CN2282082Y

CN2282082Y - Adjustable screw pump lining

Info

Publication number: CN2282082Y
Application number: CN 96208341
Authority: CN
Inventors: 陈志民
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-09
Filing date: 1996-04-09
Publication date: 1998-05-20
Anticipated expiration: 2006-04-09

Abstract

The utility model relates to an adjustable screw pump lining. The adjustable screw pump lining is composed of an outer lining (1), an inner lining (2), an isolation layer (3), a tile block (4), an adjustable screw (5), a pressure pouring sealed body (6), etc. The isolation layer (3) is arranged between the inner lining and the outer lining. The tile block (4) is arranged in the isolation layer (3), and the tile block (4) and the adjustable screw (5) fixed on the outer lining are mutually connected. After the inner lining is abraded, the tile block is abutted and pressed by the adjustable screw (5) on the outer lining, and the inner lining is contracted. Filling agent is pressed into the isolation layer (3) by the pressure pouring sealed body (6), the inner lining and a screw are kept engagement, and the purpose of double adjustment is achieved. The adjustable screw pump lining has compact structure, a flexible adjustable mode, long service life, and high reliability. The adjustable screw pump lining can be widely used for the adjustment of a screw pump and other pump linings after the screw pump and the other pump linings are abraded.

Description

Adjustable screw pump lining

The utility model belongs to the screw pump controlling device, particularly a kind of screw pump lining with dual adjustable function.

In the prior art, the disclosed a kind of screw pumps of using of Chinese patent application CN94222588.0 with sand control function more, its screw rod lining is made by the General Purpose Rubber material, after overcoming sand grains wearing and tearing neck bush, be difficult for regulating this problem, thereby in the intake chamber in the pump housing filtrating equipment is housed, to alleviate the wearing and tearing of neck bush." Worldpumps " 1984 2 phases are the screw pump lining controlling device of the Nai Ci company of open report in the page or leaf P.59, and it adopts double button screw squeeze adjustments, and neck bush and screw rod are meshed by force.In addition, the disclosed a kind of helical rotor pump of Chinese patent application CN88105528.X, its stator liner is made with rubber material, and axial adjustable structure is adopted in the engagement of stator liner and rotor screw rod.Though they are having some improvement aspect the lining adjusting of screw pump, but still have the following disadvantages:

(1) increase filtrating equipment in the pump housing, though can improve the working life of lining, structure is comparatively complicated, and the cost height has increased difficulty of processing, has directly influenced the suction of pump intake, and regulates difficulty after the liner wear;

(2) adopt axial adjustable structure, though can play regulating action to the engagement of screw and bushing, structure is comparatively complicated, and also very inconvenience of the adjusting after the neck bush wearing and tearing;

(3) adopt double button screw squeeze adjustments, though can reach regulating action, regulative mode is single, poor reliability.After the screw adjusted, the gap between tile fragment and the external bushing increases gradually, screw rod in the neck bush pivoting friction, the easy rubbing of tile fragment, gasket end is damaged easily.

More than several regulation schemes be single regulative mode, heat-transfer effect is poor, and neck bush is difficult to accomplish even contraction, these defectives have reduced the regulating effect of lining to a certain extent.

The purpose of this utility model provides a kind of dual adjustable screw pump lining, prolongs the working life of lining, reduces operating cost, improves the reliability and the easy-maintenance of regulating.

