CN2818862Y

CN2818862Y - Water pump

Info

Publication number: CN2818862Y
Application number: CN 200520092314
Authority: CN
Inventors: 陈彦朗
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-08-31
Filing date: 2005-08-31
Publication date: 2006-09-20
Anticipated expiration: 2015-08-31

Abstract

The utility model relates to a novel pump, which comprises a pump body, a pump cover, a bearing seat, a pump shaft, a shaft sleeve, an impeller, an oil cup, a bearing press cover, a high pressure oil seal, a sealing rubber pad, a water inlet pipe and a water outlet pipe. The utility model has the technical scheme that a skeleton type rubber annular opening ring sealing ring is arranged on an opening of an annular oil seal opening ring between the pump body and the impeller. Because the opening ring sealing ring of the utility model is designed into a skeleton type rubber oil seal and is fixed in the pump body, the inner diameter of the opening ring sealing ring and the outer diameter of the impeller adopt interference fit with the interference magnitude from 0.12 to 0.15 mm, and water in the impeller full flows into the pump body and enters the water outlet pipe through an outlet of the pump after the water obtains energy when the impeller is rotated by the driving of a power machine through the pump shaft 4. Thus, water flow (high pressure flow) on an outlet of the impeller is effectively prevented from flowing to an inlet of the impeller, the leakage cause by the existence of gaps is avoided and the volume efficiency of the pump is increased.

Description

Novel water pump

Technical field

The utility model belongs to water pump class technical field, specifically a kind of centrifugal pump or improved novel water pump of self-priming pump control ring seal of relating to.

Background technique

As everyone knows, water pump is in operation process, because impeller is rotatable parts, the pump housing is a fixed block, must leave the gap between them, and the two ends in gap exists pressure difference, thereby causes leakage.In order to prevent unnecessary leakage, must Sealing be set at gap location.And the sealing configuration that the choma place adopts in the present pump technology mainly is a clearance seal, promptly relies on throttle clearance to reach sealing purpose.Its sealing effect is relevant with shape with the throttle clearance size.The gap is more little, effect is good more.But the gap is too little, will produce vibration and cause friction damage between the impeller and the pump housing.Its reasonable gap value is taken as 0.18～0.20mm, and the suction journey is that 8～10m, lift are 10～12m.Pump already improved the choma structure afterwards, and cast iron seal ring or copper band are installed at pump housing choma position, served as wear-out part, and the wearing and tearing back only needs to change this part, avoids the overall wear of the pump housing, impeller.But improve the back because the existence in gap still produces volumetric loss, make suction journey, lift, the capacity of pump do not have increase.When particularly falling under water under the nonirrigated farmland on the same day, because the choma gap produce to leak, it is not enough to make that centrifugal pump, self-priming pump are inhaled journey, can not satisfy customer requirements.At present, be 0.15～0.20mm at common impeller of water pump industry and pump housing gap, pump efficiency only is 70%.

Summary of the invention

The purpose of this utility model provides a kind of novel water pump that improves the control ring seal structure.

The purpose of this utility model is achieved in that agent structure wherein includes the pump housing, pump cover, bearing support, pump shaft, axle sleeve, impeller, lubricating cup, bearing gland, High-pressure oil sealing, seal rubber pad, intake pipe, outlet pipe, is characterized in that: the annular oil seal choma mouth place between the pump housing and impeller is provided with a skeleton rubber annular control ring seal ring.

As required, also be provided with a hand pump, to realize manually-operable on the top of intake pipe.

Key of the present utility model is that the control ring seal ring is designed to rubber oil seal with reinforce, and be fixed in the pump housing, it is the interference fit of 0.12～0.15mm that its internal diameter and impeller outer diameter adopt magnitude of interference, like this when power engine drives the leaf rotation by pump shaft 4, water in the impeller obtains all to flow into the pump housing behind the energy, and enters outlet pipe by pump discharge.Thereby stoped impeller outlet current (high-pressure spray) to flow to the impeller inlet place effectively.The leakage of having avoided the existence because of the gap to cause has improved the volumetric efficiency of pump.

Therefore the utility model has following advantage because the annular oil seal choma mouth place between the pump housing and impeller is provided with a skeleton rubber annular control ring seal ring:

1, through practical application, the water-taking efficiency of pump is 100%, and increase capacity 30% increases and inhales journey 5m, increases lift 3m, improves the efficient of water pump.

2, the improvement of choma oil sealing is the sealing configuration that has fundamentally changed oil sealing, reaches advanced international level.

3, economize on electricity, fuel-economizing, saving labour.

4, the choma oil sealing is convenient to install.

5, the choma oil sealing is that rubber material is made, and prevents damage in impeller, has prolonged working life.

6, during pump operation, bearing damages suddenly, and oil sealing shields to impeller.

7, the utility model also have simple and reasonable, characteristics such as cost is low, and application area is wide.

Description of drawings

Fig. 1 is a Centrifugal water pump sectional structure simplified schematic diagram of the present utility model

Fig. 2 is that the A of Fig. 1 is to amplifying simplified schematic diagram

To be described in further detail model utility by example below; but following example only is the utility model example wherein; the rights protection scope of not representing the utility model and being limited, rights protection scope of the present utility model is as the criterion with claims.

Embodiment

Example 1

Shown in Fig. 1～2,14 among the figure is that the pump housing, 13 is that pump cover, 6 is bearing support, is disposed with pump shaft 4, bearing 3, gland 8, High-pressure oil sealing 9, packing 10 and axle sleeve 11 in bearing support 6; Impeller 15 is fixedly installed on the end of pump shaft 4, is being provided with lubricating cup 5 on the bearing support 6 with on the relative position of bearing 3, and bearing gland 2 is installed in the end near the bearing support 6 of bearing 3.Among the figure 18 is intake pipe, and 7 is outlet pipe, also is provided with a hand pump 20 on the top of intake pipe 18.Annular oil seal choma mouth place between the pump housing 14 and impeller 15 is provided with a skeleton rubber annular control ring seal ring 16.In addition, 1 among the figure is for connecting the V belt of power system, and 12 and 17 are seal rubber pad, and 19 are the water inlet elbow.

During installation,, open intake pipe, oil sealing is compressed into the choma mouth as long as be coated with full quick lime grease at the oil groove place of oil seal spring inlet and oil sealing, and then intake pipe is good and sound, can use.Said structure is applicable to that two cun pumps, three cun pumps, little four cun pumps, special four cun pumps, six cun pumps, eight cun pumping hole ring oil sealings, two cun self-priming pumps, three cun self-priming pumps, four cun self-priming pumps, six cun self-priming pump choma oil sealings use.Using method and traditional water pump are as good as.

Claims

1, a kind of novel water pump, it includes the pump housing, pump cover, bearing support, pump shaft, axle sleeve, impeller, lubricating cup, bearing gland, High-pressure oil sealing, seal rubber pad, intake pipe, outlet pipe, it is characterized in that: the annular oil seal choma mouth place between the pump housing and impeller is provided with a skeleton rubber annular control ring seal ring.

2, water pump according to claim 1 is characterized in that: the top at intake pipe also is provided with a hand pump.