How to use the vibrating screen exciter correctly?

We all know that when some machinery and equipment need to generate excitation force, if the machine itself does not have this function, it needs to add some vibration devices. The vibrating screen needs to use mechanical vibration to screen materials. Therefore, vibration The screen exciter has become one of the important components of the vibrating screen.

When purchasing a vibrating screen exciter, many users generally focus on the quality and performance of the exciter. However, as long as the quality is passed, can the use of the vibrating screen exciter be completely assured? This is not the case. Although the quality of the exciter is the focus of attention, the use of the exciter is correct and reasonable, and it is also an important factor affecting the performance of the vibrating screen. If it is improperly operated for a long time, it is easy to cause the failure of the exciter, thus affecting the normal operation of the vibrating screen. As an old-fashioned vibrating screen exciter manufacturer, Luoyang Haiside Heavy Industry Co., Ltd. shares with you the precautions for the use of vibrating screen exciters, so that more people can learn the correct use of vibrating screen exciters.

The correct use of the vibrating screen exciter is summarized as follows:

1. Before starting the work, check the tightness of all the bolts, and after the initial work for 8 hours, check whether there is looseness and tighten again.

2. Check the oil level in the exciter. If the oil level is too high, the temperature of the exciter will rise or it will be difficult to operate. If the oil level is too low, it will lead to insufficient lubrication and damage to the bearing. Normally, 2/3 of the lubricating cavity should be filled. should.

vibrating screen exciter

3. Ensure a minimum clearance between all moving parts and fixed objects.

4. When the load of the vibrating screen starts, it will cause greater pressure on the bearing of the exciter and reduce the service life. Therefore, it is necessary to check the screen surface of the vibrating screen before opening to ensure that the vibrating screen is started under no load, and then start feeding after the vibrating screen runs smoothly. Before shutting down, the feeding should be stopped first, and the machine should be shut down after the material on the screen surface is drained.

5. During the operation of the vibrating screen, pay attention to whether the exciter is hot or has abnormal noise. If there is abnormal operation, stop it in time to check to avoid accidents.

6. When disassembling the exciter, it needs to be powered off in advance, and should refer to the assembly drawing of the exciter. It should be disassembled with special tools to avoid artificial damage to the parts. After cleaning and testing the parts, if cracks, wear and other problems are found, they should be replaced in time.

Haiside Heavy Industry believes that as long as an old brand exciter that meets the standards of various countries is selected, and the vibration exciter is operated in accordance with the standards during the use of the vibrating screen exciter, the performance of the exciter can basically be guaranteed. The vibrating screen exciters produced by Haiside Heavy Industry have a complete range and excellent quality, and are widely used in a variety of vibrating screens. If you have related needs, you can call us at any time.

What are the vibrating screen models?

In mining operations, vibrating screen is one of the screening equipment that is often used. Nowadays, most of the vibrating screens on the market are linear vibrating screens and circular vibrating screens. These two types of vibrating screens can also be divided into various types according to the screening materials, usage scenarios and output. The output corresponding to the model is basically different. Therefore, the understanding of the vibrating screen model can be directly started from the circular vibrating screen and the linear vibrating screen.

1. Circular vibrating screen

The circular vibrating screen, as the name implies, has a circular running track. Therefore, when the material is screened on the circular vibrating screen, it performs circular motion, which is a new type of multi-layer vibrating screen. Circular vibrating screen is often used in quarries to screen sand and gravel materials due to its fast screening speed, high work efficiency, simple structure, reliable operation and low noise, and of course it can also be used in coal preparation, mineral processing and other industries.

YK series is the most commonly used circular vibrating screen at present. The circular vibrating screen of this series is named according to the number of screen layers and screen size, such as 2YK1548. The motion trajectory is similar to a circle, 15 represents the width of the screen, and 48 represents the length of the screen. Therefore, the meaning of this model refers to a two-layer circular vibrating screen with a screen width of 1500mm and a length of 4800mm. Generally, several layers of sieves can produce several kinds of finished products, and the top layer is the return material.

Linear vibrating screen

The processing capacity of YK series circular vibrating screen is between 12-720m/h. The larger the model number, the wider the screen width and the longer the length, and the higher the vibrating screen output. The mesh size of the screen can be determined according to the feeding size of the screening material.

