CN2425216Y

CN2425216Y - Sand pump

Info

Publication number: CN2425216Y
Application number: CN 00233509
Authority: CN
Inventors: 范基兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-05-31
Filing date: 2000-05-31
Publication date: 2001-03-28
Anticipated expiration: 2010-05-31

Abstract

The utility model discloses a sand pump for conveying mortar class mediums. A shaft of the sand pump is supported by front and back taper bearings, wherein, the front part of the shaft is connected with a belt pulley, the middle is provided with a fastening nut provided with inner threads for fixing the bearings the gap of which is adjusted, and the back part of the shaft is in turn provided with an inner sleeve, a spring compensator, a stationary ring and a moving ring; the back part of the shaft is fixed with an impeller through the inner threads and a fastening bolt, and the moving ring which has a mechanical seal action is tightly matched with the shaft to rotate in the same direction. The sand pump can convey the concentration of slurry by 60%-70%, and when the phenomenon of jumping and floating occurs to damage sealing leakage in operation due to enlarged gap between the bearings because of abrasion, the gap between the bearings can be adjusted and fixed by the fastening nut. The utility model has the advantages of small size, light weight, and long service life.

Description

A kind of sand pump

The utility model relates to a kind of sand pump, particularly relates to a kind of being mainly used in and carries mortar class medium, and it is that the oilfield drilling mud purifies one of necessary equipment.

The existing sand pump that uses because packing leaks, often needs to adjust and change parts, and maintenance load is very big, influences the working life of equipment, has increased operating cost again.

At above-mentioned situation, the purpose of this utility model is to provide a kind of like this sand pump that is used to carry mortar one class medium, and the gap of its bearing can be regulated, and except that mechanical seal, all the other are static seal, and this pump does not have leakage point, its entire equipment long service life.

For achieving the above object, the utility model has been taked following technical measures.

Its bearing by former and later two band taperings supports, the front portion of axle is connected with belt pulley by key, the middle part of axle is equipped with the band internal thread near the bearing place and is used for fixing tightening nut and the screw of adjusting the bearing play, the back outside of axle is equipped with interior cover successively, is loaded on spring tensioner in the stationary ring and the rotating ring that plays the mechanical seal effect, the back segment of axle is fixedlyed connected with impeller with clamping bolt by internal thread, spool, rotating ring and the equidirectional together rotation of impeller.

Major advantage of the present utility model is as follows:

1, adopt mechanical seal, material is a cemented carbide, has wear-resisting, impact resistance, long service life, leak free characteristics;

2, after sand pump used a stage, the bearing play increased, and axle occurs beating and play, causes seal leakage, can adjust bearing and fix by tightening nut, made its recovery normal state;

3, the pulp consistency of Shu Songing can reach 60%～70%, obvious energy conservation;

4, flow passage components are all selected the high hardness wear-resisting material for use, have prolonged the working life of equipment greatly;

5, its drive part both can adopt motor to drive sand pump by shaft joint, also can adopt the strap speed varying transmission, to satisfy the demand of different places, different operating modes.

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

Fig. 1 is the structural representation (bearing cap, sand pump support not shown) of the utility model sand pump;

Fig. 2 is A part partial enlarged drawing (bearing cap, sand pump support are shown) among Fig. 1;

Fig. 3 is the structural representation of tightening nut 4 among Fig. 1.

As shown in Figure 1, axle 3 supports by two bearings 2 that have tapering with span, the front portion of axle 3 connects with belt pulley 1 by key 13, the middle part of axle 3 is equipped with near bearing 2 places and is used for fixing tightening nut 4 and the screw 5 of adjusting bearing 2 gaps, the rear portion of axle 3 overlaps 6 in be equipped with successively its outside, spring tensioner 12, stationary ring 7 and the rotating ring 8 that plays the mechanical seal effect, the back segment of axle 3 is fixedlyed connected with impeller 9 with clamping bolt 10 by internal thread 11, make rotating ring 8, axle 3 and impeller 9 rotate together by direction shown in the arrow B, and described compensator 12 is loaded in the stationary ring 7.

As shown in Figure 2, bearing cap 14 and pump support 15 are stamped in the outside of the tightening nut 4 of axle 3 and outside thereof, are bearing chamber 16 between the two bearings, and the saturating window 17 of machine oil is housed in the shell of bearing chamber 16.

As shown in Figure 3, the external margin of tightening nut 4 has four spanner grooves 18 along circumference is equidistant, and between two adjacent spanner grooves 18, equidistantly has two screws 19.Nut 4 rotates by direction shown in the arrow C.

Claims

1. sand pump, mainly by belt pulley (1), bearing (2), axle (3), spring tensioner (12) and impeller (9) are formed, it is characterized in that: axle (3) is by bearing (2) supporting of two band taperings with span, the front portion of axle (3) connects with belt pulley (1) by key (13), the middle part of axle (3) is equipped with near bearing (2) and is used for fixing tightening nut (4) and the screw (5) of adjusting bearing (2) gap, interior cover (6) is equipped with at the rear portion of axle (3) successively in its outside, spring tensioner (12), stationary ring (7) and the rotating ring (8) that plays the mechanical seal effect, the back segment of axle (3) carries out fastening the connection by internal thread (11) and clamping bolt (10) with impeller (9), described rotating ring (8) merges and impeller (9) rotation with axle (3) close-fitting, and described spring tensioner (12) is loaded in the stationary ring (7).

2. sand pump as claimed in claim 1 is characterized in that: the external margin of tightening nut (4), have four spanner grooves (18) along circumference is equidistant, and between two spanner grooves (18) equidistant two screws (19) that have.