To ensure the efficient production of the sand making machine, we also need to pay attention to: 1. The sand making machine should be suspended regularly to prolong its service life; the machine should be shut down regularly to check the wear condition inside the machine, especially the center feeding pipe, cone cap, impeller upper and lower flow channel lining plate, circumferential guard plate, wear-resistant block, etc. The wear degree of the wearing parts should be replaced or repaired in time, especially to ensure the timely replacement of the wearing parts. At the same time, pay attention to the weight, model, size, etc. of the replacement parts must be replaced according to the original parts parameters. 2. As we all know, the shaft of the sand making equipment bears the full load of the machine. Regular lubrication directly affects the service life and operating speed of the equipment. Therefore, regular lubrication is required, and the injected lubricating oil must be clean and the seal must be good, and the instructions must be strictly followed. standard for lubricating oil. When the sand making machine runs for 400 hours, an appropriate amount of lubricant should be added. When the sand making machine runs for 2,000 hours, the necessary cleaning work should be performed on the bearings. After running for 7,200 hours, new bearings must be replaced to ensure the normal operation of the equipment. The staff should also always pay attention to whether the various parts of the equipment are working normally. When the bearing oil temperature rises and there is a huge impact sound, they should immediately stop to check the cause and eliminate it. 3. The sand making machine is a high-speed operation equipment. Therefore, during the operation of the equipment, the staff should pay special attention to personal safety, stay away from the equipment, and must not open it for observation to avoid the occurrence of dangerous accidents. If the machine needs to be repaired, it must be operated after the power is turned off. 4. When a serious failure occurs, it is recommended to ask professional maintenance personnel to repair it. Do not disassemble the core components without permission from the manufacturer. 5. Maintenance of impeller. The impeller is one of the important parts of the sand making machine, and it is also the most vulnerable part. Protecting the impeller and improving its stability can not only effectively improve the working efficiency of the sand making machine, but also prolong the service life of the sand making machine. The rotation direction of the impeller device should be counterclockwise as viewed from the feed port, otherwise the motor wiring position should be adjusted; the feeding should be uniform and continuous, and the size of the river pebbles should be strictly in accordance with the equipment regulations. Unbalance, wear the impeller; stop feeding first when the machine is stopped, otherwise it will cause the impeller to be crushed and damage the impeller; it is also necessary to regularly check the wear of the impeller device, and replace the worn impeller in time to ensure the normal operation of the production. 6. Maintenance of the rotor. There are several effective ways to extend the life of the rotor bearing of the sand making machine: Correct selection of the model of the rotor bearing: Because the double row radial spherical roller bearing has the advantages of strong bearing capacity and good self-aligning performance, this type of bearing is mostly used as the rotor bearing. Improve the balance accuracy of the rotor body: The rotor of the sand making machine has a large mass and a high rotation speed. The casting deviation of the rotor body and the quality deviation caused by the installation of the plate hammer will cause unbalanced centrifugal force when the rotor rotates. This centrifugal force causes the machine to vibrate forcibly, resulting in the destruction of bearings and other parts, so the rotor of the crusher must be balanced. Choose a reasonable matching relationship: The rotor bearing of the sand making machine is mainly subjected to impact load when it is working, and the magnitude of the load on the rolling element is different. The raceway is also subjected to the greatest force when it is in contact with the rolling elements. It is recommended to use F8 or E8 for the cooperation between the outer ring and the bearing seat. Improve the bearing condition: The impact load acting on the bearing depends on the support flexibility of the impulse bearing seat acting on the rotor. Increasing the support compliance of the housing will reduce shock loads acting on the bearing. To this end, we add a rubber plate of appropriate thickness between the bearing seat and the support frame to improve the support flexibility of the bearing seat. Due to the addition of the rubber plate, the support flexibility is increased, so as to absorb a part of the vibration energy, improve the bearing force condition, and achieve the purpose of prolonging the service life.
