CN200940598Y

CN200940598Y - Novel mortar pump

Info

Publication number: CN200940598Y
Application number: CN 200620132279
Authority: CN
Inventors: 季裕成
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-16
Filing date: 2006-08-16
Publication date: 2007-08-29
Anticipated expiration: 2016-08-16

Abstract

The utility model provides a new type mortar pump, comprises a pump body which is provided with a liquid inlet and a liquid outlet. An impeller is arranged in the inner cavity of the pump body. The impeller is fixedly arranged on the end of the pump shaft which is driven by a motor. A shaft sleeve, which is arranged on the pump shaft, is characterized in that the shaft sleeve is whole silicon carbide. At least one ring sealing cycle, which is provided with a V shape section and is made from fluorine rubber material, is arranged between the shaft sleeve and the sealing pressure cover which is fixedly arranged on the pump body. The ring sealing cycles are arranged on the shaft sleeve orderly and sequentially with the V shape opening pointing to the impeller direction. The benefits of the utility model are as follow: the mechanical sealing part, which adopts whole silicon carbide, avoids the local exfoliation of the anticorrosion layer. The anticorrosion and abrasion resisting performance of the utility model is improved. By adopting the V shape ring sealing cycle as stop sealing, the friction between the sealing cycle and the shaft sleeve can be avoided.

Description

A kind of new type mortar pump

Technical field:

The utility model relates to a kind of improvement of new type mortar pump.

Background technique:

At present, mortar pump adapts to various operating mode, as carries acid, alkaline clear liquid or slip, the various sewage of the various corruption ore pulps of metallurgy industry, environmental protection industry (epi).Not only require to have very strong corrosion resistance for mortar pump, but also need the tool good sealing property.Original mortar pump be metal pump housing inside liner plastics anticorrosive coat (promptly with the pump housing that medium contacts in, plastics anticorrosive coat on the end face of pump cover, impeller, pump shaft surface lining) this common mortar pump has certain effect for the corrosion that solves the pump housing, but, there is a lot of deficiencys, for example: the inside liner plastics,, poor adhesive force between the anticorrosive coat and the pump housing, after using a period of time, anticorrosive coat just begins to produce the local shedding phenomenon, thereby has reduced the working life of mortar pump.Moreover, present inside lining anti-corrosive layer mortar pump, owing to exist the motion friction between the pump housing and the pump shaft, the as easy as rolling off a log wearing and tearing of pump shaft anticorrosive coat and shaft sealing cause the pump housing poorly sealed.Particularly when the solid particle that exists in the medium of carrying was a lot, mortar pump damage in impeller phenomenon was also very serious.

Summary of the invention:

The utility model provides a kind of new type mortar pump, and its purpose is to solve the shortcoming that prior art exists, and improves the corrosion resistance and the abrasion resistance properties of mortar pump, thereby improves its life-span.

For achieving the above object, adopt following technological scheme:

A kind of new type mortar pump, comprise the pump housing with liquid entering hole and liquid outlet, pump housing inner chamber is provided with impeller, impeller is installed in the end by motor-driven pump shaft, be arranged with axle sleeve on the pump shaft behind the impeller, it is characterized in that: axle sleeve is whole carbofrax material, and axle sleeve and being installed in has one between the sealing gland on the pump housing be the O-ring seal that the fluorine rubber material of V-type is made with the upper section, O-ring seal order arrangement successively is set on the axle sleeve, and the V-type opening is towards the impeller direction.

Usefulness of the present utility model is: axle sleeve adopts whole carbofrax material, avoids anticorrosive coat local shedding phenomenon, and decay resistance and abrasion resistance properties improve, and adopts the V-type O-ring seal to do parking sealer, the friction of sealing and axle sleeve when having avoided running.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 the utility model structural representation

Embodiment

As shown in Figure 1, the utility model is a kind of new type mortar pump, comprises the pump housing 1 with liquid entering hole 11 and liquid outlet 12, and the pump housing 1 inner chamber is provided with impeller 2, impeller 2 is installed in the end by motor-driven pump shaft 3, is positioned on the pump shaft 3 of position after the impeller 2 to be arranged with axle sleeve 4.

Axle sleeve 4 is whole carbofrax material, axle sleeve 4 and be installed in the O-ring seal 6 that fluorine rubber material that to have 4 cross sections between the sealing gland 5 on the pump housing 1 be V-type is made, 4 O-ring seals 6 are arranged in proper order successively and are set on the axle sleeve 4, and the V-type opening forms parking sealer towards impeller 2 directions.

During impeller 2 runnings, mainly the centrifugal force that is produced by impeller 2 rotations makes impeller 2 Seal cage 20 afterwards be in negative pressure state, thereby stoped media fluid outwards to be revealed, this moment, parking sealer was inoperative, annular rubber ring 6 the V-type opening inwardly close because of negative pressure, produce certain interval with axle sleeve 4, reduce the abrasion between it, prolonged working life.Impeller 2 does not turn round when promptly stopping yet, because impeller 2 stops the rotation, Seal cage 20 transfers malleation to because of negative pressure, parking sealer is started working, the V-type opening of annular rubber ring 6 tightly encases axle sleeve 4 because outwards open under the pressure effect, thereby reach the purpose of sealing, the employing fluorine rubber of annular rubber ring 6 is made, and is mainly used in to carry the slurries that contain solid particle.

In addition, the pump housing 1 adopts the no iron and steel inserts of perfluoroethylene-propylene material (being the F46 material), so can not produce shelling or distortion, the pump housing 1 also can adopt the no iron and steel inserts of polyvinyladine floride (also claiming PVDF).Pump shaft 3 adopts the SS2324 dual phase steel, improves antiseptic property.

Claims

1, a kind of new type mortar pump, comprise the pump housing with liquid entering hole and liquid outlet, pump housing inner chamber is provided with impeller, impeller is installed in the end by motor-driven pump shaft, be arranged with axle sleeve on the pump shaft behind the impeller, it is characterized in that: axle sleeve is whole carbofrax material, and axle sleeve and being installed in has one between the sealing gland on the pump housing be the O-ring seal that the fluorine rubber material of V-type is made with the upper section, O-ring seal order arrangement successively is set on the axle sleeve, and the V-type opening is towards the impeller direction.