CN2212096Y

CN2212096Y - Vertical mud pump

Info

Publication number: CN2212096Y
Application number: CN 94223410
Authority: CN
Inventors: 沈相栋
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-28
Filing date: 1994-09-28
Publication date: 1995-11-08
Anticipated expiration: 2004-09-28

Abstract

The utility model relates to a mud pump used for driving circulating media in two directions in the construction of a drilling machine, which is composed of an electric motor, a pump, valves and a pipeline, wherein, the pump is in a vertical structure, the inner part of a connection mechanism of a main shaft and an impeller is provided with an anti-reverse positioning pin, and the pump, the valves and the pipeline form a ring structure which is provided with a suction inlet, an outlet and a common port; as a result, one pump replaces the functions of three pump sets; the vertical mud pump does not need stopping, and the circulation direction of the medis can be changed through opening and closing the corresponding valves. The vertical mud pump has the advantages of simple structure, convenient starting and operation; the gas leakage is avoided, and the reliability and the work efficiency are visibly improved. Compared with the traditional pump set, the utility model can save two third materials and 33.9 percent power.

Description

Vertical mud pump

The utility model relates to the transh pump technical field, especially the vertical slurry pump of positive and negative bi-directional drive circulatory mediator cooling drill bit of energy and deslagging in drilling machine construction.

When rig is holed well-digging in foundation engineering, must there be slurry pump supporting with it, be used to drive circulatory mediator cooling drill bit and deslagging.At present, employed circulatory mediator drive unit is the slurry pump group in positive and negative Bidirectional Flow technology.The 6BS type gravel pump group of producing as Henan Province's geological exploration machinery plant is exactly to be made up of 6BS gravel pump, 3PNL slurry pump, 2BL-6 centrifugal water pump, three motor, electric control box, base, three valves and pipeline.Wherein gravel pump is the single-stage horizontal centrifugal pump, suction washing solution when being used for reverse circulation drilling, washing solution circulation and deslagging when realizing creeping into; Water seal and cooling packing when the 2BL-6 centrifugal water pump is used for gravel pump work; 3PNL vertical single-stage slurry pump drives mud circulation when being used for direct circulation and creeping into, perfusion starting gravel pump is made tonified the slurry pump in addition again and used during reverse circulation drilling.There is following deficiency in this class pump group: 1, the pump group is made of three pumps, complex structure, heaviness, and carrying and installation inconvenience, energy consumption is big; 2, as the gravel pump of main pump because of being horizontal type structure, easily cause gas leakage, starting difficulty; 3, if will change the medium circulation direction, must shut down earlier, reset operation inconvenience again; 4, when adopting the normal circulation technology flow process,, little because of this pump displacement, efficient is low, has often prolonged drilling time only with the circulation of 3PNL pump driven medium; 5, owing in the bindiny mechanism of the main shaft of 3PNL pump and impeller anti-reverse mechanism is not set,, easily break part in the pump in case the motor power misphase reverses.

The purpose of this utility model is to overcome the deficiency of above-mentioned slurry pump group, and the slurry pump of converted horizontal structure is a vertical structure, to avoid gas leakage, is convenient to starting; Improve the pipeline system structure, substitute former three pump assembly functions, realize positive and negative two-way circulation technology flow process with a pump; Improve the main shaft of pump and the linkage structure of impeller, anti-reverse mechanism is set, improve functional reliability, thereby provide a kind of simple in structure, in light weight, fitting operation is convenient, reliable performance, energy-saving material-saving, the new-type mortar pump that work efficiency is high.

The purpose of this utility model is achieved in that the slurry pump that adopts a vertical structure, respectively be connected threeway with output on the main line at its suction port and be divided into two branch lines, wherein a branch line separately is connected to mud pit respectively behind the serial connection valve, be merged into common line through threeway again behind separately another branch line serial connection valve, and be connected to drilling rod.Constitute thus with alternative three pumps of a pump, realize the function of positive and negative bi-directional drive medium circulation.

In order to prevent to cause that because of motor power misphase counter-rotating the blade wheel of slurry pump loose or dislocation breaks part in the pump, on the end face that the axle sleeve and the impeller that are enclosed within on the main shaft join, be provided with anti-reverse location pin vertically.

