CN115228560A - Maintenance method of crusher impeller - Google Patents

Abstract

A maintenance method of a crusher impeller; when the wear degree of the wear-resistant block alloy cutter head reaches 90 percent or the middle thickness of the wear-resistant block is 3-5mm, the matched wear-resistant block is replaced; if the material sliding plate is abraded to the top of the bolt to affect the disassembly, or the next shift of operation cannot be completed, or the material sliding plate is cracked, the matched material sliding plate is replaced; if the thickness of the inner surface of the runner lining plate or the thickness of the discharge port is less than 3mm, the matched upper runner lining plate and the lower runner lining plate are replaced; repairing the upper disc and the lower disc of the impeller to the original size, welding wear-resistant welding layers on the outer edge of the upper disc of the impeller, the outer edge of the lower disc, the upper side and the lower side of the upper disc and the upper side and the lower side of the lower disc, and performing a dynamic balance experiment on a balancing machine; on one hand, the wear-resistant block is fully utilized, resources are saved, on the other hand, the wear-resistant block seat can be effectively prevented from being worn, the stability of the impeller in high-speed operation can be guaranteed, and the problem that the bearing is damaged too early due to equipment vibration caused by unstable operation of the impeller is avoided.

Description

Maintenance method of crusher impeller

Technical Field

The invention relates to the technical field of crusher impellers, in particular to a maintenance method of a crusher impeller.

Background

The impeller is a core component of the crusher and also a main abrasion component of the crusher, and the abrasion component is regularly maintained, so that the service life of the impeller can be prolonged, and the crushing efficiency of the impeller can be improved; if the impeller wearing part is not replaced in time, the impeller body is possibly seriously worn or completely damaged, the maintenance of the impeller is generally performed by technicians through experience at present, the problems of untimely maintenance, irregular maintenance operation and the like can exist in the time length, the abrasion of key components such as a wear block seat, a main shaft and the like can be easily caused in a short time after the crusher works, even the damage of a driving motor can be caused, and great economic loss is caused for enterprises.

In view of the above, a method of servicing a crusher impeller has been developed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a method for maintaining an impeller of a crusher, wherein the abrasion-resistant block is replaced when the middle thickness of the abrasion-resistant block is 3-5mm or the abrasion degree of an alloy cutter head reaches 90%, on one hand, the abrasion-resistant block is fully utilized, resources are saved, on the other hand, the abrasion of an abrasion-resistant block seat can be effectively avoided, through a dynamic balance experiment after the impeller is repaired, the stability of the impeller during high-speed operation can be ensured, the problems that equipment is vibrated due to the unstable operation of the impeller and a bearing is prematurely damaged are prevented, and the problem that the abrasion of key components such as the abrasion-resistant block seat and a main shaft is easily caused, even the bearing is prematurely damaged, a motor is damaged, and great economic loss is caused to an enterprise due to the nonstandard maintenance operation of the impeller at present are effectively solved.

In order to achieve the purpose, the invention adopts the following technical scheme: a maintenance method of a crusher impeller is characterized in that: the method comprises the following steps of replacing a wear-resistant block → replacing a material sliding plate → replacing an upper runner lining plate and a lower runner lining plate → repairing an impeller → performing dynamic balance experiment → installing the impeller, wherein the specific steps of the maintenance method are as follows:

the first step is as follows: replacing the wear-resistant block: observing the wear-resistant blocks through the access hole, and if the wear degree of the alloy tool bit of each wear-resistant block reaches 90% or the middle thickness of each wear-resistant block is 3-5mm, replacing the matched wear-resistant blocks through the access hole, wherein the weight error between every two sets of wear-resistant blocks is less than 30g;

the second step: replacing a material sliding plate: observing the material sliding plate through the access opening, if the material sliding plate is abraded to the top of the bolt to influence the disassembly, or the next operation can not be finished, or the material sliding plate is cracked, replacing the matched material sliding plate through the access opening, wherein the weight error among each set of material sliding plates is less than 50g;

the third step: replacing the upper runner lining plate and the lower runner lining plate; observing the upper flow guide lining plate and the lower flow guide lining plate, and if the thickness of the inner surface of the runner lining plate or the thickness of the discharge port is less than 3mm, replacing the matched upper runner lining plate and lower runner lining plate, wherein the weight error between every two sets is less than 100g;

the third step: repairing the impeller: removing the impeller, removing accumulated materials of the impeller, repairing an upper disk and a lower disk of the impeller to the original size, and welding wear-resistant welding layers with the thickness of 3-5mm on the outer edge of the upper disk of the impeller, the outer edge of the lower disk, the upper side surface and the lower side surface of the upper disk, and the upper side surface and the lower side surface of the lower disk;

the fourth step: dynamic balance experiment: the shaft heads at two ends of the impeller are arranged on front and rear clamping devices of the balancing machine for action balancing experiments, balancing weights are added to the impeller through experimental data, and the impeller is integrally in an optimal balance state through repeated experiments;

the fifth step: installing an impeller: the impeller is mounted into the crusher.