Commonly used circular vibrating screen models:

2YK1230, 2-layer screen, the screen area is 7.2㎡, and the processing capacity is 12-78m/h;

3YK1230, 3-layer screen, the screen area is 10.8㎡, and the processing capacity is 13-80m/h;

2YK1237, 2-layer screen, the screen area is 8.88㎡, and the processing capacity is 15-86m/h;

3YK1237, 3-layer screen, the screen area is 13.32㎡, and the processing capacity is 16-90m/h;

2YK1548, 2-layer screen, the screen area is 14.4㎡, and the processing capacity is 22.5-162m/h;

3YK1548, 3-layer screen, the screen area is 21.6㎡, and the processing capacity is 22.5-162m/h;

4YK1548, 4-layer screen, the screen area is 28.8㎡, and the processing capacity is 22.5-162m/h.

2. Linear vibrating screen

The characteristics of the linear vibrating screen are high efficiency, simple structure, convenient maintenance, low power consumption, and no dust spillage during operation. It has good screening effect in dry and wet classification and dehydration of medium and fine materials. Therefore, this type of vibrating screen is widely used in light industry, metallurgy, coal and other industries.

When the linear vibrating screen is working, its power source is the vibration of the vibration motor. Under the combined action of the material’s own gravity and the exciting force, the material is thrown up on the screen surface and moves forward in a straight line, and then is screened out through the screen. Various specifications of materials, different specifications of materials, corresponding to different specifications of the discharge port.

The processing capacity of the linear vibrating screen is generally between 10-600t/h, the feeding particle size is not more than 300mm, the screening particle size is relatively fine, and the maximum screening mesh number is 400 mesh, which can screen out 7 kinds of materials with different particle sizes.

High frequency dehydration vibrating screen

Commonly used linear vibrating screen models:

ZSG1237, 1-layer screen surface, the processing capacity is 10-100t/h, and the total weight is 2250kg;

2ZSG1237, 2-layer screen surface, the processing capacity is 10-100t/h, and the total weight is 3345kg;

ZSG1443, 1-layer screen surface, the processing capacity is 10-150t/h, and the total weight is 4100kg;

2ZSG1443, 2-layer screen surface, the processing capacity is 10-150t/h, and the total weight is 4900kg;

3ZSG1443, 3-layer screen surface, the processing capacity is 10-150t/h, and the total weight is 5870kg;

2ZSG1548, 2-layer screen surface, the processing capacity is 15-200t/h, and the total weight is 5836kg;

3ZSG1548, 3-layer screen surface, the processing capacity is 15-200t/h, and the total weight is 6900kg.

The linear vibrating screen is generated by the double motor to generate the exciting force, so that the material is thrown up on the screen and moves forward in a straight line. It is mostly used for small mining or the screening of finer materials. The circular vibrating screen uses an eccentric block as the exciting force (its exciting force is relatively strong), and then performs circular motion, which is suitable for large-scale mining or screening of large materials. Generally, it is used to process materials of about 5mm. Compared with the linear vibrating screen, the efficiency will be higher.

The above content is the relevant introduction of the vibrating screen model. I hope it can be helpful to you. If you need to know more about the vibrating screen, or intend to purchase vibrating screen products, you are welcome to log in to our official website to browse and consult, and look forward to cooperating with you !

How to choose the length and width of the vibrating screen?

When we choose a vibrating screen, we generally pay attention to its model size. If it is used in different industries, the selected model size is also different. For example, if it is used in the mining production industry, then the vibrating screen must be of the heavy-duty type. Relatively speaking, the size of the model is relatively large, and the parameters that determine the size of the vibrating screen to a certain extent are the length and width of the vibrating screen, so how to choose the length and width of the vibrating screen?

Selection of length and width of vibrating screen

Arc vibrating screen

1. Selection of the length of the vibrating screen

The selection of the length of the vibrating screen should be appropriate, because the screening efficiency of the linear vibrating screen is directly related to the length of the linear vibrating screen. If the length is too long, the screened materials will not be able to quickly leave the screen surface and affect the linear vibration. Screening effect. If the length is too short, the residence time of the material on the screen surface is too short, and it cannot be sufficiently screened. It is also unreasonable to increase the screening efficiency by using a longer screen surface to increase the screening time, so the length of the screen surface must be selected appropriately.

2. Selection of the width of the vibrating screen

At present, the width of the vibrating screen is at most 3.6m, and the width of the screen surface of the light-duty linear vibrating screen cannot exceed 1.5m. If the screen surface is too wide, it is difficult to ensure the uniformity of the material on the screen surface. In order to ensure the ability of the linear vibrating screen screening equipment, the material on the screen surface of the linear vibrating screen needs to have a certain thickness. When the thickness of the material on the screen surface reaches a certain level, the amount of the screen surface passing through it mainly depends on the linear vibrating screen. width. Therefore, the larger the production capacity, the wider the screen surface needs to be, but the width of the linear vibrating screen also has a certain limit.

