CN2076180U - Centrifugal wheel - Google Patents

Abstract

The utility model relates to a centrifugal wheel of which the inner is provided with a water cavity and the both ends of the water cavity is provided with a water entering mouth and a water discharging mouth. Because the water entering mouth is small and the water discharging mouth is large, a vacuum triangular area is generated in the cavity. The water entering mouth near the wheel and the ring-shaped board of the cavity are provided with holes; when the wheel rotates at a high speed, the water enters into the water cavity from the water entering mouth and the holes simultaneously, the quantity of water entering of the wheel is increased and the triangular area is reduced.

Description

Centrifugal wheel

The utility model relates to a kind of power spare--centrifugal wheel that extracts and improve the pump of pressure continuously in liquid medium.

With regard to present clean waterpump, the design of centrifugal wheel, along with the model difference, the diameter at the diameter of wheel, intake-outlet place is high more different than φ 1/ φ 2 and wheel.Liquid sucks and supercharging under spacer function by the centrifugal wheel chamber when centrifugal wheel runs up, but can produce vacuum phenomenon in pressurization, can make the liquid gasification, and this directly influences the efficient of pump.

In fluid mechanics, water speed is by accelerating slowly in seal container with the water of measuring, and water from the coarse to fine.The centrifugal wheel inlet water speed of running is slow, and it is fast to go out saliva speed, and actual wheel chamber exit face is much larger than inlet face, the most of volume in outlet port is empty like this, just drawn here into negative pressure region, also just be difficult to eliminate the gasification phenomenon that pump is in operation, the high pressure water of discharge is returned.

In order to solve the gasification problem, change the boundary dimension of centrifugal wheel, ratio, but be difficult to solve this defective, the effectiveness of pump can not obviously be improved always.

The purpose of this utility model is that a kind of improved centrifugal wheel will be provided, and it can prevent the gasification phenomenon of liquid in pressurization effectively.

The purpose of this utility model is achieved in that on each chamber of the water inlet one side of centrifugal wheel, by lonely recessed STH, communicates with feed source, sets up breviseptum in the chamber.When the wheel running, what the negative pressure region in chamber obtained is not anti-phase high pressure water, but low-pressure water has been dwindled negative pressuren zone, has prevented that high pressure water from returning.Water (flow) direction one side that the steel ring position moves on to new perforate makes water can enter the hole, and 30 °～60 ° inclination angle is made on the limit, hole, in order to water inlet.

The utility model is set up the displacement of breviseptum and steel ring, so structure is simple especially because only need perforate on wheel.Simultaneously owing to have in mind and be not to change the direction of a stream of water, to the rotating speed of pump and mode of operation without any special requirement, so realize easily.

The concrete structure of model utility is provided by following embodiment and accompanying drawing.

Fig. 1, Fig. 2 are centrifugal wheel sectional drawing and the half front elevation half-sectional views according to the pump that the utility model proposes.Fig. 1 middle pump body (1), steel ring (10).

As shown in Figure 1, centrifugal wheel is that a centre has the oblate of cavity to take turns, and it is made up of annular slab (14) and circular plate (13), and the centre has 6 dividing plates (3) perpendicular to annular slab (14) to connect.In Fig. 2, the dividing plate (3) from the internal circle of annular slab (14) to outer circumferential edge is divided into 6 centrifugal chambeies of spirality (4) to cavity, and breviseptum (5) is arranged in centrifugal chamber (4).The endoporus of annular slab (14) is the water intake of centrifugal chamber (4), and outer circumferential edge is the water outlet of centrifugal chamber (4), for the high pressure water that prevents to throw away flows back to inlet, coincide by sealing steel rings between the centrifugal wheel and the pump housing, cuts off the outer passage of wheel by seal ring.

Describe details and working condition in detail below in conjunction with Fig. 2 according to the concrete device that the utility model proposes.

This device comprises a centrifugal wheel main body (2), and a plurality of dividing plates (3) are arranged in the main body, and centrifugal chamber (4) is arranged between dividing plate, breviseptum (5).

On the centrifugal wheel that rotates along direction shown in the arrow (6), water (7) is done reverse (8) and is moved, the speed of water (7) is by accelerating slowly, water from the coarse to fine, the protruding sidepiece that is close to dividing plate (3) flows, and forms the negative pressuren zone (12) of △ in the recessed side of chamber central diaphragm (3), at negative pressuren zone, wheel front annular slab (14) suitable position perforate (9) increases water inlet (11), thereby dwindles negative pressuren zone, alleviates the gasification phenomenon.

Claims (3)

1, a kind of centrifugal wheel is made up of annular slab (14), garden shape plate (13) and intermediate clapboard (3), and centrifugal chamber (4) is arranged between two plates, it is characterized in that perforate on the annular slab of each centrifugal chamber (4).

2, according to the centrifugal wheel of claim 1, it is characterized in that: breviseptum (5) is arranged in centrifugal chamber (4).

3, according to the centrifugal wheel of claim 1, it is characterized in that: 30 °～60 ° inclination angles are made on the limit in hole.

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