The specific steps of installing the impeller are as follows:

(1) cleaning the main shaft, the impeller taper sleeve, the impeller taper hole and the key;

(2) checking the matching condition of the impeller taper hole and the taper sleeve: screwing the two screw holes on the large end face of the taper sleeve by using bolts, coating the color on the surface of the impeller taper sleeve in the length direction, inserting the taper sleeve into the impeller taper hole to make the taper sleeve contact with the impeller taper hole, rotating the taper sleeve for a circle, taking out the taper sleeve to observe color traces on the taper sleeve, and finishing the impeller taper hole if the traces cover the length of less than 80% of the circumference;

(3) and expanding the taper sleeve of the impeller by using a wedge-shaped tool or a screwdriver, downwards installing the large end of the taper sleeve on the main shaft, and enabling the taper sleeve to tightly press the labyrinth cover. Taking down the wedge-shaped tool or the screwdriver, and removing burrs on the taper sleeve;

(4) the impeller is hung into the equipment and is arranged on the impeller taper sleeve, so that the impeller is compacted on the taper sleeve, and the upper side surface of the taper sleeve is at least 2mm lower than the upper side surface of the impeller hub;

(5) the impeller body and the impeller cone sleeve are tightly matched by a central screw of the cloth cone, and enough friction force exists between the impeller body and the impeller cone sleeve.

The invention has the beneficial effects that: according to the invention, the wear-resisting blocks are replaced when the thickness of the middle of the wear-resisting block is 3-5mm or the wear degree of the alloy cutter head reaches 90%, on one hand, the wear-resisting blocks are fully utilized, resources are saved, on the other hand, the wear-resisting block seat can be effectively prevented from being worn, through a dynamic balance experiment after the impeller is repaired, the stability of the impeller in high-speed operation can be ensured, the problem that equipment vibration is caused due to the unstable operation of the impeller and the bearing is prematurely damaged is prevented, and the problems that the existing maintenance operation of the impeller is not standard, the wear-resisting block seat, the main shaft and other key components are easily worn, and even the bearing is prematurely damaged, the motor is damaged, and great economic loss is caused to enterprises are effectively solved.

Detailed Description

The present invention will be described in further detail with reference to specific embodiments below:

example 1:

a maintenance method of a crusher impeller is characterized in that: the method comprises the following steps of replacing a wear-resistant block → replacing a material sliding plate → replacing an upper runner lining plate and a lower runner lining plate → repairing an impeller → performing dynamic balance experiment → installing the impeller, wherein the specific steps of the maintenance method are as follows:

the first step is as follows: replacing the wear-resistant block: observing the wear-resistant blocks through the access hole, and replacing the matched wear-resistant blocks through the access hole when the wear degree of the alloy tool bit of the wear-resistant blocks reaches 90% or the middle thickness of the wear-resistant blocks is 3-5mm, wherein the weight error between every two sets of wear-resistant blocks is less than 30g;

the second step: replacing a material sliding plate: observing the material sliding plate through the access opening, if the material sliding plate is abraded to the top of the bolt to influence the disassembly, or the next operation can not be finished, or the material sliding plate is cracked, replacing the matched material sliding plate through the access opening, wherein the weight error among each set of material sliding plates is less than 50g;

the third step: replacing the upper runner lining plate and the lower runner lining plate; observing the upper flow guide lining plate and the lower flow guide lining plate, and if the thickness of the inner surface of the runner lining plate or the thickness of the discharge port is less than 3mm, replacing the matched upper runner lining plate and lower runner lining plate, wherein the weight error between every two sets is less than 100g;

the third step: repairing the impeller: detaching the impeller, removing accumulated materials of the impeller, repairing an upper disc and a lower disc of the impeller to the original size, and welding wear-resistant welding layers with the thickness of 3-5mm on the outer edge of the upper disc, the outer edge of the lower disc, the upper side surface and the lower side surface of the upper disc, and the upper side surface and the lower side surface of the lower disc of the impeller;

the fourth step: dynamic balance experiment: the shaft heads at two ends of the impeller are arranged on front and rear clamping devices of the balancing machine for action balancing experiments, balancing weights are added to the impeller through experimental data, and the impeller is integrally in an optimal balance state through repeated experiments;

the fifth step: installing an impeller: the impeller is mounted into the crusher.

