CN2821234Y - Variable pump - Google Patents

Abstract

The utility model relates to a variable pump. Under the action of definite dynamic force, the actual flow rate of the pump can be varied with the variation of an actual measuring range. Therefore, a dynamic force source is made full use of and the application range of the pump is enlarged. The utility model is composed of a water inlet head, a pump case, vanes, a small shaft, a big shaft, a water outlet head, a side cover, a bearing, a shaft sleeve and a belt wheel. When a measuring range is low, a flow rate is large obviously, therefore the work efficiency is improved and the cost is saved. When a measuring range is high, the flow rate can be also kept and dynamic force seems to be enough.

Description

Variable displacement pump

One, technical field:

The utility model relates to a kind of pump, and especially flow can change and the variable displacement pump of significant change with range.

Two, background technique:

Present common pump, its flow all is certain.As water pump, all indicate certain flow, range and power.When joining sufficient kinetic pump water, no matter actual range is near specified range, and still much smaller than specified range, its flow does not all have big variation.But according to the acting principle, water pump equals to pump the weight of water to the water work long-pending with the height of liter waterborne, i.e. explanation: in input power one timing, the actual flow of water pump should diminish with actual range (greatly) become (little) greatly.Especially when actual range was very little, actual flow should be very big.That is to say that at this moment we have wasted a large amount of power resourcess.This phenomenon is the most obvious when draining flooded fields with water pump and use water irrigation on the ground.Improve pump water cost unintentionally, also reduced the utilization rate of water pump, wasted a large amount of precious resources.

Three, summary of the invention:

The purpose of this utility model provides a kind of variable displacement pump: under certain dynamic action, the actual flow of pump can become big (diminishing) with diminish (the becoming big) of actual range, thereby utilizes power resources fully, enlarges the application area of pump.

The utility model is achieved in that it is made up of water inlet head, pump case, blade, little axle, macro-axis, Water outlet, side cover, bearing, axle sleeve, belt wheel.Repeatedly kick under the pump case and connect the passage that Water outlet and side cover constitute water together on the head.Blade has two, combines, and is the double helix band shape.The elasticity of blade is fine, and is harder.At big shaft end one aperture is arranged, little axle passes the aperture of big shaft end, is connected with an end of two blades, constitutes the pump water assembly, and water is done work.The other end place of blade also has certain space, to make things convenient for water outlet.The embedded bearing in axle sleeve two, the supporting macro-axis, and be connected on the side cover.The outer end of macro-axis is connected with belt wheel.

During work, belt wheel drive macro-axis, little axle, blade rotate together, carry out pump water.Because blade is flexible, and only an end is semifixed on macro-axis by little axle, and other positions can horizontally slip on macro-axis.So when liquid was diminished to the pressure of blade, blade can elongation under elastic reaction.Like this, it is big that the curvature of blade becomes, and it is big that the workload that turns around also becomes thereupon, big thereby flow also becomes; When range was constant, blade was not changing yet, and flow also settles out; When range became big, blade can be compressed as spring and shorten, and curvature diminishes, thereby flow also diminishes, still can proper functioning, keep certain flow, and the power foot that seems.

The utility model deft design, economical and practical, applied range, with conspicuous characteristics.When range was low, flow was big significantly, thereby can increase work efficiency, and saved cost.When range is higher, also can keep certain flow, the power foot seems.

Four, description of drawings:

Fig. 1 is the variable displacement pump structural representation, (1) water inlet head, (2) pump case, (3) blade, (4) little axle, (5) macro-axis, (6) Water outlet, (7) side cover, (8) bearing, (9) axle sleeve, (10) belt wheel among the figure.

Five, embodiment:

Repeatedly kick under the pump case (2) and connect the passage that Water outlet (6) and side cover (7) constitute water together on the head (1).Little axle (4) passes the terminal aperture of macro-axis (5), is connected with an end of two blades (3).The embedded bearing in axle sleeve (9) two (8), supporting macro-axis (5), and be connected on the side cover (7).The outer end of macro-axis (5) is connected with belt wheel (10).

Claims (2)

1, variable displacement pump is made up of water inlet head (1), pump case (2), blade (3), little axle (4), macro-axis (5), Water outlet (6), side cover (7), bearing (8), axle sleeve (9), belt wheel (10), it is characterized in that: repeatedly kick under the pump case (2) and connect the passage that Water outlet (6) and side cover (7) constitute water together on the head (1), little axle (4) passes the terminal aperture of macro-axis (5), be connected with an end of two blades (3), the embedded bearing in axle sleeve (9) two (8), supporting macro-axis (5), and be connected on the side cover (7), the outer end of macro-axis (5) is connected with belt wheel (10).

2, variable displacement pump according to claim 1 is characterized in that: blade (3) is the double helix band shape, and elasticity is fine, and blade (3) one ends are fixed on the macro-axis (5) by little axle (4), and other positions can horizontally slip on macro-axis (5).

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