1. Before the sand making machine is installed, check according to the packing list to check whether all parts are complete and whether there is any damage during transportation. 2. The sand making machine must be installed on a solid concrete foundation. The foundation should be able to withstand 4 times the weight of the whole machine and be fixed with anchor bolts. 3. During installation, the sand making machine should be placed horizontally so that its main shaft is vertical to the horizontal plane. 4. After installation, check whether the bolts of various parts are loose and whether the main engine compartment door is tightened, if any, it should be tightened. 5. Gas sealing, shutter valve, protection ring and other devices. Count the number of equipment and structural parts, check the quality of parts, focus on controlling the arc of the protection ring, and check the assembly size. 6. Configure the power cord and control switch according to the power of the equipment. 7. There should be a lifting space above the sand making machine, and lifting equipment should be installed above the sand making machine. The lifting capacity of the lifting equipment should consider the weight of the largest piece of the sand making machine. 8. Appropriate space should be reserved on one side of the sand making machine for easy maintenance. 9. After the sand making machine is installed on site, a comprehensive inspection should still be carried out. Check whether the lubricating oil pipe is firmly connected, and refill the oil before the test run. Check the connection of each component, it should be firm and reliable, carefully check whether there is foreign matter on the impeller, if there is, it should be removed in time. Check whether the motor wiring is correct and the voltage is normal. 10. After the inspection, carry out the no-load test run, and the production can be carried out when the test run is normal.
First of all, the hydraulic unpacking sand making machine has a unique hydraulic system unpacking device. The hydraulic unpacking sand making machine facilitates the maintenance and inspection of the equipment, and the automatic detection device can stop the machine for maintenance under the condition that the sand making machine is not running properly. The box sand making machine is environmentally friendly, high efficiency, low energy consumption, and has a high quality assurance. High-quality materials and high-quality process technology improve the internal quality and appearance quality of the sand making machine and ensure a low failure rate. The design of the impact angle of the material in the sand making chamber reduces wear and use costs, and ensures the stability of operation while increasing the output. operation, so as to protect the sand making machine. The hydraulic unpacking sand making machine is that the ore is fed from the feeding port and slides down along the sieve plate. During the falling process, the ore on the screen is crushed by the carbide hammer on the high-speed rotating rotor, and the The speed of the crusher flies along the tangential direction to the lining plate of the first cavity, and the lining plate hits the ore back and then collides with other ore thrown out behind the rotor, so that the ore continues to be crushed, and the material enters the first crushing cavity and the blow hammer on the rotor. Impact crushing, and then enter the second crushing cavity for continuous crushing. The crushing of the material in the crushing cavity not only forms the crushing of the material, but also completes the shaping of the material in the cavity until the particles become the required size. Sand is discharged from the discharge port. It can be seen from the above that the work of the hydraulic open-box sand making machine is to crush the ore by the principle of stone-beating, which has a selective crushing effect, and the particle size of the crushed products is relatively uniform, and most of the shapes are cubic stones. It has a wide range of applications for bridge construction, high-speed road construction, docks, and airport construction. Performance characteristics of hydraulic unpacking sand making machine 1. It is suitable for large-scale production with a processing capacity of 50-300 tons/hour. 2. The production cost per ton of finished sand and gravel is only 3/5 of the conventional production line. 3. The production automation degree is high, the energy consumption is low, and the crushing ratio is large. 4. The investment recovery period is short, and the investment can be recovered in 4-5 months. 5. It has the function of shaping, and the product is in the shape of a cube. 6. The particle size of the finished product is excellent and meets the standard.
Vertical shaft impact crusher is a kind of crushing equipment made of newer crushing concept, which is more and more popular in the field of sand making at home and abroad, also known as sand making machine. Generally speaking, there are many factors that affect the production capacity of impact sand making machines, which are mainly analyzed from the following five aspects: material characteristics, impeller speed, crusher working parameters, production line design and operation and maintenance. 01 Influence of material properties 1) Material hardness The main factor affecting the difficulty of ore crushing in the production process is the hardness of the ore itself. The mechanical properties of most ore materials are unevenly distributed. The materials with large lumps and many texture gaps have poor mechanical strength and are easy to be broken; and the finer the particle size, the less the internal texture gaps, the higher the mechanical strength, and the less likely to be broken. The greater the hardness of the ore, the greater its density, the greater the difficulty of crushing, the lower the efficiency, and the more serious the wear on the equipment. 