Pistachio Shelling Machine

Description of pistachio shelling machine:

The pistachio shelling machine is specially designed for removing the shells of pistachios. The pistachio shelling machine consists of an upper hopper, a raw material elevator, a sorting screen, shelling, and separation. The shelling gap is automatically adjusted according to the size of the material. The unshelled nuts can be recycled for shelling. The shells and nuts are discharged from different outlets. It can be widely used in small, medium, and large factories.

Technical information of pistachio shelling machine:

Advantages: 

Advanced screening and grading system
The pistachio shelling machine is equipped with a screening system consisting of primary, secondary, and tertiary vibrating screens that can perform screening and grading operations simultaneously. The mesh type of the screen surface is set between 6 - 10mm, which enables it to accurately screen the pistachios.

Complete shelling
The pistachio shelling machine has a shelling completeness rate of 96%. During the entire shelling process, almost all pistachios can maintain a high degree of integrity.

Equipment composition of pistachio shelling machine:

This pistachio cracking machine is composed of ① upper hopper, ② T-type elevator, ③ shelling, and sorting host, ④ electric control cabinet

How to maintain a pistachio shelling machine

External Cleaning
The exterior of the pistachio shelling machine needs to be cleaned regularly to prevent the accumulation of dust, debris, and pistachio shells. Wipe the surface of the machine with a soft dry cloth daily. This will not only keep the machine clean but also facilitate the timely detection of signs of wear or damage to the shell during the cleaning process, such as scratches, dents, etc. that may affect the structural integrity of the machine so that they can be dealt with promptly.

Internal Cleaning
The internal components of the pistachio shelling machine need to be cleaned more thoroughly regularly. Turn off the machine and disconnect the power supply after each use or at least once a week, depending on the frequency of use. Remove accessible parts such as hoppers, slides, conveyor belts, etc. that are prone to accumulate pistachio residues. Clean these parts with a mild detergent solution and a soft brush to remove attached pistachios or debris, then rinse thoroughly with clean water and dry completely before reinstalling to maintain the smooth operation of the machine's internal mechanisms and prevent blockages or jams.

Moving Parts Inspection and Lubrication
Inspect the moving parts of the pistachio shelling machine, such as rollers, shafts, bearings, gears, etc., weekly. Look for signs of wear, such as excessive friction marks, loose connections, or unusual noises during operation. If you hear a squeaking or grinding sound, it may mean that the bearings need lubrication or there is a misalignment of the parts. If the bearing wear rate exceeds 0.1mm per month, it needs to be replaced as soon as possible to avoid further damage to the machine. In addition, proper lubrication of moving parts is essential for smooth operation. Apply lubricant to bearings, shafts, and other moving parts at specified intervals. Generally, the bearings of pistachio shelling machines may need lubrication every 100-200 hours of operation. This will help reduce friction, thereby reducing wear on parts and extending their service life.

Examination of Cutting or Cracking Tools
The cutting or cracking tools used for shelling pistachios are critical parts of the machine and need to be inspected at least once a month. Look for signs of dullness, nicks, or breakage. If the tool is dull, it may not be able to shell effectively, resulting in damaged kernels or incomplete shelling. For example, if the tool's cutting edge is duller than 0.5mm, it is time to sharpen or replace the tool. The condition of the tool determines whether to sharpen or replace it. If the tool is only slightly dull, it can be sharpened using suitable sharpening equipment. If it is significantly chipped or broken, it must be replaced, and a spare tool should be prepared so that the machine can be quickly restored to operation after the worn tool is replaced.

Checking the Electrical System
Check the electrical system wiring of the pistachio shelling machine every few months. Check all wiring for signs of wear, cracking, or loose connections. Loose connections can cause arcing, which is both a safety hazard and causes the machine to operate intermittently. For example, if the wiring wear rate exceeds 1mm per year, it should be repaired or replaced immediately.
Check electrical components such as motors, switches, and relays. Watch for signs of overheating, such as discoloration of components or a burning smell. If the motor runs more than 10°C higher than normal (relative to the rated operating temperature), it may indicate a problem with the motor itself or the power supply. In this case, the motor may need to be repaired or replaced.

Calibration and Adjustment
Regularly check and adjust the shelling settings of the pistachio shelling machine to ensure consistent shelling quality. Depending on the size and variety of pistachios being processed, the shelling mechanism may need to be calibrated. If a new batch of pistachios is slightly different in size from the previous batch, the gap between the cutting or breaking tools may need to be adjusted to ensure optimal shelling without causing excessive kernel damage. Such adjustments are usually made through the control panel or adjustment knobs on the machine.
The machine's conveying and feed system also requires regular calibration and adjustment. Ensure that the pistachios are fed into the shelling mechanism at an even and correct rate. If the feed rate is too slow, it will reduce the machine's productivity; if it is too fast, it may cause blockages or incomplete shelling. The conveyor speed and feed chute settings need to be adjusted as needed to maintain a smooth flow of pistachios in the machine.

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