Example 2:

the steps of installing the impeller are as follows:

(1) cleaning the main shaft, the impeller taper sleeve, the impeller taper hole and the key;

(2) checking the matching condition of the impeller taper hole and the taper sleeve: screwing a bolt into two screw holes on the large end face of the taper sleeve, coating the color on the surface of the impeller taper sleeve in the length direction, inserting the taper sleeve into the impeller taper hole to make the taper sleeve contact with the impeller taper hole, rotating the taper sleeve for a circle, taking out the taper sleeve to observe a color trace on the taper sleeve, and finishing the impeller taper hole if the trace covers less than 80% of the circumference;

(3) and a wedge-shaped tool or a screwdriver is used for expanding the taper sleeve of the impeller, the large end of the taper sleeve is downwards arranged on the main shaft, and the taper sleeve is tightly pressed on the labyrinth cover. Taking down the wedge-shaped tool or the screwdriver, and removing burrs on the taper sleeve;

(4) the impeller is hung into the equipment and is arranged on the impeller taper sleeve, so that the impeller is compacted on the taper sleeve, and the upper side surface of the taper sleeve is at least 2mm lower than the upper side surface of the impeller hub;

(5) the impeller body and the impeller taper sleeve are tightly pressed by a central screw of the distribution taper, so that the impeller body and the impeller taper sleeve are tightly matched, and sufficient friction force exists between the impeller body and the impeller taper sleeve.

Claims (2)

1. A method of maintaining a crusher impeller, comprising: the method comprises the following steps of replacing a wear-resistant block → replacing a material sliding plate → replacing an upper runner lining plate and a lower runner lining plate → repairing an impeller → performing dynamic balance experiment → installing the impeller, wherein the specific steps of the maintenance method are as follows:

the first step is as follows: replacing the wear-resistant block: observing the wear-resistant blocks through the access hole, and if the wear degree of the alloy tool bit of each wear-resistant block reaches 90% or the middle thickness of each wear-resistant block is 3-5mm, replacing the matched wear-resistant blocks through the access hole, wherein the weight error between every two sets of wear-resistant blocks is less than 30g;

the second step is that: replacing a material sliding plate: observing the material sliding plate through the access opening, if the material sliding plate is abraded to the top of the bolt to influence the disassembly, or the next operation can not be finished, or the material sliding plate is cracked, replacing the matched material sliding plate through the access opening, wherein the weight error among each set of material sliding plates is less than 50g;

the third step: replacing the upper runner lining plate and the lower runner lining plate; observing the upper flow guide lining plate and the lower flow guide lining plate, and if the thickness of the inner surface of the flow channel lining plate or the thickness of the discharge port is less than 3mm, replacing the matched upper flow channel lining plate and lower flow channel lining plate, wherein the weight error between each set is less than 100g;

the third step: repairing the impeller: detaching the impeller, removing accumulated materials of the impeller, repairing an upper disc and a lower disc of the impeller to the original size, and welding wear-resistant welding layers with the thickness of 3-5mm on the outer edge of the upper disc, the outer edge of the lower disc, the upper side surface and the lower side surface of the upper disc, and the upper side surface and the lower side surface of the lower disc of the impeller;

the fourth step: dynamic balance experiment: the shaft heads at two ends of the impeller are arranged on front and rear clamping devices of the balancing machine for action balancing experiments, balancing weights are added to the impeller through experimental data, and the impeller is integrally in an optimal balance state through repeated experiments;

the fifth step: installing an impeller: the impeller is mounted into the crusher.

2. A method of servicing a crusher impeller as claimed in claim 1, wherein: the steps of installing the impeller are as follows:

(1) cleaning the main shaft, the impeller taper sleeve, the impeller taper hole and the key;

(2) checking the matching condition of the impeller taper hole and the taper sleeve: screwing the two screw holes on the large end face of the taper sleeve by using bolts, coating the color on the surface of the impeller taper sleeve in the length direction, inserting the taper sleeve into the impeller taper hole to make the taper sleeve contact with the impeller taper hole, rotating the taper sleeve for a circle, taking out the taper sleeve to observe color traces on the taper sleeve, and finishing the impeller taper hole if the traces cover the length of less than 80% of the circumference;

(3) and expanding the taper sleeve of the impeller by using a wedge-shaped tool or a screwdriver, downwards installing the large end of the taper sleeve on the main shaft, and enabling the taper sleeve to tightly press the labyrinth cover. Taking down the wedge-shaped tool or the screwdriver, and cleaning burrs on the taper sleeve;

(4) the impeller is hung into the equipment and is arranged on the impeller taper sleeve, so that the impeller is compacted on the taper sleeve, and the upper side surface of the taper sleeve is at least 2mm lower than the upper side surface of the impeller hub;

(5) the impeller body and the impeller cone sleeve are tightly matched by a central screw of the cloth cone, and enough friction force exists between the impeller body and the impeller cone sleeve.