Absolutely. A complete aggregate plant typically utilizes a Jaw Crusher for primary breaking, an Impact/Cone Crusher for secondary reduction, and our stone crusher sand making machine (VSI) as the final shaping and sand production unit.

Yes! We manufacture track-mounted and wheel-mounted mobile sand making machine units. These mobile platforms integrate the VSI crusher, vibrating screens, and return conveyors on a single chassis for maximum portability.

Coarsening of the particle size is usually due to a decrease in impeller speed or wear of the liner. Solution: First, check the tension of the drive V-belt to ensure there is no slippage; second, measure the actual impeller speed and adjust the motor frequency converter to the rated value (generally 2000–2600 r/min); finally, replace the excessively worn liners and impact blocks to restore the crushing gap.

The product particle size distribution depends on factors such as feed characteristics, impeller rotational speed, material particle density within the vortex crushing chamber, and the ratio of overflow (waterfall) feed to rotor feed. The more brittle the material and the higher the impeller speed, the greater the proportion of fine-grained product. Within certain limits, increasing the overflow feed rate reduces the percentage of fines in the product, although the absolute quantity of fines increases. Impeller diameter is related to the crusher's processing capacity and the maximum feed particle size. Since the factors affecting processing capacity are numerous and complex, the impeller diameter is determined based on the maximum feed particle size; generally, a larger feed size requires a larger impeller diameter, and vice versa.

The impact-type sand-making machine should be installed on a concrete or steel structure foundation capable of supporting four times the total weight of the machine. When installed indoors, a concrete foundation is preferred over a support frame to minimize the machine's overall height and save installation space; for outdoor installations, a taller steel support frame may be used to elevate the machine, facilitating the layout of the discharge system. During installation, the machine must be leveled so that the main shaft stands perpendicular to the horizontal plane. Lifting equipment should be installed above the crusher, with a lifting capacity rated for the weight of the heaviest component; adequate clearance for lifting operations and sufficient space on one side of the machine for maintenance access must be provided. Before installation, verify all items against the packing list, checking for any transit damage and ensuring the completeness of all parts and spares. Machine Adjustment Before leaving the factory, the crusher undergoes an 8-hour test run to ensure all components function correctly. Nevertheless, after on-site installation and positioning, a comprehensive inspection and test run must still be performed according to requirements, covering the following items: 1) Check the reliability of lubrication line connections; replenish lubricant before the test run using No. 3 lithium-based grease or molybdenum disulfide (MoS₂) grease. 2) Inspect all fasteners to ensure they are secure and reliable; carefully check the impeller for foreign objects and remove any found immediately. 3) Verify correct motor wiring and normal voltage levels (standard voltage is 380V). 4) Before installing the drive belts, "jog" the motor to check the rotation direction; it must match the direction indicated on the crusher's nameplate (i.e., the impeller rotates counter-clockwise when viewed from the feed inlet). If the direction is reversed, adjust the motor wiring to align with the nameplate indication. 5) For dual-motor drive systems, the main shaft assembly is connected to motors on both sides using an equal number of V-belts; the tension of the V-belts on both sides must be adjusted to be equal and properly aligned. Following a satisfactory inspection, and prior to handover for production, no-load and load test runs must be conducted; the equipment may only be handed over to the production department after successfully passing these tests.

Requirements for the no-load trial run are as follows: (1) The duration of the no-load trial run shall be 4 hours; (2) Before the trial run, rotate the pulley by hand; it should turn smoothly and flexibly; (3) After startup, the crusher should operate steadily without violent vibration or abnormal noise; otherwise, stop the machine for inspection and rectification before attempting the trial run again until normal operation is achieved; (4) During the trial run, the temperature rise of the bearings must not exceed 45°C, and the maximum temperature must not exceed 75°C; otherwise, stop the machine to clean the bearings and adjust the clearance. Requirements for the load trial run are as follows: (1) The load trial run must be conducted only after the no-load trial run has been successfully completed; (2) The duration of the load trial run shall be 8 to 24 hours; (3) Before startup, material with a particle size of no more than 25mm must be piled up inside the vortex crushing chamber until the material flows naturally to form an ore bed; the piled material should be the same type as the material to be crushed; (4) The feed particle size must strictly comply with the range specified in the crusher's technical parameter table; feeding material larger than the specified size is strictly prohibited; (5) Feeding must be uniform and continuous, increasing the feed rate until the impact sand-making machine reaches full load; (6) The temperature rise of the bearings must not exceed 45°C, and the maximum temperature must not exceed 75°C; if these limits are exceeded, stop the machine immediately, identify the cause of the issue, rectify it, and then resume the trial run until the requirements are met.

The operating procedures are as follows: (1) Before startup, check the vortex crushing chamber through the inspection port to ensure an ore bed exists. If not, feed material with a particle size of no more than 25mm into the chamber until the material flows naturally, thereby forming an ore bed. (2) Check the impeller's direction of rotation; viewed from the feed inlet, the impeller should rotate counter-clockwise. If it rotates in the opposite direction, adjust the motor wiring. (3) The startup sequence for the crusher and material conveying equipment is as follows: discharge belt conveyor → vertical shaft impact crusher → feed belt conveyor. The crusher must be started under no-load conditions, and material feeding should only begin after the crusher is operating normally. (4) Feed material strictly according to the specified particle size limits for each model. Material exceeding the specified size is strictly prohibited from entering the crusher; doing so can cause impeller imbalance and excessive wear, or even clog the impeller flow channels and central feed pipe, preventing normal operation. Large pieces of material must be removed promptly if discovered. (5) If the discharge belt conveyor stops running, material feeding must cease immediately; therefore, the discharge belt conveyor should be interlocked with the feeding system for startup and shutdown. Failure to do so could jam the impeller and burn out the motor. (6) Material feeding should be uniform and continuous. (7) During operation, the crusher must not exhibit severe vibration or abnormal noise; if these occur, stop the machine immediately for inspection and troubleshoot the issue before restarting in the correct sequence. (8) During operation, all inspection doors must be tightly sealed, and the belt guard must be properly installed. Daily Maintenance and Safety Procedures The details regarding daily maintenance and safety procedures are as follows: (1) Periodically shut down the machine and open the inspection doors to check the wear on internal components—specifically the wear-resistant lining rings, liner plates, impeller flow channel liners, peripheral expansion plates, and wear blocks. Worn parts should be repaired or replaced promptly. Wear blocks must be replaced as a complete set to ensure the impeller remains balanced during operation. If wear on the impeller body is detected, it should be replaced promptly or sent to the manufacturer for repair. (2) Opening the inspection port to observe internal operations while the crusher is running is strictly prohibited to avoid danger. (3) Use No. 3 lithium-based grease or molybdenum disulfide (MoS₂) grease; fill the bearing cavity to one-third to one-half of its capacity. Add an appropriate amount of grease after 400 hours of operation. Dismantle the main shaft assembly to clean the bearings after 2,000 hours of operation, and replace the bearings after 7,200 to 10,000 hours of operation. The upper bearing of the main shaft assembly serves as the floating end, while the lower bearing serves as the fixed end; after assembly, the pulley should rotate freely when turned by hand. (4) Adjust the tension of the V-belts properly to ensure even load distribution. When using a dual-motor drive, match the V-belts into sets so that the lengths within each set are as uniform as possible; adjust the system so that the current difference between the two motors does not exceed 15 A.