CN201090501Y

CN201090501Y - Sand pump

Info

Publication number: CN201090501Y
Application number: CNU2007201172424U
Authority: CN
Inventors: 马建春; 周荣慧; 郭艳娟; 李柏歧; 刘坤; 姜官军
Original assignee: Daqing Petroleum Administration Bureau
Current assignee: Daqing Petroleum Administration Bureau
Priority date: 2007-10-22
Filing date: 2007-10-22
Publication date: 2008-07-23
Anticipated expiration: 2017-10-22

Abstract

Disclosed is a sand pump which comprises a mechanical seal shell (6); a sleeve (18) is arranged in the mechanical seal shell (6); a spring (3) is sleeved on the shaft of the sleeve (18), both ends of the spring (3) are provided with a thrust ring (4) and a dynamic ring (9) which are symmetrical and respectively sleeved on the shaft, a dynamic ring seal ring (5) is arranged between the dynamic ring (9) and the shaft, and two static rings (8) are symmetrically arranged at both sides of the dynamic ring (9); one end of the mechanical seal shell (6) is provided with a gland bush (1) with bolt points (2) and the shaft corresponded to the other end of the mechanical seal shell (6) is sleeved by an auxiliary impeller (11), a bush (13) is arranged between the auxiliary impeller (11) and an impeller (14) and an O-shaped seal ring (12) is arranged between the auxiliary impeller (11) and the shaft. The utility model solves the problems of easy wear of the seal of the sand pump and slurry leakage, extends the service life of the mechanical seal and guarantees the reliability of sealing effect.

Description

A kind of sand pump

Technical field:

The utility model relates to a kind of sand pump.

Background technique:

Sand pump is to join devices such as slurry for the sand remover in the drilling fluid solid control equipment, desilter, eddy flow power is provided, and sand pump can inject these cyclone separators with certain pressure with the drilling fluid that contains solid phase particles, to isolate solid phase particles.In recent years, many drilling company were that the supporting feed flow sand pump of clean drilling liquid usually exists after operation a period of time with regard to the problem of spillage; In addition owing to sand pump in the drilling process usually turned round tens days continuously, and the working medium mud that sand pump is carried contains corrosive material, temperature height and contain hard material such as a large amount of sand grains, the sand pump load that withstands shocks is simultaneously vibrated more seriously, so the feed flow sand pump also belongs to easily damaged parts.Leakage is serious, and the Sealing quality does not pass a test, and many component are fragile etc.

The model utility content:

In order to solve the problem in the background technique, the utility model provides a kind of sand pump, and this sand pump has solved the easy to wear and mud leakage problem of sand pump sealing, has prolonged mechanical seal working life, guarantees that sealing effect is reliable.

The technical solution of the utility model is: this sand pump comprises the mechanical seal housing, in the mechanical seal housing sleeve is arranged, be with spring on the axle in the sleeve, there are throw-out collar and moving ring sleeve in the two ends of spring symmetry respectively on axle, between rotating ring and the axle seal ring of moving ring is arranged, the bilateral symmetry of rotating ring has stationary ring, one end of mechanical seal housing has the gland of band screw hole, be with sub-propeller on the axle of the other end correspondence of mechanical seal housing, between sub-propeller and the impeller lining is arranged, between sub-propeller and the axle " O " RunddichtringO is arranged.

Between above-mentioned stationary ring and gland, the mechanical seal housing stationary ring seal ring is arranged respectively, stationary ring is fixed by stop pin; The two ends of spring are enclosed within respectively on the shoulder of throw-out collar; Impeller is fixed on the axle by acorn nut and nut, between impeller and the nut pad is arranged.

The utlity model has following beneficial effect: the mode of this novel employing compound seal is that mechanical seal adds sub-propeller dynamic seal structure, sand pump adopts axial suction structure simultaneously, flow passage components are antifriction cast iron, feed flow sand pump spillage and sealing problem easy to wear have been solved, can satisfy and carry different specific weight under particular job environment, the mud of different viscosities and conveying severe corrosive, the medium that contains solid particle, mechanical seal can be used for high temperature, low temperature, high pressure, vacuum, the different rotary frequency, be applicable to the occasion that sealing is higher, as carry acid, alkali, inflammable, explosive, the poisonous liquid that contains the abrasive particle medium that reaches.The versatility and the interchangeability of its part of mechanical seal are strong, mechanical seal adds sub-propeller dynamic seal structure and has reliable performance, good sealing effect, long service life, pump efficiency height, axle envelope do not have reveal, easy to maintenance, advanced design, needn't often keep in repair, advantage such as reliable operation.

Description of drawings:

Accompanying drawing 1 is a partial sectional view of the present utility model.

1-gland among the figure, 2-screw hole, 3-spring, 4-throw-out collar, 5-seal ring of moving ring, 6-mechanical seal housing, 7-stationary ring seal ring, 8-stationary ring, 9-rotating ring, 10-stop pin, 11-sub-propeller, 12-" O " RunddichtringO, the 13-lining, 14-impeller, 15-pad, 16-nut, 17-acorn nut.

