CN2310880Y - Agricultural submersible spray pump - Google Patents

Abstract

The utility model relates to an agricultural submersible spray pump. A pump body and a pump cover are fixedly connected with an electric motor. The rotor of a water pump is directly driven by the output shaft of the electric motor. The pump body is provided with a flow supply shoulder. The water is sucked into the pump cavity from the bottom through the flow supply shoulder, and the water can output the pressure higher than the centrifugal pump. The utility model has the advantages of compact structure, small volume and convenient portability, is suitable for being arranged in the water tank to use, and is especially suitable for high-density spray use of greenhouse planting, farmland, etc.

Description

A kind of agricultural submersible type atomizing pump

This pump belongs to non-appearance and becomes class pump, specifically a kind of submersible type atomizing pump.

Existing atomizing pump is not seen submersible pump, and the low and flow of existing centrifugal submersible pumps pressure is excessive not to satisfy the spraying requirement.Concerning centrifugal pump, it is gone up near the limit in the design of its impeller, and the delivery pressure that relies on the raising rotating speed to improve centrifugal pump simply is subjected to the restriction of China's prior art level again.Peripheral pump under the same peripheral velocity may be than the delivery pressure of centrifugal pump more than the high twice, but just seem not enough in the occasion that requires certain inlet capacity, especially requirement must be just more difficult from the occasion that end face sucks, employing adds the first-stage centrifugal pump before peripheral pump method can improve, but just not all right, and increased cost in the occasion that volume requirement is relatively stricter.

The purpose of this utility model provides that a kind of flow is little, pressure is high, can guarantee the submersible type atomizing pump of spray flux density and spraying area coverage.

The structure that this pump adopts the pump housing, pump cover and motor to connect firmly, the impeller of pump is directly installed on the motor output shaft, compact structure.One flow convex shoulder is set on the pump housing, and water sucks pump chamber by the bottom through the flow convex shoulder, and the inlet capacity of this pump is improved a lot.Be provided with dividing plate between its blade of described impeller, its role is to adjust the runner inner fluid flowing state, improve inlet capacity, improve cavitation performance.The processing of this pump is simple, cost is low, volume is little, can be placed in the bucket to use, also can be in well usefulness, be fit to very much the spraying of greenhouse gardening and farmland.Elaborate below in conjunction with the substantive distinguishing features of accompanying drawing to this model utility.

Fig. 1 is this pump structure schematic representation.

Fig. 2 is the blade wheel structure schematic representation.

Fig. 3 is this pump work principle schematic.

Referring to Fig. 1, the pump housing 1 of pump, pump cover 3 directly connects firmly together with motor casing 7, by base 13 supports.Impeller 2 is directly driven by the output shaft 11 of motor 4, by water sucking mouth 17 flow into water in the pump chambers through the impeller speedup supercharging of high speed rotating after drain opening 14 discharge.Pump cover 3 is formed confined spaces with motor casing 7, in fill lubricant oil, lubricating mechanical sealing assembly 9, and form reliable sealing to motor 4 with water seal 10.Oil hole is opened on motor casing, also can open on pump cover.Be between pump cover 3 and motor casing 7, the pump housing 1 and cooperate connection, with the sealing of O type circle, compress by end face, with bolt they are connected firmly together, such structure not only can guarantee to seal reliably but also can guarantee assembly precision.On impeller 2, also be provided with equalizing orifice for eliminating axial force.The effect of nut 12 is to avoid impeller directly to contact with the pump housing.

As Fig. 2, a dividing plate 15 is arranged between water sucking mouth 17 and drain opening 14, the suction mouth of a river is separated, the dividing plate cornerite should be not less than 2 times of leaf angles, and the radial clearance between dividing plate and the blade cylindrical is 0.05-0.30mm.Next-door neighbour's dividing plate 15 is provided with a flow convex shoulder 16, the cornerite of flow convex shoulder is a 1-4 leaf angle, and the water sucking mouth is from the starting point of flow convex shoulder, and its cornerite scope is slightly larger than the convex shoulder cornerite, radially blade is formed part and hide, external diameter is more than or equal to flowing to the external diameter of adjusting plate 18 between blade.The flow principle is: when the inswept flow convex shoulder of blade high speed rotating, under the action of the centrifugal, liquid radially, axially (mainly bring into) by the top vortex, tangent direction (along flow convex shoulder side, mainly being caused by wheel rotation) sucks runner, and the inlet capacity of this pump is strengthened.

As Fig. 3, between two blades, be provided with and adjust the flow direction adjustment plate 18 that the liquid flow path direction is used, it highly is a 1/3-3/4 blade height, main shape and size decision by runner.When the impeller high speed rotating, interlobate liquid at action of centrifugal force lower edge radial flow to runner, the fluid pressure of sheet root reduces, liquid in the runner flows into blade simultaneously, two so-called vertical vortexs have up and down so just been formed, so its working principle is consistent with peripheral pump, but has improved inlet capacity, has improved cavitation performance.The main hydraulic component parameter of this pump can be determined with reference to corresponding peripheral pump.

Fig. 4 is the profile schematic representation that water outlet is located at the pump bottom.

Fig. 5 is that water outlet is located at pump top one structure embodiment.Also have one deck pump case 19 outside motor casing 7, the pump cover external diameter is enlarged, pump case is installed on the pump cover, outlet passage seals with O type circle between the pump cover and the pump housing, water is discharged by the top water outlet through motor housing, has realized that motor is self cooling, and such structure can make the pump work of surfacing for a long time.

Claims (4)

1, a kind of agricultural submersible type atomizing pump is made up of the pump housing, pump cover and motor, and impeller is directly installed on the motor output shaft, it is characterized in that: pump cover (3) cooperates connection with the pump housing (1), motor casing between (7), with the sealing of O type circle, compress by end face, with bolt they are combined as a whole.

2, by the described submersible type atomizing pump of claim 1, it is characterized in that: between water sucking mouth (17) and drain opening (14) dividing plate (15) is arranged, next-door neighbour's dividing plate (15) is provided with a flow convex shoulder (16), and the cornerite of convex shoulder (16) is a 1-4 leaf angle.

3, by the described submersible type atomizing pump of claim 1, it is characterized in that; Water sucking mouth (17) is opened in the end face of the pump housing (1), the starting point from flow convex shoulder (16), and its cornerite scope is slightly larger than the cornerite of convex shoulder (16), radially blade is formed part and hides.

4, by the described submersible type atomizing pump of claim 1, it is characterized in that: described impeller (2) is gone up to be provided with between any two blades to flow to and is adjusted plate (18), and it highly is a 1/3-3/4 blade height.

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