Advantage of the present utility model is: substituted three pump groups that pump is formed with a pump and supporting pipelines, not only realized positive and negative two-way circulatory function, and simplified the structure greatly, avoided gas leakage, be convenient to starting, improved reliability and working efficiency, material-saving, energy-saving effect are obvious.4PNL type slurry pump with this programme design is an example, has alleviated 2/3 than traditional 6BS gravel pump group on weight, and electric motor power has reduced 33.9%.The carrying of this pump, installation, easy to operate, long service life, direct circulation pressure height, discharge capacity is big, and pump in when work if will change the medium circulation direction, as long as it is promptly convertible to open and close corresponding valve, need not shut down, so the raising work efficiency is remarkable.This vertical slurry pump is applicable in the foundation engineering rig punching construction and drives circulatory mediator and deslagging.

Below in conjunction with accompanying drawing embodiment, further specify structure characteristic of the present utility model and working principle.

Fig. 1 is described slurry pump and supporting pipelines structural representation;

Fig. 2 is an anti-reverse mechanism structural representation in the pump.

As described in Figure 1, the utility model has motor (8), slurry pump (1), threeway (9,13,16), valve (10,11,15,17) and pipeline form, slurry pump (1) is a vertical structure, on its suction port and output main line, be connected to threeway (16 respectively, 9) be divided into two branch lines, wherein a branch line separately is through serial connection valve (17,11) be connected to mud pit by suction line (18) and export pipeline (12) respectively after, separately another branch line is through serial connection valve (15,10) be merged into common line (14) by threeway (13) again after, be connected to drilling rod.

Fig. 2 has described the structure of anti-reverse mechanism, the impeller (2) of slurry pump (1) is with after the screw rod (3) of main shaft (7) lower end is connected, the axle sleeve (4) that is enclosed within on the main shaft (7) is provided with axially locating pin (4-1) on the end face of itself and impeller (2) handing-over, axle sleeve (4) is connected the location with impeller (2), other end in axle sleeve (4), the nut (6) that stopping shim (5) is arranged and be spun on the main shaft (7) is also tight with axle sleeve (4), thus main shaft (7) and impeller (2) are fused, broken because of impeller (2) loose or dislocation when preventing to reverse.

According to the description of Fig. 1, working principle of the present utility model is: during the normal circulation technology flow process; At first valve (11), (15) are closed, Open valve (17), (10), actuating motor, circulatory mediator is by mud pit → valve (17) → pump (1) → valve (10) → common line (14) → drilling rod → drill bit, be pressed at the bottom of the hole, return the aperture through drilling rod and hole wall annular gap again, flow back to mud pit, finish direct circulation.

During reverse circulation drilling; the slurry pump that is in the direct circulation working state needn't be shut down; as long as first throttle down (10), (17); Open valve (15), Open valve (11) again; mud promptly by drill bit → drilling rod → common line (14) → valve (15) → pump (1) → valve (11) → mud pit, is finished anti-circulation.

Claims

1, a kind of vertical slurry pump, there are motor (8), slurry pump (1), valve and pipeline to form, it is characterized in that: slurry pump (1) is a vertical structure, on its suction port and output main line, be connected to threeway (16,9) respectively and be divided into two branch lines, wherein a branch line separately is connected to the suction line (18) and the export pipeline (12) of circulatory mediator respectively behind serial connection valve (17,11), and separately another branch line is merged into common line (14) by threeway (13) again behind serial connection valve (15,10).

2, a kind of vertical slurry pump according to claim 1, it is characterized in that: the impeller (2) of slurry pump (1) is with after the screw rod (3) of main shaft (7) lower end is connected, the axle sleeve (4) that is enclosed within on the main shaft (7) is provided with axially locating pin (4-1) on the end face of itself and impeller (2) handing-over, axle sleeve (4) is connected the location with impeller (2), there is stopping shim (5) other end in axle sleeve (4) and is spun on nut (6) on the main shaft (7) with axle sleeve (4) and tight.