CN105750809A - Repairing technique for impeller of circulating pump - Google Patents

Abstract

The invention discloses a repairing technique for an impeller of a circulating pump. The repairing technique includes the following requirements: (1) surface treatment: performing rough treatment on a part to be treated, and performing polishing or abrasive blasting with an angle grinder; and cleaning the surface after rough treatment, wherein the treated surface should be a roughened dry fresh base material surface; (2) preparation: generally preparing glue during construction, wherein the maximum glue amount cannot exceed 2 kilograms once; (3) coating: the coating thickness of the wear-resisting anticorrosive coating of a slurry circulating pump is 2-4mm, a part to be repaired is coated with the mixed material layer-by layer, a first layer should be compacted and then is fully soaked into the base material; (4) solidification: performing solidifying at the temperature of 25 DEG C for 24 hours, and then using the impeller, wherein heating or solidification time prolonging should be adopted to promote solidification if the temperature is less than 5 DEG C. The repairing technique is reasonable in processes, is low in cost, is reasonable and coordinated in parameter collocation, is short in time, and is simple in operation.

Description

A kind of renovation technique of circulating pump impeller

Technical field

The present invention relates to the renovation technique of a kind of circulating pump impeller.

Background technology

Slurry circulating pump, its impeller surface is worn, burn into cavitation erosion etc. destroys, and blade gradually wear down, pit burn into breach can even occur, and these pits and breach can slowly expand and cause structural destruction, ultimately results in wheel retirement；Also can seriously reduce the efficiency of pump simultaneously, the pit of impeller surface, the coarse resistance increased when flowing, blade breach can create substantial amounts of eddy current, flow reduction, consume energy, operating mode residing for serosity pump and severe, to two years impellers of general operation are accomplished by changing or repairing, the material of impeller is special, involve great expense, according to conventional repair mode-employing built-up welding, easily caused by explosion, today of energy-efficient society is built the whole people, improve circulating pump efficiency, save the existing very big economic benefit of maintenance cost and have again huge social meaning, the serum recycle impeller of pump of these these operations needs to place under repair in time and reducing energy consumption.And the recovery scenario of existing circulating pump impeller, and its procedure arrangement is unreasonable, operation is various, the time is long, can not meet requirement, it is necessary to improved to improve performance.

Summary of the invention

Because the drawbacks described above of prior art, the technical problem to be solved is to provide that a kind of operation is reasonable, simple to operate, the time is short, the renovation technique of the circulating pump impeller of low cost of manufacture.

For achieving the above object, the invention provides the renovation technique of a kind of circulating pump impeller, it is characterized in that, including following requirement:

(1) surface treatment: carry out roughening treatment to position need to be processed, the polishing of angle grinding machine or sandblasting etc.；The surface of roughening treatment is carried out；The surface processed should be the dry fresh substrate surface of alligatoring, and should without greasy dirt, without dust；

(2) preparation: be usually construction limit, limit and join glue, once join that glue amount is maximum not can exceed that 2 kilograms；

(3) coating: the coating layer thickness of slurry circulating pump wear-and corrosion-resistant coating is 2-4mm, the material mixed successively is coated on position to be repaired, and ground floor wants compacting, so as to fully infiltrate with base material, after coating is coated onto size, top layer wants equating whole, or applies coating surface with the wear-resisting glue of low viscosity；

(4) low 5 DEG C of temperature solidifies: 25 DEG C of solidifications can be come into operation for 24 hours, if should adopt heating or prolongation to promote to solidify hardening time；It is irradiated heating by the iodine-tungsten lamp distance from coating 40cm.

The invention has the beneficial effects as follows: operation of the present invention is reasonable, each parameter collocation reasonable coordination, the time is short, simple to operate, improves service life, and then the loss of the time of minimizing and cost, quick, economical with the reparation of this method circulating pump impeller, and effective.

Detailed description of the invention

Below in conjunction with embodiment, the invention will be further described:

The renovation technique of a kind of circulating pump impeller, is characterized in that, including following requirement:

(1) surface treatment: carry out roughening treatment to position need to be processed, the polishing of angle grinding machine or sandblasting etc.；The surface of roughening treatment is carried out；The surface processed should be the dry fresh substrate surface of alligatoring, and should without greasy dirt, without dust；

(2) preparation: be usually construction limit, limit and join glue, once join that glue amount is maximum not can exceed that 2 kilograms；

(3) coating: the coating layer thickness of slurry circulating pump wear-and corrosion-resistant coating is 2-4mm, the material mixed successively is coated on position to be repaired, and ground floor wants compacting, so as to fully infiltrate with base material, after coating is coated onto size, top layer wants equating whole, or applies coating surface with the wear-resisting glue of low viscosity；

(4) low 5 DEG C of temperature solidifies: 25 DEG C of solidifications can be come into operation for 24 hours, if should adopt heating or prolongation to promote to solidify hardening time；It is irradiated heating by the iodine-tungsten lamp distance from coating 40cm.

The preferred embodiment of the present invention described in detail above.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to the design of the present invention without creative work.All technical staff in the art, all should in the protection domain being defined in the patent claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.

Claims (1)

1. a renovation technique for circulating pump impeller, is characterized in that, including following requirement:

(1) surface treatment: carry out roughening treatment to position need to be processed, the polishing of angle grinding machine or sandblasting etc.；The surface of roughening treatment is carried out；The surface processed should be the dry fresh substrate surface of alligatoring, and should without greasy dirt, without dust；

(2) preparation: be usually construction limit, limit and join glue, once join that glue amount is maximum not can exceed that 2 kilograms；

(3) coating: the coating layer thickness of slurry circulating pump wear-and corrosion-resistant coating is 2-4mm, the material mixed successively is coated on position to be repaired, and ground floor wants compacting, so as to fully infiltrate with base material, after coating is coated onto size, top layer wants equating whole, or applies coating surface with the wear-resisting glue of low viscosity；

(4) low 5 DEG C of temperature solidifies: 25 DEG C of solidifications can be come into operation for 24 hours, if should adopt heating or prolongation to promote to solidify hardening time；It is irradiated heating by the iodine-tungsten lamp distance from coating 40cm.