2) Feeding granularity and reasonable feeding amount Each model has a limit on the maximum particle size of the feeding material. If it is too large, it is easy to cause blockage and cause the equipment to lose its crushing function. Too much fine powder in the material will also affect the sand production. For materials with a high content of fine powder, they should be sieved once in advance to screen them out, so as not to affect the normal operation of the equipment. While ensuring the output, the appropriate feeding amount is beneficial to improve the life of wearing parts. When the feeding amount reaches 70%~90% of the full load of the impeller, the sand production reaches its peak value. If the feeding amount is too small, it not only reduces the output of the equipment, but also increases the wear of the lining plate of the crushing chamber and shortens the replacement cycle of parts. 3) Material humidity That is to say, when the moisture content in the material is large, the material is easy to adhere in the impact sand making machine, and it is also easy to cause blockage during the feeding and conveying process, resulting in the reduction of sand production capacity. If the humidity of the selected material is too high, sunlight or air drying can be used to reduce the percentage of moisture in the material. 4) Material viscosity The higher the viscosity of the material, the easier it is to adhere. The material with high viscosity will adhere to the inner wall of the flow channel cavity in the impeller, and even block the flow channel. If it cannot be cleaned in time, it will affect the working efficiency of the crusher, and may also affect the normal work in severe cases. Therefore, when selecting materials, the ones with low viscosity should be selected. 02 Influence of impeller speed The continuous material enters the high-speed rotating impeller, and after acceleration, a steady stream of power material is formed, which produces high-speed extrusion, grinding and crushing in the vortex cavity, resulting in continuous crushing production. It can be known from the working principle of the vertical shaft impact crusher that when the particle size of the material is determined, the kinetic energy increases greatly as the linear speed of the crusher rotor increases; when the linear speed of the crusher rotor is balanced, if the material mass increases, the kinetic energy increases. also increases, and vice versa. There is a certain relationship between the particle size of the crushed stone in the vertical shaft impact crusher and the linear speed of the rotor. Under the premise of the same working state, if the particle size of the crushed material is large, the linear speed of the crusher rotor will be low. It can be seen that when the crushing strength of the material is large or the crushing particle size is small, the required crushing speed will increase. In the case of the same particle size, moisture content and feeding amount of the incoming materials, the rotor speed (line speed) of the crusher is appropriately increased, and the output of fine powder is increased. 03 Influence of working parameters Crusher performance and structural factors have a great impact on crushing. The type and specification of the crusher, the economical and reasonable installed power, the adjustment range of the rotational speed, the size of the discharge port and the structure of the crushing cavity all have a great influence on the crushing efficiency. For example, the crushing cavity of the vertical shaft impact crusher can be of “stone-on-stone” type or “stone-on-iron” type. The former has better grain shape and is suitable for shaping; the latter has high crushing efficiency, but the finished grain shape is slightly worse. , the wear cost of the surrounding guard plate is also higher. Changing the form of the peripheral lining plate in the crushing chamber, or increasing the impact plate, increasing the size of the outlet of the crushing chamber, etc., can increase the production capacity and increase the amount of fine particles. 04Influence of production line design A high-efficiency sand-making production line not only requires high-efficiency sand-making equipment, but also the coarse crushing, medium crushing, screening and washing equipment, waste water and mud treatment equipment, etc. to meet the production capacity requirements. If a certain link fails to achieve the required crushing ratio, it will inevitably cause pressure and constraints on the next stage of crushing, which will increase the number of system failure points, reduce the reliability of its operation, and ultimately the sand production of the sand making machine. decline. 05 Influence of operation and maintenance factors The standardized operation and regular maintenance of the sand making machine will also affect the sand output of the equipment. If a sand making machine is operated irregularly and does not do regular maintenance, it will cause the wearing parts of the equipment to wear faster, greatly reduce the life of the equipment, and the production volume per unit time will be small. For example: the continuity and uniformity of feeding have a great influence on production. Continuous and uniform feeding can not only make production normal, but also improve productivity; the size of feeding particles will also affect production, and materials larger than the specified value will cause The imbalance of the impeller and the excessive wear of the impeller will cause the impeller channel and the central feeding pipe to be blocked, so that the sand making machine cannot work normally and so on. The vertical shaft impact crusher is a widely used sand making equipment in the current market. Its capacity is not only related to the equipment itself, but also closely related to the materials, operation and maintenance conditions, and the configuration of the production line. Users should make more comparisons when purchasing in the early stage, and choose regular and powerful manufacturers to plan and design production lines.