Above-mentioned purpose is realized by following scheme: adjustable screw pump lining, form by external bushing (1), neck bush (2), separation layer (3), tile fragment (4), adjusting screw (5), pressure injection seal (6) etc., there are the two end part of a separation layer (3), neck bush (2) to embed in the two end part of external bushing (1) between external bushing (1) and the neck bush (2), the bulking agent that is pressed into through pressure injection seal (6) is sealed.Pressure injection seal (6), adjusting screw (5) are fixed on the external bushing (1), and pressure injection seal (6) communicates with separation layer (3).Tile fragment (4) places the separation layer (3) between the inside and outside lining, and tile fragment (4) is evenly distributed along the lining axial direction.Tile fragment (4) and the mutual corresponding linking of the adjusting screw (5) on the external bushing (1).After neck bush (2) wearing and tearing,, make neck bush (2) radial contraction by being fixed on adjusting screw (5) the roof pressure tile fragment (4) on the external bushing (1).In separation layer (3), be pressed into bulking agent by the pressure injection seal (6) that is fixed on the external bushing (1) again, the bulking agent that is pressed into is full of the space between tile fragment (4) and the neck bush (2), behind tile fragment (4) and separation layer (3) uniform-compression, because the effect of pressure, neck bush (2) evenly shrinks and is close to screw rod, make neck bush (2) keep engagement with screw pump all the time, thereby reach the purpose of dual regulation.

The advantage of this programme is: can select different regulative modes according to the degree of wear of neck bush.When neck bush (2) wearing and tearing hour, can select to be pressed into regulative mode or the screw adjusted mode of filling respectively.When neck bush (2) serious wear, can at first utilize adjusting screw (5) that tile fragment (4) is carried out precompressed, in separation layer (3), be pressed into bulking agent by pressure injection seal (6) again and regulate, can prevent the rubbing of tile fragment (4), improve the reliability of regulating, and then reach the purpose of dual regulation.This programme is the extension of inventor on former patent (CN94229925.6) scheme basis.The dual regulation mode can make improve more than 5～6 times the working life of screw pump lining.

Further specify scheme of the present utility model in conjunction with the accompanying drawings:

Accompanying drawing is a structure cut-away view of the present utility model.

External bushing (1) is the rigid body of uniform wall thickness, and available metal or nonmetallic composite are made.Neck bush (2) is the rubber or the composite elastic body of uniform wall thickness or non-homogeneous wall thickness, and available rubber or composite elastic material are made.Tile fragment (4) available metal or nonmetallic composite are made, and tile fragment (4) is rectangle or the helical structure identical with the neck bush shape.After being to be pressed into, the bulking agent that separation layer (3) is pressed into to solidify or the mobile medium of non-curing by pressure injection seal (6), curable bulking agent best results, it can make tile fragment (4) position in the separation layer (3) be completely fixed, the heat in the time of transmitting neck bush (2) wearing and tearing effectively.

Compared with prior art, the utility model compact conformation, regulative mode is flexible, reliability height, lining Long service life can be widely used in the adjusting after screw pump and other pump block wear and tear.

Claims

1. adjustable screw pump lining is made up of external bushing (1), neck bush (2), separation layer (3), tile fragment (4), adjusting screw (5), pressure injection seal (6) etc., it is characterized in that:

A) pressure injection seal (6), adjusting screw (5) are fixed on the external bushing (1);

B) between external bushing (1) and the neck bush (2) separation layer (3) is arranged, tile fragment (4) places separation layer (3), tile fragment (4) and the mutual corresponding linking of the adjusting screw (5) on the external bushing (1);

C) pressure injection seal (6) communicates with separation layer (3);

D) two end part of neck bush (2) embed in the two end part of external bushing (1), and bulking agent is sealed.

2. adjustable screw pump lining according to claim 1 is characterized in that tile fragment (4) and neck bush (2) fit fully, tile fragment (4) be rectangle or with the identical helical structure of neck bush (2) shape.

3. adjustable screw pump lining according to claim 1 is characterized in that external bushing (1) is the metal of even wall or nonmetal compound rigid body, and neck bush (2) is the rubber or the composite elastic body of uniform wall thickness or non-homogeneous wall thickness.

4. adjustable screw pump lining according to claim 1 is characterized in that being solidified after the bulking agent that separation layer (3) is pressed into is to be pressed into or the mobile medium of non-curing by pressure injection seal (6).