CN2787891Y

CN2787891Y - Improved centrifugal sand pump

Info

Publication number: CN2787891Y
Application number: CN 200420029364
Authority: CN
Inventors: 朱辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-07-20
Filing date: 2004-07-20
Publication date: 2006-06-14
Anticipated expiration: 2014-07-20

Abstract

The utility model relates to a sand pump for exploiting oil, particularly an improved centrifugal sand pump, which mainly comprises a pump body, a pump shaft, impellers, a friction pair, a plug for putting sand silk, an O-shaped sealing ring, a sealing and pressing cover, a stator ring, a moving ring and an anti-rotating pin. The utility model is characterized in that the inner side of the working surface of the moving ring is provided with 4 to 6 grooves; the anti-rotating pin comprises two symmetrical pins, the O-shaped sealing ring between the sealing and pressing cover and the stator ring is arranged on the back side of the anti-rotating pin. The utility model has the advantages that the service life of the centrifugal sand pump is extended, and the repair rate as well as the power consumption are reduced.

Description

A kind of improvement type Centrifugal Sand Pumps

Technical field

The utility model relates to the sand pump that oil drilling is used, and particularly relates to a kind of improvement type Centrifugal Sand Pumps.

Background technique

Used drilling fluid in petroleum drilling engineering, promptly mud contains a large amount of landwaste, and the solid particle of landwaste that in use must be wherein and so on is isolated fork-like farm tool used in ancient China, just can recycle.Be to adopt Centrifugal Sand Pumps that mud is boosted to be transported to the above-mentioned solid particle of removing in the mud cyclone separator in the mud now.At present, in order improving the working life of Centrifugal Sand Pumps, to reduce maintenance rate and power consumption, to adopt the way of packing seal and mechanical seal more, its effect is desirable not to the utmost.At the problems referred to above, China Patent No. ZL982419449 patent provides practical technique, uses through for many years, and the rotating ring working surface of finding this patent can not form film lubrication when rotating, and prevents working surface friction burn; When stop pin can not guarantee that friction pair compensates automatically, O-ring seals had much room for improvement to clean working surface motion.

The model utility content

The purpose of this utility model is to provide a kind of improvement type Centrifugal Sand Pumps at the above-mentioned defective that exists in the prior art.

The technical solution of the utility model mainly comprises the pump housing, pump shaft, impeller, friction pair, puts sand plug, O-ring seals, sealed cover, stationary ring, rotating ring, stop pin, it is characterized in that: its rotating ring working surface inboard is shaped on 4-6 groove, so that it forms film lubrication when rotating, prevent working surface friction burn; Stop pin is two symmetrical pin (being the screw of two rotation inhibiting originally), to guarantee invariant position in its work, rotating ring is compensated not clamping stagnation; O-ring seals between squeeze cap and stationary ring places the back of stop pin, to prevent that stop pin from contacting mud before mud pressure is passed to O-ring seals, when guaranteeing that friction pair compensates automatically, O-ring seals is to clean working surface motion, changed when friction pair compensated automatically in the past, O-ring seals moves to the working surface that mud is arranged, thereby has reduced maintenance rate and power consumption the working life of having improved Centrifugal Sand Pumps.

The beneficial effects of the utility model as mentioned above, need not be tired out and state.

Description of drawings

Fig. 1 is structural representation of the present utility model and Figure of abstract;

Fig. 2 is the elevation cross-sectional view of rotating ring 6 among Fig. 1;

Fig. 3 is the right elevation of Fig. 2.

Embodiment

See that Fig. 1-Fig. 3 is as can be known at a concrete structure of the present utility model: mainly comprise the pump housing, pump shaft, impeller, friction pair, put sand plug, O-ring seals, sealed cover, stationary ring, rotating ring, stop pin, it is characterized in that: its rotating ring 6 working surface inboards are shaped on 6 grooves 1; Stop pin is two symmetrical pin 2; The O-ring seals 5 that squeeze cap 3 and stationary ring are 4 places the back of stop pin 2.

Claims

1, a kind of improvement type Centrifugal Sand Pumps mainly comprises the pump housing, pump shaft, impeller, friction pair, puts sand plug, O-ring seals, sealed cover, stationary ring, rotating ring, stop pin, it is characterized in that: its rotating ring working surface inboard is shaped on 4-6 groove; Stop pin is two symmetrical pin; O-ring seals between squeeze cap and stationary ring places the back of stop pin.

2, want 1 described a kind of improvement type Centrifugal Sand Pumps according to right, it is characterized in that its rotating ring (6) working surface inboard can be shaped on 6 grooves (1).