1. The normal operating temperature of the bearing box of the sand making machine is 40℃~60℃, and the maximum allowable temperature is 70℃. After half an hour of operation, if the temperature exceeds 70℃, it means that there is a certain problem in the bearing box, and it should be stopped in time for maintenance. 2. When the sand making machine is running under load, the feeding particle size is not allowed to exceed the maximum particle size allowed by the equipment. 3. During the initial feeding of the sand making machine, there is usually an unbalanced process of about 30~60s. In this case, the feeding cannot be stopped, and the feeding amount should be increased as much as possible until the vibration is reduced. When the feeding particle is large, it will vibrate intermittently, and it will return to the normal state after a few seconds. This is due to the fact that a certain throwing head of the rotor retains the stone, which is a normal situation caused by the accumulation of material and then washed away. nervous. 4. The vibration intensifies during the operation of the sand making machine, indicating that there may be uneven wear between the wear-resistant parts and the rotor, which is caused by the unbalanced state caused by the uneven rotor and the accumulated material, or the looseness of the tapered sleeve of the pulley. . After the normal vibration is ruled out, it can be stopped for inspection. In addition, the vibration switch installed on the sand making machine can be set. When it detects unbalanced vibration, it will automatically stop before equipment damage and personal injury occur. 5. The wear-resistant parts of the rotor of the sand making machine are designed to protect the rotor body from wear. In order to ensure the trouble-free operation of the sand making machine, the inspection of the wear-resistant parts of the rotor and the inner lining of the machine must be incorporated into the routine, and the wear-resistant parts that cannot meet one work shift should be replaced in time. Every 8-10 hours of operation of the equipment, the rotor, the interior and appearance of the sand making machine should be checked, and the bearing box should be filled with grease. 6. Check the current of the sand making machine motor. If the motor current is too large and the motor is overloaded, the feeding amount should be reduced until the current value is normal.
1. Before driving, check whether the observation door of the whirl chamber is tightly closed to prevent the sand and gravel from rushing out of the observation door of the whirl chamber, which may cause danger. 2. Check the rotation direction of the impeller. From the direction of the feeding port, the impeller should rotate counterclockwise, otherwise the motor wiring should be adjusted. 3. The starting sequence of sand making machine and conveying equipment is: discharge → sand making machine → feeding. 4. The sand making machine must be started with no load, and the material can be fed after the operation is normal. The shutdown sequence is the opposite of the startup sequence. 5. The feeding particles are strictly in accordance with the specified requirements, and materials larger than specified are prohibited from entering the sand making machine, otherwise, the impeller will be unbalanced and the impeller will be excessively worn, and the impeller channel and the central feeding pipe will be blocked, so that the sand making machine cannot be used. It works normally, and it should be eliminated in time if it is found that the feed is too large. 6. When the discharging equipment stops, the feeding should be stopped in time, otherwise, the impeller will be crushed and the motor will be burned. 7. The feeding should be uniform and continuous. 8. During the operation of the sand making machine, there should be no violent vibration and abnormal noise, otherwise, it should be stopped for inspection. 9. Lubrication of the machine: Use the required special grade of automotive grease, and the amount added is 1/2-2/3 of the bearing cavity. When the sand making machine works for each shift, add an appropriate amount of grease. 10. The tensioning force of the transmission triangular tape should be adjusted properly to ensure that the triangular tape is evenly stressed. When driven by two motors, the triangular tapes on both sides should be grouped and matched, so that the length of each group is as consistent as possible. It should be adjusted so that the current difference between the two motors does not exceed 15A.
01. Sand making machine use: The sand making machine is suitable for crushing and shaping of soft or medium-hard and extremely hard materials, and is widely used in various ores, cement, refractory materials, bauxite clinker, emery, glass raw materials, etc. In the field of engineering, it is an ideal production equipment for machine-made sand, cushion material, asphalt concrete and cement concrete aggregate. The working principle of the sand making machine: the material falls into the feeding hopper, enters the high-speed rotating throwing wheel through the feeding hole, is rapidly accelerated in the throwing wheel, and its acceleration can reach dozens of times the acceleration of gravity, and then is ejected from the throwing wheel at high speed. First, it collides with another part of the material that falls freely after the rebound, and then hits the material lining (stone hits stone) or counterattack block (stone hits iron) together. The deflection moves downward, and collides with the material emitted from the impeller channel to form a continuous material curtain. In this way, a piece of material is subjected to two or more chances of impact, friction and grinding and crushing in the eddy current crushing chamber. The crushed material is discharged from the lower discharge port. 02. Use of sand washing machine: Sand washing machine is widely used in construction sites, sand and gravel plants, concrete dam construction sites of hydropower stations and other industries. It has high cleaning degree, reasonable structure, large processing capacity, low power consumption, washing There is little sand loss during the sanding process, especially the transmission parts of the sand washing machine are isolated from water and sand, so the failure rate is much lower than that of the commonly used sand washing machines at present, and it is a good choice for the upgrading of the domestic sand washing industry. Working principle of sand washing machine: During operation, the motor drives the impeller to rotate slowly after deceleration through the V-belt, reducer and gear. The impurities on the stone surface will also destroy the water vapor layer covering the sand grains to facilitate dehydration; at the same time, add water to form a strong water flow, which will take away impurities and foreign objects with small specific gravity in time, and discharge them from the overflow washing tank to complete the cleaning effect. The clean sand and gravel are taken away by the blades, and the final sand and gravel are poured into the discharge chute from the rotating impeller to complete the cleaning of the sand and gravel.