The influence of the length and width of the vibrating screen

High frequency dehydration vibrating screen

1. Length affects the screening efficiency

As mentioned above, the length of the screen surface of the vibrating screen directly affects the screening efficiency of the screen machine, because the length of the screen surface affects the residence time of the screened material on the screen surface. The sieving test shows that when the sieving time is slightly increased, there are many particles smaller than the sieve hole, which pass through the sieve hole and pass through the sieve, so the sieving efficiency increases rapidly. However, as the sieving time increases, the easy-to-screen particles on the screen surface become less and less, and most of the remaining particles are difficult-to-screen particles, that is, the particle size of the material is close to the size of the sieve hole. It takes a long time to sieve these difficult-to-screen particles, and the increase of sieving efficiency is getting slower and slower. Therefore, the length of the screen surface is only within a certain range, which plays a role in improving the screening efficiency. The length of the screen surface cannot be excessively lengthened, otherwise the structure of the screening machine will be cumbersome and the expected effect will not be achieved.

2. Width affects processing power

The width of the vibrating screen determines the processing capacity. The width of the vibrating screen is not only affected by the processing capacity of the screening machine, but also by the structural strength of the screening machine. The larger the width, the larger the size of the vibrating screen, the more and more difficult the problem needs to be solved in the structural strength of the screening machine, so the width of the screen surface cannot be increased arbitrarily.

Linear vibrating screen

Relationship between length and width of vibrating screen

The relationship between the length and width of the vibrating screen is a mutual restriction and mutual influence. The length and width of the screen surface of the mining vibrating screen should maintain a certain proportional relationship, usually 2.5:1-3:1. Generally speaking, after the thickness of the material is given, the width of the screen surface of the mining vibrating screen affects the productivity of the screening machine, but the length of the screen surface directly affects the sorting efficiency of the screening machine, so the selection of the two should also be combined. In order to choose the parameters suitable for your own production conditions, that is to say, the length and width of the screen surface of the vibrating screen can be determined according to the comprehensive indicators of productivity and screening efficiency required by the use site.

The above is an introduction to how to choose the length and width of the vibrating screen. In general, the width should be at most 3.6m, and the length should be appropriately selected. The length and width affect the screening efficiency and processing capacity of the vibrating screen respectively, and there is a relationship between the two that restricts and affects each other, so the selection should be based on the specific working conditions. If you need high-quality mining vibrating screen, please contact Hiside for details~

What are the lubrication methods of vibrating screen?

In the mine production site, vibrating screen is a common equipment, which needs to screen and dehydrate materials. Since it is a large-scale equipment and the workload of the equipment is large, the maintenance work of the vibrating screen should be done well at ordinary times, and the lubrication and maintenance can ensure the normal production and operation of the vibrating screen. So what kind of lubrication is used for the vibrating screen? Generally, there are two types of lubrication, oil lubrication and grease lubrication. The following editors from Hiside will give you a detailed introduction.

1. Lubrication method of vibrating screen

Oil lubrication of vibrating screen

Lubricating oil has strong fluidity and dispersibility, so the oil-lubricated seal needs to be safe and reliable. The sealing device is more complicated than grease lubrication, and it is more difficult to disassemble and maintain. Oil lubrication is generally suitable for bearings operating at high speeds or in environments with high bearing temperatures. Commonly used oil lubrication methods include oil bath lubrication, circulating oil lubrication, drip oil lubrication, oil injection lubrication, and oil and gas lubrication.

Grease lubrication of vibrating screen

Grease has the characteristics of strong adhesion, not easy to run off, and good pressure resistance. Due to the weak fluidity of the grease, the grease lubricated sealing device is relatively simple, the disassembly and maintenance are more convenient, and a special oil supply system is not required. Grease lubrication is generally suitable for work in low and medium speed and moderate temperature environments. Commonly used greases are calcium-based grease, sodium-based grease, aluminum-based grease, general-purpose lithium-based grease, extreme-pressure lithium-based grease and molybdenum disulfide extreme-pressure lithium-based grease.