Embodiment:

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

Shown in Fig. 1, this sand pump comprises mechanical seal housing 6, sleeve 18 is arranged in the mechanical seal housing 6, be with spring 3 on the axle in the sleeve 18, the two ends of spring 3 symmetry respectively have throw-out collar 4 and rotating ring 9 to be enclosed within on the axle, the two ends of spring 3 are enclosed within respectively on the shoulder of throw-out collar 4, there is seal ring of moving ring 5 to prevent leakage between rotating ring 9 and the axle, the bilateral symmetry of rotating ring 9 has stationary ring 8, have stationary ring seal ring 7 to prevent leakage respectively between stationary ring 8 and gland 1, the mechanical seal housing 6, stationary ring 8 is fixed on the housing by stop pin 10 and does not rotate with axle; One end of mechanical seal housing 6 has the gland 1 of band screw hole 2, be with sub-propeller 11 on the axle of the other end correspondence of mechanical seal housing 6, between sub-propeller 11 and the impeller 14 lining 13 is arranged, there is " O " RunddichtringO 12 to prevent leakage between sub-propeller 11 and the axle, impeller 14 is fixed on the axle by acorn nut 17 and nut 16, between impeller 14 and the nut 16 pad 15 is arranged.

This is novel, and to adopt the mode of compound seal as mentioned above be that mechanical seal adds sub-propeller dynamic seal structure: mechanical seal is the running shaft motive sealing, and it is made of being fixed on stationary ring 8 (stationary ring 8 is fixed on the pump case by stop pin 10) on the pump case and throw-out collar 4 and spring 3 with another a pair of rotating ring 9 that is contained in the rotating shaft.After mud enters the mechanical seal chamber, because rotating ring 9 abuts against each other by spring force and relatively rotates with axle with the end face of stationary ring 8, make the mud can't driven torus 9 and the gap seepage of 8 of stationary rings, thereby stop mud to leak, played the effect of sealing from the sand pump axle head.

Mechanical seal is applicable to the higher occasion of sealing, as carries acid, alkali, inflammable, explosive and poisonous liquid, and relatively advantage is as follows with soft packing seal:

1. sealing is reliable, and sealing state is very stable in long-term operation, and amount of leakage is very little, and its leakage is about 1% of soft packing seal.

2. long service life generally can reach 1～2 year or longer in oil, aqueous medium, generally can work more than half a year in chemical medium.

3. it is little to wipe power consumpiton, and its friction horsepower only is 10%～50% of soft packing seal.

4. axle or axle sleeve do not wear and tear basically.

5. service cycle is long, can compensate automatically behind the end wear, does not need running maintenance generally speaking.

6. good anti-vibration is insensitive to the deflection of Seal cage to the vibration and the axle of running shaft.

7. applied widely, mechanical seal can be used for high temperature, low temperature, high pressure, vacuum, different rotary frequency, and various aggressive medium and the sealing that contains the abrasive particle medium.

The sub-propeller dynamic seal: sub-propeller sealing is that a sub-propeller 11 that spoke helps has been installed behind impeller 14, this spoke help sub-propeller 11 be hot charging on axle, after cooling, promptly tightly bind round on axle, and with coaxial rotation; 14 in impeller is fixed on the axle by key.When impeller 14 runnings, mud may enter in the sub-propeller 11 place chambers by pump case under the effect of impeller 14, because sub-propeller 11 with coaxial rotation, can get rid of mud in the chamber to the edge, form vacuum near the axle place like this, effectively stoped mud to leak along axle head.This seal arrangement has solved the transh pump sealing problem.Utilize the sub-propeller seal arrangement of this method design to reach expected result, not only guaranteed sealing but also can improve the operating conditions of bearing.

Site test proves that mechanical seal adds sub-propeller dynamic seal structure and has reliable performance, good sealing effect, and long service life, advantage such as easy to maintenance have solved the easy to wear and mud leakage problem of sand pump sealing.

Claims

1. sand pump, comprise mechanical seal housing (6), it is characterized in that: sleeve (18) is arranged in the mechanical seal housing (6), be with spring (3) on the axle in the sleeve (18), the two ends of spring (3) symmetry respectively have throw-out collar (4) and rotating ring (9) to be enclosed within on the axle, between rotating ring (9) and the axle seal ring of moving ring (5) is arranged, the bilateral symmetry of rotating ring (9) has stationary ring (8), one end of mechanical seal housing (6) has the gland (1) of band screw hole (2), be with sub-propeller (11) on the axle of the other end correspondence of mechanical seal housing (6), between sub-propeller (11) and the impeller (14) lining (13) is arranged, between sub-propeller (11) and the axle " O " RunddichtringO (12) is arranged.

2. according to right 1 described sand pump, it is characterized in that: between stationary ring (8) and gland (1), the mechanical seal housing (6) stationary ring seal ring (7) is arranged respectively, stationary ring (8) is fixing by stop pin (10).

3. according to right 2 described sand pumps, it is characterized in that: the two ends of spring (3) are enclosed within respectively on the shoulder of throw-out collar (4).

4. according to right 1 described sand pump, it is characterized in that: impeller (14) is fixed on the axle by acorn nut (17) and nut (16), between impeller (14) and the nut (16) pad (15) is arranged.