The rotor is the core component of the sand making machine. Before leaving the factory, the manufacturer will use an online dynamic balancer to ensure the balance of the rotor of the sand making machine by adding a counterweight to the rotor. After long-term use on site, the rotor is unbalanced due to wear and other reasons, and the unbalanced rotor will cause undesirable phenomena such as excessive machine vibration, low sand making efficiency, and reduced service life of the spindle assembly. Therefore, it is very important to ensure the balance of the rotor. Recently, I consulted with users in the background on how to adjust the balance of the impeller rotor. Let me share with you how to balance and correct the rotor. When to perform a balance correction 1. After the rotor repair operation, such as after hardening; 2. If the machine vibrates greatly but the wear plate is in good condition, it is recommended to check the balance of the rotor. Steps for Rotor Calibration After understanding the reason and timing of the correction, we also need to understand the specific operation steps. Only by understanding the steps can the correction process be completed. Generally speaking, the steps are mainly divided into four: 1) Because the rotor of the impeller will also wear when the sand making machine is running, when the balance is corrected after replacing the worn parts, it is necessary to clean the sand and gravel on the rotor and its accessories, old wear parts, etc. Confirm that it can continue to be used, otherwise, there is no need to calibrate the balance, and the rotor needs to be replaced before calibration; 2) Reinstall the wear parts, and install the rotor on the balance tool; 3) Determine the unbalanced weight and position; 4) Review the balance of the balanced rotor, which is to ensure the effect of correction; In production, the top, inner and lower edges of the rotor are prone to wear. Check whether the machine is running normally every day, and regularly check whether the transmission triangle belt is tightened. If it is too loose or too tight, it should be adjusted properly to ensure that the triangle belt should be grouped and matched, so that the length of each group is as consistent as possible.
Many people say that sand making machine and crusher are both crushing equipment. What is the difference between them? First of all, we all know that they are all crushing equipment, which has the effect of crushing hard objects. We think they are the same, but they are not. Next, Youzhong Machinery will answer the difference between them. (1) Crusher and sand making machine are two different concepts. Crusher is a crushing equipment that can not be screened after the stone is crushed, and the particle size is still large; sand making machine is also called impact crusher. After crushing, the particle size is different, but it can be sieved, and some of the sieved stones can reach the crushing equipment of the application specification. (2) There is a huge difference between the crusher and the sand making machine in terms of the size of the crushed material. The invention of the crusher is earlier than the sand making machine. The crushing equipment is a jaw crusher. Its function is to crush hard materials such as stones and minerals. Crushing can only be used for crushing stones, but the crushing efficiency is higher. As for the sand making machine, its crushing method is to use the centrifugal force of the impeller to make the material hit the lining plate or the material lining, and then break it apart. It belongs to the sand making or shaping process in the sand making production line. It is a kind of sand and gravel The sand making machine can adjust the size of the particle size at will according to the customer’s requirements, and also has the functions of shaping and grinding. (3) The uses between them are also different. The crusher is mainly used to crush various medium-hard and brittle materials, such as granite, river pebbles, cobblestones, limestone, coal, ore, machine-made sand, and building materials. It is widely used in medium and fine crushing (sand making) of various hard and brittle materials such as various rocks, abrasives, refractory materials, cement clinker, quartz stone, iron ore, concrete aggregate , is a common equipment in the field of artificial sand making and stone shaping
First of all, the sand making machine is different from the shaping machine. The shaping machine is relatively broad, such as jaw crusher, hammer crusher, cone crusher, sand making machine, etc. can be called shaping machine, but the sand making machine can only be used For sand making. Both sand making machines and shaping machines can be called crushers. Some sand making machines do not have shaping functions. However, as major manufacturers increase the research and development of sand making machines, many sand making machines now have shaping functions. Difference 1. Different working principles Among them, the sand making machine is mainly used to make sand, and its crushing ratio is larger, while the shaping machine is mainly used to improve the beauty of the stone, and the crushing ratio is small; Difference 2. Different crushing cavity types The crushing cavity is the core area of the equipment for material processing. The difference between the crushing cavity of the sand making machine and the shaping machine makes the two different functions. In addition, the cavity of the sand making machine is more compact, while the cavity of the shaping machine is more spacious; the internal structure of the two is There are also big differences in the above, such as the shape of the internal lining plate, the shape of the surrounding guard plate, the size of the eddy current crushing cavity, etc. There are obvious differences, so from these aspects, the two belong to different equipment.