, bearing and bearing gland then are installed between motor cabinet and the main shaft, main shaft adopts stainless steel to be made, and impeller adopts admiralty brass to be made.

Because the utility model adopts the vertical multi-stage impeller, guide vane structure, and installation alloy mechanical seal between water exit end and main shaft, main shaft adopts stainless steel to make, impeller adopts admiralty brass to make, thereby, this fire-fighting special vertical multistage pump is reasonable in design, compact structure, floor space is little, conveniently moving is installed, and it is anticorrosion, antirust, leakage proof, good seal performance, running noises is low, energy-saving durable, long service life satisfies the requirement of fire protection sector, also can be widely used in petrochemical industry, the oil storage tank field, oilfield construction, creep into platform, purposes is extremely extensive.

Fig. 1 is the utility model structure longitudinal sectional view.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Among Fig. 1,

1-guide bearing 2-seal ring 3-impeller 4-inlet segment

5-stator 6-stage casing 7-final stage stator 8-water exit end

9-alloy mechanical seal 10-main shaft 11-label 12-bearing

13-bearing gland 14-pump coupling 15-motor coupler 16-screw jacket

17-stretching screw 18-motor cabinet

As shown in Figure 1, this fire-fighting special vertical multistage pump is by motor cabinet 18, water exit end 8, stage casing 6, inlet segment 4 connects and composes from top to bottom successively, it installs and fixes by stretching screw 17 upper ends and passes water exit end 8 housings, the screw jacket 16 that the lower end screws in inlet segment constitutes, main shaft 10 runs through motor cabinet 18, water exit end 8, stage casing 6, the lumen centers of inlet segment 4, main shaft 10 lower ends are mounted on the housing of inlet segment 4 by guide bearing 1, main shaft 10 upper ends are connected and fixed by pump coupling 14 and motor coupler 15, also be mounted with multi-stage impeller 3 on the main shaft 10, stator 5,7, impeller 3 and stator 5,7 all place stage casing 6 inner chambers, between water exit end 8 housings and main shaft 10, alloy mechanical seal 9 is installed, bearing 12 and bearing gland 13 then are installed between motor cabinet 18 and the main shaft 10, between main shaft impeller 3 and inlet segment 4 housings seal ring 2 is installed also, main shaft 10 adopts stainless steel to be made, and impeller 3 adopts admiralty brass to cut and forms.

Claims (1)

1, a kind of fire-fighting special vertical multistage pump, it is characterized in that by motor cabinet (18), water exit end (8), stage casing (6), inlet segment (4) connects and composes from top to bottom successively, main shaft (10) runs through the center, main shaft (10) lower end is connected on inlet segment (4) housing by guide bearing (1), main shaft (10) upper end is connected and fixed by pump coupling (14) and motor coupler (15), also be mounted with multi-stage impeller (3) on the main shaft (10), stator (5,7), impeller (3) and stator (5,7) all place stage casing (6) inner chamber, between water exit end (8) housing and main shaft (10), alloy mechanical seal (9) is installed, bearing (12) and bearing gland (13) then are installed between motor cabinet (18) and the main shaft (10), main shaft (10) adopts stainless steel to be made, and impeller (3) adopts admiralty brass to be made.

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