Banana screen

2. Characteristics of vibrating screen lubrication method

Characteristics of oil lubrication of vibrating screen

Name Features and uses
Oil bath lubrication The rotation of the bearing itself is used to drive the lubricating oil to lubricate the bearing, and the lubricated lubricating oil flows back to the oil tank: but this lubrication needs to control the oil amount. In general, the upper height of the lubricating oil is slightly lower than the center line of the bearing: too much oil , The increase of bearing resistance causes the bearing to heat up, the oil amount is too small, and the lubrication effect is not achieved, thereby reducing the bearing service life: it is mainly used in bearings with low and medium speeds, and has a wide range of applications.
Circulating oil lubrication The oil inlet and outlet are provided on the seat. When the bearing is running, the oil pump is used to pump the lubricating oil from the oil inlet to the bearing, and the oil flowing out of the oil outlet is filtered and cooled. This method not only lubricates the bearing It also plays a role in cooling and cooling; it is generally used in bearings with high speed.
Drip lubrication The lubricating oil is dripped onto the friction pair by its own weight, generally 3-8 seconds a drop is appropriate, because too much oil will cause the bearing temperature to increase; this lubrication is mostly used for gears, racks and other frictions that are small in number and easy to approach On the pair and bearing parts that require a quantitative supply of lubricating oil.
Oil injection lubrication The high-pressure injection method is used to spray lubricating oil from one end of the bearing into the bearing to lubricate it, and the lubricated oil flows into the oil tank from the other end; this method can effectively lubricate the bearing, but the position of the high-pressure nozzle and the injection speed have certain It is required that the high-pressure nozzle is located between the inner ring and the cage, the injection speed is greater than 15 meters per second, and the lubricating oil is directly injected into the bearing; this lubrication is suitable for high-speed running bearings with medium and low loads.
Oil-air lubrication The compressed air is mixed with a little lubricating oil to form oil mist and sprayed into the bearing in the working state; this method also plays a role in cooling and cooling while lubricating the bearing. Compared with other lubrication methods, it can make it run at a lower temperature and allow the bearing speed to reach up. This lubrication is suitable for bearings under high speed, high temperature and heavy load work.

Characteristics of grease lubrication of vibrating screen

Name Features and uses
Calcium based grease Good water resistance, poor heat resistance. The operating temperature is less than 60 degrees, and the shear resistance is poor under high-speed conditions. It is suitable for low temperature, medium and low load, medium and low speed humid environment or lubricating places in contact with water, and the price is low.
Sodium Grease Poor water resistance, average heat resistance and rust resistance, suitable for lubricating low-speed, medium-load mechanical equipment in the temperature range of -10 to 100 degrees, not suitable for lubricating parts in contact with water, and the price is low.
Aluminum base grease It has high water resistance and poor heat resistance, and the operating temperature is less than 50 degrees. It is suitable for corrosion protection of metal surfaces and friction parts of shipping machines under medium and high loads and low speeds. The price is low.
General Purpose Lithium Grease It has good water resistance, heat resistance, mechanical stability, corrosion resistance and oxidation stability. It is suitable for the lubrication of rolling bearings and sliding bearings and other friction parts of various mechanical equipment within the working temperature range of -20 to 120 degrees. It is mostly used under medium and high load and medium and low speed. fair price.
Lithium grease It has good heat resistance, water resistance, rust resistance, and extreme pressure performance. It is suitable for high-load, medium-speed mechanical equipment bearings and gear lubrication at a working temperature of -20 to 120 degrees. It can also be used in centralized lubrication systems. Moderate.
Lithium Molybdenum Disulfide Grease It is suitable for the lubrication of heavy-duty gears and bearings such as internal rolling steel machinery, mining machinery, and heavy lifting machinery with a working temperature of -10 to 120 degrees.

High frequency dehydration vibrating screen

3. Comparison of vibrating screen lubrication methods

Compare items oil lubrication Grease lubrication
Sealing means More complicated, need to pay attention to maintenance Simple
Lubrication performance very good  good
Rotating speed Also available for high speed low speed medium speed
torque smaller bigger
Lubricant replacement Simple more troublesome
Lubricant life long shorter
cooling effect Good (requires loop) none
Filtration of impurities easy difficulty
leakage of lubricant Not suitable for places where oil leakage is not allowed Less oil spill pollution

4. Precautions for vibrating screen lubrication

(1) After the vibrating screen is delivered to the site, it should be refueled every four hours after starting up. The vibration exciter bearing is lubricated, and the bearing is made of lubricating grease, which should not be mixed with other varieties. When replacing new grease, the original grease should be cleaned.​​

(2) After starting production, add oil every 24 hours, 60-80g oil each time; also add grease according to the actual situation to ensure that the screen bearing works under the condition of sufficient grease.​​

(3) The initial oil filling of the bearing is 1/3-2/3 of the bearing space, and it should not be too much to prevent the bearing from heating. Use a high-pressure oil gun or oil pump to inject oil through the pipe joint.​​

(4) Remove the bearing and clean it every six months.​​

(5) All lubrication points and oil seals must not have oil leakage.

The above is the answer to what kind of lubrication is used for the vibrating screen. In order to make the bearing function fully, it is necessary to adopt appropriate lubrication methods and lubricants according to the influencing factors of the use environment, in order to achieve good lubrication protection effect. Lubrication affects the working state of the vibrating screen equipment to a large extent, so it is very important to do the lubrication and maintenance work for each part of the vibrating screen.