1、 Component wear and tear faults

1. Blade wear or breakage
   • reasonLong term crushing of hard PE pipes or mixing of metal impurities (such as sand, gravel, and iron filings) can cause blade breakage.
   • phenomenonThe crushing efficiency decreases, the particles are uneven, and even the machine gets stuck.
   • processRegularly check the degree of blade wear and replace it in a timely manner; Clean the hard impurities in the material before crushing.
2. Bearing damage
   • reasonInsufficient lubrication, poor bearing quality, or long-term overload operation.
   • phenomenonEquipment vibration intensifies, noise increases, and in severe cases, the spindle gets stuck.
   • processChoose high-quality bearings and regularly add lubricating grease (such as lithium based grease) to avoid long-term high load operation.
3. Loose or broken belt
   • reasonBelt aging, insufficient tension, or misalignment between motor and spindle.
   • phenomenonDecreased transmission efficiency, belt slippage or breakage.
   • processAdjust the belt tension, replace the aging belt, and ensure that the motor is aligned with the spindle.

2、 Improper operation fault

1. Feed too quickly or excessively
   • reasonOperators invest too many PE pipes at once in pursuit of efficiency.
   • phenomenonThe crushing chamber is blocked and the motor trips due to overload.
   • processControl the feeding speed, feed evenly, and avoid material accumulation.
2. The material humidity is too high
   • reasonThe surface of the PE pipe contains water or the interior absorbs moisture (such as recycled materials).
   • phenomenonThe material adheres to the blade or sieve, resulting in a decrease in crushing efficiency.
   • processPre dry wet materials or adjust crusher parameters (such as reducing speed).
3. Poor discharge
   • reasonScreen blockage or unreasonable design of discharge port.
   • phenomenonAfter crushing, the material accumulates at the discharge outlet, affecting continuous production.
   • processRegularly clean the screen mesh and optimize the discharge port structure (such as increasing the diameter or adopting a slope design).

3、 Design defect type fault

1. Unreasonable structure of the crushing chamber
   • reasonThe volume of the crushing chamber is too small or the meshing angle is not properly designed.
   • phenomenonMaterials are prone to getting stuck in the crushing chamber and require frequent shutdown for cleaning.
   • processImprove the structure of the crushing chamber (such as using a curved design) to increase the space for material passage.
2. Insufficient spindle strength
   • reasonImproper selection of spindle material or diameter, unable to withstand crushing force.
   • phenomenonThe spindle bends or breaks, causing the equipment to malfunction.
   • processChoose high-strength spindle materials (such as alloy steel) and increase the spindle diameter or wall thickness.

4、 Maintenance deficiency fault

1. Lubrication system malfunction
   • reasonInsufficient lubricating oil, deterioration, or blockage of lubrication pipelines.
   • phenomenonThe bearing temperature is too high, leading to increased equipment wear.
   • processRegularly check the amount and quality of lubricating oil, and clean the lubrication pipeline.
2. Electrical system malfunction
   • reasonMotor overload, circuit aging, or damage to control components.
   • phenomenonThe device suddenly shuts down or fails to start.
   • processInstall overload protection devices and regularly inspect electrical circuits and components.

5、 Other common faults

1. Abnormal vibration of equipment
   • reasonLoose anchor bolts, rotor imbalance, or component wear.
   • phenomenonThe overall vibration of the equipment increases the noise.
   • processTighten the anchor bolts, perform dynamic balance correction on the rotor, and replace worn parts.
2. Uneven discharge particle size
   • reasonBlade wear, screen damage, or improper rotation speed.
   • phenomenonThe particle size of the crushed material varies greatly.
   • processReplace worn blades or screens, and adjust the speed of the crusher.